diff options
Diffstat (limited to 'net/ethtool')
| -rw-r--r-- | net/ethtool/Makefile | 10 | ||||
| -rw-r--r-- | net/ethtool/bitset.c | 833 | ||||
| -rw-r--r-- | net/ethtool/bitset.h | 34 | ||||
| -rw-r--r-- | net/ethtool/cabletest.c | 433 | ||||
| -rw-r--r-- | net/ethtool/channels.c | 224 | ||||
| -rw-r--r-- | net/ethtool/coalesce.c | 322 | ||||
| -rw-r--r-- | net/ethtool/common.c | 412 | ||||
| -rw-r--r-- | net/ethtool/common.h | 43 | ||||
| -rw-r--r-- | net/ethtool/debug.c | 128 | ||||
| -rw-r--r-- | net/ethtool/eee.c | 190 | ||||
| -rw-r--r-- | net/ethtool/features.c | 294 | ||||
| -rw-r--r-- | net/ethtool/ioctl.c | 3229 | ||||
| -rw-r--r-- | net/ethtool/linkinfo.c | 154 | ||||
| -rw-r--r-- | net/ethtool/linkmodes.c | 431 | ||||
| -rw-r--r-- | net/ethtool/linkstate.c | 182 | ||||
| -rw-r--r-- | net/ethtool/netlink.c | 949 | ||||
| -rw-r--r-- | net/ethtool/netlink.h | 399 | ||||
| -rw-r--r-- | net/ethtool/pause.c | 192 | ||||
| -rw-r--r-- | net/ethtool/privflags.c | 201 | ||||
| -rw-r--r-- | net/ethtool/rings.c | 179 | ||||
| -rw-r--r-- | net/ethtool/strset.c | 455 | ||||
| -rw-r--r-- | net/ethtool/tsinfo.c | 136 | ||||
| -rw-r--r-- | net/ethtool/tunnels.c | 298 | ||||
| -rw-r--r-- | net/ethtool/wol.c | 170 |
24 files changed, 9898 insertions, 0 deletions
diff --git a/net/ethtool/Makefile b/net/ethtool/Makefile new file mode 100644 index 000000000..7a849ff22 --- /dev/null +++ b/net/ethtool/Makefile @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0-only + +obj-y += ioctl.o common.o + +obj-$(CONFIG_ETHTOOL_NETLINK) += ethtool_nl.o + +ethtool_nl-y := netlink.o bitset.o strset.o linkinfo.o linkmodes.o \ + linkstate.o debug.o wol.o features.o privflags.o rings.o \ + channels.o coalesce.o pause.o eee.o tsinfo.o cabletest.o \ + tunnels.o diff --git a/net/ethtool/bitset.c b/net/ethtool/bitset.c new file mode 100644 index 000000000..0515d6604 --- /dev/null +++ b/net/ethtool/bitset.c @@ -0,0 +1,833 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/ethtool_netlink.h> +#include <linux/bitmap.h> +#include "netlink.h" +#include "bitset.h" + +/* Some bitmaps are internally represented as an array of unsigned long, some + * as an array of u32 (some even as single u32 for now). To avoid the need of + * wrappers on caller side, we provide two set of functions: those with "32" + * suffix in their names expect u32 based bitmaps, those without it expect + * unsigned long bitmaps. + */ + +static u32 ethnl_lower_bits(unsigned int n) +{ + return ~(u32)0 >> (32 - n % 32); +} + +static u32 ethnl_upper_bits(unsigned int n) +{ + return ~(u32)0 << (n % 32); +} + +/** + * ethnl_bitmap32_clear() - Clear u32 based bitmap + * @dst: bitmap to clear + * @start: beginning of the interval + * @end: end of the interval + * @mod: set if bitmap was modified + * + * Clear @nbits bits of a bitmap with indices @start <= i < @end + */ +static void ethnl_bitmap32_clear(u32 *dst, unsigned int start, unsigned int end, + bool *mod) +{ + unsigned int start_word = start / 32; + unsigned int end_word = end / 32; + unsigned int i; + u32 mask; + + if (end <= start) + return; + + if (start % 32) { + mask = ethnl_upper_bits(start); + if (end_word == start_word) { + mask &= ethnl_lower_bits(end); + if (dst[start_word] & mask) { + dst[start_word] &= ~mask; + *mod = true; + } + return; + } + if (dst[start_word] & mask) { + dst[start_word] &= ~mask; + *mod = true; + } + start_word++; + } + + for (i = start_word; i < end_word; i++) { + if (dst[i]) { + dst[i] = 0; + *mod = true; + } + } + if (end % 32) { + mask = ethnl_lower_bits(end); + if (dst[end_word] & mask) { + dst[end_word] &= ~mask; + *mod = true; + } + } +} + +/** + * ethnl_bitmap32_not_zero() - Check if any bit is set in an interval + * @map: bitmap to test + * @start: beginning of the interval + * @end: end of the interval + * + * Return: true if there is non-zero bit with index @start <= i < @end, + * false if the whole interval is zero + */ +static bool ethnl_bitmap32_not_zero(const u32 *map, unsigned int start, + unsigned int end) +{ + unsigned int start_word = start / 32; + unsigned int end_word = end / 32; + u32 mask; + + if (end <= start) + return true; + + if (start % 32) { + mask = ethnl_upper_bits(start); + if (end_word == start_word) { + mask &= ethnl_lower_bits(end); + return map[start_word] & mask; + } + if (map[start_word] & mask) + return true; + start_word++; + } + + if (!memchr_inv(map + start_word, '\0', + (end_word - start_word) * sizeof(u32))) + return true; + if (end % 32 == 0) + return true; + return map[end_word] & ethnl_lower_bits(end); +} + +/** + * ethnl_bitmap32_update() - Modify u32 based bitmap according to value/mask + * pair + * @dst: bitmap to update + * @nbits: bit size of the bitmap + * @value: values to set + * @mask: mask of bits to set + * @mod: set to true if bitmap is modified, preserve if not + * + * Set bits in @dst bitmap which are set in @mask to values from @value, leave + * the rest untouched. If destination bitmap was modified, set @mod to true, + * leave as it is if not. + */ +static void ethnl_bitmap32_update(u32 *dst, unsigned int nbits, + const u32 *value, const u32 *mask, bool *mod) +{ + while (nbits > 0) { + u32 real_mask = mask ? *mask : ~(u32)0; + u32 new_value; + + if (nbits < 32) + real_mask &= ethnl_lower_bits(nbits); + new_value = (*dst & ~real_mask) | (*value & real_mask); + if (new_value != *dst) { + *dst = new_value; + *mod = true; + } + + if (nbits <= 32) + break; + dst++; + nbits -= 32; + value++; + if (mask) + mask++; + } +} + +static bool ethnl_bitmap32_test_bit(const u32 *map, unsigned int index) +{ + return map[index / 32] & (1U << (index % 32)); +} + +/** + * ethnl_bitset32_size() - Calculate size of bitset nested attribute + * @val: value bitmap (u32 based) + * @mask: mask bitmap (u32 based, optional) + * @nbits: bit length of the bitset + * @names: array of bit names (optional) + * @compact: assume compact format for output + * + * Estimate length of netlink attribute composed by a later call to + * ethnl_put_bitset32() call with the same arguments. + * + * Return: negative error code or attribute length estimate + */ +int ethnl_bitset32_size(const u32 *val, const u32 *mask, unsigned int nbits, + ethnl_string_array_t names, bool compact) +{ + unsigned int len = 0; + + /* list flag */ + if (!mask) + len += nla_total_size(sizeof(u32)); + /* size */ + len += nla_total_size(sizeof(u32)); + + if (compact) { + unsigned int nwords = DIV_ROUND_UP(nbits, 32); + + /* value, mask */ + len += (mask ? 2 : 1) * nla_total_size(nwords * sizeof(u32)); + } else { + unsigned int bits_len = 0; + unsigned int bit_len, i; + + for (i = 0; i < nbits; i++) { + const char *name = names ? names[i] : NULL; + + if (!ethnl_bitmap32_test_bit(mask ?: val, i)) + continue; + /* index */ + bit_len = nla_total_size(sizeof(u32)); + /* name */ + if (name) + bit_len += ethnl_strz_size(name); + /* value */ + if (mask && ethnl_bitmap32_test_bit(val, i)) + bit_len += nla_total_size(0); + + /* bit nest */ + bits_len += nla_total_size(bit_len); + } + /* bits nest */ + len += nla_total_size(bits_len); + } + + /* outermost nest */ + return nla_total_size(len); +} + +/** + * ethnl_put_bitset32() - Put a bitset nest into a message + * @skb: skb with the message + * @attrtype: attribute type for the bitset nest + * @val: value bitmap (u32 based) + * @mask: mask bitmap (u32 based, optional) + * @nbits: bit length of the bitset + * @names: array of bit names (optional) + * @compact: use compact format for the output + * + * Compose a nested attribute representing a bitset. If @mask is null, simple + * bitmap (bit list) is created, if @mask is provided, represent a value/mask + * pair. Bit names are only used in verbose mode and when provided by calller. + * + * Return: 0 on success, negative error value on error + */ +int ethnl_put_bitset32(struct sk_buff *skb, int attrtype, const u32 *val, + const u32 *mask, unsigned int nbits, + ethnl_string_array_t names, bool compact) +{ + struct nlattr *nest; + struct nlattr *attr; + + nest = nla_nest_start(skb, attrtype); + if (!nest) + return -EMSGSIZE; + + if (!mask && nla_put_flag(skb, ETHTOOL_A_BITSET_NOMASK)) + goto nla_put_failure; + if (nla_put_u32(skb, ETHTOOL_A_BITSET_SIZE, nbits)) + goto nla_put_failure; + if (compact) { + unsigned int nwords = DIV_ROUND_UP(nbits, 32); + unsigned int nbytes = nwords * sizeof(u32); + u32 *dst; + + attr = nla_reserve(skb, ETHTOOL_A_BITSET_VALUE, nbytes); + if (!attr) + goto nla_put_failure; + dst = nla_data(attr); + memcpy(dst, val, nbytes); + if (nbits % 32) + dst[nwords - 1] &= ethnl_lower_bits(nbits); + + if (mask) { + attr = nla_reserve(skb, ETHTOOL_A_BITSET_MASK, nbytes); + if (!attr) + goto nla_put_failure; + dst = nla_data(attr); + memcpy(dst, mask, nbytes); + if (nbits % 32) + dst[nwords - 1] &= ethnl_lower_bits(nbits); + } + } else { + struct nlattr *bits; + unsigned int i; + + bits = nla_nest_start(skb, ETHTOOL_A_BITSET_BITS); + if (!bits) + goto nla_put_failure; + for (i = 0; i < nbits; i++) { + const char *name = names ? names[i] : NULL; + + if (!ethnl_bitmap32_test_bit(mask ?: val, i)) + continue; + attr = nla_nest_start(skb, ETHTOOL_A_BITSET_BITS_BIT); + if (!attr) + goto nla_put_failure; + if (nla_put_u32(skb, ETHTOOL_A_BITSET_BIT_INDEX, i)) + goto nla_put_failure; + if (name && + ethnl_put_strz(skb, ETHTOOL_A_BITSET_BIT_NAME, name)) + goto nla_put_failure; + if (mask && ethnl_bitmap32_test_bit(val, i) && + nla_put_flag(skb, ETHTOOL_A_BITSET_BIT_VALUE)) + goto nla_put_failure; + nla_nest_end(skb, attr); + } + nla_nest_end(skb, bits); + } + + nla_nest_end(skb, nest); + return 0; + +nla_put_failure: + nla_nest_cancel(skb, nest); + return -EMSGSIZE; +} + +static const struct nla_policy bitset_policy[] = { + [ETHTOOL_A_BITSET_NOMASK] = { .type = NLA_FLAG }, + [ETHTOOL_A_BITSET_SIZE] = NLA_POLICY_MAX(NLA_U32, + ETHNL_MAX_BITSET_SIZE), + [ETHTOOL_A_BITSET_BITS] = { .type = NLA_NESTED }, + [ETHTOOL_A_BITSET_VALUE] = { .type = NLA_BINARY }, + [ETHTOOL_A_BITSET_MASK] = { .type = NLA_BINARY }, +}; + +static const struct nla_policy bit_policy[] = { + [ETHTOOL_A_BITSET_BIT_INDEX] = { .type = NLA_U32 }, + [ETHTOOL_A_BITSET_BIT_NAME] = { .type = NLA_NUL_STRING }, + [ETHTOOL_A_BITSET_BIT_VALUE] = { .type = NLA_FLAG }, +}; + +/** + * ethnl_bitset_is_compact() - check if bitset attribute represents a compact + * bitset + * @bitset: nested attribute representing a bitset + * @compact: pointer for return value + * + * Return: 0 on success, negative error code on failure + */ +int ethnl_bitset_is_compact(const struct nlattr *bitset, bool *compact) +{ + struct nlattr *tb[ARRAY_SIZE(bitset_policy)]; + int ret; + + ret = nla_parse_nested(tb, ARRAY_SIZE(bitset_policy) - 1, bitset, + bitset_policy, NULL); + if (ret < 0) + return ret; + + if (tb[ETHTOOL_A_BITSET_BITS]) { + if (tb[ETHTOOL_A_BITSET_VALUE] || tb[ETHTOOL_A_BITSET_MASK]) + return -EINVAL; + *compact = false; + return 0; + } + if (!tb[ETHTOOL_A_BITSET_SIZE] || !tb[ETHTOOL_A_BITSET_VALUE]) + return -EINVAL; + + *compact = true; + return 0; +} + +/** + * ethnl_name_to_idx() - look up string index for a name + * @names: array of ETH_GSTRING_LEN sized strings + * @n_names: number of strings in the array + * @name: name to look up + * + * Return: index of the string if found, -ENOENT if not found + */ +static int ethnl_name_to_idx(ethnl_string_array_t names, unsigned int n_names, + const char *name) +{ + unsigned int i; + + if (!names) + return -ENOENT; + + for (i = 0; i < n_names; i++) { + /* names[i] may not be null terminated */ + if (!strncmp(names[i], name, ETH_GSTRING_LEN) && + strlen(name) <= ETH_GSTRING_LEN) + return i; + } + + return -ENOENT; +} + +static int ethnl_parse_bit(unsigned int *index, bool *val, unsigned int nbits, + const struct nlattr *bit_attr, bool no_mask, + ethnl_string_array_t names, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[ARRAY_SIZE(bit_policy)]; + int ret, idx; + + ret = nla_parse_nested(tb, ARRAY_SIZE(bit_policy) - 1, bit_attr, + bit_policy, extack); + if (ret < 0) + return ret; + + if (tb[ETHTOOL_A_BITSET_BIT_INDEX]) { + const char *name; + + idx = nla_get_u32(tb[ETHTOOL_A_BITSET_BIT_INDEX]); + if (idx >= nbits) { + NL_SET_ERR_MSG_ATTR(extack, + tb[ETHTOOL_A_BITSET_BIT_INDEX], + "bit index too high"); + return -EOPNOTSUPP; + } + name = names ? names[idx] : NULL; + if (tb[ETHTOOL_A_BITSET_BIT_NAME] && name && + strncmp(nla_data(tb[ETHTOOL_A_BITSET_BIT_NAME]), name, + nla_len(tb[ETHTOOL_A_BITSET_BIT_NAME]))) { + NL_SET_ERR_MSG_ATTR(extack, bit_attr, + "bit index and name mismatch"); + return -EINVAL; + } + } else if (tb[ETHTOOL_A_BITSET_BIT_NAME]) { + idx = ethnl_name_to_idx(names, nbits, + nla_data(tb[ETHTOOL_A_BITSET_BIT_NAME])); + if (idx < 0) { + NL_SET_ERR_MSG_ATTR(extack, + tb[ETHTOOL_A_BITSET_BIT_NAME], + "bit name not found"); + return -EOPNOTSUPP; + } + } else { + NL_SET_ERR_MSG_ATTR(extack, bit_attr, + "neither bit index nor name specified"); + return -EINVAL; + } + + *index = idx; + *val = no_mask || tb[ETHTOOL_A_BITSET_BIT_VALUE]; + return 0; +} + +static int +ethnl_update_bitset32_verbose(u32 *bitmap, unsigned int nbits, + const struct nlattr *attr, struct nlattr **tb, + ethnl_string_array_t names, + struct netlink_ext_ack *extack, bool *mod) +{ + struct nlattr *bit_attr; + bool no_mask; + int rem; + int ret; + + if (tb[ETHTOOL_A_BITSET_VALUE]) { + NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_BITSET_VALUE], + "value only allowed in compact bitset"); + return -EINVAL; + } + if (tb[ETHTOOL_A_BITSET_MASK]) { + NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_BITSET_MASK], + "mask only allowed in compact bitset"); + return -EINVAL; + } + + no_mask = tb[ETHTOOL_A_BITSET_NOMASK]; + if (no_mask) + ethnl_bitmap32_clear(bitmap, 0, nbits, mod); + + nla_for_each_nested(bit_attr, tb[ETHTOOL_A_BITSET_BITS], rem) { + bool old_val, new_val; + unsigned int idx; + + if (nla_type(bit_attr) != ETHTOOL_A_BITSET_BITS_BIT) { + NL_SET_ERR_MSG_ATTR(extack, bit_attr, + "only ETHTOOL_A_BITSET_BITS_BIT allowed in ETHTOOL_A_BITSET_BITS"); + return -EINVAL; + } + ret = ethnl_parse_bit(&idx, &new_val, nbits, bit_attr, no_mask, + names, extack); + if (ret < 0) + return ret; + old_val = bitmap[idx / 32] & ((u32)1 << (idx % 32)); + if (new_val != old_val) { + if (new_val) + bitmap[idx / 32] |= ((u32)1 << (idx % 32)); + else + bitmap[idx / 32] &= ~((u32)1 << (idx % 32)); + *mod = true; + } + } + + return 0; +} + +static int ethnl_compact_sanity_checks(unsigned int nbits, + const struct nlattr *nest, + struct nlattr **tb, + struct netlink_ext_ack *extack) +{ + bool no_mask = tb[ETHTOOL_A_BITSET_NOMASK]; + unsigned int attr_nbits, attr_nwords; + const struct nlattr *test_attr; + + if (no_mask && tb[ETHTOOL_A_BITSET_MASK]) { + NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_BITSET_MASK], + "mask not allowed in list bitset"); + return -EINVAL; + } + if (!tb[ETHTOOL_A_BITSET_SIZE]) { + NL_SET_ERR_MSG_ATTR(extack, nest, + "missing size in compact bitset"); + return -EINVAL; + } + if (!tb[ETHTOOL_A_BITSET_VALUE]) { + NL_SET_ERR_MSG_ATTR(extack, nest, + "missing value in compact bitset"); + return -EINVAL; + } + if (!no_mask && !tb[ETHTOOL_A_BITSET_MASK]) { + NL_SET_ERR_MSG_ATTR(extack, nest, + "missing mask in compact nonlist bitset"); + return -EINVAL; + } + + attr_nbits = nla_get_u32(tb[ETHTOOL_A_BITSET_SIZE]); + attr_nwords = DIV_ROUND_UP(attr_nbits, 32); + if (nla_len(tb[ETHTOOL_A_BITSET_VALUE]) != attr_nwords * sizeof(u32)) { + NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_BITSET_VALUE], + "bitset value length does not match size"); + return -EINVAL; + } + if (tb[ETHTOOL_A_BITSET_MASK] && + nla_len(tb[ETHTOOL_A_BITSET_MASK]) != attr_nwords * sizeof(u32)) { + NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_BITSET_MASK], + "bitset mask length does not match size"); + return -EINVAL; + } + if (attr_nbits <= nbits) + return 0; + + test_attr = no_mask ? tb[ETHTOOL_A_BITSET_VALUE] : + tb[ETHTOOL_A_BITSET_MASK]; + if (ethnl_bitmap32_not_zero(nla_data(test_attr), nbits, attr_nbits)) { + NL_SET_ERR_MSG_ATTR(extack, test_attr, + "cannot modify bits past kernel bitset size"); + return -EINVAL; + } + return 0; +} + +/** + * ethnl_update_bitset32() - Apply a bitset nest to a u32 based bitmap + * @bitmap: bitmap to update + * @nbits: size of the updated bitmap in bits + * @attr: nest attribute to parse and apply + * @names: array of bit names; may be null for compact format + * @extack: extack for error reporting + * @mod: set this to true if bitmap is modified, leave as it is if not + * + * Apply bitset netsted attribute to a bitmap. If the attribute represents + * a bit list, @bitmap is set to its contents; otherwise, bits in mask are + * set to values from value. Bitmaps in the attribute may be longer than + * @nbits but the message must not request modifying any bits past @nbits. + * + * Return: negative error code on failure, 0 on success + */ +int ethnl_update_bitset32(u32 *bitmap, unsigned int nbits, + const struct nlattr *attr, ethnl_string_array_t names, + struct netlink_ext_ack *extack, bool *mod) +{ + struct nlattr *tb[ARRAY_SIZE(bitset_policy)]; + unsigned int change_bits; + bool no_mask; + int ret; + + if (!attr) + return 0; + ret = nla_parse_nested(tb, ARRAY_SIZE(bitset_policy) - 1, attr, + bitset_policy, extack); + if (ret < 0) + return ret; + + if (tb[ETHTOOL_A_BITSET_BITS]) + return ethnl_update_bitset32_verbose(bitmap, nbits, attr, tb, + names, extack, mod); + ret = ethnl_compact_sanity_checks(nbits, attr, tb, extack); + if (ret < 0) + return ret; + + no_mask = tb[ETHTOOL_A_BITSET_NOMASK]; + change_bits = min_t(unsigned int, + nla_get_u32(tb[ETHTOOL_A_BITSET_SIZE]), nbits); + ethnl_bitmap32_update(bitmap, change_bits, + nla_data(tb[ETHTOOL_A_BITSET_VALUE]), + no_mask ? NULL : + nla_data(tb[ETHTOOL_A_BITSET_MASK]), + mod); + if (no_mask && change_bits < nbits) + ethnl_bitmap32_clear(bitmap, change_bits, nbits, mod); + + return 0; +} + +/** + * ethnl_parse_bitset() - Compute effective value and mask from bitset nest + * @val: unsigned long based bitmap to put value into + * @mask: unsigned long based bitmap to put mask into + * @nbits: size of @val and @mask bitmaps + * @attr: nest attribute to parse and apply + * @names: array of bit names; may be null for compact format + * @extack: extack for error reporting + * + * Provide @nbits size long bitmaps for value and mask so that + * x = (val & mask) | (x & ~mask) would modify any @nbits sized bitmap x + * the same way ethnl_update_bitset() with the same bitset attribute would. + * + * Return: negative error code on failure, 0 on success + */ +int ethnl_parse_bitset(unsigned long *val, unsigned long *mask, + unsigned int nbits, const struct nlattr *attr, + ethnl_string_array_t names, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[ARRAY_SIZE(bitset_policy)]; + const struct nlattr *bit_attr; + bool no_mask; + int rem; + int ret; + + if (!attr) + return 0; + ret = nla_parse_nested(tb, ARRAY_SIZE(bitset_policy) - 1, attr, + bitset_policy, extack); + if (ret < 0) + return ret; + no_mask = tb[ETHTOOL_A_BITSET_NOMASK]; + + if (!tb[ETHTOOL_A_BITSET_BITS]) { + unsigned int change_bits; + + ret = ethnl_compact_sanity_checks(nbits, attr, tb, extack); + if (ret < 0) + return ret; + + change_bits = nla_get_u32(tb[ETHTOOL_A_BITSET_SIZE]); + if (change_bits > nbits) + change_bits = nbits; + bitmap_from_arr32(val, nla_data(tb[ETHTOOL_A_BITSET_VALUE]), + change_bits); + if (change_bits < nbits) + bitmap_clear(val, change_bits, nbits - change_bits); + if (no_mask) { + bitmap_fill(mask, nbits); + } else { + bitmap_from_arr32(mask, + nla_data(tb[ETHTOOL_A_BITSET_MASK]), + change_bits); + if (change_bits < nbits) + bitmap_clear(mask, change_bits, + nbits - change_bits); + } + + return 0; + } + + if (tb[ETHTOOL_A_BITSET_VALUE]) { + NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_BITSET_VALUE], + "value only allowed in compact bitset"); + return -EINVAL; + } + if (tb[ETHTOOL_A_BITSET_MASK]) { + NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_BITSET_MASK], + "mask only allowed in compact bitset"); + return -EINVAL; + } + + bitmap_zero(val, nbits); + if (no_mask) + bitmap_fill(mask, nbits); + else + bitmap_zero(mask, nbits); + + nla_for_each_nested(bit_attr, tb[ETHTOOL_A_BITSET_BITS], rem) { + unsigned int idx; + bool bit_val; + + ret = ethnl_parse_bit(&idx, &bit_val, nbits, bit_attr, no_mask, + names, extack); + if (ret < 0) + return ret; + if (bit_val) + __set_bit(idx, val); + if (!no_mask) + __set_bit(idx, mask); + } + + return 0; +} + +#if BITS_PER_LONG == 64 && defined(__BIG_ENDIAN) + +/* 64-bit big endian architectures are the only case when u32 based bitmaps + * and unsigned long based bitmaps have different memory layout so that we + * cannot simply cast the latter to the former and need actual wrappers + * converting the latter to the former. + * + * To reduce the number of slab allocations, the wrappers use fixed size local + * variables for bitmaps up to ETHNL_SMALL_BITMAP_BITS bits which is the + * majority of bitmaps used by ethtool. + */ +#define ETHNL_SMALL_BITMAP_BITS 128 +#define ETHNL_SMALL_BITMAP_WORDS DIV_ROUND_UP(ETHNL_SMALL_BITMAP_BITS, 32) + +int ethnl_bitset_size(const unsigned long *val, const unsigned long *mask, + unsigned int nbits, ethnl_string_array_t names, + bool compact) +{ + u32 small_mask32[ETHNL_SMALL_BITMAP_WORDS]; + u32 small_val32[ETHNL_SMALL_BITMAP_WORDS]; + u32 *mask32; + u32 *val32; + int ret; + + if (nbits > ETHNL_SMALL_BITMAP_BITS) { + unsigned int nwords = DIV_ROUND_UP(nbits, 32); + + val32 = kmalloc_array(2 * nwords, sizeof(u32), GFP_KERNEL); + if (!val32) + return -ENOMEM; + mask32 = val32 + nwords; + } else { + val32 = small_val32; + mask32 = small_mask32; + } + + bitmap_to_arr32(val32, val, nbits); + if (mask) + bitmap_to_arr32(mask32, mask, nbits); + else + mask32 = NULL; + ret = ethnl_bitset32_size(val32, mask32, nbits, names, compact); + + if (nbits > ETHNL_SMALL_BITMAP_BITS) + kfree(val32); + + return ret; +} + +int ethnl_put_bitset(struct sk_buff *skb, int attrtype, + const unsigned long *val, const unsigned long *mask, + unsigned int nbits, ethnl_string_array_t names, + bool compact) +{ + u32 small_mask32[ETHNL_SMALL_BITMAP_WORDS]; + u32 small_val32[ETHNL_SMALL_BITMAP_WORDS]; + u32 *mask32; + u32 *val32; + int ret; + + if (nbits > ETHNL_SMALL_BITMAP_BITS) { + unsigned int nwords = DIV_ROUND_UP(nbits, 32); + + val32 = kmalloc_array(2 * nwords, sizeof(u32), GFP_KERNEL); + if (!val32) + return -ENOMEM; + mask32 = val32 + nwords; + } else { + val32 = small_val32; + mask32 = small_mask32; + } + + bitmap_to_arr32(val32, val, nbits); + if (mask) + bitmap_to_arr32(mask32, mask, nbits); + else + mask32 = NULL; + ret = ethnl_put_bitset32(skb, attrtype, val32, mask32, nbits, names, + compact); + + if (nbits > ETHNL_SMALL_BITMAP_BITS) + kfree(val32); + + return ret; +} + +int ethnl_update_bitset(unsigned long *bitmap, unsigned int nbits, + const struct nlattr *attr, ethnl_string_array_t names, + struct netlink_ext_ack *extack, bool *mod) +{ + u32 small_bitmap32[ETHNL_SMALL_BITMAP_WORDS]; + u32 *bitmap32 = small_bitmap32; + bool u32_mod = false; + int ret; + + if (nbits > ETHNL_SMALL_BITMAP_BITS) { + unsigned int dst_words = DIV_ROUND_UP(nbits, 32); + + bitmap32 = kmalloc_array(dst_words, sizeof(u32), GFP_KERNEL); + if (!bitmap32) + return -ENOMEM; + } + + bitmap_to_arr32(bitmap32, bitmap, nbits); + ret = ethnl_update_bitset32(bitmap32, nbits, attr, names, extack, + &u32_mod); + if (u32_mod) { + bitmap_from_arr32(bitmap, bitmap32, nbits); + *mod = true; + } + + if (nbits > ETHNL_SMALL_BITMAP_BITS) + kfree(bitmap32); + + return ret; +} + +#else + +/* On little endian 64-bit and all 32-bit architectures, an unsigned long + * based bitmap can be interpreted as u32 based one using a simple cast. + */ + +int ethnl_bitset_size(const unsigned long *val, const unsigned long *mask, + unsigned int nbits, ethnl_string_array_t names, + bool compact) +{ + return ethnl_bitset32_size((const u32 *)val, (const u32 *)mask, nbits, + names, compact); +} + +int ethnl_put_bitset(struct sk_buff *skb, int attrtype, + const unsigned long *val, const unsigned long *mask, + unsigned int nbits, ethnl_string_array_t names, + bool compact) +{ + return ethnl_put_bitset32(skb, attrtype, (const u32 *)val, + (const u32 *)mask, nbits, names, compact); +} + +int ethnl_update_bitset(unsigned long *bitmap, unsigned int nbits, + const struct nlattr *attr, ethnl_string_array_t names, + struct netlink_ext_ack *extack, bool *mod) +{ + return ethnl_update_bitset32((u32 *)bitmap, nbits, attr, names, extack, + mod); +} + +#endif /* BITS_PER_LONG == 64 && defined(__BIG_ENDIAN) */ diff --git a/net/ethtool/bitset.h b/net/ethtool/bitset.h new file mode 100644 index 000000000..c2c2e0051 --- /dev/null +++ b/net/ethtool/bitset.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _NET_ETHTOOL_BITSET_H +#define _NET_ETHTOOL_BITSET_H + +#define ETHNL_MAX_BITSET_SIZE S16_MAX + +typedef const char (*const ethnl_string_array_t)[ETH_GSTRING_LEN]; + +int ethnl_bitset_is_compact(const struct nlattr *bitset, bool *compact); +int ethnl_bitset_size(const unsigned long *val, const unsigned long *mask, + unsigned int nbits, ethnl_string_array_t names, + bool compact); +int ethnl_bitset32_size(const u32 *val, const u32 *mask, unsigned int nbits, + ethnl_string_array_t names, bool compact); +int ethnl_put_bitset(struct sk_buff *skb, int attrtype, + const unsigned long *val, const unsigned long *mask, + unsigned int nbits, ethnl_string_array_t names, + bool compact); +int ethnl_put_bitset32(struct sk_buff *skb, int attrtype, const u32 *val, + const u32 *mask, unsigned int nbits, + ethnl_string_array_t names, bool compact); +int ethnl_update_bitset(unsigned long *bitmap, unsigned int nbits, + const struct nlattr *attr, ethnl_string_array_t names, + struct netlink_ext_ack *extack, bool *mod); +int ethnl_update_bitset32(u32 *bitmap, unsigned int nbits, + const struct nlattr *attr, ethnl_string_array_t names, + struct netlink_ext_ack *extack, bool *mod); +int ethnl_parse_bitset(unsigned long *val, unsigned long *mask, + unsigned int nbits, const struct nlattr *attr, + ethnl_string_array_t names, + struct netlink_ext_ack *extack); + +#endif /* _NET_ETHTOOL_BITSET_H */ diff --git a/net/ethtool/cabletest.c b/net/ethtool/cabletest.c new file mode 100644 index 000000000..63560bbb7 --- /dev/null +++ b/net/ethtool/cabletest.c @@ -0,0 +1,433 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/phy.h> +#include <linux/ethtool_netlink.h> +#include "netlink.h" +#include "common.h" + +/* 802.3 standard allows 100 meters for BaseT cables. However longer + * cables might work, depending on the quality of the cables and the + * PHY. So allow testing for up to 150 meters. + */ +#define MAX_CABLE_LENGTH_CM (150 * 100) + +const struct nla_policy ethnl_cable_test_act_policy[] = { + [ETHTOOL_A_CABLE_TEST_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int ethnl_cable_test_started(struct phy_device *phydev, u8 cmd) +{ + struct sk_buff *skb; + int err = -ENOMEM; + void *ehdr; + + skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!skb) + goto out; + + ehdr = ethnl_bcastmsg_put(skb, cmd); + if (!ehdr) { + err = -EMSGSIZE; + goto out; + } + + err = ethnl_fill_reply_header(skb, phydev->attached_dev, + ETHTOOL_A_CABLE_TEST_NTF_HEADER); + if (err) + goto out; + + err = nla_put_u8(skb, ETHTOOL_A_CABLE_TEST_NTF_STATUS, + ETHTOOL_A_CABLE_TEST_NTF_STATUS_STARTED); + if (err) + goto out; + + genlmsg_end(skb, ehdr); + + return ethnl_multicast(skb, phydev->attached_dev); + +out: + nlmsg_free(skb); + phydev_err(phydev, "%s: Error %pe\n", __func__, ERR_PTR(err)); + + return err; +} + +int ethnl_act_cable_test(struct sk_buff *skb, struct genl_info *info) +{ + struct ethnl_req_info req_info = {}; + const struct ethtool_phy_ops *ops; + struct nlattr **tb = info->attrs; + struct net_device *dev; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_CABLE_TEST_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + + dev = req_info.dev; + if (!dev->phydev) { + ret = -EOPNOTSUPP; + goto out_dev_put; + } + + rtnl_lock(); + ops = ethtool_phy_ops; + if (!ops || !ops->start_cable_test) { + ret = -EOPNOTSUPP; + goto out_rtnl; + } + + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + + ret = ops->start_cable_test(dev->phydev, info->extack); + + ethnl_ops_complete(dev); + + if (!ret) + ethnl_cable_test_started(dev->phydev, + ETHTOOL_MSG_CABLE_TEST_NTF); + +out_rtnl: + rtnl_unlock(); +out_dev_put: + dev_put(dev); + return ret; +} + +int ethnl_cable_test_alloc(struct phy_device *phydev, u8 cmd) +{ + int err = -ENOMEM; + + /* One TDR sample occupies 20 bytes. For a 150 meter cable, + * with four pairs, around 12K is needed. + */ + phydev->skb = genlmsg_new(SZ_16K, GFP_KERNEL); + if (!phydev->skb) + goto out; + + phydev->ehdr = ethnl_bcastmsg_put(phydev->skb, cmd); + if (!phydev->ehdr) { + err = -EMSGSIZE; + goto out; + } + + err = ethnl_fill_reply_header(phydev->skb, phydev->attached_dev, + ETHTOOL_A_CABLE_TEST_NTF_HEADER); + if (err) + goto out; + + err = nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_TEST_NTF_STATUS, + ETHTOOL_A_CABLE_TEST_NTF_STATUS_COMPLETED); + if (err) + goto out; + + phydev->nest = nla_nest_start(phydev->skb, + ETHTOOL_A_CABLE_TEST_NTF_NEST); + if (!phydev->nest) { + err = -EMSGSIZE; + goto out; + } + + return 0; + +out: + nlmsg_free(phydev->skb); + phydev->skb = NULL; + return err; +} +EXPORT_SYMBOL_GPL(ethnl_cable_test_alloc); + +void ethnl_cable_test_free(struct phy_device *phydev) +{ + nlmsg_free(phydev->skb); + phydev->skb = NULL; +} +EXPORT_SYMBOL_GPL(ethnl_cable_test_free); + +void ethnl_cable_test_finished(struct phy_device *phydev) +{ + nla_nest_end(phydev->skb, phydev->nest); + + genlmsg_end(phydev->skb, phydev->ehdr); + + ethnl_multicast(phydev->skb, phydev->attached_dev); +} +EXPORT_SYMBOL_GPL(ethnl_cable_test_finished); + +int ethnl_cable_test_result(struct phy_device *phydev, u8 pair, u8 result) +{ + struct nlattr *nest; + int ret = -EMSGSIZE; + + nest = nla_nest_start(phydev->skb, ETHTOOL_A_CABLE_NEST_RESULT); + if (!nest) + return -EMSGSIZE; + + if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_RESULT_PAIR, pair)) + goto err; + if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_RESULT_CODE, result)) + goto err; + + nla_nest_end(phydev->skb, nest); + return 0; + +err: + nla_nest_cancel(phydev->skb, nest); + return ret; +} +EXPORT_SYMBOL_GPL(ethnl_cable_test_result); + +int ethnl_cable_test_fault_length(struct phy_device *phydev, u8 pair, u32 cm) +{ + struct nlattr *nest; + int ret = -EMSGSIZE; + + nest = nla_nest_start(phydev->skb, + ETHTOOL_A_CABLE_NEST_FAULT_LENGTH); + if (!nest) + return -EMSGSIZE; + + if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_FAULT_LENGTH_PAIR, pair)) + goto err; + if (nla_put_u32(phydev->skb, ETHTOOL_A_CABLE_FAULT_LENGTH_CM, cm)) + goto err; + + nla_nest_end(phydev->skb, nest); + return 0; + +err: + nla_nest_cancel(phydev->skb, nest); + return ret; +} +EXPORT_SYMBOL_GPL(ethnl_cable_test_fault_length); + +struct cable_test_tdr_req_info { + struct ethnl_req_info base; +}; + +static const struct nla_policy cable_test_tdr_act_cfg_policy[] = { + [ETHTOOL_A_CABLE_TEST_TDR_CFG_FIRST] = { .type = NLA_U32 }, + [ETHTOOL_A_CABLE_TEST_TDR_CFG_LAST] = { .type = NLA_U32 }, + [ETHTOOL_A_CABLE_TEST_TDR_CFG_STEP] = { .type = NLA_U32 }, + [ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR] = { .type = NLA_U8 }, +}; + +const struct nla_policy ethnl_cable_test_tdr_act_policy[] = { + [ETHTOOL_A_CABLE_TEST_TDR_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_CABLE_TEST_TDR_CFG] = { .type = NLA_NESTED }, +}; + +/* CABLE_TEST_TDR_ACT */ +static int ethnl_act_cable_test_tdr_cfg(const struct nlattr *nest, + struct genl_info *info, + struct phy_tdr_config *cfg) +{ + struct nlattr *tb[ARRAY_SIZE(cable_test_tdr_act_cfg_policy)]; + int ret; + + cfg->first = 100; + cfg->step = 100; + cfg->last = MAX_CABLE_LENGTH_CM; + cfg->pair = PHY_PAIR_ALL; + + if (!nest) + return 0; + + ret = nla_parse_nested(tb, + ARRAY_SIZE(cable_test_tdr_act_cfg_policy) - 1, + nest, cable_test_tdr_act_cfg_policy, + info->extack); + if (ret < 0) + return ret; + + if (tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_FIRST]) + cfg->first = nla_get_u32( + tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_FIRST]); + + if (tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_LAST]) + cfg->last = nla_get_u32(tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_LAST]); + + if (tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_STEP]) + cfg->step = nla_get_u32(tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_STEP]); + + if (tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR]) { + cfg->pair = nla_get_u8(tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR]); + if (cfg->pair > ETHTOOL_A_CABLE_PAIR_D) { + NL_SET_ERR_MSG_ATTR( + info->extack, + tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_PAIR], + "invalid pair parameter"); + return -EINVAL; + } + } + + if (cfg->first > MAX_CABLE_LENGTH_CM) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_FIRST], + "invalid first parameter"); + return -EINVAL; + } + + if (cfg->last > MAX_CABLE_LENGTH_CM) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_LAST], + "invalid last parameter"); + return -EINVAL; + } + + if (cfg->first > cfg->last) { + NL_SET_ERR_MSG(info->extack, "invalid first/last parameter"); + return -EINVAL; + } + + if (!cfg->step) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_STEP], + "invalid step parameter"); + return -EINVAL; + } + + if (cfg->step > (cfg->last - cfg->first)) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[ETHTOOL_A_CABLE_TEST_TDR_CFG_STEP], + "step parameter too big"); + return -EINVAL; + } + + return 0; +} + +int ethnl_act_cable_test_tdr(struct sk_buff *skb, struct genl_info *info) +{ + struct ethnl_req_info req_info = {}; + const struct ethtool_phy_ops *ops; + struct nlattr **tb = info->attrs; + struct phy_tdr_config cfg; + struct net_device *dev; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_CABLE_TEST_TDR_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + + dev = req_info.dev; + if (!dev->phydev) { + ret = -EOPNOTSUPP; + goto out_dev_put; + } + + ret = ethnl_act_cable_test_tdr_cfg(tb[ETHTOOL_A_CABLE_TEST_TDR_CFG], + info, &cfg); + if (ret) + goto out_dev_put; + + rtnl_lock(); + ops = ethtool_phy_ops; + if (!ops || !ops->start_cable_test_tdr) { + ret = -EOPNOTSUPP; + goto out_rtnl; + } + + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + + ret = ops->start_cable_test_tdr(dev->phydev, info->extack, &cfg); + + ethnl_ops_complete(dev); + + if (!ret) + ethnl_cable_test_started(dev->phydev, + ETHTOOL_MSG_CABLE_TEST_TDR_NTF); + +out_rtnl: + rtnl_unlock(); +out_dev_put: + dev_put(dev); + return ret; +} + +int ethnl_cable_test_amplitude(struct phy_device *phydev, + u8 pair, s16 mV) +{ + struct nlattr *nest; + int ret = -EMSGSIZE; + + nest = nla_nest_start(phydev->skb, + ETHTOOL_A_CABLE_TDR_NEST_AMPLITUDE); + if (!nest) + return -EMSGSIZE; + + if (nla_put_u8(phydev->skb, ETHTOOL_A_CABLE_AMPLITUDE_PAIR, pair)) + goto err; + if (nla_put_u16(phydev->skb, ETHTOOL_A_CABLE_AMPLITUDE_mV, mV)) + goto err; + + nla_nest_end(phydev->skb, nest); + return 0; + +err: + nla_nest_cancel(phydev->skb, nest); + return ret; +} +EXPORT_SYMBOL_GPL(ethnl_cable_test_amplitude); + +int ethnl_cable_test_pulse(struct phy_device *phydev, u16 mV) +{ + struct nlattr *nest; + int ret = -EMSGSIZE; + + nest = nla_nest_start(phydev->skb, ETHTOOL_A_CABLE_TDR_NEST_PULSE); + if (!nest) + return -EMSGSIZE; + + if (nla_put_u16(phydev->skb, ETHTOOL_A_CABLE_PULSE_mV, mV)) + goto err; + + nla_nest_end(phydev->skb, nest); + return 0; + +err: + nla_nest_cancel(phydev->skb, nest); + return ret; +} +EXPORT_SYMBOL_GPL(ethnl_cable_test_pulse); + +int ethnl_cable_test_step(struct phy_device *phydev, u32 first, u32 last, + u32 step) +{ + struct nlattr *nest; + int ret = -EMSGSIZE; + + nest = nla_nest_start(phydev->skb, ETHTOOL_A_CABLE_TDR_NEST_STEP); + if (!nest) + return -EMSGSIZE; + + if (nla_put_u32(phydev->skb, ETHTOOL_A_CABLE_STEP_FIRST_DISTANCE, + first)) + goto err; + + if (nla_put_u32(phydev->skb, ETHTOOL_A_CABLE_STEP_LAST_DISTANCE, last)) + goto err; + + if (nla_put_u32(phydev->skb, ETHTOOL_A_CABLE_STEP_STEP_DISTANCE, step)) + goto err; + + nla_nest_end(phydev->skb, nest); + return 0; + +err: + nla_nest_cancel(phydev->skb, nest); + return ret; +} +EXPORT_SYMBOL_GPL(ethnl_cable_test_step); diff --git a/net/ethtool/channels.c b/net/ethtool/channels.c new file mode 100644 index 000000000..6a070dc8e --- /dev/null +++ b/net/ethtool/channels.c @@ -0,0 +1,224 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <net/xdp_sock_drv.h> + +#include "netlink.h" +#include "common.h" + +struct channels_req_info { + struct ethnl_req_info base; +}; + +struct channels_reply_data { + struct ethnl_reply_data base; + struct ethtool_channels channels; +}; + +#define CHANNELS_REPDATA(__reply_base) \ + container_of(__reply_base, struct channels_reply_data, base) + +const struct nla_policy ethnl_channels_get_policy[] = { + [ETHTOOL_A_CHANNELS_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int channels_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct channels_reply_data *data = CHANNELS_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + if (!dev->ethtool_ops->get_channels) + return -EOPNOTSUPP; + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + dev->ethtool_ops->get_channels(dev, &data->channels); + ethnl_ops_complete(dev); + + return 0; +} + +static int channels_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + return nla_total_size(sizeof(u32)) + /* _CHANNELS_RX_MAX */ + nla_total_size(sizeof(u32)) + /* _CHANNELS_TX_MAX */ + nla_total_size(sizeof(u32)) + /* _CHANNELS_OTHER_MAX */ + nla_total_size(sizeof(u32)) + /* _CHANNELS_COMBINED_MAX */ + nla_total_size(sizeof(u32)) + /* _CHANNELS_RX_COUNT */ + nla_total_size(sizeof(u32)) + /* _CHANNELS_TX_COUNT */ + nla_total_size(sizeof(u32)) + /* _CHANNELS_OTHER_COUNT */ + nla_total_size(sizeof(u32)); /* _CHANNELS_COMBINED_COUNT */ +} + +static int channels_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct channels_reply_data *data = CHANNELS_REPDATA(reply_base); + const struct ethtool_channels *channels = &data->channels; + + if ((channels->max_rx && + (nla_put_u32(skb, ETHTOOL_A_CHANNELS_RX_MAX, + channels->max_rx) || + nla_put_u32(skb, ETHTOOL_A_CHANNELS_RX_COUNT, + channels->rx_count))) || + (channels->max_tx && + (nla_put_u32(skb, ETHTOOL_A_CHANNELS_TX_MAX, + channels->max_tx) || + nla_put_u32(skb, ETHTOOL_A_CHANNELS_TX_COUNT, + channels->tx_count))) || + (channels->max_other && + (nla_put_u32(skb, ETHTOOL_A_CHANNELS_OTHER_MAX, + channels->max_other) || + nla_put_u32(skb, ETHTOOL_A_CHANNELS_OTHER_COUNT, + channels->other_count))) || + (channels->max_combined && + (nla_put_u32(skb, ETHTOOL_A_CHANNELS_COMBINED_MAX, + channels->max_combined) || + nla_put_u32(skb, ETHTOOL_A_CHANNELS_COMBINED_COUNT, + channels->combined_count)))) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_channels_request_ops = { + .request_cmd = ETHTOOL_MSG_CHANNELS_GET, + .reply_cmd = ETHTOOL_MSG_CHANNELS_GET_REPLY, + .hdr_attr = ETHTOOL_A_CHANNELS_HEADER, + .req_info_size = sizeof(struct channels_req_info), + .reply_data_size = sizeof(struct channels_reply_data), + + .prepare_data = channels_prepare_data, + .reply_size = channels_reply_size, + .fill_reply = channels_fill_reply, +}; + +/* CHANNELS_SET */ + +const struct nla_policy ethnl_channels_set_policy[] = { + [ETHTOOL_A_CHANNELS_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_CHANNELS_RX_COUNT] = { .type = NLA_U32 }, + [ETHTOOL_A_CHANNELS_TX_COUNT] = { .type = NLA_U32 }, + [ETHTOOL_A_CHANNELS_OTHER_COUNT] = { .type = NLA_U32 }, + [ETHTOOL_A_CHANNELS_COMBINED_COUNT] = { .type = NLA_U32 }, +}; + +int ethnl_set_channels(struct sk_buff *skb, struct genl_info *info) +{ + unsigned int from_channel, old_total, i; + bool mod = false, mod_combined = false; + struct ethtool_channels channels = {}; + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + u32 err_attr, max_rx_in_use = 0; + const struct ethtool_ops *ops; + struct net_device *dev; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_CHANNELS_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ops = dev->ethtool_ops; + ret = -EOPNOTSUPP; + if (!ops->get_channels || !ops->set_channels) + goto out_dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + ops->get_channels(dev, &channels); + old_total = channels.combined_count + + max(channels.rx_count, channels.tx_count); + + ethnl_update_u32(&channels.rx_count, tb[ETHTOOL_A_CHANNELS_RX_COUNT], + &mod); + ethnl_update_u32(&channels.tx_count, tb[ETHTOOL_A_CHANNELS_TX_COUNT], + &mod); + ethnl_update_u32(&channels.other_count, + tb[ETHTOOL_A_CHANNELS_OTHER_COUNT], &mod); + ethnl_update_u32(&channels.combined_count, + tb[ETHTOOL_A_CHANNELS_COMBINED_COUNT], &mod_combined); + mod |= mod_combined; + ret = 0; + if (!mod) + goto out_ops; + + /* ensure new channel counts are within limits */ + if (channels.rx_count > channels.max_rx) + err_attr = ETHTOOL_A_CHANNELS_RX_COUNT; + else if (channels.tx_count > channels.max_tx) + err_attr = ETHTOOL_A_CHANNELS_TX_COUNT; + else if (channels.other_count > channels.max_other) + err_attr = ETHTOOL_A_CHANNELS_OTHER_COUNT; + else if (channels.combined_count > channels.max_combined) + err_attr = ETHTOOL_A_CHANNELS_COMBINED_COUNT; + else + err_attr = 0; + if (err_attr) { + ret = -EINVAL; + NL_SET_ERR_MSG_ATTR(info->extack, tb[err_attr], + "requested channel count exceeds maximum"); + goto out_ops; + } + + /* ensure there is at least one RX and one TX channel */ + if (!channels.combined_count && !channels.rx_count) + err_attr = ETHTOOL_A_CHANNELS_RX_COUNT; + else if (!channels.combined_count && !channels.tx_count) + err_attr = ETHTOOL_A_CHANNELS_TX_COUNT; + else + err_attr = 0; + if (err_attr) { + if (mod_combined) + err_attr = ETHTOOL_A_CHANNELS_COMBINED_COUNT; + ret = -EINVAL; + NL_SET_ERR_MSG_ATTR(info->extack, tb[err_attr], + "requested channel counts would result in no RX or TX channel being configured"); + goto out_ops; + } + + /* ensure the new Rx count fits within the configured Rx flow + * indirection table settings + */ + if (netif_is_rxfh_configured(dev) && + !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && + (channels.combined_count + channels.rx_count) <= max_rx_in_use) { + ret = -EINVAL; + GENL_SET_ERR_MSG(info, "requested channel counts are too low for existing indirection table settings"); + goto out_ops; + } + + /* Disabling channels, query zero-copy AF_XDP sockets */ + from_channel = channels.combined_count + + min(channels.rx_count, channels.tx_count); + for (i = from_channel; i < old_total; i++) + if (xsk_get_pool_from_qid(dev, i)) { + ret = -EINVAL; + GENL_SET_ERR_MSG(info, "requested channel counts are too low for existing zerocopy AF_XDP sockets"); + goto out_ops; + } + + ret = dev->ethtool_ops->set_channels(dev, &channels); + if (ret < 0) + goto out_ops; + ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} diff --git a/net/ethtool/coalesce.c b/net/ethtool/coalesce.c new file mode 100644 index 000000000..1d6bc132a --- /dev/null +++ b/net/ethtool/coalesce.c @@ -0,0 +1,322 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" + +struct coalesce_req_info { + struct ethnl_req_info base; +}; + +struct coalesce_reply_data { + struct ethnl_reply_data base; + struct ethtool_coalesce coalesce; + u32 supported_params; +}; + +#define COALESCE_REPDATA(__reply_base) \ + container_of(__reply_base, struct coalesce_reply_data, base) + +#define __SUPPORTED_OFFSET ETHTOOL_A_COALESCE_RX_USECS +static u32 attr_to_mask(unsigned int attr_type) +{ + return BIT(attr_type - __SUPPORTED_OFFSET); +} + +/* build time check that indices in ethtool_ops::supported_coalesce_params + * match corresponding attribute types with an offset + */ +#define __CHECK_SUPPORTED_OFFSET(x) \ + static_assert((ETHTOOL_ ## x) == \ + BIT((ETHTOOL_A_ ## x) - __SUPPORTED_OFFSET)) +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_IRQ); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_IRQ); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_IRQ); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_IRQ); +__CHECK_SUPPORTED_OFFSET(COALESCE_STATS_BLOCK_USECS); +__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_RX); +__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_TX); +__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_LOW); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_LOW); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_LOW); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_LOW); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_LOW); +__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_HIGH); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_HIGH); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_HIGH); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_HIGH); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_HIGH); +__CHECK_SUPPORTED_OFFSET(COALESCE_RATE_SAMPLE_INTERVAL); + +const struct nla_policy ethnl_coalesce_get_policy[] = { + [ETHTOOL_A_COALESCE_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int coalesce_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + if (!dev->ethtool_ops->get_coalesce) + return -EOPNOTSUPP; + data->supported_params = dev->ethtool_ops->supported_coalesce_params; + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + ret = dev->ethtool_ops->get_coalesce(dev, &data->coalesce); + ethnl_ops_complete(dev); + + return ret; +} + +static int coalesce_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + return nla_total_size(sizeof(u32)) + /* _RX_USECS */ + nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES */ + nla_total_size(sizeof(u32)) + /* _RX_USECS_IRQ */ + nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_IRQ */ + nla_total_size(sizeof(u32)) + /* _TX_USECS */ + nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES */ + nla_total_size(sizeof(u32)) + /* _TX_USECS_IRQ */ + nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_IRQ */ + nla_total_size(sizeof(u32)) + /* _STATS_BLOCK_USECS */ + nla_total_size(sizeof(u8)) + /* _USE_ADAPTIVE_RX */ + nla_total_size(sizeof(u8)) + /* _USE_ADAPTIVE_TX */ + nla_total_size(sizeof(u32)) + /* _PKT_RATE_LOW */ + nla_total_size(sizeof(u32)) + /* _RX_USECS_LOW */ + nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_LOW */ + nla_total_size(sizeof(u32)) + /* _TX_USECS_LOW */ + nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_LOW */ + nla_total_size(sizeof(u32)) + /* _PKT_RATE_HIGH */ + nla_total_size(sizeof(u32)) + /* _RX_USECS_HIGH */ + nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_HIGH */ + nla_total_size(sizeof(u32)) + /* _TX_USECS_HIGH */ + nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_HIGH */ + nla_total_size(sizeof(u32)); /* _RATE_SAMPLE_INTERVAL */ +} + +static bool coalesce_put_u32(struct sk_buff *skb, u16 attr_type, u32 val, + u32 supported_params) +{ + if (!val && !(supported_params & attr_to_mask(attr_type))) + return false; + return nla_put_u32(skb, attr_type, val); +} + +static bool coalesce_put_bool(struct sk_buff *skb, u16 attr_type, u32 val, + u32 supported_params) +{ + if (!val && !(supported_params & attr_to_mask(attr_type))) + return false; + return nla_put_u8(skb, attr_type, !!val); +} + +static int coalesce_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base); + const struct ethtool_coalesce *coal = &data->coalesce; + u32 supported = data->supported_params; + + if (coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS, + coal->rx_coalesce_usecs, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES, + coal->rx_max_coalesced_frames, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_IRQ, + coal->rx_coalesce_usecs_irq, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ, + coal->rx_max_coalesced_frames_irq, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS, + coal->tx_coalesce_usecs, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES, + coal->tx_max_coalesced_frames, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_IRQ, + coal->tx_coalesce_usecs_irq, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ, + coal->tx_max_coalesced_frames_irq, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_STATS_BLOCK_USECS, + coal->stats_block_coalesce_usecs, supported) || + coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX, + coal->use_adaptive_rx_coalesce, supported) || + coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX, + coal->use_adaptive_tx_coalesce, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_LOW, + coal->pkt_rate_low, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_LOW, + coal->rx_coalesce_usecs_low, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW, + coal->rx_max_coalesced_frames_low, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_LOW, + coal->tx_coalesce_usecs_low, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW, + coal->tx_max_coalesced_frames_low, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_HIGH, + coal->pkt_rate_high, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_HIGH, + coal->rx_coalesce_usecs_high, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH, + coal->rx_max_coalesced_frames_high, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_HIGH, + coal->tx_coalesce_usecs_high, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH, + coal->tx_max_coalesced_frames_high, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL, + coal->rate_sample_interval, supported)) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_coalesce_request_ops = { + .request_cmd = ETHTOOL_MSG_COALESCE_GET, + .reply_cmd = ETHTOOL_MSG_COALESCE_GET_REPLY, + .hdr_attr = ETHTOOL_A_COALESCE_HEADER, + .req_info_size = sizeof(struct coalesce_req_info), + .reply_data_size = sizeof(struct coalesce_reply_data), + + .prepare_data = coalesce_prepare_data, + .reply_size = coalesce_reply_size, + .fill_reply = coalesce_fill_reply, +}; + +/* COALESCE_SET */ + +const struct nla_policy ethnl_coalesce_set_policy[] = { + [ETHTOOL_A_COALESCE_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_COALESCE_RX_USECS] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_MAX_FRAMES] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_USECS_IRQ] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_USECS] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_MAX_FRAMES] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_USECS_IRQ] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_STATS_BLOCK_USECS] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX] = { .type = NLA_U8 }, + [ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX] = { .type = NLA_U8 }, + [ETHTOOL_A_COALESCE_PKT_RATE_LOW] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_USECS_LOW] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_USECS_LOW] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_PKT_RATE_HIGH] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_USECS_HIGH] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_USECS_HIGH] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL] = { .type = NLA_U32 }, +}; + +int ethnl_set_coalesce(struct sk_buff *skb, struct genl_info *info) +{ + struct ethtool_coalesce coalesce = {}; + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + const struct ethtool_ops *ops; + struct net_device *dev; + u32 supported_params; + bool mod = false; + int ret; + u16 a; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_COALESCE_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ops = dev->ethtool_ops; + ret = -EOPNOTSUPP; + if (!ops->get_coalesce || !ops->set_coalesce) + goto out_dev; + + /* make sure that only supported parameters are present */ + supported_params = ops->supported_coalesce_params; + for (a = ETHTOOL_A_COALESCE_RX_USECS; a < __ETHTOOL_A_COALESCE_CNT; a++) + if (tb[a] && !(supported_params & attr_to_mask(a))) { + ret = -EINVAL; + NL_SET_ERR_MSG_ATTR(info->extack, tb[a], + "cannot modify an unsupported parameter"); + goto out_dev; + } + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + ret = ops->get_coalesce(dev, &coalesce); + if (ret < 0) + goto out_ops; + + ethnl_update_u32(&coalesce.rx_coalesce_usecs, + tb[ETHTOOL_A_COALESCE_RX_USECS], &mod); + ethnl_update_u32(&coalesce.rx_max_coalesced_frames, + tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES], &mod); + ethnl_update_u32(&coalesce.rx_coalesce_usecs_irq, + tb[ETHTOOL_A_COALESCE_RX_USECS_IRQ], &mod); + ethnl_update_u32(&coalesce.rx_max_coalesced_frames_irq, + tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ], &mod); + ethnl_update_u32(&coalesce.tx_coalesce_usecs, + tb[ETHTOOL_A_COALESCE_TX_USECS], &mod); + ethnl_update_u32(&coalesce.tx_max_coalesced_frames, + tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES], &mod); + ethnl_update_u32(&coalesce.tx_coalesce_usecs_irq, + tb[ETHTOOL_A_COALESCE_TX_USECS_IRQ], &mod); + ethnl_update_u32(&coalesce.tx_max_coalesced_frames_irq, + tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ], &mod); + ethnl_update_u32(&coalesce.stats_block_coalesce_usecs, + tb[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS], &mod); + ethnl_update_bool32(&coalesce.use_adaptive_rx_coalesce, + tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX], &mod); + ethnl_update_bool32(&coalesce.use_adaptive_tx_coalesce, + tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX], &mod); + ethnl_update_u32(&coalesce.pkt_rate_low, + tb[ETHTOOL_A_COALESCE_PKT_RATE_LOW], &mod); + ethnl_update_u32(&coalesce.rx_coalesce_usecs_low, + tb[ETHTOOL_A_COALESCE_RX_USECS_LOW], &mod); + ethnl_update_u32(&coalesce.rx_max_coalesced_frames_low, + tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW], &mod); + ethnl_update_u32(&coalesce.tx_coalesce_usecs_low, + tb[ETHTOOL_A_COALESCE_TX_USECS_LOW], &mod); + ethnl_update_u32(&coalesce.tx_max_coalesced_frames_low, + tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW], &mod); + ethnl_update_u32(&coalesce.pkt_rate_high, + tb[ETHTOOL_A_COALESCE_PKT_RATE_HIGH], &mod); + ethnl_update_u32(&coalesce.rx_coalesce_usecs_high, + tb[ETHTOOL_A_COALESCE_RX_USECS_HIGH], &mod); + ethnl_update_u32(&coalesce.rx_max_coalesced_frames_high, + tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH], &mod); + ethnl_update_u32(&coalesce.tx_coalesce_usecs_high, + tb[ETHTOOL_A_COALESCE_TX_USECS_HIGH], &mod); + ethnl_update_u32(&coalesce.tx_max_coalesced_frames_high, + tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH], &mod); + ethnl_update_u32(&coalesce.rate_sample_interval, + tb[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL], &mod); + ret = 0; + if (!mod) + goto out_ops; + + ret = dev->ethtool_ops->set_coalesce(dev, &coalesce); + if (ret < 0) + goto out_ops; + ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} diff --git a/net/ethtool/common.c b/net/ethtool/common.c new file mode 100644 index 000000000..24036e305 --- /dev/null +++ b/net/ethtool/common.c @@ -0,0 +1,412 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/ethtool_netlink.h> +#include <linux/net_tstamp.h> +#include <linux/phy.h> +#include <linux/rtnetlink.h> + +#include "common.h" + +const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = { + [NETIF_F_SG_BIT] = "tx-scatter-gather", + [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4", + [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic", + [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6", + [NETIF_F_HIGHDMA_BIT] = "highdma", + [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist", + [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert", + + [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse", + [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter", + [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert", + [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse", + [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter", + [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged", + [NETIF_F_GSO_BIT] = "tx-generic-segmentation", + [NETIF_F_LLTX_BIT] = "tx-lockless", + [NETIF_F_NETNS_LOCAL_BIT] = "netns-local", + [NETIF_F_GRO_BIT] = "rx-gro", + [NETIF_F_GRO_HW_BIT] = "rx-gro-hw", + [NETIF_F_LRO_BIT] = "rx-lro", + + [NETIF_F_TSO_BIT] = "tx-tcp-segmentation", + [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust", + [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation", + [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation", + [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation", + [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation", + [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation", + [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation", + [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation", + [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation", + [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation", + [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation", + [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial", + [NETIF_F_GSO_TUNNEL_REMCSUM_BIT] = "tx-tunnel-remcsum-segmentation", + [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation", + [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation", + [NETIF_F_GSO_UDP_L4_BIT] = "tx-udp-segmentation", + [NETIF_F_GSO_FRAGLIST_BIT] = "tx-gso-list", + + [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc", + [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp", + [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu", + [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter", + [NETIF_F_RXHASH_BIT] = "rx-hashing", + [NETIF_F_RXCSUM_BIT] = "rx-checksum", + [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy", + [NETIF_F_LOOPBACK_BIT] = "loopback", + [NETIF_F_RXFCS_BIT] = "rx-fcs", + [NETIF_F_RXALL_BIT] = "rx-all", + [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload", + [NETIF_F_HW_TC_BIT] = "hw-tc-offload", + [NETIF_F_HW_ESP_BIT] = "esp-hw-offload", + [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload", + [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload", + [NETIF_F_HW_TLS_RECORD_BIT] = "tls-hw-record", + [NETIF_F_HW_TLS_TX_BIT] = "tls-hw-tx-offload", + [NETIF_F_HW_TLS_RX_BIT] = "tls-hw-rx-offload", + [NETIF_F_GRO_FRAGLIST_BIT] = "rx-gro-list", + [NETIF_F_HW_MACSEC_BIT] = "macsec-hw-offload", +}; + +const char +rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = { + [ETH_RSS_HASH_TOP_BIT] = "toeplitz", + [ETH_RSS_HASH_XOR_BIT] = "xor", + [ETH_RSS_HASH_CRC32_BIT] = "crc32", +}; + +const char +tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = { + [ETHTOOL_ID_UNSPEC] = "Unspec", + [ETHTOOL_RX_COPYBREAK] = "rx-copybreak", + [ETHTOOL_TX_COPYBREAK] = "tx-copybreak", + [ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout", +}; + +const char +phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = { + [ETHTOOL_ID_UNSPEC] = "Unspec", + [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift", + [ETHTOOL_PHY_FAST_LINK_DOWN] = "phy-fast-link-down", + [ETHTOOL_PHY_EDPD] = "phy-energy-detect-power-down", +}; + +#define __LINK_MODE_NAME(speed, type, duplex) \ + #speed "base" #type "/" #duplex +#define __DEFINE_LINK_MODE_NAME(speed, type, duplex) \ + [ETHTOOL_LINK_MODE(speed, type, duplex)] = \ + __LINK_MODE_NAME(speed, type, duplex) +#define __DEFINE_SPECIAL_MODE_NAME(_mode, _name) \ + [ETHTOOL_LINK_MODE_ ## _mode ## _BIT] = _name + +const char link_mode_names[][ETH_GSTRING_LEN] = { + __DEFINE_LINK_MODE_NAME(10, T, Half), + __DEFINE_LINK_MODE_NAME(10, T, Full), + __DEFINE_LINK_MODE_NAME(100, T, Half), + __DEFINE_LINK_MODE_NAME(100, T, Full), + __DEFINE_LINK_MODE_NAME(1000, T, Half), + __DEFINE_LINK_MODE_NAME(1000, T, Full), + __DEFINE_SPECIAL_MODE_NAME(Autoneg, "Autoneg"), + __DEFINE_SPECIAL_MODE_NAME(TP, "TP"), + __DEFINE_SPECIAL_MODE_NAME(AUI, "AUI"), + __DEFINE_SPECIAL_MODE_NAME(MII, "MII"), + __DEFINE_SPECIAL_MODE_NAME(FIBRE, "FIBRE"), + __DEFINE_SPECIAL_MODE_NAME(BNC, "BNC"), + __DEFINE_LINK_MODE_NAME(10000, T, Full), + __DEFINE_SPECIAL_MODE_NAME(Pause, "Pause"), + __DEFINE_SPECIAL_MODE_NAME(Asym_Pause, "Asym_Pause"), + __DEFINE_LINK_MODE_NAME(2500, X, Full), + __DEFINE_SPECIAL_MODE_NAME(Backplane, "Backplane"), + __DEFINE_LINK_MODE_NAME(1000, KX, Full), + __DEFINE_LINK_MODE_NAME(10000, KX4, Full), + __DEFINE_LINK_MODE_NAME(10000, KR, Full), + __DEFINE_SPECIAL_MODE_NAME(10000baseR_FEC, "10000baseR_FEC"), + __DEFINE_LINK_MODE_NAME(20000, MLD2, Full), + __DEFINE_LINK_MODE_NAME(20000, KR2, Full), + __DEFINE_LINK_MODE_NAME(40000, KR4, Full), + __DEFINE_LINK_MODE_NAME(40000, CR4, Full), + __DEFINE_LINK_MODE_NAME(40000, SR4, Full), + __DEFINE_LINK_MODE_NAME(40000, LR4, Full), + __DEFINE_LINK_MODE_NAME(56000, KR4, Full), + __DEFINE_LINK_MODE_NAME(56000, CR4, Full), + __DEFINE_LINK_MODE_NAME(56000, SR4, Full), + __DEFINE_LINK_MODE_NAME(56000, LR4, Full), + __DEFINE_LINK_MODE_NAME(25000, CR, Full), + __DEFINE_LINK_MODE_NAME(25000, KR, Full), + __DEFINE_LINK_MODE_NAME(25000, SR, Full), + __DEFINE_LINK_MODE_NAME(50000, CR2, Full), + __DEFINE_LINK_MODE_NAME(50000, KR2, Full), + __DEFINE_LINK_MODE_NAME(100000, KR4, Full), + __DEFINE_LINK_MODE_NAME(100000, SR4, Full), + __DEFINE_LINK_MODE_NAME(100000, CR4, Full), + __DEFINE_LINK_MODE_NAME(100000, LR4_ER4, Full), + __DEFINE_LINK_MODE_NAME(50000, SR2, Full), + __DEFINE_LINK_MODE_NAME(1000, X, Full), + __DEFINE_LINK_MODE_NAME(10000, CR, Full), + __DEFINE_LINK_MODE_NAME(10000, SR, Full), + __DEFINE_LINK_MODE_NAME(10000, LR, Full), + __DEFINE_LINK_MODE_NAME(10000, LRM, Full), + __DEFINE_LINK_MODE_NAME(10000, ER, Full), + __DEFINE_LINK_MODE_NAME(2500, T, Full), + __DEFINE_LINK_MODE_NAME(5000, T, Full), + __DEFINE_SPECIAL_MODE_NAME(FEC_NONE, "None"), + __DEFINE_SPECIAL_MODE_NAME(FEC_RS, "RS"), + __DEFINE_SPECIAL_MODE_NAME(FEC_BASER, "BASER"), + __DEFINE_LINK_MODE_NAME(50000, KR, Full), + __DEFINE_LINK_MODE_NAME(50000, SR, Full), + __DEFINE_LINK_MODE_NAME(50000, CR, Full), + __DEFINE_LINK_MODE_NAME(50000, LR_ER_FR, Full), + __DEFINE_LINK_MODE_NAME(50000, DR, Full), + __DEFINE_LINK_MODE_NAME(100000, KR2, Full), + __DEFINE_LINK_MODE_NAME(100000, SR2, Full), + __DEFINE_LINK_MODE_NAME(100000, CR2, Full), + __DEFINE_LINK_MODE_NAME(100000, LR2_ER2_FR2, Full), + __DEFINE_LINK_MODE_NAME(100000, DR2, Full), + __DEFINE_LINK_MODE_NAME(200000, KR4, Full), + __DEFINE_LINK_MODE_NAME(200000, SR4, Full), + __DEFINE_LINK_MODE_NAME(200000, LR4_ER4_FR4, Full), + __DEFINE_LINK_MODE_NAME(200000, DR4, Full), + __DEFINE_LINK_MODE_NAME(200000, CR4, Full), + __DEFINE_LINK_MODE_NAME(100, T1, Full), + __DEFINE_LINK_MODE_NAME(1000, T1, Full), + __DEFINE_LINK_MODE_NAME(400000, KR8, Full), + __DEFINE_LINK_MODE_NAME(400000, SR8, Full), + __DEFINE_LINK_MODE_NAME(400000, LR8_ER8_FR8, Full), + __DEFINE_LINK_MODE_NAME(400000, DR8, Full), + __DEFINE_LINK_MODE_NAME(400000, CR8, Full), + __DEFINE_SPECIAL_MODE_NAME(FEC_LLRS, "LLRS"), + __DEFINE_LINK_MODE_NAME(100000, KR, Full), + __DEFINE_LINK_MODE_NAME(100000, SR, Full), + __DEFINE_LINK_MODE_NAME(100000, LR_ER_FR, Full), + __DEFINE_LINK_MODE_NAME(100000, DR, Full), + __DEFINE_LINK_MODE_NAME(100000, CR, Full), + __DEFINE_LINK_MODE_NAME(200000, KR2, Full), + __DEFINE_LINK_MODE_NAME(200000, SR2, Full), + __DEFINE_LINK_MODE_NAME(200000, LR2_ER2_FR2, Full), + __DEFINE_LINK_MODE_NAME(200000, DR2, Full), + __DEFINE_LINK_MODE_NAME(200000, CR2, Full), + __DEFINE_LINK_MODE_NAME(400000, KR4, Full), + __DEFINE_LINK_MODE_NAME(400000, SR4, Full), + __DEFINE_LINK_MODE_NAME(400000, LR4_ER4_FR4, Full), + __DEFINE_LINK_MODE_NAME(400000, DR4, Full), + __DEFINE_LINK_MODE_NAME(400000, CR4, Full), + __DEFINE_LINK_MODE_NAME(100, FX, Half), + __DEFINE_LINK_MODE_NAME(100, FX, Full), +}; +static_assert(ARRAY_SIZE(link_mode_names) == __ETHTOOL_LINK_MODE_MASK_NBITS); + +const char netif_msg_class_names[][ETH_GSTRING_LEN] = { + [NETIF_MSG_DRV_BIT] = "drv", + [NETIF_MSG_PROBE_BIT] = "probe", + [NETIF_MSG_LINK_BIT] = "link", + [NETIF_MSG_TIMER_BIT] = "timer", + [NETIF_MSG_IFDOWN_BIT] = "ifdown", + [NETIF_MSG_IFUP_BIT] = "ifup", + [NETIF_MSG_RX_ERR_BIT] = "rx_err", + [NETIF_MSG_TX_ERR_BIT] = "tx_err", + [NETIF_MSG_TX_QUEUED_BIT] = "tx_queued", + [NETIF_MSG_INTR_BIT] = "intr", + [NETIF_MSG_TX_DONE_BIT] = "tx_done", + [NETIF_MSG_RX_STATUS_BIT] = "rx_status", + [NETIF_MSG_PKTDATA_BIT] = "pktdata", + [NETIF_MSG_HW_BIT] = "hw", + [NETIF_MSG_WOL_BIT] = "wol", +}; +static_assert(ARRAY_SIZE(netif_msg_class_names) == NETIF_MSG_CLASS_COUNT); + +const char wol_mode_names[][ETH_GSTRING_LEN] = { + [const_ilog2(WAKE_PHY)] = "phy", + [const_ilog2(WAKE_UCAST)] = "ucast", + [const_ilog2(WAKE_MCAST)] = "mcast", + [const_ilog2(WAKE_BCAST)] = "bcast", + [const_ilog2(WAKE_ARP)] = "arp", + [const_ilog2(WAKE_MAGIC)] = "magic", + [const_ilog2(WAKE_MAGICSECURE)] = "magicsecure", + [const_ilog2(WAKE_FILTER)] = "filter", +}; +static_assert(ARRAY_SIZE(wol_mode_names) == WOL_MODE_COUNT); + +const char sof_timestamping_names[][ETH_GSTRING_LEN] = { + [const_ilog2(SOF_TIMESTAMPING_TX_HARDWARE)] = "hardware-transmit", + [const_ilog2(SOF_TIMESTAMPING_TX_SOFTWARE)] = "software-transmit", + [const_ilog2(SOF_TIMESTAMPING_RX_HARDWARE)] = "hardware-receive", + [const_ilog2(SOF_TIMESTAMPING_RX_SOFTWARE)] = "software-receive", + [const_ilog2(SOF_TIMESTAMPING_SOFTWARE)] = "software-system-clock", + [const_ilog2(SOF_TIMESTAMPING_SYS_HARDWARE)] = "hardware-legacy-clock", + [const_ilog2(SOF_TIMESTAMPING_RAW_HARDWARE)] = "hardware-raw-clock", + [const_ilog2(SOF_TIMESTAMPING_OPT_ID)] = "option-id", + [const_ilog2(SOF_TIMESTAMPING_TX_SCHED)] = "sched-transmit", + [const_ilog2(SOF_TIMESTAMPING_TX_ACK)] = "ack-transmit", + [const_ilog2(SOF_TIMESTAMPING_OPT_CMSG)] = "option-cmsg", + [const_ilog2(SOF_TIMESTAMPING_OPT_TSONLY)] = "option-tsonly", + [const_ilog2(SOF_TIMESTAMPING_OPT_STATS)] = "option-stats", + [const_ilog2(SOF_TIMESTAMPING_OPT_PKTINFO)] = "option-pktinfo", + [const_ilog2(SOF_TIMESTAMPING_OPT_TX_SWHW)] = "option-tx-swhw", +}; +static_assert(ARRAY_SIZE(sof_timestamping_names) == __SOF_TIMESTAMPING_CNT); + +const char ts_tx_type_names[][ETH_GSTRING_LEN] = { + [HWTSTAMP_TX_OFF] = "off", + [HWTSTAMP_TX_ON] = "on", + [HWTSTAMP_TX_ONESTEP_SYNC] = "onestep-sync", + [HWTSTAMP_TX_ONESTEP_P2P] = "onestep-p2p", +}; +static_assert(ARRAY_SIZE(ts_tx_type_names) == __HWTSTAMP_TX_CNT); + +const char ts_rx_filter_names[][ETH_GSTRING_LEN] = { + [HWTSTAMP_FILTER_NONE] = "none", + [HWTSTAMP_FILTER_ALL] = "all", + [HWTSTAMP_FILTER_SOME] = "some", + [HWTSTAMP_FILTER_PTP_V1_L4_EVENT] = "ptpv1-l4-event", + [HWTSTAMP_FILTER_PTP_V1_L4_SYNC] = "ptpv1-l4-sync", + [HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ] = "ptpv1-l4-delay-req", + [HWTSTAMP_FILTER_PTP_V2_L4_EVENT] = "ptpv2-l4-event", + [HWTSTAMP_FILTER_PTP_V2_L4_SYNC] = "ptpv2-l4-sync", + [HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ] = "ptpv2-l4-delay-req", + [HWTSTAMP_FILTER_PTP_V2_L2_EVENT] = "ptpv2-l2-event", + [HWTSTAMP_FILTER_PTP_V2_L2_SYNC] = "ptpv2-l2-sync", + [HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ] = "ptpv2-l2-delay-req", + [HWTSTAMP_FILTER_PTP_V2_EVENT] = "ptpv2-event", + [HWTSTAMP_FILTER_PTP_V2_SYNC] = "ptpv2-sync", + [HWTSTAMP_FILTER_PTP_V2_DELAY_REQ] = "ptpv2-delay-req", + [HWTSTAMP_FILTER_NTP_ALL] = "ntp-all", +}; +static_assert(ARRAY_SIZE(ts_rx_filter_names) == __HWTSTAMP_FILTER_CNT); + +const char udp_tunnel_type_names[][ETH_GSTRING_LEN] = { + [ETHTOOL_UDP_TUNNEL_TYPE_VXLAN] = "vxlan", + [ETHTOOL_UDP_TUNNEL_TYPE_GENEVE] = "geneve", + [ETHTOOL_UDP_TUNNEL_TYPE_VXLAN_GPE] = "vxlan-gpe", +}; +static_assert(ARRAY_SIZE(udp_tunnel_type_names) == + __ETHTOOL_UDP_TUNNEL_TYPE_CNT); + +/* return false if legacy contained non-0 deprecated fields + * maxtxpkt/maxrxpkt. rest of ksettings always updated + */ +bool +convert_legacy_settings_to_link_ksettings( + struct ethtool_link_ksettings *link_ksettings, + const struct ethtool_cmd *legacy_settings) +{ + bool retval = true; + + memset(link_ksettings, 0, sizeof(*link_ksettings)); + + /* This is used to tell users that driver is still using these + * deprecated legacy fields, and they should not use + * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS + */ + if (legacy_settings->maxtxpkt || + legacy_settings->maxrxpkt) + retval = false; + + ethtool_convert_legacy_u32_to_link_mode( + link_ksettings->link_modes.supported, + legacy_settings->supported); + ethtool_convert_legacy_u32_to_link_mode( + link_ksettings->link_modes.advertising, + legacy_settings->advertising); + ethtool_convert_legacy_u32_to_link_mode( + link_ksettings->link_modes.lp_advertising, + legacy_settings->lp_advertising); + link_ksettings->base.speed + = ethtool_cmd_speed(legacy_settings); + link_ksettings->base.duplex + = legacy_settings->duplex; + link_ksettings->base.port + = legacy_settings->port; + link_ksettings->base.phy_address + = legacy_settings->phy_address; + link_ksettings->base.autoneg + = legacy_settings->autoneg; + link_ksettings->base.mdio_support + = legacy_settings->mdio_support; + link_ksettings->base.eth_tp_mdix + = legacy_settings->eth_tp_mdix; + link_ksettings->base.eth_tp_mdix_ctrl + = legacy_settings->eth_tp_mdix_ctrl; + return retval; +} + +int __ethtool_get_link(struct net_device *dev) +{ + if (!dev->ethtool_ops->get_link) + return -EOPNOTSUPP; + + return netif_running(dev) && dev->ethtool_ops->get_link(dev); +} + +int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max) +{ + u32 dev_size, current_max = 0; + u32 *indir; + int ret; + + if (!dev->ethtool_ops->get_rxfh_indir_size || + !dev->ethtool_ops->get_rxfh) + return -EOPNOTSUPP; + dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); + if (dev_size == 0) + return -EOPNOTSUPP; + + indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); + if (!indir) + return -ENOMEM; + + ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); + if (ret) + goto out; + + while (dev_size--) + current_max = max(current_max, indir[dev_size]); + + *max = current_max; + +out: + kfree(indir); + return ret; +} + +int ethtool_check_ops(const struct ethtool_ops *ops) +{ + if (WARN_ON(ops->set_coalesce && !ops->supported_coalesce_params)) + return -EINVAL; + /* NOTE: sufficiently insane drivers may swap ethtool_ops at runtime, + * the fact that ops are checked at registration time does not + * mean the ops attached to a netdev later on are sane. + */ + return 0; +} + +int __ethtool_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) +{ + const struct ethtool_ops *ops = dev->ethtool_ops; + struct phy_device *phydev = dev->phydev; + + memset(info, 0, sizeof(*info)); + info->cmd = ETHTOOL_GET_TS_INFO; + + if (phy_has_tsinfo(phydev)) + return phy_ts_info(phydev, info); + if (ops->get_ts_info) + return ops->get_ts_info(dev, info); + + info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | + SOF_TIMESTAMPING_SOFTWARE; + info->phc_index = -1; + + return 0; +} + +const struct ethtool_phy_ops *ethtool_phy_ops; + +void ethtool_set_ethtool_phy_ops(const struct ethtool_phy_ops *ops) +{ + rtnl_lock(); + ethtool_phy_ops = ops; + rtnl_unlock(); +} +EXPORT_SYMBOL_GPL(ethtool_set_ethtool_phy_ops); diff --git a/net/ethtool/common.h b/net/ethtool/common.h new file mode 100644 index 000000000..3d9251c95 --- /dev/null +++ b/net/ethtool/common.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _ETHTOOL_COMMON_H +#define _ETHTOOL_COMMON_H + +#include <linux/netdevice.h> +#include <linux/ethtool.h> + +#define ETHTOOL_DEV_FEATURE_WORDS DIV_ROUND_UP(NETDEV_FEATURE_COUNT, 32) + +/* compose link mode index from speed, type and duplex */ +#define ETHTOOL_LINK_MODE(speed, type, duplex) \ + ETHTOOL_LINK_MODE_ ## speed ## base ## type ## _ ## duplex ## _BIT + +#define __SOF_TIMESTAMPING_CNT (const_ilog2(SOF_TIMESTAMPING_LAST) + 1) + +extern const char +netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN]; +extern const char +rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN]; +extern const char +tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN]; +extern const char +phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN]; +extern const char link_mode_names[][ETH_GSTRING_LEN]; +extern const char netif_msg_class_names[][ETH_GSTRING_LEN]; +extern const char wol_mode_names[][ETH_GSTRING_LEN]; +extern const char sof_timestamping_names[][ETH_GSTRING_LEN]; +extern const char ts_tx_type_names[][ETH_GSTRING_LEN]; +extern const char ts_rx_filter_names[][ETH_GSTRING_LEN]; +extern const char udp_tunnel_type_names[][ETH_GSTRING_LEN]; + +int __ethtool_get_link(struct net_device *dev); + +bool convert_legacy_settings_to_link_ksettings( + struct ethtool_link_ksettings *link_ksettings, + const struct ethtool_cmd *legacy_settings); +int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max); +int __ethtool_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info); + +extern const struct ethtool_phy_ops *ethtool_phy_ops; + +#endif /* _ETHTOOL_COMMON_H */ diff --git a/net/ethtool/debug.c b/net/ethtool/debug.c new file mode 100644 index 000000000..f99912d79 --- /dev/null +++ b/net/ethtool/debug.c @@ -0,0 +1,128 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" +#include "bitset.h" + +struct debug_req_info { + struct ethnl_req_info base; +}; + +struct debug_reply_data { + struct ethnl_reply_data base; + u32 msg_mask; +}; + +#define DEBUG_REPDATA(__reply_base) \ + container_of(__reply_base, struct debug_reply_data, base) + +const struct nla_policy ethnl_debug_get_policy[] = { + [ETHTOOL_A_DEBUG_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int debug_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct debug_reply_data *data = DEBUG_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + if (!dev->ethtool_ops->get_msglevel) + return -EOPNOTSUPP; + + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + data->msg_mask = dev->ethtool_ops->get_msglevel(dev); + ethnl_ops_complete(dev); + + return 0; +} + +static int debug_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct debug_reply_data *data = DEBUG_REPDATA(reply_base); + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + + return ethnl_bitset32_size(&data->msg_mask, NULL, NETIF_MSG_CLASS_COUNT, + netif_msg_class_names, compact); +} + +static int debug_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct debug_reply_data *data = DEBUG_REPDATA(reply_base); + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + + return ethnl_put_bitset32(skb, ETHTOOL_A_DEBUG_MSGMASK, &data->msg_mask, + NULL, NETIF_MSG_CLASS_COUNT, + netif_msg_class_names, compact); +} + +const struct ethnl_request_ops ethnl_debug_request_ops = { + .request_cmd = ETHTOOL_MSG_DEBUG_GET, + .reply_cmd = ETHTOOL_MSG_DEBUG_GET_REPLY, + .hdr_attr = ETHTOOL_A_DEBUG_HEADER, + .req_info_size = sizeof(struct debug_req_info), + .reply_data_size = sizeof(struct debug_reply_data), + + .prepare_data = debug_prepare_data, + .reply_size = debug_reply_size, + .fill_reply = debug_fill_reply, +}; + +/* DEBUG_SET */ + +const struct nla_policy ethnl_debug_set_policy[] = { + [ETHTOOL_A_DEBUG_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_NESTED }, +}; + +int ethnl_set_debug(struct sk_buff *skb, struct genl_info *info) +{ + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + struct net_device *dev; + bool mod = false; + u32 msg_mask; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_DEBUG_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ret = -EOPNOTSUPP; + if (!dev->ethtool_ops->get_msglevel || !dev->ethtool_ops->set_msglevel) + goto out_dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + + msg_mask = dev->ethtool_ops->get_msglevel(dev); + ret = ethnl_update_bitset32(&msg_mask, NETIF_MSG_CLASS_COUNT, + tb[ETHTOOL_A_DEBUG_MSGMASK], + netif_msg_class_names, info->extack, &mod); + if (ret < 0 || !mod) + goto out_ops; + + dev->ethtool_ops->set_msglevel(dev, msg_mask); + ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} diff --git a/net/ethtool/eee.c b/net/ethtool/eee.c new file mode 100644 index 000000000..e10bfcc07 --- /dev/null +++ b/net/ethtool/eee.c @@ -0,0 +1,190 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" +#include "bitset.h" + +#define EEE_MODES_COUNT \ + (sizeof_field(struct ethtool_eee, supported) * BITS_PER_BYTE) + +struct eee_req_info { + struct ethnl_req_info base; +}; + +struct eee_reply_data { + struct ethnl_reply_data base; + struct ethtool_eee eee; +}; + +#define EEE_REPDATA(__reply_base) \ + container_of(__reply_base, struct eee_reply_data, base) + +const struct nla_policy ethnl_eee_get_policy[] = { + [ETHTOOL_A_EEE_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int eee_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct eee_reply_data *data = EEE_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + if (!dev->ethtool_ops->get_eee) + return -EOPNOTSUPP; + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + ret = dev->ethtool_ops->get_eee(dev, &data->eee); + ethnl_ops_complete(dev); + + return ret; +} + +static int eee_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const struct eee_reply_data *data = EEE_REPDATA(reply_base); + const struct ethtool_eee *eee = &data->eee; + int len = 0; + int ret; + + BUILD_BUG_ON(sizeof(eee->advertised) * BITS_PER_BYTE != + EEE_MODES_COUNT); + BUILD_BUG_ON(sizeof(eee->lp_advertised) * BITS_PER_BYTE != + EEE_MODES_COUNT); + + /* MODES_OURS */ + ret = ethnl_bitset32_size(&eee->advertised, &eee->supported, + EEE_MODES_COUNT, link_mode_names, compact); + if (ret < 0) + return ret; + len += ret; + /* MODES_PEERS */ + ret = ethnl_bitset32_size(&eee->lp_advertised, NULL, + EEE_MODES_COUNT, link_mode_names, compact); + if (ret < 0) + return ret; + len += ret; + + len += nla_total_size(sizeof(u8)) + /* _EEE_ACTIVE */ + nla_total_size(sizeof(u8)) + /* _EEE_ENABLED */ + nla_total_size(sizeof(u8)) + /* _EEE_TX_LPI_ENABLED */ + nla_total_size(sizeof(u32)); /* _EEE_TX_LPI_TIMER */ + + return len; +} + +static int eee_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const struct eee_reply_data *data = EEE_REPDATA(reply_base); + const struct ethtool_eee *eee = &data->eee; + int ret; + + ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_OURS, + &eee->advertised, &eee->supported, + EEE_MODES_COUNT, link_mode_names, compact); + if (ret < 0) + return ret; + ret = ethnl_put_bitset32(skb, ETHTOOL_A_EEE_MODES_PEER, + &eee->lp_advertised, NULL, EEE_MODES_COUNT, + link_mode_names, compact); + if (ret < 0) + return ret; + + if (nla_put_u8(skb, ETHTOOL_A_EEE_ACTIVE, !!eee->eee_active) || + nla_put_u8(skb, ETHTOOL_A_EEE_ENABLED, !!eee->eee_enabled) || + nla_put_u8(skb, ETHTOOL_A_EEE_TX_LPI_ENABLED, + !!eee->tx_lpi_enabled) || + nla_put_u32(skb, ETHTOOL_A_EEE_TX_LPI_TIMER, eee->tx_lpi_timer)) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_eee_request_ops = { + .request_cmd = ETHTOOL_MSG_EEE_GET, + .reply_cmd = ETHTOOL_MSG_EEE_GET_REPLY, + .hdr_attr = ETHTOOL_A_EEE_HEADER, + .req_info_size = sizeof(struct eee_req_info), + .reply_data_size = sizeof(struct eee_reply_data), + + .prepare_data = eee_prepare_data, + .reply_size = eee_reply_size, + .fill_reply = eee_fill_reply, +}; + +/* EEE_SET */ + +const struct nla_policy ethnl_eee_set_policy[] = { + [ETHTOOL_A_EEE_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_EEE_MODES_OURS] = { .type = NLA_NESTED }, + [ETHTOOL_A_EEE_ENABLED] = { .type = NLA_U8 }, + [ETHTOOL_A_EEE_TX_LPI_ENABLED] = { .type = NLA_U8 }, + [ETHTOOL_A_EEE_TX_LPI_TIMER] = { .type = NLA_U32 }, +}; + +int ethnl_set_eee(struct sk_buff *skb, struct genl_info *info) +{ + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + const struct ethtool_ops *ops; + struct ethtool_eee eee = {}; + struct net_device *dev; + bool mod = false; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_EEE_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ops = dev->ethtool_ops; + ret = -EOPNOTSUPP; + if (!ops->get_eee || !ops->set_eee) + goto out_dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + ret = ops->get_eee(dev, &eee); + if (ret < 0) + goto out_ops; + + ret = ethnl_update_bitset32(&eee.advertised, EEE_MODES_COUNT, + tb[ETHTOOL_A_EEE_MODES_OURS], + link_mode_names, info->extack, &mod); + if (ret < 0) + goto out_ops; + ethnl_update_bool32(&eee.eee_enabled, tb[ETHTOOL_A_EEE_ENABLED], &mod); + ethnl_update_bool32(&eee.tx_lpi_enabled, + tb[ETHTOOL_A_EEE_TX_LPI_ENABLED], &mod); + ethnl_update_u32(&eee.tx_lpi_timer, tb[ETHTOOL_A_EEE_TX_LPI_TIMER], + &mod); + ret = 0; + if (!mod) + goto out_ops; + + ret = dev->ethtool_ops->set_eee(dev, &eee); + if (ret < 0) + goto out_ops; + ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} diff --git a/net/ethtool/features.c b/net/ethtool/features.c new file mode 100644 index 000000000..faccab84d --- /dev/null +++ b/net/ethtool/features.c @@ -0,0 +1,294 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" +#include "bitset.h" + +struct features_req_info { + struct ethnl_req_info base; +}; + +struct features_reply_data { + struct ethnl_reply_data base; + u32 hw[ETHTOOL_DEV_FEATURE_WORDS]; + u32 wanted[ETHTOOL_DEV_FEATURE_WORDS]; + u32 active[ETHTOOL_DEV_FEATURE_WORDS]; + u32 nochange[ETHTOOL_DEV_FEATURE_WORDS]; + u32 all[ETHTOOL_DEV_FEATURE_WORDS]; +}; + +#define FEATURES_REPDATA(__reply_base) \ + container_of(__reply_base, struct features_reply_data, base) + +const struct nla_policy ethnl_features_get_policy[] = { + [ETHTOOL_A_FEATURES_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static void ethnl_features_to_bitmap32(u32 *dest, netdev_features_t src) +{ + unsigned int i; + + for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; i++) + dest[i] = src >> (32 * i); +} + +static int features_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct features_reply_data *data = FEATURES_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + netdev_features_t all_features; + + ethnl_features_to_bitmap32(data->hw, dev->hw_features); + ethnl_features_to_bitmap32(data->wanted, dev->wanted_features); + ethnl_features_to_bitmap32(data->active, dev->features); + ethnl_features_to_bitmap32(data->nochange, NETIF_F_NEVER_CHANGE); + all_features = GENMASK_ULL(NETDEV_FEATURE_COUNT - 1, 0); + ethnl_features_to_bitmap32(data->all, all_features); + + return 0; +} + +static int features_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct features_reply_data *data = FEATURES_REPDATA(reply_base); + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + unsigned int len = 0; + int ret; + + ret = ethnl_bitset32_size(data->hw, data->all, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + return ret; + len += ret; + ret = ethnl_bitset32_size(data->wanted, NULL, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + return ret; + len += ret; + ret = ethnl_bitset32_size(data->active, NULL, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + return ret; + len += ret; + ret = ethnl_bitset32_size(data->nochange, NULL, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + return ret; + len += ret; + + return len; +} + +static int features_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct features_reply_data *data = FEATURES_REPDATA(reply_base); + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + int ret; + + ret = ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_HW, data->hw, + data->all, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + return ret; + ret = ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_WANTED, data->wanted, + NULL, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + return ret; + ret = ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_ACTIVE, data->active, + NULL, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + return ret; + return ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_NOCHANGE, + data->nochange, NULL, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); +} + +const struct ethnl_request_ops ethnl_features_request_ops = { + .request_cmd = ETHTOOL_MSG_FEATURES_GET, + .reply_cmd = ETHTOOL_MSG_FEATURES_GET_REPLY, + .hdr_attr = ETHTOOL_A_FEATURES_HEADER, + .req_info_size = sizeof(struct features_req_info), + .reply_data_size = sizeof(struct features_reply_data), + + .prepare_data = features_prepare_data, + .reply_size = features_reply_size, + .fill_reply = features_fill_reply, +}; + +/* FEATURES_SET */ + +const struct nla_policy ethnl_features_set_policy[] = { + [ETHTOOL_A_FEATURES_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_FEATURES_WANTED] = { .type = NLA_NESTED }, +}; + +static void ethnl_features_to_bitmap(unsigned long *dest, netdev_features_t val) +{ + const unsigned int words = BITS_TO_LONGS(NETDEV_FEATURE_COUNT); + unsigned int i; + + bitmap_zero(dest, NETDEV_FEATURE_COUNT); + for (i = 0; i < words; i++) + dest[i] = (unsigned long)(val >> (i * BITS_PER_LONG)); +} + +static netdev_features_t ethnl_bitmap_to_features(unsigned long *src) +{ + const unsigned int nft_bits = sizeof(netdev_features_t) * BITS_PER_BYTE; + const unsigned int words = BITS_TO_LONGS(NETDEV_FEATURE_COUNT); + netdev_features_t ret = 0; + unsigned int i; + + for (i = 0; i < words; i++) + ret |= (netdev_features_t)(src[i]) << (i * BITS_PER_LONG); + ret &= ~(netdev_features_t)0 >> (nft_bits - NETDEV_FEATURE_COUNT); + return ret; +} + +static int features_send_reply(struct net_device *dev, struct genl_info *info, + const unsigned long *wanted, + const unsigned long *wanted_mask, + const unsigned long *active, + const unsigned long *active_mask, bool compact) +{ + struct sk_buff *rskb; + void *reply_payload; + int reply_len = 0; + int ret; + + reply_len = ethnl_reply_header_size(); + ret = ethnl_bitset_size(wanted, wanted_mask, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + goto err; + reply_len += ret; + ret = ethnl_bitset_size(active, active_mask, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + goto err; + reply_len += ret; + + ret = -ENOMEM; + rskb = ethnl_reply_init(reply_len, dev, ETHTOOL_MSG_FEATURES_SET_REPLY, + ETHTOOL_A_FEATURES_HEADER, info, + &reply_payload); + if (!rskb) + goto err; + + ret = ethnl_put_bitset(rskb, ETHTOOL_A_FEATURES_WANTED, wanted, + wanted_mask, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + goto nla_put_failure; + ret = ethnl_put_bitset(rskb, ETHTOOL_A_FEATURES_ACTIVE, active, + active_mask, NETDEV_FEATURE_COUNT, + netdev_features_strings, compact); + if (ret < 0) + goto nla_put_failure; + + genlmsg_end(rskb, reply_payload); + ret = genlmsg_reply(rskb, info); + return ret; + +nla_put_failure: + nlmsg_free(rskb); + WARN_ONCE(1, "calculated message payload length (%d) not sufficient\n", + reply_len); +err: + GENL_SET_ERR_MSG(info, "failed to send reply message"); + return ret; +} + +int ethnl_set_features(struct sk_buff *skb, struct genl_info *info) +{ + DECLARE_BITMAP(wanted_diff_mask, NETDEV_FEATURE_COUNT); + DECLARE_BITMAP(active_diff_mask, NETDEV_FEATURE_COUNT); + DECLARE_BITMAP(old_active, NETDEV_FEATURE_COUNT); + DECLARE_BITMAP(old_wanted, NETDEV_FEATURE_COUNT); + DECLARE_BITMAP(new_active, NETDEV_FEATURE_COUNT); + DECLARE_BITMAP(new_wanted, NETDEV_FEATURE_COUNT); + DECLARE_BITMAP(req_wanted, NETDEV_FEATURE_COUNT); + DECLARE_BITMAP(req_mask, NETDEV_FEATURE_COUNT); + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + struct net_device *dev; + bool mod; + int ret; + + if (!tb[ETHTOOL_A_FEATURES_WANTED]) + return -EINVAL; + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_FEATURES_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + ethnl_features_to_bitmap(old_active, dev->features); + ethnl_features_to_bitmap(old_wanted, dev->wanted_features); + ret = ethnl_parse_bitset(req_wanted, req_mask, NETDEV_FEATURE_COUNT, + tb[ETHTOOL_A_FEATURES_WANTED], + netdev_features_strings, info->extack); + if (ret < 0) + goto out_ops; + if (ethnl_bitmap_to_features(req_mask) & ~NETIF_F_ETHTOOL_BITS) { + GENL_SET_ERR_MSG(info, "attempt to change non-ethtool features"); + ret = -EINVAL; + goto out_ops; + } + + /* set req_wanted bits not in req_mask from old_wanted */ + bitmap_and(req_wanted, req_wanted, req_mask, NETDEV_FEATURE_COUNT); + bitmap_andnot(new_wanted, old_wanted, req_mask, NETDEV_FEATURE_COUNT); + bitmap_or(req_wanted, new_wanted, req_wanted, NETDEV_FEATURE_COUNT); + if (!bitmap_equal(req_wanted, old_wanted, NETDEV_FEATURE_COUNT)) { + dev->wanted_features &= ~dev->hw_features; + dev->wanted_features |= ethnl_bitmap_to_features(req_wanted) & dev->hw_features; + __netdev_update_features(dev); + } + ethnl_features_to_bitmap(new_active, dev->features); + mod = !bitmap_equal(old_active, new_active, NETDEV_FEATURE_COUNT); + + ret = 0; + if (!(req_info.flags & ETHTOOL_FLAG_OMIT_REPLY)) { + bool compact = req_info.flags & ETHTOOL_FLAG_COMPACT_BITSETS; + + bitmap_xor(wanted_diff_mask, req_wanted, new_active, + NETDEV_FEATURE_COUNT); + bitmap_xor(active_diff_mask, old_active, new_active, + NETDEV_FEATURE_COUNT); + bitmap_and(wanted_diff_mask, wanted_diff_mask, req_mask, + NETDEV_FEATURE_COUNT); + bitmap_and(req_wanted, req_wanted, wanted_diff_mask, + NETDEV_FEATURE_COUNT); + bitmap_and(new_active, new_active, active_diff_mask, + NETDEV_FEATURE_COUNT); + + ret = features_send_reply(dev, info, req_wanted, + wanted_diff_mask, new_active, + active_diff_mask, compact); + } + if (mod) + netdev_features_change(dev); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); + dev_put(dev); + return ret; +} diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c new file mode 100644 index 000000000..12bf740e2 --- /dev/null +++ b/net/ethtool/ioctl.c @@ -0,0 +1,3229 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * net/core/ethtool.c - Ethtool ioctl handler + * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> + * + * This file is where we call all the ethtool_ops commands to get + * the information ethtool needs. + */ + +#include <linux/compat.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/capability.h> +#include <linux/errno.h> +#include <linux/ethtool.h> +#include <linux/netdevice.h> +#include <linux/net_tstamp.h> +#include <linux/phy.h> +#include <linux/bitops.h> +#include <linux/uaccess.h> +#include <linux/vmalloc.h> +#include <linux/sfp.h> +#include <linux/slab.h> +#include <linux/rtnetlink.h> +#include <linux/sched/signal.h> +#include <linux/net.h> +#include <net/devlink.h> +#include <net/xdp_sock_drv.h> +#include <net/flow_offload.h> +#include <linux/ethtool_netlink.h> +#include <generated/utsrelease.h> +#include "common.h" + +/* + * Some useful ethtool_ops methods that're device independent. + * If we find that all drivers want to do the same thing here, + * we can turn these into dev_() function calls. + */ + +u32 ethtool_op_get_link(struct net_device *dev) +{ + return netif_carrier_ok(dev) ? 1 : 0; +} +EXPORT_SYMBOL(ethtool_op_get_link); + +int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) +{ + info->so_timestamping = + SOF_TIMESTAMPING_TX_SOFTWARE | + SOF_TIMESTAMPING_RX_SOFTWARE | + SOF_TIMESTAMPING_SOFTWARE; + info->phc_index = -1; + return 0; +} +EXPORT_SYMBOL(ethtool_op_get_ts_info); + +/* Handlers for each ethtool command */ + +static int ethtool_get_features(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_gfeatures cmd = { + .cmd = ETHTOOL_GFEATURES, + .size = ETHTOOL_DEV_FEATURE_WORDS, + }; + struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; + u32 __user *sizeaddr; + u32 copy_size; + int i; + + /* in case feature bits run out again */ + BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); + + for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { + features[i].available = (u32)(dev->hw_features >> (32 * i)); + features[i].requested = (u32)(dev->wanted_features >> (32 * i)); + features[i].active = (u32)(dev->features >> (32 * i)); + features[i].never_changed = + (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); + } + + sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); + if (get_user(copy_size, sizeaddr)) + return -EFAULT; + + if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) + copy_size = ETHTOOL_DEV_FEATURE_WORDS; + + if (copy_to_user(useraddr, &cmd, sizeof(cmd))) + return -EFAULT; + useraddr += sizeof(cmd); + if (copy_to_user(useraddr, features, copy_size * sizeof(*features))) + return -EFAULT; + + return 0; +} + +static int ethtool_set_features(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_sfeatures cmd; + struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; + netdev_features_t wanted = 0, valid = 0; + int i, ret = 0; + + if (copy_from_user(&cmd, useraddr, sizeof(cmd))) + return -EFAULT; + useraddr += sizeof(cmd); + + if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) + return -EINVAL; + + if (copy_from_user(features, useraddr, sizeof(features))) + return -EFAULT; + + for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { + valid |= (netdev_features_t)features[i].valid << (32 * i); + wanted |= (netdev_features_t)features[i].requested << (32 * i); + } + + if (valid & ~NETIF_F_ETHTOOL_BITS) + return -EINVAL; + + if (valid & ~dev->hw_features) { + valid &= dev->hw_features; + ret |= ETHTOOL_F_UNSUPPORTED; + } + + dev->wanted_features &= ~valid; + dev->wanted_features |= wanted & valid; + __netdev_update_features(dev); + + if ((dev->wanted_features ^ dev->features) & valid) + ret |= ETHTOOL_F_WISH; + + return ret; +} + +static int __ethtool_get_sset_count(struct net_device *dev, int sset) +{ + const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; + const struct ethtool_ops *ops = dev->ethtool_ops; + + if (sset == ETH_SS_FEATURES) + return ARRAY_SIZE(netdev_features_strings); + + if (sset == ETH_SS_RSS_HASH_FUNCS) + return ARRAY_SIZE(rss_hash_func_strings); + + if (sset == ETH_SS_TUNABLES) + return ARRAY_SIZE(tunable_strings); + + if (sset == ETH_SS_PHY_TUNABLES) + return ARRAY_SIZE(phy_tunable_strings); + + if (sset == ETH_SS_PHY_STATS && dev->phydev && + !ops->get_ethtool_phy_stats && + phy_ops && phy_ops->get_sset_count) + return phy_ops->get_sset_count(dev->phydev); + + if (sset == ETH_SS_LINK_MODES) + return __ETHTOOL_LINK_MODE_MASK_NBITS; + + if (ops->get_sset_count && ops->get_strings) + return ops->get_sset_count(dev, sset); + else + return -EOPNOTSUPP; +} + +static void __ethtool_get_strings(struct net_device *dev, + u32 stringset, u8 *data) +{ + const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; + const struct ethtool_ops *ops = dev->ethtool_ops; + + if (stringset == ETH_SS_FEATURES) + memcpy(data, netdev_features_strings, + sizeof(netdev_features_strings)); + else if (stringset == ETH_SS_RSS_HASH_FUNCS) + memcpy(data, rss_hash_func_strings, + sizeof(rss_hash_func_strings)); + else if (stringset == ETH_SS_TUNABLES) + memcpy(data, tunable_strings, sizeof(tunable_strings)); + else if (stringset == ETH_SS_PHY_TUNABLES) + memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); + else if (stringset == ETH_SS_PHY_STATS && dev->phydev && + !ops->get_ethtool_phy_stats && phy_ops && + phy_ops->get_strings) + phy_ops->get_strings(dev->phydev, data); + else if (stringset == ETH_SS_LINK_MODES) + memcpy(data, link_mode_names, + __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); + else + /* ops->get_strings is valid because checked earlier */ + ops->get_strings(dev, stringset, data); +} + +static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) +{ + /* feature masks of legacy discrete ethtool ops */ + + switch (eth_cmd) { + case ETHTOOL_GTXCSUM: + case ETHTOOL_STXCSUM: + return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | + NETIF_F_SCTP_CRC; + case ETHTOOL_GRXCSUM: + case ETHTOOL_SRXCSUM: + return NETIF_F_RXCSUM; + case ETHTOOL_GSG: + case ETHTOOL_SSG: + return NETIF_F_SG | NETIF_F_FRAGLIST; + case ETHTOOL_GTSO: + case ETHTOOL_STSO: + return NETIF_F_ALL_TSO; + case ETHTOOL_GGSO: + case ETHTOOL_SGSO: + return NETIF_F_GSO; + case ETHTOOL_GGRO: + case ETHTOOL_SGRO: + return NETIF_F_GRO; + default: + BUG(); + } +} + +static int ethtool_get_one_feature(struct net_device *dev, + char __user *useraddr, u32 ethcmd) +{ + netdev_features_t mask = ethtool_get_feature_mask(ethcmd); + struct ethtool_value edata = { + .cmd = ethcmd, + .data = !!(dev->features & mask), + }; + + if (copy_to_user(useraddr, &edata, sizeof(edata))) + return -EFAULT; + return 0; +} + +static int ethtool_set_one_feature(struct net_device *dev, + void __user *useraddr, u32 ethcmd) +{ + struct ethtool_value edata; + netdev_features_t mask; + + if (copy_from_user(&edata, useraddr, sizeof(edata))) + return -EFAULT; + + mask = ethtool_get_feature_mask(ethcmd); + mask &= dev->hw_features; + if (!mask) + return -EOPNOTSUPP; + + if (edata.data) + dev->wanted_features |= mask; + else + dev->wanted_features &= ~mask; + + __netdev_update_features(dev); + + return 0; +} + +#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ + ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) +#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ + NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ + NETIF_F_RXHASH) + +static u32 __ethtool_get_flags(struct net_device *dev) +{ + u32 flags = 0; + + if (dev->features & NETIF_F_LRO) + flags |= ETH_FLAG_LRO; + if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) + flags |= ETH_FLAG_RXVLAN; + if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) + flags |= ETH_FLAG_TXVLAN; + if (dev->features & NETIF_F_NTUPLE) + flags |= ETH_FLAG_NTUPLE; + if (dev->features & NETIF_F_RXHASH) + flags |= ETH_FLAG_RXHASH; + + return flags; +} + +static int __ethtool_set_flags(struct net_device *dev, u32 data) +{ + netdev_features_t features = 0, changed; + + if (data & ~ETH_ALL_FLAGS) + return -EINVAL; + + if (data & ETH_FLAG_LRO) + features |= NETIF_F_LRO; + if (data & ETH_FLAG_RXVLAN) + features |= NETIF_F_HW_VLAN_CTAG_RX; + if (data & ETH_FLAG_TXVLAN) + features |= NETIF_F_HW_VLAN_CTAG_TX; + if (data & ETH_FLAG_NTUPLE) + features |= NETIF_F_NTUPLE; + if (data & ETH_FLAG_RXHASH) + features |= NETIF_F_RXHASH; + + /* allow changing only bits set in hw_features */ + changed = (features ^ dev->features) & ETH_ALL_FEATURES; + if (changed & ~dev->hw_features) + return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; + + dev->wanted_features = + (dev->wanted_features & ~changed) | (features & changed); + + __netdev_update_features(dev); + + return 0; +} + +/* Given two link masks, AND them together and save the result in dst. */ +void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, + struct ethtool_link_ksettings *src) +{ + unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); + unsigned int idx = 0; + + for (; idx < size; idx++) { + dst->link_modes.supported[idx] &= + src->link_modes.supported[idx]; + dst->link_modes.advertising[idx] &= + src->link_modes.advertising[idx]; + } +} +EXPORT_SYMBOL(ethtool_intersect_link_masks); + +void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, + u32 legacy_u32) +{ + bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS); + dst[0] = legacy_u32; +} +EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); + +/* return false if src had higher bits set. lower bits always updated. */ +bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, + const unsigned long *src) +{ + bool retval = true; + + /* TODO: following test will soon always be true */ + if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { + __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); + + bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS); + bitmap_fill(ext, 32); + bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); + if (bitmap_intersects(ext, src, + __ETHTOOL_LINK_MODE_MASK_NBITS)) { + /* src mask goes beyond bit 31 */ + retval = false; + } + } + *legacy_u32 = src[0]; + return retval; +} +EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); + +/* return false if ksettings link modes had higher bits + * set. legacy_settings always updated (best effort) + */ +static bool +convert_link_ksettings_to_legacy_settings( + struct ethtool_cmd *legacy_settings, + const struct ethtool_link_ksettings *link_ksettings) +{ + bool retval = true; + + memset(legacy_settings, 0, sizeof(*legacy_settings)); + /* this also clears the deprecated fields in legacy structure: + * __u8 transceiver; + * __u32 maxtxpkt; + * __u32 maxrxpkt; + */ + + retval &= ethtool_convert_link_mode_to_legacy_u32( + &legacy_settings->supported, + link_ksettings->link_modes.supported); + retval &= ethtool_convert_link_mode_to_legacy_u32( + &legacy_settings->advertising, + link_ksettings->link_modes.advertising); + retval &= ethtool_convert_link_mode_to_legacy_u32( + &legacy_settings->lp_advertising, + link_ksettings->link_modes.lp_advertising); + ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); + legacy_settings->duplex + = link_ksettings->base.duplex; + legacy_settings->port + = link_ksettings->base.port; + legacy_settings->phy_address + = link_ksettings->base.phy_address; + legacy_settings->autoneg + = link_ksettings->base.autoneg; + legacy_settings->mdio_support + = link_ksettings->base.mdio_support; + legacy_settings->eth_tp_mdix + = link_ksettings->base.eth_tp_mdix; + legacy_settings->eth_tp_mdix_ctrl + = link_ksettings->base.eth_tp_mdix_ctrl; + legacy_settings->transceiver + = link_ksettings->base.transceiver; + return retval; +} + +/* number of 32-bit words to store the user's link mode bitmaps */ +#define __ETHTOOL_LINK_MODE_MASK_NU32 \ + DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) + +/* layout of the struct passed from/to userland */ +struct ethtool_link_usettings { + struct ethtool_link_settings base; + struct { + __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; + __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; + __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; + } link_modes; +}; + +/* Internal kernel helper to query a device ethtool_link_settings. */ +int __ethtool_get_link_ksettings(struct net_device *dev, + struct ethtool_link_ksettings *link_ksettings) +{ + ASSERT_RTNL(); + + if (!dev->ethtool_ops->get_link_ksettings) + return -EOPNOTSUPP; + + memset(link_ksettings, 0, sizeof(*link_ksettings)); + return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); +} +EXPORT_SYMBOL(__ethtool_get_link_ksettings); + +/* convert ethtool_link_usettings in user space to a kernel internal + * ethtool_link_ksettings. return 0 on success, errno on error. + */ +static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, + const void __user *from) +{ + struct ethtool_link_usettings link_usettings; + + if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) + return -EFAULT; + + memcpy(&to->base, &link_usettings.base, sizeof(to->base)); + bitmap_from_arr32(to->link_modes.supported, + link_usettings.link_modes.supported, + __ETHTOOL_LINK_MODE_MASK_NBITS); + bitmap_from_arr32(to->link_modes.advertising, + link_usettings.link_modes.advertising, + __ETHTOOL_LINK_MODE_MASK_NBITS); + bitmap_from_arr32(to->link_modes.lp_advertising, + link_usettings.link_modes.lp_advertising, + __ETHTOOL_LINK_MODE_MASK_NBITS); + + return 0; +} + +/* Check if the user is trying to change anything besides speed/duplex */ +bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) +{ + struct ethtool_link_settings base2 = {}; + + base2.speed = cmd->base.speed; + base2.port = PORT_OTHER; + base2.duplex = cmd->base.duplex; + base2.cmd = cmd->base.cmd; + base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; + + return !memcmp(&base2, &cmd->base, sizeof(base2)) && + bitmap_empty(cmd->link_modes.supported, + __ETHTOOL_LINK_MODE_MASK_NBITS) && + bitmap_empty(cmd->link_modes.lp_advertising, + __ETHTOOL_LINK_MODE_MASK_NBITS); +} + +/* convert a kernel internal ethtool_link_ksettings to + * ethtool_link_usettings in user space. return 0 on success, errno on + * error. + */ +static int +store_link_ksettings_for_user(void __user *to, + const struct ethtool_link_ksettings *from) +{ + struct ethtool_link_usettings link_usettings; + + memcpy(&link_usettings, from, sizeof(link_usettings)); + bitmap_to_arr32(link_usettings.link_modes.supported, + from->link_modes.supported, + __ETHTOOL_LINK_MODE_MASK_NBITS); + bitmap_to_arr32(link_usettings.link_modes.advertising, + from->link_modes.advertising, + __ETHTOOL_LINK_MODE_MASK_NBITS); + bitmap_to_arr32(link_usettings.link_modes.lp_advertising, + from->link_modes.lp_advertising, + __ETHTOOL_LINK_MODE_MASK_NBITS); + + if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) + return -EFAULT; + + return 0; +} + +/* Query device for its ethtool_link_settings. */ +static int ethtool_get_link_ksettings(struct net_device *dev, + void __user *useraddr) +{ + int err = 0; + struct ethtool_link_ksettings link_ksettings; + + ASSERT_RTNL(); + if (!dev->ethtool_ops->get_link_ksettings) + return -EOPNOTSUPP; + + /* handle bitmap nbits handshake */ + if (copy_from_user(&link_ksettings.base, useraddr, + sizeof(link_ksettings.base))) + return -EFAULT; + + if (__ETHTOOL_LINK_MODE_MASK_NU32 + != link_ksettings.base.link_mode_masks_nwords) { + /* wrong link mode nbits requested */ + memset(&link_ksettings, 0, sizeof(link_ksettings)); + link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; + /* send back number of words required as negative val */ + compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, + "need too many bits for link modes!"); + link_ksettings.base.link_mode_masks_nwords + = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); + + /* copy the base fields back to user, not the link + * mode bitmaps + */ + if (copy_to_user(useraddr, &link_ksettings.base, + sizeof(link_ksettings.base))) + return -EFAULT; + + return 0; + } + + /* handshake successful: user/kernel agree on + * link_mode_masks_nwords + */ + + memset(&link_ksettings, 0, sizeof(link_ksettings)); + err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); + if (err < 0) + return err; + + /* make sure we tell the right values to user */ + link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; + link_ksettings.base.link_mode_masks_nwords + = __ETHTOOL_LINK_MODE_MASK_NU32; + link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; + link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; + + return store_link_ksettings_for_user(useraddr, &link_ksettings); +} + +/* Update device ethtool_link_settings. */ +static int ethtool_set_link_ksettings(struct net_device *dev, + void __user *useraddr) +{ + int err; + struct ethtool_link_ksettings link_ksettings; + + ASSERT_RTNL(); + + if (!dev->ethtool_ops->set_link_ksettings) + return -EOPNOTSUPP; + + /* make sure nbits field has expected value */ + if (copy_from_user(&link_ksettings.base, useraddr, + sizeof(link_ksettings.base))) + return -EFAULT; + + if (__ETHTOOL_LINK_MODE_MASK_NU32 + != link_ksettings.base.link_mode_masks_nwords) + return -EINVAL; + + /* copy the whole structure, now that we know it has expected + * format + */ + err = load_link_ksettings_from_user(&link_ksettings, useraddr); + if (err) + return err; + + /* re-check nwords field, just in case */ + if (__ETHTOOL_LINK_MODE_MASK_NU32 + != link_ksettings.base.link_mode_masks_nwords) + return -EINVAL; + + if (link_ksettings.base.master_slave_cfg || + link_ksettings.base.master_slave_state) + return -EINVAL; + + err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); + if (err >= 0) { + ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); + ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); + } + return err; +} + +int ethtool_virtdev_set_link_ksettings(struct net_device *dev, + const struct ethtool_link_ksettings *cmd, + u32 *dev_speed, u8 *dev_duplex) +{ + u32 speed; + u8 duplex; + + speed = cmd->base.speed; + duplex = cmd->base.duplex; + /* don't allow custom speed and duplex */ + if (!ethtool_validate_speed(speed) || + !ethtool_validate_duplex(duplex) || + !ethtool_virtdev_validate_cmd(cmd)) + return -EINVAL; + *dev_speed = speed; + *dev_duplex = duplex; + + return 0; +} +EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); + +/* Query device for its ethtool_cmd settings. + * + * Backward compatibility note: for compatibility with legacy ethtool, this is + * now implemented via get_link_ksettings. When driver reports higher link mode + * bits, a kernel warning is logged once (with name of 1st driver/device) to + * recommend user to upgrade ethtool, but the command is successful (only the + * lower link mode bits reported back to user). Deprecated fields from + * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. + */ +static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_link_ksettings link_ksettings; + struct ethtool_cmd cmd; + int err; + + ASSERT_RTNL(); + if (!dev->ethtool_ops->get_link_ksettings) + return -EOPNOTSUPP; + + memset(&link_ksettings, 0, sizeof(link_ksettings)); + err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); + if (err < 0) + return err; + convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); + + /* send a sensible cmd tag back to user */ + cmd.cmd = ETHTOOL_GSET; + + if (copy_to_user(useraddr, &cmd, sizeof(cmd))) + return -EFAULT; + + return 0; +} + +/* Update device link settings with given ethtool_cmd. + * + * Backward compatibility note: for compatibility with legacy ethtool, this is + * now always implemented via set_link_settings. When user's request updates + * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel + * warning is logged once (with name of 1st driver/device) to recommend user to + * upgrade ethtool, and the request is rejected. + */ +static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_link_ksettings link_ksettings; + struct ethtool_cmd cmd; + int ret; + + ASSERT_RTNL(); + + if (copy_from_user(&cmd, useraddr, sizeof(cmd))) + return -EFAULT; + if (!dev->ethtool_ops->set_link_ksettings) + return -EOPNOTSUPP; + + if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) + return -EINVAL; + link_ksettings.base.link_mode_masks_nwords = + __ETHTOOL_LINK_MODE_MASK_NU32; + ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); + if (ret >= 0) { + ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); + ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); + } + return ret; +} + +static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, + void __user *useraddr) +{ + struct ethtool_drvinfo info; + const struct ethtool_ops *ops = dev->ethtool_ops; + + memset(&info, 0, sizeof(info)); + info.cmd = ETHTOOL_GDRVINFO; + strlcpy(info.version, UTS_RELEASE, sizeof(info.version)); + if (ops->get_drvinfo) { + ops->get_drvinfo(dev, &info); + } else if (dev->dev.parent && dev->dev.parent->driver) { + strlcpy(info.bus_info, dev_name(dev->dev.parent), + sizeof(info.bus_info)); + strlcpy(info.driver, dev->dev.parent->driver->name, + sizeof(info.driver)); + } else { + return -EOPNOTSUPP; + } + + /* + * this method of obtaining string set info is deprecated; + * Use ETHTOOL_GSSET_INFO instead. + */ + if (ops->get_sset_count) { + int rc; + + rc = ops->get_sset_count(dev, ETH_SS_TEST); + if (rc >= 0) + info.testinfo_len = rc; + rc = ops->get_sset_count(dev, ETH_SS_STATS); + if (rc >= 0) + info.n_stats = rc; + rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); + if (rc >= 0) + info.n_priv_flags = rc; + } + if (ops->get_regs_len) { + int ret = ops->get_regs_len(dev); + + if (ret > 0) + info.regdump_len = ret; + } + + if (ops->get_eeprom_len) + info.eedump_len = ops->get_eeprom_len(dev); + + if (!info.fw_version[0]) + devlink_compat_running_version(dev, info.fw_version, + sizeof(info.fw_version)); + + if (copy_to_user(useraddr, &info, sizeof(info))) + return -EFAULT; + return 0; +} + +static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, + void __user *useraddr) +{ + struct ethtool_sset_info info; + u64 sset_mask; + int i, idx = 0, n_bits = 0, ret, rc; + u32 *info_buf = NULL; + + if (copy_from_user(&info, useraddr, sizeof(info))) + return -EFAULT; + + /* store copy of mask, because we zero struct later on */ + sset_mask = info.sset_mask; + if (!sset_mask) + return 0; + + /* calculate size of return buffer */ + n_bits = hweight64(sset_mask); + + memset(&info, 0, sizeof(info)); + info.cmd = ETHTOOL_GSSET_INFO; + + info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); + if (!info_buf) + return -ENOMEM; + + /* + * fill return buffer based on input bitmask and successful + * get_sset_count return + */ + for (i = 0; i < 64; i++) { + if (!(sset_mask & (1ULL << i))) + continue; + + rc = __ethtool_get_sset_count(dev, i); + if (rc >= 0) { + info.sset_mask |= (1ULL << i); + info_buf[idx++] = rc; + } + } + + ret = -EFAULT; + if (copy_to_user(useraddr, &info, sizeof(info))) + goto out; + + useraddr += offsetof(struct ethtool_sset_info, data); + if (copy_to_user(useraddr, info_buf, idx * sizeof(u32))) + goto out; + + ret = 0; + +out: + kfree(info_buf); + return ret; +} + +static noinline_for_stack int +ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, + const struct compat_ethtool_rxnfc __user *useraddr, + size_t size) +{ + struct compat_ethtool_rxnfc crxnfc = {}; + + /* We expect there to be holes between fs.m_ext and + * fs.ring_cookie and at the end of fs, but nowhere else. + * On non-x86, no conversion should be needed. + */ + BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && + sizeof(struct compat_ethtool_rxnfc) != + sizeof(struct ethtool_rxnfc)); + BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + + sizeof(useraddr->fs.m_ext) != + offsetof(struct ethtool_rxnfc, fs.m_ext) + + sizeof(rxnfc->fs.m_ext)); + BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - + offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != + offsetof(struct ethtool_rxnfc, fs.location) - + offsetof(struct ethtool_rxnfc, fs.ring_cookie)); + + if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) + return -EFAULT; + + *rxnfc = (struct ethtool_rxnfc) { + .cmd = crxnfc.cmd, + .flow_type = crxnfc.flow_type, + .data = crxnfc.data, + .fs = { + .flow_type = crxnfc.fs.flow_type, + .h_u = crxnfc.fs.h_u, + .h_ext = crxnfc.fs.h_ext, + .m_u = crxnfc.fs.m_u, + .m_ext = crxnfc.fs.m_ext, + .ring_cookie = crxnfc.fs.ring_cookie, + .location = crxnfc.fs.location, + }, + .rule_cnt = crxnfc.rule_cnt, + }; + + return 0; +} + +static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, + const void __user *useraddr, + size_t size) +{ + if (compat_need_64bit_alignment_fixup()) + return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); + + if (copy_from_user(rxnfc, useraddr, size)) + return -EFAULT; + + return 0; +} + +static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, + const struct ethtool_rxnfc *rxnfc, + size_t size, const u32 *rule_buf) +{ + struct compat_ethtool_rxnfc crxnfc; + + memset(&crxnfc, 0, sizeof(crxnfc)); + crxnfc = (struct compat_ethtool_rxnfc) { + .cmd = rxnfc->cmd, + .flow_type = rxnfc->flow_type, + .data = rxnfc->data, + .fs = { + .flow_type = rxnfc->fs.flow_type, + .h_u = rxnfc->fs.h_u, + .h_ext = rxnfc->fs.h_ext, + .m_u = rxnfc->fs.m_u, + .m_ext = rxnfc->fs.m_ext, + .ring_cookie = rxnfc->fs.ring_cookie, + .location = rxnfc->fs.location, + }, + .rule_cnt = rxnfc->rule_cnt, + }; + + if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) + return -EFAULT; + + return 0; +} + +static int ethtool_rxnfc_copy_to_user(void __user *useraddr, + const struct ethtool_rxnfc *rxnfc, + size_t size, const u32 *rule_buf) +{ + int ret; + + if (compat_need_64bit_alignment_fixup()) { + ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, + rule_buf); + useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); + } else { + ret = copy_to_user(useraddr, rxnfc, size); + useraddr += offsetof(struct ethtool_rxnfc, rule_locs); + } + + if (ret) + return -EFAULT; + + if (rule_buf) { + if (copy_to_user(useraddr, rule_buf, + rxnfc->rule_cnt * sizeof(u32))) + return -EFAULT; + } + + return 0; +} + +static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, + u32 cmd, void __user *useraddr) +{ + struct ethtool_rxnfc info; + size_t info_size = sizeof(info); + int rc; + + if (!dev->ethtool_ops->set_rxnfc) + return -EOPNOTSUPP; + + /* struct ethtool_rxnfc was originally defined for + * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data + * members. User-space might still be using that + * definition. */ + if (cmd == ETHTOOL_SRXFH) + info_size = (offsetof(struct ethtool_rxnfc, data) + + sizeof(info.data)); + + if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) + return -EFAULT; + + rc = dev->ethtool_ops->set_rxnfc(dev, &info); + if (rc) + return rc; + + if (cmd == ETHTOOL_SRXCLSRLINS && + ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) + return -EFAULT; + + return 0; +} + +static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, + u32 cmd, void __user *useraddr) +{ + struct ethtool_rxnfc info; + size_t info_size = sizeof(info); + const struct ethtool_ops *ops = dev->ethtool_ops; + int ret; + void *rule_buf = NULL; + + if (!ops->get_rxnfc) + return -EOPNOTSUPP; + + /* struct ethtool_rxnfc was originally defined for + * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data + * members. User-space might still be using that + * definition. */ + if (cmd == ETHTOOL_GRXFH) + info_size = (offsetof(struct ethtool_rxnfc, data) + + sizeof(info.data)); + + if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) + return -EFAULT; + + /* If FLOW_RSS was requested then user-space must be using the + * new definition, as FLOW_RSS is newer. + */ + if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) { + info_size = sizeof(info); + if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size)) + return -EFAULT; + /* Since malicious users may modify the original data, + * we need to check whether FLOW_RSS is still requested. + */ + if (!(info.flow_type & FLOW_RSS)) + return -EINVAL; + } + + if (info.cmd != cmd) + return -EINVAL; + + if (info.cmd == ETHTOOL_GRXCLSRLALL) { + if (info.rule_cnt > 0) { + if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) + rule_buf = kcalloc(info.rule_cnt, sizeof(u32), + GFP_USER); + if (!rule_buf) + return -ENOMEM; + } + } + + ret = ops->get_rxnfc(dev, &info, rule_buf); + if (ret < 0) + goto err_out; + + ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); +err_out: + kfree(rule_buf); + + return ret; +} + +static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, + struct ethtool_rxnfc *rx_rings, + u32 size) +{ + int i; + + if (copy_from_user(indir, useraddr, size * sizeof(indir[0]))) + return -EFAULT; + + /* Validate ring indices */ + for (i = 0; i < size; i++) + if (indir[i] >= rx_rings->data) + return -EINVAL; + + return 0; +} + +u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; + +void netdev_rss_key_fill(void *buffer, size_t len) +{ + BUG_ON(len > sizeof(netdev_rss_key)); + net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); + memcpy(buffer, netdev_rss_key, len); +} +EXPORT_SYMBOL(netdev_rss_key_fill); + +static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, + void __user *useraddr) +{ + u32 user_size, dev_size; + u32 *indir; + int ret; + + if (!dev->ethtool_ops->get_rxfh_indir_size || + !dev->ethtool_ops->get_rxfh) + return -EOPNOTSUPP; + dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); + if (dev_size == 0) + return -EOPNOTSUPP; + + if (copy_from_user(&user_size, + useraddr + offsetof(struct ethtool_rxfh_indir, size), + sizeof(user_size))) + return -EFAULT; + + if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), + &dev_size, sizeof(dev_size))) + return -EFAULT; + + /* If the user buffer size is 0, this is just a query for the + * device table size. Otherwise, if it's smaller than the + * device table size it's an error. + */ + if (user_size < dev_size) + return user_size == 0 ? 0 : -EINVAL; + + indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); + if (!indir) + return -ENOMEM; + + ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); + if (ret) + goto out; + + if (copy_to_user(useraddr + + offsetof(struct ethtool_rxfh_indir, ring_index[0]), + indir, dev_size * sizeof(indir[0]))) + ret = -EFAULT; + +out: + kfree(indir); + return ret; +} + +static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, + void __user *useraddr) +{ + struct ethtool_rxnfc rx_rings; + u32 user_size, dev_size, i; + u32 *indir; + const struct ethtool_ops *ops = dev->ethtool_ops; + int ret; + u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); + + if (!ops->get_rxfh_indir_size || !ops->set_rxfh || + !ops->get_rxnfc) + return -EOPNOTSUPP; + + dev_size = ops->get_rxfh_indir_size(dev); + if (dev_size == 0) + return -EOPNOTSUPP; + + if (copy_from_user(&user_size, + useraddr + offsetof(struct ethtool_rxfh_indir, size), + sizeof(user_size))) + return -EFAULT; + + if (user_size != 0 && user_size != dev_size) + return -EINVAL; + + indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); + if (!indir) + return -ENOMEM; + + rx_rings.cmd = ETHTOOL_GRXRINGS; + ret = ops->get_rxnfc(dev, &rx_rings, NULL); + if (ret) + goto out; + + if (user_size == 0) { + for (i = 0; i < dev_size; i++) + indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); + } else { + ret = ethtool_copy_validate_indir(indir, + useraddr + ringidx_offset, + &rx_rings, + dev_size); + if (ret) + goto out; + } + + ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); + if (ret) + goto out; + + /* indicate whether rxfh was set to default */ + if (user_size == 0) + dev->priv_flags &= ~IFF_RXFH_CONFIGURED; + else + dev->priv_flags |= IFF_RXFH_CONFIGURED; + +out: + kfree(indir); + return ret; +} + +static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, + void __user *useraddr) +{ + int ret; + const struct ethtool_ops *ops = dev->ethtool_ops; + u32 user_indir_size, user_key_size; + u32 dev_indir_size = 0, dev_key_size = 0; + struct ethtool_rxfh rxfh; + u32 total_size; + u32 indir_bytes; + u32 *indir = NULL; + u8 dev_hfunc = 0; + u8 *hkey = NULL; + u8 *rss_config; + + if (!ops->get_rxfh) + return -EOPNOTSUPP; + + if (ops->get_rxfh_indir_size) + dev_indir_size = ops->get_rxfh_indir_size(dev); + if (ops->get_rxfh_key_size) + dev_key_size = ops->get_rxfh_key_size(dev); + + if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) + return -EFAULT; + user_indir_size = rxfh.indir_size; + user_key_size = rxfh.key_size; + + /* Check that reserved fields are 0 for now */ + if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) + return -EINVAL; + /* Most drivers don't handle rss_context, check it's 0 as well */ + if (rxfh.rss_context && !ops->get_rxfh_context) + return -EOPNOTSUPP; + + rxfh.indir_size = dev_indir_size; + rxfh.key_size = dev_key_size; + if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) + return -EFAULT; + + if ((user_indir_size && (user_indir_size != dev_indir_size)) || + (user_key_size && (user_key_size != dev_key_size))) + return -EINVAL; + + indir_bytes = user_indir_size * sizeof(indir[0]); + total_size = indir_bytes + user_key_size; + rss_config = kzalloc(total_size, GFP_USER); + if (!rss_config) + return -ENOMEM; + + if (user_indir_size) + indir = (u32 *)rss_config; + + if (user_key_size) + hkey = rss_config + indir_bytes; + + if (rxfh.rss_context) + ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, + &dev_hfunc, + rxfh.rss_context); + else + ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); + if (ret) + goto out; + + if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), + &dev_hfunc, sizeof(rxfh.hfunc))) { + ret = -EFAULT; + } else if (copy_to_user(useraddr + + offsetof(struct ethtool_rxfh, rss_config[0]), + rss_config, total_size)) { + ret = -EFAULT; + } +out: + kfree(rss_config); + + return ret; +} + +static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, + void __user *useraddr) +{ + int ret; + const struct ethtool_ops *ops = dev->ethtool_ops; + struct ethtool_rxnfc rx_rings; + struct ethtool_rxfh rxfh; + u32 dev_indir_size = 0, dev_key_size = 0, i; + u32 *indir = NULL, indir_bytes = 0; + u8 *hkey = NULL; + u8 *rss_config; + u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); + bool delete = false; + + if (!ops->get_rxnfc || !ops->set_rxfh) + return -EOPNOTSUPP; + + if (ops->get_rxfh_indir_size) + dev_indir_size = ops->get_rxfh_indir_size(dev); + if (ops->get_rxfh_key_size) + dev_key_size = ops->get_rxfh_key_size(dev); + + if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) + return -EFAULT; + + /* Check that reserved fields are 0 for now */ + if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) + return -EINVAL; + /* Most drivers don't handle rss_context, check it's 0 as well */ + if (rxfh.rss_context && !ops->set_rxfh_context) + return -EOPNOTSUPP; + + /* If either indir, hash key or function is valid, proceed further. + * Must request at least one change: indir size, hash key or function. + */ + if ((rxfh.indir_size && + rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && + rxfh.indir_size != dev_indir_size) || + (rxfh.key_size && (rxfh.key_size != dev_key_size)) || + (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && + rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) + return -EINVAL; + + if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) + indir_bytes = dev_indir_size * sizeof(indir[0]); + + rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); + if (!rss_config) + return -ENOMEM; + + rx_rings.cmd = ETHTOOL_GRXRINGS; + ret = ops->get_rxnfc(dev, &rx_rings, NULL); + if (ret) + goto out; + + /* rxfh.indir_size == 0 means reset the indir table to default (master + * context) or delete the context (other RSS contexts). + * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. + */ + if (rxfh.indir_size && + rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { + indir = (u32 *)rss_config; + ret = ethtool_copy_validate_indir(indir, + useraddr + rss_cfg_offset, + &rx_rings, + rxfh.indir_size); + if (ret) + goto out; + } else if (rxfh.indir_size == 0) { + if (rxfh.rss_context == 0) { + indir = (u32 *)rss_config; + for (i = 0; i < dev_indir_size; i++) + indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); + } else { + delete = true; + } + } + + if (rxfh.key_size) { + hkey = rss_config + indir_bytes; + if (copy_from_user(hkey, + useraddr + rss_cfg_offset + indir_bytes, + rxfh.key_size)) { + ret = -EFAULT; + goto out; + } + } + + if (rxfh.rss_context) + ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, + &rxfh.rss_context, delete); + else + ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); + if (ret) + goto out; + + if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), + &rxfh.rss_context, sizeof(rxfh.rss_context))) + ret = -EFAULT; + + if (!rxfh.rss_context) { + /* indicate whether rxfh was set to default */ + if (rxfh.indir_size == 0) + dev->priv_flags &= ~IFF_RXFH_CONFIGURED; + else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) + dev->priv_flags |= IFF_RXFH_CONFIGURED; + } + +out: + kfree(rss_config); + return ret; +} + +static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_regs regs; + const struct ethtool_ops *ops = dev->ethtool_ops; + void *regbuf; + int reglen, ret; + + if (!ops->get_regs || !ops->get_regs_len) + return -EOPNOTSUPP; + + if (copy_from_user(®s, useraddr, sizeof(regs))) + return -EFAULT; + + reglen = ops->get_regs_len(dev); + if (reglen <= 0) + return reglen; + + if (regs.len > reglen) + regs.len = reglen; + + regbuf = vzalloc(reglen); + if (!regbuf) + return -ENOMEM; + + if (regs.len < reglen) + reglen = regs.len; + + ops->get_regs(dev, ®s, regbuf); + + ret = -EFAULT; + if (copy_to_user(useraddr, ®s, sizeof(regs))) + goto out; + useraddr += offsetof(struct ethtool_regs, data); + if (copy_to_user(useraddr, regbuf, reglen)) + goto out; + ret = 0; + + out: + vfree(regbuf); + return ret; +} + +static int ethtool_reset(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_value reset; + int ret; + + if (!dev->ethtool_ops->reset) + return -EOPNOTSUPP; + + if (copy_from_user(&reset, useraddr, sizeof(reset))) + return -EFAULT; + + ret = dev->ethtool_ops->reset(dev, &reset.data); + if (ret) + return ret; + + if (copy_to_user(useraddr, &reset, sizeof(reset))) + return -EFAULT; + return 0; +} + +static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_wolinfo wol; + + if (!dev->ethtool_ops->get_wol) + return -EOPNOTSUPP; + + memset(&wol, 0, sizeof(struct ethtool_wolinfo)); + wol.cmd = ETHTOOL_GWOL; + dev->ethtool_ops->get_wol(dev, &wol); + + if (copy_to_user(useraddr, &wol, sizeof(wol))) + return -EFAULT; + return 0; +} + +static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_wolinfo wol; + int ret; + + if (!dev->ethtool_ops->set_wol) + return -EOPNOTSUPP; + + if (copy_from_user(&wol, useraddr, sizeof(wol))) + return -EFAULT; + + ret = dev->ethtool_ops->set_wol(dev, &wol); + if (ret) + return ret; + + dev->wol_enabled = !!wol.wolopts; + ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); + + return 0; +} + +static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_eee edata; + int rc; + + if (!dev->ethtool_ops->get_eee) + return -EOPNOTSUPP; + + memset(&edata, 0, sizeof(struct ethtool_eee)); + edata.cmd = ETHTOOL_GEEE; + rc = dev->ethtool_ops->get_eee(dev, &edata); + + if (rc) + return rc; + + if (copy_to_user(useraddr, &edata, sizeof(edata))) + return -EFAULT; + + return 0; +} + +static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_eee edata; + int ret; + + if (!dev->ethtool_ops->set_eee) + return -EOPNOTSUPP; + + if (copy_from_user(&edata, useraddr, sizeof(edata))) + return -EFAULT; + + ret = dev->ethtool_ops->set_eee(dev, &edata); + if (!ret) + ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); + return ret; +} + +static int ethtool_nway_reset(struct net_device *dev) +{ + if (!dev->ethtool_ops->nway_reset) + return -EOPNOTSUPP; + + return dev->ethtool_ops->nway_reset(dev); +} + +static int ethtool_get_link(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; + int link = __ethtool_get_link(dev); + + if (link < 0) + return link; + + edata.data = link; + if (copy_to_user(useraddr, &edata, sizeof(edata))) + return -EFAULT; + return 0; +} + +static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, + int (*getter)(struct net_device *, + struct ethtool_eeprom *, u8 *), + u32 total_len) +{ + struct ethtool_eeprom eeprom; + void __user *userbuf = useraddr + sizeof(eeprom); + u32 bytes_remaining; + u8 *data; + int ret = 0; + + if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) + return -EFAULT; + + /* Check for wrap and zero */ + if (eeprom.offset + eeprom.len <= eeprom.offset) + return -EINVAL; + + /* Check for exceeding total eeprom len */ + if (eeprom.offset + eeprom.len > total_len) + return -EINVAL; + + data = kzalloc(PAGE_SIZE, GFP_USER); + if (!data) + return -ENOMEM; + + bytes_remaining = eeprom.len; + while (bytes_remaining > 0) { + eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); + + ret = getter(dev, &eeprom, data); + if (ret) + break; + if (copy_to_user(userbuf, data, eeprom.len)) { + ret = -EFAULT; + break; + } + userbuf += eeprom.len; + eeprom.offset += eeprom.len; + bytes_remaining -= eeprom.len; + } + + eeprom.len = userbuf - (useraddr + sizeof(eeprom)); + eeprom.offset -= eeprom.len; + if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) + ret = -EFAULT; + + kfree(data); + return ret; +} + +static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) +{ + const struct ethtool_ops *ops = dev->ethtool_ops; + + if (!ops->get_eeprom || !ops->get_eeprom_len || + !ops->get_eeprom_len(dev)) + return -EOPNOTSUPP; + + return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, + ops->get_eeprom_len(dev)); +} + +static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_eeprom eeprom; + const struct ethtool_ops *ops = dev->ethtool_ops; + void __user *userbuf = useraddr + sizeof(eeprom); + u32 bytes_remaining; + u8 *data; + int ret = 0; + + if (!ops->set_eeprom || !ops->get_eeprom_len || + !ops->get_eeprom_len(dev)) + return -EOPNOTSUPP; + + if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) + return -EFAULT; + + /* Check for wrap and zero */ + if (eeprom.offset + eeprom.len <= eeprom.offset) + return -EINVAL; + + /* Check for exceeding total eeprom len */ + if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) + return -EINVAL; + + data = kzalloc(PAGE_SIZE, GFP_USER); + if (!data) + return -ENOMEM; + + bytes_remaining = eeprom.len; + while (bytes_remaining > 0) { + eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); + + if (copy_from_user(data, userbuf, eeprom.len)) { + ret = -EFAULT; + break; + } + ret = ops->set_eeprom(dev, &eeprom, data); + if (ret) + break; + userbuf += eeprom.len; + eeprom.offset += eeprom.len; + bytes_remaining -= eeprom.len; + } + + kfree(data); + return ret; +} + +static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, + void __user *useraddr) +{ + struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; + int ret; + + if (!dev->ethtool_ops->get_coalesce) + return -EOPNOTSUPP; + + ret = dev->ethtool_ops->get_coalesce(dev, &coalesce); + if (ret) + return ret; + + if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) + return -EFAULT; + return 0; +} + +static bool +ethtool_set_coalesce_supported(struct net_device *dev, + struct ethtool_coalesce *coalesce) +{ + u32 supported_params = dev->ethtool_ops->supported_coalesce_params; + u32 nonzero_params = 0; + + if (coalesce->rx_coalesce_usecs) + nonzero_params |= ETHTOOL_COALESCE_RX_USECS; + if (coalesce->rx_max_coalesced_frames) + nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; + if (coalesce->rx_coalesce_usecs_irq) + nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; + if (coalesce->rx_max_coalesced_frames_irq) + nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; + if (coalesce->tx_coalesce_usecs) + nonzero_params |= ETHTOOL_COALESCE_TX_USECS; + if (coalesce->tx_max_coalesced_frames) + nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; + if (coalesce->tx_coalesce_usecs_irq) + nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; + if (coalesce->tx_max_coalesced_frames_irq) + nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; + if (coalesce->stats_block_coalesce_usecs) + nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; + if (coalesce->use_adaptive_rx_coalesce) + nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; + if (coalesce->use_adaptive_tx_coalesce) + nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; + if (coalesce->pkt_rate_low) + nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; + if (coalesce->rx_coalesce_usecs_low) + nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; + if (coalesce->rx_max_coalesced_frames_low) + nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; + if (coalesce->tx_coalesce_usecs_low) + nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; + if (coalesce->tx_max_coalesced_frames_low) + nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; + if (coalesce->pkt_rate_high) + nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; + if (coalesce->rx_coalesce_usecs_high) + nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; + if (coalesce->rx_max_coalesced_frames_high) + nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; + if (coalesce->tx_coalesce_usecs_high) + nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; + if (coalesce->tx_max_coalesced_frames_high) + nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; + if (coalesce->rate_sample_interval) + nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; + + return (supported_params & nonzero_params) == nonzero_params; +} + +static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, + void __user *useraddr) +{ + struct ethtool_coalesce coalesce; + int ret; + + if (!dev->ethtool_ops->set_coalesce) + return -EOPNOTSUPP; + + if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) + return -EFAULT; + + if (!ethtool_set_coalesce_supported(dev, &coalesce)) + return -EOPNOTSUPP; + + ret = dev->ethtool_ops->set_coalesce(dev, &coalesce); + if (!ret) + ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); + return ret; +} + +static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; + + if (!dev->ethtool_ops->get_ringparam) + return -EOPNOTSUPP; + + dev->ethtool_ops->get_ringparam(dev, &ringparam); + + if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) + return -EFAULT; + return 0; +} + +static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; + int ret; + + if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) + return -EOPNOTSUPP; + + if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) + return -EFAULT; + + dev->ethtool_ops->get_ringparam(dev, &max); + + /* ensure new ring parameters are within the maximums */ + if (ringparam.rx_pending > max.rx_max_pending || + ringparam.rx_mini_pending > max.rx_mini_max_pending || + ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || + ringparam.tx_pending > max.tx_max_pending) + return -EINVAL; + + ret = dev->ethtool_ops->set_ringparam(dev, &ringparam); + if (!ret) + ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); + return ret; +} + +static noinline_for_stack int ethtool_get_channels(struct net_device *dev, + void __user *useraddr) +{ + struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; + + if (!dev->ethtool_ops->get_channels) + return -EOPNOTSUPP; + + dev->ethtool_ops->get_channels(dev, &channels); + + if (copy_to_user(useraddr, &channels, sizeof(channels))) + return -EFAULT; + return 0; +} + +static noinline_for_stack int ethtool_set_channels(struct net_device *dev, + void __user *useraddr) +{ + struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; + u16 from_channel, to_channel; + u32 max_rx_in_use = 0; + unsigned int i; + int ret; + + if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) + return -EOPNOTSUPP; + + if (copy_from_user(&channels, useraddr, sizeof(channels))) + return -EFAULT; + + dev->ethtool_ops->get_channels(dev, &curr); + + if (channels.rx_count == curr.rx_count && + channels.tx_count == curr.tx_count && + channels.combined_count == curr.combined_count && + channels.other_count == curr.other_count) + return 0; + + /* ensure new counts are within the maximums */ + if (channels.rx_count > curr.max_rx || + channels.tx_count > curr.max_tx || + channels.combined_count > curr.max_combined || + channels.other_count > curr.max_other) + return -EINVAL; + + /* ensure there is at least one RX and one TX channel */ + if (!channels.combined_count && + (!channels.rx_count || !channels.tx_count)) + return -EINVAL; + + /* ensure the new Rx count fits within the configured Rx flow + * indirection table settings */ + if (netif_is_rxfh_configured(dev) && + !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) && + (channels.combined_count + channels.rx_count) <= max_rx_in_use) + return -EINVAL; + + /* Disabling channels, query zero-copy AF_XDP sockets */ + from_channel = channels.combined_count + + min(channels.rx_count, channels.tx_count); + to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); + for (i = from_channel; i < to_channel; i++) + if (xsk_get_pool_from_qid(dev, i)) + return -EINVAL; + + ret = dev->ethtool_ops->set_channels(dev, &channels); + if (!ret) + ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); + return ret; +} + +static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; + + if (!dev->ethtool_ops->get_pauseparam) + return -EOPNOTSUPP; + + dev->ethtool_ops->get_pauseparam(dev, &pauseparam); + + if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) + return -EFAULT; + return 0; +} + +static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_pauseparam pauseparam; + int ret; + + if (!dev->ethtool_ops->set_pauseparam) + return -EOPNOTSUPP; + + if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) + return -EFAULT; + + ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); + if (!ret) + ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); + return ret; +} + +static int ethtool_self_test(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_test test; + const struct ethtool_ops *ops = dev->ethtool_ops; + u64 *data; + int ret, test_len; + + if (!ops->self_test || !ops->get_sset_count) + return -EOPNOTSUPP; + + test_len = ops->get_sset_count(dev, ETH_SS_TEST); + if (test_len < 0) + return test_len; + WARN_ON(test_len == 0); + + if (copy_from_user(&test, useraddr, sizeof(test))) + return -EFAULT; + + test.len = test_len; + data = kcalloc(test_len, sizeof(u64), GFP_USER); + if (!data) + return -ENOMEM; + + netif_testing_on(dev); + ops->self_test(dev, &test, data); + netif_testing_off(dev); + + ret = -EFAULT; + if (copy_to_user(useraddr, &test, sizeof(test))) + goto out; + useraddr += sizeof(test); + if (copy_to_user(useraddr, data, test.len * sizeof(u64))) + goto out; + ret = 0; + + out: + kfree(data); + return ret; +} + +static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_gstrings gstrings; + u8 *data; + int ret; + + if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) + return -EFAULT; + + ret = __ethtool_get_sset_count(dev, gstrings.string_set); + if (ret < 0) + return ret; + if (ret > S32_MAX / ETH_GSTRING_LEN) + return -ENOMEM; + WARN_ON_ONCE(!ret); + + gstrings.len = ret; + + if (gstrings.len) { + data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); + if (!data) + return -ENOMEM; + + __ethtool_get_strings(dev, gstrings.string_set, data); + } else { + data = NULL; + } + + ret = -EFAULT; + if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) + goto out; + useraddr += sizeof(gstrings); + if (gstrings.len && + copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) + goto out; + ret = 0; + +out: + vfree(data); + return ret; +} + +static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_value id; + static bool busy; + const struct ethtool_ops *ops = dev->ethtool_ops; + int rc; + + if (!ops->set_phys_id) + return -EOPNOTSUPP; + + if (busy) + return -EBUSY; + + if (copy_from_user(&id, useraddr, sizeof(id))) + return -EFAULT; + + rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); + if (rc < 0) + return rc; + + /* Drop the RTNL lock while waiting, but prevent reentry or + * removal of the device. + */ + busy = true; + dev_hold(dev); + rtnl_unlock(); + + if (rc == 0) { + /* Driver will handle this itself */ + schedule_timeout_interruptible( + id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); + } else { + /* Driver expects to be called at twice the frequency in rc */ + int n = rc * 2, interval = HZ / n; + u64 count = mul_u32_u32(n, id.data); + u64 i = 0; + + do { + rtnl_lock(); + rc = ops->set_phys_id(dev, + (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); + rtnl_unlock(); + if (rc) + break; + schedule_timeout_interruptible(interval); + } while (!signal_pending(current) && (!id.data || i < count)); + } + + rtnl_lock(); + dev_put(dev); + busy = false; + + (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); + return rc; +} + +static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_stats stats; + const struct ethtool_ops *ops = dev->ethtool_ops; + u64 *data; + int ret, n_stats; + + if (!ops->get_ethtool_stats || !ops->get_sset_count) + return -EOPNOTSUPP; + + n_stats = ops->get_sset_count(dev, ETH_SS_STATS); + if (n_stats < 0) + return n_stats; + if (n_stats > S32_MAX / sizeof(u64)) + return -ENOMEM; + WARN_ON_ONCE(!n_stats); + if (copy_from_user(&stats, useraddr, sizeof(stats))) + return -EFAULT; + + stats.n_stats = n_stats; + + if (n_stats) { + data = vzalloc(array_size(n_stats, sizeof(u64))); + if (!data) + return -ENOMEM; + ops->get_ethtool_stats(dev, &stats, data); + } else { + data = NULL; + } + + ret = -EFAULT; + if (copy_to_user(useraddr, &stats, sizeof(stats))) + goto out; + useraddr += sizeof(stats); + if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) + goto out; + ret = 0; + + out: + vfree(data); + return ret; +} + +static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) +{ + const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; + const struct ethtool_ops *ops = dev->ethtool_ops; + struct phy_device *phydev = dev->phydev; + struct ethtool_stats stats; + u64 *data; + int ret, n_stats; + + if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count)) + return -EOPNOTSUPP; + + if (dev->phydev && !ops->get_ethtool_phy_stats && + phy_ops && phy_ops->get_sset_count) + n_stats = phy_ops->get_sset_count(dev->phydev); + else + n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); + if (n_stats < 0) + return n_stats; + if (n_stats > S32_MAX / sizeof(u64)) + return -ENOMEM; + if (WARN_ON_ONCE(!n_stats)) + return -EOPNOTSUPP; + + if (copy_from_user(&stats, useraddr, sizeof(stats))) + return -EFAULT; + + stats.n_stats = n_stats; + + if (n_stats) { + data = vzalloc(array_size(n_stats, sizeof(u64))); + if (!data) + return -ENOMEM; + + if (dev->phydev && !ops->get_ethtool_phy_stats && + phy_ops && phy_ops->get_stats) { + ret = phy_ops->get_stats(dev->phydev, &stats, data); + if (ret < 0) + goto out; + } else { + ops->get_ethtool_phy_stats(dev, &stats, data); + } + } else { + data = NULL; + } + + ret = -EFAULT; + if (copy_to_user(useraddr, &stats, sizeof(stats))) + goto out; + useraddr += sizeof(stats); + if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) + goto out; + ret = 0; + + out: + vfree(data); + return ret; +} + +static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_perm_addr epaddr; + + if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) + return -EFAULT; + + if (epaddr.size < dev->addr_len) + return -ETOOSMALL; + epaddr.size = dev->addr_len; + + if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) + return -EFAULT; + useraddr += sizeof(epaddr); + if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) + return -EFAULT; + return 0; +} + +static int ethtool_get_value(struct net_device *dev, char __user *useraddr, + u32 cmd, u32 (*actor)(struct net_device *)) +{ + struct ethtool_value edata = { .cmd = cmd }; + + if (!actor) + return -EOPNOTSUPP; + + edata.data = actor(dev); + + if (copy_to_user(useraddr, &edata, sizeof(edata))) + return -EFAULT; + return 0; +} + +static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, + void (*actor)(struct net_device *, u32)) +{ + struct ethtool_value edata; + + if (!actor) + return -EOPNOTSUPP; + + if (copy_from_user(&edata, useraddr, sizeof(edata))) + return -EFAULT; + + actor(dev, edata.data); + return 0; +} + +static int ethtool_set_value(struct net_device *dev, char __user *useraddr, + int (*actor)(struct net_device *, u32)) +{ + struct ethtool_value edata; + + if (!actor) + return -EOPNOTSUPP; + + if (copy_from_user(&edata, useraddr, sizeof(edata))) + return -EFAULT; + + return actor(dev, edata.data); +} + +static noinline_for_stack int ethtool_flash_device(struct net_device *dev, + char __user *useraddr) +{ + struct ethtool_flash efl; + + if (copy_from_user(&efl, useraddr, sizeof(efl))) + return -EFAULT; + efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; + + if (!dev->ethtool_ops->flash_device) + return devlink_compat_flash_update(dev, efl.data); + + return dev->ethtool_ops->flash_device(dev, &efl); +} + +static int ethtool_set_dump(struct net_device *dev, + void __user *useraddr) +{ + struct ethtool_dump dump; + + if (!dev->ethtool_ops->set_dump) + return -EOPNOTSUPP; + + if (copy_from_user(&dump, useraddr, sizeof(dump))) + return -EFAULT; + + return dev->ethtool_ops->set_dump(dev, &dump); +} + +static int ethtool_get_dump_flag(struct net_device *dev, + void __user *useraddr) +{ + int ret; + struct ethtool_dump dump; + const struct ethtool_ops *ops = dev->ethtool_ops; + + if (!ops->get_dump_flag) + return -EOPNOTSUPP; + + if (copy_from_user(&dump, useraddr, sizeof(dump))) + return -EFAULT; + + ret = ops->get_dump_flag(dev, &dump); + if (ret) + return ret; + + if (copy_to_user(useraddr, &dump, sizeof(dump))) + return -EFAULT; + return 0; +} + +static int ethtool_get_dump_data(struct net_device *dev, + void __user *useraddr) +{ + int ret; + __u32 len; + struct ethtool_dump dump, tmp; + const struct ethtool_ops *ops = dev->ethtool_ops; + void *data = NULL; + + if (!ops->get_dump_data || !ops->get_dump_flag) + return -EOPNOTSUPP; + + if (copy_from_user(&dump, useraddr, sizeof(dump))) + return -EFAULT; + + memset(&tmp, 0, sizeof(tmp)); + tmp.cmd = ETHTOOL_GET_DUMP_FLAG; + ret = ops->get_dump_flag(dev, &tmp); + if (ret) + return ret; + + len = min(tmp.len, dump.len); + if (!len) + return -EFAULT; + + /* Don't ever let the driver think there's more space available + * than it requested with .get_dump_flag(). + */ + dump.len = len; + + /* Always allocate enough space to hold the whole thing so that the + * driver does not need to check the length and bother with partial + * dumping. + */ + data = vzalloc(tmp.len); + if (!data) + return -ENOMEM; + ret = ops->get_dump_data(dev, &dump, data); + if (ret) + goto out; + + /* There are two sane possibilities: + * 1. The driver's .get_dump_data() does not touch dump.len. + * 2. Or it may set dump.len to how much it really writes, which + * should be tmp.len (or len if it can do a partial dump). + * In any case respond to userspace with the actual length of data + * it's receiving. + */ + WARN_ON(dump.len != len && dump.len != tmp.len); + dump.len = len; + + if (copy_to_user(useraddr, &dump, sizeof(dump))) { + ret = -EFAULT; + goto out; + } + useraddr += offsetof(struct ethtool_dump, data); + if (copy_to_user(useraddr, data, len)) + ret = -EFAULT; +out: + vfree(data); + return ret; +} + +static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_ts_info info; + int err; + + err = __ethtool_get_ts_info(dev, &info); + if (err) + return err; + + if (copy_to_user(useraddr, &info, sizeof(info))) + return -EFAULT; + + return 0; +} + +static int __ethtool_get_module_info(struct net_device *dev, + struct ethtool_modinfo *modinfo) +{ + const struct ethtool_ops *ops = dev->ethtool_ops; + struct phy_device *phydev = dev->phydev; + + if (dev->sfp_bus) + return sfp_get_module_info(dev->sfp_bus, modinfo); + + if (phydev && phydev->drv && phydev->drv->module_info) + return phydev->drv->module_info(phydev, modinfo); + + if (ops->get_module_info) + return ops->get_module_info(dev, modinfo); + + return -EOPNOTSUPP; +} + +static int ethtool_get_module_info(struct net_device *dev, + void __user *useraddr) +{ + int ret; + struct ethtool_modinfo modinfo; + + if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) + return -EFAULT; + + ret = __ethtool_get_module_info(dev, &modinfo); + if (ret) + return ret; + + if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) + return -EFAULT; + + return 0; +} + +static int __ethtool_get_module_eeprom(struct net_device *dev, + struct ethtool_eeprom *ee, u8 *data) +{ + const struct ethtool_ops *ops = dev->ethtool_ops; + struct phy_device *phydev = dev->phydev; + + if (dev->sfp_bus) + return sfp_get_module_eeprom(dev->sfp_bus, ee, data); + + if (phydev && phydev->drv && phydev->drv->module_eeprom) + return phydev->drv->module_eeprom(phydev, ee, data); + + if (ops->get_module_eeprom) + return ops->get_module_eeprom(dev, ee, data); + + return -EOPNOTSUPP; +} + +static int ethtool_get_module_eeprom(struct net_device *dev, + void __user *useraddr) +{ + int ret; + struct ethtool_modinfo modinfo; + + ret = __ethtool_get_module_info(dev, &modinfo); + if (ret) + return ret; + + return ethtool_get_any_eeprom(dev, useraddr, + __ethtool_get_module_eeprom, + modinfo.eeprom_len); +} + +static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) +{ + switch (tuna->id) { + case ETHTOOL_RX_COPYBREAK: + case ETHTOOL_TX_COPYBREAK: + if (tuna->len != sizeof(u32) || + tuna->type_id != ETHTOOL_TUNABLE_U32) + return -EINVAL; + break; + case ETHTOOL_PFC_PREVENTION_TOUT: + if (tuna->len != sizeof(u16) || + tuna->type_id != ETHTOOL_TUNABLE_U16) + return -EINVAL; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) +{ + int ret; + struct ethtool_tunable tuna; + const struct ethtool_ops *ops = dev->ethtool_ops; + void *data; + + if (!ops->get_tunable) + return -EOPNOTSUPP; + if (copy_from_user(&tuna, useraddr, sizeof(tuna))) + return -EFAULT; + ret = ethtool_tunable_valid(&tuna); + if (ret) + return ret; + data = kzalloc(tuna.len, GFP_USER); + if (!data) + return -ENOMEM; + ret = ops->get_tunable(dev, &tuna, data); + if (ret) + goto out; + useraddr += sizeof(tuna); + ret = -EFAULT; + if (copy_to_user(useraddr, data, tuna.len)) + goto out; + ret = 0; + +out: + kfree(data); + return ret; +} + +static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) +{ + int ret; + struct ethtool_tunable tuna; + const struct ethtool_ops *ops = dev->ethtool_ops; + void *data; + + if (!ops->set_tunable) + return -EOPNOTSUPP; + if (copy_from_user(&tuna, useraddr, sizeof(tuna))) + return -EFAULT; + ret = ethtool_tunable_valid(&tuna); + if (ret) + return ret; + useraddr += sizeof(tuna); + data = memdup_user(useraddr, tuna.len); + if (IS_ERR(data)) + return PTR_ERR(data); + ret = ops->set_tunable(dev, &tuna, data); + + kfree(data); + return ret; +} + +static noinline_for_stack int +ethtool_get_per_queue_coalesce(struct net_device *dev, + void __user *useraddr, + struct ethtool_per_queue_op *per_queue_opt) +{ + u32 bit; + int ret; + DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); + + if (!dev->ethtool_ops->get_per_queue_coalesce) + return -EOPNOTSUPP; + + useraddr += sizeof(*per_queue_opt); + + bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, + MAX_NUM_QUEUE); + + for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { + struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; + + ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); + if (ret != 0) + return ret; + if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) + return -EFAULT; + useraddr += sizeof(coalesce); + } + + return 0; +} + +static noinline_for_stack int +ethtool_set_per_queue_coalesce(struct net_device *dev, + void __user *useraddr, + struct ethtool_per_queue_op *per_queue_opt) +{ + u32 bit; + int i, ret = 0; + int n_queue; + struct ethtool_coalesce *backup = NULL, *tmp = NULL; + DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); + + if ((!dev->ethtool_ops->set_per_queue_coalesce) || + (!dev->ethtool_ops->get_per_queue_coalesce)) + return -EOPNOTSUPP; + + useraddr += sizeof(*per_queue_opt); + + bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); + n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); + tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); + if (!backup) + return -ENOMEM; + + for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { + struct ethtool_coalesce coalesce; + + ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); + if (ret != 0) + goto roll_back; + + tmp++; + + if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { + ret = -EFAULT; + goto roll_back; + } + + if (!ethtool_set_coalesce_supported(dev, &coalesce)) { + ret = -EOPNOTSUPP; + goto roll_back; + } + + ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); + if (ret != 0) + goto roll_back; + + useraddr += sizeof(coalesce); + } + +roll_back: + if (ret != 0) { + tmp = backup; + for_each_set_bit(i, queue_mask, bit) { + dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); + tmp++; + } + } + kfree(backup); + + return ret; +} + +static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, + void __user *useraddr, u32 sub_cmd) +{ + struct ethtool_per_queue_op per_queue_opt; + + if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) + return -EFAULT; + + if (per_queue_opt.sub_command != sub_cmd) + return -EINVAL; + + switch (per_queue_opt.sub_command) { + case ETHTOOL_GCOALESCE: + return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); + case ETHTOOL_SCOALESCE: + return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); + default: + return -EOPNOTSUPP; + }; +} + +static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) +{ + switch (tuna->id) { + case ETHTOOL_PHY_DOWNSHIFT: + case ETHTOOL_PHY_FAST_LINK_DOWN: + if (tuna->len != sizeof(u8) || + tuna->type_id != ETHTOOL_TUNABLE_U8) + return -EINVAL; + break; + case ETHTOOL_PHY_EDPD: + if (tuna->len != sizeof(u16) || + tuna->type_id != ETHTOOL_TUNABLE_U16) + return -EINVAL; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int get_phy_tunable(struct net_device *dev, void __user *useraddr) +{ + struct phy_device *phydev = dev->phydev; + struct ethtool_tunable tuna; + bool phy_drv_tunable; + void *data; + int ret; + + phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; + if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) + return -EOPNOTSUPP; + if (copy_from_user(&tuna, useraddr, sizeof(tuna))) + return -EFAULT; + ret = ethtool_phy_tunable_valid(&tuna); + if (ret) + return ret; + data = kzalloc(tuna.len, GFP_USER); + if (!data) + return -ENOMEM; + if (phy_drv_tunable) { + mutex_lock(&phydev->lock); + ret = phydev->drv->get_tunable(phydev, &tuna, data); + mutex_unlock(&phydev->lock); + } else { + ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); + } + if (ret) + goto out; + useraddr += sizeof(tuna); + ret = -EFAULT; + if (copy_to_user(useraddr, data, tuna.len)) + goto out; + ret = 0; + +out: + kfree(data); + return ret; +} + +static int set_phy_tunable(struct net_device *dev, void __user *useraddr) +{ + struct phy_device *phydev = dev->phydev; + struct ethtool_tunable tuna; + bool phy_drv_tunable; + void *data; + int ret; + + phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; + if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) + return -EOPNOTSUPP; + if (copy_from_user(&tuna, useraddr, sizeof(tuna))) + return -EFAULT; + ret = ethtool_phy_tunable_valid(&tuna); + if (ret) + return ret; + useraddr += sizeof(tuna); + data = memdup_user(useraddr, tuna.len); + if (IS_ERR(data)) + return PTR_ERR(data); + if (phy_drv_tunable) { + mutex_lock(&phydev->lock); + ret = phydev->drv->set_tunable(phydev, &tuna, data); + mutex_unlock(&phydev->lock); + } else { + ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); + } + + kfree(data); + return ret; +} + +static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; + int rc; + + if (!dev->ethtool_ops->get_fecparam) + return -EOPNOTSUPP; + + rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); + if (rc) + return rc; + + if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) + return -EFAULT; + return 0; +} + +static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) +{ + struct ethtool_fecparam fecparam; + + if (!dev->ethtool_ops->set_fecparam) + return -EOPNOTSUPP; + + if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) + return -EFAULT; + + return dev->ethtool_ops->set_fecparam(dev, &fecparam); +} + +/* The main entry point in this file. Called from net/core/dev_ioctl.c */ + +int dev_ethtool(struct net *net, struct ifreq *ifr) +{ + struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); + void __user *useraddr = ifr->ifr_data; + u32 ethcmd, sub_cmd; + int rc; + netdev_features_t old_features; + + if (!dev || !netif_device_present(dev)) + return -ENODEV; + + if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) + return -EFAULT; + + if (ethcmd == ETHTOOL_PERQUEUE) { + if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) + return -EFAULT; + } else { + sub_cmd = ethcmd; + } + /* Allow some commands to be done by anyone */ + switch (sub_cmd) { + case ETHTOOL_GSET: + case ETHTOOL_GDRVINFO: + case ETHTOOL_GMSGLVL: + case ETHTOOL_GLINK: + case ETHTOOL_GCOALESCE: + case ETHTOOL_GRINGPARAM: + case ETHTOOL_GPAUSEPARAM: + case ETHTOOL_GRXCSUM: + case ETHTOOL_GTXCSUM: + case ETHTOOL_GSG: + case ETHTOOL_GSSET_INFO: + case ETHTOOL_GSTRINGS: + case ETHTOOL_GSTATS: + case ETHTOOL_GPHYSTATS: + case ETHTOOL_GTSO: + case ETHTOOL_GPERMADDR: + case ETHTOOL_GUFO: + case ETHTOOL_GGSO: + case ETHTOOL_GGRO: + case ETHTOOL_GFLAGS: + case ETHTOOL_GPFLAGS: + case ETHTOOL_GRXFH: + case ETHTOOL_GRXRINGS: + case ETHTOOL_GRXCLSRLCNT: + case ETHTOOL_GRXCLSRULE: + case ETHTOOL_GRXCLSRLALL: + case ETHTOOL_GRXFHINDIR: + case ETHTOOL_GRSSH: + case ETHTOOL_GFEATURES: + case ETHTOOL_GCHANNELS: + case ETHTOOL_GET_TS_INFO: + case ETHTOOL_GEEE: + case ETHTOOL_GTUNABLE: + case ETHTOOL_PHY_GTUNABLE: + case ETHTOOL_GLINKSETTINGS: + case ETHTOOL_GFECPARAM: + break; + default: + if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) + return -EPERM; + } + + if (dev->ethtool_ops->begin) { + rc = dev->ethtool_ops->begin(dev); + if (rc < 0) + return rc; + } + old_features = dev->features; + + switch (ethcmd) { + case ETHTOOL_GSET: + rc = ethtool_get_settings(dev, useraddr); + break; + case ETHTOOL_SSET: + rc = ethtool_set_settings(dev, useraddr); + break; + case ETHTOOL_GDRVINFO: + rc = ethtool_get_drvinfo(dev, useraddr); + break; + case ETHTOOL_GREGS: + rc = ethtool_get_regs(dev, useraddr); + break; + case ETHTOOL_GWOL: + rc = ethtool_get_wol(dev, useraddr); + break; + case ETHTOOL_SWOL: + rc = ethtool_set_wol(dev, useraddr); + break; + case ETHTOOL_GMSGLVL: + rc = ethtool_get_value(dev, useraddr, ethcmd, + dev->ethtool_ops->get_msglevel); + break; + case ETHTOOL_SMSGLVL: + rc = ethtool_set_value_void(dev, useraddr, + dev->ethtool_ops->set_msglevel); + if (!rc) + ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); + break; + case ETHTOOL_GEEE: + rc = ethtool_get_eee(dev, useraddr); + break; + case ETHTOOL_SEEE: + rc = ethtool_set_eee(dev, useraddr); + break; + case ETHTOOL_NWAY_RST: + rc = ethtool_nway_reset(dev); + break; + case ETHTOOL_GLINK: + rc = ethtool_get_link(dev, useraddr); + break; + case ETHTOOL_GEEPROM: + rc = ethtool_get_eeprom(dev, useraddr); + break; + case ETHTOOL_SEEPROM: + rc = ethtool_set_eeprom(dev, useraddr); + break; + case ETHTOOL_GCOALESCE: + rc = ethtool_get_coalesce(dev, useraddr); + break; + case ETHTOOL_SCOALESCE: + rc = ethtool_set_coalesce(dev, useraddr); + break; + case ETHTOOL_GRINGPARAM: + rc = ethtool_get_ringparam(dev, useraddr); + break; + case ETHTOOL_SRINGPARAM: + rc = ethtool_set_ringparam(dev, useraddr); + break; + case ETHTOOL_GPAUSEPARAM: + rc = ethtool_get_pauseparam(dev, useraddr); + break; + case ETHTOOL_SPAUSEPARAM: + rc = ethtool_set_pauseparam(dev, useraddr); + break; + case ETHTOOL_TEST: + rc = ethtool_self_test(dev, useraddr); + break; + case ETHTOOL_GSTRINGS: + rc = ethtool_get_strings(dev, useraddr); + break; + case ETHTOOL_PHYS_ID: + rc = ethtool_phys_id(dev, useraddr); + break; + case ETHTOOL_GSTATS: + rc = ethtool_get_stats(dev, useraddr); + break; + case ETHTOOL_GPERMADDR: + rc = ethtool_get_perm_addr(dev, useraddr); + break; + case ETHTOOL_GFLAGS: + rc = ethtool_get_value(dev, useraddr, ethcmd, + __ethtool_get_flags); + break; + case ETHTOOL_SFLAGS: + rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); + break; + case ETHTOOL_GPFLAGS: + rc = ethtool_get_value(dev, useraddr, ethcmd, + dev->ethtool_ops->get_priv_flags); + if (!rc) + ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); + break; + case ETHTOOL_SPFLAGS: + rc = ethtool_set_value(dev, useraddr, + dev->ethtool_ops->set_priv_flags); + break; + case ETHTOOL_GRXFH: + case ETHTOOL_GRXRINGS: + case ETHTOOL_GRXCLSRLCNT: + case ETHTOOL_GRXCLSRULE: + case ETHTOOL_GRXCLSRLALL: + rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); + break; + case ETHTOOL_SRXFH: + case ETHTOOL_SRXCLSRLDEL: + case ETHTOOL_SRXCLSRLINS: + rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); + break; + case ETHTOOL_FLASHDEV: + rc = ethtool_flash_device(dev, useraddr); + break; + case ETHTOOL_RESET: + rc = ethtool_reset(dev, useraddr); + break; + case ETHTOOL_GSSET_INFO: + rc = ethtool_get_sset_info(dev, useraddr); + break; + case ETHTOOL_GRXFHINDIR: + rc = ethtool_get_rxfh_indir(dev, useraddr); + break; + case ETHTOOL_SRXFHINDIR: + rc = ethtool_set_rxfh_indir(dev, useraddr); + break; + case ETHTOOL_GRSSH: + rc = ethtool_get_rxfh(dev, useraddr); + break; + case ETHTOOL_SRSSH: + rc = ethtool_set_rxfh(dev, useraddr); + break; + case ETHTOOL_GFEATURES: + rc = ethtool_get_features(dev, useraddr); + break; + case ETHTOOL_SFEATURES: + rc = ethtool_set_features(dev, useraddr); + break; + case ETHTOOL_GTXCSUM: + case ETHTOOL_GRXCSUM: + case ETHTOOL_GSG: + case ETHTOOL_GTSO: + case ETHTOOL_GGSO: + case ETHTOOL_GGRO: + rc = ethtool_get_one_feature(dev, useraddr, ethcmd); + break; + case ETHTOOL_STXCSUM: + case ETHTOOL_SRXCSUM: + case ETHTOOL_SSG: + case ETHTOOL_STSO: + case ETHTOOL_SGSO: + case ETHTOOL_SGRO: + rc = ethtool_set_one_feature(dev, useraddr, ethcmd); + break; + case ETHTOOL_GCHANNELS: + rc = ethtool_get_channels(dev, useraddr); + break; + case ETHTOOL_SCHANNELS: + rc = ethtool_set_channels(dev, useraddr); + break; + case ETHTOOL_SET_DUMP: + rc = ethtool_set_dump(dev, useraddr); + break; + case ETHTOOL_GET_DUMP_FLAG: + rc = ethtool_get_dump_flag(dev, useraddr); + break; + case ETHTOOL_GET_DUMP_DATA: + rc = ethtool_get_dump_data(dev, useraddr); + break; + case ETHTOOL_GET_TS_INFO: + rc = ethtool_get_ts_info(dev, useraddr); + break; + case ETHTOOL_GMODULEINFO: + rc = ethtool_get_module_info(dev, useraddr); + break; + case ETHTOOL_GMODULEEEPROM: + rc = ethtool_get_module_eeprom(dev, useraddr); + break; + case ETHTOOL_GTUNABLE: + rc = ethtool_get_tunable(dev, useraddr); + break; + case ETHTOOL_STUNABLE: + rc = ethtool_set_tunable(dev, useraddr); + break; + case ETHTOOL_GPHYSTATS: + rc = ethtool_get_phy_stats(dev, useraddr); + break; + case ETHTOOL_PERQUEUE: + rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); + break; + case ETHTOOL_GLINKSETTINGS: + rc = ethtool_get_link_ksettings(dev, useraddr); + break; + case ETHTOOL_SLINKSETTINGS: + rc = ethtool_set_link_ksettings(dev, useraddr); + break; + case ETHTOOL_PHY_GTUNABLE: + rc = get_phy_tunable(dev, useraddr); + break; + case ETHTOOL_PHY_STUNABLE: + rc = set_phy_tunable(dev, useraddr); + break; + case ETHTOOL_GFECPARAM: + rc = ethtool_get_fecparam(dev, useraddr); + break; + case ETHTOOL_SFECPARAM: + rc = ethtool_set_fecparam(dev, useraddr); + break; + default: + rc = -EOPNOTSUPP; + } + + if (dev->ethtool_ops->complete) + dev->ethtool_ops->complete(dev); + + if (old_features != dev->features) + netdev_features_change(dev); + + return rc; +} + +struct ethtool_rx_flow_key { + struct flow_dissector_key_basic basic; + union { + struct flow_dissector_key_ipv4_addrs ipv4; + struct flow_dissector_key_ipv6_addrs ipv6; + }; + struct flow_dissector_key_ports tp; + struct flow_dissector_key_ip ip; + struct flow_dissector_key_vlan vlan; + struct flow_dissector_key_eth_addrs eth_addrs; +} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ + +struct ethtool_rx_flow_match { + struct flow_dissector dissector; + struct ethtool_rx_flow_key key; + struct ethtool_rx_flow_key mask; +}; + +struct ethtool_rx_flow_rule * +ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) +{ + const struct ethtool_rx_flow_spec *fs = input->fs; + static struct in6_addr zero_addr = {}; + struct ethtool_rx_flow_match *match; + struct ethtool_rx_flow_rule *flow; + struct flow_action_entry *act; + + flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + + sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); + if (!flow) + return ERR_PTR(-ENOMEM); + + /* ethtool_rx supports only one single action per rule. */ + flow->rule = flow_rule_alloc(1); + if (!flow->rule) { + kfree(flow); + return ERR_PTR(-ENOMEM); + } + + match = (struct ethtool_rx_flow_match *)flow->priv; + flow->rule->match.dissector = &match->dissector; + flow->rule->match.mask = &match->mask; + flow->rule->match.key = &match->key; + + match->mask.basic.n_proto = htons(0xffff); + + switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { + case ETHER_FLOW: { + const struct ethhdr *ether_spec, *ether_m_spec; + + ether_spec = &fs->h_u.ether_spec; + ether_m_spec = &fs->m_u.ether_spec; + + if (!is_zero_ether_addr(ether_m_spec->h_source)) { + ether_addr_copy(match->key.eth_addrs.src, + ether_spec->h_source); + ether_addr_copy(match->mask.eth_addrs.src, + ether_m_spec->h_source); + } + if (!is_zero_ether_addr(ether_m_spec->h_dest)) { + ether_addr_copy(match->key.eth_addrs.dst, + ether_spec->h_dest); + ether_addr_copy(match->mask.eth_addrs.dst, + ether_m_spec->h_dest); + } + if (ether_m_spec->h_proto) { + match->key.basic.n_proto = ether_spec->h_proto; + match->mask.basic.n_proto = ether_m_spec->h_proto; + } + } + break; + case TCP_V4_FLOW: + case UDP_V4_FLOW: { + const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; + + match->key.basic.n_proto = htons(ETH_P_IP); + + v4_spec = &fs->h_u.tcp_ip4_spec; + v4_m_spec = &fs->m_u.tcp_ip4_spec; + + if (v4_m_spec->ip4src) { + match->key.ipv4.src = v4_spec->ip4src; + match->mask.ipv4.src = v4_m_spec->ip4src; + } + if (v4_m_spec->ip4dst) { + match->key.ipv4.dst = v4_spec->ip4dst; + match->mask.ipv4.dst = v4_m_spec->ip4dst; + } + if (v4_m_spec->ip4src || + v4_m_spec->ip4dst) { + match->dissector.used_keys |= + BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS); + match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = + offsetof(struct ethtool_rx_flow_key, ipv4); + } + if (v4_m_spec->psrc) { + match->key.tp.src = v4_spec->psrc; + match->mask.tp.src = v4_m_spec->psrc; + } + if (v4_m_spec->pdst) { + match->key.tp.dst = v4_spec->pdst; + match->mask.tp.dst = v4_m_spec->pdst; + } + if (v4_m_spec->psrc || + v4_m_spec->pdst) { + match->dissector.used_keys |= + BIT(FLOW_DISSECTOR_KEY_PORTS); + match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = + offsetof(struct ethtool_rx_flow_key, tp); + } + if (v4_m_spec->tos) { + match->key.ip.tos = v4_spec->tos; + match->mask.ip.tos = v4_m_spec->tos; + match->dissector.used_keys |= + BIT(FLOW_DISSECTOR_KEY_IP); + match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = + offsetof(struct ethtool_rx_flow_key, ip); + } + } + break; + case TCP_V6_FLOW: + case UDP_V6_FLOW: { + const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; + + match->key.basic.n_proto = htons(ETH_P_IPV6); + + v6_spec = &fs->h_u.tcp_ip6_spec; + v6_m_spec = &fs->m_u.tcp_ip6_spec; + if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) { + memcpy(&match->key.ipv6.src, v6_spec->ip6src, + sizeof(match->key.ipv6.src)); + memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, + sizeof(match->mask.ipv6.src)); + } + if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { + memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, + sizeof(match->key.ipv6.dst)); + memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, + sizeof(match->mask.ipv6.dst)); + } + if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) || + memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) { + match->dissector.used_keys |= + BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS); + match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = + offsetof(struct ethtool_rx_flow_key, ipv6); + } + if (v6_m_spec->psrc) { + match->key.tp.src = v6_spec->psrc; + match->mask.tp.src = v6_m_spec->psrc; + } + if (v6_m_spec->pdst) { + match->key.tp.dst = v6_spec->pdst; + match->mask.tp.dst = v6_m_spec->pdst; + } + if (v6_m_spec->psrc || + v6_m_spec->pdst) { + match->dissector.used_keys |= + BIT(FLOW_DISSECTOR_KEY_PORTS); + match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = + offsetof(struct ethtool_rx_flow_key, tp); + } + if (v6_m_spec->tclass) { + match->key.ip.tos = v6_spec->tclass; + match->mask.ip.tos = v6_m_spec->tclass; + match->dissector.used_keys |= + BIT(FLOW_DISSECTOR_KEY_IP); + match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = + offsetof(struct ethtool_rx_flow_key, ip); + } + } + break; + default: + ethtool_rx_flow_rule_destroy(flow); + return ERR_PTR(-EINVAL); + } + + switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { + case TCP_V4_FLOW: + case TCP_V6_FLOW: + match->key.basic.ip_proto = IPPROTO_TCP; + match->mask.basic.ip_proto = 0xff; + break; + case UDP_V4_FLOW: + case UDP_V6_FLOW: + match->key.basic.ip_proto = IPPROTO_UDP; + match->mask.basic.ip_proto = 0xff; + break; + } + + match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC); + match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = + offsetof(struct ethtool_rx_flow_key, basic); + + if (fs->flow_type & FLOW_EXT) { + const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; + const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; + + if (ext_m_spec->vlan_etype) { + match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; + match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; + } + + if (ext_m_spec->vlan_tci) { + match->key.vlan.vlan_id = + ntohs(ext_h_spec->vlan_tci) & 0x0fff; + match->mask.vlan.vlan_id = + ntohs(ext_m_spec->vlan_tci) & 0x0fff; + + match->key.vlan.vlan_dei = + !!(ext_h_spec->vlan_tci & htons(0x1000)); + match->mask.vlan.vlan_dei = + !!(ext_m_spec->vlan_tci & htons(0x1000)); + + match->key.vlan.vlan_priority = + (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; + match->mask.vlan.vlan_priority = + (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; + } + + if (ext_m_spec->vlan_etype || + ext_m_spec->vlan_tci) { + match->dissector.used_keys |= + BIT(FLOW_DISSECTOR_KEY_VLAN); + match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = + offsetof(struct ethtool_rx_flow_key, vlan); + } + } + if (fs->flow_type & FLOW_MAC_EXT) { + const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; + const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; + + memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, + ETH_ALEN); + memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, + ETH_ALEN); + + match->dissector.used_keys |= + BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS); + match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = + offsetof(struct ethtool_rx_flow_key, eth_addrs); + } + + act = &flow->rule->action.entries[0]; + switch (fs->ring_cookie) { + case RX_CLS_FLOW_DISC: + act->id = FLOW_ACTION_DROP; + break; + case RX_CLS_FLOW_WAKE: + act->id = FLOW_ACTION_WAKE; + break; + default: + act->id = FLOW_ACTION_QUEUE; + if (fs->flow_type & FLOW_RSS) + act->queue.ctx = input->rss_ctx; + + act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); + act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); + break; + } + + return flow; +} +EXPORT_SYMBOL(ethtool_rx_flow_rule_create); + +void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) +{ + kfree(flow->rule); + kfree(flow); +} +EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); diff --git a/net/ethtool/linkinfo.c b/net/ethtool/linkinfo.c new file mode 100644 index 000000000..b91839870 --- /dev/null +++ b/net/ethtool/linkinfo.c @@ -0,0 +1,154 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" + +struct linkinfo_req_info { + struct ethnl_req_info base; +}; + +struct linkinfo_reply_data { + struct ethnl_reply_data base; + struct ethtool_link_ksettings ksettings; + struct ethtool_link_settings *lsettings; +}; + +#define LINKINFO_REPDATA(__reply_base) \ + container_of(__reply_base, struct linkinfo_reply_data, base) + +const struct nla_policy ethnl_linkinfo_get_policy[] = { + [ETHTOOL_A_LINKINFO_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int linkinfo_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + data->lsettings = &data->ksettings.base; + + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + ret = __ethtool_get_link_ksettings(dev, &data->ksettings); + if (ret < 0 && info) + GENL_SET_ERR_MSG(info, "failed to retrieve link settings"); + ethnl_ops_complete(dev); + + return ret; +} + +static int linkinfo_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + return nla_total_size(sizeof(u8)) /* LINKINFO_PORT */ + + nla_total_size(sizeof(u8)) /* LINKINFO_PHYADDR */ + + nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX */ + + nla_total_size(sizeof(u8)) /* LINKINFO_TP_MDIX_CTRL */ + + nla_total_size(sizeof(u8)) /* LINKINFO_TRANSCEIVER */ + + 0; +} + +static int linkinfo_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct linkinfo_reply_data *data = LINKINFO_REPDATA(reply_base); + + if (nla_put_u8(skb, ETHTOOL_A_LINKINFO_PORT, data->lsettings->port) || + nla_put_u8(skb, ETHTOOL_A_LINKINFO_PHYADDR, + data->lsettings->phy_address) || + nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX, + data->lsettings->eth_tp_mdix) || + nla_put_u8(skb, ETHTOOL_A_LINKINFO_TP_MDIX_CTRL, + data->lsettings->eth_tp_mdix_ctrl) || + nla_put_u8(skb, ETHTOOL_A_LINKINFO_TRANSCEIVER, + data->lsettings->transceiver)) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_linkinfo_request_ops = { + .request_cmd = ETHTOOL_MSG_LINKINFO_GET, + .reply_cmd = ETHTOOL_MSG_LINKINFO_GET_REPLY, + .hdr_attr = ETHTOOL_A_LINKINFO_HEADER, + .req_info_size = sizeof(struct linkinfo_req_info), + .reply_data_size = sizeof(struct linkinfo_reply_data), + + .prepare_data = linkinfo_prepare_data, + .reply_size = linkinfo_reply_size, + .fill_reply = linkinfo_fill_reply, +}; + +/* LINKINFO_SET */ + +const struct nla_policy ethnl_linkinfo_set_policy[] = { + [ETHTOOL_A_LINKINFO_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_LINKINFO_PORT] = { .type = NLA_U8 }, + [ETHTOOL_A_LINKINFO_PHYADDR] = { .type = NLA_U8 }, + [ETHTOOL_A_LINKINFO_TP_MDIX_CTRL] = { .type = NLA_U8 }, +}; + +int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info) +{ + struct ethtool_link_ksettings ksettings = {}; + struct ethtool_link_settings *lsettings; + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + struct net_device *dev; + bool mod = false; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_LINKINFO_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ret = -EOPNOTSUPP; + if (!dev->ethtool_ops->get_link_ksettings || + !dev->ethtool_ops->set_link_ksettings) + goto out_dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + + ret = __ethtool_get_link_ksettings(dev, &ksettings); + if (ret < 0) { + GENL_SET_ERR_MSG(info, "failed to retrieve link settings"); + goto out_ops; + } + lsettings = &ksettings.base; + + ethnl_update_u8(&lsettings->port, tb[ETHTOOL_A_LINKINFO_PORT], &mod); + ethnl_update_u8(&lsettings->phy_address, tb[ETHTOOL_A_LINKINFO_PHYADDR], + &mod); + ethnl_update_u8(&lsettings->eth_tp_mdix_ctrl, + tb[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL], &mod); + ret = 0; + if (!mod) + goto out_ops; + + ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings); + if (ret < 0) + GENL_SET_ERR_MSG(info, "link settings update failed"); + else + ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} diff --git a/net/ethtool/linkmodes.c b/net/ethtool/linkmodes.c new file mode 100644 index 000000000..c5bcb9abc --- /dev/null +++ b/net/ethtool/linkmodes.c @@ -0,0 +1,431 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" +#include "bitset.h" + +struct linkmodes_req_info { + struct ethnl_req_info base; +}; + +struct linkmodes_reply_data { + struct ethnl_reply_data base; + struct ethtool_link_ksettings ksettings; + struct ethtool_link_settings *lsettings; + bool peer_empty; +}; + +#define LINKMODES_REPDATA(__reply_base) \ + container_of(__reply_base, struct linkmodes_reply_data, base) + +const struct nla_policy ethnl_linkmodes_get_policy[] = { + [ETHTOOL_A_LINKMODES_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int linkmodes_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + data->lsettings = &data->ksettings.base; + + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + + ret = __ethtool_get_link_ksettings(dev, &data->ksettings); + if (ret < 0 && info) { + GENL_SET_ERR_MSG(info, "failed to retrieve link settings"); + goto out; + } + + data->peer_empty = + bitmap_empty(data->ksettings.link_modes.lp_advertising, + __ETHTOOL_LINK_MODE_MASK_NBITS); + +out: + ethnl_ops_complete(dev); + return ret; +} + +static int linkmodes_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base); + const struct ethtool_link_ksettings *ksettings = &data->ksettings; + const struct ethtool_link_settings *lsettings = &ksettings->base; + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + int len, ret; + + len = nla_total_size(sizeof(u8)) /* LINKMODES_AUTONEG */ + + nla_total_size(sizeof(u32)) /* LINKMODES_SPEED */ + + nla_total_size(sizeof(u8)) /* LINKMODES_DUPLEX */ + + 0; + ret = ethnl_bitset_size(ksettings->link_modes.advertising, + ksettings->link_modes.supported, + __ETHTOOL_LINK_MODE_MASK_NBITS, + link_mode_names, compact); + if (ret < 0) + return ret; + len += ret; + if (!data->peer_empty) { + ret = ethnl_bitset_size(ksettings->link_modes.lp_advertising, + NULL, __ETHTOOL_LINK_MODE_MASK_NBITS, + link_mode_names, compact); + if (ret < 0) + return ret; + len += ret; + } + + if (lsettings->master_slave_cfg != MASTER_SLAVE_CFG_UNSUPPORTED) + len += nla_total_size(sizeof(u8)); + + if (lsettings->master_slave_state != MASTER_SLAVE_STATE_UNSUPPORTED) + len += nla_total_size(sizeof(u8)); + + return len; +} + +static int linkmodes_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base); + const struct ethtool_link_ksettings *ksettings = &data->ksettings; + const struct ethtool_link_settings *lsettings = &ksettings->base; + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + int ret; + + if (nla_put_u8(skb, ETHTOOL_A_LINKMODES_AUTONEG, lsettings->autoneg)) + return -EMSGSIZE; + + ret = ethnl_put_bitset(skb, ETHTOOL_A_LINKMODES_OURS, + ksettings->link_modes.advertising, + ksettings->link_modes.supported, + __ETHTOOL_LINK_MODE_MASK_NBITS, link_mode_names, + compact); + if (ret < 0) + return -EMSGSIZE; + if (!data->peer_empty) { + ret = ethnl_put_bitset(skb, ETHTOOL_A_LINKMODES_PEER, + ksettings->link_modes.lp_advertising, + NULL, __ETHTOOL_LINK_MODE_MASK_NBITS, + link_mode_names, compact); + if (ret < 0) + return -EMSGSIZE; + } + + if (nla_put_u32(skb, ETHTOOL_A_LINKMODES_SPEED, lsettings->speed) || + nla_put_u8(skb, ETHTOOL_A_LINKMODES_DUPLEX, lsettings->duplex)) + return -EMSGSIZE; + + if (lsettings->master_slave_cfg != MASTER_SLAVE_CFG_UNSUPPORTED && + nla_put_u8(skb, ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG, + lsettings->master_slave_cfg)) + return -EMSGSIZE; + + if (lsettings->master_slave_state != MASTER_SLAVE_STATE_UNSUPPORTED && + nla_put_u8(skb, ETHTOOL_A_LINKMODES_MASTER_SLAVE_STATE, + lsettings->master_slave_state)) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_linkmodes_request_ops = { + .request_cmd = ETHTOOL_MSG_LINKMODES_GET, + .reply_cmd = ETHTOOL_MSG_LINKMODES_GET_REPLY, + .hdr_attr = ETHTOOL_A_LINKMODES_HEADER, + .req_info_size = sizeof(struct linkmodes_req_info), + .reply_data_size = sizeof(struct linkmodes_reply_data), + + .prepare_data = linkmodes_prepare_data, + .reply_size = linkmodes_reply_size, + .fill_reply = linkmodes_fill_reply, +}; + +/* LINKMODES_SET */ + +struct link_mode_info { + int speed; + u8 duplex; +}; + +#define __DEFINE_LINK_MODE_PARAMS(_speed, _type, _duplex) \ + [ETHTOOL_LINK_MODE(_speed, _type, _duplex)] = { \ + .speed = SPEED_ ## _speed, \ + .duplex = __DUPLEX_ ## _duplex \ + } +#define __DUPLEX_Half DUPLEX_HALF +#define __DUPLEX_Full DUPLEX_FULL +#define __DEFINE_SPECIAL_MODE_PARAMS(_mode) \ + [ETHTOOL_LINK_MODE_ ## _mode ## _BIT] = { \ + .speed = SPEED_UNKNOWN, \ + .duplex = DUPLEX_UNKNOWN, \ + } + +static const struct link_mode_info link_mode_params[] = { + __DEFINE_LINK_MODE_PARAMS(10, T, Half), + __DEFINE_LINK_MODE_PARAMS(10, T, Full), + __DEFINE_LINK_MODE_PARAMS(100, T, Half), + __DEFINE_LINK_MODE_PARAMS(100, T, Full), + __DEFINE_LINK_MODE_PARAMS(1000, T, Half), + __DEFINE_LINK_MODE_PARAMS(1000, T, Full), + __DEFINE_SPECIAL_MODE_PARAMS(Autoneg), + __DEFINE_SPECIAL_MODE_PARAMS(TP), + __DEFINE_SPECIAL_MODE_PARAMS(AUI), + __DEFINE_SPECIAL_MODE_PARAMS(MII), + __DEFINE_SPECIAL_MODE_PARAMS(FIBRE), + __DEFINE_SPECIAL_MODE_PARAMS(BNC), + __DEFINE_LINK_MODE_PARAMS(10000, T, Full), + __DEFINE_SPECIAL_MODE_PARAMS(Pause), + __DEFINE_SPECIAL_MODE_PARAMS(Asym_Pause), + __DEFINE_LINK_MODE_PARAMS(2500, X, Full), + __DEFINE_SPECIAL_MODE_PARAMS(Backplane), + __DEFINE_LINK_MODE_PARAMS(1000, KX, Full), + __DEFINE_LINK_MODE_PARAMS(10000, KX4, Full), + __DEFINE_LINK_MODE_PARAMS(10000, KR, Full), + [ETHTOOL_LINK_MODE_10000baseR_FEC_BIT] = { + .speed = SPEED_10000, + .duplex = DUPLEX_FULL, + }, + __DEFINE_LINK_MODE_PARAMS(20000, MLD2, Full), + __DEFINE_LINK_MODE_PARAMS(20000, KR2, Full), + __DEFINE_LINK_MODE_PARAMS(40000, KR4, Full), + __DEFINE_LINK_MODE_PARAMS(40000, CR4, Full), + __DEFINE_LINK_MODE_PARAMS(40000, SR4, Full), + __DEFINE_LINK_MODE_PARAMS(40000, LR4, Full), + __DEFINE_LINK_MODE_PARAMS(56000, KR4, Full), + __DEFINE_LINK_MODE_PARAMS(56000, CR4, Full), + __DEFINE_LINK_MODE_PARAMS(56000, SR4, Full), + __DEFINE_LINK_MODE_PARAMS(56000, LR4, Full), + __DEFINE_LINK_MODE_PARAMS(25000, CR, Full), + __DEFINE_LINK_MODE_PARAMS(25000, KR, Full), + __DEFINE_LINK_MODE_PARAMS(25000, SR, Full), + __DEFINE_LINK_MODE_PARAMS(50000, CR2, Full), + __DEFINE_LINK_MODE_PARAMS(50000, KR2, Full), + __DEFINE_LINK_MODE_PARAMS(100000, KR4, Full), + __DEFINE_LINK_MODE_PARAMS(100000, SR4, Full), + __DEFINE_LINK_MODE_PARAMS(100000, CR4, Full), + __DEFINE_LINK_MODE_PARAMS(100000, LR4_ER4, Full), + __DEFINE_LINK_MODE_PARAMS(50000, SR2, Full), + __DEFINE_LINK_MODE_PARAMS(1000, X, Full), + __DEFINE_LINK_MODE_PARAMS(10000, CR, Full), + __DEFINE_LINK_MODE_PARAMS(10000, SR, Full), + __DEFINE_LINK_MODE_PARAMS(10000, LR, Full), + __DEFINE_LINK_MODE_PARAMS(10000, LRM, Full), + __DEFINE_LINK_MODE_PARAMS(10000, ER, Full), + __DEFINE_LINK_MODE_PARAMS(2500, T, Full), + __DEFINE_LINK_MODE_PARAMS(5000, T, Full), + __DEFINE_SPECIAL_MODE_PARAMS(FEC_NONE), + __DEFINE_SPECIAL_MODE_PARAMS(FEC_RS), + __DEFINE_SPECIAL_MODE_PARAMS(FEC_BASER), + __DEFINE_LINK_MODE_PARAMS(50000, KR, Full), + __DEFINE_LINK_MODE_PARAMS(50000, SR, Full), + __DEFINE_LINK_MODE_PARAMS(50000, CR, Full), + __DEFINE_LINK_MODE_PARAMS(50000, LR_ER_FR, Full), + __DEFINE_LINK_MODE_PARAMS(50000, DR, Full), + __DEFINE_LINK_MODE_PARAMS(100000, KR2, Full), + __DEFINE_LINK_MODE_PARAMS(100000, SR2, Full), + __DEFINE_LINK_MODE_PARAMS(100000, CR2, Full), + __DEFINE_LINK_MODE_PARAMS(100000, LR2_ER2_FR2, Full), + __DEFINE_LINK_MODE_PARAMS(100000, DR2, Full), + __DEFINE_LINK_MODE_PARAMS(200000, KR4, Full), + __DEFINE_LINK_MODE_PARAMS(200000, SR4, Full), + __DEFINE_LINK_MODE_PARAMS(200000, LR4_ER4_FR4, Full), + __DEFINE_LINK_MODE_PARAMS(200000, DR4, Full), + __DEFINE_LINK_MODE_PARAMS(200000, CR4, Full), + __DEFINE_LINK_MODE_PARAMS(100, T1, Full), + __DEFINE_LINK_MODE_PARAMS(1000, T1, Full), + __DEFINE_LINK_MODE_PARAMS(400000, KR8, Full), + __DEFINE_LINK_MODE_PARAMS(400000, SR8, Full), + __DEFINE_LINK_MODE_PARAMS(400000, LR8_ER8_FR8, Full), + __DEFINE_LINK_MODE_PARAMS(400000, DR8, Full), + __DEFINE_LINK_MODE_PARAMS(400000, CR8, Full), + __DEFINE_SPECIAL_MODE_PARAMS(FEC_LLRS), + __DEFINE_LINK_MODE_PARAMS(100000, KR, Full), + __DEFINE_LINK_MODE_PARAMS(100000, SR, Full), + __DEFINE_LINK_MODE_PARAMS(100000, LR_ER_FR, Full), + __DEFINE_LINK_MODE_PARAMS(100000, DR, Full), + __DEFINE_LINK_MODE_PARAMS(100000, CR, Full), + __DEFINE_LINK_MODE_PARAMS(200000, KR2, Full), + __DEFINE_LINK_MODE_PARAMS(200000, SR2, Full), + __DEFINE_LINK_MODE_PARAMS(200000, LR2_ER2_FR2, Full), + __DEFINE_LINK_MODE_PARAMS(200000, DR2, Full), + __DEFINE_LINK_MODE_PARAMS(200000, CR2, Full), + __DEFINE_LINK_MODE_PARAMS(400000, KR4, Full), + __DEFINE_LINK_MODE_PARAMS(400000, SR4, Full), + __DEFINE_LINK_MODE_PARAMS(400000, LR4_ER4_FR4, Full), + __DEFINE_LINK_MODE_PARAMS(400000, DR4, Full), + __DEFINE_LINK_MODE_PARAMS(400000, CR4, Full), + __DEFINE_LINK_MODE_PARAMS(100, FX, Half), + __DEFINE_LINK_MODE_PARAMS(100, FX, Full), +}; + +const struct nla_policy ethnl_linkmodes_set_policy[] = { + [ETHTOOL_A_LINKMODES_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_LINKMODES_AUTONEG] = { .type = NLA_U8 }, + [ETHTOOL_A_LINKMODES_OURS] = { .type = NLA_NESTED }, + [ETHTOOL_A_LINKMODES_SPEED] = { .type = NLA_U32 }, + [ETHTOOL_A_LINKMODES_DUPLEX] = { .type = NLA_U8 }, + [ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG] = { .type = NLA_U8 }, +}; + +/* Set advertised link modes to all supported modes matching requested speed + * and duplex values. Called when autonegotiation is on, speed or duplex is + * requested but no link mode change. This is done in userspace with ioctl() + * interface, move it into kernel for netlink. + * Returns true if advertised modes bitmap was modified. + */ +static bool ethnl_auto_linkmodes(struct ethtool_link_ksettings *ksettings, + bool req_speed, bool req_duplex) +{ + unsigned long *advertising = ksettings->link_modes.advertising; + unsigned long *supported = ksettings->link_modes.supported; + DECLARE_BITMAP(old_adv, __ETHTOOL_LINK_MODE_MASK_NBITS); + unsigned int i; + + BUILD_BUG_ON(ARRAY_SIZE(link_mode_params) != + __ETHTOOL_LINK_MODE_MASK_NBITS); + + bitmap_copy(old_adv, advertising, __ETHTOOL_LINK_MODE_MASK_NBITS); + + for (i = 0; i < __ETHTOOL_LINK_MODE_MASK_NBITS; i++) { + const struct link_mode_info *info = &link_mode_params[i]; + + if (info->speed == SPEED_UNKNOWN) + continue; + if (test_bit(i, supported) && + (!req_speed || info->speed == ksettings->base.speed) && + (!req_duplex || info->duplex == ksettings->base.duplex)) + set_bit(i, advertising); + else + clear_bit(i, advertising); + } + + return !bitmap_equal(old_adv, advertising, + __ETHTOOL_LINK_MODE_MASK_NBITS); +} + +static bool ethnl_validate_master_slave_cfg(u8 cfg) +{ + switch (cfg) { + case MASTER_SLAVE_CFG_MASTER_PREFERRED: + case MASTER_SLAVE_CFG_SLAVE_PREFERRED: + case MASTER_SLAVE_CFG_MASTER_FORCE: + case MASTER_SLAVE_CFG_SLAVE_FORCE: + return true; + } + + return false; +} + +static int ethnl_update_linkmodes(struct genl_info *info, struct nlattr **tb, + struct ethtool_link_ksettings *ksettings, + bool *mod) +{ + struct ethtool_link_settings *lsettings = &ksettings->base; + bool req_speed, req_duplex; + const struct nlattr *master_slave_cfg; + int ret; + + master_slave_cfg = tb[ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG]; + if (master_slave_cfg) { + u8 cfg = nla_get_u8(master_slave_cfg); + + if (lsettings->master_slave_cfg == MASTER_SLAVE_CFG_UNSUPPORTED) { + NL_SET_ERR_MSG_ATTR(info->extack, master_slave_cfg, + "master/slave configuration not supported by device"); + return -EOPNOTSUPP; + } + + if (!ethnl_validate_master_slave_cfg(cfg)) { + NL_SET_ERR_MSG_ATTR(info->extack, master_slave_cfg, + "master/slave value is invalid"); + return -EOPNOTSUPP; + } + } + + *mod = false; + req_speed = tb[ETHTOOL_A_LINKMODES_SPEED]; + req_duplex = tb[ETHTOOL_A_LINKMODES_DUPLEX]; + + ethnl_update_u8(&lsettings->autoneg, tb[ETHTOOL_A_LINKMODES_AUTONEG], + mod); + ret = ethnl_update_bitset(ksettings->link_modes.advertising, + __ETHTOOL_LINK_MODE_MASK_NBITS, + tb[ETHTOOL_A_LINKMODES_OURS], link_mode_names, + info->extack, mod); + if (ret < 0) + return ret; + ethnl_update_u32(&lsettings->speed, tb[ETHTOOL_A_LINKMODES_SPEED], + mod); + ethnl_update_u8(&lsettings->duplex, tb[ETHTOOL_A_LINKMODES_DUPLEX], + mod); + ethnl_update_u8(&lsettings->master_slave_cfg, master_slave_cfg, mod); + + if (!tb[ETHTOOL_A_LINKMODES_OURS] && lsettings->autoneg && + (req_speed || req_duplex) && + ethnl_auto_linkmodes(ksettings, req_speed, req_duplex)) + *mod = true; + + return 0; +} + +int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info) +{ + struct ethtool_link_ksettings ksettings = {}; + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + struct net_device *dev; + bool mod = false; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_LINKMODES_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ret = -EOPNOTSUPP; + if (!dev->ethtool_ops->get_link_ksettings || + !dev->ethtool_ops->set_link_ksettings) + goto out_dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + + ret = __ethtool_get_link_ksettings(dev, &ksettings); + if (ret < 0) { + GENL_SET_ERR_MSG(info, "failed to retrieve link settings"); + goto out_ops; + } + + ret = ethnl_update_linkmodes(info, tb, &ksettings, &mod); + if (ret < 0) + goto out_ops; + + if (mod) { + ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings); + if (ret < 0) + GENL_SET_ERR_MSG(info, "link settings update failed"); + else + ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); + } + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} diff --git a/net/ethtool/linkstate.c b/net/ethtool/linkstate.c new file mode 100644 index 000000000..fb676f349 --- /dev/null +++ b/net/ethtool/linkstate.c @@ -0,0 +1,182 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" +#include <linux/phy.h> + +struct linkstate_req_info { + struct ethnl_req_info base; +}; + +struct linkstate_reply_data { + struct ethnl_reply_data base; + int link; + int sqi; + int sqi_max; + bool link_ext_state_provided; + struct ethtool_link_ext_state_info ethtool_link_ext_state_info; +}; + +#define LINKSTATE_REPDATA(__reply_base) \ + container_of(__reply_base, struct linkstate_reply_data, base) + +const struct nla_policy ethnl_linkstate_get_policy[] = { + [ETHTOOL_A_LINKSTATE_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int linkstate_get_sqi(struct net_device *dev) +{ + struct phy_device *phydev = dev->phydev; + int ret; + + if (!phydev) + return -EOPNOTSUPP; + + mutex_lock(&phydev->lock); + if (!phydev->drv || !phydev->drv->get_sqi) + ret = -EOPNOTSUPP; + else + ret = phydev->drv->get_sqi(phydev); + mutex_unlock(&phydev->lock); + + return ret; +} + +static int linkstate_get_sqi_max(struct net_device *dev) +{ + struct phy_device *phydev = dev->phydev; + int ret; + + if (!phydev) + return -EOPNOTSUPP; + + mutex_lock(&phydev->lock); + if (!phydev->drv || !phydev->drv->get_sqi_max) + ret = -EOPNOTSUPP; + else + ret = phydev->drv->get_sqi_max(phydev); + mutex_unlock(&phydev->lock); + + return ret; +}; + +static int linkstate_get_link_ext_state(struct net_device *dev, + struct linkstate_reply_data *data) +{ + int err; + + if (!dev->ethtool_ops->get_link_ext_state) + return -EOPNOTSUPP; + + err = dev->ethtool_ops->get_link_ext_state(dev, &data->ethtool_link_ext_state_info); + if (err) + return err; + + data->link_ext_state_provided = true; + + return 0; +} + +static int linkstate_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + data->link = __ethtool_get_link(dev); + + ret = linkstate_get_sqi(dev); + if (ret < 0 && ret != -EOPNOTSUPP) + goto out; + data->sqi = ret; + + ret = linkstate_get_sqi_max(dev); + if (ret < 0 && ret != -EOPNOTSUPP) + goto out; + data->sqi_max = ret; + + if (dev->flags & IFF_UP) { + ret = linkstate_get_link_ext_state(dev, data); + if (ret < 0 && ret != -EOPNOTSUPP && ret != -ENODATA) + goto out; + } + + ret = 0; +out: + ethnl_ops_complete(dev); + return ret; +} + +static int linkstate_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base); + int len; + + len = nla_total_size(sizeof(u8)) /* LINKSTATE_LINK */ + + 0; + + if (data->sqi != -EOPNOTSUPP) + len += nla_total_size(sizeof(u32)); + + if (data->sqi_max != -EOPNOTSUPP) + len += nla_total_size(sizeof(u32)); + + if (data->link_ext_state_provided) + len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_STATE */ + + if (data->ethtool_link_ext_state_info.__link_ext_substate) + len += nla_total_size(sizeof(u8)); /* LINKSTATE_EXT_SUBSTATE */ + + return len; +} + +static int linkstate_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + struct linkstate_reply_data *data = LINKSTATE_REPDATA(reply_base); + + if (data->link >= 0 && + nla_put_u8(skb, ETHTOOL_A_LINKSTATE_LINK, !!data->link)) + return -EMSGSIZE; + + if (data->sqi != -EOPNOTSUPP && + nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI, data->sqi)) + return -EMSGSIZE; + + if (data->sqi_max != -EOPNOTSUPP && + nla_put_u32(skb, ETHTOOL_A_LINKSTATE_SQI_MAX, data->sqi_max)) + return -EMSGSIZE; + + if (data->link_ext_state_provided) { + if (nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_STATE, + data->ethtool_link_ext_state_info.link_ext_state)) + return -EMSGSIZE; + + if (data->ethtool_link_ext_state_info.__link_ext_substate && + nla_put_u8(skb, ETHTOOL_A_LINKSTATE_EXT_SUBSTATE, + data->ethtool_link_ext_state_info.__link_ext_substate)) + return -EMSGSIZE; + } + + return 0; +} + +const struct ethnl_request_ops ethnl_linkstate_request_ops = { + .request_cmd = ETHTOOL_MSG_LINKSTATE_GET, + .reply_cmd = ETHTOOL_MSG_LINKSTATE_GET_REPLY, + .hdr_attr = ETHTOOL_A_LINKSTATE_HEADER, + .req_info_size = sizeof(struct linkstate_req_info), + .reply_data_size = sizeof(struct linkstate_reply_data), + + .prepare_data = linkstate_prepare_data, + .reply_size = linkstate_reply_size, + .fill_reply = linkstate_fill_reply, +}; diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c new file mode 100644 index 000000000..25a55086d --- /dev/null +++ b/net/ethtool/netlink.c @@ -0,0 +1,949 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <net/sock.h> +#include <linux/ethtool_netlink.h> +#include "netlink.h" + +static struct genl_family ethtool_genl_family; + +static bool ethnl_ok __read_mostly; +static u32 ethnl_bcast_seq; + +#define ETHTOOL_FLAGS_BASIC (ETHTOOL_FLAG_COMPACT_BITSETS | \ + ETHTOOL_FLAG_OMIT_REPLY) +#define ETHTOOL_FLAGS_STATS (ETHTOOL_FLAGS_BASIC | ETHTOOL_FLAG_STATS) + +const struct nla_policy ethnl_header_policy[] = { + [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, + [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, + .len = ALTIFNAMSIZ - 1 }, + [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, + ETHTOOL_FLAGS_BASIC), +}; + +const struct nla_policy ethnl_header_policy_stats[] = { + [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, + [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, + .len = ALTIFNAMSIZ - 1 }, + [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, + ETHTOOL_FLAGS_STATS), +}; + +/** + * ethnl_parse_header_dev_get() - parse request header + * @req_info: structure to put results into + * @header: nest attribute with request header + * @net: request netns + * @extack: netlink extack for error reporting + * @require_dev: fail if no device identified in header + * + * Parse request header in nested attribute @nest and puts results into + * the structure pointed to by @req_info. Extack from @info is used for error + * reporting. If req_info->dev is not null on return, reference to it has + * been taken. If error is returned, *req_info is null initialized and no + * reference is held. + * + * Return: 0 on success or negative error code + */ +int ethnl_parse_header_dev_get(struct ethnl_req_info *req_info, + const struct nlattr *header, struct net *net, + struct netlink_ext_ack *extack, bool require_dev) +{ + struct nlattr *tb[ARRAY_SIZE(ethnl_header_policy)]; + const struct nlattr *devname_attr; + struct net_device *dev = NULL; + u32 flags = 0; + int ret; + + if (!header) { + NL_SET_ERR_MSG(extack, "request header missing"); + return -EINVAL; + } + /* No validation here, command policy should have a nested policy set + * for the header, therefore validation should have already been done. + */ + ret = nla_parse_nested(tb, ARRAY_SIZE(ethnl_header_policy) - 1, header, + NULL, extack); + if (ret < 0) + return ret; + if (tb[ETHTOOL_A_HEADER_FLAGS]) + flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]); + + devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME]; + if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) { + u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]); + + dev = dev_get_by_index(net, ifindex); + if (!dev) { + NL_SET_ERR_MSG_ATTR(extack, + tb[ETHTOOL_A_HEADER_DEV_INDEX], + "no device matches ifindex"); + return -ENODEV; + } + /* if both ifindex and ifname are passed, they must match */ + if (devname_attr && + strncmp(dev->name, nla_data(devname_attr), IFNAMSIZ)) { + dev_put(dev); + NL_SET_ERR_MSG_ATTR(extack, header, + "ifindex and name do not match"); + return -ENODEV; + } + } else if (devname_attr) { + dev = dev_get_by_name(net, nla_data(devname_attr)); + if (!dev) { + NL_SET_ERR_MSG_ATTR(extack, devname_attr, + "no device matches name"); + return -ENODEV; + } + } else if (require_dev) { + NL_SET_ERR_MSG_ATTR(extack, header, + "neither ifindex nor name specified"); + return -EINVAL; + } + + if (dev && !netif_device_present(dev)) { + dev_put(dev); + NL_SET_ERR_MSG(extack, "device not present"); + return -ENODEV; + } + + req_info->dev = dev; + req_info->flags = flags; + return 0; +} + +/** + * ethnl_fill_reply_header() - Put common header into a reply message + * @skb: skb with the message + * @dev: network device to describe in header + * @attrtype: attribute type to use for the nest + * + * Create a nested attribute with attributes describing given network device. + * + * Return: 0 on success, error value (-EMSGSIZE only) on error + */ +int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev, + u16 attrtype) +{ + struct nlattr *nest; + + if (!dev) + return 0; + nest = nla_nest_start(skb, attrtype); + if (!nest) + return -EMSGSIZE; + + if (nla_put_u32(skb, ETHTOOL_A_HEADER_DEV_INDEX, (u32)dev->ifindex) || + nla_put_string(skb, ETHTOOL_A_HEADER_DEV_NAME, dev->name)) + goto nla_put_failure; + /* If more attributes are put into reply header, ethnl_header_size() + * must be updated to account for them. + */ + + nla_nest_end(skb, nest); + return 0; + +nla_put_failure: + nla_nest_cancel(skb, nest); + return -EMSGSIZE; +} + +/** + * ethnl_reply_init() - Create skb for a reply and fill device identification + * @payload: payload length (without netlink and genetlink header) + * @dev: device the reply is about (may be null) + * @cmd: ETHTOOL_MSG_* message type for reply + * @hdr_attrtype: attribute type for common header + * @info: genetlink info of the received packet we respond to + * @ehdrp: place to store payload pointer returned by genlmsg_new() + * + * Return: pointer to allocated skb on success, NULL on error + */ +struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd, + u16 hdr_attrtype, struct genl_info *info, + void **ehdrp) +{ + struct sk_buff *skb; + + skb = genlmsg_new(payload, GFP_KERNEL); + if (!skb) + goto err; + *ehdrp = genlmsg_put_reply(skb, info, ðtool_genl_family, 0, cmd); + if (!*ehdrp) + goto err_free; + + if (dev) { + int ret; + + ret = ethnl_fill_reply_header(skb, dev, hdr_attrtype); + if (ret < 0) + goto err_free; + } + return skb; + +err_free: + nlmsg_free(skb); +err: + if (info) + GENL_SET_ERR_MSG(info, "failed to setup reply message"); + return NULL; +} + +void *ethnl_dump_put(struct sk_buff *skb, struct netlink_callback *cb, u8 cmd) +{ + return genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, + ðtool_genl_family, 0, cmd); +} + +void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd) +{ + return genlmsg_put(skb, 0, ++ethnl_bcast_seq, ðtool_genl_family, 0, + cmd); +} + +int ethnl_multicast(struct sk_buff *skb, struct net_device *dev) +{ + return genlmsg_multicast_netns(ðtool_genl_family, dev_net(dev), skb, + 0, ETHNL_MCGRP_MONITOR, GFP_KERNEL); +} + +/* GET request helpers */ + +/** + * struct ethnl_dump_ctx - context structure for generic dumpit() callback + * @ops: request ops of currently processed message type + * @req_info: parsed request header of processed request + * @reply_data: data needed to compose the reply + * @pos_hash: saved iteration position - hashbucket + * @pos_idx: saved iteration position - index + * + * These parameters are kept in struct netlink_callback as context preserved + * between iterations. They are initialized by ethnl_default_start() and used + * in ethnl_default_dumpit() and ethnl_default_done(). + */ +struct ethnl_dump_ctx { + const struct ethnl_request_ops *ops; + struct ethnl_req_info *req_info; + struct ethnl_reply_data *reply_data; + int pos_hash; + int pos_idx; +}; + +static const struct ethnl_request_ops * +ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = { + [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops, + [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops, + [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops, + [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops, + [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops, + [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops, + [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops, + [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops, + [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops, + [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops, + [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops, + [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops, + [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops, + [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops, +}; + +static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) +{ + return (struct ethnl_dump_ctx *)cb->ctx; +} + +/** + * ethnl_default_parse() - Parse request message + * @req_info: pointer to structure to put data into + * @tb: parsed attributes + * @net: request netns + * @request_ops: struct request_ops for request type + * @extack: netlink extack for error reporting + * @require_dev: fail if no device identified in header + * + * Parse universal request header and call request specific ->parse_request() + * callback (if defined) to parse the rest of the message. + * + * Return: 0 on success or negative error code + */ +static int ethnl_default_parse(struct ethnl_req_info *req_info, + struct nlattr **tb, struct net *net, + const struct ethnl_request_ops *request_ops, + struct netlink_ext_ack *extack, bool require_dev) +{ + int ret; + + ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], + net, extack, require_dev); + if (ret < 0) + return ret; + + if (request_ops->parse_request) { + ret = request_ops->parse_request(req_info, tb, extack); + if (ret < 0) + return ret; + } + + return 0; +} + +/** + * ethnl_init_reply_data() - Initialize reply data for GET request + * @reply_data: pointer to embedded struct ethnl_reply_data + * @ops: instance of struct ethnl_request_ops describing the layout + * @dev: network device to initialize the reply for + * + * Fills the reply data part with zeros and sets the dev member. Must be called + * before calling the ->fill_reply() callback (for each iteration when handling + * dump requests). + */ +static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data, + const struct ethnl_request_ops *ops, + struct net_device *dev) +{ + memset(reply_data, 0, ops->reply_data_size); + reply_data->dev = dev; +} + +/* default ->doit() handler for GET type requests */ +static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info) +{ + struct ethnl_reply_data *reply_data = NULL; + struct ethnl_req_info *req_info = NULL; + const u8 cmd = info->genlhdr->cmd; + const struct ethnl_request_ops *ops; + struct sk_buff *rskb; + void *reply_payload; + int reply_len; + int ret; + + ops = ethnl_default_requests[cmd]; + if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) + return -EOPNOTSUPP; + req_info = kzalloc(ops->req_info_size, GFP_KERNEL); + if (!req_info) + return -ENOMEM; + reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); + if (!reply_data) { + kfree(req_info); + return -ENOMEM; + } + + ret = ethnl_default_parse(req_info, info->attrs, genl_info_net(info), + ops, info->extack, !ops->allow_nodev_do); + if (ret < 0) + goto err_dev; + ethnl_init_reply_data(reply_data, ops, req_info->dev); + + rtnl_lock(); + ret = ops->prepare_data(req_info, reply_data, info); + rtnl_unlock(); + if (ret < 0) + goto err_cleanup; + ret = ops->reply_size(req_info, reply_data); + if (ret < 0) + goto err_cleanup; + reply_len = ret + ethnl_reply_header_size(); + ret = -ENOMEM; + rskb = ethnl_reply_init(reply_len, req_info->dev, ops->reply_cmd, + ops->hdr_attr, info, &reply_payload); + if (!rskb) + goto err_cleanup; + ret = ops->fill_reply(rskb, req_info, reply_data); + if (ret < 0) + goto err_msg; + if (ops->cleanup_data) + ops->cleanup_data(reply_data); + + genlmsg_end(rskb, reply_payload); + if (req_info->dev) + dev_put(req_info->dev); + kfree(reply_data); + kfree(req_info); + return genlmsg_reply(rskb, info); + +err_msg: + WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len); + nlmsg_free(rskb); +err_cleanup: + if (ops->cleanup_data) + ops->cleanup_data(reply_data); +err_dev: + if (req_info->dev) + dev_put(req_info->dev); + kfree(reply_data); + kfree(req_info); + return ret; +} + +static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev, + const struct ethnl_dump_ctx *ctx, + struct netlink_callback *cb) +{ + void *ehdr; + int ret; + + ehdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, + ðtool_genl_family, NLM_F_MULTI, + ctx->ops->reply_cmd); + if (!ehdr) + return -EMSGSIZE; + + ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev); + rtnl_lock(); + ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, NULL); + rtnl_unlock(); + if (ret < 0) + goto out; + ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr); + if (ret < 0) + goto out; + ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data); + +out: + if (ctx->ops->cleanup_data) + ctx->ops->cleanup_data(ctx->reply_data); + ctx->reply_data->dev = NULL; + if (ret < 0) + genlmsg_cancel(skb, ehdr); + else + genlmsg_end(skb, ehdr); + return ret; +} + +/* Default ->dumpit() handler for GET requests. Device iteration copied from + * rtnl_dump_ifinfo(); we have to be more careful about device hashtable + * persistence as we cannot guarantee to hold RTNL lock through the whole + * function as rtnetnlink does. + */ +static int ethnl_default_dumpit(struct sk_buff *skb, + struct netlink_callback *cb) +{ + struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); + struct net *net = sock_net(skb->sk); + int s_idx = ctx->pos_idx; + int h, idx = 0; + int ret = 0; + + rtnl_lock(); + for (h = ctx->pos_hash; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { + struct hlist_head *head; + struct net_device *dev; + unsigned int seq; + + head = &net->dev_index_head[h]; + +restart_chain: + seq = net->dev_base_seq; + cb->seq = seq; + idx = 0; + hlist_for_each_entry(dev, head, index_hlist) { + if (idx < s_idx) + goto cont; + dev_hold(dev); + rtnl_unlock(); + + ret = ethnl_default_dump_one(skb, dev, ctx, cb); + dev_put(dev); + if (ret < 0) { + if (ret == -EOPNOTSUPP) + goto lock_and_cont; + if (likely(skb->len)) + ret = skb->len; + goto out; + } +lock_and_cont: + rtnl_lock(); + if (net->dev_base_seq != seq) { + s_idx = idx + 1; + goto restart_chain; + } +cont: + idx++; + } + + } + rtnl_unlock(); + +out: + ctx->pos_hash = h; + ctx->pos_idx = idx; + nl_dump_check_consistent(cb, nlmsg_hdr(skb)); + + return ret; +} + +/* generic ->start() handler for GET requests */ +static int ethnl_default_start(struct netlink_callback *cb) +{ + const struct genl_dumpit_info *info = genl_dumpit_info(cb); + struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); + struct ethnl_reply_data *reply_data; + const struct ethnl_request_ops *ops; + struct ethnl_req_info *req_info; + struct genlmsghdr *ghdr; + int ret; + + BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); + + ghdr = nlmsg_data(cb->nlh); + ops = ethnl_default_requests[ghdr->cmd]; + if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) + return -EOPNOTSUPP; + req_info = kzalloc(ops->req_info_size, GFP_KERNEL); + if (!req_info) + return -ENOMEM; + reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); + if (!reply_data) { + ret = -ENOMEM; + goto free_req_info; + } + + ret = ethnl_default_parse(req_info, info->attrs, sock_net(cb->skb->sk), + ops, cb->extack, false); + if (req_info->dev) { + /* We ignore device specification in dump requests but as the + * same parser as for non-dump (doit) requests is used, it + * would take reference to the device if it finds one + */ + dev_put(req_info->dev); + req_info->dev = NULL; + } + if (ret < 0) + goto free_reply_data; + + ctx->ops = ops; + ctx->req_info = req_info; + ctx->reply_data = reply_data; + ctx->pos_hash = 0; + ctx->pos_idx = 0; + + return 0; + +free_reply_data: + kfree(reply_data); +free_req_info: + kfree(req_info); + + return ret; +} + +/* default ->done() handler for GET requests */ +static int ethnl_default_done(struct netlink_callback *cb) +{ + struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); + + kfree(ctx->reply_data); + kfree(ctx->req_info); + + return 0; +} + +static const struct ethnl_request_ops * +ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { + [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, + [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, + [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, + [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, + [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, + [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, + [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, + [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, + [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, + [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, + [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, +}; + +/* default notification handler */ +static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, + const void *data) +{ + struct ethnl_reply_data *reply_data; + const struct ethnl_request_ops *ops; + struct ethnl_req_info *req_info; + struct sk_buff *skb; + void *reply_payload; + int reply_len; + int ret; + + if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || + !ethnl_default_notify_ops[cmd], + "unexpected notification type %u\n", cmd)) + return; + ops = ethnl_default_notify_ops[cmd]; + req_info = kzalloc(ops->req_info_size, GFP_KERNEL); + if (!req_info) + return; + reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); + if (!reply_data) { + kfree(req_info); + return; + } + + req_info->dev = dev; + req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; + + ethnl_init_reply_data(reply_data, ops, dev); + ret = ops->prepare_data(req_info, reply_data, NULL); + if (ret < 0) + goto err_cleanup; + ret = ops->reply_size(req_info, reply_data); + if (ret < 0) + goto err_cleanup; + reply_len = ret + ethnl_reply_header_size(); + ret = -ENOMEM; + skb = genlmsg_new(reply_len, GFP_KERNEL); + if (!skb) + goto err_cleanup; + reply_payload = ethnl_bcastmsg_put(skb, cmd); + if (!reply_payload) + goto err_skb; + ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); + if (ret < 0) + goto err_msg; + ret = ops->fill_reply(skb, req_info, reply_data); + if (ret < 0) + goto err_msg; + if (ops->cleanup_data) + ops->cleanup_data(reply_data); + + genlmsg_end(skb, reply_payload); + kfree(reply_data); + kfree(req_info); + ethnl_multicast(skb, dev); + return; + +err_msg: + WARN_ONCE(ret == -EMSGSIZE, + "calculated message payload length (%d) not sufficient\n", + reply_len); +err_skb: + nlmsg_free(skb); +err_cleanup: + if (ops->cleanup_data) + ops->cleanup_data(reply_data); + kfree(reply_data); + kfree(req_info); + return; +} + +/* notifications */ + +typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, + const void *data); + +static const ethnl_notify_handler_t ethnl_notify_handlers[] = { + [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, + [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, +}; + +void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data) +{ + if (unlikely(!ethnl_ok)) + return; + ASSERT_RTNL(); + + if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && + ethnl_notify_handlers[cmd])) + ethnl_notify_handlers[cmd](dev, cmd, data); + else + WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", + cmd, netdev_name(dev)); +} +EXPORT_SYMBOL(ethtool_notify); + +static void ethnl_notify_features(struct netdev_notifier_info *info) +{ + struct net_device *dev = netdev_notifier_info_to_dev(info); + + ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL); +} + +static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, + void *ptr) +{ + switch (event) { + case NETDEV_FEAT_CHANGE: + ethnl_notify_features(ptr); + break; + } + + return NOTIFY_DONE; +} + +static struct notifier_block ethnl_netdev_notifier = { + .notifier_call = ethnl_netdev_event, +}; + +/* genetlink setup */ + +static const struct genl_ops ethtool_genl_ops[] = { + { + .cmd = ETHTOOL_MSG_STRSET_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_strset_get_policy, + .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_LINKINFO_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_linkinfo_get_policy, + .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_LINKINFO_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_linkinfo, + .policy = ethnl_linkinfo_set_policy, + .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_LINKMODES_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_linkmodes_get_policy, + .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_LINKMODES_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_linkmodes, + .policy = ethnl_linkmodes_set_policy, + .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_LINKSTATE_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_linkstate_get_policy, + .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_DEBUG_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_debug_get_policy, + .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_DEBUG_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_debug, + .policy = ethnl_debug_set_policy, + .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_WOL_GET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_wol_get_policy, + .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_WOL_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_wol, + .policy = ethnl_wol_set_policy, + .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_FEATURES_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_features_get_policy, + .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_FEATURES_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_features, + .policy = ethnl_features_set_policy, + .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_privflags_get_policy, + .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_privflags, + .policy = ethnl_privflags_set_policy, + .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_RINGS_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_rings_get_policy, + .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_RINGS_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_rings, + .policy = ethnl_rings_set_policy, + .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_CHANNELS_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_channels_get_policy, + .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_CHANNELS_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_channels, + .policy = ethnl_channels_set_policy, + .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_COALESCE_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_coalesce_get_policy, + .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_COALESCE_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_coalesce, + .policy = ethnl_coalesce_set_policy, + .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_PAUSE_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_pause_get_policy, + .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_PAUSE_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_pause, + .policy = ethnl_pause_set_policy, + .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_EEE_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_eee_get_policy, + .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_EEE_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_eee, + .policy = ethnl_eee_set_policy, + .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_TSINFO_GET, + .doit = ethnl_default_doit, + .start = ethnl_default_start, + .dumpit = ethnl_default_dumpit, + .done = ethnl_default_done, + .policy = ethnl_tsinfo_get_policy, + .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_act_cable_test, + .policy = ethnl_cable_test_act_policy, + .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_act_cable_test_tdr, + .policy = ethnl_cable_test_tdr_act_policy, + .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1, + }, + { + .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET, + .doit = ethnl_tunnel_info_doit, + .start = ethnl_tunnel_info_start, + .dumpit = ethnl_tunnel_info_dumpit, + .policy = ethnl_tunnel_info_get_policy, + .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, + }, +}; + +static const struct genl_multicast_group ethtool_nl_mcgrps[] = { + [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME }, +}; + +static struct genl_family ethtool_genl_family __ro_after_init = { + .name = ETHTOOL_GENL_NAME, + .version = ETHTOOL_GENL_VERSION, + .netnsok = true, + .parallel_ops = true, + .ops = ethtool_genl_ops, + .n_ops = ARRAY_SIZE(ethtool_genl_ops), + .mcgrps = ethtool_nl_mcgrps, + .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), +}; + +/* module setup */ + +static int __init ethnl_init(void) +{ + int ret; + + ret = genl_register_family(ðtool_genl_family); + if (WARN(ret < 0, "ethtool: genetlink family registration failed")) + return ret; + ethnl_ok = true; + + ret = register_netdevice_notifier(ðnl_netdev_notifier); + WARN(ret < 0, "ethtool: net device notifier registration failed"); + return ret; +} + +subsys_initcall(ethnl_init); diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h new file mode 100644 index 000000000..979dee6bb --- /dev/null +++ b/net/ethtool/netlink.h @@ -0,0 +1,399 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _NET_ETHTOOL_NETLINK_H +#define _NET_ETHTOOL_NETLINK_H + +#include <linux/ethtool_netlink.h> +#include <linux/netdevice.h> +#include <net/genetlink.h> +#include <net/sock.h> + +struct ethnl_req_info; + +int ethnl_parse_header_dev_get(struct ethnl_req_info *req_info, + const struct nlattr *nest, struct net *net, + struct netlink_ext_ack *extack, + bool require_dev); +int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev, + u16 attrtype); +struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd, + u16 hdr_attrtype, struct genl_info *info, + void **ehdrp); +void *ethnl_dump_put(struct sk_buff *skb, struct netlink_callback *cb, u8 cmd); +void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd); +int ethnl_multicast(struct sk_buff *skb, struct net_device *dev); + +/** + * ethnl_strz_size() - calculate attribute length for fixed size string + * @s: ETH_GSTRING_LEN sized string (may not be null terminated) + * + * Return: total length of an attribute with null terminated string from @s + */ +static inline int ethnl_strz_size(const char *s) +{ + return nla_total_size(strnlen(s, ETH_GSTRING_LEN) + 1); +} + +/** + * ethnl_put_strz() - put string attribute with fixed size string + * @skb: skb with the message + * @attrype: attribute type + * @s: ETH_GSTRING_LEN sized string (may not be null terminated) + * + * Puts an attribute with null terminated string from @s into the message. + * + * Return: 0 on success, negative error code on failure + */ +static inline int ethnl_put_strz(struct sk_buff *skb, u16 attrtype, + const char *s) +{ + unsigned int len = strnlen(s, ETH_GSTRING_LEN); + struct nlattr *attr; + + attr = nla_reserve(skb, attrtype, len + 1); + if (!attr) + return -EMSGSIZE; + + memcpy(nla_data(attr), s, len); + ((char *)nla_data(attr))[len] = '\0'; + return 0; +} + +/** + * ethnl_update_u32() - update u32 value from NLA_U32 attribute + * @dst: value to update + * @attr: netlink attribute with new value or null + * @mod: pointer to bool for modification tracking + * + * Copy the u32 value from NLA_U32 netlink attribute @attr into variable + * pointed to by @dst; do nothing if @attr is null. Bool pointed to by @mod + * is set to true if this function changed the value of *dst, otherwise it + * is left as is. + */ +static inline void ethnl_update_u32(u32 *dst, const struct nlattr *attr, + bool *mod) +{ + u32 val; + + if (!attr) + return; + val = nla_get_u32(attr); + if (*dst == val) + return; + + *dst = val; + *mod = true; +} + +/** + * ethnl_update_u8() - update u8 value from NLA_U8 attribute + * @dst: value to update + * @attr: netlink attribute with new value or null + * @mod: pointer to bool for modification tracking + * + * Copy the u8 value from NLA_U8 netlink attribute @attr into variable + * pointed to by @dst; do nothing if @attr is null. Bool pointed to by @mod + * is set to true if this function changed the value of *dst, otherwise it + * is left as is. + */ +static inline void ethnl_update_u8(u8 *dst, const struct nlattr *attr, + bool *mod) +{ + u8 val; + + if (!attr) + return; + val = nla_get_u8(attr); + if (*dst == val) + return; + + *dst = val; + *mod = true; +} + +/** + * ethnl_update_bool32() - update u32 used as bool from NLA_U8 attribute + * @dst: value to update + * @attr: netlink attribute with new value or null + * @mod: pointer to bool for modification tracking + * + * Use the u8 value from NLA_U8 netlink attribute @attr to set u32 variable + * pointed to by @dst to 0 (if zero) or 1 (if not); do nothing if @attr is + * null. Bool pointed to by @mod is set to true if this function changed the + * logical value of *dst, otherwise it is left as is. + */ +static inline void ethnl_update_bool32(u32 *dst, const struct nlattr *attr, + bool *mod) +{ + u8 val; + + if (!attr) + return; + val = !!nla_get_u8(attr); + if (!!*dst == val) + return; + + *dst = val; + *mod = true; +} + +/** + * ethnl_update_binary() - update binary data from NLA_BINARY atribute + * @dst: value to update + * @len: destination buffer length + * @attr: netlink attribute with new value or null + * @mod: pointer to bool for modification tracking + * + * Use the u8 value from NLA_U8 netlink attribute @attr to rewrite data block + * of length @len at @dst by attribute payload; do nothing if @attr is null. + * Bool pointed to by @mod is set to true if this function changed the logical + * value of *dst, otherwise it is left as is. + */ +static inline void ethnl_update_binary(void *dst, unsigned int len, + const struct nlattr *attr, bool *mod) +{ + if (!attr) + return; + if (nla_len(attr) < len) + len = nla_len(attr); + if (!memcmp(dst, nla_data(attr), len)) + return; + + memcpy(dst, nla_data(attr), len); + *mod = true; +} + +/** + * ethnl_update_bitfield32() - update u32 value from NLA_BITFIELD32 attribute + * @dst: value to update + * @attr: netlink attribute with new value or null + * @mod: pointer to bool for modification tracking + * + * Update bits in u32 value which are set in attribute's mask to values from + * attribute's value. Do nothing if @attr is null or the value wouldn't change; + * otherwise, set bool pointed to by @mod to true. + */ +static inline void ethnl_update_bitfield32(u32 *dst, const struct nlattr *attr, + bool *mod) +{ + struct nla_bitfield32 change; + u32 newval; + + if (!attr) + return; + change = nla_get_bitfield32(attr); + newval = (*dst & ~change.selector) | (change.value & change.selector); + if (*dst == newval) + return; + + *dst = newval; + *mod = true; +} + +/** + * ethnl_reply_header_size() - total size of reply header + * + * This is an upper estimate so that we do not need to hold RTNL lock longer + * than necessary (to prevent rename between size estimate and composing the + * message). Accounts only for device ifindex and name as those are the only + * attributes ethnl_fill_reply_header() puts into the reply header. + */ +static inline unsigned int ethnl_reply_header_size(void) +{ + return nla_total_size(nla_total_size(sizeof(u32)) + + nla_total_size(IFNAMSIZ)); +} + +/* GET request handling */ + +/* Unified processing of GET requests uses two data structures: request info + * and reply data. Request info holds information parsed from client request + * and its stays constant through all request processing. Reply data holds data + * retrieved from ethtool_ops callbacks or other internal sources which is used + * to compose the reply. When processing a dump request, request info is filled + * only once (when the request message is parsed) but reply data is filled for + * each reply message. + * + * Both structures consist of part common for all request types (struct + * ethnl_req_info and struct ethnl_reply_data defined below) and optional + * parts specific for each request type. Common part always starts at offset 0. + */ + +/** + * struct ethnl_req_info - base type of request information for GET requests + * @dev: network device the request is for (may be null) + * @flags: request flags common for all request types + * + * This is a common base for request specific structures holding data from + * parsed userspace request. These always embed struct ethnl_req_info at + * zero offset. + */ +struct ethnl_req_info { + struct net_device *dev; + u32 flags; +}; + +/** + * struct ethnl_reply_data - base type of reply data for GET requests + * @dev: device for current reply message; in single shot requests it is + * equal to ðnl_req_info.dev; in dumps it's different for each + * reply message + * + * This is a common base for request specific structures holding data for + * kernel reply message. These always embed struct ethnl_reply_data at zero + * offset. + */ +struct ethnl_reply_data { + struct net_device *dev; +}; + +static inline int ethnl_ops_begin(struct net_device *dev) +{ + if (dev && dev->reg_state == NETREG_UNREGISTERING) + return -ENODEV; + + if (dev && dev->ethtool_ops->begin) + return dev->ethtool_ops->begin(dev); + else + return 0; +} + +static inline void ethnl_ops_complete(struct net_device *dev) +{ + if (dev && dev->ethtool_ops->complete) + dev->ethtool_ops->complete(dev); +} + +/** + * struct ethnl_request_ops - unified handling of GET requests + * @request_cmd: command id for request (GET) + * @reply_cmd: command id for reply (GET_REPLY) + * @hdr_attr: attribute type for request header + * @req_info_size: size of request info + * @reply_data_size: size of reply data + * @allow_nodev_do: allow non-dump request with no device identification + * @parse_request: + * Parse request except common header (struct ethnl_req_info). Common + * header is already filled on entry, the rest up to @repdata_offset + * is zero initialized. This callback should only modify type specific + * request info by parsed attributes from request message. + * @prepare_data: + * Retrieve and prepare data needed to compose a reply message. Calls to + * ethtool_ops handlers are limited to this callback. Common reply data + * (struct ethnl_reply_data) is filled on entry, type specific part after + * it is zero initialized. This callback should only modify the type + * specific part of reply data. Device identification from struct + * ethnl_reply_data is to be used as for dump requests, it iterates + * through network devices while dev member of struct ethnl_req_info + * points to the device from client request. + * @reply_size: + * Estimate reply message size. Returned value must be sufficient for + * message payload without common reply header. The callback may returned + * estimate higher than actual message size if exact calculation would + * not be worth the saved memory space. + * @fill_reply: + * Fill reply message payload (except for common header) from reply data. + * The callback must not generate more payload than previously called + * ->reply_size() estimated. + * @cleanup_data: + * Optional cleanup called when reply data is no longer needed. Can be + * used e.g. to free any additional data structures outside the main + * structure which were allocated by ->prepare_data(). When processing + * dump requests, ->cleanup() is called for each message. + * + * Description of variable parts of GET request handling when using the + * unified infrastructure. When used, a pointer to an instance of this + * structure is to be added to ðnl_default_requests array and generic + * handlers ethnl_default_doit(), ethnl_default_dumpit(), + * ethnl_default_start() and ethnl_default_done() used in @ethtool_genl_ops; + * ethnl_default_notify() can be used in @ethnl_notify_handlers to send + * notifications of the corresponding type. + */ +struct ethnl_request_ops { + u8 request_cmd; + u8 reply_cmd; + u16 hdr_attr; + unsigned int req_info_size; + unsigned int reply_data_size; + bool allow_nodev_do; + + int (*parse_request)(struct ethnl_req_info *req_info, + struct nlattr **tb, + struct netlink_ext_ack *extack); + int (*prepare_data)(const struct ethnl_req_info *req_info, + struct ethnl_reply_data *reply_data, + struct genl_info *info); + int (*reply_size)(const struct ethnl_req_info *req_info, + const struct ethnl_reply_data *reply_data); + int (*fill_reply)(struct sk_buff *skb, + const struct ethnl_req_info *req_info, + const struct ethnl_reply_data *reply_data); + void (*cleanup_data)(struct ethnl_reply_data *reply_data); +}; + +/* request handlers */ + +extern const struct ethnl_request_ops ethnl_strset_request_ops; +extern const struct ethnl_request_ops ethnl_linkinfo_request_ops; +extern const struct ethnl_request_ops ethnl_linkmodes_request_ops; +extern const struct ethnl_request_ops ethnl_linkstate_request_ops; +extern const struct ethnl_request_ops ethnl_debug_request_ops; +extern const struct ethnl_request_ops ethnl_wol_request_ops; +extern const struct ethnl_request_ops ethnl_features_request_ops; +extern const struct ethnl_request_ops ethnl_privflags_request_ops; +extern const struct ethnl_request_ops ethnl_rings_request_ops; +extern const struct ethnl_request_ops ethnl_channels_request_ops; +extern const struct ethnl_request_ops ethnl_coalesce_request_ops; +extern const struct ethnl_request_ops ethnl_pause_request_ops; +extern const struct ethnl_request_ops ethnl_eee_request_ops; +extern const struct ethnl_request_ops ethnl_tsinfo_request_ops; + +extern const struct nla_policy ethnl_header_policy[ETHTOOL_A_HEADER_FLAGS + 1]; +extern const struct nla_policy ethnl_header_policy_stats[ETHTOOL_A_HEADER_FLAGS + 1]; +extern const struct nla_policy ethnl_strset_get_policy[ETHTOOL_A_STRSET_COUNTS_ONLY + 1]; +extern const struct nla_policy ethnl_linkinfo_get_policy[ETHTOOL_A_LINKINFO_HEADER + 1]; +extern const struct nla_policy ethnl_linkinfo_set_policy[ETHTOOL_A_LINKINFO_TP_MDIX_CTRL + 1]; +extern const struct nla_policy ethnl_linkmodes_get_policy[ETHTOOL_A_LINKMODES_HEADER + 1]; +extern const struct nla_policy ethnl_linkmodes_set_policy[ETHTOOL_A_LINKMODES_MASTER_SLAVE_CFG + 1]; +extern const struct nla_policy ethnl_linkstate_get_policy[ETHTOOL_A_LINKSTATE_HEADER + 1]; +extern const struct nla_policy ethnl_debug_get_policy[ETHTOOL_A_DEBUG_HEADER + 1]; +extern const struct nla_policy ethnl_debug_set_policy[ETHTOOL_A_DEBUG_MSGMASK + 1]; +extern const struct nla_policy ethnl_wol_get_policy[ETHTOOL_A_WOL_HEADER + 1]; +extern const struct nla_policy ethnl_wol_set_policy[ETHTOOL_A_WOL_SOPASS + 1]; +extern const struct nla_policy ethnl_features_get_policy[ETHTOOL_A_FEATURES_HEADER + 1]; +extern const struct nla_policy ethnl_features_set_policy[ETHTOOL_A_FEATURES_WANTED + 1]; +extern const struct nla_policy ethnl_privflags_get_policy[ETHTOOL_A_PRIVFLAGS_HEADER + 1]; +extern const struct nla_policy ethnl_privflags_set_policy[ETHTOOL_A_PRIVFLAGS_FLAGS + 1]; +extern const struct nla_policy ethnl_rings_get_policy[ETHTOOL_A_RINGS_HEADER + 1]; +extern const struct nla_policy ethnl_rings_set_policy[ETHTOOL_A_RINGS_TX + 1]; +extern const struct nla_policy ethnl_channels_get_policy[ETHTOOL_A_CHANNELS_HEADER + 1]; +extern const struct nla_policy ethnl_channels_set_policy[ETHTOOL_A_CHANNELS_COMBINED_COUNT + 1]; +extern const struct nla_policy ethnl_coalesce_get_policy[ETHTOOL_A_COALESCE_HEADER + 1]; +extern const struct nla_policy ethnl_coalesce_set_policy[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL + 1]; +extern const struct nla_policy ethnl_pause_get_policy[ETHTOOL_A_PAUSE_HEADER + 1]; +extern const struct nla_policy ethnl_pause_set_policy[ETHTOOL_A_PAUSE_TX + 1]; +extern const struct nla_policy ethnl_eee_get_policy[ETHTOOL_A_EEE_HEADER + 1]; +extern const struct nla_policy ethnl_eee_set_policy[ETHTOOL_A_EEE_TX_LPI_TIMER + 1]; +extern const struct nla_policy ethnl_tsinfo_get_policy[ETHTOOL_A_TSINFO_HEADER + 1]; +extern const struct nla_policy ethnl_cable_test_act_policy[ETHTOOL_A_CABLE_TEST_HEADER + 1]; +extern const struct nla_policy ethnl_cable_test_tdr_act_policy[ETHTOOL_A_CABLE_TEST_TDR_CFG + 1]; +extern const struct nla_policy ethnl_tunnel_info_get_policy[ETHTOOL_A_TUNNEL_INFO_HEADER + 1]; + +int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_debug(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_wol(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_features(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_privflags(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_rings(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_channels(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_coalesce(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_pause(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_eee(struct sk_buff *skb, struct genl_info *info); +int ethnl_act_cable_test(struct sk_buff *skb, struct genl_info *info); +int ethnl_act_cable_test_tdr(struct sk_buff *skb, struct genl_info *info); +int ethnl_tunnel_info_doit(struct sk_buff *skb, struct genl_info *info); +int ethnl_tunnel_info_start(struct netlink_callback *cb); +int ethnl_tunnel_info_dumpit(struct sk_buff *skb, struct netlink_callback *cb); + +#endif /* _NET_ETHTOOL_NETLINK_H */ diff --git a/net/ethtool/pause.c b/net/ethtool/pause.c new file mode 100644 index 000000000..c7bc704c8 --- /dev/null +++ b/net/ethtool/pause.c @@ -0,0 +1,192 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" + +struct pause_req_info { + struct ethnl_req_info base; +}; + +struct pause_reply_data { + struct ethnl_reply_data base; + struct ethtool_pauseparam pauseparam; + struct ethtool_pause_stats pausestat; +}; + +#define PAUSE_REPDATA(__reply_base) \ + container_of(__reply_base, struct pause_reply_data, base) + +const struct nla_policy ethnl_pause_get_policy[] = { + [ETHTOOL_A_PAUSE_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy_stats), +}; + +static void ethtool_stats_init(u64 *stats, unsigned int n) +{ + while (n--) + stats[n] = ETHTOOL_STAT_NOT_SET; +} + +static int pause_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct pause_reply_data *data = PAUSE_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + if (!dev->ethtool_ops->get_pauseparam) + return -EOPNOTSUPP; + + ethtool_stats_init((u64 *)&data->pausestat, + sizeof(data->pausestat) / 8); + + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + dev->ethtool_ops->get_pauseparam(dev, &data->pauseparam); + if (req_base->flags & ETHTOOL_FLAG_STATS && + dev->ethtool_ops->get_pause_stats) + dev->ethtool_ops->get_pause_stats(dev, &data->pausestat); + ethnl_ops_complete(dev); + + return 0; +} + +static int pause_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + int n = nla_total_size(sizeof(u8)) + /* _PAUSE_AUTONEG */ + nla_total_size(sizeof(u8)) + /* _PAUSE_RX */ + nla_total_size(sizeof(u8)); /* _PAUSE_TX */ + + if (req_base->flags & ETHTOOL_FLAG_STATS) + n += nla_total_size(0) + /* _PAUSE_STATS */ + nla_total_size_64bit(sizeof(u64)) * ETHTOOL_PAUSE_STAT_CNT; + return n; +} + +static int ethtool_put_stat(struct sk_buff *skb, u64 val, u16 attrtype, + u16 padtype) +{ + if (val == ETHTOOL_STAT_NOT_SET) + return 0; + if (nla_put_u64_64bit(skb, attrtype, val, padtype)) + return -EMSGSIZE; + + return 0; +} + +static int pause_put_stats(struct sk_buff *skb, + const struct ethtool_pause_stats *pause_stats) +{ + const u16 pad = ETHTOOL_A_PAUSE_STAT_PAD; + struct nlattr *nest; + + nest = nla_nest_start(skb, ETHTOOL_A_PAUSE_STATS); + if (!nest) + return -EMSGSIZE; + + if (ethtool_put_stat(skb, pause_stats->tx_pause_frames, + ETHTOOL_A_PAUSE_STAT_TX_FRAMES, pad) || + ethtool_put_stat(skb, pause_stats->rx_pause_frames, + ETHTOOL_A_PAUSE_STAT_RX_FRAMES, pad)) + goto err_cancel; + + nla_nest_end(skb, nest); + return 0; + +err_cancel: + nla_nest_cancel(skb, nest); + return -EMSGSIZE; +} + +static int pause_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct pause_reply_data *data = PAUSE_REPDATA(reply_base); + const struct ethtool_pauseparam *pauseparam = &data->pauseparam; + + if (nla_put_u8(skb, ETHTOOL_A_PAUSE_AUTONEG, !!pauseparam->autoneg) || + nla_put_u8(skb, ETHTOOL_A_PAUSE_RX, !!pauseparam->rx_pause) || + nla_put_u8(skb, ETHTOOL_A_PAUSE_TX, !!pauseparam->tx_pause)) + return -EMSGSIZE; + + if (req_base->flags & ETHTOOL_FLAG_STATS && + pause_put_stats(skb, &data->pausestat)) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_pause_request_ops = { + .request_cmd = ETHTOOL_MSG_PAUSE_GET, + .reply_cmd = ETHTOOL_MSG_PAUSE_GET_REPLY, + .hdr_attr = ETHTOOL_A_PAUSE_HEADER, + .req_info_size = sizeof(struct pause_req_info), + .reply_data_size = sizeof(struct pause_reply_data), + + .prepare_data = pause_prepare_data, + .reply_size = pause_reply_size, + .fill_reply = pause_fill_reply, +}; + +/* PAUSE_SET */ + +const struct nla_policy ethnl_pause_set_policy[] = { + [ETHTOOL_A_PAUSE_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_PAUSE_AUTONEG] = { .type = NLA_U8 }, + [ETHTOOL_A_PAUSE_RX] = { .type = NLA_U8 }, + [ETHTOOL_A_PAUSE_TX] = { .type = NLA_U8 }, +}; + +int ethnl_set_pause(struct sk_buff *skb, struct genl_info *info) +{ + struct ethtool_pauseparam params = {}; + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + const struct ethtool_ops *ops; + struct net_device *dev; + bool mod = false; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_PAUSE_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ops = dev->ethtool_ops; + ret = -EOPNOTSUPP; + if (!ops->get_pauseparam || !ops->set_pauseparam) + goto out_dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + ops->get_pauseparam(dev, ¶ms); + + ethnl_update_bool32(¶ms.autoneg, tb[ETHTOOL_A_PAUSE_AUTONEG], &mod); + ethnl_update_bool32(¶ms.rx_pause, tb[ETHTOOL_A_PAUSE_RX], &mod); + ethnl_update_bool32(¶ms.tx_pause, tb[ETHTOOL_A_PAUSE_TX], &mod); + ret = 0; + if (!mod) + goto out_ops; + + ret = dev->ethtool_ops->set_pauseparam(dev, ¶ms); + if (ret < 0) + goto out_ops; + ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} diff --git a/net/ethtool/privflags.c b/net/ethtool/privflags.c new file mode 100644 index 000000000..fc9f3be23 --- /dev/null +++ b/net/ethtool/privflags.c @@ -0,0 +1,201 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" +#include "bitset.h" + +struct privflags_req_info { + struct ethnl_req_info base; +}; + +struct privflags_reply_data { + struct ethnl_reply_data base; + const char (*priv_flag_names)[ETH_GSTRING_LEN]; + unsigned int n_priv_flags; + u32 priv_flags; +}; + +#define PRIVFLAGS_REPDATA(__reply_base) \ + container_of(__reply_base, struct privflags_reply_data, base) + +const struct nla_policy ethnl_privflags_get_policy[] = { + [ETHTOOL_A_PRIVFLAGS_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int ethnl_get_priv_flags_info(struct net_device *dev, + unsigned int *count, + const char (**names)[ETH_GSTRING_LEN]) +{ + const struct ethtool_ops *ops = dev->ethtool_ops; + int nflags; + + nflags = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); + if (nflags < 0) + return nflags; + + if (names) { + *names = kcalloc(nflags, ETH_GSTRING_LEN, GFP_KERNEL); + if (!*names) + return -ENOMEM; + ops->get_strings(dev, ETH_SS_PRIV_FLAGS, (u8 *)*names); + } + + /* We can pass more than 32 private flags to userspace via netlink but + * we cannot get more with ethtool_ops::get_priv_flags(). Note that we + * must not adjust nflags before allocating the space for flag names + * as the buffer must be large enough for all flags. + */ + if (WARN_ONCE(nflags > 32, + "device %s reports more than 32 private flags (%d)\n", + netdev_name(dev), nflags)) + nflags = 32; + *count = nflags; + + return 0; +} + +static int privflags_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct privflags_reply_data *data = PRIVFLAGS_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + const char (*names)[ETH_GSTRING_LEN]; + const struct ethtool_ops *ops; + unsigned int nflags; + int ret; + + ops = dev->ethtool_ops; + if (!ops->get_priv_flags || !ops->get_sset_count || !ops->get_strings) + return -EOPNOTSUPP; + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + + ret = ethnl_get_priv_flags_info(dev, &nflags, &names); + if (ret < 0) + goto out_ops; + data->priv_flags = ops->get_priv_flags(dev); + data->priv_flag_names = names; + data->n_priv_flags = nflags; + +out_ops: + ethnl_ops_complete(dev); + return ret; +} + +static int privflags_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct privflags_reply_data *data = PRIVFLAGS_REPDATA(reply_base); + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const u32 all_flags = ~(u32)0 >> (32 - data->n_priv_flags); + + return ethnl_bitset32_size(&data->priv_flags, &all_flags, + data->n_priv_flags, + data->priv_flag_names, compact); +} + +static int privflags_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct privflags_reply_data *data = PRIVFLAGS_REPDATA(reply_base); + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const u32 all_flags = ~(u32)0 >> (32 - data->n_priv_flags); + + return ethnl_put_bitset32(skb, ETHTOOL_A_PRIVFLAGS_FLAGS, + &data->priv_flags, &all_flags, + data->n_priv_flags, data->priv_flag_names, + compact); +} + +static void privflags_cleanup_data(struct ethnl_reply_data *reply_data) +{ + struct privflags_reply_data *data = PRIVFLAGS_REPDATA(reply_data); + + kfree(data->priv_flag_names); +} + +const struct ethnl_request_ops ethnl_privflags_request_ops = { + .request_cmd = ETHTOOL_MSG_PRIVFLAGS_GET, + .reply_cmd = ETHTOOL_MSG_PRIVFLAGS_GET_REPLY, + .hdr_attr = ETHTOOL_A_PRIVFLAGS_HEADER, + .req_info_size = sizeof(struct privflags_req_info), + .reply_data_size = sizeof(struct privflags_reply_data), + + .prepare_data = privflags_prepare_data, + .reply_size = privflags_reply_size, + .fill_reply = privflags_fill_reply, + .cleanup_data = privflags_cleanup_data, +}; + +/* PRIVFLAGS_SET */ + +const struct nla_policy ethnl_privflags_set_policy[] = { + [ETHTOOL_A_PRIVFLAGS_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_PRIVFLAGS_FLAGS] = { .type = NLA_NESTED }, +}; + +int ethnl_set_privflags(struct sk_buff *skb, struct genl_info *info) +{ + const char (*names)[ETH_GSTRING_LEN] = NULL; + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + const struct ethtool_ops *ops; + struct net_device *dev; + unsigned int nflags; + bool mod = false; + bool compact; + u32 flags; + int ret; + + if (!tb[ETHTOOL_A_PRIVFLAGS_FLAGS]) + return -EINVAL; + ret = ethnl_bitset_is_compact(tb[ETHTOOL_A_PRIVFLAGS_FLAGS], &compact); + if (ret < 0) + return ret; + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_PRIVFLAGS_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ops = dev->ethtool_ops; + ret = -EOPNOTSUPP; + if (!ops->get_priv_flags || !ops->set_priv_flags || + !ops->get_sset_count || !ops->get_strings) + goto out_dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + ret = ethnl_get_priv_flags_info(dev, &nflags, compact ? NULL : &names); + if (ret < 0) + goto out_ops; + flags = ops->get_priv_flags(dev); + + ret = ethnl_update_bitset32(&flags, nflags, + tb[ETHTOOL_A_PRIVFLAGS_FLAGS], names, + info->extack, &mod); + if (ret < 0 || !mod) + goto out_free; + ret = ops->set_priv_flags(dev, flags); + if (ret < 0) + goto out_free; + ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); + +out_free: + kfree(names); +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} diff --git a/net/ethtool/rings.c b/net/ethtool/rings.c new file mode 100644 index 000000000..4e097812a --- /dev/null +++ b/net/ethtool/rings.c @@ -0,0 +1,179 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" + +struct rings_req_info { + struct ethnl_req_info base; +}; + +struct rings_reply_data { + struct ethnl_reply_data base; + struct ethtool_ringparam ringparam; +}; + +#define RINGS_REPDATA(__reply_base) \ + container_of(__reply_base, struct rings_reply_data, base) + +const struct nla_policy ethnl_rings_get_policy[] = { + [ETHTOOL_A_RINGS_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int rings_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct rings_reply_data *data = RINGS_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + if (!dev->ethtool_ops->get_ringparam) + return -EOPNOTSUPP; + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + dev->ethtool_ops->get_ringparam(dev, &data->ringparam); + ethnl_ops_complete(dev); + + return 0; +} + +static int rings_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + return nla_total_size(sizeof(u32)) + /* _RINGS_RX_MAX */ + nla_total_size(sizeof(u32)) + /* _RINGS_RX_MINI_MAX */ + nla_total_size(sizeof(u32)) + /* _RINGS_RX_JUMBO_MAX */ + nla_total_size(sizeof(u32)) + /* _RINGS_TX_MAX */ + nla_total_size(sizeof(u32)) + /* _RINGS_RX */ + nla_total_size(sizeof(u32)) + /* _RINGS_RX_MINI */ + nla_total_size(sizeof(u32)) + /* _RINGS_RX_JUMBO */ + nla_total_size(sizeof(u32)); /* _RINGS_TX */ +} + +static int rings_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct rings_reply_data *data = RINGS_REPDATA(reply_base); + const struct ethtool_ringparam *ringparam = &data->ringparam; + + if ((ringparam->rx_max_pending && + (nla_put_u32(skb, ETHTOOL_A_RINGS_RX_MAX, + ringparam->rx_max_pending) || + nla_put_u32(skb, ETHTOOL_A_RINGS_RX, + ringparam->rx_pending))) || + (ringparam->rx_mini_max_pending && + (nla_put_u32(skb, ETHTOOL_A_RINGS_RX_MINI_MAX, + ringparam->rx_mini_max_pending) || + nla_put_u32(skb, ETHTOOL_A_RINGS_RX_MINI, + ringparam->rx_mini_pending))) || + (ringparam->rx_jumbo_max_pending && + (nla_put_u32(skb, ETHTOOL_A_RINGS_RX_JUMBO_MAX, + ringparam->rx_jumbo_max_pending) || + nla_put_u32(skb, ETHTOOL_A_RINGS_RX_JUMBO, + ringparam->rx_jumbo_pending))) || + (ringparam->tx_max_pending && + (nla_put_u32(skb, ETHTOOL_A_RINGS_TX_MAX, + ringparam->tx_max_pending) || + nla_put_u32(skb, ETHTOOL_A_RINGS_TX, + ringparam->tx_pending)))) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_rings_request_ops = { + .request_cmd = ETHTOOL_MSG_RINGS_GET, + .reply_cmd = ETHTOOL_MSG_RINGS_GET_REPLY, + .hdr_attr = ETHTOOL_A_RINGS_HEADER, + .req_info_size = sizeof(struct rings_req_info), + .reply_data_size = sizeof(struct rings_reply_data), + + .prepare_data = rings_prepare_data, + .reply_size = rings_reply_size, + .fill_reply = rings_fill_reply, +}; + +/* RINGS_SET */ + +const struct nla_policy ethnl_rings_set_policy[] = { + [ETHTOOL_A_RINGS_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_RINGS_RX] = { .type = NLA_U32 }, + [ETHTOOL_A_RINGS_RX_MINI] = { .type = NLA_U32 }, + [ETHTOOL_A_RINGS_RX_JUMBO] = { .type = NLA_U32 }, + [ETHTOOL_A_RINGS_TX] = { .type = NLA_U32 }, +}; + +int ethnl_set_rings(struct sk_buff *skb, struct genl_info *info) +{ + struct ethtool_ringparam ringparam = {}; + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + const struct nlattr *err_attr; + const struct ethtool_ops *ops; + struct net_device *dev; + bool mod = false; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_RINGS_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ops = dev->ethtool_ops; + ret = -EOPNOTSUPP; + if (!ops->get_ringparam || !ops->set_ringparam) + goto out_dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + ops->get_ringparam(dev, &ringparam); + + ethnl_update_u32(&ringparam.rx_pending, tb[ETHTOOL_A_RINGS_RX], &mod); + ethnl_update_u32(&ringparam.rx_mini_pending, + tb[ETHTOOL_A_RINGS_RX_MINI], &mod); + ethnl_update_u32(&ringparam.rx_jumbo_pending, + tb[ETHTOOL_A_RINGS_RX_JUMBO], &mod); + ethnl_update_u32(&ringparam.tx_pending, tb[ETHTOOL_A_RINGS_TX], &mod); + ret = 0; + if (!mod) + goto out_ops; + + /* ensure new ring parameters are within limits */ + if (ringparam.rx_pending > ringparam.rx_max_pending) + err_attr = tb[ETHTOOL_A_RINGS_RX]; + else if (ringparam.rx_mini_pending > ringparam.rx_mini_max_pending) + err_attr = tb[ETHTOOL_A_RINGS_RX_MINI]; + else if (ringparam.rx_jumbo_pending > ringparam.rx_jumbo_max_pending) + err_attr = tb[ETHTOOL_A_RINGS_RX_JUMBO]; + else if (ringparam.tx_pending > ringparam.tx_max_pending) + err_attr = tb[ETHTOOL_A_RINGS_TX]; + else + err_attr = NULL; + if (err_attr) { + ret = -EINVAL; + NL_SET_ERR_MSG_ATTR(info->extack, err_attr, + "requested ring size exceeds maximum"); + goto out_ops; + } + + ret = dev->ethtool_ops->set_ringparam(dev, &ringparam); + if (ret < 0) + goto out_ops; + ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} diff --git a/net/ethtool/strset.c b/net/ethtool/strset.c new file mode 100644 index 000000000..9908b922c --- /dev/null +++ b/net/ethtool/strset.c @@ -0,0 +1,455 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/ethtool.h> +#include <linux/phy.h> +#include "netlink.h" +#include "common.h" + +struct strset_info { + bool per_dev; + bool free_strings; + unsigned int count; + const char (*strings)[ETH_GSTRING_LEN]; +}; + +static const struct strset_info info_template[] = { + [ETH_SS_TEST] = { + .per_dev = true, + }, + [ETH_SS_STATS] = { + .per_dev = true, + }, + [ETH_SS_PRIV_FLAGS] = { + .per_dev = true, + }, + [ETH_SS_FEATURES] = { + .per_dev = false, + .count = ARRAY_SIZE(netdev_features_strings), + .strings = netdev_features_strings, + }, + [ETH_SS_RSS_HASH_FUNCS] = { + .per_dev = false, + .count = ARRAY_SIZE(rss_hash_func_strings), + .strings = rss_hash_func_strings, + }, + [ETH_SS_TUNABLES] = { + .per_dev = false, + .count = ARRAY_SIZE(tunable_strings), + .strings = tunable_strings, + }, + [ETH_SS_PHY_STATS] = { + .per_dev = true, + }, + [ETH_SS_PHY_TUNABLES] = { + .per_dev = false, + .count = ARRAY_SIZE(phy_tunable_strings), + .strings = phy_tunable_strings, + }, + [ETH_SS_LINK_MODES] = { + .per_dev = false, + .count = __ETHTOOL_LINK_MODE_MASK_NBITS, + .strings = link_mode_names, + }, + [ETH_SS_MSG_CLASSES] = { + .per_dev = false, + .count = NETIF_MSG_CLASS_COUNT, + .strings = netif_msg_class_names, + }, + [ETH_SS_WOL_MODES] = { + .per_dev = false, + .count = WOL_MODE_COUNT, + .strings = wol_mode_names, + }, + [ETH_SS_SOF_TIMESTAMPING] = { + .per_dev = false, + .count = __SOF_TIMESTAMPING_CNT, + .strings = sof_timestamping_names, + }, + [ETH_SS_TS_TX_TYPES] = { + .per_dev = false, + .count = __HWTSTAMP_TX_CNT, + .strings = ts_tx_type_names, + }, + [ETH_SS_TS_RX_FILTERS] = { + .per_dev = false, + .count = __HWTSTAMP_FILTER_CNT, + .strings = ts_rx_filter_names, + }, + [ETH_SS_UDP_TUNNEL_TYPES] = { + .per_dev = false, + .count = __ETHTOOL_UDP_TUNNEL_TYPE_CNT, + .strings = udp_tunnel_type_names, + }, +}; + +struct strset_req_info { + struct ethnl_req_info base; + u32 req_ids; + bool counts_only; +}; + +#define STRSET_REQINFO(__req_base) \ + container_of(__req_base, struct strset_req_info, base) + +struct strset_reply_data { + struct ethnl_reply_data base; + struct strset_info sets[ETH_SS_COUNT]; +}; + +#define STRSET_REPDATA(__reply_base) \ + container_of(__reply_base, struct strset_reply_data, base) + +const struct nla_policy ethnl_strset_get_policy[] = { + [ETHTOOL_A_STRSET_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_STRSET_STRINGSETS] = { .type = NLA_NESTED }, + [ETHTOOL_A_STRSET_COUNTS_ONLY] = { .type = NLA_FLAG }, +}; + +static const struct nla_policy get_stringset_policy[] = { + [ETHTOOL_A_STRINGSET_ID] = { .type = NLA_U32 }, +}; + +/** + * strset_include() - test if a string set should be included in reply + * @info: parsed client request + * @data: pointer to request data structure + * @id: id of string set to check (ETH_SS_* constants) + */ +static bool strset_include(const struct strset_req_info *info, + const struct strset_reply_data *data, u32 id) +{ + bool per_dev; + + BUILD_BUG_ON(ETH_SS_COUNT >= BITS_PER_BYTE * sizeof(info->req_ids)); + + if (info->req_ids) + return info->req_ids & (1U << id); + per_dev = data->sets[id].per_dev; + if (!per_dev && !data->sets[id].strings) + return false; + + return data->base.dev ? per_dev : !per_dev; +} + +static int strset_get_id(const struct nlattr *nest, u32 *val, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[ARRAY_SIZE(get_stringset_policy)]; + int ret; + + ret = nla_parse_nested(tb, ARRAY_SIZE(get_stringset_policy) - 1, nest, + get_stringset_policy, extack); + if (ret < 0) + return ret; + if (!tb[ETHTOOL_A_STRINGSET_ID]) + return -EINVAL; + + *val = nla_get_u32(tb[ETHTOOL_A_STRINGSET_ID]); + return 0; +} + +static const struct nla_policy strset_stringsets_policy[] = { + [ETHTOOL_A_STRINGSETS_STRINGSET] = { .type = NLA_NESTED }, +}; + +static int strset_parse_request(struct ethnl_req_info *req_base, + struct nlattr **tb, + struct netlink_ext_ack *extack) +{ + struct strset_req_info *req_info = STRSET_REQINFO(req_base); + struct nlattr *nest = tb[ETHTOOL_A_STRSET_STRINGSETS]; + struct nlattr *attr; + int rem, ret; + + if (!nest) + return 0; + ret = nla_validate_nested(nest, + ARRAY_SIZE(strset_stringsets_policy) - 1, + strset_stringsets_policy, extack); + if (ret < 0) + return ret; + + req_info->counts_only = tb[ETHTOOL_A_STRSET_COUNTS_ONLY]; + nla_for_each_nested(attr, nest, rem) { + u32 id; + + if (WARN_ONCE(nla_type(attr) != ETHTOOL_A_STRINGSETS_STRINGSET, + "unexpected attrtype %u in ETHTOOL_A_STRSET_STRINGSETS\n", + nla_type(attr))) + return -EINVAL; + + ret = strset_get_id(attr, &id, extack); + if (ret < 0) + return ret; + if (id >= ETH_SS_COUNT) { + NL_SET_ERR_MSG_ATTR(extack, attr, + "unknown string set id"); + return -EOPNOTSUPP; + } + + req_info->req_ids |= (1U << id); + } + + return 0; +} + +static void strset_cleanup_data(struct ethnl_reply_data *reply_base) +{ + struct strset_reply_data *data = STRSET_REPDATA(reply_base); + unsigned int i; + + for (i = 0; i < ETH_SS_COUNT; i++) + if (data->sets[i].free_strings) { + kfree(data->sets[i].strings); + data->sets[i].strings = NULL; + data->sets[i].free_strings = false; + } +} + +static int strset_prepare_set(struct strset_info *info, struct net_device *dev, + unsigned int id, bool counts_only) +{ + const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; + const struct ethtool_ops *ops = dev->ethtool_ops; + void *strings; + int count, ret; + + if (id == ETH_SS_PHY_STATS && dev->phydev && + !ops->get_ethtool_phy_stats && phy_ops && + phy_ops->get_sset_count) + ret = phy_ops->get_sset_count(dev->phydev); + else if (ops->get_sset_count && ops->get_strings) + ret = ops->get_sset_count(dev, id); + else + ret = -EOPNOTSUPP; + if (ret <= 0) { + info->count = 0; + return 0; + } + + count = ret; + if (!counts_only) { + strings = kcalloc(count, ETH_GSTRING_LEN, GFP_KERNEL); + if (!strings) + return -ENOMEM; + if (id == ETH_SS_PHY_STATS && dev->phydev && + !ops->get_ethtool_phy_stats && phy_ops && + phy_ops->get_strings) + phy_ops->get_strings(dev->phydev, strings); + else + ops->get_strings(dev, id, strings); + info->strings = strings; + info->free_strings = true; + } + info->count = count; + + return 0; +} + +static int strset_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + const struct strset_req_info *req_info = STRSET_REQINFO(req_base); + struct strset_reply_data *data = STRSET_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + unsigned int i; + int ret; + + BUILD_BUG_ON(ARRAY_SIZE(info_template) != ETH_SS_COUNT); + memcpy(&data->sets, &info_template, sizeof(data->sets)); + + if (!dev) { + for (i = 0; i < ETH_SS_COUNT; i++) { + if ((req_info->req_ids & (1U << i)) && + data->sets[i].per_dev) { + if (info) + GENL_SET_ERR_MSG(info, "requested per device strings without dev"); + return -EINVAL; + } + } + return 0; + } + + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto err_strset; + for (i = 0; i < ETH_SS_COUNT; i++) { + if (!strset_include(req_info, data, i) || + !data->sets[i].per_dev) + continue; + + ret = strset_prepare_set(&data->sets[i], dev, i, + req_info->counts_only); + if (ret < 0) + goto err_ops; + } + ethnl_ops_complete(dev); + + return 0; +err_ops: + ethnl_ops_complete(dev); +err_strset: + strset_cleanup_data(reply_base); + return ret; +} + +/* calculate size of ETHTOOL_A_STRSET_STRINGSET nest for one string set */ +static int strset_set_size(const struct strset_info *info, bool counts_only) +{ + unsigned int len = 0; + unsigned int i; + + if (info->count == 0) + return 0; + if (counts_only) + return nla_total_size(2 * nla_total_size(sizeof(u32))); + + for (i = 0; i < info->count; i++) { + const char *str = info->strings[i]; + + /* ETHTOOL_A_STRING_INDEX, ETHTOOL_A_STRING_VALUE, nest */ + len += nla_total_size(nla_total_size(sizeof(u32)) + + ethnl_strz_size(str)); + } + /* ETHTOOL_A_STRINGSET_ID, ETHTOOL_A_STRINGSET_COUNT */ + len = 2 * nla_total_size(sizeof(u32)) + nla_total_size(len); + + return nla_total_size(len); +} + +static int strset_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct strset_req_info *req_info = STRSET_REQINFO(req_base); + const struct strset_reply_data *data = STRSET_REPDATA(reply_base); + unsigned int i; + int len = 0; + int ret; + + len += nla_total_size(0); /* ETHTOOL_A_STRSET_STRINGSETS */ + + for (i = 0; i < ETH_SS_COUNT; i++) { + const struct strset_info *set_info = &data->sets[i]; + + if (!strset_include(req_info, data, i)) + continue; + + ret = strset_set_size(set_info, req_info->counts_only); + if (ret < 0) + return ret; + len += ret; + } + + return len; +} + +/* fill one string into reply */ +static int strset_fill_string(struct sk_buff *skb, + const struct strset_info *set_info, u32 idx) +{ + struct nlattr *string_attr; + const char *value; + + value = set_info->strings[idx]; + + string_attr = nla_nest_start(skb, ETHTOOL_A_STRINGS_STRING); + if (!string_attr) + return -EMSGSIZE; + if (nla_put_u32(skb, ETHTOOL_A_STRING_INDEX, idx) || + ethnl_put_strz(skb, ETHTOOL_A_STRING_VALUE, value)) + goto nla_put_failure; + nla_nest_end(skb, string_attr); + + return 0; +nla_put_failure: + nla_nest_cancel(skb, string_attr); + return -EMSGSIZE; +} + +/* fill one string set into reply */ +static int strset_fill_set(struct sk_buff *skb, + const struct strset_info *set_info, u32 id, + bool counts_only) +{ + struct nlattr *stringset_attr; + struct nlattr *strings_attr; + unsigned int i; + + if (!set_info->per_dev && !set_info->strings) + return -EOPNOTSUPP; + if (set_info->count == 0) + return 0; + stringset_attr = nla_nest_start(skb, ETHTOOL_A_STRINGSETS_STRINGSET); + if (!stringset_attr) + return -EMSGSIZE; + + if (nla_put_u32(skb, ETHTOOL_A_STRINGSET_ID, id) || + nla_put_u32(skb, ETHTOOL_A_STRINGSET_COUNT, set_info->count)) + goto nla_put_failure; + + if (!counts_only) { + strings_attr = nla_nest_start(skb, ETHTOOL_A_STRINGSET_STRINGS); + if (!strings_attr) + goto nla_put_failure; + for (i = 0; i < set_info->count; i++) { + if (strset_fill_string(skb, set_info, i) < 0) + goto nla_put_failure; + } + nla_nest_end(skb, strings_attr); + } + + nla_nest_end(skb, stringset_attr); + return 0; + +nla_put_failure: + nla_nest_cancel(skb, stringset_attr); + return -EMSGSIZE; +} + +static int strset_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct strset_req_info *req_info = STRSET_REQINFO(req_base); + const struct strset_reply_data *data = STRSET_REPDATA(reply_base); + struct nlattr *nest; + unsigned int i; + int ret; + + nest = nla_nest_start(skb, ETHTOOL_A_STRSET_STRINGSETS); + if (!nest) + return -EMSGSIZE; + + for (i = 0; i < ETH_SS_COUNT; i++) { + if (strset_include(req_info, data, i)) { + ret = strset_fill_set(skb, &data->sets[i], i, + req_info->counts_only); + if (ret < 0) + goto nla_put_failure; + } + } + + nla_nest_end(skb, nest); + return 0; + +nla_put_failure: + nla_nest_cancel(skb, nest); + return ret; +} + +const struct ethnl_request_ops ethnl_strset_request_ops = { + .request_cmd = ETHTOOL_MSG_STRSET_GET, + .reply_cmd = ETHTOOL_MSG_STRSET_GET_REPLY, + .hdr_attr = ETHTOOL_A_STRSET_HEADER, + .req_info_size = sizeof(struct strset_req_info), + .reply_data_size = sizeof(struct strset_reply_data), + .allow_nodev_do = true, + + .parse_request = strset_parse_request, + .prepare_data = strset_prepare_data, + .reply_size = strset_reply_size, + .fill_reply = strset_fill_reply, + .cleanup_data = strset_cleanup_data, +}; diff --git a/net/ethtool/tsinfo.c b/net/ethtool/tsinfo.c new file mode 100644 index 000000000..63b5814bd --- /dev/null +++ b/net/ethtool/tsinfo.c @@ -0,0 +1,136 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/net_tstamp.h> + +#include "netlink.h" +#include "common.h" +#include "bitset.h" + +struct tsinfo_req_info { + struct ethnl_req_info base; +}; + +struct tsinfo_reply_data { + struct ethnl_reply_data base; + struct ethtool_ts_info ts_info; +}; + +#define TSINFO_REPDATA(__reply_base) \ + container_of(__reply_base, struct tsinfo_reply_data, base) + +const struct nla_policy ethnl_tsinfo_get_policy[] = { + [ETHTOOL_A_TSINFO_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int tsinfo_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + ret = __ethtool_get_ts_info(dev, &data->ts_info); + ethnl_ops_complete(dev); + + return ret; +} + +static int tsinfo_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base); + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const struct ethtool_ts_info *ts_info = &data->ts_info; + int len = 0; + int ret; + + BUILD_BUG_ON(__SOF_TIMESTAMPING_CNT > 32); + BUILD_BUG_ON(__HWTSTAMP_TX_CNT > 32); + BUILD_BUG_ON(__HWTSTAMP_FILTER_CNT > 32); + + if (ts_info->so_timestamping) { + ret = ethnl_bitset32_size(&ts_info->so_timestamping, NULL, + __SOF_TIMESTAMPING_CNT, + sof_timestamping_names, compact); + if (ret < 0) + return ret; + len += ret; /* _TSINFO_TIMESTAMPING */ + } + if (ts_info->tx_types) { + ret = ethnl_bitset32_size(&ts_info->tx_types, NULL, + __HWTSTAMP_TX_CNT, + ts_tx_type_names, compact); + if (ret < 0) + return ret; + len += ret; /* _TSINFO_TX_TYPES */ + } + if (ts_info->rx_filters) { + ret = ethnl_bitset32_size(&ts_info->rx_filters, NULL, + __HWTSTAMP_FILTER_CNT, + ts_rx_filter_names, compact); + if (ret < 0) + return ret; + len += ret; /* _TSINFO_RX_FILTERS */ + } + if (ts_info->phc_index >= 0) + len += nla_total_size(sizeof(u32)); /* _TSINFO_PHC_INDEX */ + + return len; +} + +static int tsinfo_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base); + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const struct ethtool_ts_info *ts_info = &data->ts_info; + int ret; + + if (ts_info->so_timestamping) { + ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_TIMESTAMPING, + &ts_info->so_timestamping, NULL, + __SOF_TIMESTAMPING_CNT, + sof_timestamping_names, compact); + if (ret < 0) + return ret; + } + if (ts_info->tx_types) { + ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_TX_TYPES, + &ts_info->tx_types, NULL, + __HWTSTAMP_TX_CNT, + ts_tx_type_names, compact); + if (ret < 0) + return ret; + } + if (ts_info->rx_filters) { + ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_RX_FILTERS, + &ts_info->rx_filters, NULL, + __HWTSTAMP_FILTER_CNT, + ts_rx_filter_names, compact); + if (ret < 0) + return ret; + } + if (ts_info->phc_index >= 0 && + nla_put_u32(skb, ETHTOOL_A_TSINFO_PHC_INDEX, ts_info->phc_index)) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_tsinfo_request_ops = { + .request_cmd = ETHTOOL_MSG_TSINFO_GET, + .reply_cmd = ETHTOOL_MSG_TSINFO_GET_REPLY, + .hdr_attr = ETHTOOL_A_TSINFO_HEADER, + .req_info_size = sizeof(struct tsinfo_req_info), + .reply_data_size = sizeof(struct tsinfo_reply_data), + + .prepare_data = tsinfo_prepare_data, + .reply_size = tsinfo_reply_size, + .fill_reply = tsinfo_fill_reply, +}; diff --git a/net/ethtool/tunnels.c b/net/ethtool/tunnels.c new file mode 100644 index 000000000..e7f2ee0d2 --- /dev/null +++ b/net/ethtool/tunnels.c @@ -0,0 +1,298 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/ethtool_netlink.h> +#include <net/udp_tunnel.h> +#include <net/vxlan.h> + +#include "bitset.h" +#include "common.h" +#include "netlink.h" + +const struct nla_policy ethnl_tunnel_info_get_policy[] = { + [ETHTOOL_A_TUNNEL_INFO_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static_assert(ETHTOOL_UDP_TUNNEL_TYPE_VXLAN == ilog2(UDP_TUNNEL_TYPE_VXLAN)); +static_assert(ETHTOOL_UDP_TUNNEL_TYPE_GENEVE == ilog2(UDP_TUNNEL_TYPE_GENEVE)); +static_assert(ETHTOOL_UDP_TUNNEL_TYPE_VXLAN_GPE == + ilog2(UDP_TUNNEL_TYPE_VXLAN_GPE)); + +static ssize_t ethnl_udp_table_reply_size(unsigned int types, bool compact) +{ + ssize_t size; + + size = ethnl_bitset32_size(&types, NULL, __ETHTOOL_UDP_TUNNEL_TYPE_CNT, + udp_tunnel_type_names, compact); + if (size < 0) + return size; + + return size + + nla_total_size(0) + /* _UDP_TABLE */ + nla_total_size(sizeof(u32)); /* _UDP_TABLE_SIZE */ +} + +static ssize_t +ethnl_tunnel_info_reply_size(const struct ethnl_req_info *req_base, + struct netlink_ext_ack *extack) +{ + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const struct udp_tunnel_nic_info *info; + unsigned int i; + ssize_t ret; + size_t size; + + info = req_base->dev->udp_tunnel_nic_info; + if (!info) { + NL_SET_ERR_MSG(extack, + "device does not report tunnel offload info"); + return -EOPNOTSUPP; + } + + size = nla_total_size(0); /* _INFO_UDP_PORTS */ + + for (i = 0; i < UDP_TUNNEL_NIC_MAX_TABLES; i++) { + if (!info->tables[i].n_entries) + break; + + ret = ethnl_udp_table_reply_size(info->tables[i].tunnel_types, + compact); + if (ret < 0) + return ret; + size += ret; + + size += udp_tunnel_nic_dump_size(req_base->dev, i); + } + + if (info->flags & UDP_TUNNEL_NIC_INFO_STATIC_IANA_VXLAN) { + ret = ethnl_udp_table_reply_size(0, compact); + if (ret < 0) + return ret; + size += ret; + + size += nla_total_size(0) + /* _TABLE_ENTRY */ + nla_total_size(sizeof(__be16)) + /* _ENTRY_PORT */ + nla_total_size(sizeof(u32)); /* _ENTRY_TYPE */ + } + + return size; +} + +static int +ethnl_tunnel_info_fill_reply(const struct ethnl_req_info *req_base, + struct sk_buff *skb) +{ + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const struct udp_tunnel_nic_info *info; + struct nlattr *ports, *table, *entry; + unsigned int i; + + info = req_base->dev->udp_tunnel_nic_info; + if (!info) + return -EOPNOTSUPP; + + ports = nla_nest_start(skb, ETHTOOL_A_TUNNEL_INFO_UDP_PORTS); + if (!ports) + return -EMSGSIZE; + + for (i = 0; i < UDP_TUNNEL_NIC_MAX_TABLES; i++) { + if (!info->tables[i].n_entries) + break; + + table = nla_nest_start(skb, ETHTOOL_A_TUNNEL_UDP_TABLE); + if (!table) + goto err_cancel_ports; + + if (nla_put_u32(skb, ETHTOOL_A_TUNNEL_UDP_TABLE_SIZE, + info->tables[i].n_entries)) + goto err_cancel_table; + + if (ethnl_put_bitset32(skb, ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES, + &info->tables[i].tunnel_types, NULL, + __ETHTOOL_UDP_TUNNEL_TYPE_CNT, + udp_tunnel_type_names, compact)) + goto err_cancel_table; + + if (udp_tunnel_nic_dump_write(req_base->dev, i, skb)) + goto err_cancel_table; + + nla_nest_end(skb, table); + } + + if (info->flags & UDP_TUNNEL_NIC_INFO_STATIC_IANA_VXLAN) { + u32 zero = 0; + + table = nla_nest_start(skb, ETHTOOL_A_TUNNEL_UDP_TABLE); + if (!table) + goto err_cancel_ports; + + if (nla_put_u32(skb, ETHTOOL_A_TUNNEL_UDP_TABLE_SIZE, 1)) + goto err_cancel_table; + + if (ethnl_put_bitset32(skb, ETHTOOL_A_TUNNEL_UDP_TABLE_TYPES, + &zero, NULL, + __ETHTOOL_UDP_TUNNEL_TYPE_CNT, + udp_tunnel_type_names, compact)) + goto err_cancel_table; + + entry = nla_nest_start(skb, ETHTOOL_A_TUNNEL_UDP_TABLE_ENTRY); + + if (nla_put_be16(skb, ETHTOOL_A_TUNNEL_UDP_ENTRY_PORT, + htons(IANA_VXLAN_UDP_PORT)) || + nla_put_u32(skb, ETHTOOL_A_TUNNEL_UDP_ENTRY_TYPE, + ilog2(UDP_TUNNEL_TYPE_VXLAN))) + goto err_cancel_entry; + + nla_nest_end(skb, entry); + nla_nest_end(skb, table); + } + + nla_nest_end(skb, ports); + + return 0; + +err_cancel_entry: + nla_nest_cancel(skb, entry); +err_cancel_table: + nla_nest_cancel(skb, table); +err_cancel_ports: + nla_nest_cancel(skb, ports); + return -EMSGSIZE; +} + +int ethnl_tunnel_info_doit(struct sk_buff *skb, struct genl_info *info) +{ + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + struct sk_buff *rskb; + void *reply_payload; + int reply_len; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_TUNNEL_INFO_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + + rtnl_lock(); + ret = ethnl_tunnel_info_reply_size(&req_info, info->extack); + if (ret < 0) + goto err_unlock_rtnl; + reply_len = ret + ethnl_reply_header_size(); + + rskb = ethnl_reply_init(reply_len, req_info.dev, + ETHTOOL_MSG_TUNNEL_INFO_GET_REPLY, + ETHTOOL_A_TUNNEL_INFO_HEADER, + info, &reply_payload); + if (!rskb) { + ret = -ENOMEM; + goto err_unlock_rtnl; + } + + ret = ethnl_tunnel_info_fill_reply(&req_info, rskb); + if (ret) + goto err_free_msg; + rtnl_unlock(); + dev_put(req_info.dev); + genlmsg_end(rskb, reply_payload); + + return genlmsg_reply(rskb, info); + +err_free_msg: + nlmsg_free(rskb); +err_unlock_rtnl: + rtnl_unlock(); + dev_put(req_info.dev); + return ret; +} + +struct ethnl_tunnel_info_dump_ctx { + struct ethnl_req_info req_info; + int pos_hash; + int pos_idx; +}; + +int ethnl_tunnel_info_start(struct netlink_callback *cb) +{ + const struct genl_dumpit_info *info = genl_dumpit_info(cb); + struct ethnl_tunnel_info_dump_ctx *ctx = (void *)cb->ctx; + struct nlattr **tb = info->attrs; + int ret; + + BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); + + memset(ctx, 0, sizeof(*ctx)); + + ret = ethnl_parse_header_dev_get(&ctx->req_info, + tb[ETHTOOL_A_TUNNEL_INFO_HEADER], + sock_net(cb->skb->sk), cb->extack, + false); + if (ctx->req_info.dev) { + dev_put(ctx->req_info.dev); + ctx->req_info.dev = NULL; + } + + return ret; +} + +int ethnl_tunnel_info_dumpit(struct sk_buff *skb, struct netlink_callback *cb) +{ + struct ethnl_tunnel_info_dump_ctx *ctx = (void *)cb->ctx; + struct net *net = sock_net(skb->sk); + int s_idx = ctx->pos_idx; + int h, idx = 0; + int ret = 0; + void *ehdr; + + rtnl_lock(); + cb->seq = net->dev_base_seq; + for (h = ctx->pos_hash; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { + struct hlist_head *head; + struct net_device *dev; + + head = &net->dev_index_head[h]; + idx = 0; + hlist_for_each_entry(dev, head, index_hlist) { + if (idx < s_idx) + goto cont; + + ehdr = ethnl_dump_put(skb, cb, + ETHTOOL_MSG_TUNNEL_INFO_GET_REPLY); + if (!ehdr) { + ret = -EMSGSIZE; + goto out; + } + + ret = ethnl_fill_reply_header(skb, dev, ETHTOOL_A_TUNNEL_INFO_HEADER); + if (ret < 0) { + genlmsg_cancel(skb, ehdr); + goto out; + } + + ctx->req_info.dev = dev; + ret = ethnl_tunnel_info_fill_reply(&ctx->req_info, skb); + ctx->req_info.dev = NULL; + if (ret < 0) { + genlmsg_cancel(skb, ehdr); + if (ret == -EOPNOTSUPP) + goto cont; + goto out; + } + genlmsg_end(skb, ehdr); +cont: + idx++; + } + } +out: + rtnl_unlock(); + + ctx->pos_hash = h; + ctx->pos_idx = idx; + nl_dump_check_consistent(cb, nlmsg_hdr(skb)); + + if (ret == -EMSGSIZE && skb->len) + return skb->len; + return ret; +} diff --git a/net/ethtool/wol.c b/net/ethtool/wol.c new file mode 100644 index 000000000..ada7df233 --- /dev/null +++ b/net/ethtool/wol.c @@ -0,0 +1,170 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" +#include "bitset.h" + +struct wol_req_info { + struct ethnl_req_info base; +}; + +struct wol_reply_data { + struct ethnl_reply_data base; + struct ethtool_wolinfo wol; + bool show_sopass; +}; + +#define WOL_REPDATA(__reply_base) \ + container_of(__reply_base, struct wol_reply_data, base) + +const struct nla_policy ethnl_wol_get_policy[] = { + [ETHTOOL_A_WOL_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int wol_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct wol_reply_data *data = WOL_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + if (!dev->ethtool_ops->get_wol) + return -EOPNOTSUPP; + + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + dev->ethtool_ops->get_wol(dev, &data->wol); + ethnl_ops_complete(dev); + /* do not include password in notifications */ + data->show_sopass = info && (data->wol.supported & WAKE_MAGICSECURE); + + return 0; +} + +static int wol_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const struct wol_reply_data *data = WOL_REPDATA(reply_base); + int len; + + len = ethnl_bitset32_size(&data->wol.wolopts, &data->wol.supported, + WOL_MODE_COUNT, wol_mode_names, compact); + if (len < 0) + return len; + if (data->show_sopass) + len += nla_total_size(sizeof(data->wol.sopass)); + + return len; +} + +static int wol_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; + const struct wol_reply_data *data = WOL_REPDATA(reply_base); + int ret; + + ret = ethnl_put_bitset32(skb, ETHTOOL_A_WOL_MODES, &data->wol.wolopts, + &data->wol.supported, WOL_MODE_COUNT, + wol_mode_names, compact); + if (ret < 0) + return ret; + if (data->show_sopass && + nla_put(skb, ETHTOOL_A_WOL_SOPASS, sizeof(data->wol.sopass), + data->wol.sopass)) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_wol_request_ops = { + .request_cmd = ETHTOOL_MSG_WOL_GET, + .reply_cmd = ETHTOOL_MSG_WOL_GET_REPLY, + .hdr_attr = ETHTOOL_A_WOL_HEADER, + .req_info_size = sizeof(struct wol_req_info), + .reply_data_size = sizeof(struct wol_reply_data), + + .prepare_data = wol_prepare_data, + .reply_size = wol_reply_size, + .fill_reply = wol_fill_reply, +}; + +/* WOL_SET */ + +const struct nla_policy ethnl_wol_set_policy[] = { + [ETHTOOL_A_WOL_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_WOL_MODES] = { .type = NLA_NESTED }, + [ETHTOOL_A_WOL_SOPASS] = { .type = NLA_BINARY, + .len = SOPASS_MAX }, +}; + +int ethnl_set_wol(struct sk_buff *skb, struct genl_info *info) +{ + struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + struct net_device *dev; + bool mod = false; + int ret; + + ret = ethnl_parse_header_dev_get(&req_info, tb[ETHTOOL_A_WOL_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ret = -EOPNOTSUPP; + if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) + goto out_dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + + dev->ethtool_ops->get_wol(dev, &wol); + ret = ethnl_update_bitset32(&wol.wolopts, WOL_MODE_COUNT, + tb[ETHTOOL_A_WOL_MODES], wol_mode_names, + info->extack, &mod); + if (ret < 0) + goto out_ops; + if (wol.wolopts & ~wol.supported) { + NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_WOL_MODES], + "cannot enable unsupported WoL mode"); + ret = -EINVAL; + goto out_ops; + } + if (tb[ETHTOOL_A_WOL_SOPASS]) { + if (!(wol.supported & WAKE_MAGICSECURE)) { + NL_SET_ERR_MSG_ATTR(info->extack, + tb[ETHTOOL_A_WOL_SOPASS], + "magicsecure not supported, cannot set password"); + ret = -EINVAL; + goto out_ops; + } + ethnl_update_binary(wol.sopass, sizeof(wol.sopass), + tb[ETHTOOL_A_WOL_SOPASS], &mod); + } + + if (!mod) + goto out_ops; + ret = dev->ethtool_ops->set_wol(dev, &wol); + if (ret) + goto out_ops; + dev->wol_enabled = !!wol.wolopts; + ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} |