diff options
Diffstat (limited to '')
| -rw-r--r-- | src/shared/ethtool-util.c | 1149 |
1 files changed, 1149 insertions, 0 deletions
diff --git a/src/shared/ethtool-util.c b/src/shared/ethtool-util.c new file mode 100644 index 0000000..e6fab26 --- /dev/null +++ b/src/shared/ethtool-util.c @@ -0,0 +1,1149 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <net/if.h> +#include <sys/ioctl.h> +#include <linux/ethtool.h> +#include <linux/netdevice.h> +#include <linux/sockios.h> + +#include "conf-parser.h" +#include "ethtool-util.h" +#include "extract-word.h" +#include "fd-util.h" +#include "log.h" +#include "memory-util.h" +#include "socket-util.h" +#include "string-table.h" +#include "strxcpyx.h" + +static const char* const duplex_table[_DUP_MAX] = { + [DUP_FULL] = "full", + [DUP_HALF] = "half" +}; + +DEFINE_STRING_TABLE_LOOKUP(duplex, Duplex); +DEFINE_CONFIG_PARSE_ENUM(config_parse_duplex, duplex, Duplex, "Failed to parse duplex setting"); + +static const char* const wol_table[_WOL_MAX] = { + [WOL_PHY] = "phy", + [WOL_UCAST] = "unicast", + [WOL_MCAST] = "multicast", + [WOL_BCAST] = "broadcast", + [WOL_ARP] = "arp", + [WOL_MAGIC] = "magic", + [WOL_MAGICSECURE] = "secureon", + [WOL_OFF] = "off", +}; + +DEFINE_STRING_TABLE_LOOKUP(wol, WakeOnLan); +DEFINE_CONFIG_PARSE_ENUM(config_parse_wol, wol, WakeOnLan, "Failed to parse WakeOnLan setting"); + +static const char* const port_table[] = { + [NET_DEV_PORT_TP] = "tp", + [NET_DEV_PORT_AUI] = "aui", + [NET_DEV_PORT_MII] = "mii", + [NET_DEV_PORT_FIBRE] = "fibre", + [NET_DEV_PORT_BNC] = "bnc", +}; + +DEFINE_STRING_TABLE_LOOKUP(port, NetDevPort); +DEFINE_CONFIG_PARSE_ENUM(config_parse_port, port, NetDevPort, "Failed to parse Port setting"); + +static const char* const netdev_feature_table[_NET_DEV_FEAT_MAX] = { + [NET_DEV_FEAT_RX] = "rx-checksum", + [NET_DEV_FEAT_TX] = "tx-checksum-", /* The suffix "-" means any feature beginning with "tx-checksum-" */ + [NET_DEV_FEAT_GSO] = "tx-generic-segmentation", + [NET_DEV_FEAT_GRO] = "rx-gro", + [NET_DEV_FEAT_LRO] = "rx-lro", + [NET_DEV_FEAT_TSO] = "tx-tcp-segmentation", + [NET_DEV_FEAT_TSO6] = "tx-tcp6-segmentation", +}; + +static const char* const ethtool_link_mode_bit_table[] = { + [ETHTOOL_LINK_MODE_10baseT_Half_BIT] = "10baset-half", + [ETHTOOL_LINK_MODE_10baseT_Full_BIT] = "10baset-full", + [ETHTOOL_LINK_MODE_100baseT_Half_BIT] = "100baset-half", + [ETHTOOL_LINK_MODE_100baseT_Full_BIT] = "100baset-full", + [ETHTOOL_LINK_MODE_1000baseT_Half_BIT] = "1000baset-half", + [ETHTOOL_LINK_MODE_1000baseT_Full_BIT] = "1000baset-full", + [ETHTOOL_LINK_MODE_Autoneg_BIT] = "autonegotiation", + [ETHTOOL_LINK_MODE_TP_BIT] = "tp", + [ETHTOOL_LINK_MODE_AUI_BIT] = "aui", + [ETHTOOL_LINK_MODE_MII_BIT] = "mii", + [ETHTOOL_LINK_MODE_FIBRE_BIT] = "fibre", + [ETHTOOL_LINK_MODE_BNC_BIT] = "bnc", + [ETHTOOL_LINK_MODE_10000baseT_Full_BIT] = "10000baset-full", + [ETHTOOL_LINK_MODE_Pause_BIT] = "pause", + [ETHTOOL_LINK_MODE_Asym_Pause_BIT] = "asym-pause", + [ETHTOOL_LINK_MODE_2500baseX_Full_BIT] = "2500basex-full", + [ETHTOOL_LINK_MODE_Backplane_BIT] = "backplane", + [ETHTOOL_LINK_MODE_1000baseKX_Full_BIT] = "1000basekx-full", + [ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT] = "10000basekx4-full", + [ETHTOOL_LINK_MODE_10000baseKR_Full_BIT] = "10000basekr-full", + [ETHTOOL_LINK_MODE_10000baseR_FEC_BIT] = "10000baser-fec", + [ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT] = "20000basemld2-full", + [ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT] = "20000basekr2-full", + [ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT] = "40000basekr4-full", + [ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT] = "40000basecr4-full", + [ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT] = "40000basesr4-full", + [ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT] = "40000baselr4-full", + [ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT] = "56000basekr4-full", + [ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT] = "56000basecr4-full", + [ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT] = "56000basesr4-full", + [ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT] = "56000baselr4-full", + [ETHTOOL_LINK_MODE_25000baseCR_Full_BIT] = "25000basecr-full", + [ETHTOOL_LINK_MODE_25000baseKR_Full_BIT] = "25000basekr-full", + [ETHTOOL_LINK_MODE_25000baseSR_Full_BIT] = "25000basesr-full", + [ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT] = "50000basecr2-full", + [ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT] = "50000basekr2-full", + [ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT] = "100000basekr4-full", + [ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT] = "100000basesr4-full", + [ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT] = "100000basecr4-full", + [ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT] = "100000baselr4-er4-full", + [ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT] = "50000basesr2-full", + [ETHTOOL_LINK_MODE_1000baseX_Full_BIT] = "1000basex-full", + [ETHTOOL_LINK_MODE_10000baseCR_Full_BIT] = "10000basecr-full", + [ETHTOOL_LINK_MODE_10000baseSR_Full_BIT] = "10000basesr-full", + [ETHTOOL_LINK_MODE_10000baseLR_Full_BIT] = "10000baselr-full", + [ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT] = "10000baselrm-full", + [ETHTOOL_LINK_MODE_10000baseER_Full_BIT] = "10000baseer-full", + [ETHTOOL_LINK_MODE_2500baseT_Full_BIT] = "2500baset-full", + [ETHTOOL_LINK_MODE_5000baseT_Full_BIT] = "5000baset-full", + [ETHTOOL_LINK_MODE_FEC_NONE_BIT] = "fec-none", + [ETHTOOL_LINK_MODE_FEC_RS_BIT] = "fec-rs", + [ETHTOOL_LINK_MODE_FEC_BASER_BIT] = "fec-baser", + [ETHTOOL_LINK_MODE_50000baseKR_Full_BIT] = "50000basekr-full", + [ETHTOOL_LINK_MODE_50000baseSR_Full_BIT] = "50000basesr-full", + [ETHTOOL_LINK_MODE_50000baseCR_Full_BIT] = "50000basecr-full", + [ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT] = "50000baselr-er-fr-full", + [ETHTOOL_LINK_MODE_50000baseDR_Full_BIT] = "50000basedr-full", + [ETHTOOL_LINK_MODE_100000baseKR2_Full_BIT] = "100000basekr2-full", + [ETHTOOL_LINK_MODE_100000baseSR2_Full_BIT] = "100000basesr2-full", + [ETHTOOL_LINK_MODE_100000baseCR2_Full_BIT] = "100000basecr2-full", + [ETHTOOL_LINK_MODE_100000baseLR2_ER2_FR2_Full_BIT] = "100000baselr2-er2-fr2-full", + [ETHTOOL_LINK_MODE_100000baseDR2_Full_BIT] = "100000basedr2-full", + [ETHTOOL_LINK_MODE_200000baseKR4_Full_BIT] = "200000basekr4-full", + [ETHTOOL_LINK_MODE_200000baseSR4_Full_BIT] = "200000basesr4-full", + [ETHTOOL_LINK_MODE_200000baseLR4_ER4_FR4_Full_BIT] = "200000baselr4-er4-fr4-full", + [ETHTOOL_LINK_MODE_200000baseDR4_Full_BIT] = "200000basedr4-full", + [ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT] = "200000basecr4-full", + [ETHTOOL_LINK_MODE_100baseT1_Full_BIT] = "100baset1-full", + [ETHTOOL_LINK_MODE_1000baseT1_Full_BIT] = "1000baset1-full", + [ETHTOOL_LINK_MODE_400000baseKR8_Full_BIT] = "400000basekr8-full", + [ETHTOOL_LINK_MODE_400000baseSR8_Full_BIT] = "400000basesr8-full", + [ETHTOOL_LINK_MODE_400000baseLR8_ER8_FR8_Full_BIT] = "400000baselr8-er8-fr8-full", + [ETHTOOL_LINK_MODE_400000baseDR8_Full_BIT] = "400000basedr8-full", + [ETHTOOL_LINK_MODE_400000baseCR8_Full_BIT] = "400000basecr8-full", + [ETHTOOL_LINK_MODE_FEC_LLRS_BIT] = "fec-llrs", + [ETHTOOL_LINK_MODE_100000baseKR_Full_BIT] = "100000basekr-full", + [ETHTOOL_LINK_MODE_100000baseSR_Full_BIT] = "100000basesr-full", + [ETHTOOL_LINK_MODE_100000baseLR_ER_FR_Full_BIT] = "100000baselr-er-fr-full", + [ETHTOOL_LINK_MODE_100000baseCR_Full_BIT] = "100000basecr-full", + [ETHTOOL_LINK_MODE_100000baseDR_Full_BIT] = "100000basedr-full", + [ETHTOOL_LINK_MODE_200000baseKR2_Full_BIT] = "200000basekr2-full", + [ETHTOOL_LINK_MODE_200000baseSR2_Full_BIT] = "200000basesr2-full", + [ETHTOOL_LINK_MODE_200000baseLR2_ER2_FR2_Full_BIT] = "200000baselr2-er2-fr2-full", + [ETHTOOL_LINK_MODE_200000baseDR2_Full_BIT] = "200000basedr2-full", + [ETHTOOL_LINK_MODE_200000baseCR2_Full_BIT] = "200000basecr2-full", + [ETHTOOL_LINK_MODE_400000baseKR4_Full_BIT] = "400000basekr4-full", + [ETHTOOL_LINK_MODE_400000baseSR4_Full_BIT] = "400000basesr4-full", + [ETHTOOL_LINK_MODE_400000baseLR4_ER4_FR4_Full_BIT] = "400000baselr4-er4-fr4-full", + [ETHTOOL_LINK_MODE_400000baseDR4_Full_BIT] = "400000basedr4-full", + [ETHTOOL_LINK_MODE_400000baseCR4_Full_BIT] = "400000basecr4-full", +}; +/* Make sure the array is large enough to fit all bits */ +assert_cc((ELEMENTSOF(ethtool_link_mode_bit_table)-1) / 32 < N_ADVERTISE); + +DEFINE_STRING_TABLE_LOOKUP(ethtool_link_mode_bit, enum ethtool_link_mode_bit_indices); + +static int ethtool_connect_or_warn(int *ret, bool warn) { + int fd; + + assert_return(ret, -EINVAL); + + fd = socket_ioctl_fd(); + if (fd < 0) + return log_full_errno(warn ? LOG_WARNING: LOG_DEBUG, fd, + "ethtool: could not create control socket: %m"); + + *ret = fd; + + return 0; +} + +int ethtool_get_driver(int *ethtool_fd, const char *ifname, char **ret) { + struct ethtool_drvinfo ecmd = { + .cmd = ETHTOOL_GDRVINFO, + }; + struct ifreq ifr = { + .ifr_data = (void*) &ecmd, + }; + char *d; + int r; + + assert(ethtool_fd); + assert(ifname); + assert(ret); + + if (*ethtool_fd < 0) { + r = ethtool_connect_or_warn(ethtool_fd, true); + if (r < 0) + return r; + } + + strscpy(ifr.ifr_name, IFNAMSIZ, ifname); + + r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + + if (isempty(ecmd.driver)) + return -ENODATA; + + d = strdup(ecmd.driver); + if (!d) + return -ENOMEM; + + *ret = d; + return 0; +} + +int ethtool_get_link_info( + int *ethtool_fd, + const char *ifname, + int *ret_autonegotiation, + uint64_t *ret_speed, + Duplex *ret_duplex, + NetDevPort *ret_port) { + + struct ethtool_cmd ecmd = { + .cmd = ETHTOOL_GSET, + }; + struct ifreq ifr = { + .ifr_data = (void*) &ecmd, + }; + int r; + + assert(ethtool_fd); + assert(ifname); + + if (*ethtool_fd < 0) { + r = ethtool_connect_or_warn(ethtool_fd, false); + if (r < 0) + return r; + } + + strscpy(ifr.ifr_name, IFNAMSIZ, ifname); + + r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + + if (ret_autonegotiation) + *ret_autonegotiation = ecmd.autoneg; + + if (ret_speed) { + uint32_t speed; + + speed = ethtool_cmd_speed(&ecmd); + *ret_speed = speed == (uint32_t) SPEED_UNKNOWN ? + UINT64_MAX : (uint64_t) speed * 1000 * 1000; + } + + if (ret_duplex) + *ret_duplex = ecmd.duplex; + + if (ret_port) + *ret_port = ecmd.port; + + return 0; +} + +int ethtool_get_permanent_macaddr(int *ethtool_fd, const char *ifname, struct ether_addr *ret) { + _cleanup_close_ int fd = -1; + struct { + struct ethtool_perm_addr addr; + uint8_t space[MAX_ADDR_LEN]; + } epaddr = { + .addr.cmd = ETHTOOL_GPERMADDR, + .addr.size = MAX_ADDR_LEN, + }; + struct ifreq ifr = { + .ifr_data = (caddr_t) &epaddr, + }; + int r; + + assert(ifname); + assert(ret); + + if (!ethtool_fd) + ethtool_fd = &fd; + + if (*ethtool_fd < 0) { + r = ethtool_connect_or_warn(ethtool_fd, false); + if (r < 0) + return r; + } + + strscpy(ifr.ifr_name, IFNAMSIZ, ifname); + + r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + + if (epaddr.addr.size != 6) + return -EOPNOTSUPP; + +#pragma GCC diagnostic push +#if HAVE_ZERO_LENGTH_BOUNDS +# pragma GCC diagnostic ignored "-Wzero-length-bounds" +#endif + for (size_t i = 0; i < epaddr.addr.size; i++) + ret->ether_addr_octet[i] = epaddr.addr.data[i]; +#pragma GCC diagnostic pop + + return 0; +} + +int ethtool_set_speed(int *ethtool_fd, const char *ifname, unsigned speed, Duplex duplex) { + struct ethtool_cmd ecmd = { + .cmd = ETHTOOL_GSET, + }; + struct ifreq ifr = { + .ifr_data = (void*) &ecmd, + }; + bool need_update = false; + int r; + + assert(ethtool_fd); + assert(ifname); + + if (speed == 0 && duplex == _DUP_INVALID) + return 0; + + if (*ethtool_fd < 0) { + r = ethtool_connect_or_warn(ethtool_fd, true); + if (r < 0) + return r; + } + + strscpy(ifr.ifr_name, IFNAMSIZ, ifname); + + r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + + if (ethtool_cmd_speed(&ecmd) != speed) { + ethtool_cmd_speed_set(&ecmd, speed); + need_update = true; + } + + switch (duplex) { + case DUP_HALF: + if (ecmd.duplex != DUPLEX_HALF) { + ecmd.duplex = DUPLEX_HALF; + need_update = true; + } + break; + case DUP_FULL: + if (ecmd.duplex != DUPLEX_FULL) { + ecmd.duplex = DUPLEX_FULL; + need_update = true; + } + break; + default: + break; + } + + if (need_update) { + ecmd.cmd = ETHTOOL_SSET; + + r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + } + + return 0; +} + +int ethtool_set_wol(int *ethtool_fd, const char *ifname, WakeOnLan wol) { + struct ethtool_wolinfo ecmd = { + .cmd = ETHTOOL_GWOL, + }; + struct ifreq ifr = { + .ifr_data = (void*) &ecmd, + }; + bool need_update = false; + int r; + + assert(ethtool_fd); + assert(ifname); + + if (wol == _WOL_INVALID) + return 0; + + if (*ethtool_fd < 0) { + r = ethtool_connect_or_warn(ethtool_fd, true); + if (r < 0) + return r; + } + + strscpy(ifr.ifr_name, IFNAMSIZ, ifname); + + r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + + switch (wol) { + case WOL_PHY: + if (ecmd.wolopts != WAKE_PHY) { + ecmd.wolopts = WAKE_PHY; + need_update = true; + } + break; + case WOL_UCAST: + if (ecmd.wolopts != WAKE_UCAST) { + ecmd.wolopts = WAKE_UCAST; + need_update = true; + } + break; + case WOL_MCAST: + if (ecmd.wolopts != WAKE_MCAST) { + ecmd.wolopts = WAKE_MCAST; + need_update = true; + } + break; + case WOL_BCAST: + if (ecmd.wolopts != WAKE_BCAST) { + ecmd.wolopts = WAKE_BCAST; + need_update = true; + } + break; + case WOL_ARP: + if (ecmd.wolopts != WAKE_ARP) { + ecmd.wolopts = WAKE_ARP; + need_update = true; + } + break; + case WOL_MAGIC: + if (ecmd.wolopts != WAKE_MAGIC) { + ecmd.wolopts = WAKE_MAGIC; + need_update = true; + } + break; + case WOL_MAGICSECURE: + if (ecmd.wolopts != WAKE_MAGICSECURE) { + ecmd.wolopts = WAKE_MAGICSECURE; + need_update = true; + } + break; + case WOL_OFF: + if (ecmd.wolopts != 0) { + ecmd.wolopts = 0; + need_update = true; + } + break; + default: + break; + } + + if (need_update) { + ecmd.cmd = ETHTOOL_SWOL; + + r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + } + + return 0; +} + +int ethtool_set_nic_buffer_size(int *ethtool_fd, const char *ifname, const netdev_ring_param *ring) { + struct ethtool_ringparam ecmd = { + .cmd = ETHTOOL_GRINGPARAM, + }; + struct ifreq ifr = { + .ifr_data = (void*) &ecmd, + }; + bool need_update = false; + int r; + + assert(ethtool_fd); + assert(ifname); + assert(ring); + + if (*ethtool_fd < 0) { + r = ethtool_connect_or_warn(ethtool_fd, true); + if (r < 0) + return r; + } + + strscpy(ifr.ifr_name, IFNAMSIZ, ifname); + + r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + + if (ring->rx_pending_set && ecmd.rx_pending != ring->rx_pending) { + ecmd.rx_pending = ring->rx_pending; + need_update = true; + } + + if (ring->rx_mini_pending_set && ecmd.rx_mini_pending != ring->rx_mini_pending) { + ecmd.rx_mini_pending = ring->rx_mini_pending; + need_update = true; + } + + if (ring->rx_jumbo_pending_set && ecmd.rx_jumbo_pending != ring->rx_jumbo_pending) { + ecmd.rx_jumbo_pending = ring->rx_jumbo_pending; + need_update = true; + } + + if (ring->tx_pending_set && ecmd.tx_pending != ring->tx_pending) { + ecmd.tx_pending = ring->tx_pending; + need_update = true; + } + + if (need_update) { + ecmd.cmd = ETHTOOL_SRINGPARAM; + + r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + } + + return 0; +} + +static int get_stringset(int ethtool_fd, struct ifreq *ifr, int stringset_id, struct ethtool_gstrings **ret) { + _cleanup_free_ struct ethtool_gstrings *strings = NULL; + struct { + struct ethtool_sset_info info; + uint32_t space; + } buffer = { + .info = { + .cmd = ETHTOOL_GSSET_INFO, + .sset_mask = UINT64_C(1) << stringset_id, + }, + }; + unsigned len; + int r; + + assert(ethtool_fd >= 0); + assert(ifr); + assert(ret); + + ifr->ifr_data = (void *) &buffer.info; + + r = ioctl(ethtool_fd, SIOCETHTOOL, ifr); + if (r < 0) + return -errno; + + if (!buffer.info.sset_mask) + return -EINVAL; + +#pragma GCC diagnostic push +#if HAVE_ZERO_LENGTH_BOUNDS +# pragma GCC diagnostic ignored "-Wzero-length-bounds" +#endif + len = buffer.info.data[0]; +#pragma GCC diagnostic pop + + strings = malloc0(sizeof(struct ethtool_gstrings) + len * ETH_GSTRING_LEN); + if (!strings) + return -ENOMEM; + + strings->cmd = ETHTOOL_GSTRINGS; + strings->string_set = stringset_id; + strings->len = len; + + ifr->ifr_data = (void *) strings; + + r = ioctl(ethtool_fd, SIOCETHTOOL, ifr); + if (r < 0) + return -errno; + + *ret = TAKE_PTR(strings); + + return 0; +} + +static int set_features_bit( + const struct ethtool_gstrings *strings, + const char *feature, + bool flag, + struct ethtool_sfeatures *sfeatures) { + bool found = false; + + assert(strings); + assert(feature); + assert(sfeatures); + + for (size_t i = 0; i < strings->len; i++) + if (streq((char *) &strings->data[i * ETH_GSTRING_LEN], feature) || + (endswith(feature, "-") && startswith((char *) &strings->data[i * ETH_GSTRING_LEN], feature))) { + size_t block, bit; + + block = i / 32; + bit = i % 32; + + sfeatures->features[block].valid |= 1 << bit; + SET_FLAG(sfeatures->features[block].requested, 1 << bit, flag); + found = true; + } + + return found ? 0 : -ENODATA; +} + +int ethtool_set_features(int *ethtool_fd, const char *ifname, const int *features) { + _cleanup_free_ struct ethtool_gstrings *strings = NULL; + struct ethtool_sfeatures *sfeatures; + struct ifreq ifr = {}; + int i, r; + + assert(ethtool_fd); + assert(ifname); + assert(features); + + if (*ethtool_fd < 0) { + r = ethtool_connect_or_warn(ethtool_fd, true); + if (r < 0) + return r; + } + + strscpy(ifr.ifr_name, IFNAMSIZ, ifname); + + r = get_stringset(*ethtool_fd, &ifr, ETH_SS_FEATURES, &strings); + if (r < 0) + return log_warning_errno(r, "ethtool: could not get ethtool features for %s", ifname); + + sfeatures = alloca0(sizeof(struct ethtool_sfeatures) + DIV_ROUND_UP(strings->len, 32U) * sizeof(sfeatures->features[0])); + sfeatures->cmd = ETHTOOL_SFEATURES; + sfeatures->size = DIV_ROUND_UP(strings->len, 32U); + + for (i = 0; i < _NET_DEV_FEAT_MAX; i++) + if (features[i] != -1) { + r = set_features_bit(strings, netdev_feature_table[i], features[i], sfeatures); + if (r < 0) { + log_warning_errno(r, "ethtool: could not find feature, ignoring: %s", netdev_feature_table[i]); + continue; + } + } + + ifr.ifr_data = (void *) sfeatures; + + r = ioctl(*ethtool_fd, SIOCETHTOOL, &ifr); + if (r < 0) + return log_warning_errno(r, "ethtool: could not set ethtool features for %s", ifname); + + return 0; +} + +static int get_glinksettings(int fd, struct ifreq *ifr, struct ethtool_link_usettings **ret) { + struct ecmd { + struct ethtool_link_settings req; + __u32 link_mode_data[3 * ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32]; + } ecmd = { + .req.cmd = ETHTOOL_GLINKSETTINGS, + }; + struct ethtool_link_usettings *u; + unsigned offset; + int r; + + assert(fd >= 0); + assert(ifr); + assert(ret); + + /* The interaction user/kernel via the new API requires a small ETHTOOL_GLINKSETTINGS + handshake first to agree on the length of the link mode bitmaps. If kernel doesn't + agree with user, it returns the bitmap length it is expecting from user as a negative + length (and cmd field is 0). When kernel and user agree, kernel returns valid info in + all fields (ie. link mode length > 0 and cmd is ETHTOOL_GLINKSETTINGS). Based on + https://github.com/torvalds/linux/commit/3f1ac7a700d039c61d8d8b99f28d605d489a60cf + */ + + ifr->ifr_data = (void *) &ecmd; + + r = ioctl(fd, SIOCETHTOOL, ifr); + if (r < 0) + return -errno; + + if (ecmd.req.link_mode_masks_nwords >= 0 || ecmd.req.cmd != ETHTOOL_GLINKSETTINGS) + return -EOPNOTSUPP; + + ecmd.req.link_mode_masks_nwords = -ecmd.req.link_mode_masks_nwords; + + ifr->ifr_data = (void *) &ecmd; + + r = ioctl(fd, SIOCETHTOOL, ifr); + if (r < 0) + return -errno; + + if (ecmd.req.link_mode_masks_nwords <= 0 || ecmd.req.cmd != ETHTOOL_GLINKSETTINGS) + return -EOPNOTSUPP; + + u = new(struct ethtool_link_usettings, 1); + if (!u) + return -ENOMEM; + + *u = (struct ethtool_link_usettings) { + .base = ecmd.req, + }; + + offset = 0; + memcpy(u->link_modes.supported, &ecmd.link_mode_data[offset], 4 * ecmd.req.link_mode_masks_nwords); + + offset += ecmd.req.link_mode_masks_nwords; + memcpy(u->link_modes.advertising, &ecmd.link_mode_data[offset], 4 * ecmd.req.link_mode_masks_nwords); + + offset += ecmd.req.link_mode_masks_nwords; + memcpy(u->link_modes.lp_advertising, &ecmd.link_mode_data[offset], 4 * ecmd.req.link_mode_masks_nwords); + + *ret = u; + + return 0; +} + +static int get_gset(int fd, struct ifreq *ifr, struct ethtool_link_usettings **ret) { + struct ethtool_link_usettings *e; + struct ethtool_cmd ecmd = { + .cmd = ETHTOOL_GSET, + }; + int r; + + assert(fd >= 0); + assert(ifr); + assert(ret); + + ifr->ifr_data = (void *) &ecmd; + + r = ioctl(fd, SIOCETHTOOL, ifr); + if (r < 0) + return -errno; + + e = new(struct ethtool_link_usettings, 1); + if (!e) + return -ENOMEM; + + *e = (struct ethtool_link_usettings) { + .base.cmd = ETHTOOL_GSET, + .base.link_mode_masks_nwords = 1, + .base.speed = ethtool_cmd_speed(&ecmd), + .base.duplex = ecmd.duplex, + .base.port = ecmd.port, + .base.phy_address = ecmd.phy_address, + .base.autoneg = ecmd.autoneg, + .base.mdio_support = ecmd.mdio_support, + + .link_modes.supported[0] = ecmd.supported, + .link_modes.advertising[0] = ecmd.advertising, + .link_modes.lp_advertising[0] = ecmd.lp_advertising, + }; + + *ret = e; + + return 0; +} + +static int set_slinksettings(int fd, struct ifreq *ifr, const struct ethtool_link_usettings *u) { + struct { + struct ethtool_link_settings req; + __u32 link_mode_data[3 * ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32]; + } ecmd = {}; + unsigned offset; + int r; + + assert(fd >= 0); + assert(ifr); + assert(u); + + if (u->base.cmd != ETHTOOL_GLINKSETTINGS || u->base.link_mode_masks_nwords <= 0) + return -EINVAL; + + ecmd.req = u->base; + ecmd.req.cmd = ETHTOOL_SLINKSETTINGS; + offset = 0; + memcpy(&ecmd.link_mode_data[offset], u->link_modes.supported, 4 * ecmd.req.link_mode_masks_nwords); + + offset += ecmd.req.link_mode_masks_nwords; + memcpy(&ecmd.link_mode_data[offset], u->link_modes.advertising, 4 * ecmd.req.link_mode_masks_nwords); + + offset += ecmd.req.link_mode_masks_nwords; + memcpy(&ecmd.link_mode_data[offset], u->link_modes.lp_advertising, 4 * ecmd.req.link_mode_masks_nwords); + + ifr->ifr_data = (void *) &ecmd; + + r = ioctl(fd, SIOCETHTOOL, ifr); + if (r < 0) + return -errno; + + return 0; +} + +static int set_sset(int fd, struct ifreq *ifr, const struct ethtool_link_usettings *u) { + struct ethtool_cmd ecmd = { + .cmd = ETHTOOL_SSET, + }; + int r; + + assert(fd >= 0); + assert(ifr); + assert(u); + + if (u->base.cmd != ETHTOOL_GSET || u->base.link_mode_masks_nwords <= 0) + return -EINVAL; + + ecmd.supported = u->link_modes.supported[0]; + ecmd.advertising = u->link_modes.advertising[0]; + ecmd.lp_advertising = u->link_modes.lp_advertising[0]; + + ethtool_cmd_speed_set(&ecmd, u->base.speed); + + ecmd.duplex = u->base.duplex; + ecmd.port = u->base.port; + ecmd.phy_address = u->base.phy_address; + ecmd.autoneg = u->base.autoneg; + ecmd.mdio_support = u->base.mdio_support; + ecmd.eth_tp_mdix = u->base.eth_tp_mdix; + ecmd.eth_tp_mdix_ctrl = u->base.eth_tp_mdix_ctrl; + + ifr->ifr_data = (void *) &ecmd; + + r = ioctl(fd, SIOCETHTOOL, ifr); + if (r < 0) + return -errno; + + return 0; +} + +/* If autonegotiation is disabled, the speed and duplex represent the fixed link + * mode and are writable if the driver supports multiple link modes. If it is + * enabled then they are read-only. If the link is up they represent the negotiated + * link mode; if the link is down, the speed is 0, %SPEED_UNKNOWN or the highest + * enabled speed and @duplex is %DUPLEX_UNKNOWN or the best enabled duplex mode. + */ +int ethtool_set_glinksettings( + int *fd, + const char *ifname, + int autonegotiation, + const uint32_t advertise[static N_ADVERTISE], + uint64_t speed, + Duplex duplex, + NetDevPort port) { + + _cleanup_free_ struct ethtool_link_usettings *u = NULL; + struct ifreq ifr = {}; + int r; + + assert(fd); + assert(ifname); + assert(advertise); + + if (autonegotiation != AUTONEG_DISABLE && memeqzero(advertise, sizeof(uint32_t) * N_ADVERTISE)) { + log_info("ethtool: autonegotiation is unset or enabled, the speed and duplex are not writable."); + return 0; + } + + if (*fd < 0) { + r = ethtool_connect_or_warn(fd, true); + if (r < 0) + return r; + } + + strscpy(ifr.ifr_name, IFNAMSIZ, ifname); + + r = get_glinksettings(*fd, &ifr, &u); + if (r < 0) { + r = get_gset(*fd, &ifr, &u); + if (r < 0) + return log_warning_errno(r, "ethtool: Cannot get device settings for %s : %m", ifname); + } + + if (speed > 0) + u->base.speed = DIV_ROUND_UP(speed, 1000000); + + if (duplex != _DUP_INVALID) + u->base.duplex = duplex; + + if (port != _NET_DEV_PORT_INVALID) + u->base.port = port; + + if (autonegotiation >= 0) + u->base.autoneg = autonegotiation; + + if (!memeqzero(advertise, sizeof(uint32_t) * N_ADVERTISE)) { + u->base.autoneg = AUTONEG_ENABLE; + memcpy(&u->link_modes.advertising, advertise, sizeof(uint32_t) * N_ADVERTISE); + memzero((uint8_t*) &u->link_modes.advertising + sizeof(uint32_t) * N_ADVERTISE, + ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NBYTES - sizeof(uint32_t) * N_ADVERTISE); + } + + if (u->base.cmd == ETHTOOL_GLINKSETTINGS) + r = set_slinksettings(*fd, &ifr, u); + else + r = set_sset(*fd, &ifr, u); + if (r < 0) + return log_warning_errno(r, "ethtool: Cannot set device settings for %s: %m", ifname); + + return r; +} + +int ethtool_set_channels(int *fd, const char *ifname, const netdev_channels *channels) { + struct ethtool_channels ecmd = { + .cmd = ETHTOOL_GCHANNELS, + }; + struct ifreq ifr = { + .ifr_data = (void*) &ecmd, + }; + bool need_update = false; + int r; + + assert(fd); + assert(ifname); + assert(channels); + + if (*fd < 0) { + r = ethtool_connect_or_warn(fd, true); + if (r < 0) + return r; + } + + strscpy(ifr.ifr_name, IFNAMSIZ, ifname); + + r = ioctl(*fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + + if (channels->rx_count_set && ecmd.rx_count != channels->rx_count) { + ecmd.rx_count = channels->rx_count; + need_update = true; + } + + if (channels->tx_count_set && ecmd.tx_count != channels->tx_count) { + ecmd.tx_count = channels->tx_count; + need_update = true; + } + + if (channels->other_count_set && ecmd.other_count != channels->other_count) { + ecmd.other_count = channels->other_count; + need_update = true; + } + + if (channels->combined_count_set && ecmd.combined_count != channels->combined_count) { + ecmd.combined_count = channels->combined_count; + need_update = true; + } + + if (need_update) { + ecmd.cmd = ETHTOOL_SCHANNELS; + + r = ioctl(*fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + } + + return 0; +} + +int ethtool_set_flow_control(int *fd, const char *ifname, int rx, int tx, int autoneg) { + struct ethtool_pauseparam ecmd = { + .cmd = ETHTOOL_GPAUSEPARAM, + }; + struct ifreq ifr = { + .ifr_data = (void*) &ecmd, + }; + bool need_update = false; + int r; + + assert(fd); + assert(ifname); + + if (*fd < 0) { + r = ethtool_connect_or_warn(fd, true); + if (r < 0) + return r; + } + + strscpy(ifr.ifr_name, IFNAMSIZ, ifname); + + r = ioctl(*fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + + if (rx >= 0 && ecmd.rx_pause != (uint32_t) rx) { + ecmd.rx_pause = rx; + need_update = true; + } + + if (tx >= 0 && ecmd.tx_pause != (uint32_t) tx) { + ecmd.tx_pause = tx; + need_update = true; + } + + if (autoneg >= 0 && ecmd.autoneg != (uint32_t) autoneg) { + ecmd.autoneg = autoneg; + need_update = true; + } + + if (need_update) { + ecmd.cmd = ETHTOOL_SPAUSEPARAM; + + r = ioctl(*fd, SIOCETHTOOL, &ifr); + if (r < 0) + return -errno; + } + + return 0; +} + +int config_parse_channel(const char *unit, + const char *filename, + unsigned line, + const char *section, + unsigned section_line, + const char *lvalue, + int ltype, + const char *rvalue, + void *data, + void *userdata) { + netdev_channels *channels = data; + uint32_t k; + int r; + + assert(filename); + assert(section); + assert(lvalue); + assert(rvalue); + assert(data); + + r = safe_atou32(rvalue, &k); + if (r < 0) { + log_syntax(unit, LOG_WARNING, filename, line, r, + "Failed to parse channel value for %s=, ignoring: %s", lvalue, rvalue); + return 0; + } + if (k < 1) { + log_syntax(unit, LOG_WARNING, filename, line, 0, + "Invalid %s= value, ignoring: %s", lvalue, rvalue); + return 0; + } + + if (streq(lvalue, "RxChannels")) { + channels->rx_count = k; + channels->rx_count_set = true; + } else if (streq(lvalue, "TxChannels")) { + channels->tx_count = k; + channels->tx_count_set = true; + } else if (streq(lvalue, "OtherChannels")) { + channels->other_count = k; + channels->other_count_set = true; + } else if (streq(lvalue, "CombinedChannels")) { + channels->combined_count = k; + channels->combined_count_set = true; + } + + return 0; +} + +int config_parse_advertise(const char *unit, + const char *filename, + unsigned line, + const char *section, + unsigned section_line, + const char *lvalue, + int ltype, + const char *rvalue, + void *data, + void *userdata) { + uint32_t *advertise = data; + const char *p; + int r; + + assert(filename); + assert(section); + assert(lvalue); + assert(rvalue); + assert(data); + + if (isempty(rvalue)) { + /* Empty string resets the value. */ + memzero(advertise, sizeof(uint32_t) * N_ADVERTISE); + return 0; + } + + for (p = rvalue;;) { + _cleanup_free_ char *w = NULL; + enum ethtool_link_mode_bit_indices mode; + + r = extract_first_word(&p, &w, NULL, 0); + if (r == -ENOMEM) + return log_oom(); + if (r < 0) { + log_syntax(unit, LOG_WARNING, filename, line, r, + "Failed to split advertise modes '%s', ignoring assignment: %m", rvalue); + return 0; + } + if (r == 0) + return 0; + + mode = ethtool_link_mode_bit_from_string(w); + /* We reuse the kernel provided enum which does not contain negative value. So, the cast + * below is mandatory. Otherwise, the check below always passes and access an invalid address. */ + if ((int) mode < 0) { + log_syntax(unit, LOG_WARNING, filename, line, 0, + "Failed to parse advertise mode, ignoring: %s", w); + continue; + } + + advertise[mode / 32] |= 1UL << (mode % 32); + } +} + +int config_parse_nic_buffer_size(const char *unit, + const char *filename, + unsigned line, + const char *section, + unsigned section_line, + const char *lvalue, + int ltype, + const char *rvalue, + void *data, + void *userdata) { + netdev_ring_param *ring = data; + uint32_t k; + int r; + + assert(filename); + assert(section); + assert(lvalue); + assert(rvalue); + assert(data); + + r = safe_atou32(rvalue, &k); + if (r < 0) { + log_syntax(unit, LOG_WARNING, filename, line, r, + "Failed to parse interface buffer value, ignoring: %s", rvalue); + return 0; + } + if (k < 1) { + log_syntax(unit, LOG_WARNING, filename, line, 0, + "Invalid %s= value, ignoring: %s", lvalue, rvalue); + return 0; + } + + if (streq(lvalue, "RxBufferSize")) { + ring->rx_pending = k; + ring->rx_pending_set = true; + } else if (streq(lvalue, "RxMiniBufferSize")) { + ring->rx_mini_pending = k; + ring->rx_mini_pending_set = true; + } else if (streq(lvalue, "RxJumboBufferSize")) { + ring->rx_jumbo_pending = k; + ring->rx_jumbo_pending_set = true; + } else if (streq(lvalue, "TxBufferSize")) { + ring->tx_pending = k; + ring->tx_pending_set = true; + } + + return 0; +} |