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-rw-r--r--src/shared/ethtool-util.c1423
1 files changed, 1423 insertions, 0 deletions
diff --git a/src/shared/ethtool-util.c b/src/shared/ethtool-util.c
new file mode 100644
index 0000000..dce9e00
--- /dev/null
+++ b/src/shared/ethtool-util.c
@@ -0,0 +1,1423 @@
+/* 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 "strv.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 struct {
+ uint32_t opt;
+ const char *name;
+} wol_option_map[] = {
+ { WAKE_PHY, "phy" },
+ { WAKE_UCAST, "unicast", },
+ { WAKE_MCAST, "multicast", },
+ { WAKE_BCAST, "broadcast", },
+ { WAKE_ARP, "arp", },
+ { WAKE_MAGIC, "magic", },
+ { WAKE_MAGICSECURE, "secureon", },
+};
+
+int wol_options_to_string_alloc(uint32_t opts, char **ret) {
+ _cleanup_free_ char *str = NULL;
+
+ assert(ret);
+
+ if (opts == UINT32_MAX) {
+ *ret = NULL;
+ return 0;
+ }
+
+ for (size_t i = 0; i < ELEMENTSOF(wol_option_map); i++)
+ if (opts & wol_option_map[i].opt &&
+ !strextend_with_separator(&str, ",", wol_option_map[i].name))
+ return -ENOMEM;
+
+ if (!str) {
+ str = strdup("off");
+ if (!str)
+ return -ENOMEM;
+ }
+
+ *ret = TAKE_PTR(str);
+ return 1;
+}
+
+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 mdi_table[] = {
+ [ETH_TP_MDI_INVALID] = "unknown",
+ [ETH_TP_MDI] = "mdi",
+ [ETH_TP_MDI_X] = "mdi-x",
+ [ETH_TP_MDI_AUTO] = "auto",
+};
+
+DEFINE_STRING_TABLE_LOOKUP_TO_STRING(mdi, int);
+
+static const char* const netdev_feature_table[_NET_DEV_FEAT_MAX] = {
+ [NET_DEV_FEAT_SG] = "tx-scatter-gather",
+ [NET_DEV_FEAT_IP_CSUM] = "tx-checksum-ipv4",
+ [NET_DEV_FEAT_HW_CSUM] = "tx-checksum-ip-generic",
+ [NET_DEV_FEAT_IPV6_CSUM] = "tx-checksum-ipv6",
+ [NET_DEV_FEAT_HIGHDMA] = "highdma",
+ [NET_DEV_FEAT_FRAGLIST] = "tx-scatter-gather-fraglist",
+ [NET_DEV_FEAT_HW_VLAN_CTAG_TX] = "tx-vlan-hw-insert",
+ [NET_DEV_FEAT_HW_VLAN_CTAG_RX] = "rx-vlan-hw-parse",
+ [NET_DEV_FEAT_HW_VLAN_CTAG_FILTER] = "rx-vlan-filter",
+ [NET_DEV_FEAT_HW_VLAN_STAG_TX] = "tx-vlan-stag-hw-insert",
+ [NET_DEV_FEAT_HW_VLAN_STAG_RX] = "rx-vlan-stag-hw-parse",
+ [NET_DEV_FEAT_HW_VLAN_STAG_FILTER] = "rx-vlan-stag-filter",
+ [NET_DEV_FEAT_VLAN_CHALLENGED] = "vlan-challenged",
+ [NET_DEV_FEAT_GSO] = "tx-generic-segmentation",
+ [NET_DEV_FEAT_LLTX] = "tx-lockless",
+ [NET_DEV_FEAT_NETNS_LOCAL] = "netns-local",
+ [NET_DEV_FEAT_GRO] = "rx-gro",
+ [NET_DEV_FEAT_GRO_HW] = "rx-gro-hw",
+ [NET_DEV_FEAT_LRO] = "rx-lro",
+ [NET_DEV_FEAT_TSO] = "tx-tcp-segmentation",
+ [NET_DEV_FEAT_GSO_ROBUST] = "tx-gso-robust",
+ [NET_DEV_FEAT_TSO_ECN] = "tx-tcp-ecn-segmentation",
+ [NET_DEV_FEAT_TSO_MANGLEID] = "tx-tcp-mangleid-segmentation",
+ [NET_DEV_FEAT_TSO6] = "tx-tcp6-segmentation",
+ [NET_DEV_FEAT_FSO] = "tx-fcoe-segmentation",
+ [NET_DEV_FEAT_GSO_GRE] = "tx-gre-segmentation",
+ [NET_DEV_FEAT_GSO_GRE_CSUM] = "tx-gre-csum-segmentation",
+ [NET_DEV_FEAT_GSO_IPXIP4] = "tx-ipxip4-segmentation",
+ [NET_DEV_FEAT_GSO_IPXIP6] = "tx-ipxip6-segmentation",
+ [NET_DEV_FEAT_GSO_UDP_TUNNEL] = "tx-udp_tnl-segmentation",
+ [NET_DEV_FEAT_GSO_UDP_TUNNEL_CSUM] = "tx-udp_tnl-csum-segmentation",
+ [NET_DEV_FEAT_GSO_PARTIAL] = "tx-gso-partial",
+ [NET_DEV_FEAT_GSO_TUNNEL_REMCSUM] = "tx-tunnel-remcsum-segmentation",
+ [NET_DEV_FEAT_GSO_SCTP] = "tx-sctp-segmentation",
+ [NET_DEV_FEAT_GSO_ESP] = "tx-esp-segmentation",
+ [NET_DEV_FEAT_GSO_UDP_L4] = "tx-udp-segmentation",
+ [NET_DEV_FEAT_GSO_FRAGLIST] = "tx-gso-list",
+ [NET_DEV_FEAT_FCOE_CRC] = "tx-checksum-fcoe-crc",
+ [NET_DEV_FEAT_SCTP_CRC] = "tx-checksum-sctp",
+ [NET_DEV_FEAT_FCOE_MTU] = "fcoe-mtu",
+ [NET_DEV_FEAT_NTUPLE] = "rx-ntuple-filter",
+ [NET_DEV_FEAT_RXHASH] = "rx-hashing",
+ [NET_DEV_FEAT_RXCSUM] = "rx-checksum",
+ [NET_DEV_FEAT_NOCACHE_COPY] = "tx-nocache-copy",
+ [NET_DEV_FEAT_LOOPBACK] = "loopback",
+ [NET_DEV_FEAT_RXFCS] = "rx-fcs",
+ [NET_DEV_FEAT_RXALL] = "rx-all",
+ [NET_DEV_FEAT_HW_L2FW_DOFFLOAD] = "l2-fwd-offload",
+ [NET_DEV_FEAT_HW_TC] = "hw-tc-offload",
+ [NET_DEV_FEAT_HW_ESP] = "esp-hw-offload",
+ [NET_DEV_FEAT_HW_ESP_TX_CSUM] = "esp-tx-csum-hw-offload",
+ [NET_DEV_FEAT_RX_UDP_TUNNEL_PORT] = "rx-udp_tunnel-port-offload",
+ [NET_DEV_FEAT_HW_TLS_RECORD] = "tls-hw-record",
+ [NET_DEV_FEAT_HW_TLS_TX] = "tls-hw-tx-offload",
+ [NET_DEV_FEAT_HW_TLS_RX] = "tls-hw-rx-offload",
+ [NET_DEV_FEAT_GRO_FRAGLIST] = "rx-gro-list",
+ [NET_DEV_FEAT_HW_MACSEC] = "macsec-hw-offload",
+ [NET_DEV_FEAT_GRO_UDP_FWD] = "rx-udp-gro-forwarding",
+ [NET_DEV_FEAT_HW_HSR_TAG_INS] = "hsr-tag-ins-offload",
+ [NET_DEV_FEAT_HW_HSR_TAG_RM] = "hsr-tag-rm-offload",
+ [NET_DEV_FEAT_HW_HSR_FWD] = "hsr-fwd-offload",
+ [NET_DEV_FEAT_HW_HSR_DUP] = "hsr-dup-offload",
+
+ [NET_DEV_FEAT_TXCSUM] = "tx-checksum-", /* The suffix "-" means any feature beginning with "tx-checksum-" */
+};
+
+static const char* const ethtool_link_mode_bit_table[] = {
+# include "ethtool-link-mode.h"
+};
+/* 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(int *ethtool_fd) {
+ int fd;
+
+ assert(ethtool_fd);
+
+ /* This does nothing if already connected. */
+ if (*ethtool_fd >= 0)
+ return 0;
+
+ fd = socket_ioctl_fd();
+ if (fd < 0)
+ return log_debug_errno(fd, "ethtool: could not create control socket: %m");
+
+ *ethtool_fd = 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);
+
+ r = ethtool_connect(ethtool_fd);
+ if (r < 0)
+ return r;
+
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ if (ioctl(*ethtool_fd, SIOCETHTOOL, &ifr) < 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);
+
+ r = ethtool_connect(ethtool_fd);
+ if (r < 0)
+ return r;
+
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ if (ioctl(*ethtool_fd, SIOCETHTOOL, &ifr) < 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_hw_addr(int *ethtool_fd, const char *ifname, struct hw_addr_data *ret) {
+ _cleanup_close_ int fd = -EBADF;
+ struct {
+ struct ethtool_perm_addr addr;
+ uint8_t space[HW_ADDR_MAX_SIZE];
+ } epaddr = {
+ .addr.cmd = ETHTOOL_GPERMADDR,
+ .addr.size = HW_ADDR_MAX_SIZE,
+ };
+ struct ifreq ifr = {
+ .ifr_data = (caddr_t) &epaddr,
+ };
+ int r;
+
+ assert(ifname);
+ assert(ret);
+
+ if (!ethtool_fd)
+ ethtool_fd = &fd;
+ r = ethtool_connect(ethtool_fd);
+ if (r < 0)
+ return r;
+
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ if (ioctl(*ethtool_fd, SIOCETHTOOL, &ifr) < 0)
+ return -errno;
+
+ if (epaddr.addr.size == 0)
+ return -ENODATA;
+
+ if (epaddr.addr.size > HW_ADDR_MAX_SIZE)
+ return -EINVAL;
+
+ ret->length = epaddr.addr.size;
+ memcpy(ret->bytes, epaddr.addr.data, epaddr.addr.size);
+ return 0;
+}
+
+#define UPDATE(dest, val, updated) \
+ do { \
+ typeof(val) _v = (val); \
+ if (dest != _v) \
+ updated = true; \
+ dest = _v; \
+ } while (false)
+
+#define UPDATE_WITH_MAX(dest, max, val, updated) \
+ do { \
+ typeof(dest) _v = (val); \
+ typeof(dest) _max = (max); \
+ if (_v == 0 || _v > _max) \
+ _v = _max; \
+ if (dest != _v) \
+ updated = true; \
+ dest = _v; \
+ } while (false)
+
+int ethtool_set_wol(
+ int *ethtool_fd,
+ const char *ifname,
+ uint32_t wolopts,
+ const uint8_t password[SOPASS_MAX]) {
+
+ 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 (wolopts == UINT32_MAX && !password)
+ /* Nothing requested. Return earlier. */
+ return 0;
+
+ r = ethtool_connect(ethtool_fd);
+ if (r < 0)
+ return r;
+
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ CLEANUP_ERASE(ecmd);
+
+ if (ioctl(*ethtool_fd, SIOCETHTOOL, &ifr) < 0)
+ return -errno;
+
+ if (wolopts == UINT32_MAX) {
+ /* When password is specified without valid WoL options specified, then enable
+ * WAKE_MAGICSECURE flag if supported. */
+ wolopts = ecmd.wolopts;
+ if (password && FLAGS_SET(ecmd.supported, WAKE_MAGICSECURE))
+ wolopts |= WAKE_MAGICSECURE;
+ }
+
+ if ((wolopts & ~ecmd.supported) != 0) {
+ _cleanup_free_ char *str = NULL;
+
+ (void) wol_options_to_string_alloc(wolopts & ~ecmd.supported, &str);
+ log_debug("Network interface %s does not support requested Wake on LAN options \"%s\", ignoring.",
+ ifname, strna(str));
+
+ wolopts &= ecmd.supported;
+ }
+
+ if (!FLAGS_SET(wolopts, WAKE_MAGICSECURE))
+ /* When WAKE_MAGICSECURE flag is not set, then ignore password. */
+ password = NULL;
+
+ UPDATE(ecmd.wolopts, wolopts, need_update);
+ if (password &&
+ memcmp(ecmd.sopass, password, sizeof(ecmd.sopass)) != 0) {
+ memcpy(ecmd.sopass, password, sizeof(ecmd.sopass));
+ need_update = true;
+ }
+
+ if (!need_update)
+ return 0;
+
+ ecmd.cmd = ETHTOOL_SWOL;
+ return RET_NERRNO(ioctl(*ethtool_fd, SIOCETHTOOL, &ifr));
+}
+
+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 (!ring->rx.set &&
+ !ring->rx_mini.set &&
+ !ring->rx_jumbo.set &&
+ !ring->tx.set)
+ return 0;
+
+ r = ethtool_connect(ethtool_fd);
+ if (r < 0)
+ return r;
+
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ if (ioctl(*ethtool_fd, SIOCETHTOOL, &ifr) < 0)
+ return -errno;
+
+ if (ring->rx.set)
+ UPDATE_WITH_MAX(ecmd.rx_pending, ecmd.rx_max_pending, ring->rx.value, need_update);
+
+ if (ring->rx_mini.set)
+ UPDATE_WITH_MAX(ecmd.rx_mini_pending, ecmd.rx_mini_max_pending, ring->rx_mini.value, need_update);
+
+ if (ring->rx_jumbo.set)
+ UPDATE_WITH_MAX(ecmd.rx_jumbo_pending, ecmd.rx_jumbo_max_pending, ring->rx_jumbo.value, need_update);
+
+ if (ring->tx.set)
+ UPDATE_WITH_MAX(ecmd.tx_pending, ecmd.tx_max_pending, ring->tx.value, need_update);
+
+ if (!need_update)
+ return 0;
+
+ ecmd.cmd = ETHTOOL_SRINGPARAM;
+ return RET_NERRNO(ioctl(*ethtool_fd, SIOCETHTOOL, &ifr));
+}
+
+static int get_stringset(int ethtool_fd, const char *ifname, enum ethtool_stringset 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,
+ .info.sset_mask = UINT64_C(1) << stringset_id,
+ };
+ struct ifreq ifr = {
+ .ifr_data = (void*) &buffer,
+ };
+ uint32_t len;
+
+ assert(ethtool_fd >= 0);
+ assert(ifname);
+ assert(ret);
+
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ if (ioctl(ethtool_fd, SIOCETHTOOL, &ifr) < 0)
+ return -errno;
+
+ if (buffer.info.sset_mask == 0)
+ return -EOPNOTSUPP;
+
+#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
+ if (len == 0)
+ return -EOPNOTSUPP;
+
+ strings = malloc0(offsetof(struct ethtool_gstrings, data) + 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;
+
+ if (ioctl(ethtool_fd, SIOCETHTOOL, &ifr) < 0)
+ return -errno;
+
+ *ret = TAKE_PTR(strings);
+ return 0;
+}
+
+static int get_features(int ethtool_fd, const char *ifname, uint32_t n_features, struct ethtool_gfeatures **ret) {
+ _cleanup_free_ struct ethtool_gfeatures *gfeatures = NULL;
+ struct ifreq ifr;
+
+ assert(ethtool_fd >= 0);
+ assert(ifname);
+ assert(ret);
+ assert(n_features > 0);
+
+ gfeatures = malloc0(offsetof(struct ethtool_gfeatures, features) +
+ DIV_ROUND_UP(n_features, 32U) * sizeof(gfeatures->features[0]));
+ if (!gfeatures)
+ return -ENOMEM;
+
+ gfeatures->cmd = ETHTOOL_GFEATURES;
+ gfeatures->size = DIV_ROUND_UP(n_features, 32U);
+
+ ifr = (struct ifreq) {
+ .ifr_data = (void*) gfeatures,
+ };
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ if (ioctl(ethtool_fd, SIOCETHTOOL, &ifr) < 0)
+ return -errno;
+
+ *ret = TAKE_PTR(gfeatures);
+ return 0;
+}
+
+static int set_features_bit(
+ const struct ethtool_gstrings *strings,
+ const struct ethtool_gfeatures *gfeatures,
+ struct ethtool_sfeatures *sfeatures,
+ const char *feature,
+ int flag) {
+
+ assert(strings);
+ assert(gfeatures);
+ assert(sfeatures);
+ assert(feature);
+
+ if (flag < 0)
+ return 0;
+
+ for (uint32_t i = 0; i < strings->len; i++) {
+ uint32_t block, mask;
+
+ if (!strneq((const char*) &strings->data[i * ETH_GSTRING_LEN], feature, ETH_GSTRING_LEN))
+ continue;
+
+ block = i / 32;
+ mask = UINT32_C(1) << (i % 32);
+
+ if (!FLAGS_SET(gfeatures->features[block].available, mask) ||
+ FLAGS_SET(gfeatures->features[block].never_changed, mask))
+ return -EOPNOTSUPP;
+
+ sfeatures->features[block].valid |= mask;
+ SET_FLAG(sfeatures->features[block].requested, mask, flag);
+
+ return 0;
+ }
+
+ return -ENODATA;
+}
+
+static int set_features_multiple_bit(
+ const struct ethtool_gstrings *strings,
+ const struct ethtool_gfeatures *gfeatures,
+ struct ethtool_sfeatures *sfeatures,
+ const char *feature,
+ int flag) {
+
+ bool found = false;
+ int r = -ENODATA;
+
+ assert(strings);
+ assert(gfeatures);
+ assert(sfeatures);
+ assert(feature);
+
+ if (flag < 0)
+ return 0;
+
+ for (uint32_t i = 0; i < strings->len; i++) {
+ uint32_t block, mask;
+
+ if (!startswith((const char*) &strings->data[i * ETH_GSTRING_LEN], feature))
+ continue;
+
+ block = i / 32;
+ mask = UINT32_C(1) << (i % 32);
+
+ if (!FLAGS_SET(gfeatures->features[block].available, mask) ||
+ FLAGS_SET(gfeatures->features[block].never_changed, mask)) {
+ r = -EOPNOTSUPP;
+ continue;
+ }
+
+ /* The flags is explicitly set by set_features_bit() */
+ if (FLAGS_SET(sfeatures->features[block].valid, mask))
+ continue;
+
+ sfeatures->features[block].valid |= mask;
+ SET_FLAG(sfeatures->features[block].requested, mask, flag);
+
+ found = true;
+ }
+
+ return found ? 0 : r;
+}
+
+int ethtool_set_features(int *ethtool_fd, const char *ifname, const int features[static _NET_DEV_FEAT_MAX]) {
+ _cleanup_free_ struct ethtool_gstrings *strings = NULL;
+ _cleanup_free_ struct ethtool_gfeatures *gfeatures = NULL;
+ _cleanup_free_ struct ethtool_sfeatures *sfeatures = NULL;
+ struct ifreq ifr;
+ bool have = false;
+ int r;
+
+ assert(ethtool_fd);
+ assert(ifname);
+ assert(features);
+
+ for (size_t i = 0; i < _NET_DEV_FEAT_MAX; i++)
+ if (features[i] >= 0) {
+ have = true;
+ break;
+ }
+
+ if (!have)
+ return 0;
+
+ r = ethtool_connect(ethtool_fd);
+ if (r < 0)
+ return r;
+
+ r = get_stringset(*ethtool_fd, ifname, ETH_SS_FEATURES, &strings);
+ if (r < 0)
+ return log_debug_errno(r, "ethtool: could not get ethtool feature strings: %m");
+
+ r = get_features(*ethtool_fd, ifname, strings->len, &gfeatures);
+ if (r < 0)
+ return log_debug_errno(r, "ethtool: could not get ethtool features for %s: %m", ifname);
+
+ sfeatures = malloc0(offsetof(struct ethtool_sfeatures, features) +
+ DIV_ROUND_UP(strings->len, 32U) * sizeof(sfeatures->features[0]));
+ if (!sfeatures)
+ return log_oom_debug();
+
+ sfeatures->cmd = ETHTOOL_SFEATURES;
+ sfeatures->size = DIV_ROUND_UP(strings->len, 32U);
+
+ for (size_t i = 0; i < _NET_DEV_FEAT_SIMPLE_MAX; i++) {
+ r = set_features_bit(strings, gfeatures, sfeatures, netdev_feature_table[i], features[i]);
+ if (r < 0)
+ log_debug_errno(r, "ethtool: could not set feature %s for %s, ignoring: %m", netdev_feature_table[i], ifname);
+ }
+
+ for (size_t i = _NET_DEV_FEAT_SIMPLE_MAX; i < _NET_DEV_FEAT_MAX; i++) {
+ r = set_features_multiple_bit(strings, gfeatures, sfeatures, netdev_feature_table[i], features[i]);
+ if (r < 0)
+ log_debug_errno(r, "ethtool: could not set feature %s for %s, ignoring: %m", netdev_feature_table[i], ifname);
+ }
+
+ ifr = (struct ifreq) {
+ .ifr_data = (void*) sfeatures,
+ };
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ if (ioctl(*ethtool_fd, SIOCETHTOOL, &ifr) < 0)
+ return log_debug_errno(errno, "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;
+ uint32_t link_mode_data[3 * ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32];
+ } ecmd = {
+ .req.cmd = ETHTOOL_GLINKSETTINGS,
+ };
+ struct ethtool_link_usettings *u;
+ unsigned offset;
+
+ 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;
+
+ if (ioctl(fd, SIOCETHTOOL, ifr) < 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;
+
+ if (ioctl(fd, SIOCETHTOOL, ifr) < 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,
+ };
+
+ assert(fd >= 0);
+ assert(ifr);
+ assert(ret);
+
+ ifr->ifr_data = (void *) &ecmd;
+
+ if (ioctl(fd, SIOCETHTOOL, ifr) < 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,
+ .base.eth_tp_mdix = ecmd.eth_tp_mdix,
+ .base.eth_tp_mdix_ctrl = ecmd.eth_tp_mdix_ctrl,
+
+ .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;
+ uint32_t link_mode_data[3 * ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NU32];
+ } ecmd = {};
+ unsigned offset;
+
+ 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;
+
+ return RET_NERRNO(ioctl(fd, SIOCETHTOOL, ifr));
+}
+
+static int set_sset(int fd, struct ifreq *ifr, const struct ethtool_link_usettings *u) {
+ struct ethtool_cmd ecmd = {
+ .cmd = ETHTOOL_SSET,
+ };
+
+ 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;
+
+ return RET_NERRNO(ioctl(fd, SIOCETHTOOL, ifr));
+}
+
+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,
+ uint8_t mdi) {
+
+ _cleanup_free_ struct ethtool_link_usettings *u = NULL;
+ struct ifreq ifr = {};
+ bool changed = false;
+ int r;
+
+ assert(fd);
+ assert(ifname);
+ assert(advertise);
+
+ if (autonegotiation < 0 && memeqzero(advertise, sizeof(uint32_t) * N_ADVERTISE) &&
+ speed == 0 && duplex < 0 && port < 0 && mdi == ETH_TP_MDI_INVALID)
+ 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. */
+
+ if (speed > 0 || duplex >= 0 || port >= 0) {
+ if (autonegotiation == AUTONEG_ENABLE || !memeqzero(advertise, sizeof(uint32_t) * N_ADVERTISE)) {
+ log_debug("ethtool: autonegotiation is enabled, ignoring speed, duplex, or port settings.");
+ speed = 0;
+ duplex = _DUP_INVALID;
+ port = _NET_DEV_PORT_INVALID;
+ } else {
+ log_debug("ethtool: setting speed, duplex, or port, disabling autonegotiation.");
+ autonegotiation = AUTONEG_DISABLE;
+ }
+ }
+
+ r = ethtool_connect(fd);
+ if (r < 0)
+ return r;
+
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ r = get_glinksettings(*fd, &ifr, &u);
+ if (r < 0) {
+ r = get_gset(*fd, &ifr, &u);
+ if (r < 0)
+ return log_debug_errno(r, "ethtool: Cannot get device settings for %s: %m", ifname);
+ }
+
+ if (speed > 0)
+ UPDATE(u->base.speed, DIV_ROUND_UP(speed, 1000000), changed);
+
+ if (duplex >= 0)
+ UPDATE(u->base.duplex, duplex, changed);
+
+ if (port >= 0)
+ UPDATE(u->base.port, port, changed);
+
+ if (autonegotiation >= 0)
+ UPDATE(u->base.autoneg, autonegotiation, changed);
+
+ if (!memeqzero(advertise, sizeof(uint32_t) * N_ADVERTISE)) {
+ UPDATE(u->base.autoneg, AUTONEG_ENABLE, changed);
+
+ changed = changed ||
+ memcmp(&u->link_modes.advertising, advertise, sizeof(uint32_t) * N_ADVERTISE) != 0 ||
+ !memeqzero((uint8_t*) &u->link_modes.advertising + sizeof(uint32_t) * N_ADVERTISE,
+ ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NBYTES - sizeof(uint32_t) * N_ADVERTISE);
+ 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 (mdi != ETH_TP_MDI_INVALID) {
+ if (u->base.eth_tp_mdix_ctrl == ETH_TP_MDI_INVALID)
+ log_debug("ethtool: setting MDI not supported for %s, ignoring.", ifname);
+ else
+ UPDATE(u->base.eth_tp_mdix_ctrl, mdi, changed);
+ }
+
+ if (!changed)
+ return 0;
+
+ if (u->base.cmd == ETHTOOL_GLINKSETTINGS)
+ r = set_slinksettings(*fd, &ifr, u);
+ else
+ r = set_sset(*fd, &ifr, u);
+ if (r < 0)
+ return log_debug_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 (!channels->rx.set &&
+ !channels->tx.set &&
+ !channels->other.set &&
+ !channels->combined.set)
+ return 0;
+
+ r = ethtool_connect(fd);
+ if (r < 0)
+ return r;
+
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ if (ioctl(*fd, SIOCETHTOOL, &ifr) < 0)
+ return -errno;
+
+ if (channels->rx.set)
+ UPDATE_WITH_MAX(ecmd.rx_count, ecmd.max_rx, channels->rx.value, need_update);
+
+ if (channels->tx.set)
+ UPDATE_WITH_MAX(ecmd.tx_count, ecmd.max_tx, channels->tx.value, need_update);
+
+ if (channels->other.set)
+ UPDATE_WITH_MAX(ecmd.other_count, ecmd.max_other, channels->other.value, need_update);
+
+ if (channels->combined.set)
+ UPDATE_WITH_MAX(ecmd.combined_count, ecmd.max_combined, channels->combined.value, need_update);
+
+ if (!need_update)
+ return 0;
+
+ ecmd.cmd = ETHTOOL_SCHANNELS;
+ return RET_NERRNO(ioctl(*fd, SIOCETHTOOL, &ifr));
+}
+
+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 (rx < 0 && tx < 0 && autoneg < 0)
+ return 0;
+
+ r = ethtool_connect(fd);
+ if (r < 0)
+ return r;
+
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ if (ioctl(*fd, SIOCETHTOOL, &ifr) < 0)
+ return -errno;
+
+ if (rx >= 0)
+ UPDATE(ecmd.rx_pause, (uint32_t) rx, need_update);
+
+ if (tx >= 0)
+ UPDATE(ecmd.tx_pause, (uint32_t) tx, need_update);
+
+ if (autoneg >= 0)
+ UPDATE(ecmd.autoneg, (uint32_t) autoneg, need_update);
+
+ if (!need_update)
+ return 0;
+
+ ecmd.cmd = ETHTOOL_SPAUSEPARAM;
+ return RET_NERRNO(ioctl(*fd, SIOCETHTOOL, &ifr));
+}
+
+int ethtool_set_nic_coalesce_settings(int *ethtool_fd, const char *ifname, const netdev_coalesce_param *coalesce) {
+ struct ethtool_coalesce ecmd = {
+ .cmd = ETHTOOL_GCOALESCE,
+ };
+ struct ifreq ifr = {
+ .ifr_data = (void*) &ecmd,
+ };
+ bool need_update = false;
+ int r;
+
+ assert(ethtool_fd);
+ assert(ifname);
+ assert(coalesce);
+
+ if (coalesce->use_adaptive_rx_coalesce < 0 &&
+ coalesce->use_adaptive_tx_coalesce < 0 &&
+ !coalesce->rx_coalesce_usecs.set &&
+ !coalesce->rx_max_coalesced_frames.set &&
+ !coalesce->rx_coalesce_usecs_irq.set &&
+ !coalesce->rx_max_coalesced_frames_irq.set &&
+ !coalesce->tx_coalesce_usecs.set &&
+ !coalesce->tx_max_coalesced_frames.set &&
+ !coalesce->tx_coalesce_usecs_irq.set &&
+ !coalesce->tx_max_coalesced_frames_irq.set &&
+ !coalesce->stats_block_coalesce_usecs.set &&
+ !coalesce->pkt_rate_low.set &&
+ !coalesce->rx_coalesce_usecs_low.set &&
+ !coalesce->rx_max_coalesced_frames_low.set &&
+ !coalesce->tx_coalesce_usecs_low.set &&
+ !coalesce->tx_max_coalesced_frames_low.set &&
+ !coalesce->pkt_rate_high.set &&
+ !coalesce->rx_coalesce_usecs_high.set &&
+ !coalesce->rx_max_coalesced_frames_high.set &&
+ !coalesce->tx_coalesce_usecs_high.set &&
+ !coalesce->tx_max_coalesced_frames_high.set &&
+ !coalesce->rate_sample_interval.set)
+ return 0;
+
+ r = ethtool_connect(ethtool_fd);
+ if (r < 0)
+ return r;
+
+ strscpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
+
+ if (ioctl(*ethtool_fd, SIOCETHTOOL, &ifr) < 0)
+ return -errno;
+
+ if (coalesce->use_adaptive_rx_coalesce >= 0)
+ UPDATE(ecmd.use_adaptive_rx_coalesce, (uint32_t) coalesce->use_adaptive_rx_coalesce, need_update);
+
+ if (coalesce->use_adaptive_tx_coalesce >= 0)
+ UPDATE(ecmd.use_adaptive_tx_coalesce, (uint32_t) coalesce->use_adaptive_tx_coalesce, need_update);
+
+ if (coalesce->rx_coalesce_usecs.set)
+ UPDATE(ecmd.rx_coalesce_usecs, coalesce->rx_coalesce_usecs.value, need_update);
+
+ if (coalesce->rx_max_coalesced_frames.set)
+ UPDATE(ecmd.rx_max_coalesced_frames, coalesce->rx_max_coalesced_frames.value, need_update);
+
+ if (coalesce->rx_coalesce_usecs_irq.set)
+ UPDATE(ecmd.rx_coalesce_usecs_irq, coalesce->rx_coalesce_usecs_irq.value, need_update);
+
+ if (coalesce->rx_max_coalesced_frames_irq.set)
+ UPDATE(ecmd.rx_max_coalesced_frames_irq, coalesce->rx_max_coalesced_frames_irq.value, need_update);
+
+ if (coalesce->tx_coalesce_usecs.set)
+ UPDATE(ecmd.tx_coalesce_usecs, coalesce->tx_coalesce_usecs.value, need_update);
+
+ if (coalesce->tx_max_coalesced_frames.set)
+ UPDATE(ecmd.tx_max_coalesced_frames, coalesce->tx_max_coalesced_frames.value, need_update);
+
+ if (coalesce->tx_coalesce_usecs_irq.set)
+ UPDATE(ecmd.tx_coalesce_usecs_irq, coalesce->tx_coalesce_usecs_irq.value, need_update);
+
+ if (coalesce->tx_max_coalesced_frames_irq.set)
+ UPDATE(ecmd.tx_max_coalesced_frames_irq, coalesce->tx_max_coalesced_frames_irq.value, need_update);
+
+ if (coalesce->stats_block_coalesce_usecs.set)
+ UPDATE(ecmd.stats_block_coalesce_usecs, coalesce->stats_block_coalesce_usecs.value, need_update);
+
+ if (coalesce->pkt_rate_low.set)
+ UPDATE(ecmd.pkt_rate_low, coalesce->pkt_rate_low.value, need_update);
+
+ if (coalesce->rx_coalesce_usecs_low.set)
+ UPDATE(ecmd.rx_coalesce_usecs_low, coalesce->rx_coalesce_usecs_low.value, need_update);
+
+ if (coalesce->rx_max_coalesced_frames_low.set)
+ UPDATE(ecmd.rx_max_coalesced_frames_low, coalesce->rx_max_coalesced_frames_low.value, need_update);
+
+ if (coalesce->tx_coalesce_usecs_low.set)
+ UPDATE(ecmd.tx_coalesce_usecs_low, coalesce->tx_coalesce_usecs_low.value, need_update);
+
+ if (coalesce->tx_max_coalesced_frames_low.set)
+ UPDATE(ecmd.tx_max_coalesced_frames_low, coalesce->tx_max_coalesced_frames_low.value, need_update);
+
+ if (coalesce->pkt_rate_high.set)
+ UPDATE(ecmd.pkt_rate_high, coalesce->pkt_rate_high.value, need_update);
+
+ if (coalesce->rx_coalesce_usecs_high.set)
+ UPDATE(ecmd.rx_coalesce_usecs_high, coalesce->rx_coalesce_usecs_high.value, need_update);
+
+ if (coalesce->rx_max_coalesced_frames_high.set)
+ UPDATE(ecmd.rx_max_coalesced_frames_high, coalesce->rx_max_coalesced_frames_high.value, need_update);
+
+ if (coalesce->tx_coalesce_usecs_high.set)
+ UPDATE(ecmd.tx_coalesce_usecs_high, coalesce->tx_coalesce_usecs_high.value, need_update);
+
+ if (coalesce->tx_max_coalesced_frames_high.set)
+ UPDATE(ecmd.tx_max_coalesced_frames_high, coalesce->tx_max_coalesced_frames_high.value, need_update);
+
+ if (coalesce->rate_sample_interval.set)
+ UPDATE(ecmd.rate_sample_interval, DIV_ROUND_UP(coalesce->rate_sample_interval.value, USEC_PER_SEC), need_update);
+
+ if (!need_update)
+ return 0;
+
+ ecmd.cmd = ETHTOOL_SCOALESCE;
+ return RET_NERRNO(ioctl(*ethtool_fd, SIOCETHTOOL, &ifr));
+}
+
+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 = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ /* Empty string resets the value. */
+ memzero(advertise, sizeof(uint32_t) * N_ADVERTISE);
+ return 0;
+ }
+
+ for (const char *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, mode,
+ "Failed to parse advertise mode, ignoring: %s", w);
+ continue;
+ }
+
+ advertise[mode / 32] |= 1UL << (mode % 32);
+ }
+}
+
+int config_parse_mdi(
+ 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) {
+
+ uint8_t *mdi = ASSERT_PTR(data);
+
+ assert(filename);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ *mdi = ETH_TP_MDI_INVALID;
+ return 0;
+ }
+
+ if (STR_IN_SET(rvalue, "mdi", "straight")) {
+ *mdi = ETH_TP_MDI;
+ return 0;
+ }
+
+ if (STR_IN_SET(rvalue, "mdi-x", "mdix", "crossover")) {
+ *mdi = ETH_TP_MDI_X;
+ return 0;
+ }
+
+ if (streq(rvalue, "auto")) {
+ *mdi = ETH_TP_MDI_AUTO;
+ return 0;
+ }
+
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Failed to parse %s= setting, ignoring assignment: %s", lvalue, rvalue);
+ return 0;
+}
+
+int config_parse_ring_buffer_or_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) {
+
+ u32_opt *dst = ASSERT_PTR(data);
+ uint32_t k;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ dst->value = 0;
+ dst->set = false;
+ return 0;
+ }
+
+ if (streq(rvalue, "max")) {
+ dst->value = 0;
+ dst->set = true;
+ return 0;
+ }
+
+ r = safe_atou32(rvalue, &k);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse %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;
+ }
+
+ dst->value = k;
+ dst->set = true;
+ return 0;
+}
+
+int config_parse_wol(
+ 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 new_opts = 0, *opts = data;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (isempty(rvalue)) {
+ *opts = UINT32_MAX; /* Do not update WOL option. */
+ return 0;
+ }
+
+ if (streq(rvalue, "off")) {
+ *opts = 0; /* Disable WOL. */
+ return 0;
+ }
+
+ for (const char *p = rvalue;;) {
+ _cleanup_free_ char *w = NULL;
+ bool found = false;
+
+ 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 wake-on-lan modes '%s', ignoring assignment: %m", rvalue);
+ return 0;
+ }
+ if (r == 0)
+ break;
+
+ for (size_t i = 0; i < ELEMENTSOF(wol_option_map); i++)
+ if (streq(w, wol_option_map[i].name)) {
+ new_opts |= wol_option_map[i].opt;
+ found = true;
+ break;
+ }
+
+ if (!found)
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Unknown wake-on-lan mode '%s', ignoring.", w);
+ }
+
+ if (*opts == UINT32_MAX)
+ *opts = new_opts;
+ else
+ *opts |= new_opts;
+
+ return 0;
+}
+
+int config_parse_coalesce_u32(
+ 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) {
+ u32_opt *dst = data;
+ uint32_t k;
+ int r;
+
+ if (isempty(rvalue)) {
+ dst->value = 0;
+ dst->set = false;
+ return 0;
+ }
+
+ r = safe_atou32(rvalue, &k);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse %s=, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ dst->value = k;
+ dst->set = true;
+ return 0;
+}
+
+int config_parse_coalesce_sec(
+ 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) {
+ u32_opt *dst = data;
+ usec_t usec;
+ int r;
+
+ if (isempty(rvalue)) {
+ dst->value = 0;
+ dst->set = false;
+ return 0;
+ }
+
+ r = parse_sec(rvalue, &usec);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse coalesce setting value, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (usec > UINT32_MAX) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Too large %s= value, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ if (STR_IN_SET(lvalue, "StatisticsBlockCoalesceSec", "CoalescePacketRateSampleIntervalSec") && usec < 1) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Invalid %s= value, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ dst->value = (uint32_t) usec;
+ dst->set = true;
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 19:08:54 +0000