| /* SPDX-License-Identifier: LGPL-2.1+ */ |
| |
| #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; |
| |
| 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; |
| |
| 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; |
| |
| 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; |
| |
| 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; |
| |
| 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; |
| |
| 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 **gstrings) { |
| _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; |
| |
| 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; |
| |
| *gstrings = 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; |
| |
| 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 **g) { |
| 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; |
| |
| /* 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); |
| |
| *g = u; |
| |
| return 0; |
| } |
| |
| static int get_gset(int fd, struct ifreq *ifr, struct ethtool_link_usettings **u) { |
| struct ethtool_link_usettings *e; |
| struct ethtool_cmd ecmd = { |
| .cmd = ETHTOOL_GSET, |
| }; |
| int r; |
| |
| 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, |
| }; |
| |
| *u = 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; |
| |
| 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; |
| |
| 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(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; |
| |
| 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; |
| |
| 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; |
| } |