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-rw-r--r--src/udev/net/ethtool-util.c787
1 files changed, 787 insertions, 0 deletions
diff --git a/src/udev/net/ethtool-util.c b/src/udev/net/ethtool-util.c
new file mode 100644
index 0000000..0dcec03
--- /dev/null
+++ b/src/udev/net/ethtool-util.c
@@ -0,0 +1,787 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <linux/ethtool.h>
+#include <linux/sockios.h>
+
+#include "conf-parser.h"
+#include "ethtool-util.h"
+#include "link-config.h"
+#include "log.h"
+#include "missing.h"
+#include "socket-util.h"
+#include "string-table.h"
+#include "strxcpyx.h"
+#include "util.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_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",
+};
+/* Make sure the array is large enough to fit all bits */
+assert_cc((ELEMENTSOF(ethtool_link_mode_bit_table)-1) / 32 < ELEMENTSOF(((struct link_config){}).advertise));
+
+DEFINE_STRING_TABLE_LOOKUP(ethtool_link_mode_bit, enum ethtool_link_mode_bit_indices);
+
+int ethtool_connect(int *ret) {
+ int fd;
+
+ assert_return(ret, -EINVAL);
+
+ fd = socket_ioctl_fd();
+ if (fd < 0)
+ return fd;
+
+ *ret = fd;
+
+ return 0;
+}
+
+int ethtool_get_driver(int *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 (*fd < 0) {
+ r = ethtool_connect(fd);
+ if (r < 0)
+ return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
+ }
+
+ strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
+
+ r = ioctl(*fd, SIOCETHTOOL, &ifr);
+ if (r < 0)
+ return -errno;
+
+ d = strdup(ecmd.driver);
+ if (!d)
+ return -ENOMEM;
+
+ *ret = d;
+ return 0;
+}
+
+int ethtool_set_speed(int *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 (*fd < 0) {
+ r = ethtool_connect(fd);
+ if (r < 0)
+ return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
+ }
+
+ strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
+
+ r = ioctl(*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(*fd, SIOCETHTOOL, &ifr);
+ if (r < 0)
+ return -errno;
+ }
+
+ return 0;
+}
+
+int ethtool_set_wol(int *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 (*fd < 0) {
+ r = ethtool_connect(fd);
+ if (r < 0)
+ return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
+ }
+
+ strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
+
+ r = ioctl(*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(*fd, SIOCETHTOOL, &ifr);
+ if (r < 0)
+ return -errno;
+ }
+
+ return 0;
+}
+
+static int get_stringset(int 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(fd, SIOCETHTOOL, ifr);
+ if (r < 0)
+ return -errno;
+
+ if (!buffer.info.sset_mask)
+ return -EINVAL;
+
+ len = buffer.info.data[0];
+
+ 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(fd, SIOCETHTOOL, ifr);
+ if (r < 0)
+ return -errno;
+
+ *gstrings = TAKE_PTR(strings);
+
+ return 0;
+}
+
+static int find_feature_index(struct ethtool_gstrings *strings, const char *feature) {
+ unsigned i;
+
+ for (i = 0; i < strings->len; i++) {
+ if (streq((char *) &strings->data[i * ETH_GSTRING_LEN], feature))
+ return i;
+ }
+
+ return -1;
+}
+
+int ethtool_set_features(int *fd, const char *ifname, int *features) {
+ _cleanup_free_ struct ethtool_gstrings *strings = NULL;
+ struct ethtool_sfeatures *sfeatures;
+ int block, bit, i, r;
+ struct ifreq ifr = {};
+
+ if (*fd < 0) {
+ r = ethtool_connect(fd);
+ if (r < 0)
+ return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
+ }
+
+ strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
+
+ r = get_stringset(*fd, &ifr, ETH_SS_FEATURES, &strings);
+ if (r < 0)
+ return log_warning_errno(r, "link_config: 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 = find_feature_index(strings, netdev_feature_table[i]);
+ if (r < 0) {
+ log_warning_errno(r, "link_config: could not find feature: %s", netdev_feature_table[i]);
+ continue;
+ }
+
+ block = r / 32;
+ bit = r % 32;
+
+ sfeatures->features[block].valid |= 1 << bit;
+
+ if (features[i])
+ sfeatures->features[block].requested |= 1 << bit;
+ else
+ sfeatures->features[block].requested &= ~(1 << bit);
+ }
+ }
+
+ ifr.ifr_data = (void *) sfeatures;
+
+ r = ioctl(*fd, SIOCETHTOOL, &ifr);
+ if (r < 0)
+ return log_warning_errno(r, "link_config: 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 = new0(struct ethtool_link_usettings , 1);
+ if (!u)
+ return -ENOMEM;
+
+ u->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 = new0(struct ethtool_link_usettings, 1);
+ if (!e)
+ return -ENOMEM;
+
+ e->base.cmd = ETHTOOL_GSET;
+
+ e->base.link_mode_masks_nwords = 1;
+ e->base.speed = ethtool_cmd_speed(&ecmd);
+ e->base.duplex = ecmd.duplex;
+ e->base.port = ecmd.port;
+ e->base.phy_address = ecmd.phy_address;
+ e->base.autoneg = ecmd.autoneg;
+ e->base.mdio_support = ecmd.mdio_support;
+
+ e->link_modes.supported[0] = ecmd.supported;
+ e->link_modes.advertising[0] = ecmd.advertising;
+ e->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, struct link_config *link) {
+ _cleanup_free_ struct ethtool_link_usettings *u = NULL;
+ struct ifreq ifr = {};
+ int r;
+
+ if (link->autonegotiation != AUTONEG_DISABLE && eqzero(link->advertise)) {
+ log_info("link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.");
+ return 0;
+ }
+
+ if (*fd < 0) {
+ r = ethtool_connect(fd);
+ if (r < 0)
+ return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
+ }
+
+ 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, "link_config: Cannot get device settings for %s : %m", ifname);
+ }
+
+ if (link->speed)
+ u->base.speed = DIV_ROUND_UP(link->speed, 1000000);
+
+ if (link->duplex != _DUP_INVALID)
+ u->base.duplex = link->duplex;
+
+ if (link->port != _NET_DEV_PORT_INVALID)
+ u->base.port = link->port;
+
+ if (link->autonegotiation >= 0)
+ u->base.autoneg = link->autonegotiation;
+
+ if (!eqzero(link->advertise)) {
+ u->base.autoneg = AUTONEG_ENABLE;
+ memcpy(&u->link_modes.advertising, link->advertise, sizeof(link->advertise));
+ memzero((uint8_t*) &u->link_modes.advertising + sizeof(link->advertise),
+ ETHTOOL_LINK_MODE_MASK_MAX_KERNEL_NBYTES - sizeof(link->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, "link_config: Cannot set device settings for %s : %m", ifname);
+
+ return r;
+}
+
+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) {
+ link_config *config = 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_ERR, filename, line, r, "Failed to parse channel value, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ if (k < 1) {
+ log_syntax(unit, LOG_ERR, filename, line, -EINVAL, "Invalid %s value, ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ if (streq(lvalue, "RxChannels")) {
+ config->channels.rx_count = k;
+ config->channels.rx_count_set = true;
+ } else if (streq(lvalue, "TxChannels")) {
+ config->channels.tx_count = k;
+ config->channels.tx_count_set = true;
+ } else if (streq(lvalue, "OtherChannels")) {
+ config->channels.other_count = k;
+ config->channels.other_count_set = true;
+ } else if (streq(lvalue, "CombinedChannels")) {
+ config->channels.combined_count = k;
+ config->channels.combined_count_set = true;
+ }
+
+ return 0;
+}
+
+int ethtool_set_channels(int *fd, const char *ifname, 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(fd);
+ if (r < 0)
+ return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
+ }
+
+ 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 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) {
+ link_config *config = data;
+ const char *p;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (isempty(rvalue)) {
+ /* Empty string resets the value. */
+ zero(config->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_ERR, filename, line, r, "Failed to split advertise modes '%s', ignoring: %m", rvalue);
+ break;
+ }
+ if (r == 0)
+ break;
+
+ mode = ethtool_link_mode_bit_from_string(w);
+ if (mode < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse advertise mode, ignoring: %s", w);
+ continue;
+ }
+
+ config->advertise[mode / 32] |= 1UL << (mode % 32);
+ }
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 18:43:15 +0000