system-linux: expose hw-tc-offload ethtool feature in device status dump
[project/netifd.git] / system-linux.c
index 9846e98882362079e0ff8fda25591221cc10755c..0f13a99f135b607ae1c718ba54f3e479e6741dfc 100644 (file)
@@ -490,55 +490,9 @@ static void system_bridge_set_isolated(struct device *dev, const char *val)
        system_set_dev_sysfs("brport/isolated", dev->ifname, val);
 }
 
-static void system_bridge_set_multicast_router(struct device *dev, const char *val, bool bridge)
+static void system_bridge_set_multicast_router(struct device *dev, const char *val)
 {
-       system_set_dev_sysfs(bridge ? "bridge/multicast_router" :
-                                     "brport/multicast_router",
-                             dev->ifname, val);
-}
-
-static void system_bridge_set_robustness(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/multicast_startup_query_count",
-                             dev->ifname, val);
-       system_set_dev_sysfs("bridge/multicast_last_member_count",
-                             dev->ifname, val);
-}
-
-static void system_bridge_set_query_interval(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/multicast_query_interval",
-                             dev->ifname, val);
-}
-
-static void system_bridge_set_query_response_interval(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/multicast_query_response_interval",
-                             dev->ifname, val);
-}
-
-static void system_bridge_set_last_member_interval(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/multicast_last_member_interval",
-                             dev->ifname, val);
-}
-
-static void system_bridge_set_membership_interval(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/multicast_membership_interval",
-                             dev->ifname, val);
-}
-
-static void system_bridge_set_other_querier_timeout(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/multicast_querier_interval",
-                             dev->ifname, val);
-}
-
-static void system_bridge_set_startup_query_interval(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/multicast_startup_query_interval",
-                             dev->ifname, val);
+       system_set_dev_sysfs("brport/multicast_router", dev->ifname, val);
 }
 
 void system_bridge_set_stp_state(struct device *dev, bool val)
@@ -548,31 +502,6 @@ void system_bridge_set_stp_state(struct device *dev, bool val)
        system_set_dev_sysfs("bridge/stp_state", dev->ifname, valstr);
 }
 
-static void system_bridge_set_forward_delay(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/forward_delay", dev->ifname, val);
-}
-
-static void system_bridge_set_priority(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/priority", dev->ifname, val);
-}
-
-static void system_bridge_set_ageing_time(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/ageing_time", dev->ifname, val);
-}
-
-static void system_bridge_set_hello_time(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/hello_time", dev->ifname, val);
-}
-
-static void system_bridge_set_max_age(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/max_age", dev->ifname, val);
-}
-
 static void system_bridge_set_learning(struct device *dev, const char *val)
 {
        system_set_dev_sysfs("brport/learning", dev->ifname, val);
@@ -583,11 +512,6 @@ static void system_bridge_set_unicast_flood(struct device *dev, const char *val)
        system_set_dev_sysfs("brport/unicast_flood", dev->ifname, val);
 }
 
-static void system_bridge_set_vlan_filtering(struct device *dev, const char *val)
-{
-       system_set_dev_sysfs("bridge/vlan_filtering", dev->ifname, val);
-}
-
 static int system_get_disable_ipv6(struct device *dev, char *buf, const size_t buf_sz)
 {
        return system_get_dev_sysctl("ipv6/conf", "disable_ipv6",
@@ -831,9 +755,44 @@ static int system_rtnl_call(struct nl_msg *msg)
        return nl_wait_for_ack(sock_rtnl);
 }
 
+static struct nl_msg *__system_ifinfo_msg(int af, int index, const char *ifname, uint16_t type, uint16_t flags)
+{
+       struct nl_msg *msg;
+       struct ifinfomsg iim = {
+               .ifi_family = af,
+               .ifi_index = index,
+       };
+
+       msg = nlmsg_alloc_simple(type, flags | NLM_F_REQUEST);
+       if (!msg)
+               return NULL;
+
+       nlmsg_append(msg, &iim, sizeof(iim), 0);
+       if (ifname)
+               nla_put_string(msg, IFLA_IFNAME, ifname);
+
+       return msg;
+}
+
+static struct nl_msg *system_ifinfo_msg(const char *ifname, uint16_t type, uint16_t flags)
+{
+       return __system_ifinfo_msg(AF_UNSPEC, 0, ifname, type, flags);
+}
+
+static int system_link_del(const char *ifname)
+{
+       struct nl_msg *msg;
+
+       msg = system_ifinfo_msg(ifname, RTM_DELLINK, 0);
+       if (!msg)
+               return -1;
+
+       return system_rtnl_call(msg);
+}
+
 int system_bridge_delbr(struct device *bridge)
 {
-       return ioctl(sock_ioctl, SIOCBRDELBR, bridge->ifname);
+       return system_link_del(bridge->ifname);
 }
 
 static int system_bridge_if(const char *bridge, struct device *dev, int cmd, void *data)
@@ -925,7 +884,7 @@ retry:
 
        if (dev->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
                snprintf(buf, sizeof(buf), "%u", dev->settings.multicast_router);
-               system_bridge_set_multicast_router(dev, buf, false);
+               system_bridge_set_multicast_router(dev, buf);
        }
 
        if (dev->settings.flags & DEV_OPT_MULTICAST_FAST_LEAVE &&
@@ -957,23 +916,21 @@ int system_bridge_delif(struct device *bridge, struct device *dev)
 
 int system_bridge_vlan(const char *iface, uint16_t vid, bool add, unsigned int vflags)
 {
-       struct ifinfomsg ifi = { .ifi_family = PF_BRIDGE, };
        struct bridge_vlan_info vinfo = { .vid = vid, };
        unsigned short flags = 0;
        struct nlattr *afspec;
        struct nl_msg *nlm;
+       int index;
        int ret = 0;
 
-       ifi.ifi_index = if_nametoindex(iface);
-       if (!ifi.ifi_index)
+       index = if_nametoindex(iface);
+       if (!index)
                return -1;
 
-       nlm = nlmsg_alloc_simple(add ? RTM_SETLINK : RTM_DELLINK, NLM_F_REQUEST);
+       nlm = __system_ifinfo_msg(PF_BRIDGE, index, NULL, add ? RTM_SETLINK : RTM_DELLINK, 0);
        if (!nlm)
                return -1;
 
-       nlmsg_append(nlm, &ifi, sizeof(ifi), 0);
-
        if (vflags & BRVLAN_F_SELF)
                flags |= BRIDGE_FLAGS_SELF;
 
@@ -1323,117 +1280,93 @@ sec_to_jiffies(int val)
        return (unsigned long) val * 100;
 }
 
-static void system_bridge_conf_multicast_deps(struct device *bridge,
-                                             struct bridge_config *cfg,
-                                             char *buf,
-                                             int buf_len)
+int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
 {
-       int val;
-
-       if (cfg->flags & BRIDGE_OPT_ROBUSTNESS ||
-           cfg->flags & BRIDGE_OPT_QUERY_INTERVAL ||
-           cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
-               val = cfg->robustness * cfg->query_interval +
-                       cfg->query_response_interval;
-
-               snprintf(buf, buf_len, "%i", val);
-               system_bridge_set_membership_interval(bridge, buf);
-
-               val = cfg->robustness * cfg->query_interval +
-                       cfg->query_response_interval / 2;
-
-               snprintf(buf, buf_len, "%i", val);
-               system_bridge_set_other_querier_timeout(bridge, buf);
-       }
+       struct nlattr *linkinfo, *data;
+       struct nl_msg *msg;
+       uint64_t val;
+       int rv;
 
-       if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
-               val = cfg->query_interval / 4;
+       msg = system_ifinfo_msg(bridge->ifname, RTM_NEWLINK, NLM_F_CREATE | NLM_F_EXCL);
+       if (!msg)
+               return -1;
 
-               snprintf(buf, buf_len, "%i", val);
-               system_bridge_set_startup_query_interval(bridge, buf);
-       }
-}
+       if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
+               goto nla_put_failure;
 
-static void system_bridge_conf_multicast(struct device *bridge,
-                                        struct bridge_config *cfg,
-                                        char *buf,
-                                        int buf_len)
-{
-       system_set_dev_sysfs("bridge/multicast_snooping",
-               bridge->ifname, cfg->igmp_snoop ? "1" : "0");
+       nla_put_string(msg, IFLA_INFO_KIND, "bridge");
 
-       system_set_dev_sysfs("bridge/multicast_querier",
-               bridge->ifname, cfg->multicast_querier ? "1" : "0");
+       if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
+               goto nla_put_failure;
 
-       snprintf(buf, buf_len, "%i", cfg->hash_max);
-       system_set_dev_sysfs("/bridge/hash_max",
-               bridge->ifname, buf);
+       nla_put_u32(msg, IFLA_BR_STP_STATE, cfg->stp);
+       nla_put_u32(msg, IFLA_BR_FORWARD_DELAY, sec_to_jiffies(cfg->forward_delay));
+       nla_put_u8(msg, IFLA_BR_MCAST_SNOOPING, !!cfg->igmp_snoop);
+       nla_put_u8(msg, IFLA_BR_MCAST_QUERIER, !!cfg->multicast_querier);
+       nla_put_u32(msg, IFLA_BR_MCAST_HASH_MAX, cfg->hash_max);
 
-       if (bridge->settings.flags & DEV_OPT_MULTICAST_ROUTER) {
-               snprintf(buf, buf_len, "%u", bridge->settings.multicast_router);
-               system_bridge_set_multicast_router(bridge, buf, true);
-       }
+       if (bridge->settings.flags & DEV_OPT_MULTICAST_ROUTER)
+               nla_put_u8(msg, IFLA_BR_MCAST_ROUTER, !!bridge->settings.multicast_router);
 
        if (cfg->flags & BRIDGE_OPT_ROBUSTNESS) {
-               snprintf(buf, buf_len, "%i", cfg->robustness);
-               system_bridge_set_robustness(bridge, buf);
+               nla_put_u32(msg, IFLA_BR_MCAST_STARTUP_QUERY_CNT, cfg->robustness);
+               nla_put_u32(msg, IFLA_BR_MCAST_LAST_MEMBER_CNT, cfg->robustness);
        }
 
-       if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
-               snprintf(buf, buf_len, "%i", cfg->query_interval);
-               system_bridge_set_query_interval(bridge, buf);
-       }
+       if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL)
+               nla_put_u64(msg, IFLA_BR_MCAST_QUERY_INTVL, cfg->query_interval);
 
-       if (cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
-               snprintf(buf, buf_len, "%i", cfg->query_response_interval);
-               system_bridge_set_query_response_interval(bridge, buf);
-       }
+       if (cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL)
+               nla_put_u64(msg, IFLA_BR_MCAST_QUERY_RESPONSE_INTVL, cfg->query_response_interval);
 
-       if (cfg->flags & BRIDGE_OPT_LAST_MEMBER_INTERVAL) {
-               snprintf(buf, buf_len, "%i", cfg->last_member_interval);
-               system_bridge_set_last_member_interval(bridge, buf);
-       }
+       if (cfg->flags & BRIDGE_OPT_LAST_MEMBER_INTERVAL)
+               nla_put_u64(msg, IFLA_BR_MCAST_LAST_MEMBER_INTVL, cfg->last_member_interval);
 
-       system_bridge_conf_multicast_deps(bridge, cfg, buf, buf_len);
-}
+       if (cfg->flags & BRIDGE_OPT_ROBUSTNESS ||
+           cfg->flags & BRIDGE_OPT_QUERY_INTERVAL ||
+           cfg->flags & BRIDGE_OPT_QUERY_RESPONSE_INTERVAL) {
+               val = cfg->robustness * cfg->query_interval +
+                       cfg->query_response_interval;
 
-int system_bridge_addbr(struct device *bridge, struct bridge_config *cfg)
-{
-       char buf[64];
+               nla_put_u64(msg, IFLA_BR_MCAST_MEMBERSHIP_INTVL, val);
 
-       if (ioctl(sock_ioctl, SIOCBRADDBR, bridge->ifname) < 0)
-               return -1;
+               val -= cfg->query_response_interval / 2;
 
-       system_bridge_set_stp_state(bridge, cfg->stp);
+               nla_put_u64(msg, IFLA_BR_MCAST_QUERIER_INTVL, val);
+       }
 
-       snprintf(buf, sizeof(buf), "%lu", sec_to_jiffies(cfg->forward_delay));
-       system_bridge_set_forward_delay(bridge, buf);
+       if (cfg->flags & BRIDGE_OPT_QUERY_INTERVAL) {
+               val = cfg->query_interval / 4;
 
-       system_bridge_conf_multicast(bridge, cfg, buf, sizeof(buf));
-       system_bridge_set_vlan_filtering(bridge, cfg->vlan_filtering ? "1" : "0");
+               nla_put_u64(msg, IFLA_BR_MCAST_STARTUP_QUERY_INTVL, val);
+       }
 
-       snprintf(buf, sizeof(buf), "%d", cfg->priority);
-       system_bridge_set_priority(bridge, buf);
+       nla_put_u8(msg, IFLA_BR_VLAN_FILTERING, !!cfg->vlan_filtering);
+       nla_put_u16(msg, IFLA_BR_PRIORITY, cfg->priority);
+       nla_put_u32(msg, IFLA_BR_HELLO_TIME, sec_to_jiffies(cfg->hello_time));
+       nla_put_u32(msg, IFLA_BR_MAX_AGE, sec_to_jiffies(cfg->max_age));
 
-       snprintf(buf, sizeof(buf), "%lu", sec_to_jiffies(cfg->hello_time));
-       system_bridge_set_hello_time(bridge, buf);
+       if (cfg->flags & BRIDGE_OPT_AGEING_TIME)
+               nla_put_u32(msg, IFLA_BR_AGEING_TIME, sec_to_jiffies(cfg->ageing_time));
 
-       snprintf(buf, sizeof(buf), "%lu", sec_to_jiffies(cfg->max_age));
-       system_bridge_set_max_age(bridge, buf);
+       nla_nest_end(msg, data);
+       nla_nest_end(msg, linkinfo);
 
-       if (cfg->flags & BRIDGE_OPT_AGEING_TIME) {
-               snprintf(buf, sizeof(buf), "%lu", sec_to_jiffies(cfg->ageing_time));
-               system_bridge_set_ageing_time(bridge, buf);
-       }
+       rv = system_rtnl_call(msg);
+       if (rv)
+               D(SYSTEM, "Error adding bridge '%s': %d\n", bridge->ifname, rv);
 
-       return 0;
+       return rv;
+
+nla_put_failure:
+       nlmsg_free(msg);
+       return -ENOMEM;
 }
 
 int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvlan_config *cfg)
 {
        struct nl_msg *msg;
        struct nlattr *linkinfo, *data;
-       struct ifinfomsg iim = { .ifi_family = AF_UNSPEC, };
        int i, rv;
        static const struct {
                const char *name;
@@ -1445,16 +1378,12 @@ int system_macvlan_add(struct device *macvlan, struct device *dev, struct macvla
                { "passthru", MACVLAN_MODE_PASSTHRU },
        };
 
-       msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
-
+       msg = system_ifinfo_msg(macvlan->ifname, RTM_NEWLINK, NLM_F_CREATE | NLM_F_EXCL);
        if (!msg)
                return -1;
 
-       nlmsg_append(msg, &iim, sizeof(iim), 0);
-
        if (cfg->flags & MACVLAN_OPT_MACADDR)
                nla_put(msg, IFLA_ADDRESS, sizeof(cfg->macaddr), cfg->macaddr);
-       nla_put_string(msg, IFLA_IFNAME, macvlan->ifname);
        nla_put_u32(msg, IFLA_LINK, dev->ifindex);
 
        if (!(linkinfo = nla_nest_start(msg, IFLA_LINKINFO)))
@@ -1492,45 +1421,20 @@ nla_put_failure:
 int system_link_netns_move(struct device *dev, int netns_fd, const char *target_ifname)
 {
        struct nl_msg *msg;
-       struct ifinfomsg iim = {
-               .ifi_family = AF_UNSPEC,
-       };
+       int index;
 
        if (!dev)
                return -1;
 
-       iim.ifi_index = system_if_resolve(dev);
-       msg = nlmsg_alloc_simple(RTM_NEWLINK, NLM_F_REQUEST);
-
+       index = system_if_resolve(dev);
+       msg = __system_ifinfo_msg(AF_UNSPEC, index, target_ifname, RTM_NEWLINK, 0);
        if (!msg)
                return -1;
 
-       nlmsg_append(msg, &iim, sizeof(iim), 0);
-       if (target_ifname)
-               nla_put_string(msg, IFLA_IFNAME, target_ifname);
-
        nla_put_u32(msg, IFLA_NET_NS_FD, netns_fd);
        return system_rtnl_call(msg);
 }
 
-static int system_link_del(const char *ifname)
-{
-       struct nl_msg *msg;
-       struct ifinfomsg iim = {
-               .ifi_family = AF_UNSPEC,
-               .ifi_index = 0,
-       };
-
-       msg = nlmsg_alloc_simple(RTM_DELLINK, NLM_F_REQUEST);
-
-       if (!msg)
-               return -1;
-
-       nlmsg_append(msg, &iim, sizeof(iim), 0);
-       nla_put_string(msg, IFLA_IFNAME, ifname);
-       return system_rtnl_call(msg);
-}
-
 int system_macvlan_del(struct device *macvlan)
 {
        return system_link_del(macvlan->ifname);
@@ -2447,6 +2351,119 @@ system_add_devtype(struct blob_buf *b, const char *ifname)
        }
 }
 
+#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+
+static int32_t
+ethtool_feature_count(const char *ifname)
+{
+       struct {
+               struct ethtool_sset_info hdr;
+               uint32_t buf;
+       } req = {
+               .hdr = {
+                       .cmd = ETHTOOL_GSSET_INFO,
+                       .sset_mask = 1 << ETH_SS_FEATURES
+               }
+       };
+
+       struct ifreq ifr = {
+               .ifr_data = (void *)&req
+       };
+
+       strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
+
+       if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) != 0)
+               return -1;
+
+       if (!req.hdr.sset_mask)
+               return 0;
+
+       return req.buf;
+}
+
+static int32_t
+ethtool_feature_index(const char *ifname, const char *keyname)
+{
+       struct ethtool_gstrings *feature_names;
+       struct ifreq ifr = { 0 };
+       int32_t n_features, i;
+
+       n_features = ethtool_feature_count(ifname);
+
+       if (n_features <= 0)
+               return -1;
+
+       feature_names = calloc(1, sizeof(*feature_names) + n_features * ETH_GSTRING_LEN);
+
+       if (!feature_names)
+               return -1;
+
+       feature_names->cmd = ETHTOOL_GSTRINGS;
+       feature_names->string_set = ETH_SS_FEATURES;
+       feature_names->len = n_features;
+
+       strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
+       ifr.ifr_data = (void *)feature_names;
+
+       if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) != 0) {
+               free(feature_names);
+
+               return -1;
+       }
+
+       for (i = 0; i < feature_names->len; i++)
+               if (!strcmp((char *)&feature_names->data[i * ETH_GSTRING_LEN], keyname))
+                       break;
+
+       if (i >= feature_names->len)
+               i = -1;
+
+       free(feature_names);
+
+       return i;
+}
+
+static bool
+ethtool_feature_value(const char *ifname, const char *keyname)
+{
+       struct ethtool_get_features_block *feature_block;
+       struct ethtool_gfeatures *feature_values;
+       struct ifreq ifr = { 0 };
+       int32_t feature_idx;
+       bool active;
+
+       feature_idx = ethtool_feature_index(ifname, keyname);
+
+       if (feature_idx < 0)
+               return false;
+
+       feature_values = calloc(1,
+               sizeof(*feature_values) +
+               sizeof(feature_values->features[0]) * DIV_ROUND_UP(feature_idx, 32));
+
+       if (!feature_values)
+               return false;
+
+       feature_values->cmd = ETHTOOL_GFEATURES;
+       feature_values->size = DIV_ROUND_UP(feature_idx, 32);
+
+       strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
+       ifr.ifr_data = (void *)feature_values;
+
+       if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr) != 0) {
+               free(feature_values);
+
+               return false;
+       }
+
+       feature_block = &feature_values->features[feature_idx / 32];
+       active = feature_block->active & (1U << feature_idx % 32);
+
+       free(feature_values);
+
+       return active;
+}
+
 int
 system_if_dump_info(struct device *dev, struct blob_buf *b)
 {
@@ -2482,6 +2499,9 @@ system_if_dump_info(struct device *dev, struct blob_buf *b)
                blobmsg_add_u8(b, "autoneg", !!ecmd.autoneg);
        }
 
+       blobmsg_add_u8(b, "hw-tc-offload",
+               ethtool_feature_value(dev->ifname, "hw-tc-offload"));
+
        system_add_devtype(b, dev->ifname);
 
        return 0;