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Diffstat (limited to 'net/bridge/br_device.c')
-rw-r--r--net/bridge/br_device.c146
1 files changed, 96 insertions, 50 deletions
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 0e3dbc5f3c34..b82906fc999a 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -27,15 +27,19 @@ EXPORT_SYMBOL_GPL(nf_br_ops);
/* net device transmit always called with BH disabled */
netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
+ struct net_bridge_mcast_port *pmctx_null = NULL;
struct net_bridge *br = netdev_priv(dev);
+ struct net_bridge_mcast *brmctx = &br->multicast_ctx;
struct net_bridge_fdb_entry *dst;
struct net_bridge_mdb_entry *mdst;
- struct pcpu_sw_netstats *brstats = this_cpu_ptr(br->stats);
const struct nf_br_ops *nf_ops;
u8 state = BR_STATE_FORWARDING;
+ struct net_bridge_vlan *vlan;
const unsigned char *dest;
u16 vid = 0;
+ memset(skb->cb, 0, sizeof(struct br_input_skb_cb));
+
rcu_read_lock();
nf_ops = rcu_dereference(nf_br_ops);
if (nf_ops && nf_ops->br_dev_xmit_hook(skb)) {
@@ -43,10 +47,7 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
- u64_stats_update_begin(&brstats->syncp);
- brstats->tx_packets++;
- brstats->tx_bytes += skb->len;
- u64_stats_update_end(&brstats->syncp);
+ dev_sw_netstats_tx_add(dev, 1, skb->len);
br_switchdev_frame_unmark(skb);
BR_INPUT_SKB_CB(skb)->brdev = dev;
@@ -55,7 +56,8 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
skb_reset_mac_header(skb);
skb_pull(skb, ETH_HLEN);
- if (!br_allowed_ingress(br, br_vlan_group_rcu(br), skb, &vid, &state))
+ if (!br_allowed_ingress(br, br_vlan_group_rcu(br), skb, &vid,
+ &state, &vlan))
goto out;
if (IS_ENABLED(CONFIG_INET) &&
@@ -84,15 +86,15 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
br_flood(br, skb, BR_PKT_MULTICAST, false, true);
goto out;
}
- if (br_multicast_rcv(br, NULL, skb, vid)) {
+ if (br_multicast_rcv(&brmctx, &pmctx_null, vlan, skb, vid)) {
kfree_skb(skb);
goto out;
}
- mdst = br_mdb_get(br, skb, vid);
+ mdst = br_mdb_get(brmctx, skb, vid);
if ((mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) &&
- br_multicast_querier_exists(br, eth_hdr(skb)))
- br_multicast_flood(mdst, skb, false, true);
+ br_multicast_querier_exists(brmctx, eth_hdr(skb), mdst))
+ br_multicast_flood(mdst, skb, brmctx, false, true);
else
br_flood(br, skb, BR_PKT_MULTICAST, false, true);
} else if ((dst = br_fdb_find_rcu(br, dest, vid)) != NULL) {
@@ -105,31 +107,38 @@ out:
return NETDEV_TX_OK;
}
+static struct lock_class_key bridge_netdev_addr_lock_key;
+
+static void br_set_lockdep_class(struct net_device *dev)
+{
+ lockdep_set_class(&dev->addr_list_lock, &bridge_netdev_addr_lock_key);
+}
+
static int br_dev_init(struct net_device *dev)
{
struct net_bridge *br = netdev_priv(dev);
int err;
- br->stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
- if (!br->stats)
+ dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
+ if (!dev->tstats)
return -ENOMEM;
err = br_fdb_hash_init(br);
if (err) {
- free_percpu(br->stats);
+ free_percpu(dev->tstats);
return err;
}
err = br_mdb_hash_init(br);
if (err) {
- free_percpu(br->stats);
+ free_percpu(dev->tstats);
br_fdb_hash_fini(br);
return err;
}
err = br_vlan_init(br);
if (err) {
- free_percpu(br->stats);
+ free_percpu(dev->tstats);
br_mdb_hash_fini(br);
br_fdb_hash_fini(br);
return err;
@@ -137,12 +146,13 @@ static int br_dev_init(struct net_device *dev)
err = br_multicast_init_stats(br);
if (err) {
- free_percpu(br->stats);
+ free_percpu(dev->tstats);
br_vlan_flush(br);
br_mdb_hash_fini(br);
br_fdb_hash_fini(br);
}
+ br_set_lockdep_class(dev);
return err;
}
@@ -155,7 +165,7 @@ static void br_dev_uninit(struct net_device *dev)
br_vlan_flush(br);
br_mdb_hash_fini(br);
br_fdb_hash_fini(br);
- free_percpu(br->stats);
+ free_percpu(dev->tstats);
}
static int br_dev_open(struct net_device *dev)
@@ -167,6 +177,9 @@ static int br_dev_open(struct net_device *dev)
br_stp_enable_bridge(br);
br_multicast_open(br);
+ if (br_opt_get(br, BROPT_MULTICAST_ENABLED))
+ br_multicast_join_snoopers(br);
+
return 0;
}
@@ -187,38 +200,14 @@ static int br_dev_stop(struct net_device *dev)
br_stp_disable_bridge(br);
br_multicast_stop(br);
+ if (br_opt_get(br, BROPT_MULTICAST_ENABLED))
+ br_multicast_leave_snoopers(br);
+
netif_stop_queue(dev);
return 0;
}
-static void br_get_stats64(struct net_device *dev,
- struct rtnl_link_stats64 *stats)
-{
- struct net_bridge *br = netdev_priv(dev);
- struct pcpu_sw_netstats tmp, sum = { 0 };
- unsigned int cpu;
-
- for_each_possible_cpu(cpu) {
- unsigned int start;
- const struct pcpu_sw_netstats *bstats
- = per_cpu_ptr(br->stats, cpu);
- do {
- start = u64_stats_fetch_begin_irq(&bstats->syncp);
- memcpy(&tmp, bstats, sizeof(tmp));
- } while (u64_stats_fetch_retry_irq(&bstats->syncp, start));
- sum.tx_bytes += tmp.tx_bytes;
- sum.tx_packets += tmp.tx_packets;
- sum.rx_bytes += tmp.rx_bytes;
- sum.rx_packets += tmp.rx_packets;
- }
-
- stats->tx_bytes = sum.tx_bytes;
- stats->tx_packets = sum.tx_packets;
- stats->rx_bytes = sum.rx_bytes;
- stats->rx_packets = sum.rx_packets;
-}
-
static int br_change_mtu(struct net_device *dev, int new_mtu)
{
struct net_bridge *br = netdev_priv(dev);
@@ -262,10 +251,10 @@ static int br_set_mac_address(struct net_device *dev, void *p)
static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
- strlcpy(info->driver, "bridge", sizeof(info->driver));
- strlcpy(info->version, BR_VERSION, sizeof(info->version));
- strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
- strlcpy(info->bus_info, "N/A", sizeof(info->bus_info));
+ strscpy(info->driver, "bridge", sizeof(info->driver));
+ strscpy(info->version, BR_VERSION, sizeof(info->version));
+ strscpy(info->fw_version, "N/A", sizeof(info->fw_version));
+ strscpy(info->bus_info, "N/A", sizeof(info->bus_info));
}
static int br_get_link_ksettings(struct net_device *dev,
@@ -400,6 +389,54 @@ static int br_del_slave(struct net_device *dev, struct net_device *slave_dev)
return br_del_if(br, slave_dev);
}
+static int br_fill_forward_path(struct net_device_path_ctx *ctx,
+ struct net_device_path *path)
+{
+ struct net_bridge_fdb_entry *f;
+ struct net_bridge_port *dst;
+ struct net_bridge *br;
+
+ if (netif_is_bridge_port(ctx->dev))
+ return -1;
+
+ br = netdev_priv(ctx->dev);
+
+ br_vlan_fill_forward_path_pvid(br, ctx, path);
+
+ f = br_fdb_find_rcu(br, ctx->daddr, path->bridge.vlan_id);
+ if (!f || !f->dst)
+ return -1;
+
+ dst = READ_ONCE(f->dst);
+ if (!dst)
+ return -1;
+
+ if (br_vlan_fill_forward_path_mode(br, dst, path))
+ return -1;
+
+ path->type = DEV_PATH_BRIDGE;
+ path->dev = dst->br->dev;
+ ctx->dev = dst->dev;
+
+ switch (path->bridge.vlan_mode) {
+ case DEV_PATH_BR_VLAN_TAG:
+ if (ctx->num_vlans >= ARRAY_SIZE(ctx->vlan))
+ return -ENOSPC;
+ ctx->vlan[ctx->num_vlans].id = path->bridge.vlan_id;
+ ctx->vlan[ctx->num_vlans].proto = path->bridge.vlan_proto;
+ ctx->num_vlans++;
+ break;
+ case DEV_PATH_BR_VLAN_UNTAG_HW:
+ case DEV_PATH_BR_VLAN_UNTAG:
+ ctx->num_vlans--;
+ break;
+ case DEV_PATH_BR_VLAN_KEEP:
+ break;
+ }
+
+ return 0;
+}
+
static const struct ethtool_ops br_ethtool_ops = {
.get_drvinfo = br_getinfo,
.get_link = ethtool_op_get_link,
@@ -412,12 +449,12 @@ static const struct net_device_ops br_netdev_ops = {
.ndo_init = br_dev_init,
.ndo_uninit = br_dev_uninit,
.ndo_start_xmit = br_dev_xmit,
- .ndo_get_stats64 = br_get_stats64,
+ .ndo_get_stats64 = dev_get_tstats64,
.ndo_set_mac_address = br_set_mac_address,
.ndo_set_rx_mode = br_dev_set_multicast_list,
.ndo_change_rx_flags = br_dev_change_rx_flags,
.ndo_change_mtu = br_change_mtu,
- .ndo_do_ioctl = br_dev_ioctl,
+ .ndo_siocdevprivate = br_dev_siocdevprivate,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_netpoll_setup = br_netpoll_setup,
.ndo_netpoll_cleanup = br_netpoll_cleanup,
@@ -428,12 +465,14 @@ static const struct net_device_ops br_netdev_ops = {
.ndo_fix_features = br_fix_features,
.ndo_fdb_add = br_fdb_add,
.ndo_fdb_del = br_fdb_delete,
+ .ndo_fdb_del_bulk = br_fdb_delete_bulk,
.ndo_fdb_dump = br_fdb_dump,
.ndo_fdb_get = br_fdb_get,
.ndo_bridge_getlink = br_getlink,
.ndo_bridge_setlink = br_setlink,
.ndo_bridge_dellink = br_dellink,
.ndo_features_check = passthru_features_check,
+ .ndo_fill_forward_path = br_fill_forward_path,
};
static struct device_type br_type = {
@@ -463,6 +502,13 @@ void br_dev_setup(struct net_device *dev)
spin_lock_init(&br->lock);
INIT_LIST_HEAD(&br->port_list);
INIT_HLIST_HEAD(&br->fdb_list);
+ INIT_HLIST_HEAD(&br->frame_type_list);
+#if IS_ENABLED(CONFIG_BRIDGE_MRP)
+ INIT_HLIST_HEAD(&br->mrp_list);
+#endif
+#if IS_ENABLED(CONFIG_BRIDGE_CFM)
+ INIT_HLIST_HEAD(&br->mep_list);
+#endif
spin_lock_init(&br->hash_lock);
br->bridge_id.prio[0] = 0x80;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.