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63 lines
1.5 KiB
Diff
63 lines
1.5 KiB
Diff
From: Pablo Neira Ayuso <pablo@netfilter.org>
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Date: Fri, 20 Nov 2020 13:49:17 +0100
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Subject: [PATCH] bridge: resolve forwarding path for bridge devices
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Add .ndo_fill_forward_path for bridge devices.
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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---
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--- a/include/linux/netdevice.h
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+++ b/include/linux/netdevice.h
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@@ -836,6 +836,7 @@ typedef u16 (*select_queue_fallback_t)(s
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enum net_device_path_type {
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DEV_PATH_ETHERNET = 0,
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DEV_PATH_VLAN,
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+ DEV_PATH_BRIDGE,
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};
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struct net_device_path {
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--- a/net/bridge/br_device.c
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+++ b/net/bridge/br_device.c
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@@ -398,6 +398,32 @@ static int br_del_slave(struct net_devic
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return br_del_if(br, slave_dev);
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}
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+static int br_fill_forward_path(struct net_device_path_ctx *ctx,
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+ struct net_device_path *path)
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+{
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+ struct net_bridge_fdb_entry *f;
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+ struct net_bridge_port *dst;
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+ struct net_bridge *br;
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+
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+ if (netif_is_bridge_port(ctx->dev))
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+ return -1;
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+
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+ br = netdev_priv(ctx->dev);
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+ f = br_fdb_find_rcu(br, ctx->daddr, 0);
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+ if (!f || !f->dst)
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+ return -1;
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+
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+ dst = READ_ONCE(f->dst);
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+ if (!dst)
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+ return -1;
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+
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+ path->type = DEV_PATH_BRIDGE;
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+ path->dev = dst->br->dev;
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+ ctx->dev = dst->dev;
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+
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+ return 0;
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+}
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+
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static const struct ethtool_ops br_ethtool_ops = {
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.get_drvinfo = br_getinfo,
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.get_link = ethtool_op_get_link,
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@@ -432,6 +458,7 @@ static const struct net_device_ops br_ne
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.ndo_bridge_setlink = br_setlink,
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.ndo_bridge_dellink = br_dellink,
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.ndo_features_check = passthru_features_check,
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+ .ndo_fill_forward_path = br_fill_forward_path,
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};
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static struct device_type br_type = {
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