diff options
Diffstat (limited to 'target/linux/generic/pending-5.10/640-03-net-8021q-resolve-forwarding-path-for-vlan-devices.patch')
| -rw-r--r-- | target/linux/generic/pending-5.10/640-03-net-8021q-resolve-forwarding-path-for-vlan-devices.patch | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.10/640-03-net-8021q-resolve-forwarding-path-for-vlan-devices.patch b/target/linux/generic/pending-5.10/640-03-net-8021q-resolve-forwarding-path-for-vlan-devices.patch new file mode 100644 index 0000000000..ddc0de0d3b --- /dev/null +++ b/target/linux/generic/pending-5.10/640-03-net-8021q-resolve-forwarding-path-for-vlan-devices.patch @@ -0,0 +1,80 @@ +From: Pablo Neira Ayuso <pablo@netfilter.org> +Date: Fri, 20 Nov 2020 13:49:16 +0100 +Subject: [PATCH] net: 8021q: resolve forwarding path for vlan devices + +Add .ndo_fill_forward_path for vlan devices. + +For instance, assuming the following topology: + + IP forwarding + / \ + eth0.100 eth0 + | + eth0 + . + . + . + ethX + ab:cd:ef:ab:cd:ef + +For packets going through IP forwarding to eth0.100 whose destination +MAC address is ab:cd:ef:ab:cd:ef, dev_fill_forward_path() provides the +following path: + + eth0.100 -> eth0 + +Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> +--- + +--- a/include/linux/netdevice.h ++++ b/include/linux/netdevice.h +@@ -835,11 +835,18 @@ typedef u16 (*select_queue_fallback_t)(s + + enum net_device_path_type { + DEV_PATH_ETHERNET = 0, ++ DEV_PATH_VLAN, + }; + + struct net_device_path { + enum net_device_path_type type; + const struct net_device *dev; ++ union { ++ struct { ++ u16 id; ++ __be16 proto; ++ } vlan; ++ }; + }; + + #define NET_DEVICE_PATH_STACK_MAX 5 +--- a/net/8021q/vlan_dev.c ++++ b/net/8021q/vlan_dev.c +@@ -767,6 +767,20 @@ static int vlan_dev_get_iflink(const str + return real_dev->ifindex; + } + ++static int vlan_dev_fill_forward_path(struct net_device_path_ctx *ctx, ++ struct net_device_path *path) ++{ ++ struct vlan_dev_priv *vlan = vlan_dev_priv(ctx->dev); ++ ++ path->type = DEV_PATH_VLAN; ++ path->vlan.id = vlan->vlan_id; ++ path->vlan.proto = vlan->vlan_proto; ++ path->dev = ctx->dev; ++ ctx->dev = vlan->real_dev; ++ ++ return 0; ++} ++ + static const struct ethtool_ops vlan_ethtool_ops = { + .get_link_ksettings = vlan_ethtool_get_link_ksettings, + .get_drvinfo = vlan_ethtool_get_drvinfo, +@@ -805,6 +819,7 @@ static const struct net_device_ops vlan_ + #endif + .ndo_fix_features = vlan_dev_fix_features, + .ndo_get_iflink = vlan_dev_get_iflink, ++ .ndo_fill_forward_path = vlan_dev_fill_forward_path, + }; + + static void vlan_dev_free(struct net_device *dev) |