diff options
Diffstat (limited to 'target/linux/generic/pending-5.15/704-02-net-fix-dev_fill_forward_path-with-pppoe-bridge.patch')
-rw-r--r-- | target/linux/generic/pending-5.15/704-02-net-fix-dev_fill_forward_path-with-pppoe-bridge.patch | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.15/704-02-net-fix-dev_fill_forward_path-with-pppoe-bridge.patch b/target/linux/generic/pending-5.15/704-02-net-fix-dev_fill_forward_path-with-pppoe-bridge.patch new file mode 100644 index 0000000000..984733aeb8 --- /dev/null +++ b/target/linux/generic/pending-5.15/704-02-net-fix-dev_fill_forward_path-with-pppoe-bridge.patch @@ -0,0 +1,66 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Fri, 6 May 2022 13:54:44 +0200 +Subject: [PATCH] net: fix dev_fill_forward_path with pppoe + bridge + +When calling dev_fill_forward_path on a pppoe device, the provided destination +address is invalid. In order for the bridge fdb lookup to succeed, the pppoe +code needs to update ctx->daddr to the correct value. +Fix this by storing the address inside struct net_device_path_ctx + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c ++++ b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c +@@ -90,7 +90,6 @@ mtk_flow_get_wdma_info(struct net_device + { + struct net_device_path_ctx ctx = { + .dev = dev, +- .daddr = addr, + }; + struct net_device_path path = {}; + +@@ -100,6 +99,7 @@ mtk_flow_get_wdma_info(struct net_device + if (!dev->netdev_ops->ndo_fill_forward_path) + return -1; + ++ memcpy(ctx.daddr, addr, sizeof(ctx.daddr)); + if (dev->netdev_ops->ndo_fill_forward_path(&ctx, &path)) + return -1; + +--- a/drivers/net/ppp/pppoe.c ++++ b/drivers/net/ppp/pppoe.c +@@ -988,6 +988,7 @@ static int pppoe_fill_forward_path(struc + path->encap.proto = htons(ETH_P_PPP_SES); + path->encap.id = be16_to_cpu(po->num); + memcpy(path->encap.h_dest, po->pppoe_pa.remote, ETH_ALEN); ++ memcpy(ctx->daddr, po->pppoe_pa.remote, ETH_ALEN); + path->dev = ctx->dev; + ctx->dev = dev; + +--- a/include/linux/netdevice.h ++++ b/include/linux/netdevice.h +@@ -894,7 +894,7 @@ struct net_device_path_stack { + + struct net_device_path_ctx { + const struct net_device *dev; +- const u8 *daddr; ++ u8 daddr[ETH_ALEN]; + + int num_vlans; + struct { +--- a/net/core/dev.c ++++ b/net/core/dev.c +@@ -741,11 +741,11 @@ int dev_fill_forward_path(const struct n + const struct net_device *last_dev; + struct net_device_path_ctx ctx = { + .dev = dev, +- .daddr = daddr, + }; + struct net_device_path *path; + int ret = 0; + ++ memcpy(ctx.daddr, daddr, sizeof(ctx.daddr)); + stack->num_paths = 0; + while (ctx.dev && ctx.dev->netdev_ops->ndo_fill_forward_path) { + last_dev = ctx.dev; |