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net: ethernet: mtk-ppe: fix traffic offload with bridged wlan

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A typical flow offload scenario for OpenWrt users is routed traffic
received by the wan interface that is redirected to a wlan device
belonging to the lan bridge. Current implementation fails to
fill wdma offload info in mtk_flow_get_wdma_info() since odev device is
the local bridge. Fix the issue running dev_fill_forward_path routine in
mtk_flow_get_wdma_info in order to identify the wlan device.

Tested-by: Paolo Valerio <pvalerio@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lorenzo Bianconi 2022-07-22 09:06:19 +02:00 committed by David S. Miller
parent 360f9f3152
commit 2830e31477
1 changed files with 14 additions and 18 deletions
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32
drivers/net/ethernet/mediatek/mtk_ppe_offload.c
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@ -88,32 +88,28 @@ mtk_flow_offload_mangle_eth(const struct flow_action_entry *act, void *eth)
static int
mtk_flow_get_wdma_info(struct net_device *dev, const u8 *addr, struct mtk_wdma_info *info)
{
struct net_device_path_ctx ctx = {
.dev = dev,
};
struct net_device_path path = {};
struct net_device_path_stack stack;
struct net_device_path *path;
int err;
if (!ctx.dev)
if (!dev)
return -ENODEV;
memcpy(ctx.daddr, addr, sizeof(ctx.daddr));
if (!IS_ENABLED(CONFIG_NET_MEDIATEK_SOC_WED))
return -1;
if (!dev->netdev_ops->ndo_fill_forward_path)
err = dev_fill_forward_path(dev, addr, &stack);
if (err)
return err;
path = &stack.path[stack.num_paths - 1];
if (path->type != DEV_PATH_MTK_WDMA)
return -1;
if (dev->netdev_ops->ndo_fill_forward_path(&ctx, &path))
return -1;
if (path.type != DEV_PATH_MTK_WDMA)
return -1;
info->wdma_idx = path.mtk_wdma.wdma_idx;
info->queue = path.mtk_wdma.queue;
info->bss = path.mtk_wdma.bss;
info->wcid = path.mtk_wdma.wcid;
info->wdma_idx = path->mtk_wdma.wdma_idx;
info->queue = path->mtk_wdma.queue;
info->bss = path->mtk_wdma.bss;
info->wcid = path->mtk_wdma.wcid;
return 0;
}