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-rw-r--r--net/core/dev.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 0b2d777e5b9e..ec96f50b0782 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4258,6 +4258,9 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
4258 struct netdev_rx_queue *rxqueue; 4258 struct netdev_rx_queue *rxqueue;
4259 void *orig_data, *orig_data_end; 4259 void *orig_data, *orig_data_end;
4260 u32 metalen, act = XDP_DROP; 4260 u32 metalen, act = XDP_DROP;
4261 __be16 orig_eth_type;
4262 struct ethhdr *eth;
4263 bool orig_bcast;
4261 int hlen, off; 4264 int hlen, off;
4262 u32 mac_len; 4265 u32 mac_len;
4263 4266
@@ -4298,6 +4301,9 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
4298 xdp->data_hard_start = skb->data - skb_headroom(skb); 4301 xdp->data_hard_start = skb->data - skb_headroom(skb);
4299 orig_data_end = xdp->data_end; 4302 orig_data_end = xdp->data_end;
4300 orig_data = xdp->data; 4303 orig_data = xdp->data;
4304 eth = (struct ethhdr *)xdp->data;
4305 orig_bcast = is_multicast_ether_addr_64bits(eth->h_dest);
4306 orig_eth_type = eth->h_proto;
4301 4307
4302 rxqueue = netif_get_rxqueue(skb); 4308 rxqueue = netif_get_rxqueue(skb);
4303 xdp->rxq = &rxqueue->xdp_rxq; 4309 xdp->rxq = &rxqueue->xdp_rxq;
@@ -4321,6 +4327,14 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
4321 4327
4322 } 4328 }
4323 4329
4330 /* check if XDP changed eth hdr such SKB needs update */
4331 eth = (struct ethhdr *)xdp->data;
4332 if ((orig_eth_type != eth->h_proto) ||
4333 (orig_bcast != is_multicast_ether_addr_64bits(eth->h_dest))) {
4334 __skb_push(skb, ETH_HLEN);
4335 skb->protocol = eth_type_trans(skb, skb->dev);
4336 }
4337
4324 switch (act) { 4338 switch (act) {
4325 case XDP_REDIRECT: 4339 case XDP_REDIRECT:
4326 case XDP_TX: 4340 case XDP_TX: