net: add skb functions to process remote checksum offload

[firefly-linux-kernel-4.4.55.git] / net / ipv4 / fou.c

diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c
index 3bc0cf07661c43fd6bcd81d65177680168a07f32..92ddea1e645732118d982685c4bab5b2d6c03641 100644 (file)
--- a/net/ipv4/fou.c
+++ b/net/ipv4/fou.c
@@ -70,7 +70,6 @@ static struct guehdr *gue_remcsum(struct sk_buff *skb, struct guehdr *guehdr,
        size_t start = ntohs(pd[0]);
        size_t offset = ntohs(pd[1]);
        size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start);
-       __wsum delta;
 
        if (skb->remcsum_offload) {
                /* Already processed in GRO path */
@@ -82,14 +81,7 @@ static struct guehdr *gue_remcsum(struct sk_buff *skb, struct guehdr *guehdr,
                return NULL;
        guehdr = (struct guehdr *)&udp_hdr(skb)[1];
 
-       if (unlikely(skb->ip_summed != CHECKSUM_COMPLETE))
-               __skb_checksum_complete(skb);
-
-       delta = remcsum_adjust((void *)guehdr + hdrlen,
-                              skb->csum, start, offset);
-
-       /* Adjust skb->csum since we changed the packet */
-       skb->csum = csum_add(skb->csum, delta);
+       skb_remcsum_process(skb, (void *)guehdr + hdrlen, start, offset);
 
        return guehdr;
 }
@@ -228,7 +220,6 @@ static struct guehdr *gue_gro_remcsum(struct sk_buff *skb, unsigned int off,
        size_t start = ntohs(pd[0]);
        size_t offset = ntohs(pd[1]);
        size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start);
-       __wsum delta;
 
        if (skb->remcsum_offload)
                return guehdr;
@@ -243,12 +234,7 @@ static struct guehdr *gue_gro_remcsum(struct sk_buff *skb, unsigned int off,
                        return NULL;
        }
 
-       delta = remcsum_adjust((void *)guehdr + hdrlen,
-                              NAPI_GRO_CB(skb)->csum, start, offset);
-
-       /* Adjust skb->csum since we changed the packet */
-       skb->csum = csum_add(skb->csum, delta);
-       NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta);
+       skb_gro_remcsum_process(skb, (void *)guehdr + hdrlen, start, offset);
 
        skb->remcsum_offload = 1;