diff options
Diffstat (limited to 'net/ipv4/udp_offload.c')
| -rw-r--r-- | net/ipv4/udp_offload.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c index 6230cf4b0d2d..097060def7f0 100644 --- a/net/ipv4/udp_offload.c +++ b/net/ipv4/udp_offload.c @@ -39,8 +39,11 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb, * 16 bit length field due to the header being added outside of an * IP or IPv6 frame that was already limited to 64K - 1. */ - partial = csum_sub(csum_unfold(uh->check), - (__force __wsum)htonl(skb->len)); + if (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) + partial = (__force __wsum)uh->len; + else + partial = (__force __wsum)htonl(skb->len); + partial = csum_sub(csum_unfold(uh->check), partial); /* setup inner skb. */ skb->encapsulation = 0; @@ -89,7 +92,7 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb, udp_offset = outer_hlen - tnl_hlen; skb = segs; do { - __be16 len; + unsigned int len; if (remcsum) skb->ip_summed = CHECKSUM_NONE; @@ -107,14 +110,26 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb, skb_reset_mac_header(skb); skb_set_network_header(skb, mac_len); skb_set_transport_header(skb, udp_offset); - len = htons(skb->len - udp_offset); + len = skb->len - udp_offset; uh = udp_hdr(skb); - uh->len = len; + + /* If we are only performing partial GSO the inner header + * will be using a length value equal to only one MSS sized + * segment instead of the entire frame. + */ + if (skb_is_gso(skb)) { + uh->len = htons(skb_shinfo(skb)->gso_size + + SKB_GSO_CB(skb)->data_offset + + skb->head - (unsigned char *)uh); + } else { + uh->len = htons(len); + } if (!need_csum) continue; - uh->check = ~csum_fold(csum_add(partial, (__force __wsum)len)); + uh->check = ~csum_fold(csum_add(partial, + (__force __wsum)htonl(len))); if (skb->encapsulation || !offload_csum) { uh->check = gso_make_checksum(skb, ~uh->check); |