diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/skbuff.c | 4 | ||||
| -rw-r--r-- | net/ipv4/af_inet.c | 1 | ||||
| -rw-r--r-- | net/ipv4/tcp_offload.c | 1 | ||||
| -rw-r--r-- | net/ipv4/udp_offload.c | 18 | ||||
| -rw-r--r-- | net/ipv6/ip6_offload.c | 1 | ||||
| -rw-r--r-- | net/ipv6/udp_offload.c | 1 |
6 files changed, 22 insertions, 4 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index e48e5c02e877..700189604f3d 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -3013,7 +3013,7 @@ struct sk_buff *skb_segment(struct sk_buff *head_skb, if (nskb->len == len + doffset) goto perform_csum_check; - if (!sg) { + if (!sg && !nskb->remcsum_offload) { nskb->ip_summed = CHECKSUM_NONE; nskb->csum = skb_copy_and_csum_bits(head_skb, offset, skb_put(nskb, len), @@ -3085,7 +3085,7 @@ skip_fraglist: nskb->truesize += nskb->data_len; perform_csum_check: - if (!csum) { + if (!csum && !nskb->remcsum_offload) { nskb->csum = skb_checksum(nskb, doffset, nskb->len - doffset, 0); nskb->ip_summed = CHECKSUM_NONE; diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 8b7fe5b03906..ed2c672c5b01 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1222,6 +1222,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, SKB_GSO_TCPV6 | SKB_GSO_UDP_TUNNEL | SKB_GSO_UDP_TUNNEL_CSUM | + SKB_GSO_TUNNEL_REMCSUM | SKB_GSO_MPLS | 0))) goto out; diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c index 5b90f2f447a5..a1b2a5624f91 100644 --- a/net/ipv4/tcp_offload.c +++ b/net/ipv4/tcp_offload.c @@ -97,6 +97,7 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb, SKB_GSO_MPLS | SKB_GSO_UDP_TUNNEL | SKB_GSO_UDP_TUNNEL_CSUM | + SKB_GSO_TUNNEL_REMCSUM | 0) || !(type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)))) goto out; diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c index a774711a88b9..0a5a70d0e84c 100644 --- a/net/ipv4/udp_offload.c +++ b/net/ipv4/udp_offload.c @@ -41,7 +41,8 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb, unsigned int oldlen; bool need_csum = !!(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM); - bool offload_csum = false, dont_encap = need_csum; + bool remcsum = !!(skb_shinfo(skb)->gso_type & SKB_GSO_TUNNEL_REMCSUM); + bool offload_csum = false, dont_encap = (need_csum || remcsum); oldlen = (u16)~skb->len; @@ -55,6 +56,7 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb, skb->mac_len = skb_inner_network_offset(skb); skb->protocol = new_protocol; skb->encap_hdr_csum = need_csum; + skb->remcsum_offload = remcsum; /* Try to offload checksum if possible */ offload_csum = !!(need_csum && @@ -108,11 +110,22 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb, uh->check = ~csum_fold((__force __wsum) ((__force u32)uh->check + (__force u32)delta)); - if (offload_csum) { skb->ip_summed = CHECKSUM_PARTIAL; skb->csum_start = skb_transport_header(skb) - skb->head; skb->csum_offset = offsetof(struct udphdr, check); + } else if (remcsum) { + /* Need to calculate checksum from scratch, + * inner checksums are never when doing + * remote_checksum_offload. + */ + + skb->csum = skb_checksum(skb, udp_offset, + skb->len - udp_offset, + 0); + uh->check = csum_fold(skb->csum); + if (uh->check == 0) + uh->check = CSUM_MANGLED_0; } else { uh->check = gso_make_checksum(skb, ~uh->check); @@ -192,6 +205,7 @@ static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb, if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY | SKB_GSO_UDP_TUNNEL | SKB_GSO_UDP_TUNNEL_CSUM | + SKB_GSO_TUNNEL_REMCSUM | SKB_GSO_IPIP | SKB_GSO_GRE | SKB_GSO_GRE_CSUM | SKB_GSO_MPLS) || diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c index a071563a7e6e..e9767079a360 100644 --- a/net/ipv6/ip6_offload.c +++ b/net/ipv6/ip6_offload.c @@ -78,6 +78,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, SKB_GSO_SIT | SKB_GSO_UDP_TUNNEL | SKB_GSO_UDP_TUNNEL_CSUM | + SKB_GSO_TUNNEL_REMCSUM | SKB_GSO_MPLS | SKB_GSO_TCPV6 | 0))) diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c index 6b8f543f6ac6..637ba2e438b7 100644 --- a/net/ipv6/udp_offload.c +++ b/net/ipv6/udp_offload.c @@ -42,6 +42,7 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, SKB_GSO_DODGY | SKB_GSO_UDP_TUNNEL | SKB_GSO_UDP_TUNNEL_CSUM | + SKB_GSO_TUNNEL_REMCSUM | SKB_GSO_GRE | SKB_GSO_GRE_CSUM | SKB_GSO_IPIP | |