diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp_offload.c | 39 | ||||
| -rw-r--r-- | net/ipv6/tcpv6_offload.c | 37 |
2 files changed, 47 insertions, 29 deletions
diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c index 72912533a191..7cd12b0458ff 100644 --- a/net/ipv4/tcp_offload.c +++ b/net/ipv4/tcp_offload.c @@ -29,6 +29,28 @@ static void tcp_gso_tstamp(struct sk_buff *skb, unsigned int ts_seq, } } +struct sk_buff *tcp4_gso_segment(struct sk_buff *skb, + netdev_features_t features) +{ + if (!pskb_may_pull(skb, sizeof(struct tcphdr))) + return ERR_PTR(-EINVAL); + + if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) { + const struct iphdr *iph = ip_hdr(skb); + struct tcphdr *th = tcp_hdr(skb); + + /* Set up checksum pseudo header, usually expect stack to + * have done this already. + */ + + th->check = 0; + skb->ip_summed = CHECKSUM_PARTIAL; + __tcp_v4_send_check(skb, iph->saddr, iph->daddr); + } + + return tcp_gso_segment(skb, features); +} + struct sk_buff *tcp_gso_segment(struct sk_buff *skb, netdev_features_t features) { @@ -44,9 +66,6 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb, __sum16 newcheck; bool ooo_okay, copy_destructor; - if (!pskb_may_pull(skb, sizeof(*th))) - goto out; - th = tcp_hdr(skb); thlen = th->doff * 4; if (thlen < sizeof(*th)) @@ -271,18 +290,6 @@ EXPORT_SYMBOL(tcp_gro_complete); static int tcp_v4_gso_send_check(struct sk_buff *skb) { - const struct iphdr *iph; - struct tcphdr *th; - - if (!pskb_may_pull(skb, sizeof(*th))) - return -EINVAL; - - iph = ip_hdr(skb); - th = tcp_hdr(skb); - - th->check = 0; - skb->ip_summed = CHECKSUM_PARTIAL; - __tcp_v4_send_check(skb, iph->saddr, iph->daddr); return 0; } @@ -314,7 +321,7 @@ static int tcp4_gro_complete(struct sk_buff *skb, int thoff) static const struct net_offload tcpv4_offload = { .callbacks = { .gso_send_check = tcp_v4_gso_send_check, - .gso_segment = tcp_gso_segment, + .gso_segment = tcp4_gso_segment, .gro_receive = tcp4_gro_receive, .gro_complete = tcp4_gro_complete, }, diff --git a/net/ipv6/tcpv6_offload.c b/net/ipv6/tcpv6_offload.c index dbb3d9262bf6..96253154db3a 100644 --- a/net/ipv6/tcpv6_offload.c +++ b/net/ipv6/tcpv6_offload.c @@ -17,18 +17,6 @@ static int tcp_v6_gso_send_check(struct sk_buff *skb) { - const struct ipv6hdr *ipv6h; - struct tcphdr *th; - - if (!pskb_may_pull(skb, sizeof(*th))) - return -EINVAL; - - ipv6h = ipv6_hdr(skb); - th = tcp_hdr(skb); - - th->check = 0; - skb->ip_summed = CHECKSUM_PARTIAL; - __tcp_v6_send_check(skb, &ipv6h->saddr, &ipv6h->daddr); return 0; } @@ -58,10 +46,33 @@ static int tcp6_gro_complete(struct sk_buff *skb, int thoff) return tcp_gro_complete(skb); } +struct sk_buff *tcp6_gso_segment(struct sk_buff *skb, + netdev_features_t features) +{ + struct tcphdr *th; + + if (!pskb_may_pull(skb, sizeof(*th))) + return ERR_PTR(-EINVAL); + + if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) { + const struct ipv6hdr *ipv6h = ipv6_hdr(skb); + struct tcphdr *th = tcp_hdr(skb); + + /* Set up pseudo header, usually expect stack to have done + * this. + */ + + th->check = 0; + skb->ip_summed = CHECKSUM_PARTIAL; + __tcp_v6_send_check(skb, &ipv6h->saddr, &ipv6h->daddr); + } + + return tcp_gso_segment(skb, features); +} static const struct net_offload tcpv6_offload = { .callbacks = { .gso_send_check = tcp_v6_gso_send_check, - .gso_segment = tcp_gso_segment, + .gso_segment = tcp6_gso_segment, .gro_receive = tcp6_gro_receive, .gro_complete = tcp6_gro_complete, }, |