diff options
Diffstat (limited to 'net/ipv4/tcp_offload.c')
| -rw-r--r-- | net/ipv4/tcp_offload.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c index 2dfac79dc78b..934f777f29d3 100644 --- a/net/ipv4/tcp_offload.c +++ b/net/ipv4/tcp_offload.c @@ -142,6 +142,7 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb, struct sk_buff *gso_skb = skb; __sum16 newcheck; bool ooo_okay, copy_destructor; + bool ecn_cwr_mask; __wsum delta; th = tcp_hdr(skb); @@ -201,6 +202,8 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb, newcheck = ~csum_fold(csum_add(csum_unfold(th->check), delta)); + ecn_cwr_mask = !!(skb_shinfo(gso_skb)->gso_type & SKB_GSO_TCP_ACCECN); + while (skb->next) { th->fin = th->psh = 0; th->check = newcheck; @@ -220,7 +223,8 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb, th = tcp_hdr(skb); th->seq = htonl(seq); - th->cwr = 0; + + th->cwr &= ecn_cwr_mask; } /* Following permits TCP Small Queues to work well with GSO : @@ -328,7 +332,7 @@ struct sk_buff *tcp_gro_receive(struct list_head *head, struct sk_buff *skb, th2 = tcp_hdr(p); flush = (__force int)(flags & TCP_FLAG_CWR); flush |= (__force int)((flags ^ tcp_flag_word(th2)) & - ~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH)); + ~(TCP_FLAG_FIN | TCP_FLAG_PSH)); flush |= (__force int)(th->ack_seq ^ th2->ack_seq); for (i = sizeof(*th); i < thlen; i += 4) flush |= *(u32 *)((u8 *)th + i) ^ @@ -404,7 +408,7 @@ void tcp_gro_complete(struct sk_buff *skb) shinfo->gso_segs = NAPI_GRO_CB(skb)->count; if (th->cwr) - shinfo->gso_type |= SKB_GSO_TCP_ECN; + shinfo->gso_type |= SKB_GSO_TCP_ACCECN; } EXPORT_SYMBOL(tcp_gro_complete); @@ -428,7 +432,7 @@ static void tcp4_check_fraglist_gro(struct list_head *head, struct sk_buff *skb, inet_get_iif_sdif(skb, &iif, &sdif); iph = skb_gro_network_header(skb); - net = dev_net(skb->dev); + net = dev_net_rcu(skb->dev); sk = __inet_lookup_established(net, net->ipv4.tcp_death_row.hashinfo, iph->saddr, th->source, iph->daddr, ntohs(th->dest), |