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tcp: unalias tcp_skb_cb flags and ip_dsfield

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struct tcp_skb_cb contains a "flags" field containing either tcp flags
or IP dsfield depending on context (input or output path)

Introduce ip_dsfield to make the difference clear and ease maintenance.
If later we want to save space, we can union flags/ip_dsfield

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2011-09-27 02:20:08 -04:00 • committed by David S. Miller
parent 3f192795cf
commit b82d1bb4fd
4 changed files with 5 additions and 4 deletions
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2
net/ipv4/tcp_ipv4.c
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@ -1677,7 +1677,7 @@ int tcp_v4_rcv(struct sk_buff *skb)
skb->len - th->doff * 4);
TCP_SKB_CB(skb)->ack_seq = ntohl(th->ack_seq);
TCP_SKB_CB(skb)->when = 0;
TCP_SKB_CB(skb)->flags = iph->tos;
TCP_SKB_CB(skb)->ip_dsfield = ipv4_get_dsfield(iph);
TCP_SKB_CB(skb)->sacked = 0;
sk = __inet_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest);