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Message-ID: <1412140325.16704.31.camel@edumazet-glaptop2.roam.corp.google.com> Date: Tue, 30 Sep 2014 22:12:05 -0700 From: Eric Dumazet <eric.dumazet@...il.com> To: David Miller <davem@...emloft.net> Cc: Yuval.Mintz@...gic.com, therbert@...gle.com, netdev@...r.kernel.org Subject: [PATCH net-next] ipv4: mentions skb_gro_postpull_rcsum() in inet_gro_receive() From: Eric Dumazet <edumazet@...gle.com> Proper CHECKSUM_COMPLETE support needs to adjust skb->csum when we remove one header. Its done using skb_gro_postpull_rcsum() In the case of IPv4, we know that the adjustment is not really needed, because the checksum over IPv4 header is 0. Lets add a comment to ease code comprehension and avoid copy/paste errors. Signed-off-by: Eric Dumazet <edumazet@...gle.com> --- net/ipv4/af_inet.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 28e589c5f32d..92db7a69f2b9 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1369,6 +1369,9 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head, * immediately following this IP hdr. */ + /* Note : No need to call skb_gro_postpull_rcsum() here, + * as we already checked checksum over ipv4 header was 0 + */ skb_gro_pull(skb, sizeof(*iph)); skb_set_transport_header(skb, skb_gro_offset(skb)); -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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