| Message ID | 1327317729.2525.16.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
From: Eric Dumazet <eric.dumazet@gmail.com> Date: Mon, 23 Jan 2012 12:22:09 +0100 > tg3_start_xmit() makes the wrong assumption for TSOV6 that skb->head > doesnt include any payload data. > > if (skb_is_gso_v6(skb)) > hdr_len = skb_headlen(skb) - ETH_HLEN; > > This is not true anymore after commit f07d960df3 (tcp: avoid frag > allocation for small frames) > > We should instead use : skb_transport_offset(skb) + tcp_hdrlen(skb) > > Its also true for IPv4 > > Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> > CC: Matt Carlson <mcarlson@broadcom.com> > CC: Michael Chan <mchan@broadcom.com> > --- > I dont have a compatable hardware (5755_PLUS ?) so please guys test > this... I've applied this, if testing finds problems we can fix it up or revert. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index d529af9..a1f2e0f 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -6667,14 +6667,9 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev) iph = ip_hdr(skb); tcp_opt_len = tcp_optlen(skb); - if (skb_is_gso_v6(skb)) { - hdr_len = skb_headlen(skb) - ETH_HLEN; - } else { - u32 ip_tcp_len; - - ip_tcp_len = ip_hdrlen(skb) + sizeof(struct tcphdr); - hdr_len = ip_tcp_len + tcp_opt_len; + hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb) - ETH_HLEN; + if (!skb_is_gso_v6(skb)) { iph->check = 0; iph->tot_len = htons(mss + hdr_len); }
tg3_start_xmit() makes the wrong assumption for TSOV6 that skb->head doesnt include any payload data. if (skb_is_gso_v6(skb)) hdr_len = skb_headlen(skb) - ETH_HLEN; This is not true anymore after commit f07d960df3 (tcp: avoid frag allocation for small frames) We should instead use : skb_transport_offset(skb) + tcp_hdrlen(skb) Its also true for IPv4 Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Matt Carlson <mcarlson@broadcom.com> CC: Michael Chan <mchan@broadcom.com> --- I dont have a compatable hardware (5755_PLUS ?) so please guys test this... drivers/net/ethernet/broadcom/tg3.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html