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Fix TCP retransmission

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-07-23 03:48:10 +02:00
parent 4ebb4c616f
commit 440694e3d3
1 changed files with 5 additions and 3 deletions
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8
grub-core/net/tcp.c
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@ -708,12 +708,14 @@ grub_net_recv_tcp_packet (struct grub_net_buff *nb,
for (unack = sock->unack_first; unack; unack = next)
{
grub_uint32_t seqnr;
struct tcphdr *unack_tcph;
next = unack->next;
seqnr = grub_be_to_cpu32 (((struct tcphdr *) unack->nb->data)
->seqnr);
seqnr += (nb->tail - nb->data
- (grub_be_to_cpu16 (tcph->flags) >> 12) * 4);
if (grub_be_to_cpu16 (tcph->flags) & TCP_FIN)
unack_tcph = (struct tcphdr *) unack->nb->data;
seqnr += (unack->nb->tail - unack->nb->data
- (grub_be_to_cpu16 (unack_tcph->flags) >> 12) * 4);
if (grub_be_to_cpu16 (unack_tcph->flags) & TCP_FIN)
seqnr++;
if (seqnr > acked)