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Subjectlet's try this again, re: solaris tcp bug

My previous patch was buggered, try this one instead.
Sorry.

--- net/ipv4/tcp_output.c.~1~ Mon Feb 22 10:17:22 1999
+++ net/ipv4/tcp_output.c Fri Feb 26 13:19:42 1999
@@ -580,6 +580,19 @@
if(tp->af_specific->rebuild_header(sk))
return 1; /* Routing failure or similar. */

+ /* Solaris sucks. */
+ if(skb->len > 0 &&
+ (TCP_SKB_CB(skb)->flags & TCPCB_FLAG_FIN) &&
+ tp->snd_una == (TCP_SKB_CB(skb)->end_seq - 1)) {
+#if 1
+ printk("TCP: Doing Solaris hack for [%p:%08x:%04x:%08x]\n",
+ skb, sk->daddr, sk->dport, tp->snd_una);
+#endif
+ TCP_SKB_CB(skb)->seq = TCP_SKB_CB(skb)->end_seq - 1;
+ skb_trim(skb, 0);
+ skb->csum = 0;
+ }
+
/* Ok, we're gonna send it out, update state. */
TCP_SKB_CB(skb)->sacked |= TCPCB_SACKED_RETRANS;
tp->retrans_out++;
@@ -592,6 +605,7 @@
skb = skb_copy(skb, GFP_ATOMIC);
else
skb = skb_clone(skb, GFP_ATOMIC);
+
tcp_transmit_skb(sk, skb);

/* Update global TCP statistics and return success. */
-
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