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Deal with a problem where ephemeral port shortage would case a PCB's

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local address to be set, causing all further attemps to bind that PCB
to fail.  From Koji Imada, PR #3857.
This commit is contained in:
thorpej 1997-11-20 04:53:37 +00:00
parent e78682a0e2
commit ad1ef53725
1 changed files with 15 additions and 3 deletions
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18
sys/netinet/in_pcb.c
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@ -1,4 +1,4 @@
/* $NetBSD: in_pcb.c,v 1.39 1997/10/14 00:52:49 matt Exp $ */
/* $NetBSD: in_pcb.c,v 1.40 1997/11/20 04:53:37 thorpej Exp $ */
/*
* Copyright (c) 1982, 1986, 1991, 1993
@ -185,6 +185,8 @@ noname:
if (!in_pcblookup_port(table, inp->inp_laddr,
htons(lport), wild))
goto found;
if (!in_nullhost(inp->inp_laddr))
inp->inp_laddr.s_addr = INADDR_ANY;
return (EAGAIN);
found:
table->inpt_lastport = lport;
@ -210,6 +212,7 @@ in_pcbconnect(v, nam)
struct in_ifaddr *ia;
struct sockaddr_in *ifaddr = NULL;
register struct sockaddr_in *sin = mtod(nam, struct sockaddr_in *);
int error;
if (nam->m_len != sizeof (*sin))
return (EINVAL);
@ -315,9 +318,18 @@ in_pcbconnect(v, nam)
inp->inp_lport) != 0)
return (EADDRINUSE);
if (in_nullhost(inp->inp_laddr)) {
if (inp->inp_lport == 0)
(void)in_pcbbind(inp, (struct mbuf *)0,
if (inp->inp_lport == 0) {
error = in_pcbbind(inp, (struct mbuf *)0,
(struct proc *)0);
/*
* This used to ignore the return value
* completely, but we need to check for
* ephemeral port shortage.
* XXX Should we check for other errors, too?
*/
if (error == EAGAIN)
return (error);
}
inp->inp_laddr = ifaddr->sin_addr;
}
inp->inp_faddr = sin->sin_addr;