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Add more logging points for failures in syncache_socket() to

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report when a new socket couldn't be created because one of
in_pcbinshash(), in6_pcbconnect() or in_pcbconnect() failed.

Logging is conditional on net.inet.tcp.log_debug being enabled.

MFC after:	1 week
This commit is contained in:
Andre Oppermann 2010-08-15 09:30:13 +00:00
parent 2d8084397f
commit 943044b01f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=211327
1 changed files with 24 additions and 5 deletions
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29
sys/netinet/tcp_syncache.c
View File

@ -627,6 +627,7 @@ syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
struct inpcb *inp = NULL;
struct socket *so;
struct tcpcb *tp;
int error = 0;
char *s;
INP_INFO_WLOCK_ASSERT(&V_tcbinfo);
@ -675,7 +676,7 @@ syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
}
#endif
inp->inp_lport = sc->sc_inc.inc_lport;
if (in_pcbinshash(inp) != 0) {
if ((error = in_pcbinshash(inp)) != 0) {
/*
* Undo the assignments above if we failed to
* put the PCB on the hash lists.
@ -687,6 +688,12 @@ syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
#endif
inp->inp_laddr.s_addr = INADDR_ANY;
inp->inp_lport = 0;
if ((s = tcp_log_addrs(&sc->sc_inc, NULL, NULL, NULL))) {
log(LOG_DEBUG, "%s; %s: in_pcbinshash failed "
"with error %i\n",
s, __func__, error);
free(s, M_TCPLOG);
}
goto abort;
}
#ifdef IPSEC
@ -721,9 +728,15 @@ syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
laddr6 = inp->in6p_laddr;
if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
inp->in6p_laddr = sc->sc_inc.inc6_laddr;
if (in6_pcbconnect(inp, (struct sockaddr *)&sin6,
thread0.td_ucred)) {
if ((error = in6_pcbconnect(inp, (struct sockaddr *)&sin6,
thread0.td_ucred)) != 0) {
inp->in6p_laddr = laddr6;
if ((s = tcp_log_addrs(&sc->sc_inc, NULL, NULL, NULL))) {
log(LOG_DEBUG, "%s; %s: in6_pcbconnect failed "
"with error %i\n",
s, __func__, error);
free(s, M_TCPLOG);
}
goto abort;
}
/* Override flowlabel from in6_pcbconnect. */
@ -750,9 +763,15 @@ syncache_socket(struct syncache *sc, struct socket *lso, struct mbuf *m)
laddr = inp->inp_laddr;
if (inp->inp_laddr.s_addr == INADDR_ANY)
inp->inp_laddr = sc->sc_inc.inc_laddr;
if (in_pcbconnect(inp, (struct sockaddr *)&sin,
thread0.td_ucred)) {
if ((error = in_pcbconnect(inp, (struct sockaddr *)&sin,
thread0.td_ucred)) != 0) {
inp->inp_laddr = laddr;
if ((s = tcp_log_addrs(&sc->sc_inc, NULL, NULL, NULL))) {
log(LOG_DEBUG, "%s; %s: in_pcbconnect failed "
"with error %i\n",
s, __func__, error);
free(s, M_TCPLOG);
}
goto abort;
}
}