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Drop read lock on udbinfo earlier during delivery to the last matching

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UDP socket for a datagram; the inpcb read lock is sufficient to provide
inpcb stability during udp_append().

MFC after:	1 month
This commit is contained in:
Robert Watson 2008-07-07 09:26:52 +00:00
parent f11c35082b
commit 10cc62b7a6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=180338
1 changed files with 5 additions and 3 deletions
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8
sys/netinet/udp_usrreq.c
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@ -542,11 +542,13 @@ udp_input(struct mbuf *m, int off)
* Check the minimum TTL for socket.
*/
INP_RLOCK(inp);
if (inp->inp_ip_minttl && inp->inp_ip_minttl > ip->ip_ttl)
goto badheadlocked;
INP_INFO_RUNLOCK(&udbinfo);
if (inp->inp_ip_minttl && inp->inp_ip_minttl > ip->ip_ttl) {
INP_RUNLOCK(inp);
goto badunlocked;
}
udp_append(inp, ip, m, iphlen + sizeof(struct udphdr), &udp_in);
INP_RUNLOCK(inp);
INP_INFO_RUNLOCK(&udbinfo);
return;
badheadlocked: