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When querying the local or foreign address from an IP socket, acquire

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only a read lock on the inpcb.

When an external module requests a read lock, acquire only a read lock.

MFC after:	3 months
This commit is contained in:
Robert Watson 2008-04-19 14:34:38 +00:00
parent b27c1c8db7
commit a69042a5be
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=178318
1 changed files with 6 additions and 6 deletions
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12
sys/netinet/in_pcb.c
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@ -780,10 +780,10 @@ in_getsockaddr(struct socket *so, struct sockaddr **nam)
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("in_getsockaddr: inp == NULL"));
INP_WLOCK(inp);
INP_RLOCK(inp);
port = inp->inp_lport;
addr = inp->inp_laddr;
INP_WUNLOCK(inp);
INP_RUNLOCK(inp);
*nam = in_sockaddr(port, &addr);
return 0;
@ -799,10 +799,10 @@ in_getpeeraddr(struct socket *so, struct sockaddr **nam)
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("in_getpeeraddr: inp == NULL"));
INP_WLOCK(inp);
INP_RLOCK(inp);
port = inp->inp_fport;
addr = inp->inp_faddr;
INP_WUNLOCK(inp);
INP_RUNLOCK(inp);
*nam = in_sockaddr(port, &addr);
return 0;
@ -1228,14 +1228,14 @@ void
inp_rlock(struct inpcb *inp)
{
INP_WLOCK(inp);
INP_RLOCK(inp);
}
void
inp_runlock(struct inpcb *inp)
{
INP_WUNLOCK(inp);
INP_RUNLOCK(inp);
}
#ifdef INVARIANTS