From 7c2f3cb964109929cba76f81dc44a1886ab5d643 Mon Sep 17 00:00:00 2001
From: Jamie Gritton <jamie@FreeBSD.org>
Date: Thu, 5 Feb 2009 14:25:53 +0000
Subject: [PATCH] Remove redundant calls of prison_local_ip4 in
 in_pcbbind_setup, and of prison_local_ip6 in in6_pcbbind.

Approved by:	bz (mentor)
---
 sys/netinet/in_pcb.c   | 15 ++++-----------
 sys/netinet6/in6_pcb.c | 12 +++++-------
 2 files changed, 9 insertions(+), 18 deletions(-)

diff --git a/sys/netinet/in_pcb.c b/sys/netinet/in_pcb.c
index 25494cfbfb9..3014bc3fe74 100644
--- a/sys/netinet/in_pcb.c
+++ b/sys/netinet/in_pcb.c
@@ -313,7 +313,10 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
 		return (EINVAL);
 	if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
 		wild = INPLOOKUP_WILDCARD;
-	if (nam) {
+	if (nam == NULL) {
+		if ((error = prison_local_ip4(cred, &laddr)) != 0)
+			return (error);
+	} else {
 		sin = (struct sockaddr_in *)nam;
 		if (nam->sa_len != sizeof (*sin))
 			return (EINVAL);
@@ -392,9 +395,6 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
 				     t->inp_cred->cr_uid))
 					return (EADDRINUSE);
 			}
-			error = prison_local_ip4(cred, &sin->sin_addr);
-			if (error)
-				return (error);
 			t = in_pcblookup_local(pcbinfo, sin->sin_addr,
 			    lport, wild, cred);
 			if (t && (t->inp_vflag & INP_TIMEWAIT)) {
@@ -428,10 +428,6 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
 		u_short first, last, aux;
 		int count;
 
-		error = prison_local_ip4(cred, &laddr);
-		if (error)
-			return (error);
-
 		if (inp->inp_flags & INP_HIGHPORT) {
 			first = V_ipport_hifirstauto;	/* sysctl */
 			last  = V_ipport_hilastauto;
@@ -496,9 +492,6 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
 		} while (in_pcblookup_local(pcbinfo, laddr,
 		    lport, wild, cred));
 	}
-	error = prison_local_ip4(cred, &laddr);
-	if (error)
-		return (error);
 	*laddrp = laddr.s_addr;
 	*lportp = lport;
 	return (0);
diff --git a/sys/netinet6/in6_pcb.c b/sys/netinet6/in6_pcb.c
index 13c55cdeb83..79cb21392ca 100644
--- a/sys/netinet6/in6_pcb.c
+++ b/sys/netinet6/in6_pcb.c
@@ -130,7 +130,11 @@ in6_pcbbind(register struct inpcb *inp, struct sockaddr *nam,
 		return (EINVAL);
 	if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
 		wild = INPLOOKUP_WILDCARD;
-	if (nam) {
+	if (nam == NULL) {
+		if ((error = prison_local_ip6(cred, &inp->in6p_laddr,
+		    ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
+			return (error);
+	} else {
 		sin6 = (struct sockaddr_in6 *)nam;
 		if (nam->sa_len != sizeof(*sin6))
 			return (EINVAL);
@@ -221,9 +225,6 @@ in6_pcbbind(register struct inpcb *inp, struct sockaddr *nam,
 						return (EADDRINUSE);
 				}
 			}
-			if ((error = prison_local_ip6(cred, &sin6->sin6_addr,
-			    ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
-				return (error);
 			t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr,
 			    lport, wild, cred);
 			if (t && (reuseport & ((t->inp_vflag & INP_TIMEWAIT) ?
@@ -256,9 +257,6 @@ in6_pcbbind(register struct inpcb *inp, struct sockaddr *nam,
 		}
 		inp->in6p_laddr = sin6->sin6_addr;
 	}
-	if ((error = prison_local_ip6(cred, &inp->in6p_laddr,
-	    ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
-		return (error);
 	if (lport == 0) {
 		if ((error = in6_pcbsetport(&inp->in6p_laddr, inp, cred)) != 0)
 			return (error);