svn commit: r264426 - stable/8/sys/netsmb

[Devin Teske]

Author: dteske
Date: Sun Apr 13 22:16:18 2014
New Revision: 264426
URL: http://svnweb.freebsd.org/changeset/base/264426

Log:
  MFC r250243:
  
  If the kernel is compiled with VMIMAGE support, the first attempt of
  mounting smbfs share will cause a panic. Fix setting/restoring vnet
  context when needed.
  
  PR:		kern/168077
  Submitted by:	dteske

Modified:
  stable/8/sys/netsmb/smb_trantcp.c
Directory Properties:
  stable/8/   (props changed)
  stable/8/sys/   (props changed)
  stable/8/sys/netsmb/   (props changed)

Modified: stable/8/sys/netsmb/smb_trantcp.c
==============================================================================
--- stable/8/sys/netsmb/smb_trantcp.c	Sun Apr 13 22:00:50 2014	(r264425)
+++ stable/8/sys/netsmb/smb_trantcp.c	Sun Apr 13 22:16:18 2014	(r264426)
@@ -52,6 +52,7 @@ __FBSDID("$FreeBSD$");
 
 #include <net/if.h>
 #include <net/route.h>
+#include <net/vnet.h>
 
 #include <netinet/in.h>
 #include <netinet/tcp.h>
@@ -85,13 +86,17 @@ static int
 nb_setsockopt_int(struct socket *so, int level, int name, int val)
 {
 	struct sockopt sopt;
+	int error;
 
 	bzero(&sopt, sizeof(sopt));
 	sopt.sopt_level = level;
 	sopt.sopt_name = name;
 	sopt.sopt_val = &val;
 	sopt.sopt_valsize = sizeof(val);
-	return sosetopt(so, &sopt);
+	CURVNET_SET(so->so_vnet);
+	error = sosetopt(so, &sopt);
+	CURVNET_RESTORE();
+	return error;
 }
 
 static int
@@ -292,8 +297,10 @@ nbssn_recvhdr(struct nbpcb *nbp, int *le
 	auio.uio_offset = 0;
 	auio.uio_resid = sizeof(len);
 	auio.uio_td = td;
+	CURVNET_SET(so->so_vnet);
 	error = soreceive(so, (struct sockaddr **)NULL, &auio,
 	    (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
+	CURVNET_RESTORE();
 	if (error)
 		return error;
 	if (auio.uio_resid > 0) {
@@ -377,8 +384,10 @@ nbssn_recv(struct nbpcb *nbp, struct mbu
 			 */
 			do {
 				rcvflg = MSG_WAITALL;
+				CURVNET_SET(so->so_vnet);
 				error = soreceive(so, (struct sockaddr **)NULL,
 				    &auio, &tm, (struct mbuf **)NULL, &rcvflg);
+				CURVNET_RESTORE();
 			} while (error == EWOULDBLOCK || error == EINTR ||
 				 error == ERESTART);
 			if (error)