svn commit: r218559 - in head/sys: kern net

[Bjoern A. Zeeb]

Author: bz
Date: Fri Feb 11 13:27:00 2011
New Revision: 218559
URL: http://svn.freebsd.org/changeset/base/218559

Log:
  Mfp4 CH=177255:
  
    Make VNET_ASSERT() available with either VNET_DEBUG or INVARIANTS.
  
    Change the syntax to match KASSERT() to allow more flexible panic
    messages rather than having a printf with hardcoded arguments
    before panic.
  
    Adjust the few assertions we have to the new format (and enhance
    the output).
  
    Sponsored by: The FreeBSD Foundation
    Sponsored by: CK Software GmbH
    Reviewed by:	jhb
  
  MFC after:	2 weeks

Modified:
  head/sys/kern/uipc_socket.c
  head/sys/net/if.c
  head/sys/net/netisr.c
  head/sys/net/vnet.h

Modified: head/sys/kern/uipc_socket.c
==============================================================================
--- head/sys/kern/uipc_socket.c	Fri Feb 11 13:18:00 2011	(r218558)
+++ head/sys/kern/uipc_socket.c	Fri Feb 11 13:27:00 2011	(r218559)
@@ -437,7 +437,8 @@ sonewconn(struct socket *head, int conns
 	if (over)
 #endif
 		return (NULL);
-	VNET_ASSERT(head->so_vnet);
+	VNET_ASSERT(head->so_vnet != NULL, ("%s:%d so_vnet is NULL, head=%p",
+	    __func__, __LINE__, head));
 	so = soalloc(head->so_vnet);
 	if (so == NULL)
 		return (NULL);

Modified: head/sys/net/if.c
==============================================================================
--- head/sys/net/if.c	Fri Feb 11 13:18:00 2011	(r218558)
+++ head/sys/net/if.c	Fri Feb 11 13:27:00 2011	(r218559)
@@ -378,8 +378,10 @@ static void
 vnet_if_uninit(const void *unused __unused)
 {
 
-	VNET_ASSERT(TAILQ_EMPTY(&V_ifnet));
-	VNET_ASSERT(TAILQ_EMPTY(&V_ifg_head));
+	VNET_ASSERT(TAILQ_EMPTY(&V_ifnet), ("%s:%d tailq &V_ifnet=%p "
+	    "not empty", __func__, __LINE__, &V_ifnet));
+	VNET_ASSERT(TAILQ_EMPTY(&V_ifg_head), ("%s:%d tailq &V_ifg_head=%p "
+	    "not empty", __func__, __LINE__, &V_ifg_head));
 
 	free((caddr_t)V_ifindex_table, M_IFNET);
 }

Modified: head/sys/net/netisr.c
==============================================================================
--- head/sys/net/netisr.c	Fri Feb 11 13:18:00 2011	(r218558)
+++ head/sys/net/netisr.c	Fri Feb 11 13:27:00 2011	(r218559)
@@ -647,7 +647,8 @@ netisr_process_workstream_proto(struct n
 		if (local_npw.nw_head == NULL)
 			local_npw.nw_tail = NULL;
 		local_npw.nw_len--;
-		VNET_ASSERT(m->m_pkthdr.rcvif != NULL);
+		VNET_ASSERT(m->m_pkthdr.rcvif != NULL,
+		    ("%s:%d rcvif == NULL: m=%p", __func__, __LINE__, m));
 		CURVNET_SET(m->m_pkthdr.rcvif->if_vnet);
 		netisr_proto[proto].np_handler(m);
 		CURVNET_RESTORE();

Modified: head/sys/net/vnet.h
==============================================================================
--- head/sys/net/vnet.h	Fri Feb 11 13:18:00 2011	(r218558)
+++ head/sys/net/vnet.h	Fri Feb 11 13:27:00 2011	(r218559)
@@ -118,18 +118,23 @@ void	vnet_destroy(struct vnet *vnet);
  * Various macros -- get and set the current network stack, but also
  * assertions.
  */
+#if defined(INVARIANTS) || defined(VNET_DEBUG)
+#define	VNET_ASSERT(exp, msg)	do {					\
+	if (!(exp))							\
+		panic msg;						\
+} while (0)
+#else
+#define	VNET_ASSERT(exp, msg)	do {					\
+} while (0)
+#endif
+
 #ifdef VNET_DEBUG
 void vnet_log_recursion(struct vnet *, const char *, int);
 
-#define	VNET_ASSERT(condition)						\
-	if (!(condition)) {						\
-		printf("VNET_ASSERT @ %s:%d %s():\n",			\
-			__FILE__, __LINE__, __func__);			\
-		panic(#condition);					\
-	}
-
 #define	CURVNET_SET_QUIET(arg)						\
-	VNET_ASSERT((arg)->vnet_magic_n == VNET_MAGIC_N);		\
+	VNET_ASSERT((arg) != NULL && (arg)->vnet_magic_n == VNET_MAGIC_N, \
+	    ("CURVNET_SET at %s:%d %s() curvnet=%p vnet=%p",		\
+	    __FILE__, __LINE__, __func__, curvnet, (arg)));		\
 	struct vnet *saved_vnet = curvnet;				\
 	const char *saved_vnet_lpush = curthread->td_vnet_lpush;	\
 	curvnet = arg;							\
@@ -143,12 +148,13 @@ void vnet_log_recursion(struct vnet *, c
 #define	CURVNET_SET(arg)	CURVNET_SET_VERBOSE(arg)
  
 #define	CURVNET_RESTORE()						\
-	VNET_ASSERT(saved_vnet == NULL ||				\
-		    saved_vnet->vnet_magic_n == VNET_MAGIC_N);		\
+	VNET_ASSERT(curvnet != NULL && (saved_vnet == NULL ||		\
+	    saved_vnet->vnet_magic_n == VNET_MAGIC_N),			\
+	    ("CURVNET_RESTORE at %s:%d %s() curvnet=%p saved_vnet=%p",	\
+	    __FILE__, __LINE__, __func__, curvnet, saved_vnet));	\
 	curvnet = saved_vnet;						\
 	curthread->td_vnet_lpush = saved_vnet_lpush;
 #else /* !VNET_DEBUG */
-#define	VNET_ASSERT(condition)
 
 #define	CURVNET_SET(arg)						\
 	struct vnet *saved_vnet = curvnet;				\
@@ -351,7 +357,7 @@ do {									\
  */
 #define	curvnet			NULL
 
-#define	VNET_ASSERT(condition)
+#define	VNET_ASSERT(exp, msg)
 #define	CURVNET_SET(arg)
 #define	CURVNET_SET_QUIET(arg)
 #define	CURVNET_RESTORE()