Author: bz
Date: Sat Feb 20 22:09:48 2010
New Revision: 204145
URL: http://svn.freebsd.org/changeset/base/204145
Log:
Start to implement ifnet DDB support:
- 'show ifnets' prints a list of ifnet *s per virtual network stack,
- 'show ifnet <struct ifnet *>' prints fields matching the given ifp.
We do not yet print the complete set of fields and might want to
factor this out to an extra if_debug.c file in case this grows
a lot[1]. We may also want to grow 'show ifnet <if_xname>' support[1].
Sponsored by: ISPsystem
Suggested by: rwatson [1]
Reviewed by: rwatson
MFC after: 5 days
Modified:
head/sys/net/if.c
Modified: head/sys/net/if.c
==============================================================================
--- head/sys/net/if.c Sat Feb 20 22:01:24 2010 (r204144)
+++ head/sys/net/if.c Sat Feb 20 22:09:48 2010 (r204145)
@@ -34,6 +34,7 @@
#include "opt_inet6.h"
#include "opt_inet.h"
#include "opt_carp.h"
+#include "opt_ddb.h"
#include <sys/param.h>
#include <sys/types.h>
@@ -62,6 +63,10 @@
#include <machine/stdarg.h>
#include <vm/uma.h>
+#ifdef DDB
+#include <ddb/ddb.h>
+#endif
+
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_clone.h>
@@ -3331,3 +3336,79 @@ if_deregister_com_alloc(u_char type)
if_com_alloc[type] = NULL;
if_com_free[type] = NULL;
}
+
+#ifdef DDB
+static void
+if_show_ifnet(struct ifnet *ifp)
+{
+
+ if (ifp == NULL)
+ return;
+ db_printf("%s:\n", ifp->if_xname);
+#define IF_DB_PRINTF(f, e) db_printf(" %s = " f "\n", #e,
ifp->e);
+ IF_DB_PRINTF("%s", if_dname);
+ IF_DB_PRINTF("%d", if_dunit);
+ IF_DB_PRINTF("%s", if_description);
+ IF_DB_PRINTF("%u", if_index);
+ IF_DB_PRINTF("%u", if_refcount);
+ IF_DB_PRINTF("%d", if_index_reserved);
+ IF_DB_PRINTF("%p", if_softc);
+ IF_DB_PRINTF("%p", if_l2com);
+ IF_DB_PRINTF("%p", if_vnet);
+ IF_DB_PRINTF("%p", if_home_vnet);
+ IF_DB_PRINTF("%p", if_addr);
+ IF_DB_PRINTF("%p", if_llsoftc);
+ IF_DB_PRINTF("%p", if_label);
+ IF_DB_PRINTF("%u", if_pcount);
+ IF_DB_PRINTF("0x%08x", if_flags);
+ IF_DB_PRINTF("0x%08x", if_drv_flags);
+ IF_DB_PRINTF("0x%08x", if_capabilities);
+ IF_DB_PRINTF("0x%08x", if_capenable);
+ IF_DB_PRINTF("%p", if_snd.ifq_head);
+ IF_DB_PRINTF("%p", if_snd.ifq_tail);
+ IF_DB_PRINTF("%d", if_snd.ifq_len);
+ IF_DB_PRINTF("%d", if_snd.ifq_maxlen);
+ IF_DB_PRINTF("%d", if_snd.ifq_drops);
+ IF_DB_PRINTF("%p", if_snd.ifq_drv_head);
+ IF_DB_PRINTF("%p", if_snd.ifq_drv_tail);
+ IF_DB_PRINTF("%d", if_snd.ifq_drv_len);
+ IF_DB_PRINTF("%d", if_snd.ifq_drv_maxlen);
+ IF_DB_PRINTF("%d", if_snd.altq_type);
+ IF_DB_PRINTF("%x", if_snd.altq_flags);
+#undef IF_DB_PRINTF
+}
+
+DB_SHOW_COMMAND(ifnet, db_show_ifnet)
+{
+
+ if (!have_addr) {
+ db_printf("usage: show ifnet <struct ifnet *>\n");
+ return;
+ }
+
+ if_show_ifnet((struct ifnet *)addr);
+}
+
+DB_SHOW_COMMAND(ifnets, db_show_ifnets)
+{
+ VNET_ITERATOR_DECL(vnet_iter);
+ struct ifnet *ifp;
+ u_short idx;
+
+ VNET_FOREACH(vnet_iter) {
+ CURVNET_SET_QUIET(vnet_iter);
+#ifdef VIMAGE
+ db_printf("vnet=%p\n", curvnet);
+#endif
+ for (idx = 1; idx <= V_if_index; idx++) {
+ ifp = V_ifindex_table[idx].ife_ifnet;
+ if (ifp == NULL)
+ continue;
+ db_printf( "%20s ifp=%p\n", ifp->if_xname, ifp);
+ if (db_pager_quit)
+ break;
+ }
+ CURVNET_RESTORE();
+ }
+}
+#endif
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