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Start to implement ifnet DDB support:

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- '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
This commit is contained in:
Bjoern A. Zeeb 2010-02-20 22:09:48 +00:00
parent 30b9cadca4
commit c9fdacdac8
1 changed files with 81 additions and 0 deletions
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81
sys/net/if.c
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@ -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