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Add a show igi_list command to DDB to debug IGMP state.

Browse source 
Obtained from:	projects/vnet
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Bjoern A. Zeeb 2016-06-06 22:26:18 +00:00
parent 3af72c1124
commit b941cb8d60
2 changed files with 44 additions and 0 deletions
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7
share/man/man4/ddb.4
View file

@ -688,6 +688,13 @@ The second one is the name of the interrupt/trap handler.
Those functions are machine dependent.
.\"
.Pp
.It Ic show Cm igi_list Ar addr
Show information about the IGMP structure
.Vt struct igmp_ifsoftc
present at
.Ar addr .
.\"
.Pp
.It Ic show Cm inodedeps Op Ar addr
Show brief information about each inodedep structure.
If

37
sys/netinet/igmp.c
View file

@ -50,6 +50,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ddb.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
@ -64,6 +66,10 @@ __FBSDID("$FreeBSD$");
#include <sys/ktr.h>
#include <sys/condvar.h>
#ifdef DDB
#include <ddb/ddb.h>
#endif
#include <net/if.h>
#include <net/if_var.h>
#include <net/netisr.h>
@ -3641,6 +3647,37 @@ vnet_igmp_uninit(const void *unused __unused)
VNET_SYSUNINIT(vnet_igmp_uninit, SI_SUB_PSEUDO, SI_ORDER_ANY,
vnet_igmp_uninit, NULL);
#ifdef DDB
DB_SHOW_COMMAND(igi_list, db_show_igi_list)
{
struct igmp_ifsoftc *igi, *tigi;
LIST_HEAD(_igi_list, igmp_ifsoftc) *igi_head;
if (!have_addr) {
db_printf("usage: show igi_list <addr>\n");
return;
}
igi_head = (struct _igi_list *)addr;
LIST_FOREACH_SAFE(igi, igi_head, igi_link, tigi) {
db_printf("igmp_ifsoftc %p:\n", igi);
db_printf(" ifp %p\n", igi->igi_ifp);
db_printf(" version %u\n", igi->igi_version);
db_printf(" v1_timer %u\n", igi->igi_v1_timer);
db_printf(" v2_timer %u\n", igi->igi_v2_timer);
db_printf(" v3_timer %u\n", igi->igi_v3_timer);
db_printf(" flags %#x\n", igi->igi_flags);
db_printf(" rv %u\n", igi->igi_rv);
db_printf(" qi %u\n", igi->igi_qi);
db_printf(" qri %u\n", igi->igi_qri);
db_printf(" uri %u\n", igi->igi_uri);
/* SLIST_HEAD(,in_multi) igi_relinmhead */
/* struct mbufq igi_gq; */
db_printf("\n");
}
}
#endif
static int
igmp_modevent(module_t mod, int type, void *unused __unused)
{