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pf: add sctp multihome probe points

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Add probe points to allow us to probe when we add or remove multihome addresses.

Example use:
	pf:sctp:multihome:add
	{
		printf("Add tag %x address %x", arg0,
		    ((struct pf_sctp_source *)arg1)->addr.v4.s_addr);
	}

	pf:sctp:multihome:remove
	{
		printf("Remove tag %x address %x", arg0,
		    ((struct pf_sctp_source *)arg2)->addr.v4.s_addr);
	}

MFC after:	1 week
Sponsored by:	Orange Business Services
This commit is contained in:
Kristof Provost 2024-06-06 17:35:09 +02:00
parent 8ed5170c66
commit f042e15154
1 changed files with 9 additions and 1 deletions
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10
sys/netpfil/pf/pf.c
View file

@ -130,6 +130,10 @@ SDT_PROBE_DEFINE2(pf, ip, , bound_iface, "struct pf_kstate *",
"struct pfi_kkif *");
SDT_PROBE_DEFINE4(pf, sctp, multihome, test, "struct pfi_kkif *",
"struct pf_krule *", "struct mbuf *", "int");
SDT_PROBE_DEFINE2(pf, sctp, multihome, add, "uint32_t",
"struct pf_sctp_source *");
SDT_PROBE_DEFINE3(pf, sctp, multihome, remove, "uint32_t",
"struct pf_kstate *", "struct pf_sctp_source *");
SDT_PROBE_DEFINE3(pf, eth, test_rule, entry, "int", "struct ifnet *",
"struct mbuf *");
@ -6031,11 +6035,12 @@ pf_sctp_multihome_detach_addr(const struct pf_kstate *s)
key.v_tag = s->dst.scrub->pfss_v_tag;
ep = RB_FIND(pf_sctp_endpoints, &V_pf_sctp_endpoints, &key);
if (ep != NULL) {
/* XXX Actually remove! */
TAILQ_FOREACH_SAFE(i, &ep->sources, entry, tmp) {
if (pf_addr_cmp(&i->addr,
&s->key[PF_SK_WIRE]->addr[s->direction == PF_OUT],
s->key[PF_SK_WIRE]->af) == 0) {
SDT_PROBE3(pf, sctp, multihome, remove,
key.v_tag, s, i);
TAILQ_REMOVE(&ep->sources, i, entry);
free(i, M_PFTEMP);
break;
@ -6056,6 +6061,8 @@ pf_sctp_multihome_detach_addr(const struct pf_kstate *s)
if (pf_addr_cmp(&i->addr,
&s->key[PF_SK_WIRE]->addr[s->direction == PF_IN],
s->key[PF_SK_WIRE]->af) == 0) {
SDT_PROBE3(pf, sctp, multihome, remove,
key.v_tag, s, i);
TAILQ_REMOVE(&ep->sources, i, entry);
free(i, M_PFTEMP);
break;
@ -6113,6 +6120,7 @@ pf_sctp_multihome_add_addr(struct pf_pdesc *pd, struct pf_addr *a, uint32_t v_ta
i->af = pd->af;
memcpy(&i->addr, a, sizeof(*a));
TAILQ_INSERT_TAIL(&ep->sources, i, entry);
SDT_PROBE2(pf, sctp, multihome, add, v_tag, i);
PF_SCTP_ENDPOINTS_UNLOCK();
}