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if_ovpn: static probe points

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Sprinkle a few SDTs around if_ovpn to ease debugging.

Sponsored by:	Rubicon Communications, LLC ("Netgate")
This commit is contained in:
Kristof Provost 2022-05-12 21:48:23 +02:00
parent 08926ae328
commit b33308db39
1 changed files with 18 additions and 2 deletions
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20
sys/net/if_ovpn.c
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@ -42,6 +42,7 @@
#include <sys/priv.h>
#include <sys/protosw.h>
#include <sys/rmlock.h>
#include <sys/sdt.h>
#include <sys/smp.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
@ -216,6 +217,11 @@ VNET_DEFINE_STATIC(struct if_clone *, ovpn_cloner);
#define TO_IN(x) ((struct sockaddr_in *)(x))
#define TO_IN6(x) ((struct sockaddr_in6 *)(x))
SDT_PROVIDER_DEFINE(if_ovpn);
SDT_PROBE_DEFINE1(if_ovpn, tx, transmit, start, "struct mbuf *");
SDT_PROBE_DEFINE2(if_ovpn, tx, route, ip4, "struct in_addr *", "struct ovpn_kpeer *");
SDT_PROBE_DEFINE2(if_ovpn, tx, route, ip6, "struct in6_addr *", "struct ovpn_kpeer *");
static const char ovpnname[] = "ovpn";
static const char ovpngroupname[] = "openvpn";
@ -1636,12 +1642,16 @@ ovpn_route_peer(struct ovpn_softc *sc, struct mbuf **m0,
}
peer = ovpn_find_peer_by_ip(sc, *ip_dst);
SDT_PROBE2(if_ovpn, tx, route, ip4, ip_dst, peer);
if (peer == NULL) {
nh = fib4_lookup(M_GETFIB(*m0), *ip_dst, 0,
NHR_NONE, 0);
if (nh && (nh->nh_flags & NHF_GATEWAY))
if (nh && (nh->nh_flags & NHF_GATEWAY)) {
peer = ovpn_find_peer_by_ip(sc,
nh->gw4_sa.sin_addr);
SDT_PROBE2(if_ovpn, tx, route, ip4,
&nh->gw4_sa.sin_addr, peer);
}
}
break;
}
@ -1666,12 +1676,16 @@ ovpn_route_peer(struct ovpn_softc *sc, struct mbuf **m0,
}
peer = ovpn_find_peer_by_ip6(sc, ip6_dst);
SDT_PROBE2(if_ovpn, tx, route, ip6, ip6_dst, peer);
if (peer == NULL) {
nh = fib6_lookup(M_GETFIB(*m0), ip6_dst, 0,
NHR_NONE, 0);
if (nh && (nh->nh_flags & NHF_GATEWAY))
if (nh && (nh->nh_flags & NHF_GATEWAY)) {
peer = ovpn_find_peer_by_ip6(sc,
&nh->gw6_sa.sin6_addr);
SDT_PROBE2(if_ovpn, tx, route, ip6,
&nh->gw6_sa.sin6_addr, peer);
}
}
break;
}
@ -1958,6 +1972,8 @@ ovpn_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst,
OVPN_RLOCK(sc);
SDT_PROBE1(if_ovpn, tx, transmit, start, m);
if (__predict_false(ifp->if_link_state != LINK_STATE_UP)) {
OVPN_COUNTER_ADD(sc, lost_data_pkts_out, 1);
OVPN_RUNLOCK(sc);