/*
- * Copyright (c) 2007-2010 Apple Inc. All rights reserved.
+ * Copyright (c) 2007-2018 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
/* $OpenBSD: if_pflog.c,v 1.22 2006/12/15 09:31:20 otto Exp $ */
/*
* The authors of this code are John Ioannidis (ji@tla.org),
- * Angelos D. Keromytis (kermit@csd.uch.gr) and
+ * Angelos D. Keromytis (kermit@csd.uch.gr) and
* Niels Provos (provos@physnet.uni-hamburg.de).
*
- * This code was written by John Ioannidis for BSD/OS in Athens, Greece,
+ * This code was written by John Ioannidis for BSD/OS in Athens, Greece,
* in November 1995.
*
* Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
* Permission to use, copy, and modify this software with or without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
- * modification of this software.
+ * modification of this software.
* You may use this code under the GNU public license if you so wish. Please
* contribute changes back to the authors under this freer than GPL license
* so that we may further the use of strong encryption without limitations to
#include <sys/ioctl.h>
#include <sys/mcache.h>
+#include <kern/zalloc.h>
+
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_types.h>
#include <net/pfvar.h>
#include <net/if_pflog.h>
-#define PFLOGNAME "pflog"
-#define PFLOGMTU (32768 + MHLEN + MLEN)
+#define PFLOGNAME "pflog"
+#define PFLOGMTU (32768 + MHLEN + MLEN)
#ifdef PFLOGDEBUG
#define DPRINTF(x) do { if (pflogdebug) printf x ; } while (0)
#define DPRINTF(x)
#endif
+static int pflog_remove(struct ifnet *);
static int pflog_clone_create(struct if_clone *, u_int32_t, void *);
static int pflog_clone_destroy(struct ifnet *);
static errno_t pflogoutput(struct ifnet *, struct mbuf *);
static errno_t pflogdelproto(struct ifnet *, protocol_family_t);
static void pflogfree(struct ifnet *);
-static LIST_HEAD(, pflog_softc) pflogif_list;
+static LIST_HEAD(, pflog_softc) pflogif_list;
static struct if_clone pflog_cloner =
IF_CLONE_INITIALIZER(PFLOGNAME, pflog_clone_create, pflog_clone_destroy,
- 0, (PFLOGIFS_MAX - 1));
+ 0, (PFLOGIFS_MAX - 1), PFLOGIF_ZONE_MAX_ELEM, sizeof(struct pflog_softc));
-struct ifnet *pflogifs[PFLOGIFS_MAX]; /* for fast access */
+struct ifnet *pflogifs[PFLOGIFS_MAX]; /* for fast access */
void
pfloginit(void)
{
int i;
- if (pf_perim_lock == NULL || pf_lock == NULL) {
- panic("%s: called before PF is initialized", __func__);
- /* NOTREACHED */
- }
LIST_INIT(&pflogif_list);
- for (i = 0; i < PFLOGIFS_MAX; i++)
+ for (i = 0; i < PFLOGIFS_MAX; i++) {
pflogifs[i] = NULL;
+ }
(void) if_clone_attach(&pflog_cloner);
}
pflog_clone_create(struct if_clone *ifc, u_int32_t unit, __unused void *params)
{
struct pflog_softc *pflogif;
- struct ifnet_init_params pf_init;
+ struct ifnet_init_eparams pf_init;
int error = 0;
if (unit >= PFLOGIFS_MAX) {
/* NOTREACHED */
}
- if ((pflogif = _MALLOC(sizeof (*pflogif),
- M_DEVBUF, M_WAITOK|M_ZERO)) == NULL) {
+ if ((pflogif = if_clone_softc_allocate(&pflog_cloner)) == NULL) {
error = ENOMEM;
goto done;
}
- bzero(&pf_init, sizeof (pf_init));
+ bzero(&pf_init, sizeof(pf_init));
+ pf_init.ver = IFNET_INIT_CURRENT_VERSION;
+ pf_init.len = sizeof(pf_init);
+ pf_init.flags = IFNET_INIT_LEGACY;
pf_init.name = ifc->ifc_name;
pf_init.unit = unit;
pf_init.type = IFT_PFLOG;
pf_init.ioctl = pflogioctl;
pf_init.detach = pflogfree;
- bzero(pflogif, sizeof (*pflogif));
+ bzero(pflogif, sizeof(*pflogif));
pflogif->sc_unit = unit;
+ pflogif->sc_flags |= IFPFLF_DETACHING;
- error = ifnet_allocate(&pf_init, &pflogif->sc_if);
+ error = ifnet_allocate_extended(&pf_init, &pflogif->sc_if);
if (error != 0) {
printf("%s: ifnet_allocate failed - %d\n", __func__, error);
- _FREE(pflogif, M_DEVBUF);
+ if_clone_softc_deallocate(&pflog_cloner, pflogif);
goto done;
}
if (error != 0) {
printf("%s: ifnet_attach failed - %d\n", __func__, error);
ifnet_release(pflogif->sc_if);
- _FREE(pflogif, M_DEVBUF);
+ if_clone_softc_deallocate(&pflog_cloner, pflogif);
goto done;
}
lck_mtx_lock(pf_lock);
LIST_INSERT_HEAD(&pflogif_list, pflogif, sc_list);
pflogifs[unit] = pflogif->sc_if;
+ pflogif->sc_flags &= ~IFPFLF_DETACHING;
lck_mtx_unlock(pf_lock);
lck_rw_done(pf_perim_lock);
done:
- return (error);
+ return error;
}
static int
-pflog_clone_destroy(struct ifnet *ifp)
+pflog_remove(struct ifnet *ifp)
{
- struct pflog_softc *pflogif = ifp->if_softc;
+ int error = 0;
+ struct pflog_softc *pflogif = NULL;
lck_rw_lock_shared(pf_perim_lock);
lck_mtx_lock(pf_lock);
- pflogifs[pflogif->sc_unit] = NULL;
+ pflogif = ifp->if_softc;
+
+ if (pflogif == NULL ||
+ (pflogif->sc_flags & IFPFLF_DETACHING) != 0) {
+ error = EINVAL;
+ goto done;
+ }
+
+ pflogif->sc_flags |= IFPFLF_DETACHING;
LIST_REMOVE(pflogif, sc_list);
+done:
lck_mtx_unlock(pf_lock);
lck_rw_done(pf_perim_lock);
+ return error;
+}
- /* bpfdetach() is taken care of as part of interface detach */
- (void) ifnet_detach(ifp);
+static int
+pflog_clone_destroy(struct ifnet *ifp)
+{
+ int error = 0;
- return 0;
+ if ((error = pflog_remove(ifp)) != 0) {
+ goto done;
+ }
+ /* bpfdetach() is taken care of as part of interface detach */
+ (void)ifnet_detach(ifp);
+done:
+ return error;
}
static errno_t
pflogoutput(struct ifnet *ifp, struct mbuf *m)
{
- printf("%s: freeing data for %s%d\n", __func__, ifp->if_name,
- ifp->if_unit);
+ printf("%s: freeing data for %s\n", __func__, if_name(ifp));
m_freem(m);
- return (ENOTSUP);
+ return ENOTSUP;
}
static errno_t
case SIOCAIFADDR:
case SIOCSIFDSTADDR:
case SIOCSIFFLAGS:
- if (ifnet_flags(ifp) & IFF_UP)
+ if (ifnet_flags(ifp) & IFF_UP) {
ifnet_set_flags(ifp, IFF_RUNNING, IFF_RUNNING);
- else
+ } else {
ifnet_set_flags(ifp, 0, IFF_RUNNING);
+ }
break;
default:
- return (ENOTTY);
+ return ENOTTY;
}
- return (0);
+ return 0;
}
static errno_t
pflogdemux(struct ifnet *ifp, struct mbuf *m, char *h, protocol_family_t *ppf)
{
#pragma unused(h, ppf)
- printf("%s: freeing data for %s%d\n", __func__, ifp->if_name,
- ifp->if_unit);
+ printf("%s: freeing data for %s\n", __func__, if_name(ifp));
m_freem(m);
- return (EJUSTRETURN);
+ return EJUSTRETURN;
}
static errno_t
const struct ifnet_demux_desc *d, u_int32_t cnt)
{
#pragma unused(ifp, pf, d, cnt)
- return (0);
+ return 0;
}
static errno_t
pflogdelproto(struct ifnet *ifp, protocol_family_t pf)
{
#pragma unused(ifp, pf)
- return (0);
+ return 0;
}
static void
pflogfree(struct ifnet *ifp)
{
- _FREE(ifp->if_softc, M_DEVBUF);
+ if_clone_softc_deallocate(&pflog_cloner, ifp->if_softc);
ifp->if_softc = NULL;
(void) ifnet_release(ifp);
}
int
-pflog_packet(struct pfi_kif *kif, struct mbuf *m, sa_family_t af, u_int8_t dir,
+pflog_packet(struct pfi_kif *kif, pbuf_t *pbuf, sa_family_t af, u_int8_t dir,
u_int8_t reason, struct pf_rule *rm, struct pf_rule *am,
struct pf_ruleset *ruleset, struct pf_pdesc *pd)
{
#if NBPFILTER > 0
struct ifnet *ifn;
struct pfloghdr hdr;
+ struct mbuf *m;
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(pf_lock, LCK_MTX_ASSERT_OWNED);
- if (kif == NULL || m == NULL || rm == NULL || pd == NULL)
- return (-1);
+ if (kif == NULL || !pbuf_is_valid(pbuf) || rm == NULL || pd == NULL) {
+ return -1;
+ }
if (rm->logif >= PFLOGIFS_MAX ||
(ifn = pflogifs[rm->logif]) == NULL || !ifn->if_bpf) {
- return (0);
+ return 0;
}
- bzero(&hdr, sizeof (hdr));
+ if ((m = pbuf_to_mbuf(pbuf, FALSE)) == NULL) {
+ return 0;
+ }
+
+ bzero(&hdr, sizeof(hdr));
hdr.length = PFLOG_REAL_HDRLEN;
hdr.af = af;
hdr.action = rm->action;
hdr.reason = reason;
- memcpy(hdr.ifname, kif->pfik_name, sizeof (hdr.ifname));
+ memcpy(hdr.ifname, kif->pfik_name, sizeof(hdr.ifname));
if (am == NULL) {
hdr.rulenr = htonl(rm->nr);
} else {
hdr.rulenr = htonl(am->nr);
hdr.subrulenr = htonl(rm->nr);
- if (ruleset != NULL && ruleset->anchor != NULL)
+ if (ruleset != NULL && ruleset->anchor != NULL) {
strlcpy(hdr.ruleset, ruleset->anchor->name,
- sizeof (hdr.ruleset));
+ sizeof(hdr.ruleset));
+ }
}
- if (rm->log & PF_LOG_SOCKET_LOOKUP && !pd->lookup.done)
+ if (rm->log & PF_LOG_SOCKET_LOOKUP && !pd->lookup.done) {
pd->lookup.done = pf_socket_lookup(dir, pd);
+ }
if (pd->lookup.done > 0) {
hdr.uid = pd->lookup.uid;
hdr.pid = pd->lookup.pid;
break;
}
#endif /* NBPFILTER > 0 */
- return (0);
+ return 0;
}
projects / apple / xnu.git / blobdiff