/*
- * Copyright (c) 2000-2013 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*-
SLIST_HEAD(igmp_inm_relhead, in_multi);
-static void igi_initvar(struct igmp_ifinfo *, struct ifnet *, int);
-static struct igmp_ifinfo *igi_alloc(int);
-static void igi_free(struct igmp_ifinfo *);
-static void igi_delete(const struct ifnet *, struct igmp_inm_relhead *);
-static void igmp_dispatch_queue(struct igmp_ifinfo *, struct ifqueue *,
+static void igi_initvar(struct igmp_ifinfo *, struct ifnet *, int);
+static struct igmp_ifinfo *igi_alloc(zalloc_flags_t);
+static void igi_free(struct igmp_ifinfo *);
+static void igi_delete(const struct ifnet *, struct igmp_inm_relhead *);
+static void igmp_dispatch_queue(struct igmp_ifinfo *, struct ifqueue *,
int, const int);
-static void igmp_final_leave(struct in_multi *, struct igmp_ifinfo *,
- struct igmp_tparams *);
-static int igmp_handle_state_change(struct in_multi *,
- struct igmp_ifinfo *, struct igmp_tparams *);
-static int igmp_initial_join(struct in_multi *, struct igmp_ifinfo *,
- struct igmp_tparams *);
-static int igmp_input_v1_query(struct ifnet *, const struct ip *,
- const struct igmp *);
-static int igmp_input_v2_query(struct ifnet *, const struct ip *,
- const struct igmp *);
-static int igmp_input_v3_query(struct ifnet *, const struct ip *,
- /*const*/ struct igmpv3 *);
-static int igmp_input_v3_group_query(struct in_multi *,
- int, /*const*/ struct igmpv3 *);
-static int igmp_input_v1_report(struct ifnet *, struct mbuf *,
- /*const*/ struct ip *, /*const*/ struct igmp *);
-static int igmp_input_v2_report(struct ifnet *, struct mbuf *,
- /*const*/ struct ip *, /*const*/ struct igmp *);
-static void igmp_sendpkt(struct mbuf *);
-static __inline__ int igmp_isgroupreported(const struct in_addr);
+static void igmp_final_leave(struct in_multi *, struct igmp_ifinfo *,
+ struct igmp_tparams *);
+static int igmp_handle_state_change(struct in_multi *,
+ struct igmp_ifinfo *, struct igmp_tparams *);
+static int igmp_initial_join(struct in_multi *, struct igmp_ifinfo *,
+ struct igmp_tparams *);
+static int igmp_input_v1_query(struct ifnet *, const struct ip *,
+ const struct igmp *);
+static int igmp_input_v2_query(struct ifnet *, const struct ip *,
+ const struct igmp *);
+static int igmp_input_v3_query(struct ifnet *, const struct ip *,
+ /*const*/ struct igmpv3 *);
+static int igmp_input_v3_group_query(struct in_multi *,
+ int, /*const*/ struct igmpv3 *);
+static int igmp_input_v1_report(struct ifnet *, struct mbuf *,
+ /*const*/ struct ip *, /*const*/ struct igmp *);
+static int igmp_input_v2_report(struct ifnet *, struct mbuf *,
+ /*const*/ struct ip *, /*const*/ struct igmp *);
+static void igmp_sendpkt(struct mbuf *);
+static __inline__ int igmp_isgroupreported(const struct in_addr);
static struct mbuf *igmp_ra_alloc(void);
#ifdef IGMP_DEBUG
static const char *igmp_rec_type_to_str(const int);
#endif
-static uint32_t igmp_set_version(struct igmp_ifinfo *, const int);
-static void igmp_flush_relq(struct igmp_ifinfo *,
+static uint32_t igmp_set_version(struct igmp_ifinfo *, const int);
+static void igmp_flush_relq(struct igmp_ifinfo *,
struct igmp_inm_relhead *);
-static int igmp_v1v2_queue_report(struct in_multi *, const int);
-static void igmp_v1v2_process_group_timer(struct in_multi *, const int);
-static void igmp_v1v2_process_querier_timers(struct igmp_ifinfo *);
-static uint32_t igmp_v2_update_group(struct in_multi *, const int);
-static void igmp_v3_cancel_link_timers(struct igmp_ifinfo *);
-static uint32_t igmp_v3_dispatch_general_query(struct igmp_ifinfo *);
+static int igmp_v1v2_queue_report(struct in_multi *, const int);
+static void igmp_v1v2_process_group_timer(struct in_multi *, const int);
+static void igmp_v1v2_process_querier_timers(struct igmp_ifinfo *);
+static uint32_t igmp_v2_update_group(struct in_multi *, const int);
+static void igmp_v3_cancel_link_timers(struct igmp_ifinfo *);
+static uint32_t igmp_v3_dispatch_general_query(struct igmp_ifinfo *);
static struct mbuf *
- igmp_v3_encap_report(struct ifnet *, struct mbuf *);
-static int igmp_v3_enqueue_group_record(struct ifqueue *,
- struct in_multi *, const int, const int, const int);
-static int igmp_v3_enqueue_filter_change(struct ifqueue *,
- struct in_multi *);
-static void igmp_v3_process_group_timers(struct igmp_ifinfo *,
- struct ifqueue *, struct ifqueue *, struct in_multi *,
- const int);
-static int igmp_v3_merge_state_changes(struct in_multi *,
- struct ifqueue *);
-static void igmp_v3_suppress_group_record(struct in_multi *);
-static int sysctl_igmp_ifinfo SYSCTL_HANDLER_ARGS;
-static int sysctl_igmp_gsr SYSCTL_HANDLER_ARGS;
-static int sysctl_igmp_default_version SYSCTL_HANDLER_ARGS;
-
-static int igmp_timeout_run; /* IGMP timer is scheduled to run */
+igmp_v3_encap_report(struct ifnet *, struct mbuf *);
+static int igmp_v3_enqueue_group_record(struct ifqueue *,
+ struct in_multi *, const int, const int, const int);
+static int igmp_v3_enqueue_filter_change(struct ifqueue *,
+ struct in_multi *);
+static void igmp_v3_process_group_timers(struct igmp_ifinfo *,
+ struct ifqueue *, struct ifqueue *, struct in_multi *,
+ const unsigned int);
+static int igmp_v3_merge_state_changes(struct in_multi *,
+ struct ifqueue *);
+static void igmp_v3_suppress_group_record(struct in_multi *);
+static int sysctl_igmp_ifinfo SYSCTL_HANDLER_ARGS;
+static int sysctl_igmp_gsr SYSCTL_HANDLER_ARGS;
+static int sysctl_igmp_default_version SYSCTL_HANDLER_ARGS;
+
+static int igmp_timeout_run; /* IGMP timer is scheduled to run */
static void igmp_timeout(void *);
static void igmp_sched_timeout(void);
-static struct mbuf *m_raopt; /* Router Alert option */
+static struct mbuf *m_raopt; /* Router Alert option */
-static int querier_present_timers_running; /* IGMPv1/v2 older version
- * querier present */
-static int interface_timers_running; /* IGMPv3 general
- * query response */
-static int state_change_timers_running; /* IGMPv3 state-change
- * retransmit */
-static int current_state_timers_running; /* IGMPv1/v2 host
- * report; IGMPv3 g/sg
- * query response */
+static int querier_present_timers_running; /* IGMPv1/v2 older version
+ * querier present */
+static int interface_timers_running; /* IGMPv3 general
+ * query response */
+static int state_change_timers_running; /* IGMPv3 state-change
+ * retransmit */
+static int current_state_timers_running; /* IGMPv1/v2 host
+ * report; IGMPv3 g/sg
+ * query response */
/*
* Subsystem lock macros.
*/
-#define IGMP_LOCK() \
+#define IGMP_LOCK() \
lck_mtx_lock(&igmp_mtx)
-#define IGMP_LOCK_ASSERT_HELD() \
- lck_mtx_assert(&igmp_mtx, LCK_MTX_ASSERT_OWNED)
-#define IGMP_LOCK_ASSERT_NOTHELD() \
- lck_mtx_assert(&igmp_mtx, LCK_MTX_ASSERT_NOTOWNED)
-#define IGMP_UNLOCK() \
+#define IGMP_LOCK_ASSERT_HELD() \
+ LCK_MTX_ASSERT(&igmp_mtx, LCK_MTX_ASSERT_OWNED)
+#define IGMP_LOCK_ASSERT_NOTHELD() \
+ LCK_MTX_ASSERT(&igmp_mtx, LCK_MTX_ASSERT_NOTOWNED)
+#define IGMP_UNLOCK() \
lck_mtx_unlock(&igmp_mtx)
static LIST_HEAD(, igmp_ifinfo) igi_head;
.igps_len = sizeof(struct igmpstat_v3),
};
static struct igmpstat igmpstat; /* old IGMPv2 stats structure */
-static struct timeval igmp_gsrdelay = {10, 0};
+static struct timeval igmp_gsrdelay = {.tv_sec = 10, .tv_usec = 0};
static int igmp_recvifkludge = 1;
static int igmp_sendra = 1;
&igmp_legacysupp, 0,
"Allow v1/v2 reports to suppress v3 group responses");
SYSCTL_PROC(_net_inet_igmp, OID_AUTO, default_version,
- CTLTYPE_INT | CTLFLAG_RW,
- &igmp_default_version, 0, sysctl_igmp_default_version, "I",
+ CTLTYPE_INT | CTLFLAG_RW,
+ &igmp_default_version, 0, sysctl_igmp_default_version, "I",
"Default version of IGMP to run on each interface");
SYSCTL_PROC(_net_inet_igmp, OID_AUTO, gsrdelay,
CTLTYPE_INT | CTLFLAG_RW,
#ifdef IGMP_DEBUG
int igmp_debug = 0;
SYSCTL_INT(_net_inet_igmp, OID_AUTO,
- debug, CTLFLAG_RW | CTLFLAG_LOCKED, &igmp_debug, 0, "");
+ debug, CTLFLAG_RW | CTLFLAG_LOCKED, &igmp_debug, 0, "");
#endif
SYSCTL_NODE(_net_inet_igmp, OID_AUTO, ifinfo, CTLFLAG_RD | CTLFLAG_LOCKED,
sysctl_igmp_ifinfo, "Per-interface IGMPv3 state");
/* Lock group and attribute for igmp_mtx */
-static lck_attr_t *igmp_mtx_attr;
-static lck_grp_t *igmp_mtx_grp;
-static lck_grp_attr_t *igmp_mtx_grp_attr;
+static lck_attr_t *igmp_mtx_attr;
+static lck_grp_t *igmp_mtx_grp;
+static lck_grp_attr_t *igmp_mtx_grp_attr;
/*
* Locking and reference counting:
static decl_lck_mtx_data(, igmp_mtx);
static int igmp_timers_are_running;
-#define IGMP_ADD_DETACHED_INM(_head, _inm) { \
- SLIST_INSERT_HEAD(_head, _inm, inm_dtle); \
+#define IGMP_ADD_DETACHED_INM(_head, _inm) { \
+ SLIST_INSERT_HEAD(_head, _inm, inm_dtle); \
}
-#define IGMP_REMOVE_DETACHED_INM(_head) { \
- struct in_multi *_inm, *_inm_tmp; \
- SLIST_FOREACH_SAFE(_inm, _head, inm_dtle, _inm_tmp) { \
- SLIST_REMOVE(_head, _inm, in_multi, inm_dtle); \
- INM_REMREF(_inm); \
- } \
- VERIFY(SLIST_EMPTY(_head)); \
+#define IGMP_REMOVE_DETACHED_INM(_head) { \
+ struct in_multi *_inm, *_inm_tmp; \
+ SLIST_FOREACH_SAFE(_inm, _head, inm_dtle, _inm_tmp) { \
+ SLIST_REMOVE(_head, _inm, in_multi, inm_dtle); \
+ INM_REMREF(_inm); \
+ } \
+ VERIFY(SLIST_EMPTY(_head)); \
}
-#define IGI_ZONE_MAX 64 /* maximum elements in zone */
-#define IGI_ZONE_NAME "igmp_ifinfo" /* zone name */
-
-static unsigned int igi_size; /* size of zone element */
-static struct zone *igi_zone; /* zone for igmp_ifinfo */
+static ZONE_DECLARE(igi_zone, "igmp_ifinfo",
+ sizeof(struct igmp_ifinfo), ZC_ZFREE_CLEARMEM);
/* Store IGMPv3 record count in the module private scratch space */
-#define vt_nrecs pkt_mpriv.__mpriv_u.__mpriv32[0].__mpriv32_u.__val16[0]
+#define vt_nrecs pkt_mpriv.__mpriv_u.__mpriv32[0].__mpriv32_u.__val16[0]
static __inline void
igmp_save_context(struct mbuf *m, struct ifnet *ifp)
{
- m->m_pkthdr.rcvif = ifp;
+ m->m_pkthdr.rcvif = ifp;
}
static __inline void
igmp_scrub_context(struct mbuf *m)
{
- m->m_pkthdr.rcvif = NULL;
+ m->m_pkthdr.rcvif = NULL;
}
#ifdef IGMP_DEBUG
struct in_addr ia;
ia.s_addr = htonl(haddr);
- return (inet_ntop(AF_INET, &ia, buf, size));
+ return inet_ntop(AF_INET, &ia, buf, size);
}
#endif
static __inline struct ifnet *
igmp_restore_context(struct mbuf *m)
{
- return (m->m_pkthdr.rcvif);
+ return m->m_pkthdr.rcvif;
}
/*
sysctl_igmp_default_version SYSCTL_HANDLER_ARGS
{
#pragma unused(oidp, arg2)
- int error;
- int new;
+ int error;
+ int new;
IGMP_LOCK();
error = SYSCTL_OUT(req, arg1, sizeof(int));
- if (error || !req->newptr)
+ if (error || !req->newptr) {
goto out_locked;
+ }
new = igmp_default_version;
error = SYSCTL_IN(req, &new, sizeof(int));
- if (error)
+ if (error) {
goto out_locked;
+ }
if (new < IGMP_VERSION_1 || new > IGMP_VERSION_3) {
error = EINVAL;
out_locked:
IGMP_UNLOCK();
- return (error);
+ return error;
}
/*
IGMP_LOCK();
- i = igmp_gsrdelay.tv_sec;
+ i = (int)igmp_gsrdelay.tv_sec;
error = sysctl_handle_int(oidp, &i, 0, req);
- if (error || !req->newptr)
+ if (error || !req->newptr) {
goto out_locked;
+ }
if (i < -1 || i >= 60) {
error = EINVAL;
out_locked:
IGMP_UNLOCK();
- return (error);
+ return error;
}
/*
sysctl_igmp_ifinfo SYSCTL_HANDLER_ARGS
{
#pragma unused(oidp)
- int *name;
- int error;
- u_int namelen;
- struct ifnet *ifp;
- struct igmp_ifinfo *igi;
- struct igmp_ifinfo_u igi_u;
+ int *name;
+ int error;
+ u_int namelen;
+ struct ifnet *ifp;
+ struct igmp_ifinfo *igi;
+ struct igmp_ifinfo_u igi_u;
name = (int *)arg1;
namelen = arg2;
- if (req->newptr != USER_ADDR_NULL)
- return (EPERM);
+ if (req->newptr != USER_ADDR_NULL) {
+ return EPERM;
+ }
- if (namelen != 1)
- return (EINVAL);
+ if (namelen != 1) {
+ return EINVAL;
+ }
IGMP_LOCK();
ifnet_head_lock_shared();
ifp = ifindex2ifnet[name[0]];
ifnet_head_done();
- if (ifp == NULL)
+ if (ifp == NULL) {
goto out_locked;
+ }
- bzero(&igi_u, sizeof (igi_u));
+ bzero(&igi_u, sizeof(igi_u));
LIST_FOREACH(igi, &igi_head, igi_link) {
IGI_LOCK(igi);
igi_u.igi_uri = igi->igi_uri;
IGI_UNLOCK(igi);
- error = SYSCTL_OUT(req, &igi_u, sizeof (igi_u));
+ error = SYSCTL_OUT(req, &igi_u, sizeof(igi_u));
break;
}
out_locked:
IGMP_UNLOCK();
- return (error);
+ return error;
}
/*
struct mbuf *m;
struct ip *ip;
- if (igi != NULL)
+ if (igi != NULL) {
IGI_LOCK_ASSERT_HELD(igi);
+ }
for (;;) {
IF_DEQUEUE(ifq, m);
- if (m == NULL)
+ if (m == NULL) {
break;
+ }
IGMP_PRINTF(("%s: dispatch 0x%llx from 0x%llx\n", __func__,
(uint64_t)VM_KERNEL_ADDRPERM(ifq),
(uint64_t)VM_KERNEL_ADDRPERM(m)));
ip = mtod(m, struct ip *);
- if (loop)
+ if (loop) {
m->m_flags |= M_IGMP_LOOP;
- if (igi != NULL)
+ }
+ if (igi != NULL) {
IGI_UNLOCK(igi);
+ }
igmp_sendpkt(m);
- if (igi != NULL)
+ if (igi != NULL) {
IGI_LOCK(igi);
- if (--limit == 0)
+ }
+ if (--limit == 0) {
break;
+ }
}
- if (igi != NULL)
+ if (igi != NULL) {
IGI_LOCK_ASSERT_HELD(igi);
+ }
}
/*
*/
static __inline__
-int igmp_isgroupreported(const struct in_addr addr)
+int
+igmp_isgroupreported(const struct in_addr addr)
{
-
if (in_allhosts(addr) ||
- ((!igmp_sendlocal && IN_LOCAL_GROUP(ntohl(addr.s_addr)))))
- return (0);
+ ((!igmp_sendlocal && IN_LOCAL_GROUP(ntohl(addr.s_addr))))) {
+ return 0;
+ }
- return (1);
+ return 1;
}
/*
static struct mbuf *
igmp_ra_alloc(void)
{
- struct mbuf *m;
- struct ipoption *p;
+ struct mbuf *m;
+ struct ipoption *p;
MGET(m, M_WAITOK, MT_DATA);
p = mtod(m, struct ipoption *);
p->ipopt_dst.s_addr = INADDR_ANY;
- p->ipopt_list[0] = IPOPT_RA; /* Router Alert Option */
- p->ipopt_list[1] = 0x04; /* 4 bytes long */
- p->ipopt_list[2] = IPOPT_EOL; /* End of IP option list */
- p->ipopt_list[3] = 0x00; /* pad byte */
+ p->ipopt_list[0] = (char)IPOPT_RA; /* Router Alert Option */
+ p->ipopt_list[1] = 0x04; /* 4 bytes long */
+ p->ipopt_list[2] = IPOPT_EOL; /* End of IP option list */
+ p->ipopt_list[3] = 0x00; /* pad byte */
m->m_len = sizeof(p->ipopt_dst) + p->ipopt_list[1];
- return (m);
+ return m;
}
/*
* Attach IGMP when PF_INET is attached to an interface.
*/
struct igmp_ifinfo *
-igmp_domifattach(struct ifnet *ifp, int how)
+igmp_domifattach(struct ifnet *ifp, zalloc_flags_t how)
{
struct igmp_ifinfo *igi;
__func__, (uint64_t)VM_KERNEL_ADDRPERM(ifp), ifp->if_name));
igi = igi_alloc(how);
- if (igi == NULL)
- return (NULL);
+ if (igi == NULL) {
+ return NULL;
+ }
IGMP_LOCK();
IGMP_UNLOCK();
IGMP_PRINTF(("%s: allocate igmp_ifinfo for ifp 0x%llx(%s)\n", __func__,
- (uint64_t)VM_KERNEL_ADDRPERM(ifp), ifp->if_name));
+ (uint64_t)VM_KERNEL_ADDRPERM(ifp), ifp->if_name));
- return (igi);
+ return igi;
}
/*
IGI_LOCK_ASSERT_NOTHELD(igi);
IGI_LOCK(igi);
- if (!(ifp->if_flags & IFF_MULTICAST))
+ if (!(ifp->if_flags & IFF_MULTICAST)) {
igi->igi_flags |= IGIF_SILENT;
- else
+ } else {
igi->igi_flags &= ~IGIF_SILENT;
+ }
IGI_UNLOCK(igi);
}
igi->igi_qri = IGMP_QRI_INIT;
igi->igi_uri = IGMP_URI_INIT;
- if (!reattach)
+ if (!reattach) {
SLIST_INIT(&igi->igi_relinmhead);
+ }
/*
* Responses to general queries are subject to bounds.
}
static struct igmp_ifinfo *
-igi_alloc(int how)
+igi_alloc(zalloc_flags_t how)
{
- struct igmp_ifinfo *igi;
-
- igi = (how == M_WAITOK) ? zalloc(igi_zone) : zalloc_noblock(igi_zone);
+ struct igmp_ifinfo *igi = zalloc_flags(igi_zone, how | Z_ZERO);
if (igi != NULL) {
- bzero(igi, igi_size);
lck_mtx_init(&igi->igi_lock, igmp_mtx_grp, igmp_mtx_attr);
igi->igi_debug |= IFD_ALLOC;
}
- return (igi);
+ return igi;
}
static void
void
igi_addref(struct igmp_ifinfo *igi, int locked)
{
- if (!locked)
+ if (!locked) {
IGI_LOCK_SPIN(igi);
- else
+ } else {
IGI_LOCK_ASSERT_HELD(igi);
+ }
if (++igi->igi_refcnt == 0) {
panic("%s: igi=%p wraparound refcnt", __func__, igi);
/* NOTREACHED */
}
- if (!locked)
+ if (!locked) {
IGI_UNLOCK(igi);
+ }
}
void
igmp_input_v1_query(struct ifnet *ifp, const struct ip *ip,
const struct igmp *igmp)
{
- struct igmp_ifinfo *igi;
- struct in_multi *inm;
- struct in_multistep step;
- struct igmp_tparams itp = { 0, 0, 0, 0 };
+ struct igmp_ifinfo *igi;
+ struct in_multi *inm;
+ struct in_multistep step;
+ struct igmp_tparams itp = { .qpt = 0, .it = 0, .cst = 0, .sct = 0 };
IGMP_LOCK_ASSERT_NOTHELD();
IN_FIRST_MULTI(step, inm);
while (inm != NULL) {
INM_LOCK(inm);
- if (inm->inm_ifp != ifp || inm->inm_timer != 0)
+ if (inm->inm_ifp != ifp || inm->inm_timer != 0) {
goto next;
+ }
switch (inm->inm_state) {
case IGMP_NOT_MEMBER:
done:
igmp_set_timeout(&itp);
- return (0);
+ return 0;
}
/*
igmp_input_v2_query(struct ifnet *ifp, const struct ip *ip,
const struct igmp *igmp)
{
- struct igmp_ifinfo *igi;
- struct in_multi *inm;
- int is_general_query;
- uint16_t timer;
- struct igmp_tparams itp = { 0, 0, 0, 0 };
+ struct igmp_ifinfo *igi;
+ struct in_multi *inm;
+ int is_general_query;
+ uint16_t timer;
+ struct igmp_tparams itp = { .qpt = 0, .it = 0, .cst = 0, .sct = 0 };
IGMP_LOCK_ASSERT_NOTHELD();
* IGMPv2 General Query.
* If this was not sent to the all-hosts group, ignore it.
*/
- if (!in_allhosts(ip->ip_dst))
+ if (!in_allhosts(ip->ip_dst)) {
goto done;
+ }
IGMPSTAT_INC(igps_rcv_gen_queries);
is_general_query = 1;
} else {
IGI_UNLOCK(igi);
timer = igmp->igmp_code / IGMP_TIMER_SCALE;
- if (timer == 0)
+ if (timer == 0) {
timer = 1;
+ }
if (is_general_query) {
struct in_multistep step;
IN_FIRST_MULTI(step, inm);
while (inm != NULL) {
INM_LOCK(inm);
- if (inm->inm_ifp == ifp)
+ if (inm->inm_ifp == ifp) {
itp.cst += igmp_v2_update_group(inm, timer);
+ }
INM_UNLOCK(inm);
IN_NEXT_MULTI(step, inm);
}
done:
igmp_set_timeout(&itp);
- return (0);
+ return 0;
}
/*
* We may be updating the group for the first time since we switched
* to IGMPv3. If we are, then we must clear any recorded source lists,
* and transition to REPORTING state; the group timer is overloaded
- * for group and group-source query responses.
+ * for group and group-source query responses.
*
* Unlike IGMPv3, the delay per group should be jittered
* to avoid bursts of IGMPv2 reports.
static uint32_t
igmp_v2_update_group(struct in_multi *inm, const int timer)
{
-
IGMP_INET_PRINTF(inm->inm_addr, ("%s: %s/%s timer=%d\n",
__func__, _igmp_inet_buf, if_name(inm->inm_ifp),
timer));
"skipping.\n", __func__));
break;
}
- /* FALLTHROUGH */
+ OS_FALLTHROUGH;
case IGMP_SG_QUERY_PENDING_MEMBER:
case IGMP_G_QUERY_PENDING_MEMBER:
case IGMP_IDLE_MEMBER:
break;
}
- return (inm->inm_timer);
+ return inm->inm_timer;
}
/*
igmp_input_v3_query(struct ifnet *ifp, const struct ip *ip,
/*const*/ struct igmpv3 *igmpv3)
{
- struct igmp_ifinfo *igi;
- struct in_multi *inm;
- int is_general_query;
- uint32_t maxresp, nsrc, qqi;
- uint16_t timer;
- uint8_t qrv;
- struct igmp_tparams itp = { 0, 0, 0, 0 };
+ struct igmp_ifinfo *igi;
+ struct in_multi *inm;
+ int is_general_query;
+ uint32_t maxresp, nsrc, qqi;
+ uint32_t timer;
+ uint8_t qrv;
+ struct igmp_tparams itp = { .qpt = 0, .it = 0, .cst = 0, .sct = 0 };
IGMP_LOCK_ASSERT_NOTHELD();
IGMP_PRINTF(("%s: process v3 query on ifp 0x%llx(%s)\n", __func__,
(uint64_t)VM_KERNEL_ADDRPERM(ifp), if_name(ifp)));
- maxresp = igmpv3->igmp_code; /* in 1/10ths of a second */
+ maxresp = igmpv3->igmp_code; /* in 1/10ths of a second */
if (maxresp >= 128) {
maxresp = IGMP_MANT(igmpv3->igmp_code) <<
- (IGMP_EXP(igmpv3->igmp_code) + 3);
+ (IGMP_EXP(igmpv3->igmp_code) + 3);
}
/*
qqi = igmpv3->igmp_qqi;
if (qqi >= 128) {
qqi = IGMP_MANT(igmpv3->igmp_qqi) <<
- (IGMP_EXP(igmpv3->igmp_qqi) + 3);
+ (IGMP_EXP(igmpv3->igmp_qqi) + 3);
}
timer = maxresp / IGMP_TIMER_SCALE;
- if (timer == 0)
+ if (timer == 0) {
timer = 1;
+ }
nsrc = ntohs(igmpv3->igmp_numsrc);
is_general_query = 1;
} else {
/* Group or group-source specific query. */
- if (nsrc == 0)
+ if (nsrc == 0) {
IGMPSTAT_INC(igps_rcv_group_queries);
- else
+ } else {
IGMPSTAT_INC(igps_rcv_gsr_queries);
+ }
}
igi = IGMP_IFINFO(ifp);
in_multihead_lock_shared();
IN_LOOKUP_MULTI(&igmpv3->igmp_group, ifp, inm);
in_multihead_lock_done();
- if (inm == NULL)
+ if (inm == NULL) {
goto done;
+ }
INM_LOCK(inm);
if (nsrc > 0) {
}
igmp_set_timeout(&itp);
- return (0);
+ return 0;
}
/*
igmp_input_v3_group_query(struct in_multi *inm,
int timer, /*const*/ struct igmpv3 *igmpv3)
{
- int retval;
- uint16_t nsrc;
+ int retval;
+ uint16_t nsrc;
INM_LOCK_ASSERT_HELD(inm);
case IGMP_AWAKENING_MEMBER:
case IGMP_IDLE_MEMBER:
case IGMP_LEAVING_MEMBER:
- return (retval);
+ return retval;
case IGMP_REPORTING_MEMBER:
case IGMP_G_QUERY_PENDING_MEMBER:
case IGMP_SG_QUERY_PENDING_MEMBER:
}
inm->inm_state = IGMP_G_QUERY_PENDING_MEMBER;
inm->inm_timer = IGMP_RANDOM_DELAY(timer);
- return (retval);
+ return retval;
}
/*
if (inm->inm_state == IGMP_G_QUERY_PENDING_MEMBER) {
timer = min(inm->inm_timer, timer);
inm->inm_timer = IGMP_RANDOM_DELAY(timer);
- return (retval);
+ return retval;
}
/*
* m_getptr() to walk the chain.
*/
if (inm->inm_nsrc > 0) {
- const struct in_addr *ap;
- int i, nrecorded;
+ const struct in_addr *ap;
+ int i, nrecorded;
ap = (const struct in_addr *)(igmpv3 + 1);
nrecorded = 0;
for (i = 0; i < nsrc; i++, ap++) {
retval = inm_record_source(inm, ap->s_addr);
- if (retval < 0)
+ if (retval < 0) {
break;
+ }
nrecorded += retval;
}
if (nrecorded > 0) {
}
}
- return (retval);
+ return retval;
}
/*
OIGMPSTAT_INC(igps_rcv_reports);
if ((ifp->if_flags & IFF_LOOPBACK) ||
- (m->m_pkthdr.pkt_flags & PKTF_LOOP))
- return (0);
+ (m->m_pkthdr.pkt_flags & PKTF_LOOP)) {
+ return 0;
+ }
if (!IN_MULTICAST(ntohl(igmp->igmp_group.s_addr) ||
!in_hosteq(igmp->igmp_group, ip->ip_dst))) {
IGMPSTAT_INC(igps_rcv_badreports);
OIGMPSTAT_INC(igps_rcv_badreports);
- return (EINVAL);
+ return EINVAL;
}
/*
*/
IGI_LOCK(igi);
if (igi->igi_version == IGMP_VERSION_3) {
- if (igmp_legacysupp)
+ if (igmp_legacysupp) {
igmp_v3_suppress_group_record(inm);
+ }
IGI_UNLOCK(igi);
INM_UNLOCK(inm);
INM_REMREF(inm); /* from IN_LOOKUP_MULTI */
- return (0);
+ return 0;
}
INM_LOCK_ASSERT_HELD(inm);
("report suppressed for %s on ifp 0x%llx(%s)\n",
_igmp_inet_buf,
(uint64_t)VM_KERNEL_ADDRPERM(ifp), if_name(ifp)));
+ OS_FALLTHROUGH;
case IGMP_SLEEPING_MEMBER:
inm->inm_state = IGMP_SLEEPING_MEMBER;
break;
("report suppressed for %s on ifp 0x%llx(%s)\n",
_igmp_inet_buf,
(uint64_t)VM_KERNEL_ADDRPERM(ifp), if_name(ifp)));
- if (igi->igi_version == IGMP_VERSION_1)
+ if (igi->igi_version == IGMP_VERSION_1) {
inm->inm_state = IGMP_LAZY_MEMBER;
- else if (igi->igi_version == IGMP_VERSION_2)
+ } else if (igi->igi_version == IGMP_VERSION_2) {
inm->inm_state = IGMP_SLEEPING_MEMBER;
+ }
break;
case IGMP_G_QUERY_PENDING_MEMBER:
case IGMP_SG_QUERY_PENDING_MEMBER:
INM_REMREF(inm); /* from IN_LOOKUP_MULTI */
}
- return (0);
+ return 0;
}
/*
if (in_hosteq(ip->ip_src, IA_SIN(ia)->sin_addr)) {
IFA_UNLOCK(&ia->ia_ifa);
IFA_REMREF(&ia->ia_ifa);
- return (0);
+ return 0;
}
IFA_UNLOCK(&ia->ia_ifa);
}
if ((ifp->if_flags & IFF_LOOPBACK) ||
(m->m_pkthdr.pkt_flags & PKTF_LOOP)) {
- if (ia != NULL)
+ if (ia != NULL) {
IFA_REMREF(&ia->ia_ifa);
- return (0);
+ }
+ return 0;
}
if (!IN_MULTICAST(ntohl(igmp->igmp_group.s_addr)) ||
!in_hosteq(igmp->igmp_group, ip->ip_dst)) {
- if (ia != NULL)
+ if (ia != NULL) {
IFA_REMREF(&ia->ia_ifa);
+ }
IGMPSTAT_INC(igps_rcv_badreports);
OIGMPSTAT_INC(igps_rcv_badreports);
- return (EINVAL);
+ return EINVAL;
}
/*
IFA_UNLOCK(&ia->ia_ifa);
}
}
- if (ia != NULL)
+ if (ia != NULL) {
IFA_REMREF(&ia->ia_ifa);
+ }
IGMP_INET_PRINTF(igmp->igmp_group,
("process v2 report %s on ifp 0x%llx(%s)\n", _igmp_inet_buf,
*/
IGI_LOCK(igi);
if (igi->igi_version == IGMP_VERSION_3) {
- if (igmp_legacysupp)
+ if (igmp_legacysupp) {
igmp_v3_suppress_group_record(inm);
+ }
IGI_UNLOCK(igi);
INM_UNLOCK(inm);
INM_REMREF(inm);
- return (0);
+ return 0;
}
inm->inm_timer = 0;
("report suppressed for %s on ifp 0x%llx(%s)\n",
_igmp_inet_buf, (uint64_t)VM_KERNEL_ADDRPERM(ifp),
if_name(ifp)));
+ OS_FALLTHROUGH;
case IGMP_LAZY_MEMBER:
inm->inm_state = IGMP_LAZY_MEMBER;
break;
INM_REMREF(inm);
}
- return (0);
+ return 0;
}
void
* Always pullup to the minimum size for v1/v2 or v3
* to amortize calls to m_pulldown().
*/
- if (igmplen >= IGMP_V3_QUERY_MINLEN)
+ if (igmplen >= IGMP_V3_QUERY_MINLEN) {
minlen = IGMP_V3_QUERY_MINLEN;
- else
+ } else {
minlen = IGMP_MINLEN;
+ }
/* A bit more expensive than M_STRUCT_GET, but ensures alignment */
M_STRUCT_GET0(igmp, struct igmp *, m, off, minlen);
switch (igmp->igmp_type) {
case IGMP_HOST_MEMBERSHIP_QUERY:
if (igmplen == IGMP_MINLEN) {
- if (igmp->igmp_code == 0)
+ if (igmp->igmp_code == 0) {
queryver = IGMP_VERSION_1;
- else
+ } else {
queryver = IGMP_VERSION_2;
+ }
} else if (igmplen >= IGMP_V3_QUERY_MINLEN) {
queryver = IGMP_VERSION_3;
} else {
switch (queryver) {
case IGMP_VERSION_1:
IGMPSTAT_INC(igps_rcv_v1v2_queries);
- if (!igmp_v1enable)
+ if (!igmp_v1enable) {
break;
+ }
if (igmp_input_v1_query(ifp, ip, igmp) != 0) {
m_freem(m);
return;
case IGMP_VERSION_2:
IGMPSTAT_INC(igps_rcv_v1v2_queries);
- if (!igmp_v2enable)
+ if (!igmp_v2enable) {
break;
+ }
if (igmp_input_v2_query(ifp, ip, igmp) != 0) {
m_freem(m);
return;
break;
case IGMP_VERSION_3: {
- struct igmpv3 *igmpv3;
- uint16_t igmpv3len;
- uint16_t srclen;
- int nsrc;
+ struct igmpv3 *igmpv3;
+ uint16_t igmpv3len;
+ uint16_t srclen;
+ int nsrc;
- IGMPSTAT_INC(igps_rcv_v3_queries);
- igmpv3 = (struct igmpv3 *)igmp;
- /*
- * Validate length based on source count.
- */
- nsrc = ntohs(igmpv3->igmp_numsrc);
- srclen = sizeof(struct in_addr) * nsrc;
- if (igmplen < (IGMP_V3_QUERY_MINLEN + srclen)) {
- IGMPSTAT_INC(igps_rcv_tooshort);
- OIGMPSTAT_INC(igps_rcv_tooshort);
- m_freem(m);
- return;
- }
- igmpv3len = IGMP_V3_QUERY_MINLEN + srclen;
- /*
- * A bit more expensive than M_STRUCT_GET,
- * but ensures alignment.
- */
- M_STRUCT_GET0(igmpv3, struct igmpv3 *, m,
- off, igmpv3len);
- if (igmpv3 == NULL) {
- IGMPSTAT_INC(igps_rcv_tooshort);
- OIGMPSTAT_INC(igps_rcv_tooshort);
- return;
- }
- /*
- * N.B.: we assume the packet was correctly
- * aligned in ip_input.
- */
- if (igmp_input_v3_query(ifp, ip, igmpv3) != 0) {
- m_freem(m);
- return;
- }
+ IGMPSTAT_INC(igps_rcv_v3_queries);
+ igmpv3 = (struct igmpv3 *)igmp;
+ /*
+ * Validate length based on source count.
+ */
+ nsrc = ntohs(igmpv3->igmp_numsrc);
+ /*
+ * The max vaue of nsrc is limited by the
+ * MTU of the network on which the datagram
+ * is received
+ */
+ if (nsrc < 0 || nsrc > IGMP_V3_QUERY_MAX_SRCS) {
+ IGMPSTAT_INC(igps_rcv_tooshort);
+ OIGMPSTAT_INC(igps_rcv_tooshort);
+ m_freem(m);
+ return;
}
- break;
+ srclen = sizeof(struct in_addr) * (uint16_t)nsrc;
+ if (igmplen < (IGMP_V3_QUERY_MINLEN + srclen)) {
+ IGMPSTAT_INC(igps_rcv_tooshort);
+ OIGMPSTAT_INC(igps_rcv_tooshort);
+ m_freem(m);
+ return;
+ }
+ igmpv3len = IGMP_V3_QUERY_MINLEN + srclen;
+ /*
+ * A bit more expensive than M_STRUCT_GET,
+ * but ensures alignment.
+ */
+ M_STRUCT_GET0(igmpv3, struct igmpv3 *, m,
+ off, igmpv3len);
+ if (igmpv3 == NULL) {
+ IGMPSTAT_INC(igps_rcv_tooshort);
+ OIGMPSTAT_INC(igps_rcv_tooshort);
+ return;
+ }
+ /*
+ * N.B.: we assume the packet was correctly
+ * aligned in ip_input.
+ */
+ if (igmp_input_v3_query(ifp, ip, igmpv3) != 0) {
+ m_freem(m);
+ return;
+ }
+ }
+ break;
}
break;
case IGMP_v1_HOST_MEMBERSHIP_REPORT:
- if (!igmp_v1enable)
+ if (!igmp_v1enable) {
break;
+ }
if (igmp_input_v1_report(ifp, m, ip, igmp) != 0) {
m_freem(m);
return;
break;
case IGMP_v2_HOST_MEMBERSHIP_REPORT:
- if (!igmp_v2enable)
+ if (!igmp_v2enable) {
break;
- if (!ip_checkrouteralert(m))
+ }
+ if (!ip_checkrouteralert(m)) {
IGMPSTAT_INC(igps_rcv_nora);
+ }
if (igmp_input_v2_report(ifp, m, ip, igmp) != 0) {
m_freem(m);
return;
* Hosts do not need to process IGMPv3 membership reports,
* as report suppression is no longer required.
*/
- if (!ip_checkrouteralert(m))
+ if (!ip_checkrouteralert(m)) {
IGMPSTAT_INC(igps_rcv_nora);
+ }
break;
default:
if (itp->qpt != 0 || itp->it != 0 || itp->cst != 0 || itp->sct != 0) {
IGMP_LOCK();
- if (itp->qpt != 0)
+ if (itp->qpt != 0) {
querier_present_timers_running = 1;
- if (itp->it != 0)
+ }
+ if (itp->it != 0) {
interface_timers_running = 1;
- if (itp->cst != 0)
+ }
+ if (itp->cst != 0) {
current_state_timers_running = 1;
- if (itp->sct != 0)
+ }
+ if (itp->sct != 0) {
state_change_timers_running = 1;
+ }
igmp_sched_timeout();
IGMP_UNLOCK();
}
igmp_timeout(void *arg)
{
#pragma unused(arg)
- struct ifqueue scq; /* State-change packets */
- struct ifqueue qrq; /* Query response packets */
- struct ifnet *ifp;
- struct igmp_ifinfo *igi;
- struct in_multi *inm;
- int loop = 0, uri_sec = 0;
- SLIST_HEAD(, in_multi) inm_dthead;
+ struct ifqueue scq; /* State-change packets */
+ struct ifqueue qrq; /* Query response packets */
+ struct ifnet *ifp;
+ struct igmp_ifinfo *igi;
+ struct in_multi *inm;
+ unsigned int loop = 0, uri_sec = 0;
+ SLIST_HEAD(, in_multi) inm_dthead;
SLIST_INIT(&inm_dthead);
LIST_FOREACH(igi, &igi_head, igi_link) {
IGI_LOCK(igi);
igmp_v1v2_process_querier_timers(igi);
- if (igi->igi_v1_timer > 0 || igi->igi_v2_timer > 0)
+ if (igi->igi_v1_timer > 0 || igi->igi_v2_timer > 0) {
querier_present_timers_running = 1;
+ }
IGI_UNLOCK(igi);
}
}
if (igi->igi_v3_timer == 0) {
/* Do nothing. */
} else if (--igi->igi_v3_timer == 0) {
- if (igmp_v3_dispatch_general_query(igi) > 0)
+ if (igmp_v3_dispatch_general_query(igi) > 0) {
interface_timers_running = 1;
+ }
} else {
interface_timers_running = 1;
}
}
if (!current_state_timers_running &&
- !state_change_timers_running)
+ !state_change_timers_running) {
goto out_locked;
+ }
current_state_timers_running = 0;
state_change_timers_running = 0;
IN_FIRST_MULTI(step, inm);
while (inm != NULL) {
INM_LOCK(inm);
- if (inm->inm_ifp != ifp)
+ if (inm->inm_ifp != ifp) {
goto next;
+ }
IGI_LOCK(igi);
switch (igi->igi_version) {
- case IGMP_VERSION_1:
- case IGMP_VERSION_2:
- igmp_v1v2_process_group_timer(inm,
- igi->igi_version);
- break;
- case IGMP_VERSION_3:
- igmp_v3_process_group_timers(igi, &qrq,
- &scq, inm, uri_sec);
- break;
+ case IGMP_VERSION_1:
+ case IGMP_VERSION_2:
+ igmp_v1v2_process_group_timer(inm,
+ igi->igi_version);
+ break;
+ case IGMP_VERSION_3:
+ igmp_v3_process_group_timers(igi, &qrq,
+ &scq, inm, uri_sec);
+ break;
}
IGI_UNLOCK(igi);
next:
inm->inm_state = IGMP_IDLE_MEMBER;
(void) igmp_v1v2_queue_report(inm,
(igmp_version == IGMP_VERSION_2) ?
- IGMP_v2_HOST_MEMBERSHIP_REPORT :
- IGMP_v1_HOST_MEMBERSHIP_REPORT);
+ IGMP_v2_HOST_MEMBERSHIP_REPORT :
+ IGMP_v1_HOST_MEMBERSHIP_REPORT);
INM_LOCK_ASSERT_HELD(inm);
IGI_LOCK_ASSERT_HELD(inm->inm_igi);
}
static void
igmp_v3_process_group_timers(struct igmp_ifinfo *igi,
struct ifqueue *qrq, struct ifqueue *scq,
- struct in_multi *inm, const int uri_sec)
+ struct in_multi *inm, const unsigned int uri_sec)
{
int query_response_timer_expired;
int state_change_retransmit_timer_expired;
/* We are in timer callback, so be quick about it. */
if (!state_change_retransmit_timer_expired &&
- !query_response_timer_expired)
+ !query_response_timer_expired) {
return;
+ }
switch (inm->inm_state) {
case IGMP_NOT_MEMBER:
/* XXX Clear recorded sources for next time. */
inm_clear_recorded(inm);
}
- /* FALLTHROUGH */
+ OS_FALLTHROUGH;
case IGMP_REPORTING_MEMBER:
case IGMP_LEAVING_MEMBER:
if (state_change_retransmit_timer_expired) {
* reset the timer.
*/
if (--inm->inm_scrv > 0) {
- inm->inm_sctimer = uri_sec;
+ inm->inm_sctimer = (uint16_t)uri_sec;
state_change_timers_running = 1;
/* caller will schedule timer */
}
static void
igmp_v3_suppress_group_record(struct in_multi *inm)
{
-
INM_LOCK_ASSERT_HELD(inm);
IGI_LOCK_ASSERT_HELD(inm->inm_igi);
VERIFY(inm->inm_igi->igi_version == IGMP_VERSION_3);
if (inm->inm_state != IGMP_G_QUERY_PENDING_MEMBER ||
- inm->inm_state != IGMP_SG_QUERY_PENDING_MEMBER)
+ inm->inm_state != IGMP_SG_QUERY_PENDING_MEMBER) {
return;
+ }
- if (inm->inm_state == IGMP_SG_QUERY_PENDING_MEMBER)
+ if (inm->inm_state == IGMP_SG_QUERY_PENDING_MEMBER) {
inm_clear_recorded(inm);
+ }
inm->inm_timer = 0;
inm->inm_state = IGMP_REPORTING_MEMBER;
IGI_LOCK_ASSERT_HELD(igi);
- return (MAX(igi->igi_v1_timer, igi->igi_v2_timer));
+ return MAX(igi->igi_v1_timer, igi->igi_v2_timer);
}
/*
static void
igmp_v3_cancel_link_timers(struct igmp_ifinfo *igi)
{
- struct ifnet *ifp;
- struct in_multi *inm;
- struct in_multistep step;
+ struct ifnet *ifp;
+ struct in_multi *inm;
+ struct in_multistep step;
IGI_LOCK_ASSERT_HELD(igi);
IN_FIRST_MULTI(step, inm);
while (inm != NULL) {
INM_LOCK(inm);
- if (inm->inm_ifp != ifp)
+ if (inm->inm_ifp != ifp) {
goto next;
+ }
switch (inm->inm_state) {
case IGMP_NOT_MEMBER:
IGI_LOCK(igi);
SLIST_INSERT_HEAD(&igi->igi_relinmhead, inm, inm_nrele);
IGI_UNLOCK(igi);
- /* FALLTHROUGH */
+ OS_FALLTHROUGH;
case IGMP_G_QUERY_PENDING_MEMBER:
case IGMP_SG_QUERY_PENDING_MEMBER:
inm_clear_recorded(inm);
- /* FALLTHROUGH */
+ OS_FALLTHROUGH;
case IGMP_REPORTING_MEMBER:
inm->inm_state = IGMP_REPORTING_MEMBER;
break;
static int
igmp_v1v2_queue_report(struct in_multi *inm, const int type)
{
- struct ifnet *ifp;
- struct igmp *igmp;
- struct ip *ip;
- struct mbuf *m;
- int error = 0;
+ struct ifnet *ifp;
+ struct igmp *igmp;
+ struct ip *ip;
+ struct mbuf *m;
+ int error = 0;
INM_LOCK_ASSERT_HELD(inm);
IGI_LOCK_ASSERT_HELD(inm->inm_igi);
ifp = inm->inm_ifp;
MGETHDR(m, M_DONTWAIT, MT_DATA);
- if (m == NULL)
- return (ENOMEM);
+ if (m == NULL) {
+ return ENOMEM;
+ }
MH_ALIGN(m, sizeof(struct ip) + sizeof(struct igmp));
m->m_pkthdr.len = sizeof(struct ip) + sizeof(struct igmp);
m->m_len = sizeof(struct igmp);
igmp = mtod(m, struct igmp *);
- igmp->igmp_type = type;
+ igmp->igmp_type = (u_char)type;
igmp->igmp_code = 0;
igmp->igmp_group = inm->inm_addr;
igmp->igmp_cksum = 0;
ip->ip_p = IPPROTO_IGMP;
ip->ip_src.s_addr = INADDR_ANY;
- if (type == IGMP_HOST_LEAVE_MESSAGE)
+ if (type == IGMP_HOST_LEAVE_MESSAGE) {
ip->ip_dst.s_addr = htonl(INADDR_ALLRTRS_GROUP);
- else
+ } else {
ip->ip_dst = inm->inm_addr;
+ }
igmp_save_context(m, ifp);
m->m_flags |= M_IGMPV2;
- if (inm->inm_igi->igi_flags & IGIF_LOOPBACK)
+ if (inm->inm_igi->igi_flags & IGIF_LOOPBACK) {
m->m_flags |= M_IGMP_LOOP;
+ }
/*
* Due to the fact that at this point we are possibly holding
IF_ENQUEUE(&inm->inm_igi->igi_v2q, m);
VERIFY(error == 0);
}
- return (error);
+ return error;
}
/*
int error = 0;
VERIFY(itp != NULL);
- bzero(itp, sizeof (*itp));
+ bzero(itp, sizeof(*itp));
INM_LOCK_ASSERT_HELD(inm);
VERIFY(inm->inm_igi != NULL);
error = igmp_handle_state_change(inm, igi, itp);
out:
- return (error);
+ return error;
}
/*
igmp_initial_join(struct in_multi *inm, struct igmp_ifinfo *igi,
struct igmp_tparams *itp)
{
- struct ifnet *ifp;
- struct ifqueue *ifq;
- int error, retval, syncstates;
+ struct ifnet *ifp;
+ struct ifqueue *ifq;
+ int error, retval, syncstates;
INM_LOCK_ASSERT_HELD(inm);
IGI_LOCK_ASSERT_NOTHELD(igi);
inm->inm_state = IGMP_IDLE_MEMBER;
error = igmp_v1v2_queue_report(inm,
(igi->igi_version == IGMP_VERSION_2) ?
- IGMP_v2_HOST_MEMBERSHIP_REPORT :
- IGMP_v1_HOST_MEMBERSHIP_REPORT);
+ IGMP_v2_HOST_MEMBERSHIP_REPORT :
+ IGMP_v1_HOST_MEMBERSHIP_REPORT);
INM_LOCK_ASSERT_HELD(inm);
IGI_LOCK_ASSERT_HELD(igi);
inm->inm_scrv = 1;
} else {
VERIFY(igi->igi_rv > 1);
- inm->inm_scrv = igi->igi_rv;
+ inm->inm_scrv = (uint16_t)igi->igi_rv;
}
inm->inm_sctimer = 1;
itp->sct = 1;
_igmp_inet_buf, if_name(inm->inm_ifp)));
}
- return (error);
+ return error;
}
/*
igmp_handle_state_change(struct in_multi *inm, struct igmp_ifinfo *igi,
struct igmp_tparams *itp)
{
- struct ifnet *ifp;
- int retval = 0;
+ struct ifnet *ifp;
+ int retval = 0;
INM_LOCK_ASSERT_HELD(inm);
IGI_LOCK_ASSERT_NOTHELD(igi);
* If record(s) were enqueued, start the state-change
* report timer for this group.
*/
- inm->inm_scrv = ((igi->igi_flags & IGIF_LOOPBACK) ? 1 : igi->igi_rv);
+ inm->inm_scrv = ((igi->igi_flags & IGIF_LOOPBACK) ? 1 : (uint16_t)igi->igi_rv);
inm->inm_sctimer = 1;
itp->sct = 1;
IGI_UNLOCK(igi);
done:
- return (retval);
+ return retval;
}
/*
if (igi->igi_flags & IGIF_LOOPBACK) {
inm->inm_scrv = 1;
} else {
- inm->inm_scrv = igi->igi_rv;
+ inm->inm_scrv = (uint16_t)igi->igi_rv;
}
IGMP_INET_PRINTF(inm->inm_addr,
("%s: Leaving %s/%s with %d "
VERIFY(inm->inm_nrelecnt != 0);
retval = igmp_v3_enqueue_group_record(
- &inm->inm_scq, inm, 1, 0, 0);
+ &inm->inm_scq, inm, 1, 0, 0);
itp->cst = (inm->inm_scq.ifq_len > 0);
KASSERT(retval != 0,
("%s: enqueue record = %d\n", __func__,
- retval));
+ retval));
inm->inm_state = IGMP_LEAVING_MEMBER;
inm->inm_sctimer = 1;
const int is_state_change, const int is_group_query,
const int is_source_query)
{
- struct igmp_grouprec ig;
- struct igmp_grouprec *pig;
- struct ifnet *ifp;
- struct ip_msource *ims, *nims;
- struct mbuf *m0, *m, *md;
- int error, is_filter_list_change;
- int minrec0len, m0srcs, msrcs, nbytes, off;
- int record_has_sources;
- int now;
- int type;
- in_addr_t naddr;
- uint8_t mode;
- u_int16_t ig_numsrc;
+ struct igmp_grouprec ig;
+ struct igmp_grouprec *pig;
+ struct ifnet *ifp;
+ struct ip_msource *ims, *nims;
+ struct mbuf *m0, *m, *md;
+ int error, is_filter_list_change;
+ int minrec0len, m0srcs, nbytes, off;
+ uint16_t msrcs;
+ int record_has_sources;
+ int now;
+ int type;
+ in_addr_t naddr;
+ uint16_t mode;
+ u_int16_t ig_numsrc;
INM_LOCK_ASSERT_HELD(inm);
IGI_LOCK_ASSERT_HELD(inm->inm_igi);
* the generation of source records.
*/
if (inm->inm_st[0].iss_asm > 0 && inm->inm_st[1].iss_asm > 0 &&
- inm->inm_nsrc == 0)
+ inm->inm_nsrc == 0) {
record_has_sources = 0;
+ }
if (is_state_change) {
/*
IGMP_PRINTF(("%s: change to INCLUDE\n",
__func__));
type = IGMP_CHANGE_TO_INCLUDE_MODE;
- if (mode == MCAST_UNDEFINED)
+ if (mode == MCAST_UNDEFINED) {
record_has_sources = 0;
+ }
}
} else {
if (record_has_sources) {
/*
* Generate the filter list changes using a separate function.
*/
- if (is_filter_list_change)
- return (igmp_v3_enqueue_filter_change(ifq, inm));
+ if (is_filter_list_change) {
+ return igmp_v3_enqueue_filter_change(ifq, inm);
+ }
if (type == IGMP_DO_NOTHING) {
IGMP_INET_PRINTF(inm->inm_addr,
("%s: nothing to do for %s/%s\n",
__func__, _igmp_inet_buf,
if_name(inm->inm_ifp)));
- return (0);
+ return 0;
}
/*
* ideally more.
*/
minrec0len = sizeof(struct igmp_grouprec);
- if (record_has_sources)
+ if (record_has_sources) {
minrec0len += sizeof(in_addr_t);
+ }
IGMP_INET_PRINTF(inm->inm_addr,
("%s: queueing %s for %s/%s\n", __func__,
m0 != NULL &&
(m0->m_pkthdr.vt_nrecs + 1 <= IGMP_V3_REPORT_MAXRECS) &&
(m0->m_pkthdr.len + minrec0len) <
- (ifp->if_mtu - IGMP_LEADINGSPACE)) {
+ (ifp->if_mtu - IGMP_LEADINGSPACE)) {
m0srcs = (ifp->if_mtu - m0->m_pkthdr.len -
- sizeof(struct igmp_grouprec)) / sizeof(in_addr_t);
+ sizeof(struct igmp_grouprec)) / sizeof(in_addr_t);
m = m0;
IGMP_PRINTF(("%s: use existing packet\n", __func__));
} else {
if (IF_QFULL(ifq)) {
IGMP_PRINTF(("%s: outbound queue full\n", __func__));
- return (-ENOMEM);
+ return -ENOMEM;
}
m = NULL;
m0srcs = (ifp->if_mtu - IGMP_LEADINGSPACE -
sizeof(struct igmp_grouprec)) / sizeof(in_addr_t);
if (!is_state_change && !is_group_query) {
m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
- if (m)
+ if (m) {
m->m_data += IGMP_LEADINGSPACE;
+ }
}
if (m == NULL) {
m = m_gethdr(M_DONTWAIT, MT_DATA);
- if (m)
+ if (m) {
MH_ALIGN(m, IGMP_LEADINGSPACE);
+ }
+ }
+ if (m == NULL) {
+ return -ENOMEM;
}
- if (m == NULL)
- return (-ENOMEM);
igmp_save_context(m, ifp);
* Append group record.
* If we have sources, we don't know how many yet.
*/
- ig.ig_type = type;
+ ig.ig_type = (u_char)type;
ig.ig_datalen = 0;
ig.ig_numsrc = 0;
ig.ig_group = inm->inm_addr;
if (!m_append(m, sizeof(struct igmp_grouprec), (void *)&ig)) {
- if (m != m0)
+ if (m != m0) {
m_freem(m);
+ }
IGMP_PRINTF(("%s: m_append() failed.\n", __func__));
- return (-ENOMEM);
+ return -ENOMEM;
}
nbytes += sizeof(struct igmp_grouprec);
IGMP_PRINTF(("%s: append node\n", __func__));
naddr = htonl(ims->ims_haddr);
if (!m_append(m, sizeof(in_addr_t), (void *)&naddr)) {
- if (m != m0)
+ if (m != m0) {
m_freem(m);
+ }
IGMP_PRINTF(("%s: m_append() failed.\n",
__func__));
- return (-ENOMEM);
+ return -ENOMEM;
}
nbytes += sizeof(in_addr_t);
++msrcs;
- if (msrcs == m0srcs)
+ if (msrcs == m0srcs) {
break;
+ }
}
IGMP_PRINTF(("%s: msrcs is %d this packet\n", __func__,
msrcs));
ig_numsrc = htons(msrcs);
- bcopy(&ig_numsrc, &pig->ig_numsrc, sizeof (ig_numsrc));
+ bcopy(&ig_numsrc, &pig->ig_numsrc, sizeof(ig_numsrc));
nbytes += (msrcs * sizeof(in_addr_t));
}
if (is_source_query && msrcs == 0) {
IGMP_PRINTF(("%s: no recorded sources to report\n", __func__));
- if (m != m0)
+ if (m != m0) {
m_freem(m);
- return (0);
+ }
+ return 0;
}
/*
/*
* No further work needed if no source list in packet(s).
*/
- if (!record_has_sources)
- return (nbytes);
+ if (!record_has_sources) {
+ return nbytes;
+ }
/*
* Whilst sources remain to be announced, we need to allocate
while (nims != NULL) {
if (IF_QFULL(ifq)) {
IGMP_PRINTF(("%s: outbound queue full\n", __func__));
- return (-ENOMEM);
+ return -ENOMEM;
}
m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
- if (m)
+ if (m) {
m->m_data += IGMP_LEADINGSPACE;
+ }
if (m == NULL) {
m = m_gethdr(M_DONTWAIT, MT_DATA);
- if (m)
+ if (m) {
MH_ALIGN(m, IGMP_LEADINGSPACE);
+ }
+ }
+ if (m == NULL) {
+ return -ENOMEM;
}
- if (m == NULL)
- return (-ENOMEM);
igmp_save_context(m, ifp);
md = m_getptr(m, 0, &off);
pig = (struct igmp_grouprec *)(void *)
IGMP_PRINTF(("%s: allocated next packet\n", __func__));
if (!m_append(m, sizeof(struct igmp_grouprec), (void *)&ig)) {
- if (m != m0)
+ if (m != m0) {
m_freem(m);
+ }
IGMP_PRINTF(("%s: m_append() failed.\n", __func__));
- return (-ENOMEM);
+ return -ENOMEM;
}
m->m_pkthdr.vt_nrecs = 1;
nbytes += sizeof(struct igmp_grouprec);
IGMP_PRINTF(("%s: append node\n", __func__));
naddr = htonl(ims->ims_haddr);
if (!m_append(m, sizeof(in_addr_t), (void *)&naddr)) {
- if (m != m0)
+ if (m != m0) {
m_freem(m);
+ }
IGMP_PRINTF(("%s: m_append() failed.\n",
__func__));
- return (-ENOMEM);
+ return -ENOMEM;
}
++msrcs;
- if (msrcs == m0srcs)
+ if (msrcs == m0srcs) {
break;
+ }
}
ig_numsrc = htons(msrcs);
- bcopy(&ig_numsrc, &pig->ig_numsrc, sizeof (ig_numsrc));
+ bcopy(&ig_numsrc, &pig->ig_numsrc, sizeof(ig_numsrc));
nbytes += (msrcs * sizeof(in_addr_t));
IGMP_PRINTF(("%s: enqueueing next packet\n", __func__));
IF_ENQUEUE(ifq, m);
}
- return (nbytes);
+ return nbytes;
}
/*
* current filter modes on each ip_msource node.
*/
typedef enum {
- REC_NONE = 0x00, /* MCAST_UNDEFINED */
- REC_ALLOW = 0x01, /* MCAST_INCLUDE */
- REC_BLOCK = 0x02, /* MCAST_EXCLUDE */
+ REC_NONE = 0x00, /* MCAST_UNDEFINED */
+ REC_ALLOW = 0x01, /* MCAST_INCLUDE */
+ REC_BLOCK = 0x02, /* MCAST_EXCLUDE */
REC_FULL = REC_ALLOW | REC_BLOCK
} rectype_t;
{
static const int MINRECLEN =
sizeof(struct igmp_grouprec) + sizeof(in_addr_t);
- struct ifnet *ifp;
- struct igmp_grouprec ig;
- struct igmp_grouprec *pig;
- struct ip_msource *ims, *nims;
- struct mbuf *m, *m0, *md;
- in_addr_t naddr;
- int m0srcs, nbytes, npbytes, off, rsrcs, schanged;
- int nallow, nblock;
- uint8_t mode, now, then;
- rectype_t crt, drt, nrt;
- u_int16_t ig_numsrc;
+ struct ifnet *ifp;
+ struct igmp_grouprec ig;
+ struct igmp_grouprec *pig;
+ struct ip_msource *ims, *nims;
+ struct mbuf *m, *m0, *md;
+ in_addr_t naddr;
+ int m0srcs, nbytes, npbytes, off, schanged;
+ uint16_t rsrcs;
+ int nallow, nblock;
+ uint16_t mode;
+ uint8_t now, then;
+ rectype_t crt, drt, nrt;
+ u_int16_t ig_numsrc;
INM_LOCK_ASSERT_HELD(inm);
if (inm->inm_nsrc == 0 ||
- (inm->inm_st[0].iss_asm > 0 && inm->inm_st[1].iss_asm > 0))
- return (0);
-
- ifp = inm->inm_ifp; /* interface */
- mode = inm->inm_st[1].iss_fmode; /* filter mode at t1 */
- crt = REC_NONE; /* current group record type */
- drt = REC_NONE; /* mask of completed group record types */
- nrt = REC_NONE; /* record type for current node */
- m0srcs = 0; /* # source which will fit in current mbuf chain */
- nbytes = 0; /* # of bytes appended to group's state-change queue */
- npbytes = 0; /* # of bytes appended this packet */
- rsrcs = 0; /* # sources encoded in current record */
- schanged = 0; /* # nodes encoded in overall filter change */
- nallow = 0; /* # of source entries in ALLOW_NEW */
- nblock = 0; /* # of source entries in BLOCK_OLD */
- nims = NULL; /* next tree node pointer */
+ (inm->inm_st[0].iss_asm > 0 && inm->inm_st[1].iss_asm > 0)) {
+ return 0;
+ }
+
+ ifp = inm->inm_ifp; /* interface */
+ mode = inm->inm_st[1].iss_fmode; /* filter mode at t1 */
+ crt = REC_NONE; /* current group record type */
+ drt = REC_NONE; /* mask of completed group record types */
+ nrt = REC_NONE; /* record type for current node */
+ m0srcs = 0; /* # source which will fit in current mbuf chain */
+ nbytes = 0; /* # of bytes appended to group's state-change queue */
+ npbytes = 0; /* # of bytes appended this packet */
+ rsrcs = 0; /* # sources encoded in current record */
+ schanged = 0; /* # nodes encoded in overall filter change */
+ nallow = 0; /* # of source entries in ALLOW_NEW */
+ nblock = 0; /* # of source entries in BLOCK_OLD */
+ nims = NULL; /* next tree node pointer */
/*
* For each possible filter record mode.
m0 = ifq->ifq_tail;
if (m0 != NULL &&
(m0->m_pkthdr.vt_nrecs + 1 <=
- IGMP_V3_REPORT_MAXRECS) &&
+ IGMP_V3_REPORT_MAXRECS) &&
(m0->m_pkthdr.len + MINRECLEN) <
- (ifp->if_mtu - IGMP_LEADINGSPACE)) {
+ (ifp->if_mtu - IGMP_LEADINGSPACE)) {
m = m0;
m0srcs = (ifp->if_mtu - m0->m_pkthdr.len -
- sizeof(struct igmp_grouprec)) /
+ sizeof(struct igmp_grouprec)) /
sizeof(in_addr_t);
IGMP_PRINTF(("%s: use previous packet\n",
__func__));
} else {
m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
- if (m)
+ if (m) {
m->m_data += IGMP_LEADINGSPACE;
+ }
if (m == NULL) {
m = m_gethdr(M_DONTWAIT, MT_DATA);
- if (m)
+ if (m) {
MH_ALIGN(m, IGMP_LEADINGSPACE);
+ }
}
if (m == NULL) {
IGMP_PRINTF(("%s: m_get*() failed\n",
__func__));
- return (-ENOMEM);
+ return -ENOMEM;
}
m->m_pkthdr.vt_nrecs = 0;
igmp_save_context(m, ifp);
memset(&ig, 0, sizeof(ig));
ig.ig_group = inm->inm_addr;
if (!m_append(m, sizeof(ig), (void *)&ig)) {
- if (m != m0)
+ if (m != m0) {
m_freem(m);
+ }
IGMP_PRINTF(("%s: m_append() failed\n",
__func__));
- return (-ENOMEM);
+ return -ENOMEM;
}
npbytes += sizeof(struct igmp_grouprec);
if (m != m0) {
* however the converse is not true.
*/
rsrcs = 0;
- if (nims == NULL)
+ if (nims == NULL) {
nims = RB_MIN(ip_msource_tree, &inm->inm_srcs);
+ }
RB_FOREACH_FROM(ims, ip_msource_tree, nims) {
#ifdef IGMP_DEBUG
char buf[MAX_IPv4_STR_LEN];
continue;
}
nrt = (rectype_t)now;
- if (nrt == REC_NONE)
+ if (nrt == REC_NONE) {
nrt = (rectype_t)(~mode & REC_FULL);
+ }
if (schanged++ == 0) {
crt = nrt;
- } else if (crt != nrt)
+ } else if (crt != nrt) {
continue;
+ }
naddr = htonl(ims->ims_haddr);
if (!m_append(m, sizeof(in_addr_t),
(void *)&naddr)) {
- if (m != m0)
+ if (m != m0) {
m_freem(m);
+ }
IGMP_PRINTF(("%s: m_append() failed\n",
__func__));
- return (-ENOMEM);
+ return -ENOMEM;
}
nallow += !!(crt == REC_ALLOW);
nblock += !!(crt == REC_BLOCK);
- if (++rsrcs == m0srcs)
+ if (++rsrcs == m0srcs) {
break;
+ }
}
/*
* If we did not append any tree nodes on this
IGMP_PRINTF(("%s: m_adj(m, -ig)\n",
__func__));
m_adj(m, -((int)sizeof(
- struct igmp_grouprec)));
+ struct igmp_grouprec)));
}
continue;
}
npbytes += (rsrcs * sizeof(in_addr_t));
- if (crt == REC_ALLOW)
+ if (crt == REC_ALLOW) {
pig->ig_type = IGMP_ALLOW_NEW_SOURCES;
- else if (crt == REC_BLOCK)
+ } else if (crt == REC_BLOCK) {
pig->ig_type = IGMP_BLOCK_OLD_SOURCES;
+ }
ig_numsrc = htons(rsrcs);
- bcopy(&ig_numsrc, &pig->ig_numsrc, sizeof (ig_numsrc));
+ bcopy(&ig_numsrc, &pig->ig_numsrc, sizeof(ig_numsrc));
/*
* Count the new group record, and enqueue this
* packet if it wasn't already queued.
*/
m->m_pkthdr.vt_nrecs++;
- if (m != m0)
+ if (m != m0) {
IF_ENQUEUE(ifq, m);
+ }
nbytes += npbytes;
} while (nims != NULL);
drt |= crt;
IGMP_PRINTF(("%s: queued %d ALLOW_NEW, %d BLOCK_OLD\n", __func__,
nallow, nblock));
- return (nbytes);
+ return nbytes;
}
static int
igmp_v3_merge_state_changes(struct in_multi *inm, struct ifqueue *ifscq)
{
- struct ifqueue *gq;
- struct mbuf *m; /* pending state-change */
- struct mbuf *m0; /* copy of pending state-change */
- struct mbuf *mt; /* last state-change in packet */
- struct mbuf *n;
- int docopy, domerge;
- u_int recslen;
+ struct ifqueue *gq;
+ struct mbuf *m; /* pending state-change */
+ struct mbuf *m0; /* copy of pending state-change */
+ struct mbuf *mt; /* last state-change in packet */
+ struct mbuf *n;
+ int docopy, domerge;
+ u_int recslen;
INM_LOCK_ASSERT_HELD(inm);
* If there are further pending retransmissions, make a writable
* copy of each queued state-change message before merging.
*/
- if (inm->inm_scrv > 0)
+ if (inm->inm_scrv > 0) {
docopy = 1;
+ }
gq = &inm->inm_scq;
#ifdef IGMP_DEBUG
m->m_pkthdr.vt_nrecs <=
IGMP_V3_REPORT_MAXRECS) &&
(mt->m_pkthdr.len + recslen <=
- (inm->inm_ifp->if_mtu - IGMP_LEADINGSPACE)))
+ (inm->inm_ifp->if_mtu - IGMP_LEADINGSPACE))) {
domerge = 1;
+ }
}
if (!domerge && IF_QFULL(gq)) {
IGMP_PRINTF(("%s: copying 0x%llx\n", __func__,
(uint64_t)VM_KERNEL_ADDRPERM(m)));
m0 = m_dup(m, M_NOWAIT);
- if (m0 == NULL)
- return (ENOMEM);
+ if (m0 == NULL) {
+ return ENOMEM;
+ }
m0->m_nextpkt = NULL;
m = m->m_nextpkt;
}
(uint64_t)VM_KERNEL_ADDRPERM(ifscq)));
IF_ENQUEUE(ifscq, m0);
} else {
- struct mbuf *mtl; /* last mbuf of packet mt */
+ struct mbuf *mtl; /* last mbuf of packet mt */
IGMP_PRINTF(("%s: merging 0x%llx with ifscq tail "
"0x%llx)\n", __func__,
}
}
- return (0);
+ return 0;
}
/*
static uint32_t
igmp_v3_dispatch_general_query(struct igmp_ifinfo *igi)
{
- struct ifnet *ifp;
- struct in_multi *inm;
- struct in_multistep step;
- int retval, loop;
+ struct ifnet *ifp;
+ struct in_multi *inm;
+ struct in_multistep step;
+ int retval, loop;
IGI_LOCK_ASSERT_HELD(igi);
IN_FIRST_MULTI(step, inm);
while (inm != NULL) {
INM_LOCK(inm);
- if (inm->inm_ifp != ifp)
+ if (inm->inm_ifp != ifp) {
goto next;
+ }
switch (inm->inm_state) {
case IGMP_NOT_MEMBER:
*/
if (igi->igi_gq.ifq_head != NULL) {
igi->igi_v3_timer = 1 + IGMP_RANDOM_DELAY(
- IGMP_RESPONSE_BURST_INTERVAL);
+ IGMP_RESPONSE_BURST_INTERVAL);
}
- return (igi->igi_v3_timer);
+ return igi->igi_v3_timer;
}
/*
static void
igmp_sendpkt(struct mbuf *m)
{
- struct ip_moptions *imo;
- struct mbuf *ipopts, *m0;
- int error;
- struct route ro;
- struct ifnet *ifp;
+ struct ip_moptions *imo;
+ struct mbuf *ipopts, *m0;
+ int error;
+ struct route ro;
+ struct ifnet *ifp;
IGMP_PRINTF(("%s: transmit 0x%llx\n", __func__,
(uint64_t)VM_KERNEL_ADDRPERM(m)));
ipopts = igmp_sendra ? m_raopt : NULL;
- imo = ip_allocmoptions(M_WAITOK);
+ imo = ip_allocmoptions(Z_WAITOK);
if (imo == NULL) {
m_freem(m);
return;
* MANET interface and the routing protocol needs to see the
* updates), handle this now.
*/
- if (m->m_flags & M_IGMP_LOOP)
+ if (m->m_flags & M_IGMP_LOOP) {
imo->imo_multicast_ifp = lo_ifp;
- else
+ } else {
imo->imo_multicast_ifp = ifp;
+ }
if (m->m_flags & M_IGMPV2) {
m0 = m;
igmp_scrub_context(m0);
m->m_flags &= ~(M_PROTOFLAGS | M_IGMP_LOOP);
m0->m_pkthdr.rcvif = lo_ifp;
-#ifdef MAC
- mac_netinet_igmp_send(ifp, m0);
-#endif
if (ifp->if_eflags & IFEF_TXSTART) {
/*
*/
(void) m_set_service_class(m0, MBUF_SC_CTL);
}
- bzero(&ro, sizeof (ro));
+ bzero(&ro, sizeof(ro));
error = ip_output(m0, ipopts, &ro, 0, imo, NULL);
ROUTE_RELEASE(&ro);
static struct mbuf *
igmp_v3_encap_report(struct ifnet *ifp, struct mbuf *m)
{
- struct igmp_report *igmp;
- struct ip *ip;
- int hdrlen, igmpreclen;
+ struct igmp_report *igmp;
+ struct ip *ip;
+ unsigned int hdrlen, igmpreclen;
VERIFY((m->m_flags & M_PKTHDR));
if (m->m_flags & M_IGMPV3_HDR) {
igmpreclen -= hdrlen;
} else {
- M_PREPEND(m, hdrlen, M_DONTWAIT);
- if (m == NULL)
- return (NULL);
+ M_PREPEND(m, hdrlen, M_DONTWAIT, 1);
+ if (m == NULL) {
+ return NULL;
+ }
m->m_flags |= M_IGMPV3_HDR;
}
+ if (hdrlen + igmpreclen > USHRT_MAX) {
+ IGMP_PRINTF(("%s: invalid length %d\n", __func__, hdrlen + igmpreclen));
+ m_freem(m);
+ return NULL;
+ }
+
IGMP_PRINTF(("%s: igmpreclen is %d\n", __func__, igmpreclen));
ip = mtod(m, struct ip *);
ip->ip_tos = IPTOS_PREC_INTERNETCONTROL;
- ip->ip_len = hdrlen + igmpreclen;
+ ip->ip_len = (u_short)(hdrlen + igmpreclen);
ip->ip_off = IP_DF;
ip->ip_p = IPPROTO_IGMP;
ip->ip_sum = 0;
ip->ip_dst.s_addr = htonl(INADDR_ALLRPTS_GROUP);
- return (m);
+ return m;
}
#ifdef IGMP_DEBUG
igmp_rec_type_to_str(const int type)
{
switch (type) {
- case IGMP_CHANGE_TO_EXCLUDE_MODE:
- return "TO_EX";
- break;
- case IGMP_CHANGE_TO_INCLUDE_MODE:
- return "TO_IN";
- break;
- case IGMP_MODE_IS_EXCLUDE:
- return "MODE_EX";
- break;
- case IGMP_MODE_IS_INCLUDE:
- return "MODE_IN";
- break;
- case IGMP_ALLOW_NEW_SOURCES:
- return "ALLOW_NEW";
- break;
- case IGMP_BLOCK_OLD_SOURCES:
- return "BLOCK_OLD";
- break;
- default:
- break;
+ case IGMP_CHANGE_TO_EXCLUDE_MODE:
+ return "TO_EX";
+ case IGMP_CHANGE_TO_INCLUDE_MODE:
+ return "TO_IN";
+ case IGMP_MODE_IS_EXCLUDE:
+ return "MODE_EX";
+ case IGMP_MODE_IS_INCLUDE:
+ return "MODE_IN";
+ case IGMP_ALLOW_NEW_SOURCES:
+ return "ALLOW_NEW";
+ case IGMP_BLOCK_OLD_SOURCES:
+ return "BLOCK_OLD";
+ default:
+ break;
}
return "unknown";
}
#pragma unused(dp)
static int igmp_initialized = 0;
- VERIFY((pp->pr_flags & (PR_INITIALIZED|PR_ATTACHED)) == PR_ATTACHED);
+ VERIFY((pp->pr_flags & (PR_INITIALIZED | PR_ATTACHED)) == PR_ATTACHED);
- if (igmp_initialized)
+ if (igmp_initialized) {
return;
+ }
igmp_initialized = 1;
IGMP_PRINTF(("%s: initializing\n", __func__));
LIST_INIT(&igi_head);
m_raopt = igmp_ra_alloc();
-
- igi_size = sizeof (struct igmp_ifinfo);
- igi_zone = zinit(igi_size, IGI_ZONE_MAX * igi_size,
- 0, IGI_ZONE_NAME);
- if (igi_zone == NULL) {
- panic("%s: failed allocating %s", __func__, IGI_ZONE_NAME);
- /* NOTREACHED */
- }
- zone_change(igi_zone, Z_EXPAND, TRUE);
- zone_change(igi_zone, Z_CALLERACCT, FALSE);
}
projects / apple / xnu.git / blobdiff