static void
hwmp_rootmode_cb(void *arg)
{
struct ieee80211vap *vap = (struct ieee80211vap *)arg;
struct ieee80211_hwmp_state *hs = vap->iv_hwmp;
struct ieee80211_mesh_state *ms = vap->iv_mesh;
struct ieee80211_meshpreq_ie preq;
IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP, vap->iv_bss,
"%s", "send broadcast PREQ");
preq.preq_flags = IEEE80211_MESHPREQ_FLAGS_AM;
if (ms->ms_flags & IEEE80211_MESHFLAGS_PORTAL)
preq.preq_flags |= IEEE80211_MESHPREQ_FLAGS_PR;
if (hs->hs_rootmode == IEEE80211_HWMP_ROOTMODE_PROACTIVE)
preq.preq_flags |= IEEE80211_MESHPREQ_FLAGS_PP;
preq.preq_hopcount = 0;
preq.preq_ttl = ms->ms_ttl;
preq.preq_id = ++hs->hs_preqid;
IEEE80211_ADDR_COPY(preq.preq_origaddr, vap->iv_myaddr);
preq.preq_origseq = ++hs->hs_seq;
preq.preq_lifetime = ticks_to_msecs(ieee80211_hwmp_roottimeout);
preq.preq_metric = IEEE80211_MESHLMETRIC_INITIALVAL;
preq.preq_tcount = 1;
IEEE80211_ADDR_COPY(PREQ_TADDR(0), broadcastaddr);
PREQ_TFLAGS(0) = IEEE80211_MESHPREQ_TFLAGS_TO |
IEEE80211_MESHPREQ_TFLAGS_RF;
PREQ_TSEQ(0) = 0;
vap->iv_stats.is_hwmp_rootreqs++;
hwmp_send_preq(vap->iv_bss, vap->iv_myaddr, broadcastaddr, &preq);
hwmp_rootmode_setup(vap);
}
static struct ieee80211_node *
hwmp_discover(struct ieee80211vap *vap,
const uint8_t dest[IEEE80211_ADDR_LEN], struct mbuf *m)
{
struct ieee80211_hwmp_state *hs = vap->iv_hwmp;
struct ieee80211_mesh_state *ms = vap->iv_mesh;
struct ieee80211_mesh_route *rt = NULL;
struct ieee80211_hwmp_route *hr;
struct ieee80211_meshpreq_ie preq;
struct ieee80211_node *ni;
int sendpreq = 0;
#ifdef IEEE80211_DEBUG
char ethstr[ETHER_ADDRSTRLEN + 1];
#endif
KASSERT(vap->iv_opmode == IEEE80211_M_MBSS,
("not a mesh vap, opmode %d", vap->iv_opmode));
KASSERT(!IEEE80211_ADDR_EQ(vap->iv_myaddr, dest),
("%s: discovering self!", __func__));
ni = NULL;
if (!IEEE80211_IS_MULTICAST(dest)) {
rt = ieee80211_mesh_rt_find(vap, dest);
if (rt == NULL) {
rt = ieee80211_mesh_rt_add(vap, dest);
if (rt == NULL) {
IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP,
ni, "unable to add discovery path to %s",
kether_ntoa(dest, ethstr));
vap->iv_stats.is_mesh_rtaddfailed++;
goto done;
}
}
hr = IEEE80211_MESH_ROUTE_PRIV(rt,
struct ieee80211_hwmp_route);
if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) {
if (hr->hr_origseq == 0)
hr->hr_origseq = ++hs->hs_seq;
rt->rt_metric = IEEE80211_MESHLMETRIC_INITIALVAL;
rt->rt_lifetime =
ticks_to_msecs(ieee80211_hwmp_pathtimeout);
/* XXX check preq retries */
sendpreq = 1;
if (m != NULL) {
IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_HWMP,
dest, "%s",
"start path discovery (src <none>)");
} else {
IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_HWMP,
dest,
"start path discovery (src %s)",
kether_ntoa(
mtod(m, struct ether_header *)->ether_shost,
ethstr));
}
/*
* Try to discover the path for this node.
*/
preq.preq_flags = 0;
preq.preq_hopcount = 0;
preq.preq_ttl = ms->ms_ttl;
preq.preq_id = ++hs->hs_preqid;
IEEE80211_ADDR_COPY(preq.preq_origaddr, vap->iv_myaddr);
preq.preq_origseq = hr->hr_origseq;
preq.preq_lifetime = rt->rt_lifetime;
preq.preq_metric = rt->rt_metric;
preq.preq_tcount = 1;
IEEE80211_ADDR_COPY(PREQ_TADDR(0), dest);
PREQ_TFLAGS(0) = 0;
if (ieee80211_hwmp_targetonly)
PREQ_TFLAGS(0) |= IEEE80211_MESHPREQ_TFLAGS_TO;
if (ieee80211_hwmp_replyforward)
PREQ_TFLAGS(0) |= IEEE80211_MESHPREQ_TFLAGS_RF;
PREQ_TFLAGS(0) |= IEEE80211_MESHPREQ_TFLAGS_USN;
PREQ_TSEQ(0) = 0;
/* XXX check return value */
hwmp_send_preq(vap->iv_bss, vap->iv_myaddr,
broadcastaddr, &preq);
}
if (rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID)
ni = ieee80211_find_txnode(vap, rt->rt_nexthop);
} else {
