diff options
author | rpaulo <rpaulo@FreeBSD.org> | 2009-10-19 11:17:46 +0000 |
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committer | rpaulo <rpaulo@FreeBSD.org> | 2009-10-19 11:17:46 +0000 |
commit | b6d3027cdb237316deca6f7e43db079428a2905b (patch) | |
tree | 37f586a85833a8e57e94183801417c4069ab3312 /sys/net80211/ieee80211_hwmp.c | |
parent | 77f2f73afbc16484478a8919e6d86807b82990bc (diff) | |
download | FreeBSD-src-b6d3027cdb237316deca6f7e43db079428a2905b.zip FreeBSD-src-b6d3027cdb237316deca6f7e43db079428a2905b.tar.gz |
HWMP fixes, namely:
* fix the processing of RANN frames
* the originator and target addresses were swapped and while it worked
fine, it was not spec compliant.
MFC after: 3 days
Diffstat (limited to 'sys/net80211/ieee80211_hwmp.c')
-rw-r--r-- | sys/net80211/ieee80211_hwmp.c | 63 |
1 files changed, 32 insertions, 31 deletions
diff --git a/sys/net80211/ieee80211_hwmp.c b/sys/net80211/ieee80211_hwmp.c index df98850..3481c3e 100644 --- a/sys/net80211/ieee80211_hwmp.c +++ b/sys/net80211/ieee80211_hwmp.c @@ -148,7 +148,7 @@ typedef uint32_t ieee80211_hwmp_seq; struct ieee80211_hwmp_route { ieee80211_hwmp_seq hr_seq; /* last HWMP seq seen from dst*/ ieee80211_hwmp_seq hr_preqid; /* last PREQ ID seen from dst */ - ieee80211_hwmp_seq hr_targetseq; /* seq. no. on our latest PREQ*/ + ieee80211_hwmp_seq hr_origseq; /* seq. no. on our latest PREQ*/ int hr_preqretries; }; struct ieee80211_hwmp_state { @@ -733,12 +733,12 @@ hwmp_recv_preq(struct ieee80211vap *vap, struct ieee80211_node *ni, prep.prep_flags = 0; prep.prep_hopcount = 0; prep.prep_ttl = ms->ms_ttl; - IEEE80211_ADDR_COPY(prep.prep_targetaddr, preq->preq_origaddr); - prep.prep_targetseq = preq->preq_origseq; + IEEE80211_ADDR_COPY(prep.prep_targetaddr, vap->iv_myaddr); + prep.prep_targetseq = ++hs->hs_seq; prep.prep_lifetime = preq->preq_lifetime; prep.prep_metric = IEEE80211_MESHLMETRIC_INITIALVAL; - IEEE80211_ADDR_COPY(prep.prep_origaddr, vap->iv_myaddr); - prep.prep_origseq = ++hs->hs_seq; + IEEE80211_ADDR_COPY(prep.prep_origaddr, preq->preq_origaddr); + prep.prep_origseq = preq->preq_origseq; hwmp_send_prep(ni, vap->iv_myaddr, wh->i_addr2, &prep); /* * Build the reverse path, if we don't have it already. @@ -784,13 +784,13 @@ hwmp_recv_preq(struct ieee80211vap *vap, struct ieee80211_node *ni, prep.prep_flags = 0; prep.prep_hopcount = 0; prep.prep_ttl = ms->ms_ttl; - IEEE80211_ADDR_COPY(prep.prep_origaddr, vap->iv_myaddr); + IEEE80211_ADDR_COPY(prep.prep_origaddr, rootmac); prep.prep_origseq = preq->preq_origseq; - prep.prep_targetseq = ++hs->hs_seq; prep.prep_lifetime = preq->preq_lifetime; prep.prep_metric = IEEE80211_MESHLMETRIC_INITIALVAL; - IEEE80211_ADDR_COPY(prep.prep_targetaddr, rootmac); - prep.prep_targetseq = PREQ_TSEQ(0); + IEEE80211_ADDR_COPY(prep.prep_targetaddr, + vap->iv_myaddr); + prep.prep_targetseq = ++hs->hs_seq; hwmp_send_prep(vap->iv_bss, vap->iv_myaddr, broadcastaddr, &prep); } @@ -848,13 +848,13 @@ hwmp_recv_preq(struct ieee80211vap *vap, struct ieee80211_node *ni, prep.prep_hopcount = rt->rt_nhops + 1; prep.prep_ttl = ms->ms_ttl; IEEE80211_ADDR_COPY(&prep.prep_targetaddr, - preq->preq_origaddr); + PREQ_TADDR(0)); prep.prep_targetseq = hrorig->hr_seq; prep.prep_lifetime = preq->preq_lifetime; prep.prep_metric = rt->rt_metric + ms->ms_pmetric->mpm_metric(ni); IEEE80211_ADDR_COPY(&prep.prep_origaddr, - PREQ_TADDR(0)); + preq->preq_origaddr); prep.prep_origseq = hrorig->hr_seq; hwmp_send_prep(ni, vap->iv_myaddr, broadcastaddr, &prep); @@ -951,19 +951,19 @@ hwmp_recv_prep(struct ieee80211vap *vap, struct ieee80211_node *ni, return; IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP, ni, - "received PREP from %s", ether_sprintf(prep->prep_origaddr)); + "received PREP from %s", ether_sprintf(prep->prep_targetaddr)); - rt = ieee80211_mesh_rt_find(vap, prep->prep_origaddr); + rt = ieee80211_mesh_rt_find(vap, prep->prep_targetaddr); if (rt == NULL) { /* * If we have no entry this could be a reply to a root PREQ. */ if (hs->hs_rootmode != IEEE80211_HWMP_ROOTMODE_DISABLED) { - rt = ieee80211_mesh_rt_add(vap, prep->prep_origaddr); + rt = ieee80211_mesh_rt_add(vap, prep->prep_targetaddr); if (rt == NULL) { IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP, ni, "unable to add PREP path to %s", - ether_sprintf(prep->prep_origaddr)); + ether_sprintf(prep->prep_targetaddr)); vap->iv_stats.is_mesh_rtaddfailed++; return; } @@ -974,7 +974,7 @@ hwmp_recv_prep(struct ieee80211vap *vap, struct ieee80211_node *ni, rt->rt_flags |= IEEE80211_MESHRT_FLAGS_VALID; IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP, ni, "add root path to %s nhops %d metric %d (PREP)", - ether_sprintf(prep->prep_origaddr), + ether_sprintf(prep->prep_targetaddr), rt->rt_nhops, rt->rt_metric); return; } @@ -984,30 +984,30 @@ hwmp_recv_prep(struct ieee80211vap *vap, struct ieee80211_node *ni, * Sequence number validation. */ hr = IEEE80211_MESH_ROUTE_PRIV(rt, struct ieee80211_hwmp_route); - if (HWMP_SEQ_LEQ(prep->prep_origseq, hr->hr_seq)) { + if (HWMP_SEQ_LEQ(prep->prep_targetseq, hr->hr_seq)) { IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP, ni, "discard PREP from %s, old seq no %u <= %u", - ether_sprintf(prep->prep_origaddr), - prep->prep_origseq, hr->hr_seq); + ether_sprintf(prep->prep_targetaddr), + prep->prep_targetseq, hr->hr_seq); return; } - hr->hr_seq = prep->prep_origseq; + hr->hr_seq = prep->prep_targetseq; /* * If it's NOT for us, propagate the PREP. */ - if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, prep->prep_targetaddr) && + if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, prep->prep_origaddr) && prep->prep_ttl > 1 && prep->prep_hopcount < hs->hs_maxhops) { struct ieee80211_meshprep_ie pprep; /* propagated PREP */ IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP, ni, "propagate PREP from %s", - ether_sprintf(prep->prep_origaddr)); + ether_sprintf(prep->prep_targetaddr)); memcpy(&pprep, prep, sizeof(pprep)); pprep.prep_hopcount += 1; pprep.prep_ttl -= 1; pprep.prep_metric += ms->ms_pmetric->mpm_metric(ni); - IEEE80211_ADDR_COPY(pprep.prep_origaddr, vap->iv_myaddr); + IEEE80211_ADDR_COPY(pprep.prep_targetaddr, vap->iv_myaddr); hwmp_send_prep(ni, vap->iv_myaddr, broadcastaddr, &pprep); } hr = IEEE80211_MESH_ROUTE_PRIV(rt, struct ieee80211_hwmp_route); @@ -1015,9 +1015,9 @@ hwmp_recv_prep(struct ieee80211vap *vap, struct ieee80211_node *ni, /* NB: never clobber a proxy entry */; IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP, ni, "discard PREP for %s, route is marked PROXY", - ether_sprintf(prep->prep_origaddr)); + ether_sprintf(prep->prep_targetaddr)); vap->iv_stats.is_hwmp_proxy++; - } else if (prep->prep_targetseq == hr->hr_targetseq) { + } else if (prep->prep_origseq == hr->hr_origseq) { /* * Check if we already have a path to this node. * If we do, check if this path reply contains a @@ -1041,14 +1041,14 @@ hwmp_recv_prep(struct ieee80211vap *vap, struct ieee80211_node *ni, } else { IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP, ni, "ignore PREP for %s, hopcount %d:%d metric %d:%d", - ether_sprintf(prep->prep_origaddr), + ether_sprintf(prep->prep_targetaddr), rt->rt_nhops, prep->prep_hopcount, rt->rt_metric, prep->prep_metric); } } else { IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP, ni, "discard PREP for %s, wrong seqno %u != %u", - ether_sprintf(prep->prep_origaddr), prep->prep_targetseq, + ether_sprintf(prep->prep_targetaddr), prep->prep_origseq, hr->hr_seq); vap->iv_stats.is_hwmp_wrongseq++; } @@ -1223,7 +1223,8 @@ hwmp_recv_rann(struct ieee80211vap *vap, struct ieee80211_node *ni, struct ieee80211_meshrann_ie prann; if (ni == vap->iv_bss || - ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) + ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED || + IEEE80211_ADDR_EQ(rann->rann_addr, vap->iv_myaddr)) return; rt = ieee80211_mesh_rt_find(vap, rann->rann_addr); @@ -1305,8 +1306,8 @@ hwmp_discover(struct ieee80211vap *vap, hr = IEEE80211_MESH_ROUTE_PRIV(rt, struct ieee80211_hwmp_route); if ((rt->rt_flags & IEEE80211_MESHRT_FLAGS_VALID) == 0) { - if (hr->hr_targetseq == 0) - hr->hr_targetseq = ++hs->hs_seq; + 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); @@ -1324,7 +1325,7 @@ hwmp_discover(struct ieee80211vap *vap, 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_targetseq; + preq.preq_origseq = hr->hr_origseq; preq.preq_lifetime = rt->rt_lifetime; preq.preq_metric = rt->rt_metric; preq.preq_tcount = 1; |