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deliver an l2uf frame on sta join to prime the bridge

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Obtained from:	madwifi
MFC after:	1 week
This commit is contained in:
Sam Leffler 2006-03-06 17:26:16 +00:00
parent 097131fffe
commit 66ef39690f
1 changed files with 51 additions and 0 deletions
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51
sys/net80211/ieee80211_input.c
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@ -1711,6 +1711,56 @@ ieee80211_saveie(u_int8_t **iep, const u_int8_t *ie)
/* XXX note failure */
}
/* XXX find a better place for definition */
struct l2_update_frame {
struct ether_header eh;
u_int8_t dsap;
u_int8_t ssap;
u_int8_t control;
u_int8_t xid[3];
} __packed;
/*
* Deliver a TGf L2UF frame on behalf of a station.
* This primes any bridge when the station is roaming
* between ap's on the same wired network.
*/
static void
ieee80211_deliver_l2uf(struct ieee80211_node *ni)
{
struct ieee80211com *ic = ni->ni_ic;
struct ifnet *ifp = ic->ic_ifp;
struct mbuf *m;
struct l2_update_frame *l2uf;
struct ether_header *eh;
m = m_gethdr(M_NOWAIT, MT_DATA);
if (m == NULL) {
IEEE80211_NOTE(ic, IEEE80211_MSG_ASSOC, ni,
"%s", "no mbuf for l2uf frame");
ic->ic_stats.is_rx_nobuf++; /* XXX not right */
return;
}
l2uf = mtod(m, struct l2_update_frame *);
eh = &l2uf->eh;
/* dst: Broadcast address */
IEEE80211_ADDR_COPY(eh->ether_dhost, ifp->if_broadcastaddr);
/* src: associated STA */
IEEE80211_ADDR_COPY(eh->ether_shost, ni->ni_macaddr);
eh->ether_type = htons(sizeof(*l2uf) - sizeof(*eh));
l2uf->dsap = 0;
l2uf->ssap = 0;
l2uf->control = 0xf5;
l2uf->xid[0] = 0x81;
l2uf->xid[1] = 0x80;
l2uf->xid[2] = 0x00;
m->m_pkthdr.len = m->m_len = sizeof(*l2uf);
m->m_pkthdr.rcvif = ifp;
ieee80211_deliver_data(ic, ni, m);
}
void
ieee80211_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0,
struct ieee80211_node *ni,
@ -2353,6 +2403,7 @@ ieee80211_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0,
ni->ni_wme_ie = NULL;
ni->ni_flags &= ~IEEE80211_NODE_QOS;
}
ieee80211_deliver_l2uf(ni);
ieee80211_node_join(ic, ni, resp);
break;
}