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Perform as a bridge within the AP for HostAP mode, to allow communication 

between a wireless station and another wireless station.
This commit is contained in:
onoe 2002-10-04 04:25:05 +00:00
parent d131e2b1a8
commit 5a2d7e0875
1 changed files with 79 additions and 7 deletions
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86
sys/net/if_ieee80211subr.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_ieee80211subr.c,v 1.18 2002/10/01 09:28:10 onoe Exp $ */
/* $NetBSD: if_ieee80211subr.c,v 1.19 2002/10/04 04:25:05 onoe Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -41,7 +41,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_ieee80211subr.c,v 1.18 2002/10/01 09:28:10 onoe Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_ieee80211subr.c,v 1.19 2002/10/04 04:25:05 onoe Exp $");
#include "opt_inet.h"
#include "bpfilter.h"
@ -230,10 +230,14 @@ ieee80211_input(struct ifnet *ifp, struct mbuf *m, int rssi, u_int32_t rstamp)
struct ieee80211com *ic = (void *)ifp;
struct ieee80211_node *ni;
struct ieee80211_frame *wh;
struct ether_header *eh;
void (*rh)(struct ieee80211com *, struct mbuf *, int, u_int);
struct mbuf *m1;
int error, len;
u_int8_t dir, subtype;
u_int8_t *bssid;
u_int16_t rxseq;
ALTQ_DECL(struct altq_pktattr pktattr;)
/* trim CRC here for WEP can find its own CRC at the end of packet. */
if (m->m_flags & M_HASFCS) {
@ -325,6 +329,30 @@ ieee80211_input(struct ifnet *ifp, struct mbuf *m, int rssi, u_int32_t rstamp)
case IEEE80211_M_HOSTAP:
if (dir != IEEE80211_FC1_DIR_TODS)
goto out;
/* check if source STA is associated */
ni = ieee80211_find_node(ic, wh->i_addr2);
if (ni == NULL) {
DPRINTF(("ieee80211_input: "
"data from unknown src %s\n",
ether_sprintf(wh->i_addr2)));
if ((ni = ieee80211_alloc_node(ic, wh->i_addr2,
1)) != NULL) {
IEEE80211_SEND_MGMT(ic, ni,
IEEE80211_FC0_SUBTYPE_DEAUTH,
IEEE80211_REASON_NOT_AUTHED);
ieee80211_free_node(ic, ni);
}
goto err;
}
if (ni->ni_associd == 0) {
DPRINTF(("ieee80211_input: "
"data from unassoc src %s\n",
ether_sprintf(wh->i_addr2)));
IEEE80211_SEND_MGMT(ic, ni,
IEEE80211_FC0_SUBTYPE_DISASSOC,
IEEE80211_REASON_NOT_ASSOCED);
goto err;
}
break;
}
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
@ -344,12 +372,53 @@ ieee80211_input(struct ifnet *ifp, struct mbuf *m, int rssi, u_int32_t rstamp)
m = ieee80211_decap(ifp, m);
if (m == NULL)
goto err;
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m);
#endif
ifp->if_ipackets++;
(*ifp->if_input)(ifp, m);
/* perform as a bridge within the AP */
m1 = NULL;
if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
eh = mtod(m, struct ether_header *);
if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
m1 = m_copym(m, 0, M_COPYALL, M_DONTWAIT);
if (m1 == NULL)
ifp->if_oerrors++;
else
m1->m_flags |= M_MCAST;
} else {
ni = ieee80211_find_node(ic, eh->ether_dhost);
if (ni != NULL && ni->ni_associd != 0) {
m1 = m;
m = NULL;
}
}
if (m1 != NULL) {
#ifdef ALTQ
if (ALTQ_IS_ENABLED(&ifp->if_snd))
altq_etherclassify(&ifp->if_snd, m1,
&pktattr);
#endif
len = m1->m_pkthdr.len;
IFQ_ENQUEUE(&ifp->if_snd, m1, &pktattr, error);
if (error)
ifp->if_oerrors++;
else {
if (m != NULL)
ifp->if_omcasts++;
ifp->if_obytes += len;
}
}
}
if (m != NULL) {
#if NBPFILTER > 0
/*
* If we forward packet into transmitter of the AP,
* we don't need to duplicate for DLT_EN10MB.
*/
if (ifp->if_bpf && m1 == NULL)
bpf_mtap(ifp->if_bpf, m);
#endif
(*ifp->if_input)(ifp, m);
}
return;
case IEEE80211_FC0_TYPE_MGT:
@ -452,6 +521,9 @@ ieee80211_mgmt_output(struct ifnet *ifp, struct ieee80211_node *ni,
if (ifp->if_flags & IFF_DEBUG) {
/* avoid to print too many frames */
if (ic->ic_opmode == IEEE80211_M_IBSS ||
#ifdef IEEE80211_DEBUG
ieee80211_debug > 1 ||
#endif
(type & IEEE80211_FC0_SUBTYPE_MASK) !=
IEEE80211_FC0_SUBTYPE_PROBE_RESP)
printf("%s: sending %s to %s\n", ifp->if_xname,