[src/trunk]: src/sys/net Perform as a bridge within the AP for HostAP mode, t...

[onoe <onoe%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/bbece69338e5
branches:  trunk
changeset: 537648:bbece69338e5
user:      onoe <onoe%NetBSD.org@localhost>
date:      Fri Oct 04 04:25:05 2002 +0000

description:
Perform as a bridge within the AP for HostAP mode, to allow communication
between a wireless station and another wireless station.

diffstat:

 sys/net/if_ieee80211subr.c |  84 ++++++++++++++++++++++++++++++++++++++++++---
 1 files changed, 78 insertions(+), 6 deletions(-)

diffs (132 lines):

diff -r bb35d8581f11 -r bbece69338e5 sys/net/if_ieee80211subr.c
--- a/sys/net/if_ieee80211subr.c        Fri Oct 04 04:23:20 2002 +0000
+++ b/sys/net/if_ieee80211subr.c        Fri Oct 04 04:25:05 2002 +0000
@@ -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 @@
        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 @@
                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 @@
                m = ieee80211_decap(ifp, m);
                if (m == NULL)
                        goto err;
+               ifp->if_ipackets++;
+
+               /* 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 (ifp->if_bpf)
-                       bpf_mtap(ifp->if_bpf, m);
+                       /*
+                        * 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_ipackets++;
-               (*ifp->if_input)(ifp, m);
+                       (*ifp->if_input)(ifp, m);
+               }
                return;
 
        case IEEE80211_FC0_TYPE_MGT:
@@ -452,6 +521,9 @@
        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,