1 /* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */
4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
6 * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #include <sys/cdefs.h>
22 __FBSDID("$FreeBSD$");
26 #include <sys/param.h>
28 #include <sys/mutex.h>
30 #include <sys/kernel.h>
31 #include <sys/socket.h>
32 #include <sys/systm.h>
33 #include <sys/malloc.h>
34 #include <sys/queue.h>
35 #include <sys/taskqueue.h>
37 #include <sys/endian.h>
40 #include <net/if_var.h>
41 #include <net/ethernet.h>
42 #include <net/if_media.h>
44 #include <net80211/ieee80211_var.h>
45 #include <net80211/ieee80211_radiotap.h>
46 #include <net80211/ieee80211_ratectl.h>
47 #ifdef IEEE80211_SUPPORT_SUPERG
48 #include <net80211/ieee80211_superg.h>
51 #include <dev/rtwn/if_rtwnreg.h>
52 #include <dev/rtwn/if_rtwnvar.h>
54 #include <dev/rtwn/if_rtwn_beacon.h>
55 #include <dev/rtwn/if_rtwn_debug.h>
56 #include <dev/rtwn/if_rtwn_ridx.h>
57 #include <dev/rtwn/if_rtwn_tx.h>
60 rtwn_drain_mbufq(struct rtwn_softc *sc)
63 struct ieee80211_node *ni;
64 RTWN_ASSERT_LOCKED(sc);
65 while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
66 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
67 m->m_pkthdr.rcvif = NULL;
68 ieee80211_free_node(ni);
73 #ifdef IEEE80211_SUPPORT_SUPERG
75 rtwn_ff_flush_all(struct rtwn_softc *sc, union sec_param *data)
77 struct ieee80211com *ic = &sc->sc_ic;
80 ieee80211_ff_flush_all(ic);
86 rtwn_get_cipher(u_int ic_cipher)
91 case IEEE80211_CIPHER_NONE:
92 cipher = RTWN_TXDW1_CIPHER_NONE;
94 case IEEE80211_CIPHER_WEP:
95 case IEEE80211_CIPHER_TKIP:
96 cipher = RTWN_TXDW1_CIPHER_RC4;
98 case IEEE80211_CIPHER_AES_CCM:
99 cipher = RTWN_TXDW1_CIPHER_AES;
102 KASSERT(0, ("%s: unknown cipher %d\n", __func__,
104 return (RTWN_TXDW1_CIPHER_SM4);
111 rtwn_tx_data(struct rtwn_softc *sc, struct ieee80211_node *ni,
114 const struct ieee80211_txparam *tp = ni->ni_txparms;
115 struct ieee80211com *ic = &sc->sc_ic;
116 struct ieee80211vap *vap = ni->ni_vap;
117 struct ieee80211_key *k = NULL;
118 struct ieee80211_frame *wh;
119 struct rtwn_tx_desc_common *txd;
120 struct rtwn_tx_buf buf;
121 uint8_t rate, ridx, type;
125 RTWN_ASSERT_LOCKED(sc);
127 wh = mtod(m, struct ieee80211_frame *);
128 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
129 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
131 /* Choose a TX rate index. */
132 if (type == IEEE80211_FC0_TYPE_MGT ||
133 type == IEEE80211_FC0_TYPE_CTL ||
134 (m->m_flags & M_EAPOL) != 0)
137 rate = tp->mcastrate;
138 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE)
139 rate = tp->ucastrate;
141 if (sc->sc_ratectl == RTWN_RATECTL_NET80211) {
142 /* XXX pass pktlen */
143 (void) ieee80211_ratectl_rate(ni, NULL, 0);
144 rate = ni->ni_txrate;
146 if (ni->ni_flags & IEEE80211_NODE_HT)
147 rate = IEEE80211_RATE_MCS | 0x4; /* MCS4 */
148 else if (ic->ic_curmode != IEEE80211_MODE_11B)
149 rate = ridx2rate[RTWN_RIDX_OFDM36];
151 rate = ridx2rate[RTWN_RIDX_CCK55];
155 ridx = rate2ridx(rate);
157 cipher = IEEE80211_CIPHER_NONE;
158 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
159 k = ieee80211_crypto_encap(ni, m);
161 device_printf(sc->sc_dev,
162 "ieee80211_crypto_encap returns NULL.\n");
165 if (!(k->wk_flags & IEEE80211_KEY_SWCRYPT))
166 cipher = k->wk_cipher->ic_cipher;
168 /* in case packet header moved, reset pointer */
169 wh = mtod(m, struct ieee80211_frame *);
172 /* Fill Tx descriptor. */
173 txd = (struct rtwn_tx_desc_common *)&buf;
174 memset(txd, 0, sc->txdesc_len);
175 txd->txdw1 = htole32(SM(RTWN_TXDW1_CIPHER, rtwn_get_cipher(cipher)));
177 rtwn_fill_tx_desc(sc, ni, m, txd, ridx, tp->maxretry);
179 if (ieee80211_radiotap_active_vap(vap)) {
180 struct rtwn_tx_radiotap_header *tap = &sc->sc_txtap;
182 tap->wt_flags = rtwn_tx_radiotap_flags(sc, txd);
184 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
185 ieee80211_radiotap_tx(vap, m);
188 return (rtwn_tx_start(sc, ni, m, (uint8_t *)txd, type, 0));
192 rtwn_tx_raw(struct rtwn_softc *sc, struct ieee80211_node *ni,
193 struct mbuf *m, const struct ieee80211_bpf_params *params)
195 struct ieee80211vap *vap = ni->ni_vap;
196 struct ieee80211_key *k = NULL;
197 struct ieee80211_frame *wh;
198 struct rtwn_tx_desc_common *txd;
199 struct rtwn_tx_buf buf;
203 /* Encrypt the frame if need be. */
204 cipher = IEEE80211_CIPHER_NONE;
205 if (params->ibp_flags & IEEE80211_BPF_CRYPTO) {
206 /* Retrieve key for TX. */
207 k = ieee80211_crypto_encap(ni, m);
209 device_printf(sc->sc_dev,
210 "ieee80211_crypto_encap returns NULL.\n");
213 if (!(k->wk_flags & IEEE80211_KEY_SWCRYPT))
214 cipher = k->wk_cipher->ic_cipher;
217 wh = mtod(m, struct ieee80211_frame *);
218 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
220 /* Fill Tx descriptor. */
221 txd = (struct rtwn_tx_desc_common *)&buf;
222 memset(txd, 0, sc->txdesc_len);
223 txd->txdw1 = htole32(SM(RTWN_TXDW1_CIPHER, rtwn_get_cipher(cipher)));
225 rtwn_fill_tx_desc_raw(sc, ni, m, txd, params);
227 if (ieee80211_radiotap_active_vap(vap)) {
228 struct rtwn_tx_radiotap_header *tap = &sc->sc_txtap;
230 tap->wt_flags = rtwn_tx_radiotap_flags(sc, txd);
232 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
233 ieee80211_radiotap_tx(vap, m);
236 return (rtwn_tx_start(sc, ni, m, (uint8_t *)txd, type, 0));
240 rtwn_transmit(struct ieee80211com *ic, struct mbuf *m)
242 struct rtwn_softc *sc = ic->ic_softc;
246 if ((sc->sc_flags & RTWN_RUNNING) == 0) {
250 error = mbufq_enqueue(&sc->sc_snd, m);
262 rtwn_start(struct rtwn_softc *sc)
264 struct ieee80211_node *ni;
267 RTWN_ASSERT_LOCKED(sc);
268 while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
269 if (sc->qfullmsk != 0) {
270 mbufq_prepend(&sc->sc_snd, m);
273 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
274 m->m_pkthdr.rcvif = NULL;
276 RTWN_DPRINTF(sc, RTWN_DEBUG_XMIT,
277 "%s: called; m %p, ni %p\n", __func__, m, ni);
279 if (rtwn_tx_data(sc, ni, m) != 0) {
280 if_inc_counter(ni->ni_vap->iv_ifp,
281 IFCOUNTER_OERRORS, 1);
284 ieee80211_tx_watchdog_refresh(ni->ni_ic, -1, 0);
286 ieee80211_free_node(ni);
293 rtwn_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
294 const struct ieee80211_bpf_params *params)
296 struct ieee80211com *ic = ni->ni_ic;
297 struct rtwn_softc *sc = ic->ic_softc;
300 RTWN_DPRINTF(sc, RTWN_DEBUG_XMIT, "%s: called; m %p, ni %p\n",
303 /* prevent management frames from being sent if we're not ready */
305 if (!(sc->sc_flags & RTWN_RUNNING)) {
310 if (sc->qfullmsk != 0) {
315 if (params == NULL) {
317 * Legacy path; interpret frame contents to decide
318 * precisely how to send the frame.
320 error = rtwn_tx_data(sc, ni, m);
323 * Caller supplied explicit parameters to use in
326 error = rtwn_tx_raw(sc, ni, m, params);
331 if (m->m_flags & M_TXCB)
332 ieee80211_process_callback(ni, m, 1);