1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/etherdevice.h>
19 #include <linux/module.h>
20 #include <linux/inetdevice.h>
21 #include <net/cfg80211.h>
22 #include <net/rtnetlink.h>
23 #include <net/addrconf.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <net/ipv6.h>
26 #include <brcmu_utils.h>
27 #include <brcmu_wifi.h>
28
29 #include "core.h"
30 #include "bus.h"
31 #include "debug.h"
32 #include "fwil_types.h"
33 #include "p2p.h"
34 #include "pno.h"
35 #include "cfg80211.h"
36 #include "fwil.h"
37 #include "feature.h"
38 #include "proto.h"
39 #include "pcie.h"
40 #include "common.h"
41
42 #define MAX_WAIT_FOR_8021X_TX msecs_to_jiffies(950)
43
44 #define BRCMF_BSSIDX_INVALID -1
45
brcmf_ifname(struct brcmf_if * ifp)46 char *brcmf_ifname(struct brcmf_if *ifp)
47 {
48 if (!ifp)
49 return "<if_null>";
50
51 if (ifp->ndev)
52 return ifp->ndev->name;
53
54 return "<if_none>";
55 }
56
brcmf_get_ifp(struct brcmf_pub * drvr,int ifidx)57 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx)
58 {
59 struct brcmf_if *ifp;
60 s32 bsscfgidx;
61
62 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
63 brcmf_err("ifidx %d out of range\n", ifidx);
64 return NULL;
65 }
66
67 ifp = NULL;
68 bsscfgidx = drvr->if2bss[ifidx];
69 if (bsscfgidx >= 0)
70 ifp = drvr->iflist[bsscfgidx];
71
72 return ifp;
73 }
74
brcmf_configure_arp_nd_offload(struct brcmf_if * ifp,bool enable)75 void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable)
76 {
77 s32 err;
78 u32 mode;
79
80 if (enable)
81 mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY;
82 else
83 mode = 0;
84
85 /* Try to set and enable ARP offload feature, this may fail, then it */
86 /* is simply not supported and err 0 will be returned */
87 err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode);
88 if (err) {
89 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n",
90 mode, err);
91 } else {
92 err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable);
93 if (err) {
94 brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n",
95 enable, err);
96 } else {
97 brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n",
98 enable, mode);
99 }
100 }
101
102 err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable);
103 if (err) {
104 brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n",
105 enable, err);
106 } else {
107 brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n",
108 enable, mode);
109 }
110 }
111
_brcmf_set_multicast_list(struct work_struct * work)112 static void _brcmf_set_multicast_list(struct work_struct *work)
113 {
114 struct brcmf_if *ifp;
115 struct net_device *ndev;
116 struct netdev_hw_addr *ha;
117 u32 cmd_value, cnt;
118 __le32 cnt_le;
119 char *buf, *bufp;
120 u32 buflen;
121 s32 err;
122
123 ifp = container_of(work, struct brcmf_if, multicast_work);
124
125 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
126
127 ndev = ifp->ndev;
128
129 /* Determine initial value of allmulti flag */
130 cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
131
132 /* Send down the multicast list first. */
133 cnt = netdev_mc_count(ndev);
134 buflen = sizeof(cnt) + (cnt * ETH_ALEN);
135 buf = kmalloc(buflen, GFP_ATOMIC);
136 if (!buf)
137 return;
138 bufp = buf;
139
140 cnt_le = cpu_to_le32(cnt);
141 memcpy(bufp, &cnt_le, sizeof(cnt_le));
142 bufp += sizeof(cnt_le);
143
144 netdev_for_each_mc_addr(ha, ndev) {
145 if (!cnt)
146 break;
147 memcpy(bufp, ha->addr, ETH_ALEN);
148 bufp += ETH_ALEN;
149 cnt--;
150 }
151
152 err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
153 if (err < 0) {
154 brcmf_err("Setting mcast_list failed, %d\n", err);
155 cmd_value = cnt ? true : cmd_value;
156 }
157
158 kfree(buf);
159
160 /*
161 * Now send the allmulti setting. This is based on the setting in the
162 * net_device flags, but might be modified above to be turned on if we
163 * were trying to set some addresses and dongle rejected it...
164 */
165 err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
166 if (err < 0)
167 brcmf_err("Setting allmulti failed, %d\n", err);
168
169 /*Finally, pick up the PROMISC flag */
170 cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
171 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
172 if (err < 0)
173 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
174 err);
175 brcmf_configure_arp_nd_offload(ifp, !cmd_value);
176 }
177
178 #if IS_ENABLED(CONFIG_IPV6)
_brcmf_update_ndtable(struct work_struct * work)179 static void _brcmf_update_ndtable(struct work_struct *work)
180 {
181 struct brcmf_if *ifp;
182 int i, ret;
183
184 ifp = container_of(work, struct brcmf_if, ndoffload_work);
185
186 /* clear the table in firmware */
187 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0);
188 if (ret) {
189 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret);
190 return;
191 }
192
193 for (i = 0; i < ifp->ipv6addr_idx; i++) {
194 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip",
195 &ifp->ipv6_addr_tbl[i],
196 sizeof(struct in6_addr));
197 if (ret)
198 brcmf_err("add nd ip err %d\n", ret);
199 }
200 }
201 #else
_brcmf_update_ndtable(struct work_struct * work)202 static void _brcmf_update_ndtable(struct work_struct *work)
203 {
204 }
205 #endif
206
brcmf_netdev_set_mac_address(struct net_device * ndev,void * addr)207 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
208 {
209 struct brcmf_if *ifp = netdev_priv(ndev);
210 struct sockaddr *sa = (struct sockaddr *)addr;
211 int err;
212
213 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
214
215 err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", sa->sa_data,
216 ETH_ALEN);
217 if (err < 0) {
218 brcmf_err("Setting cur_etheraddr failed, %d\n", err);
219 } else {
220 brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data);
221 memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN);
222 memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
223 }
224 return err;
225 }
226
brcmf_netdev_set_multicast_list(struct net_device * ndev)227 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
228 {
229 struct brcmf_if *ifp = netdev_priv(ndev);
230
231 schedule_work(&ifp->multicast_work);
232 }
233
234 /**
235 * brcmf_skb_is_iapp - checks if skb is an IAPP packet
236 *
237 * @skb: skb to check
238 */
brcmf_skb_is_iapp(struct sk_buff * skb)239 static bool brcmf_skb_is_iapp(struct sk_buff *skb)
240 {
241 static const u8 iapp_l2_update_packet[6] __aligned(2) = {
242 0x00, 0x01, 0xaf, 0x81, 0x01, 0x00,
243 };
244 unsigned char *eth_data;
245 #if !defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
246 const u16 *a, *b;
247 #endif
248
249 if (skb->len - skb->mac_len != 6 ||
250 !is_multicast_ether_addr(eth_hdr(skb)->h_dest))
251 return false;
252
253 eth_data = skb_mac_header(skb) + ETH_HLEN;
254 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
255 return !(((*(const u32 *)eth_data) ^ (*(const u32 *)iapp_l2_update_packet)) |
256 ((*(const u16 *)(eth_data + 4)) ^ (*(const u16 *)(iapp_l2_update_packet + 4))));
257 #else
258 a = (const u16 *)eth_data;
259 b = (const u16 *)iapp_l2_update_packet;
260
261 return !((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]));
262 #endif
263 }
264
brcmf_netdev_start_xmit(struct sk_buff * skb,struct net_device * ndev)265 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
266 struct net_device *ndev)
267 {
268 int ret;
269 struct brcmf_if *ifp = netdev_priv(ndev);
270 struct brcmf_pub *drvr = ifp->drvr;
271 struct ethhdr *eh;
272 int head_delta;
273
274 brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
275
276 /* Can the device send data? */
277 if (drvr->bus_if->state != BRCMF_BUS_UP) {
278 brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
279 netif_stop_queue(ndev);
280 dev_kfree_skb(skb);
281 ret = -ENODEV;
282 goto done;
283 }
284
285 /* Some recent Broadcom's firmwares disassociate STA when they receive
286 * an 802.11f ADD frame. This behavior can lead to a local DoS security
287 * issue. Attacker may trigger disassociation of any STA by sending a
288 * proper Ethernet frame to the wireless interface.
289 *
290 * Moreover this feature may break AP interfaces in some specific
291 * setups. This applies e.g. to the bridge with hairpin mode enabled and
292 * IFLA_BRPORT_MCAST_TO_UCAST set. IAPP packet generated by a firmware
293 * will get passed back to the wireless interface and cause immediate
294 * disassociation of a just-connected STA.
295 */
296 if (!drvr->settings->iapp && brcmf_skb_is_iapp(skb)) {
297 dev_kfree_skb(skb);
298 ret = -EINVAL;
299 goto done;
300 }
301
302 /* Make sure there's enough writeable headroom */
303 if (skb_headroom(skb) < drvr->hdrlen || skb_header_cloned(skb)) {
304 head_delta = max_t(int, drvr->hdrlen - skb_headroom(skb), 0);
305
306 brcmf_dbg(INFO, "%s: insufficient headroom (%d)\n",
307 brcmf_ifname(ifp), head_delta);
308 atomic_inc(&drvr->bus_if->stats.pktcowed);
309 ret = pskb_expand_head(skb, ALIGN(head_delta, NET_SKB_PAD), 0,
310 GFP_ATOMIC);
311 if (ret < 0) {
312 brcmf_err("%s: failed to expand headroom\n",
313 brcmf_ifname(ifp));
314 atomic_inc(&drvr->bus_if->stats.pktcow_failed);
315 goto done;
316 }
317 }
318
319 /* validate length for ether packet */
320 if (skb->len < sizeof(*eh)) {
321 ret = -EINVAL;
322 dev_kfree_skb(skb);
323 goto done;
324 }
325
326 eh = (struct ethhdr *)(skb->data);
327
328 if (eh->h_proto == htons(ETH_P_PAE))
329 atomic_inc(&ifp->pend_8021x_cnt);
330
331 /* determine the priority */
332 if ((skb->priority == 0) || (skb->priority > 7))
333 skb->priority = cfg80211_classify8021d(skb, NULL);
334
335 ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb);
336 if (ret < 0)
337 brcmf_txfinalize(ifp, skb, false);
338
339 done:
340 if (ret) {
341 ndev->stats.tx_dropped++;
342 } else {
343 ndev->stats.tx_packets++;
344 ndev->stats.tx_bytes += skb->len;
345 }
346
347 /* Return ok: we always eat the packet */
348 return NETDEV_TX_OK;
349 }
350
brcmf_txflowblock_if(struct brcmf_if * ifp,enum brcmf_netif_stop_reason reason,bool state)351 void brcmf_txflowblock_if(struct brcmf_if *ifp,
352 enum brcmf_netif_stop_reason reason, bool state)
353 {
354 unsigned long flags;
355
356 if (!ifp || !ifp->ndev)
357 return;
358
359 brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n",
360 ifp->bsscfgidx, ifp->netif_stop, reason, state);
361
362 spin_lock_irqsave(&ifp->netif_stop_lock, flags);
363 if (state) {
364 if (!ifp->netif_stop)
365 netif_stop_queue(ifp->ndev);
366 ifp->netif_stop |= reason;
367 } else {
368 ifp->netif_stop &= ~reason;
369 if (!ifp->netif_stop)
370 netif_wake_queue(ifp->ndev);
371 }
372 spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
373 }
374
brcmf_netif_rx(struct brcmf_if * ifp,struct sk_buff * skb)375 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
376 {
377 /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new
378 * STA connects to the AP interface. This is an obsoleted standard most
379 * users don't use, so don't pass these frames up unless requested.
380 */
381 if (!ifp->drvr->settings->iapp && brcmf_skb_is_iapp(skb)) {
382 brcmu_pkt_buf_free_skb(skb);
383 return;
384 }
385
386 if (skb->pkt_type == PACKET_MULTICAST)
387 ifp->ndev->stats.multicast++;
388
389 if (!(ifp->ndev->flags & IFF_UP)) {
390 brcmu_pkt_buf_free_skb(skb);
391 return;
392 }
393
394 ifp->ndev->stats.rx_bytes += skb->len;
395 ifp->ndev->stats.rx_packets++;
396
397 brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
398 if (in_interrupt())
399 netif_rx(skb);
400 else
401 /* If the receive is not processed inside an ISR,
402 * the softirqd must be woken explicitly to service
403 * the NET_RX_SOFTIRQ. This is handled by netif_rx_ni().
404 */
405 netif_rx_ni(skb);
406 }
407
brcmf_netif_mon_rx(struct brcmf_if * ifp,struct sk_buff * skb)408 void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb)
409 {
410 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_RADIOTAP)) {
411 /* Do nothing */
412 } else {
413 struct ieee80211_radiotap_header *radiotap;
414
415 /* TODO: use RX status to fill some radiotap data */
416 radiotap = skb_push(skb, sizeof(*radiotap));
417 memset(radiotap, 0, sizeof(*radiotap));
418 radiotap->it_len = cpu_to_le16(sizeof(*radiotap));
419
420 /* TODO: 4 bytes with receive status? */
421 skb->len -= 4;
422 }
423
424 skb->dev = ifp->ndev;
425 skb_reset_mac_header(skb);
426 skb->pkt_type = PACKET_OTHERHOST;
427 skb->protocol = htons(ETH_P_802_2);
428
429 brcmf_netif_rx(ifp, skb);
430 }
431
brcmf_rx_hdrpull(struct brcmf_pub * drvr,struct sk_buff * skb,struct brcmf_if ** ifp)432 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb,
433 struct brcmf_if **ifp)
434 {
435 int ret;
436
437 /* process and remove protocol-specific header */
438 ret = brcmf_proto_hdrpull(drvr, true, skb, ifp);
439
440 if (ret || !(*ifp) || !(*ifp)->ndev) {
441 if (ret != -ENODATA && *ifp)
442 (*ifp)->ndev->stats.rx_errors++;
443 brcmu_pkt_buf_free_skb(skb);
444 return -ENODATA;
445 }
446
447 skb->protocol = eth_type_trans(skb, (*ifp)->ndev);
448 return 0;
449 }
450
brcmf_rx_frame(struct device * dev,struct sk_buff * skb,bool handle_event)451 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event)
452 {
453 struct brcmf_if *ifp;
454 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
455 struct brcmf_pub *drvr = bus_if->drvr;
456
457 brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
458
459 if (brcmf_rx_hdrpull(drvr, skb, &ifp))
460 return;
461
462 if (brcmf_proto_is_reorder_skb(skb)) {
463 brcmf_proto_rxreorder(ifp, skb);
464 } else {
465 /* Process special event packets */
466 if (handle_event)
467 brcmf_fweh_process_skb(ifp->drvr, skb);
468
469 brcmf_netif_rx(ifp, skb);
470 }
471 }
472
brcmf_rx_event(struct device * dev,struct sk_buff * skb)473 void brcmf_rx_event(struct device *dev, struct sk_buff *skb)
474 {
475 struct brcmf_if *ifp;
476 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
477 struct brcmf_pub *drvr = bus_if->drvr;
478
479 brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
480
481 if (brcmf_rx_hdrpull(drvr, skb, &ifp))
482 return;
483
484 brcmf_fweh_process_skb(ifp->drvr, skb);
485 brcmu_pkt_buf_free_skb(skb);
486 }
487
brcmf_txfinalize(struct brcmf_if * ifp,struct sk_buff * txp,bool success)488 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success)
489 {
490 struct ethhdr *eh;
491 u16 type;
492
493 eh = (struct ethhdr *)(txp->data);
494 type = ntohs(eh->h_proto);
495
496 if (type == ETH_P_PAE) {
497 atomic_dec(&ifp->pend_8021x_cnt);
498 if (waitqueue_active(&ifp->pend_8021x_wait))
499 wake_up(&ifp->pend_8021x_wait);
500 }
501
502 if (!success)
503 ifp->ndev->stats.tx_errors++;
504
505 brcmu_pkt_buf_free_skb(txp);
506 }
507
brcmf_ethtool_get_drvinfo(struct net_device * ndev,struct ethtool_drvinfo * info)508 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
509 struct ethtool_drvinfo *info)
510 {
511 struct brcmf_if *ifp = netdev_priv(ndev);
512 struct brcmf_pub *drvr = ifp->drvr;
513 char drev[BRCMU_DOTREV_LEN] = "n/a";
514
515 if (drvr->revinfo.result == 0)
516 brcmu_dotrev_str(drvr->revinfo.driverrev, drev);
517 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
518 strlcpy(info->version, drev, sizeof(info->version));
519 strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
520 strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
521 sizeof(info->bus_info));
522 }
523
524 static const struct ethtool_ops brcmf_ethtool_ops = {
525 .get_drvinfo = brcmf_ethtool_get_drvinfo,
526 };
527
brcmf_netdev_stop(struct net_device * ndev)528 static int brcmf_netdev_stop(struct net_device *ndev)
529 {
530 struct brcmf_if *ifp = netdev_priv(ndev);
531
532 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
533
534 brcmf_cfg80211_down(ndev);
535
536 brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0);
537
538 brcmf_net_setcarrier(ifp, false);
539
540 return 0;
541 }
542
brcmf_netdev_open(struct net_device * ndev)543 static int brcmf_netdev_open(struct net_device *ndev)
544 {
545 struct brcmf_if *ifp = netdev_priv(ndev);
546 struct brcmf_pub *drvr = ifp->drvr;
547 struct brcmf_bus *bus_if = drvr->bus_if;
548 u32 toe_ol;
549
550 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
551
552 /* If bus is not ready, can't continue */
553 if (bus_if->state != BRCMF_BUS_UP) {
554 brcmf_err("failed bus is not ready\n");
555 return -EAGAIN;
556 }
557
558 atomic_set(&ifp->pend_8021x_cnt, 0);
559
560 /* Get current TOE mode from dongle */
561 if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
562 && (toe_ol & TOE_TX_CSUM_OL) != 0)
563 ndev->features |= NETIF_F_IP_CSUM;
564 else
565 ndev->features &= ~NETIF_F_IP_CSUM;
566
567 if (brcmf_cfg80211_up(ndev)) {
568 brcmf_err("failed to bring up cfg80211\n");
569 return -EIO;
570 }
571
572 /* Clear, carrier, set when connected or AP mode. */
573 netif_carrier_off(ndev);
574 return 0;
575 }
576
577 static const struct net_device_ops brcmf_netdev_ops_pri = {
578 .ndo_open = brcmf_netdev_open,
579 .ndo_stop = brcmf_netdev_stop,
580 .ndo_start_xmit = brcmf_netdev_start_xmit,
581 .ndo_set_mac_address = brcmf_netdev_set_mac_address,
582 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
583 };
584
brcmf_net_attach(struct brcmf_if * ifp,bool rtnl_locked)585 int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
586 {
587 struct brcmf_pub *drvr = ifp->drvr;
588 struct net_device *ndev;
589 s32 err;
590
591 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,
592 ifp->mac_addr);
593 ndev = ifp->ndev;
594
595 /* set appropriate operations */
596 ndev->netdev_ops = &brcmf_netdev_ops_pri;
597
598 ndev->needed_headroom += drvr->hdrlen;
599 ndev->ethtool_ops = &brcmf_ethtool_ops;
600
601 /* set the mac address & netns */
602 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
603 dev_net_set(ndev, wiphy_net(cfg_to_wiphy(drvr->config)));
604
605 INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
606 INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable);
607
608 if (rtnl_locked)
609 err = register_netdevice(ndev);
610 else
611 err = register_netdev(ndev);
612 if (err != 0) {
613 brcmf_err("couldn't register the net device\n");
614 goto fail;
615 }
616
617 ndev->priv_destructor = brcmf_cfg80211_free_netdev;
618 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
619 return 0;
620
621 fail:
622 drvr->iflist[ifp->bsscfgidx] = NULL;
623 ndev->netdev_ops = NULL;
624 return -EBADE;
625 }
626
brcmf_net_detach(struct net_device * ndev,bool rtnl_locked)627 static void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked)
628 {
629 if (ndev->reg_state == NETREG_REGISTERED) {
630 if (rtnl_locked)
631 unregister_netdevice(ndev);
632 else
633 unregister_netdev(ndev);
634 } else {
635 brcmf_cfg80211_free_netdev(ndev);
636 free_netdev(ndev);
637 }
638 }
639
brcmf_net_setcarrier(struct brcmf_if * ifp,bool on)640 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on)
641 {
642 struct net_device *ndev;
643
644 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx,
645 on);
646
647 ndev = ifp->ndev;
648 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on);
649 if (on) {
650 if (!netif_carrier_ok(ndev))
651 netif_carrier_on(ndev);
652
653 } else {
654 if (netif_carrier_ok(ndev))
655 netif_carrier_off(ndev);
656 }
657 }
658
brcmf_net_p2p_open(struct net_device * ndev)659 static int brcmf_net_p2p_open(struct net_device *ndev)
660 {
661 brcmf_dbg(TRACE, "Enter\n");
662
663 return brcmf_cfg80211_up(ndev);
664 }
665
brcmf_net_p2p_stop(struct net_device * ndev)666 static int brcmf_net_p2p_stop(struct net_device *ndev)
667 {
668 brcmf_dbg(TRACE, "Enter\n");
669
670 return brcmf_cfg80211_down(ndev);
671 }
672
brcmf_net_p2p_start_xmit(struct sk_buff * skb,struct net_device * ndev)673 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
674 struct net_device *ndev)
675 {
676 if (skb)
677 dev_kfree_skb_any(skb);
678
679 return NETDEV_TX_OK;
680 }
681
682 static const struct net_device_ops brcmf_netdev_ops_p2p = {
683 .ndo_open = brcmf_net_p2p_open,
684 .ndo_stop = brcmf_net_p2p_stop,
685 .ndo_start_xmit = brcmf_net_p2p_start_xmit
686 };
687
brcmf_net_p2p_attach(struct brcmf_if * ifp)688 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
689 {
690 struct net_device *ndev;
691
692 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,
693 ifp->mac_addr);
694 ndev = ifp->ndev;
695
696 ndev->netdev_ops = &brcmf_netdev_ops_p2p;
697
698 /* set the mac address */
699 memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
700
701 if (register_netdev(ndev) != 0) {
702 brcmf_err("couldn't register the p2p net device\n");
703 goto fail;
704 }
705
706 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
707
708 return 0;
709
710 fail:
711 ifp->drvr->iflist[ifp->bsscfgidx] = NULL;
712 ndev->netdev_ops = NULL;
713 return -EBADE;
714 }
715
brcmf_add_if(struct brcmf_pub * drvr,s32 bsscfgidx,s32 ifidx,bool is_p2pdev,const char * name,u8 * mac_addr)716 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,
717 bool is_p2pdev, const char *name, u8 *mac_addr)
718 {
719 struct brcmf_if *ifp;
720 struct net_device *ndev;
721
722 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx);
723
724 ifp = drvr->iflist[bsscfgidx];
725 /*
726 * Delete the existing interface before overwriting it
727 * in case we missed the BRCMF_E_IF_DEL event.
728 */
729 if (ifp) {
730 if (ifidx) {
731 brcmf_err("ERROR: netdev:%s already exists\n",
732 ifp->ndev->name);
733 netif_stop_queue(ifp->ndev);
734 brcmf_net_detach(ifp->ndev, false);
735 drvr->iflist[bsscfgidx] = NULL;
736 } else {
737 brcmf_dbg(INFO, "netdev:%s ignore IF event\n",
738 ifp->ndev->name);
739 return ERR_PTR(-EINVAL);
740 }
741 }
742
743 if (!drvr->settings->p2p_enable && is_p2pdev) {
744 /* this is P2P_DEVICE interface */
745 brcmf_dbg(INFO, "allocate non-netdev interface\n");
746 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
747 if (!ifp)
748 return ERR_PTR(-ENOMEM);
749 } else {
750 brcmf_dbg(INFO, "allocate netdev interface\n");
751 /* Allocate netdev, including space for private structure */
752 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name,
753 NET_NAME_UNKNOWN, ether_setup);
754 if (!ndev)
755 return ERR_PTR(-ENOMEM);
756
757 ndev->needs_free_netdev = true;
758 ifp = netdev_priv(ndev);
759 ifp->ndev = ndev;
760 /* store mapping ifidx to bsscfgidx */
761 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID)
762 drvr->if2bss[ifidx] = bsscfgidx;
763 }
764
765 ifp->drvr = drvr;
766 drvr->iflist[bsscfgidx] = ifp;
767 ifp->ifidx = ifidx;
768 ifp->bsscfgidx = bsscfgidx;
769
770 init_waitqueue_head(&ifp->pend_8021x_wait);
771 spin_lock_init(&ifp->netif_stop_lock);
772
773 if (mac_addr != NULL)
774 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
775
776 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
777 current->pid, name, ifp->mac_addr);
778
779 return ifp;
780 }
781
brcmf_del_if(struct brcmf_pub * drvr,s32 bsscfgidx,bool rtnl_locked)782 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx,
783 bool rtnl_locked)
784 {
785 struct brcmf_if *ifp;
786
787 ifp = drvr->iflist[bsscfgidx];
788 drvr->iflist[bsscfgidx] = NULL;
789 if (!ifp) {
790 brcmf_err("Null interface, bsscfgidx=%d\n", bsscfgidx);
791 return;
792 }
793 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx,
794 ifp->ifidx);
795 if (drvr->if2bss[ifp->ifidx] == bsscfgidx)
796 drvr->if2bss[ifp->ifidx] = BRCMF_BSSIDX_INVALID;
797 if (ifp->ndev) {
798 if (bsscfgidx == 0) {
799 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
800 rtnl_lock();
801 brcmf_netdev_stop(ifp->ndev);
802 rtnl_unlock();
803 }
804 } else {
805 netif_stop_queue(ifp->ndev);
806 }
807
808 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
809 cancel_work_sync(&ifp->multicast_work);
810 cancel_work_sync(&ifp->ndoffload_work);
811 }
812 brcmf_net_detach(ifp->ndev, rtnl_locked);
813 } else {
814 /* Only p2p device interfaces which get dynamically created
815 * end up here. In this case the p2p module should be informed
816 * about the removal of the interface within the firmware. If
817 * not then p2p commands towards the firmware will cause some
818 * serious troublesome side effects. The p2p module will clean
819 * up the ifp if needed.
820 */
821 brcmf_p2p_ifp_removed(ifp, rtnl_locked);
822 kfree(ifp);
823 }
824 }
825
brcmf_remove_interface(struct brcmf_if * ifp,bool rtnl_locked)826 void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked)
827 {
828 if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp))
829 return;
830 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx,
831 ifp->ifidx);
832 brcmf_proto_del_if(ifp->drvr, ifp);
833 brcmf_del_if(ifp->drvr, ifp->bsscfgidx, rtnl_locked);
834 }
835
brcmf_psm_watchdog_notify(struct brcmf_if * ifp,const struct brcmf_event_msg * evtmsg,void * data)836 static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp,
837 const struct brcmf_event_msg *evtmsg,
838 void *data)
839 {
840 int err;
841
842 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx);
843
844 brcmf_err("PSM's watchdog has fired!\n");
845
846 err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data,
847 evtmsg->datalen);
848 if (err)
849 brcmf_err("Failed to get memory dump, %d\n", err);
850
851 return err;
852 }
853
854 #ifdef CONFIG_INET
855 #define ARPOL_MAX_ENTRIES 8
brcmf_inetaddr_changed(struct notifier_block * nb,unsigned long action,void * data)856 static int brcmf_inetaddr_changed(struct notifier_block *nb,
857 unsigned long action, void *data)
858 {
859 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,
860 inetaddr_notifier);
861 struct in_ifaddr *ifa = data;
862 struct net_device *ndev = ifa->ifa_dev->dev;
863 struct brcmf_if *ifp;
864 int idx, i, ret;
865 u32 val;
866 __be32 addr_table[ARPOL_MAX_ENTRIES] = {0};
867
868 /* Find out if the notification is meant for us */
869 for (idx = 0; idx < BRCMF_MAX_IFS; idx++) {
870 ifp = drvr->iflist[idx];
871 if (ifp && ifp->ndev == ndev)
872 break;
873 if (idx == BRCMF_MAX_IFS - 1)
874 return NOTIFY_DONE;
875 }
876
877 /* check if arp offload is supported */
878 ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val);
879 if (ret)
880 return NOTIFY_OK;
881
882 /* old version only support primary index */
883 ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val);
884 if (ret)
885 val = 1;
886 if (val == 1)
887 ifp = drvr->iflist[0];
888
889 /* retrieve the table from firmware */
890 ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table,
891 sizeof(addr_table));
892 if (ret) {
893 brcmf_err("fail to get arp ip table err:%d\n", ret);
894 return NOTIFY_OK;
895 }
896
897 for (i = 0; i < ARPOL_MAX_ENTRIES; i++)
898 if (ifa->ifa_address == addr_table[i])
899 break;
900
901 switch (action) {
902 case NETDEV_UP:
903 if (i == ARPOL_MAX_ENTRIES) {
904 brcmf_dbg(TRACE, "add %pI4 to arp table\n",
905 &ifa->ifa_address);
906 /* set it directly */
907 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",
908 &ifa->ifa_address, sizeof(ifa->ifa_address));
909 if (ret)
910 brcmf_err("add arp ip err %d\n", ret);
911 }
912 break;
913 case NETDEV_DOWN:
914 if (i < ARPOL_MAX_ENTRIES) {
915 addr_table[i] = 0;
916 brcmf_dbg(TRACE, "remove %pI4 from arp table\n",
917 &ifa->ifa_address);
918 /* clear the table in firmware */
919 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear",
920 NULL, 0);
921 if (ret) {
922 brcmf_err("fail to clear arp ip table err:%d\n",
923 ret);
924 return NOTIFY_OK;
925 }
926 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) {
927 if (addr_table[i] == 0)
928 continue;
929 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",
930 &addr_table[i],
931 sizeof(addr_table[i]));
932 if (ret)
933 brcmf_err("add arp ip err %d\n",
934 ret);
935 }
936 }
937 break;
938 default:
939 break;
940 }
941
942 return NOTIFY_OK;
943 }
944 #endif
945
946 #if IS_ENABLED(CONFIG_IPV6)
brcmf_inet6addr_changed(struct notifier_block * nb,unsigned long action,void * data)947 static int brcmf_inet6addr_changed(struct notifier_block *nb,
948 unsigned long action, void *data)
949 {
950 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,
951 inet6addr_notifier);
952 struct inet6_ifaddr *ifa = data;
953 struct brcmf_if *ifp;
954 int i;
955 struct in6_addr *table;
956
957 /* Only handle primary interface */
958 ifp = drvr->iflist[0];
959 if (!ifp)
960 return NOTIFY_DONE;
961 if (ifp->ndev != ifa->idev->dev)
962 return NOTIFY_DONE;
963
964 table = ifp->ipv6_addr_tbl;
965 for (i = 0; i < NDOL_MAX_ENTRIES; i++)
966 if (ipv6_addr_equal(&ifa->addr, &table[i]))
967 break;
968
969 switch (action) {
970 case NETDEV_UP:
971 if (i == NDOL_MAX_ENTRIES) {
972 if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) {
973 table[ifp->ipv6addr_idx++] = ifa->addr;
974 } else {
975 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++)
976 table[i] = table[i + 1];
977 table[NDOL_MAX_ENTRIES - 1] = ifa->addr;
978 }
979 }
980 break;
981 case NETDEV_DOWN:
982 if (i < NDOL_MAX_ENTRIES) {
983 for (; i < ifp->ipv6addr_idx - 1; i++)
984 table[i] = table[i + 1];
985 memset(&table[i], 0, sizeof(table[i]));
986 ifp->ipv6addr_idx--;
987 }
988 break;
989 default:
990 break;
991 }
992
993 schedule_work(&ifp->ndoffload_work);
994
995 return NOTIFY_OK;
996 }
997 #endif
998
brcmf_revinfo_read(struct seq_file * s,void * data)999 static int brcmf_revinfo_read(struct seq_file *s, void *data)
1000 {
1001 struct brcmf_bus *bus_if = dev_get_drvdata(s->private);
1002 struct brcmf_rev_info *ri = &bus_if->drvr->revinfo;
1003 char drev[BRCMU_DOTREV_LEN];
1004 char brev[BRCMU_BOARDREV_LEN];
1005
1006 seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid);
1007 seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid);
1008 seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev));
1009 seq_printf(s, "chip: %s\n", ri->chipname);
1010 seq_printf(s, "chippkg: %u\n", ri->chippkg);
1011 seq_printf(s, "corerev: %u\n", ri->corerev);
1012 seq_printf(s, "boardid: 0x%04x\n", ri->boardid);
1013 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor);
1014 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev));
1015 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev));
1016 seq_printf(s, "ucoderev: %u\n", ri->ucoderev);
1017 seq_printf(s, "bus: %u\n", ri->bus);
1018 seq_printf(s, "phytype: %u\n", ri->phytype);
1019 seq_printf(s, "phyrev: %u\n", ri->phyrev);
1020 seq_printf(s, "anarev: %u\n", ri->anarev);
1021 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev);
1022
1023 seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver);
1024
1025 return 0;
1026 }
1027
brcmf_bus_started(struct brcmf_pub * drvr,struct cfg80211_ops * ops)1028 static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops)
1029 {
1030 int ret = -1;
1031 struct brcmf_bus *bus_if = drvr->bus_if;
1032 struct brcmf_if *ifp;
1033 struct brcmf_if *p2p_ifp;
1034
1035 brcmf_dbg(TRACE, "\n");
1036
1037 /* add primary networking interface */
1038 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL);
1039 if (IS_ERR(ifp))
1040 return PTR_ERR(ifp);
1041
1042 p2p_ifp = NULL;
1043
1044 /* signal bus ready */
1045 brcmf_bus_change_state(bus_if, BRCMF_BUS_UP);
1046
1047 /* do bus specific preinit here */
1048 ret = brcmf_bus_preinit(bus_if);
1049 if (ret < 0)
1050 goto fail;
1051
1052 /* Bus is ready, do any initialization */
1053 ret = brcmf_c_preinit_dcmds(ifp);
1054 if (ret < 0)
1055 goto fail;
1056
1057 brcmf_feat_attach(drvr);
1058
1059 ret = brcmf_proto_init_done(drvr);
1060 if (ret < 0)
1061 goto fail;
1062
1063 brcmf_proto_add_if(drvr, ifp);
1064
1065 drvr->config = brcmf_cfg80211_attach(drvr, ops,
1066 drvr->settings->p2p_enable);
1067 if (drvr->config == NULL) {
1068 ret = -ENOMEM;
1069 goto fail;
1070 }
1071
1072 ret = brcmf_net_attach(ifp, false);
1073
1074 if ((!ret) && (drvr->settings->p2p_enable)) {
1075 p2p_ifp = drvr->iflist[1];
1076 if (p2p_ifp)
1077 ret = brcmf_net_p2p_attach(p2p_ifp);
1078 }
1079
1080 if (ret)
1081 goto fail;
1082
1083 #ifdef CONFIG_INET
1084 drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed;
1085 ret = register_inetaddr_notifier(&drvr->inetaddr_notifier);
1086 if (ret)
1087 goto fail;
1088
1089 #if IS_ENABLED(CONFIG_IPV6)
1090 drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed;
1091 ret = register_inet6addr_notifier(&drvr->inet6addr_notifier);
1092 if (ret) {
1093 unregister_inetaddr_notifier(&drvr->inetaddr_notifier);
1094 goto fail;
1095 }
1096 #endif
1097 #endif /* CONFIG_INET */
1098
1099 /* populate debugfs */
1100 brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
1101 brcmf_feat_debugfs_create(drvr);
1102 brcmf_proto_debugfs_create(drvr);
1103
1104 return 0;
1105
1106 fail:
1107 brcmf_err("failed: %d\n", ret);
1108 if (drvr->config) {
1109 brcmf_cfg80211_detach(drvr->config);
1110 drvr->config = NULL;
1111 }
1112 brcmf_net_detach(ifp->ndev, false);
1113 if (p2p_ifp)
1114 brcmf_net_detach(p2p_ifp->ndev, false);
1115 drvr->iflist[0] = NULL;
1116 drvr->iflist[1] = NULL;
1117 if (drvr->settings->ignore_probe_fail)
1118 ret = 0;
1119
1120 return ret;
1121 }
1122
brcmf_attach(struct device * dev,struct brcmf_mp_device * settings)1123 int brcmf_attach(struct device *dev, struct brcmf_mp_device *settings)
1124 {
1125 struct wiphy *wiphy;
1126 struct cfg80211_ops *ops;
1127 struct brcmf_pub *drvr = NULL;
1128 int ret = 0;
1129 int i;
1130
1131 brcmf_dbg(TRACE, "Enter\n");
1132
1133 ops = brcmf_cfg80211_get_ops();
1134 if (!ops)
1135 return -ENOMEM;
1136
1137 wiphy = wiphy_new(ops, sizeof(*drvr));
1138 if (!wiphy)
1139 return -ENOMEM;
1140
1141 set_wiphy_dev(wiphy, dev);
1142 drvr = wiphy_priv(wiphy);
1143 drvr->wiphy = wiphy;
1144
1145 for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
1146 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
1147
1148 mutex_init(&drvr->proto_block);
1149
1150 /* Link to bus module */
1151 drvr->hdrlen = 0;
1152 drvr->bus_if = dev_get_drvdata(dev);
1153 drvr->bus_if->drvr = drvr;
1154 drvr->settings = settings;
1155
1156 /* Attach and link in the protocol */
1157 ret = brcmf_proto_attach(drvr);
1158 if (ret != 0) {
1159 brcmf_err("brcmf_prot_attach failed\n");
1160 goto fail;
1161 }
1162
1163 /* Attach to events important for core code */
1164 brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG,
1165 brcmf_psm_watchdog_notify);
1166
1167 /* attach firmware event handler */
1168 brcmf_fweh_attach(drvr);
1169
1170 ret = brcmf_bus_started(drvr, ops);
1171 if (ret != 0) {
1172 brcmf_err("dongle is not responding: err=%d\n", ret);
1173 goto fail;
1174 }
1175
1176 drvr->config->ops = ops;
1177 return 0;
1178
1179 fail:
1180 brcmf_detach(dev);
1181 kfree(ops);
1182
1183 return ret;
1184 }
1185
brcmf_bus_add_txhdrlen(struct device * dev,uint len)1186 void brcmf_bus_add_txhdrlen(struct device *dev, uint len)
1187 {
1188 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1189 struct brcmf_pub *drvr = bus_if->drvr;
1190
1191 if (drvr) {
1192 drvr->hdrlen += len;
1193 }
1194 }
1195
brcmf_dev_reset(struct device * dev)1196 void brcmf_dev_reset(struct device *dev)
1197 {
1198 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1199 struct brcmf_pub *drvr = bus_if->drvr;
1200
1201 if (drvr == NULL)
1202 return;
1203
1204 if (drvr->iflist[0])
1205 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
1206 }
1207
brcmf_dev_coredump(struct device * dev)1208 void brcmf_dev_coredump(struct device *dev)
1209 {
1210 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1211
1212 if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0)
1213 brcmf_dbg(TRACE, "failed to create coredump\n");
1214 }
1215
brcmf_detach(struct device * dev)1216 void brcmf_detach(struct device *dev)
1217 {
1218 s32 i;
1219 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1220 struct brcmf_pub *drvr = bus_if->drvr;
1221
1222 brcmf_dbg(TRACE, "Enter\n");
1223
1224 if (drvr == NULL)
1225 return;
1226
1227 #ifdef CONFIG_INET
1228 unregister_inetaddr_notifier(&drvr->inetaddr_notifier);
1229 #endif
1230
1231 #if IS_ENABLED(CONFIG_IPV6)
1232 unregister_inet6addr_notifier(&drvr->inet6addr_notifier);
1233 #endif
1234
1235 /* stop firmware event handling */
1236 brcmf_fweh_detach(drvr);
1237 if (drvr->config)
1238 brcmf_p2p_detach(&drvr->config->p2p);
1239
1240 brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
1241
1242 /* make sure primary interface removed last */
1243 for (i = BRCMF_MAX_IFS-1; i > -1; i--)
1244 brcmf_remove_interface(drvr->iflist[i], false);
1245
1246 brcmf_cfg80211_detach(drvr->config);
1247 drvr->config = NULL;
1248
1249 brcmf_bus_stop(drvr->bus_if);
1250
1251 brcmf_proto_detach(drvr);
1252
1253 bus_if->drvr = NULL;
1254 wiphy_free(drvr->wiphy);
1255 }
1256
brcmf_iovar_data_set(struct device * dev,char * name,void * data,u32 len)1257 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)
1258 {
1259 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1260 struct brcmf_if *ifp = bus_if->drvr->iflist[0];
1261
1262 return brcmf_fil_iovar_data_set(ifp, name, data, len);
1263 }
1264
brcmf_get_pend_8021x_cnt(struct brcmf_if * ifp)1265 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
1266 {
1267 return atomic_read(&ifp->pend_8021x_cnt);
1268 }
1269
brcmf_netdev_wait_pend8021x(struct brcmf_if * ifp)1270 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp)
1271 {
1272 int err;
1273
1274 err = wait_event_timeout(ifp->pend_8021x_wait,
1275 !brcmf_get_pend_8021x_cnt(ifp),
1276 MAX_WAIT_FOR_8021X_TX);
1277
1278 if (!err)
1279 brcmf_err("Timed out waiting for no pending 802.1x packets\n");
1280
1281 return !err;
1282 }
1283
brcmf_bus_change_state(struct brcmf_bus * bus,enum brcmf_bus_state state)1284 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state)
1285 {
1286 struct brcmf_pub *drvr = bus->drvr;
1287 struct net_device *ndev;
1288 int ifidx;
1289
1290 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state);
1291
1292 if (!drvr) {
1293 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n");
1294 return;
1295 }
1296
1297 bus->state = state;
1298
1299 if (state == BRCMF_BUS_UP) {
1300 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
1301 if ((drvr->iflist[ifidx]) &&
1302 (drvr->iflist[ifidx]->ndev)) {
1303 ndev = drvr->iflist[ifidx]->ndev;
1304 if (netif_queue_stopped(ndev))
1305 netif_wake_queue(ndev);
1306 }
1307 }
1308 }
1309 }
1310
brcmf_driver_register(struct work_struct * work)1311 static void brcmf_driver_register(struct work_struct *work)
1312 {
1313 #ifdef CONFIG_BRCMFMAC_SDIO
1314 brcmf_sdio_register();
1315 #endif
1316 #ifdef CONFIG_BRCMFMAC_USB
1317 brcmf_usb_register();
1318 #endif
1319 #ifdef CONFIG_BRCMFMAC_PCIE
1320 brcmf_pcie_register();
1321 #endif
1322 }
1323 static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register);
1324
brcmf_core_init(void)1325 int __init brcmf_core_init(void)
1326 {
1327 if (!schedule_work(&brcmf_driver_work))
1328 return -EBUSY;
1329
1330 return 0;
1331 }
1332
brcmf_core_exit(void)1333 void __exit brcmf_core_exit(void)
1334 {
1335 cancel_work_sync(&brcmf_driver_work);
1336
1337 #ifdef CONFIG_BRCMFMAC_SDIO
1338 brcmf_sdio_exit();
1339 #endif
1340 #ifdef CONFIG_BRCMFMAC_USB
1341 brcmf_usb_exit();
1342 #endif
1343 #ifdef CONFIG_BRCMFMAC_PCIE
1344 brcmf_pcie_exit();
1345 #endif
1346 }
1347
1348
