1 // SPDX-License-Identifier: ISC
2 /*
3 * Copyright (c) 2010 Broadcom Corporation
4 */
5
6 #include <linux/kernel.h>
7 #include <linux/etherdevice.h>
8 #include <linux/module.h>
9 #include <linux/inetdevice.h>
10 #include <linux/property.h>
11 #include <net/cfg80211.h>
12 #include <net/rtnetlink.h>
13 #include <net/addrconf.h>
14 #include <net/ieee80211_radiotap.h>
15 #include <net/ipv6.h>
16 #include <brcmu_utils.h>
17 #include <brcmu_wifi.h>
18
19 #include "core.h"
20 #include "bus.h"
21 #include "fwvid.h"
22 #include "debug.h"
23 #include "fwil_types.h"
24 #include "p2p.h"
25 #include "pno.h"
26 #include "cfg80211.h"
27 #include "fwil.h"
28 #include "feature.h"
29 #include "proto.h"
30 #include "pcie.h"
31 #include "common.h"
32
33 #define MAX_WAIT_FOR_8021X_TX msecs_to_jiffies(950)
34
35 #define BRCMF_BSSIDX_INVALID -1
36
37 #define RXS_PBPRES BIT(2)
38
39 #define D11_PHY_HDR_LEN 6
40
41 struct d11rxhdr_le {
42 __le16 RxFrameSize;
43 u16 PAD;
44 __le16 PhyRxStatus_0;
45 __le16 PhyRxStatus_1;
46 __le16 PhyRxStatus_2;
47 __le16 PhyRxStatus_3;
48 __le16 PhyRxStatus_4;
49 __le16 PhyRxStatus_5;
50 __le16 RxStatus1;
51 __le16 RxStatus2;
52 __le16 RxTSFTime;
53 __le16 RxChan;
54 u8 unknown[12];
55 } __packed;
56
57 struct wlc_d11rxhdr {
58 struct d11rxhdr_le rxhdr;
59 __le32 tsf_l;
60 s8 rssi;
61 s8 rxpwr0;
62 s8 rxpwr1;
63 s8 do_rssi_ma;
64 s8 rxpwr[4];
65 } __packed;
66
brcmf_ifname(struct brcmf_if * ifp)67 char *brcmf_ifname(struct brcmf_if *ifp)
68 {
69 if (!ifp)
70 return "<if_null>";
71
72 if (ifp->ndev)
73 return ifp->ndev->name;
74
75 return "<if_none>";
76 }
77
brcmf_get_ifp(struct brcmf_pub * drvr,int ifidx)78 struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx)
79 {
80 struct brcmf_if *ifp;
81 s32 bsscfgidx;
82
83 if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
84 bphy_err(drvr, "ifidx %d out of range\n", ifidx);
85 return NULL;
86 }
87
88 ifp = NULL;
89 bsscfgidx = drvr->if2bss[ifidx];
90 if (bsscfgidx >= 0)
91 ifp = drvr->iflist[bsscfgidx];
92
93 return ifp;
94 }
95
brcmf_configure_arp_nd_offload(struct brcmf_if * ifp,bool enable)96 void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable)
97 {
98 s32 err;
99 u32 mode;
100
101 if (enable)
102 mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY;
103 else
104 mode = 0;
105
106 /* Try to set and enable ARP offload feature, this may fail, then it */
107 /* is simply not supported and err 0 will be returned */
108 err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode);
109 if (err) {
110 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n",
111 mode, err);
112 } else {
113 err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable);
114 if (err) {
115 brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n",
116 enable, err);
117 } else {
118 brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n",
119 enable, mode);
120 }
121 }
122
123 err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable);
124 if (err) {
125 brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n",
126 enable, err);
127 } else {
128 brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n",
129 enable, mode);
130 }
131 }
132
_brcmf_set_multicast_list(struct work_struct * work)133 static void _brcmf_set_multicast_list(struct work_struct *work)
134 {
135 struct brcmf_if *ifp = container_of(work, struct brcmf_if,
136 multicast_work);
137 struct brcmf_pub *drvr = ifp->drvr;
138 struct net_device *ndev;
139 struct netdev_hw_addr *ha;
140 u32 cmd_value, cnt;
141 __le32 cnt_le;
142 char *buf, *bufp;
143 u32 buflen;
144 s32 err;
145
146 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
147
148 ndev = ifp->ndev;
149
150 /* Determine initial value of allmulti flag */
151 cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
152
153 /* Send down the multicast list first. */
154 cnt = netdev_mc_count(ndev);
155 buflen = sizeof(cnt) + (cnt * ETH_ALEN);
156 buf = kmalloc(buflen, GFP_KERNEL);
157 if (!buf)
158 return;
159 bufp = buf;
160
161 cnt_le = cpu_to_le32(cnt);
162 memcpy(bufp, &cnt_le, sizeof(cnt_le));
163 bufp += sizeof(cnt_le);
164
165 netdev_for_each_mc_addr(ha, ndev) {
166 if (!cnt)
167 break;
168 memcpy(bufp, ha->addr, ETH_ALEN);
169 bufp += ETH_ALEN;
170 cnt--;
171 }
172
173 err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
174 if (err < 0) {
175 bphy_err(drvr, "Setting mcast_list failed, %d\n", err);
176 cmd_value = cnt ? true : cmd_value;
177 }
178
179 kfree(buf);
180
181 /*
182 * Now send the allmulti setting. This is based on the setting in the
183 * net_device flags, but might be modified above to be turned on if we
184 * were trying to set some addresses and dongle rejected it...
185 */
186 err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
187 if (err < 0)
188 bphy_err(drvr, "Setting allmulti failed, %d\n", err);
189
190 /*Finally, pick up the PROMISC flag */
191 cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
192 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
193 if (err < 0) {
194 /* PROMISC unsupported by firmware of older chips */
195 if (err == -EBADE)
196 bphy_info_once(drvr, "BRCMF_C_SET_PROMISC unsupported\n");
197 else
198 bphy_err(drvr, "Setting BRCMF_C_SET_PROMISC failed, err=%d\n",
199 err);
200 }
201 brcmf_configure_arp_nd_offload(ifp, !cmd_value);
202 }
203
204 #if IS_ENABLED(CONFIG_IPV6)
_brcmf_update_ndtable(struct work_struct * work)205 static void _brcmf_update_ndtable(struct work_struct *work)
206 {
207 struct brcmf_if *ifp = container_of(work, struct brcmf_if,
208 ndoffload_work);
209 struct brcmf_pub *drvr = ifp->drvr;
210 int i, ret;
211
212 /* clear the table in firmware */
213 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip_clear", NULL, 0);
214 if (ret) {
215 brcmf_dbg(TRACE, "fail to clear nd ip table err:%d\n", ret);
216 return;
217 }
218
219 for (i = 0; i < ifp->ipv6addr_idx; i++) {
220 ret = brcmf_fil_iovar_data_set(ifp, "nd_hostip",
221 &ifp->ipv6_addr_tbl[i],
222 sizeof(struct in6_addr));
223 if (ret)
224 bphy_err(drvr, "add nd ip err %d\n", ret);
225 }
226 }
227 #else
_brcmf_update_ndtable(struct work_struct * work)228 static void _brcmf_update_ndtable(struct work_struct *work)
229 {
230 }
231 #endif
232
brcmf_netdev_set_mac_address(struct net_device * ndev,void * addr)233 static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
234 {
235 struct brcmf_if *ifp = netdev_priv(ndev);
236 struct sockaddr *sa = (struct sockaddr *)addr;
237 int err;
238
239 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
240
241 err = brcmf_c_set_cur_etheraddr(ifp, sa->sa_data);
242 if (err >= 0) {
243 brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data);
244 memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN);
245 eth_hw_addr_set(ifp->ndev, ifp->mac_addr);
246 }
247 return err;
248 }
249
brcmf_netdev_set_multicast_list(struct net_device * ndev)250 static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
251 {
252 struct brcmf_if *ifp = netdev_priv(ndev);
253
254 schedule_work(&ifp->multicast_work);
255 }
256
257 /**
258 * brcmf_skb_is_iapp - checks if skb is an IAPP packet
259 *
260 * @skb: skb to check
261 */
brcmf_skb_is_iapp(struct sk_buff * skb)262 static bool brcmf_skb_is_iapp(struct sk_buff *skb)
263 {
264 static const u8 iapp_l2_update_packet[6] __aligned(2) = {
265 0x00, 0x01, 0xaf, 0x81, 0x01, 0x00,
266 };
267 unsigned char *eth_data;
268 #if !defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
269 const u16 *a, *b;
270 #endif
271
272 if (skb->len - skb->mac_len != 6 ||
273 !is_multicast_ether_addr(eth_hdr(skb)->h_dest))
274 return false;
275
276 eth_data = skb_mac_header(skb) + ETH_HLEN;
277 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
278 return !(((*(const u32 *)eth_data) ^ (*(const u32 *)iapp_l2_update_packet)) |
279 ((*(const u16 *)(eth_data + 4)) ^ (*(const u16 *)(iapp_l2_update_packet + 4))));
280 #else
281 a = (const u16 *)eth_data;
282 b = (const u16 *)iapp_l2_update_packet;
283
284 return !((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2]));
285 #endif
286 }
287
brcmf_netdev_start_xmit(struct sk_buff * skb,struct net_device * ndev)288 static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
289 struct net_device *ndev)
290 {
291 int ret;
292 struct brcmf_if *ifp = netdev_priv(ndev);
293 struct brcmf_pub *drvr = ifp->drvr;
294 struct ethhdr *eh;
295 int head_delta;
296 unsigned int tx_bytes = skb->len;
297
298 brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
299
300 /* Can the device send data? */
301 if (drvr->bus_if->state != BRCMF_BUS_UP) {
302 bphy_err(drvr, "xmit rejected state=%d\n", drvr->bus_if->state);
303 netif_stop_queue(ndev);
304 dev_kfree_skb(skb);
305 ret = -ENODEV;
306 goto done;
307 }
308
309 /* Some recent Broadcom's firmwares disassociate STA when they receive
310 * an 802.11f ADD frame. This behavior can lead to a local DoS security
311 * issue. Attacker may trigger disassociation of any STA by sending a
312 * proper Ethernet frame to the wireless interface.
313 *
314 * Moreover this feature may break AP interfaces in some specific
315 * setups. This applies e.g. to the bridge with hairpin mode enabled and
316 * IFLA_BRPORT_MCAST_TO_UCAST set. IAPP packet generated by a firmware
317 * will get passed back to the wireless interface and cause immediate
318 * disassociation of a just-connected STA.
319 */
320 if (!drvr->settings->iapp && brcmf_skb_is_iapp(skb)) {
321 dev_kfree_skb(skb);
322 ret = -EINVAL;
323 goto done;
324 }
325
326 /* Make sure there's enough writeable headroom */
327 if (skb_headroom(skb) < drvr->hdrlen || skb_header_cloned(skb)) {
328 head_delta = max_t(int, drvr->hdrlen - skb_headroom(skb), 0);
329
330 brcmf_dbg(INFO, "%s: insufficient headroom (%d)\n",
331 brcmf_ifname(ifp), head_delta);
332 atomic_inc(&drvr->bus_if->stats.pktcowed);
333 ret = pskb_expand_head(skb, ALIGN(head_delta, NET_SKB_PAD), 0,
334 GFP_ATOMIC);
335 if (ret < 0) {
336 bphy_err(drvr, "%s: failed to expand headroom\n",
337 brcmf_ifname(ifp));
338 atomic_inc(&drvr->bus_if->stats.pktcow_failed);
339 dev_kfree_skb(skb);
340 goto done;
341 }
342 }
343
344 /* validate length for ether packet */
345 if (skb->len < sizeof(*eh)) {
346 ret = -EINVAL;
347 dev_kfree_skb(skb);
348 goto done;
349 }
350
351 eh = (struct ethhdr *)(skb->data);
352
353 if (eh->h_proto == htons(ETH_P_PAE))
354 atomic_inc(&ifp->pend_8021x_cnt);
355
356 /* determine the priority */
357 if ((skb->priority == 0) || (skb->priority > 7))
358 skb->priority = cfg80211_classify8021d(skb, NULL);
359
360 /* set pacing shift for packet aggregation */
361 sk_pacing_shift_update(skb->sk, 8);
362
363 ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb);
364 if (ret < 0)
365 brcmf_txfinalize(ifp, skb, false);
366
367 done:
368 if (ret) {
369 ndev->stats.tx_dropped++;
370 } else {
371 ndev->stats.tx_packets++;
372 ndev->stats.tx_bytes += tx_bytes;
373 }
374
375 /* Return ok: we always eat the packet */
376 return NETDEV_TX_OK;
377 }
378
brcmf_txflowblock_if(struct brcmf_if * ifp,enum brcmf_netif_stop_reason reason,bool state)379 void brcmf_txflowblock_if(struct brcmf_if *ifp,
380 enum brcmf_netif_stop_reason reason, bool state)
381 {
382 unsigned long flags;
383
384 if (!ifp || !ifp->ndev)
385 return;
386
387 brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n",
388 ifp->bsscfgidx, ifp->netif_stop, reason, state);
389
390 spin_lock_irqsave(&ifp->netif_stop_lock, flags);
391 if (state) {
392 if (!ifp->netif_stop)
393 netif_stop_queue(ifp->ndev);
394 ifp->netif_stop |= reason;
395 } else {
396 ifp->netif_stop &= ~reason;
397 if (!ifp->netif_stop)
398 netif_wake_queue(ifp->ndev);
399 }
400 spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
401 }
402
brcmf_netif_rx(struct brcmf_if * ifp,struct sk_buff * skb)403 void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
404 {
405 /* Most of Broadcom's firmwares send 802.11f ADD frame every time a new
406 * STA connects to the AP interface. This is an obsoleted standard most
407 * users don't use, so don't pass these frames up unless requested.
408 */
409 if (!ifp->drvr->settings->iapp && brcmf_skb_is_iapp(skb)) {
410 brcmu_pkt_buf_free_skb(skb);
411 return;
412 }
413
414 if (skb->pkt_type == PACKET_MULTICAST)
415 ifp->ndev->stats.multicast++;
416
417 if (!(ifp->ndev->flags & IFF_UP)) {
418 brcmu_pkt_buf_free_skb(skb);
419 return;
420 }
421
422 ifp->ndev->stats.rx_bytes += skb->len;
423 ifp->ndev->stats.rx_packets++;
424
425 brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
426 netif_rx(skb);
427 }
428
brcmf_netif_mon_rx(struct brcmf_if * ifp,struct sk_buff * skb)429 void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb)
430 {
431 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_RADIOTAP)) {
432 /* Do nothing */
433 } else if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR)) {
434 struct wlc_d11rxhdr *wlc_rxhdr = (struct wlc_d11rxhdr *)skb->data;
435 struct ieee80211_radiotap_header *radiotap;
436 unsigned int offset;
437 u16 RxStatus1;
438
439 RxStatus1 = le16_to_cpu(wlc_rxhdr->rxhdr.RxStatus1);
440
441 offset = sizeof(struct wlc_d11rxhdr);
442 /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU
443 * subframes
444 */
445 if (RxStatus1 & RXS_PBPRES)
446 offset += 2;
447 offset += D11_PHY_HDR_LEN;
448
449 skb_pull(skb, offset);
450
451 /* TODO: use RX header to fill some radiotap data */
452 radiotap = skb_push(skb, sizeof(*radiotap));
453 memset(radiotap, 0, sizeof(*radiotap));
454 radiotap->it_len = cpu_to_le16(sizeof(*radiotap));
455
456 /* TODO: 4 bytes with receive status? */
457 skb->len -= 4;
458 } else {
459 struct ieee80211_radiotap_header *radiotap;
460
461 /* TODO: use RX status to fill some radiotap data */
462 radiotap = skb_push(skb, sizeof(*radiotap));
463 memset(radiotap, 0, sizeof(*radiotap));
464 radiotap->it_len = cpu_to_le16(sizeof(*radiotap));
465
466 /* TODO: 4 bytes with receive status? */
467 skb->len -= 4;
468 }
469
470 skb->dev = ifp->ndev;
471 skb_reset_mac_header(skb);
472 skb->pkt_type = PACKET_OTHERHOST;
473 skb->protocol = htons(ETH_P_802_2);
474
475 brcmf_netif_rx(ifp, skb);
476 }
477
brcmf_rx_hdrpull(struct brcmf_pub * drvr,struct sk_buff * skb,struct brcmf_if ** ifp)478 static int brcmf_rx_hdrpull(struct brcmf_pub *drvr, struct sk_buff *skb,
479 struct brcmf_if **ifp)
480 {
481 int ret;
482
483 /* process and remove protocol-specific header */
484 ret = brcmf_proto_hdrpull(drvr, true, skb, ifp);
485
486 if (ret || !(*ifp) || !(*ifp)->ndev) {
487 if (ret != -ENODATA && *ifp && (*ifp)->ndev)
488 (*ifp)->ndev->stats.rx_errors++;
489 brcmu_pkt_buf_free_skb(skb);
490 return -ENODATA;
491 }
492
493 skb->protocol = eth_type_trans(skb, (*ifp)->ndev);
494 return 0;
495 }
496
brcmf_rx_frame(struct device * dev,struct sk_buff * skb,bool handle_event,bool inirq)497 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_event,
498 bool inirq)
499 {
500 struct brcmf_if *ifp;
501 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
502 struct brcmf_pub *drvr = bus_if->drvr;
503
504 brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
505
506 if (brcmf_rx_hdrpull(drvr, skb, &ifp))
507 return;
508
509 if (brcmf_proto_is_reorder_skb(skb)) {
510 brcmf_proto_rxreorder(ifp, skb);
511 } else {
512 /* Process special event packets */
513 if (handle_event) {
514 gfp_t gfp = inirq ? GFP_ATOMIC : GFP_KERNEL;
515
516 brcmf_fweh_process_skb(ifp->drvr, skb,
517 BCMILCP_SUBTYPE_VENDOR_LONG, gfp);
518 }
519 brcmf_netif_rx(ifp, skb);
520 }
521 }
522
brcmf_rx_event(struct device * dev,struct sk_buff * skb)523 void brcmf_rx_event(struct device *dev, struct sk_buff *skb)
524 {
525 struct brcmf_if *ifp;
526 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
527 struct brcmf_pub *drvr = bus_if->drvr;
528
529 brcmf_dbg(EVENT, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
530
531 if (brcmf_rx_hdrpull(drvr, skb, &ifp))
532 return;
533
534 brcmf_fweh_process_skb(ifp->drvr, skb, 0, GFP_KERNEL);
535 brcmu_pkt_buf_free_skb(skb);
536 }
537
brcmf_txfinalize(struct brcmf_if * ifp,struct sk_buff * txp,bool success)538 void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success)
539 {
540 struct ethhdr *eh;
541 u16 type;
542
543 if (!ifp) {
544 brcmu_pkt_buf_free_skb(txp);
545 return;
546 }
547
548 eh = (struct ethhdr *)(txp->data);
549 type = ntohs(eh->h_proto);
550
551 if (type == ETH_P_PAE) {
552 atomic_dec(&ifp->pend_8021x_cnt);
553 if (waitqueue_active(&ifp->pend_8021x_wait))
554 wake_up(&ifp->pend_8021x_wait);
555 }
556
557 if (!success)
558 ifp->ndev->stats.tx_errors++;
559
560 brcmu_pkt_buf_free_skb(txp);
561 }
562
brcmf_ethtool_get_drvinfo(struct net_device * ndev,struct ethtool_drvinfo * info)563 static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
564 struct ethtool_drvinfo *info)
565 {
566 struct brcmf_if *ifp = netdev_priv(ndev);
567 struct brcmf_pub *drvr = ifp->drvr;
568 char drev[BRCMU_DOTREV_LEN] = "n/a";
569
570 if (drvr->revinfo.result == 0)
571 brcmu_dotrev_str(drvr->revinfo.driverrev, drev);
572 strscpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
573 strscpy(info->version, drev, sizeof(info->version));
574 strscpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
575 strscpy(info->bus_info, dev_name(drvr->bus_if->dev),
576 sizeof(info->bus_info));
577 }
578
579 static const struct ethtool_ops brcmf_ethtool_ops = {
580 .get_drvinfo = brcmf_ethtool_get_drvinfo,
581 };
582
brcmf_netdev_stop(struct net_device * ndev)583 static int brcmf_netdev_stop(struct net_device *ndev)
584 {
585 struct brcmf_if *ifp = netdev_priv(ndev);
586
587 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
588
589 brcmf_cfg80211_down(ndev);
590
591 brcmf_net_setcarrier(ifp, false);
592
593 return 0;
594 }
595
brcmf_netdev_open(struct net_device * ndev)596 static int brcmf_netdev_open(struct net_device *ndev)
597 {
598 struct brcmf_if *ifp = netdev_priv(ndev);
599 struct brcmf_pub *drvr = ifp->drvr;
600 struct brcmf_bus *bus_if = drvr->bus_if;
601 u32 toe_ol;
602
603 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
604
605 /* If bus is not ready, can't continue */
606 if (bus_if->state != BRCMF_BUS_UP) {
607 bphy_err(drvr, "failed bus is not ready\n");
608 return -EAGAIN;
609 }
610
611 atomic_set(&ifp->pend_8021x_cnt, 0);
612
613 /* Get current TOE mode from dongle */
614 if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
615 && (toe_ol & TOE_TX_CSUM_OL) != 0)
616 ndev->features |= NETIF_F_IP_CSUM;
617 else
618 ndev->features &= ~NETIF_F_IP_CSUM;
619
620 if (brcmf_cfg80211_up(ndev)) {
621 bphy_err(drvr, "failed to bring up cfg80211\n");
622 return -EIO;
623 }
624
625 /* Clear, carrier, set when connected or AP mode. */
626 netif_carrier_off(ndev);
627 return 0;
628 }
629
630 static const struct net_device_ops brcmf_netdev_ops_pri = {
631 .ndo_open = brcmf_netdev_open,
632 .ndo_stop = brcmf_netdev_stop,
633 .ndo_start_xmit = brcmf_netdev_start_xmit,
634 .ndo_set_mac_address = brcmf_netdev_set_mac_address,
635 .ndo_set_rx_mode = brcmf_netdev_set_multicast_list
636 };
637
brcmf_net_attach(struct brcmf_if * ifp,bool locked)638 int brcmf_net_attach(struct brcmf_if *ifp, bool locked)
639 {
640 struct brcmf_pub *drvr = ifp->drvr;
641 struct net_device *ndev;
642 s32 err;
643
644 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,
645 ifp->mac_addr);
646 ndev = ifp->ndev;
647
648 /* set appropriate operations */
649 ndev->netdev_ops = &brcmf_netdev_ops_pri;
650
651 ndev->needed_headroom += drvr->hdrlen;
652 ndev->ethtool_ops = &brcmf_ethtool_ops;
653
654 /* set the mac address & netns */
655 eth_hw_addr_set(ndev, ifp->mac_addr);
656 dev_net_set(ndev, wiphy_net(cfg_to_wiphy(drvr->config)));
657
658 INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
659 INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable);
660
661 if (locked)
662 err = cfg80211_register_netdevice(ndev);
663 else
664 err = register_netdev(ndev);
665 if (err != 0) {
666 bphy_err(drvr, "couldn't register the net device\n");
667 goto fail;
668 }
669
670 netif_carrier_off(ndev);
671
672 ndev->priv_destructor = brcmf_cfg80211_free_netdev;
673 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
674 return 0;
675
676 fail:
677 drvr->iflist[ifp->bsscfgidx] = NULL;
678 ndev->netdev_ops = NULL;
679 return -EBADE;
680 }
681
brcmf_net_detach(struct net_device * ndev,bool locked)682 void brcmf_net_detach(struct net_device *ndev, bool locked)
683 {
684 if (ndev->reg_state == NETREG_REGISTERED) {
685 if (locked)
686 cfg80211_unregister_netdevice(ndev);
687 else
688 unregister_netdev(ndev);
689 } else {
690 brcmf_cfg80211_free_netdev(ndev);
691 free_netdev(ndev);
692 }
693 }
694
brcmf_net_mon_open(struct net_device * ndev)695 static int brcmf_net_mon_open(struct net_device *ndev)
696 {
697 struct brcmf_if *ifp = netdev_priv(ndev);
698 struct brcmf_pub *drvr = ifp->drvr;
699 u32 monitor;
700 int err;
701
702 brcmf_dbg(TRACE, "Enter\n");
703
704 err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_MONITOR, &monitor);
705 if (err) {
706 bphy_err(drvr, "BRCMF_C_GET_MONITOR error (%d)\n", err);
707 return err;
708 } else if (monitor) {
709 bphy_err(drvr, "Monitor mode is already enabled\n");
710 return -EEXIST;
711 }
712
713 monitor = 3;
714 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor);
715 if (err)
716 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err);
717
718 return err;
719 }
720
brcmf_net_mon_stop(struct net_device * ndev)721 static int brcmf_net_mon_stop(struct net_device *ndev)
722 {
723 struct brcmf_if *ifp = netdev_priv(ndev);
724 struct brcmf_pub *drvr = ifp->drvr;
725 u32 monitor;
726 int err;
727
728 brcmf_dbg(TRACE, "Enter\n");
729
730 monitor = 0;
731 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_MONITOR, monitor);
732 if (err)
733 bphy_err(drvr, "BRCMF_C_SET_MONITOR error (%d)\n", err);
734
735 return err;
736 }
737
brcmf_net_mon_start_xmit(struct sk_buff * skb,struct net_device * ndev)738 static netdev_tx_t brcmf_net_mon_start_xmit(struct sk_buff *skb,
739 struct net_device *ndev)
740 {
741 dev_kfree_skb_any(skb);
742
743 return NETDEV_TX_OK;
744 }
745
746 static const struct net_device_ops brcmf_netdev_ops_mon = {
747 .ndo_open = brcmf_net_mon_open,
748 .ndo_stop = brcmf_net_mon_stop,
749 .ndo_start_xmit = brcmf_net_mon_start_xmit,
750 };
751
brcmf_net_mon_attach(struct brcmf_if * ifp)752 int brcmf_net_mon_attach(struct brcmf_if *ifp)
753 {
754 struct brcmf_pub *drvr = ifp->drvr;
755 struct net_device *ndev;
756 int err;
757
758 brcmf_dbg(TRACE, "Enter\n");
759
760 ndev = ifp->ndev;
761 ndev->netdev_ops = &brcmf_netdev_ops_mon;
762
763 err = cfg80211_register_netdevice(ndev);
764 if (err)
765 bphy_err(drvr, "Failed to register %s device\n", ndev->name);
766
767 return err;
768 }
769
brcmf_net_setcarrier(struct brcmf_if * ifp,bool on)770 void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on)
771 {
772 struct net_device *ndev;
773
774 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx,
775 on);
776
777 ndev = ifp->ndev;
778 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on);
779 if (on) {
780 if (!netif_carrier_ok(ndev))
781 netif_carrier_on(ndev);
782
783 } else {
784 if (netif_carrier_ok(ndev))
785 netif_carrier_off(ndev);
786 }
787 }
788
brcmf_net_p2p_open(struct net_device * ndev)789 static int brcmf_net_p2p_open(struct net_device *ndev)
790 {
791 brcmf_dbg(TRACE, "Enter\n");
792
793 return brcmf_cfg80211_up(ndev);
794 }
795
brcmf_net_p2p_stop(struct net_device * ndev)796 static int brcmf_net_p2p_stop(struct net_device *ndev)
797 {
798 brcmf_dbg(TRACE, "Enter\n");
799
800 return brcmf_cfg80211_down(ndev);
801 }
802
brcmf_net_p2p_start_xmit(struct sk_buff * skb,struct net_device * ndev)803 static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
804 struct net_device *ndev)
805 {
806 if (skb)
807 dev_kfree_skb_any(skb);
808
809 return NETDEV_TX_OK;
810 }
811
812 static const struct net_device_ops brcmf_netdev_ops_p2p = {
813 .ndo_open = brcmf_net_p2p_open,
814 .ndo_stop = brcmf_net_p2p_stop,
815 .ndo_start_xmit = brcmf_net_p2p_start_xmit
816 };
817
brcmf_net_p2p_attach(struct brcmf_if * ifp)818 static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
819 {
820 struct brcmf_pub *drvr = ifp->drvr;
821 struct net_device *ndev;
822
823 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx,
824 ifp->mac_addr);
825 ndev = ifp->ndev;
826
827 ndev->netdev_ops = &brcmf_netdev_ops_p2p;
828
829 /* set the mac address */
830 eth_hw_addr_set(ndev, ifp->mac_addr);
831
832 if (register_netdev(ndev) != 0) {
833 bphy_err(drvr, "couldn't register the p2p net device\n");
834 goto fail;
835 }
836
837 brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
838
839 return 0;
840
841 fail:
842 ifp->drvr->iflist[ifp->bsscfgidx] = NULL;
843 ndev->netdev_ops = NULL;
844 return -EBADE;
845 }
846
brcmf_add_if(struct brcmf_pub * drvr,s32 bsscfgidx,s32 ifidx,bool is_p2pdev,const char * name,u8 * mac_addr)847 struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,
848 bool is_p2pdev, const char *name, u8 *mac_addr)
849 {
850 struct brcmf_if *ifp;
851 struct net_device *ndev;
852
853 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx);
854
855 ifp = drvr->iflist[bsscfgidx];
856 /*
857 * Delete the existing interface before overwriting it
858 * in case we missed the BRCMF_E_IF_DEL event.
859 */
860 if (ifp) {
861 if (ifidx) {
862 bphy_err(drvr, "ERROR: netdev:%s already exists\n",
863 ifp->ndev->name);
864 netif_stop_queue(ifp->ndev);
865 brcmf_net_detach(ifp->ndev, false);
866 drvr->iflist[bsscfgidx] = NULL;
867 } else {
868 brcmf_dbg(INFO, "netdev:%s ignore IF event\n",
869 ifp->ndev->name);
870 return ERR_PTR(-EINVAL);
871 }
872 }
873
874 if (!drvr->settings->p2p_enable && is_p2pdev) {
875 /* this is P2P_DEVICE interface */
876 brcmf_dbg(INFO, "allocate non-netdev interface\n");
877 ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
878 if (!ifp)
879 return ERR_PTR(-ENOMEM);
880 } else {
881 brcmf_dbg(INFO, "allocate netdev interface\n");
882 /* Allocate netdev, including space for private structure */
883 ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name,
884 NET_NAME_UNKNOWN, ether_setup);
885 if (!ndev)
886 return ERR_PTR(-ENOMEM);
887
888 ndev->needs_free_netdev = true;
889 ifp = netdev_priv(ndev);
890 ifp->ndev = ndev;
891 /* store mapping ifidx to bsscfgidx */
892 if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID)
893 drvr->if2bss[ifidx] = bsscfgidx;
894 }
895
896 ifp->drvr = drvr;
897 drvr->iflist[bsscfgidx] = ifp;
898 ifp->ifidx = ifidx;
899 ifp->bsscfgidx = bsscfgidx;
900
901 init_waitqueue_head(&ifp->pend_8021x_wait);
902 spin_lock_init(&ifp->netif_stop_lock);
903
904 if (mac_addr != NULL)
905 memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
906
907 brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
908 current->pid, name, ifp->mac_addr);
909
910 return ifp;
911 }
912
brcmf_del_if(struct brcmf_pub * drvr,s32 bsscfgidx,bool locked)913 static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx,
914 bool locked)
915 {
916 struct brcmf_if *ifp;
917 int ifidx;
918
919 ifp = drvr->iflist[bsscfgidx];
920 if (!ifp) {
921 bphy_err(drvr, "Null interface, bsscfgidx=%d\n", bsscfgidx);
922 return;
923 }
924 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx,
925 ifp->ifidx);
926 ifidx = ifp->ifidx;
927
928 if (ifp->ndev) {
929 if (bsscfgidx == 0) {
930 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
931 rtnl_lock();
932 brcmf_netdev_stop(ifp->ndev);
933 rtnl_unlock();
934 }
935 } else {
936 netif_stop_queue(ifp->ndev);
937 }
938
939 if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
940 cancel_work_sync(&ifp->multicast_work);
941 cancel_work_sync(&ifp->ndoffload_work);
942 }
943 brcmf_net_detach(ifp->ndev, locked);
944 } else {
945 /* Only p2p device interfaces which get dynamically created
946 * end up here. In this case the p2p module should be informed
947 * about the removal of the interface within the firmware. If
948 * not then p2p commands towards the firmware will cause some
949 * serious troublesome side effects. The p2p module will clean
950 * up the ifp if needed.
951 */
952 brcmf_p2p_ifp_removed(ifp, locked);
953 kfree(ifp);
954 }
955
956 drvr->iflist[bsscfgidx] = NULL;
957 if (drvr->if2bss[ifidx] == bsscfgidx)
958 drvr->if2bss[ifidx] = BRCMF_BSSIDX_INVALID;
959 }
960
brcmf_remove_interface(struct brcmf_if * ifp,bool locked)961 void brcmf_remove_interface(struct brcmf_if *ifp, bool locked)
962 {
963 if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp))
964 return;
965 brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx,
966 ifp->ifidx);
967 brcmf_proto_del_if(ifp->drvr, ifp);
968 brcmf_del_if(ifp->drvr, ifp->bsscfgidx, locked);
969 }
970
brcmf_psm_watchdog_notify(struct brcmf_if * ifp,const struct brcmf_event_msg * evtmsg,void * data)971 static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp,
972 const struct brcmf_event_msg *evtmsg,
973 void *data)
974 {
975 struct brcmf_pub *drvr = ifp->drvr;
976 int err;
977
978 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx);
979
980 bphy_err(drvr, "PSM's watchdog has fired!\n");
981
982 err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data,
983 evtmsg->datalen);
984 if (err)
985 bphy_err(drvr, "Failed to get memory dump, %d\n", err);
986
987 return err;
988 }
989
990 #ifdef CONFIG_INET
991 #define ARPOL_MAX_ENTRIES 8
brcmf_inetaddr_changed(struct notifier_block * nb,unsigned long action,void * data)992 static int brcmf_inetaddr_changed(struct notifier_block *nb,
993 unsigned long action, void *data)
994 {
995 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,
996 inetaddr_notifier);
997 struct in_ifaddr *ifa = data;
998 struct net_device *ndev = ifa->ifa_dev->dev;
999 struct brcmf_if *ifp;
1000 int idx, i, ret;
1001 u32 val;
1002 __be32 addr_table[ARPOL_MAX_ENTRIES] = {0};
1003
1004 /* Find out if the notification is meant for us */
1005 for (idx = 0; idx < BRCMF_MAX_IFS; idx++) {
1006 ifp = drvr->iflist[idx];
1007 if (ifp && ifp->ndev == ndev)
1008 break;
1009 if (idx == BRCMF_MAX_IFS - 1)
1010 return NOTIFY_DONE;
1011 }
1012
1013 /* check if arp offload is supported */
1014 ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val);
1015 if (ret)
1016 return NOTIFY_OK;
1017
1018 /* old version only support primary index */
1019 ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val);
1020 if (ret)
1021 val = 1;
1022 if (val == 1)
1023 ifp = drvr->iflist[0];
1024
1025 /* retrieve the table from firmware */
1026 ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table,
1027 sizeof(addr_table));
1028 if (ret) {
1029 bphy_err(drvr, "fail to get arp ip table err:%d\n", ret);
1030 return NOTIFY_OK;
1031 }
1032
1033 for (i = 0; i < ARPOL_MAX_ENTRIES; i++)
1034 if (ifa->ifa_address == addr_table[i])
1035 break;
1036
1037 switch (action) {
1038 case NETDEV_UP:
1039 if (i == ARPOL_MAX_ENTRIES) {
1040 brcmf_dbg(TRACE, "add %pI4 to arp table\n",
1041 &ifa->ifa_address);
1042 /* set it directly */
1043 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",
1044 &ifa->ifa_address, sizeof(ifa->ifa_address));
1045 if (ret)
1046 bphy_err(drvr, "add arp ip err %d\n", ret);
1047 }
1048 break;
1049 case NETDEV_DOWN:
1050 if (i < ARPOL_MAX_ENTRIES) {
1051 addr_table[i] = 0;
1052 brcmf_dbg(TRACE, "remove %pI4 from arp table\n",
1053 &ifa->ifa_address);
1054 /* clear the table in firmware */
1055 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear",
1056 NULL, 0);
1057 if (ret) {
1058 bphy_err(drvr, "fail to clear arp ip table err:%d\n",
1059 ret);
1060 return NOTIFY_OK;
1061 }
1062 for (i = 0; i < ARPOL_MAX_ENTRIES; i++) {
1063 if (addr_table[i] == 0)
1064 continue;
1065 ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip",
1066 &addr_table[i],
1067 sizeof(addr_table[i]));
1068 if (ret)
1069 bphy_err(drvr, "add arp ip err %d\n",
1070 ret);
1071 }
1072 }
1073 break;
1074 default:
1075 break;
1076 }
1077
1078 return NOTIFY_OK;
1079 }
1080 #endif
1081
1082 #if IS_ENABLED(CONFIG_IPV6)
brcmf_inet6addr_changed(struct notifier_block * nb,unsigned long action,void * data)1083 static int brcmf_inet6addr_changed(struct notifier_block *nb,
1084 unsigned long action, void *data)
1085 {
1086 struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub,
1087 inet6addr_notifier);
1088 struct inet6_ifaddr *ifa = data;
1089 struct brcmf_if *ifp;
1090 int i;
1091 struct in6_addr *table;
1092
1093 /* Only handle primary interface */
1094 ifp = drvr->iflist[0];
1095 if (!ifp)
1096 return NOTIFY_DONE;
1097 if (ifp->ndev != ifa->idev->dev)
1098 return NOTIFY_DONE;
1099
1100 table = ifp->ipv6_addr_tbl;
1101 for (i = 0; i < NDOL_MAX_ENTRIES; i++)
1102 if (ipv6_addr_equal(&ifa->addr, &table[i]))
1103 break;
1104
1105 switch (action) {
1106 case NETDEV_UP:
1107 if (i == NDOL_MAX_ENTRIES) {
1108 if (ifp->ipv6addr_idx < NDOL_MAX_ENTRIES) {
1109 table[ifp->ipv6addr_idx++] = ifa->addr;
1110 } else {
1111 for (i = 0; i < NDOL_MAX_ENTRIES - 1; i++)
1112 table[i] = table[i + 1];
1113 table[NDOL_MAX_ENTRIES - 1] = ifa->addr;
1114 }
1115 }
1116 break;
1117 case NETDEV_DOWN:
1118 if (i < NDOL_MAX_ENTRIES) {
1119 for (; i < ifp->ipv6addr_idx - 1; i++)
1120 table[i] = table[i + 1];
1121 memset(&table[i], 0, sizeof(table[i]));
1122 ifp->ipv6addr_idx--;
1123 }
1124 break;
1125 default:
1126 break;
1127 }
1128
1129 schedule_work(&ifp->ndoffload_work);
1130
1131 return NOTIFY_OK;
1132 }
1133 #endif
1134
brcmf_revinfo_read(struct seq_file * s,void * data)1135 static int brcmf_revinfo_read(struct seq_file *s, void *data)
1136 {
1137 struct brcmf_bus *bus_if = dev_get_drvdata(s->private);
1138 struct brcmf_rev_info *ri = &bus_if->drvr->revinfo;
1139 char drev[BRCMU_DOTREV_LEN];
1140 char brev[BRCMU_BOARDREV_LEN];
1141
1142 seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid);
1143 seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid);
1144 seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev));
1145 seq_printf(s, "chip: %s (%s)\n", ri->chipname,
1146 brcmf_fwvid_vendor_name(bus_if->drvr));
1147 seq_printf(s, "chippkg: %u\n", ri->chippkg);
1148 seq_printf(s, "corerev: %u\n", ri->corerev);
1149 seq_printf(s, "boardid: 0x%04x\n", ri->boardid);
1150 seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor);
1151 seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev));
1152 seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev));
1153 seq_printf(s, "ucoderev: %u\n", ri->ucoderev);
1154 seq_printf(s, "bus: %u\n", ri->bus);
1155 seq_printf(s, "phytype: %u\n", ri->phytype);
1156 seq_printf(s, "phyrev: %u\n", ri->phyrev);
1157 seq_printf(s, "anarev: %u\n", ri->anarev);
1158 seq_printf(s, "nvramrev: %08x\n", ri->nvramrev);
1159
1160 seq_printf(s, "clmver: %s\n", bus_if->drvr->clmver);
1161
1162 return 0;
1163 }
1164
brcmf_core_bus_reset(struct work_struct * work)1165 static void brcmf_core_bus_reset(struct work_struct *work)
1166 {
1167 struct brcmf_pub *drvr = container_of(work, struct brcmf_pub,
1168 bus_reset);
1169
1170 brcmf_bus_reset(drvr->bus_if);
1171 }
1172
bus_reset_write(struct file * file,const char __user * user_buf,size_t count,loff_t * ppos)1173 static ssize_t bus_reset_write(struct file *file, const char __user *user_buf,
1174 size_t count, loff_t *ppos)
1175 {
1176 struct brcmf_pub *drvr = file->private_data;
1177 u8 value;
1178
1179 if (kstrtou8_from_user(user_buf, count, 0, &value))
1180 return -EINVAL;
1181
1182 if (value != 1)
1183 return -EINVAL;
1184
1185 schedule_work(&drvr->bus_reset);
1186
1187 return count;
1188 }
1189
1190 static const struct file_operations bus_reset_fops = {
1191 .open = simple_open,
1192 .llseek = no_llseek,
1193 .write = bus_reset_write,
1194 };
1195
brcmf_bus_started(struct brcmf_pub * drvr,struct cfg80211_ops * ops)1196 static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops)
1197 {
1198 int ret = -1;
1199 struct brcmf_bus *bus_if = drvr->bus_if;
1200 struct brcmf_if *ifp;
1201 struct brcmf_if *p2p_ifp;
1202
1203 brcmf_dbg(TRACE, "\n");
1204
1205 /* add primary networking interface */
1206 ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d",
1207 is_valid_ether_addr(drvr->settings->mac) ? drvr->settings->mac : NULL);
1208 if (IS_ERR(ifp))
1209 return PTR_ERR(ifp);
1210
1211 p2p_ifp = NULL;
1212
1213 /* signal bus ready */
1214 brcmf_bus_change_state(bus_if, BRCMF_BUS_UP);
1215
1216 /* do bus specific preinit here */
1217 ret = brcmf_bus_preinit(bus_if);
1218 if (ret < 0)
1219 goto fail;
1220
1221 /* Bus is ready, do any initialization */
1222 ret = brcmf_c_preinit_dcmds(ifp);
1223 if (ret < 0)
1224 goto fail;
1225
1226 brcmf_feat_attach(drvr);
1227
1228 ret = brcmf_proto_init_done(drvr);
1229 if (ret < 0)
1230 goto fail;
1231
1232 brcmf_proto_add_if(drvr, ifp);
1233
1234 drvr->config = brcmf_cfg80211_attach(drvr, ops,
1235 drvr->settings->p2p_enable);
1236 if (drvr->config == NULL) {
1237 ret = -ENOMEM;
1238 goto fail;
1239 }
1240
1241 ret = brcmf_net_attach(ifp, false);
1242
1243 if ((!ret) && (drvr->settings->p2p_enable)) {
1244 p2p_ifp = drvr->iflist[1];
1245 if (p2p_ifp)
1246 ret = brcmf_net_p2p_attach(p2p_ifp);
1247 }
1248
1249 if (ret)
1250 goto fail;
1251
1252 #ifdef CONFIG_INET
1253 drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed;
1254 ret = register_inetaddr_notifier(&drvr->inetaddr_notifier);
1255 if (ret)
1256 goto fail;
1257
1258 #if IS_ENABLED(CONFIG_IPV6)
1259 drvr->inet6addr_notifier.notifier_call = brcmf_inet6addr_changed;
1260 ret = register_inet6addr_notifier(&drvr->inet6addr_notifier);
1261 if (ret) {
1262 unregister_inetaddr_notifier(&drvr->inetaddr_notifier);
1263 goto fail;
1264 }
1265 #endif
1266 #endif /* CONFIG_INET */
1267
1268 INIT_WORK(&drvr->bus_reset, brcmf_core_bus_reset);
1269
1270 /* populate debugfs */
1271 brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
1272 debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr,
1273 &bus_reset_fops);
1274 brcmf_feat_debugfs_create(drvr);
1275 brcmf_proto_debugfs_create(drvr);
1276 brcmf_bus_debugfs_create(bus_if);
1277
1278 return 0;
1279
1280 fail:
1281 bphy_err(drvr, "failed: %d\n", ret);
1282 if (drvr->config) {
1283 brcmf_cfg80211_detach(drvr->config);
1284 drvr->config = NULL;
1285 }
1286 brcmf_net_detach(ifp->ndev, false);
1287 if (p2p_ifp)
1288 brcmf_net_detach(p2p_ifp->ndev, false);
1289 drvr->iflist[0] = NULL;
1290 drvr->iflist[1] = NULL;
1291 if (drvr->settings->ignore_probe_fail)
1292 ret = 0;
1293
1294 return ret;
1295 }
1296
brcmf_alloc(struct device * dev,struct brcmf_mp_device * settings)1297 int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings)
1298 {
1299 struct wiphy *wiphy;
1300 struct cfg80211_ops *ops;
1301 struct brcmf_pub *drvr = NULL;
1302
1303 brcmf_dbg(TRACE, "Enter\n");
1304
1305 ops = brcmf_cfg80211_get_ops(settings);
1306 if (!ops)
1307 return -ENOMEM;
1308
1309 wiphy = wiphy_new(ops, sizeof(*drvr));
1310 if (!wiphy) {
1311 kfree(ops);
1312 return -ENOMEM;
1313 }
1314
1315 set_wiphy_dev(wiphy, dev);
1316 drvr = wiphy_priv(wiphy);
1317 drvr->wiphy = wiphy;
1318 drvr->ops = ops;
1319 drvr->bus_if = dev_get_drvdata(dev);
1320 drvr->bus_if->drvr = drvr;
1321 drvr->settings = settings;
1322
1323 return 0;
1324 }
1325
brcmf_attach(struct device * dev)1326 int brcmf_attach(struct device *dev)
1327 {
1328 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1329 struct brcmf_pub *drvr = bus_if->drvr;
1330 int ret = 0;
1331 int i;
1332
1333 brcmf_dbg(TRACE, "Enter\n");
1334
1335 for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++)
1336 drvr->if2bss[i] = BRCMF_BSSIDX_INVALID;
1337
1338 mutex_init(&drvr->proto_block);
1339
1340 /* Link to bus module */
1341 drvr->hdrlen = 0;
1342
1343 ret = brcmf_fwvid_attach(drvr);
1344 if (ret != 0) {
1345 bphy_err(drvr, "brcmf_fwvid_attach failed\n");
1346 goto fail;
1347 }
1348
1349 /* Attach and link in the protocol */
1350 ret = brcmf_proto_attach(drvr);
1351 if (ret != 0) {
1352 bphy_err(drvr, "brcmf_prot_attach failed\n");
1353 goto fail;
1354 }
1355
1356 /* Attach to events important for core code */
1357 brcmf_fweh_register(drvr, BRCMF_E_PSM_WATCHDOG,
1358 brcmf_psm_watchdog_notify);
1359
1360 /* attach firmware event handler */
1361 brcmf_fweh_attach(drvr);
1362
1363 ret = brcmf_bus_started(drvr, drvr->ops);
1364 if (ret != 0) {
1365 bphy_err(drvr, "dongle is not responding: err=%d\n", ret);
1366 goto fail;
1367 }
1368
1369 return 0;
1370
1371 fail:
1372 brcmf_detach(dev);
1373
1374 return ret;
1375 }
1376
brcmf_bus_add_txhdrlen(struct device * dev,uint len)1377 void brcmf_bus_add_txhdrlen(struct device *dev, uint len)
1378 {
1379 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1380 struct brcmf_pub *drvr = bus_if->drvr;
1381
1382 if (drvr) {
1383 drvr->hdrlen += len;
1384 }
1385 }
1386
brcmf_dev_reset(struct device * dev)1387 void brcmf_dev_reset(struct device *dev)
1388 {
1389 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1390 struct brcmf_pub *drvr = bus_if->drvr;
1391
1392 if (drvr == NULL)
1393 return;
1394
1395 if (drvr->iflist[0])
1396 brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
1397 }
1398
brcmf_dev_coredump(struct device * dev)1399 void brcmf_dev_coredump(struct device *dev)
1400 {
1401 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1402
1403 if (brcmf_debug_create_memdump(bus_if, NULL, 0) < 0)
1404 brcmf_dbg(TRACE, "failed to create coredump\n");
1405 }
1406
brcmf_fw_crashed(struct device * dev)1407 void brcmf_fw_crashed(struct device *dev)
1408 {
1409 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1410 struct brcmf_pub *drvr = bus_if->drvr;
1411
1412 bphy_err(drvr, "Firmware has halted or crashed\n");
1413
1414 brcmf_dev_coredump(dev);
1415
1416 if (drvr->bus_reset.func)
1417 schedule_work(&drvr->bus_reset);
1418 }
1419
brcmf_detach(struct device * dev)1420 void brcmf_detach(struct device *dev)
1421 {
1422 s32 i;
1423 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1424 struct brcmf_pub *drvr = bus_if->drvr;
1425
1426 brcmf_dbg(TRACE, "Enter\n");
1427
1428 if (drvr == NULL)
1429 return;
1430
1431 #ifdef CONFIG_INET
1432 unregister_inetaddr_notifier(&drvr->inetaddr_notifier);
1433 #endif
1434
1435 #if IS_ENABLED(CONFIG_IPV6)
1436 unregister_inet6addr_notifier(&drvr->inet6addr_notifier);
1437 #endif
1438
1439 brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
1440 /* make sure primary interface removed last */
1441 for (i = BRCMF_MAX_IFS - 1; i > -1; i--) {
1442 if (drvr->iflist[i])
1443 brcmf_remove_interface(drvr->iflist[i], false);
1444 }
1445 brcmf_bus_stop(drvr->bus_if);
1446
1447 brcmf_fweh_detach(drvr);
1448 brcmf_proto_detach(drvr);
1449
1450 if (drvr->mon_if) {
1451 brcmf_net_detach(drvr->mon_if->ndev, false);
1452 drvr->mon_if = NULL;
1453 }
1454
1455 if (drvr->config) {
1456 brcmf_p2p_detach(&drvr->config->p2p);
1457 brcmf_cfg80211_detach(drvr->config);
1458 drvr->config = NULL;
1459 }
1460
1461 brcmf_fwvid_detach(drvr);
1462 }
1463
brcmf_free(struct device * dev)1464 void brcmf_free(struct device *dev)
1465 {
1466 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1467 struct brcmf_pub *drvr = bus_if->drvr;
1468
1469 if (!drvr)
1470 return;
1471
1472 bus_if->drvr = NULL;
1473
1474 kfree(drvr->ops);
1475
1476 wiphy_free(drvr->wiphy);
1477 }
1478
brcmf_iovar_data_set(struct device * dev,char * name,void * data,u32 len)1479 s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)
1480 {
1481 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1482 struct brcmf_if *ifp = bus_if->drvr->iflist[0];
1483
1484 return brcmf_fil_iovar_data_set(ifp, name, data, len);
1485 }
1486
brcmf_get_pend_8021x_cnt(struct brcmf_if * ifp)1487 static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
1488 {
1489 return atomic_read(&ifp->pend_8021x_cnt);
1490 }
1491
brcmf_netdev_wait_pend8021x(struct brcmf_if * ifp)1492 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp)
1493 {
1494 struct brcmf_pub *drvr = ifp->drvr;
1495 int err;
1496
1497 err = wait_event_timeout(ifp->pend_8021x_wait,
1498 !brcmf_get_pend_8021x_cnt(ifp),
1499 MAX_WAIT_FOR_8021X_TX);
1500
1501 if (!err) {
1502 bphy_err(drvr, "Timed out waiting for no pending 802.1x packets\n");
1503 atomic_set(&ifp->pend_8021x_cnt, 0);
1504 }
1505
1506 return !err;
1507 }
1508
brcmf_bus_change_state(struct brcmf_bus * bus,enum brcmf_bus_state state)1509 void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state)
1510 {
1511 struct brcmf_pub *drvr = bus->drvr;
1512 struct net_device *ndev;
1513 int ifidx;
1514
1515 brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state);
1516
1517 if (!drvr) {
1518 brcmf_dbg(INFO, "ignoring transition, bus not attached yet\n");
1519 return;
1520 }
1521
1522 bus->state = state;
1523
1524 if (state == BRCMF_BUS_UP) {
1525 for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) {
1526 if ((drvr->iflist[ifidx]) &&
1527 (drvr->iflist[ifidx]->ndev)) {
1528 ndev = drvr->iflist[ifidx]->ndev;
1529 if (netif_queue_stopped(ndev))
1530 netif_wake_queue(ndev);
1531 }
1532 }
1533 }
1534 }
1535
brcmf_core_init(void)1536 int __init brcmf_core_init(void)
1537 {
1538 int err;
1539
1540 err = brcmf_sdio_register();
1541 if (err)
1542 return err;
1543
1544 err = brcmf_usb_register();
1545 if (err)
1546 goto error_usb_register;
1547
1548 err = brcmf_pcie_register();
1549 if (err)
1550 goto error_pcie_register;
1551 return 0;
1552
1553 error_pcie_register:
1554 brcmf_usb_exit();
1555 error_usb_register:
1556 brcmf_sdio_exit();
1557 return err;
1558 }
1559
brcmf_core_exit(void)1560 void __exit brcmf_core_exit(void)
1561 {
1562 brcmf_sdio_exit();
1563 brcmf_usb_exit();
1564 brcmf_pcie_exit();
1565 }
1566
1567