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