2 * Copyright (c) 2010 Broadcom Corporation
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.
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.
17 #include <linux/kernel.h>
18 #include <linux/string.h>
19 #include <linux/netdevice.h>
20 #include <brcmu_wifi.h>
21 #include <brcmu_utils.h>
24 #include "dhd_proto.h"
27 #include "tracepoint.h"
29 #define PKTFILTER_BUF_SIZE 128
30 #define BRCMF_DEFAULT_BCN_TIMEOUT 3
31 #define BRCMF_DEFAULT_SCAN_CHANNEL_TIME 40
32 #define BRCMF_DEFAULT_SCAN_UNASSOC_TIME 40
33 #define BRCMF_DEFAULT_PACKET_FILTER "100 0 0 0 0x01 0x00"
35 static const char brcmf_version[] =
36 "Dongle Host Driver, version " BRCMF_VERSION_STR;
38 bool brcmf_c_prec_enq(struct device *dev, struct pktq *q,
39 struct sk_buff *pkt, int prec)
42 int eprec = -1; /* precedence to evict from */
44 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
45 struct brcmf_pub *drvr = bus_if->drvr;
47 /* Fast case, precedence queue is not full and we are also not
48 * exceeding total queue length
50 if (!pktq_pfull(q, prec) && !pktq_full(q)) {
51 brcmu_pktq_penq(q, prec, pkt);
55 /* Determine precedence from which to evict packet, if any */
56 if (pktq_pfull(q, prec))
58 else if (pktq_full(q)) {
59 p = brcmu_pktq_peek_tail(q, &eprec);
66 /* Detect queueing to unconfigured precedence */
67 discard_oldest = ac_bitmap_tst(drvr->wme_dp, eprec);
68 if (eprec == prec && !discard_oldest)
69 return false; /* refuse newer (incoming) packet */
70 /* Evict packet according to discard policy */
71 p = discard_oldest ? brcmu_pktq_pdeq(q, eprec) :
72 brcmu_pktq_pdeq_tail(q, eprec);
74 brcmf_err("brcmu_pktq_penq() failed, oldest %d\n",
77 brcmu_pkt_buf_free_skb(p);
81 p = brcmu_pktq_penq(q, prec, pkt);
83 brcmf_err("brcmu_pktq_penq() failed\n");
88 /* Convert user's input in hex pattern to byte-size mask */
89 static int brcmf_c_pattern_atoh(char *src, char *dst)
92 if (strncmp(src, "0x", 2) != 0 && strncmp(src, "0X", 2) != 0) {
93 brcmf_err("Mask invalid format. Needs to start with 0x\n");
96 src = src + 2; /* Skip past 0x */
97 if (strlen(src) % 2 != 0) {
98 brcmf_err("Mask invalid format. Length must be even.\n");
101 for (i = 0; *src != '\0'; i++) {
104 strncpy(num, src, 2);
106 if (kstrtoul(num, 16, &res))
115 brcmf_c_pktfilter_offload_enable(struct brcmf_if *ifp, char *arg, int enable,
120 char *arg_save = NULL, *arg_org = NULL;
122 struct brcmf_pkt_filter_enable_le enable_parm;
124 arg_save = kstrdup(arg, GFP_ATOMIC);
130 argv = strsep(&arg_save, " ");
133 brcmf_err("No args provided\n");
137 /* Parse packet filter id. */
139 if (!kstrtoul(argv, 0, &res))
140 enable_parm.id = cpu_to_le32((u32)res);
142 /* Enable/disable the specified filter. */
143 enable_parm.enable = cpu_to_le32(enable);
145 err = brcmf_fil_iovar_data_set(ifp, "pkt_filter_enable", &enable_parm,
146 sizeof(enable_parm));
148 brcmf_err("Set pkt_filter_enable error (%d)\n", err);
150 /* Control the master mode */
151 err = brcmf_fil_iovar_int_set(ifp, "pkt_filter_mode", master_mode);
153 brcmf_err("Set pkt_filter_mode error (%d)\n", err);
159 static void brcmf_c_pktfilter_offload_set(struct brcmf_if *ifp, char *arg)
161 struct brcmf_pkt_filter_le *pkt_filter;
167 char *argv[8], *buf = NULL;
169 char *arg_save = NULL, *arg_org = NULL;
171 arg_save = kstrdup(arg, GFP_ATOMIC);
177 buf = kmalloc(PKTFILTER_BUF_SIZE, GFP_ATOMIC);
181 argv[i] = strsep(&arg_save, " ");
185 brcmf_err("Too many parameters\n");
188 argv[i] = strsep(&arg_save, " ");
192 brcmf_err("Not enough args provided %d\n", i);
196 pkt_filter = (struct brcmf_pkt_filter_le *)buf;
198 /* Parse packet filter id. */
200 if (!kstrtoul(argv[0], 0, &res))
201 pkt_filter->id = cpu_to_le32((u32)res);
203 /* Parse filter polarity. */
204 pkt_filter->negate_match = 0;
205 if (!kstrtoul(argv[1], 0, &res))
206 pkt_filter->negate_match = cpu_to_le32((u32)res);
208 /* Parse filter type. */
209 pkt_filter->type = 0;
210 if (!kstrtoul(argv[2], 0, &res))
211 pkt_filter->type = cpu_to_le32((u32)res);
213 /* Parse pattern filter offset. */
214 pkt_filter->u.pattern.offset = 0;
215 if (!kstrtoul(argv[3], 0, &res))
216 pkt_filter->u.pattern.offset = cpu_to_le32((u32)res);
218 /* Parse pattern filter mask. */
219 mask_size = brcmf_c_pattern_atoh(argv[4],
220 (char *)pkt_filter->u.pattern.mask_and_pattern);
222 /* Parse pattern filter pattern. */
223 pattern_size = brcmf_c_pattern_atoh(argv[5],
224 (char *)&pkt_filter->u.pattern.mask_and_pattern[mask_size]);
226 if (mask_size != pattern_size) {
227 brcmf_err("Mask and pattern not the same size\n");
231 pkt_filter->u.pattern.size_bytes = cpu_to_le32(mask_size);
232 buf_len = offsetof(struct brcmf_pkt_filter_le,
233 u.pattern.mask_and_pattern);
234 buf_len += mask_size + pattern_size;
236 err = brcmf_fil_iovar_data_set(ifp, "pkt_filter_add", pkt_filter,
239 brcmf_err("Set pkt_filter_add error (%d)\n", err);
247 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
249 s8 eventmask[BRCMF_EVENTING_MASK_LEN];
250 u8 buf[BRCMF_DCMD_SMLEN];
253 struct brcmf_bus_dcmd *cmdlst;
254 struct list_head *cur, *q;
256 /* retreive mac address */
257 err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr,
258 sizeof(ifp->mac_addr));
260 brcmf_err("Retreiving cur_etheraddr failed, %d\n",
264 memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac));
266 /* query for 'ver' to get version info from firmware */
267 memset(buf, 0, sizeof(buf));
269 err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf));
271 brcmf_err("Retreiving version information failed, %d\n",
277 /* Print fw version info */
278 brcmf_err("Firmware version = %s\n", buf);
281 * Setup timeout if Beacons are lost and roam is off to report
284 err = brcmf_fil_iovar_int_set(ifp, "bcn_timeout",
285 BRCMF_DEFAULT_BCN_TIMEOUT);
287 brcmf_err("bcn_timeout error (%d)\n", err);
291 /* Enable/Disable build-in roaming to allowed ext supplicant to take
294 err = brcmf_fil_iovar_int_set(ifp, "roam_off", 1);
296 brcmf_err("roam_off error (%d)\n", err);
300 /* Setup event_msgs, enable E_IF */
301 err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask,
302 BRCMF_EVENTING_MASK_LEN);
304 brcmf_err("Get event_msgs error (%d)\n", err);
307 setbit(eventmask, BRCMF_E_IF);
308 err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask,
309 BRCMF_EVENTING_MASK_LEN);
311 brcmf_err("Set event_msgs error (%d)\n", err);
315 /* Setup default scan channel time */
316 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME,
317 BRCMF_DEFAULT_SCAN_CHANNEL_TIME);
319 brcmf_err("BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n",
324 /* Setup default scan unassoc time */
325 err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME,
326 BRCMF_DEFAULT_SCAN_UNASSOC_TIME);
328 brcmf_err("BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n",
333 /* Setup packet filter */
334 brcmf_c_pktfilter_offload_set(ifp, BRCMF_DEFAULT_PACKET_FILTER);
335 brcmf_c_pktfilter_offload_enable(ifp, BRCMF_DEFAULT_PACKET_FILTER,
338 /* set bus specific command if there is any */
339 list_for_each_safe(cur, q, &ifp->drvr->bus_if->dcmd_list) {
340 cmdlst = list_entry(cur, struct brcmf_bus_dcmd, list);
341 if (cmdlst->name && cmdlst->param && cmdlst->param_len) {
342 brcmf_fil_iovar_data_set(ifp, cmdlst->name,
353 #ifdef CONFIG_BRCM_TRACING
354 void __brcmf_err(const char *func, const char *fmt, ...)
356 struct va_format vaf = {
363 pr_err("%s: %pV", func, &vaf);
364 trace_brcmf_err(func, &vaf);
368 #if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG)
369 void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...)
371 struct va_format vaf = {
378 if (brcmf_msg_level & level)
379 pr_debug("%s %pV", func, &vaf);
380 trace_brcmf_dbg(level, func, &vaf);