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-rw-r--r--net/mac80211/mesh_hwmp.c413
1 files changed, 273 insertions, 140 deletions
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 29b82e98effa..833b2f3670c5 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -1,5 +1,5 @@
1/* 1/*
2 * Copyright (c) 2008 open80211s Ltd. 2 * Copyright (c) 2008, 2009 open80211s Ltd.
3 * Author: Luis Carlos Cobo <luisca@cozybit.com> 3 * Author: Luis Carlos Cobo <luisca@cozybit.com>
4 * 4 *
5 * This program is free software; you can redistribute it and/or modify 5 * This program is free software; you can redistribute it and/or modify
@@ -9,6 +9,12 @@
9 9
10#include "mesh.h" 10#include "mesh.h"
11 11
12#ifdef CONFIG_MAC80211_VERBOSE_MHWMP_DEBUG
13#define mhwmp_dbg(fmt, args...) printk(KERN_DEBUG "Mesh HWMP: " fmt, ##args)
14#else
15#define mhwmp_dbg(fmt, args...) do { (void)(0); } while (0)
16#endif
17
12#define TEST_FRAME_LEN 8192 18#define TEST_FRAME_LEN 8192
13#define MAX_METRIC 0xffffffff 19#define MAX_METRIC 0xffffffff
14#define ARITH_SHIFT 8 20#define ARITH_SHIFT 8
@@ -21,6 +27,12 @@
21#define MP_F_DO 0x1 27#define MP_F_DO 0x1
22/* Reply and forward */ 28/* Reply and forward */
23#define MP_F_RF 0x2 29#define MP_F_RF 0x2
30/* Unknown Sequence Number */
31#define MP_F_USN 0x01
32/* Reason code Present */
33#define MP_F_RCODE 0x02
34
35static void mesh_queue_preq(struct mesh_path *, u8);
24 36
25static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae) 37static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
26{ 38{
@@ -29,6 +41,13 @@ static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
29 return get_unaligned_le32(preq_elem + offset); 41 return get_unaligned_le32(preq_elem + offset);
30} 42}
31 43
44static inline u32 u16_field_get(u8 *preq_elem, int offset, bool ae)
45{
46 if (ae)
47 offset += 6;
48 return get_unaligned_le16(preq_elem + offset);
49}
50
32/* HWMP IE processing macros */ 51/* HWMP IE processing macros */
33#define AE_F (1<<6) 52#define AE_F (1<<6)
34#define AE_F_SET(x) (*x & AE_F) 53#define AE_F_SET(x) (*x & AE_F)
@@ -37,30 +56,33 @@ static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
37#define PREQ_IE_TTL(x) (*(x + 2)) 56#define PREQ_IE_TTL(x) (*(x + 2))
38#define PREQ_IE_PREQ_ID(x) u32_field_get(x, 3, 0) 57#define PREQ_IE_PREQ_ID(x) u32_field_get(x, 3, 0)
39#define PREQ_IE_ORIG_ADDR(x) (x + 7) 58#define PREQ_IE_ORIG_ADDR(x) (x + 7)
40#define PREQ_IE_ORIG_DSN(x) u32_field_get(x, 13, 0); 59#define PREQ_IE_ORIG_SN(x) u32_field_get(x, 13, 0);
41#define PREQ_IE_LIFETIME(x) u32_field_get(x, 17, AE_F_SET(x)); 60#define PREQ_IE_LIFETIME(x) u32_field_get(x, 17, AE_F_SET(x));
42#define PREQ_IE_METRIC(x) u32_field_get(x, 21, AE_F_SET(x)); 61#define PREQ_IE_METRIC(x) u32_field_get(x, 21, AE_F_SET(x));
43#define PREQ_IE_DST_F(x) (*(AE_F_SET(x) ? x + 32 : x + 26)) 62#define PREQ_IE_TARGET_F(x) (*(AE_F_SET(x) ? x + 32 : x + 26))
44#define PREQ_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 33 : x + 27) 63#define PREQ_IE_TARGET_ADDR(x) (AE_F_SET(x) ? x + 33 : x + 27)
45#define PREQ_IE_DST_DSN(x) u32_field_get(x, 33, AE_F_SET(x)); 64#define PREQ_IE_TARGET_SN(x) u32_field_get(x, 33, AE_F_SET(x));
46 65
47 66
48#define PREP_IE_FLAGS(x) PREQ_IE_FLAGS(x) 67#define PREP_IE_FLAGS(x) PREQ_IE_FLAGS(x)
49#define PREP_IE_HOPCOUNT(x) PREQ_IE_HOPCOUNT(x) 68#define PREP_IE_HOPCOUNT(x) PREQ_IE_HOPCOUNT(x)
50#define PREP_IE_TTL(x) PREQ_IE_TTL(x) 69#define PREP_IE_TTL(x) PREQ_IE_TTL(x)
51#define PREP_IE_ORIG_ADDR(x) (x + 3) 70#define PREP_IE_ORIG_ADDR(x) (x + 3)
52#define PREP_IE_ORIG_DSN(x) u32_field_get(x, 9, 0); 71#define PREP_IE_ORIG_SN(x) u32_field_get(x, 9, 0);
53#define PREP_IE_LIFETIME(x) u32_field_get(x, 13, AE_F_SET(x)); 72#define PREP_IE_LIFETIME(x) u32_field_get(x, 13, AE_F_SET(x));
54#define PREP_IE_METRIC(x) u32_field_get(x, 17, AE_F_SET(x)); 73#define PREP_IE_METRIC(x) u32_field_get(x, 17, AE_F_SET(x));
55#define PREP_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21) 74#define PREP_IE_TARGET_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21)
56#define PREP_IE_DST_DSN(x) u32_field_get(x, 27, AE_F_SET(x)); 75#define PREP_IE_TARGET_SN(x) u32_field_get(x, 27, AE_F_SET(x));
57 76
58#define PERR_IE_DST_ADDR(x) (x + 2) 77#define PERR_IE_TTL(x) (*(x))
59#define PERR_IE_DST_DSN(x) u32_field_get(x, 8, 0); 78#define PERR_IE_TARGET_FLAGS(x) (*(x + 2))
79#define PERR_IE_TARGET_ADDR(x) (x + 3)
80#define PERR_IE_TARGET_SN(x) u32_field_get(x, 9, 0);
81#define PERR_IE_TARGET_RCODE(x) u16_field_get(x, 13, 0);
60 82
61#define MSEC_TO_TU(x) (x*1000/1024) 83#define MSEC_TO_TU(x) (x*1000/1024)
62#define DSN_GT(x, y) ((long) (y) - (long) (x) < 0) 84#define SN_GT(x, y) ((long) (y) - (long) (x) < 0)
63#define DSN_LT(x, y) ((long) (x) - (long) (y) < 0) 85#define SN_LT(x, y) ((long) (x) - (long) (y) < 0)
64 86
65#define net_traversal_jiffies(s) \ 87#define net_traversal_jiffies(s) \
66 msecs_to_jiffies(s->u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime) 88 msecs_to_jiffies(s->u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime)
@@ -75,13 +97,17 @@ static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
75enum mpath_frame_type { 97enum mpath_frame_type {
76 MPATH_PREQ = 0, 98 MPATH_PREQ = 0,
77 MPATH_PREP, 99 MPATH_PREP,
78 MPATH_PERR 100 MPATH_PERR,
101 MPATH_RANN
79}; 102};
80 103
104static const u8 broadcast_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
105
81static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags, 106static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
82 u8 *orig_addr, __le32 orig_dsn, u8 dst_flags, u8 *dst, 107 u8 *orig_addr, __le32 orig_sn, u8 target_flags, u8 *target,
83 __le32 dst_dsn, u8 *da, u8 hop_count, u8 ttl, __le32 lifetime, 108 __le32 target_sn, const u8 *da, u8 hop_count, u8 ttl,
84 __le32 metric, __le32 preq_id, struct ieee80211_sub_if_data *sdata) 109 __le32 lifetime, __le32 metric, __le32 preq_id,
110 struct ieee80211_sub_if_data *sdata)
85{ 111{
86 struct ieee80211_local *local = sdata->local; 112 struct ieee80211_local *local = sdata->local;
87 struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); 113 struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
@@ -103,21 +129,30 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
103 129
104 memcpy(mgmt->da, da, ETH_ALEN); 130 memcpy(mgmt->da, da, ETH_ALEN);
105 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); 131 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
106 /* BSSID is left zeroed, wildcard value */ 132 /* BSSID == SA */
133 memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN);
107 mgmt->u.action.category = MESH_PATH_SEL_CATEGORY; 134 mgmt->u.action.category = MESH_PATH_SEL_CATEGORY;
108 mgmt->u.action.u.mesh_action.action_code = action; 135 mgmt->u.action.u.mesh_action.action_code = MESH_PATH_SEL_ACTION;
109 136
110 switch (action) { 137 switch (action) {
111 case MPATH_PREQ: 138 case MPATH_PREQ:
139 mhwmp_dbg("sending PREQ to %pM\n", target);
112 ie_len = 37; 140 ie_len = 37;
113 pos = skb_put(skb, 2 + ie_len); 141 pos = skb_put(skb, 2 + ie_len);
114 *pos++ = WLAN_EID_PREQ; 142 *pos++ = WLAN_EID_PREQ;
115 break; 143 break;
116 case MPATH_PREP: 144 case MPATH_PREP:
145 mhwmp_dbg("sending PREP to %pM\n", target);
117 ie_len = 31; 146 ie_len = 31;
118 pos = skb_put(skb, 2 + ie_len); 147 pos = skb_put(skb, 2 + ie_len);
119 *pos++ = WLAN_EID_PREP; 148 *pos++ = WLAN_EID_PREP;
120 break; 149 break;
150 case MPATH_RANN:
151 mhwmp_dbg("sending RANN from %pM\n", orig_addr);
152 ie_len = sizeof(struct ieee80211_rann_ie);
153 pos = skb_put(skb, 2 + ie_len);
154 *pos++ = WLAN_EID_RANN;
155 break;
121 default: 156 default:
122 kfree_skb(skb); 157 kfree_skb(skb);
123 return -ENOTSUPP; 158 return -ENOTSUPP;
@@ -133,34 +168,40 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
133 } 168 }
134 memcpy(pos, orig_addr, ETH_ALEN); 169 memcpy(pos, orig_addr, ETH_ALEN);
135 pos += ETH_ALEN; 170 pos += ETH_ALEN;
136 memcpy(pos, &orig_dsn, 4); 171 memcpy(pos, &orig_sn, 4);
137 pos += 4;
138 memcpy(pos, &lifetime, 4);
139 pos += 4; 172 pos += 4;
173 if (action != MPATH_RANN) {
174 memcpy(pos, &lifetime, 4);
175 pos += 4;
176 }
140 memcpy(pos, &metric, 4); 177 memcpy(pos, &metric, 4);
141 pos += 4; 178 pos += 4;
142 if (action == MPATH_PREQ) { 179 if (action == MPATH_PREQ) {
143 /* destination count */ 180 /* destination count */
144 *pos++ = 1; 181 *pos++ = 1;
145 *pos++ = dst_flags; 182 *pos++ = target_flags;
183 }
184 if (action != MPATH_RANN) {
185 memcpy(pos, target, ETH_ALEN);
186 pos += ETH_ALEN;
187 memcpy(pos, &target_sn, 4);
146 } 188 }
147 memcpy(pos, dst, ETH_ALEN);
148 pos += ETH_ALEN;
149 memcpy(pos, &dst_dsn, 4);
150 189
151 ieee80211_tx_skb(sdata, skb, 1); 190 ieee80211_tx_skb(sdata, skb);
152 return 0; 191 return 0;
153} 192}
154 193
155/** 194/**
156 * mesh_send_path error - Sends a PERR mesh management frame 195 * mesh_send_path error - Sends a PERR mesh management frame
157 * 196 *
158 * @dst: broken destination 197 * @target: broken destination
159 * @dst_dsn: dsn of the broken destination 198 * @target_sn: SN of the broken destination
199 * @target_rcode: reason code for this PERR
160 * @ra: node this frame is addressed to 200 * @ra: node this frame is addressed to
161 */ 201 */
162int mesh_path_error_tx(u8 *dst, __le32 dst_dsn, u8 *ra, 202int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
163 struct ieee80211_sub_if_data *sdata) 203 __le16 target_rcode, const u8 *ra,
204 struct ieee80211_sub_if_data *sdata)
164{ 205{
165 struct ieee80211_local *local = sdata->local; 206 struct ieee80211_local *local = sdata->local;
166 struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); 207 struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
@@ -184,20 +225,32 @@ int mesh_path_error_tx(u8 *dst, __le32 dst_dsn, u8 *ra,
184 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); 225 memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
185 /* BSSID is left zeroed, wildcard value */ 226 /* BSSID is left zeroed, wildcard value */
186 mgmt->u.action.category = MESH_PATH_SEL_CATEGORY; 227 mgmt->u.action.category = MESH_PATH_SEL_CATEGORY;
187 mgmt->u.action.u.mesh_action.action_code = MPATH_PERR; 228 mgmt->u.action.u.mesh_action.action_code = MESH_PATH_SEL_ACTION;
188 ie_len = 12; 229 ie_len = 15;
189 pos = skb_put(skb, 2 + ie_len); 230 pos = skb_put(skb, 2 + ie_len);
190 *pos++ = WLAN_EID_PERR; 231 *pos++ = WLAN_EID_PERR;
191 *pos++ = ie_len; 232 *pos++ = ie_len;
192 /* mode flags, reserved */ 233 /* ttl */
193 *pos++ = 0; 234 *pos++ = MESH_TTL;
194 /* number of destinations */ 235 /* number of destinations */
195 *pos++ = 1; 236 *pos++ = 1;
196 memcpy(pos, dst, ETH_ALEN); 237 /*
238 * flags bit, bit 1 is unset if we know the sequence number and
239 * bit 2 is set if we have a reason code
240 */
241 *pos = 0;
242 if (!target_sn)
243 *pos |= MP_F_USN;
244 if (target_rcode)
245 *pos |= MP_F_RCODE;
246 pos++;
247 memcpy(pos, target, ETH_ALEN);
197 pos += ETH_ALEN; 248 pos += ETH_ALEN;
198 memcpy(pos, &dst_dsn, 4); 249 memcpy(pos, &target_sn, 4);
250 pos += 4;
251 memcpy(pos, &target_rcode, 2);
199 252
200 ieee80211_tx_skb(sdata, skb, 1); 253 ieee80211_tx_skb(sdata, skb);
201 return 0; 254 return 0;
202} 255}
203 256
@@ -269,18 +322,17 @@ static u32 airtime_link_metric_get(struct ieee80211_local *local,
269 */ 322 */
270static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata, 323static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
271 struct ieee80211_mgmt *mgmt, 324 struct ieee80211_mgmt *mgmt,
272 u8 *hwmp_ie) 325 u8 *hwmp_ie, enum mpath_frame_type action)
273{ 326{
274 struct ieee80211_local *local = sdata->local; 327 struct ieee80211_local *local = sdata->local;
275 struct mesh_path *mpath; 328 struct mesh_path *mpath;
276 struct sta_info *sta; 329 struct sta_info *sta;
277 bool fresh_info; 330 bool fresh_info;
278 u8 *orig_addr, *ta; 331 u8 *orig_addr, *ta;
279 u32 orig_dsn, orig_metric; 332 u32 orig_sn, orig_metric;
280 unsigned long orig_lifetime, exp_time; 333 unsigned long orig_lifetime, exp_time;
281 u32 last_hop_metric, new_metric; 334 u32 last_hop_metric, new_metric;
282 bool process = true; 335 bool process = true;
283 u8 action = mgmt->u.action.u.mesh_action.action_code;
284 336
285 rcu_read_lock(); 337 rcu_read_lock();
286 sta = sta_info_get(local, mgmt->sa); 338 sta = sta_info_get(local, mgmt->sa);
@@ -296,7 +348,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
296 switch (action) { 348 switch (action) {
297 case MPATH_PREQ: 349 case MPATH_PREQ:
298 orig_addr = PREQ_IE_ORIG_ADDR(hwmp_ie); 350 orig_addr = PREQ_IE_ORIG_ADDR(hwmp_ie);
299 orig_dsn = PREQ_IE_ORIG_DSN(hwmp_ie); 351 orig_sn = PREQ_IE_ORIG_SN(hwmp_ie);
300 orig_lifetime = PREQ_IE_LIFETIME(hwmp_ie); 352 orig_lifetime = PREQ_IE_LIFETIME(hwmp_ie);
301 orig_metric = PREQ_IE_METRIC(hwmp_ie); 353 orig_metric = PREQ_IE_METRIC(hwmp_ie);
302 break; 354 break;
@@ -309,7 +361,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
309 * information from both PREQ and PREP frames. 361 * information from both PREQ and PREP frames.
310 */ 362 */
311 orig_addr = PREP_IE_ORIG_ADDR(hwmp_ie); 363 orig_addr = PREP_IE_ORIG_ADDR(hwmp_ie);
312 orig_dsn = PREP_IE_ORIG_DSN(hwmp_ie); 364 orig_sn = PREP_IE_ORIG_SN(hwmp_ie);
313 orig_lifetime = PREP_IE_LIFETIME(hwmp_ie); 365 orig_lifetime = PREP_IE_LIFETIME(hwmp_ie);
314 orig_metric = PREP_IE_METRIC(hwmp_ie); 366 orig_metric = PREP_IE_METRIC(hwmp_ie);
315 break; 367 break;
@@ -335,9 +387,9 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
335 if (mpath->flags & MESH_PATH_FIXED) 387 if (mpath->flags & MESH_PATH_FIXED)
336 fresh_info = false; 388 fresh_info = false;
337 else if ((mpath->flags & MESH_PATH_ACTIVE) && 389 else if ((mpath->flags & MESH_PATH_ACTIVE) &&
338 (mpath->flags & MESH_PATH_DSN_VALID)) { 390 (mpath->flags & MESH_PATH_SN_VALID)) {
339 if (DSN_GT(mpath->dsn, orig_dsn) || 391 if (SN_GT(mpath->sn, orig_sn) ||
340 (mpath->dsn == orig_dsn && 392 (mpath->sn == orig_sn &&
341 action == MPATH_PREQ && 393 action == MPATH_PREQ &&
342 new_metric > mpath->metric)) { 394 new_metric > mpath->metric)) {
343 process = false; 395 process = false;
@@ -356,9 +408,9 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
356 408
357 if (fresh_info) { 409 if (fresh_info) {
358 mesh_path_assign_nexthop(mpath, sta); 410 mesh_path_assign_nexthop(mpath, sta);
359 mpath->flags |= MESH_PATH_DSN_VALID; 411 mpath->flags |= MESH_PATH_SN_VALID;
360 mpath->metric = new_metric; 412 mpath->metric = new_metric;
361 mpath->dsn = orig_dsn; 413 mpath->sn = orig_sn;
362 mpath->exp_time = time_after(mpath->exp_time, exp_time) 414 mpath->exp_time = time_after(mpath->exp_time, exp_time)
363 ? mpath->exp_time : exp_time; 415 ? mpath->exp_time : exp_time;
364 mesh_path_activate(mpath); 416 mesh_path_activate(mpath);
@@ -397,7 +449,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
397 449
398 if (fresh_info) { 450 if (fresh_info) {
399 mesh_path_assign_nexthop(mpath, sta); 451 mesh_path_assign_nexthop(mpath, sta);
400 mpath->flags &= ~MESH_PATH_DSN_VALID; 452 mpath->flags &= ~MESH_PATH_SN_VALID;
401 mpath->metric = last_hop_metric; 453 mpath->metric = last_hop_metric;
402 mpath->exp_time = time_after(mpath->exp_time, exp_time) 454 mpath->exp_time = time_after(mpath->exp_time, exp_time)
403 ? mpath->exp_time : exp_time; 455 ? mpath->exp_time : exp_time;
@@ -419,44 +471,47 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
419{ 471{
420 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 472 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
421 struct mesh_path *mpath; 473 struct mesh_path *mpath;
422 u8 *dst_addr, *orig_addr; 474 u8 *target_addr, *orig_addr;
423 u8 dst_flags, ttl; 475 u8 target_flags, ttl;
424 u32 orig_dsn, dst_dsn, lifetime; 476 u32 orig_sn, target_sn, lifetime;
425 bool reply = false; 477 bool reply = false;
426 bool forward = true; 478 bool forward = true;
427 479
428 /* Update destination DSN, if present */ 480 /* Update target SN, if present */
429 dst_addr = PREQ_IE_DST_ADDR(preq_elem); 481 target_addr = PREQ_IE_TARGET_ADDR(preq_elem);
430 orig_addr = PREQ_IE_ORIG_ADDR(preq_elem); 482 orig_addr = PREQ_IE_ORIG_ADDR(preq_elem);
431 dst_dsn = PREQ_IE_DST_DSN(preq_elem); 483 target_sn = PREQ_IE_TARGET_SN(preq_elem);
432 orig_dsn = PREQ_IE_ORIG_DSN(preq_elem); 484 orig_sn = PREQ_IE_ORIG_SN(preq_elem);
433 dst_flags = PREQ_IE_DST_F(preq_elem); 485 target_flags = PREQ_IE_TARGET_F(preq_elem);
434 486
435 if (memcmp(dst_addr, sdata->dev->dev_addr, ETH_ALEN) == 0) { 487 mhwmp_dbg("received PREQ from %pM\n", orig_addr);
488
489 if (memcmp(target_addr, sdata->dev->dev_addr, ETH_ALEN) == 0) {
490 mhwmp_dbg("PREQ is for us\n");
436 forward = false; 491 forward = false;
437 reply = true; 492 reply = true;
438 metric = 0; 493 metric = 0;
439 if (time_after(jiffies, ifmsh->last_dsn_update + 494 if (time_after(jiffies, ifmsh->last_sn_update +
440 net_traversal_jiffies(sdata)) || 495 net_traversal_jiffies(sdata)) ||
441 time_before(jiffies, ifmsh->last_dsn_update)) { 496 time_before(jiffies, ifmsh->last_sn_update)) {
442 dst_dsn = ++ifmsh->dsn; 497 target_sn = ++ifmsh->sn;
443 ifmsh->last_dsn_update = jiffies; 498 ifmsh->last_sn_update = jiffies;
444 } 499 }
445 } else { 500 } else {
446 rcu_read_lock(); 501 rcu_read_lock();
447 mpath = mesh_path_lookup(dst_addr, sdata); 502 mpath = mesh_path_lookup(target_addr, sdata);
448 if (mpath) { 503 if (mpath) {
449 if ((!(mpath->flags & MESH_PATH_DSN_VALID)) || 504 if ((!(mpath->flags & MESH_PATH_SN_VALID)) ||
450 DSN_LT(mpath->dsn, dst_dsn)) { 505 SN_LT(mpath->sn, target_sn)) {
451 mpath->dsn = dst_dsn; 506 mpath->sn = target_sn;
452 mpath->flags |= MESH_PATH_DSN_VALID; 507 mpath->flags |= MESH_PATH_SN_VALID;
453 } else if ((!(dst_flags & MP_F_DO)) && 508 } else if ((!(target_flags & MP_F_DO)) &&
454 (mpath->flags & MESH_PATH_ACTIVE)) { 509 (mpath->flags & MESH_PATH_ACTIVE)) {
455 reply = true; 510 reply = true;
456 metric = mpath->metric; 511 metric = mpath->metric;
457 dst_dsn = mpath->dsn; 512 target_sn = mpath->sn;
458 if (dst_flags & MP_F_RF) 513 if (target_flags & MP_F_RF)
459 dst_flags |= MP_F_DO; 514 target_flags |= MP_F_DO;
460 else 515 else
461 forward = false; 516 forward = false;
462 } 517 }
@@ -467,13 +522,14 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
467 if (reply) { 522 if (reply) {
468 lifetime = PREQ_IE_LIFETIME(preq_elem); 523 lifetime = PREQ_IE_LIFETIME(preq_elem);
469 ttl = ifmsh->mshcfg.dot11MeshTTL; 524 ttl = ifmsh->mshcfg.dot11MeshTTL;
470 if (ttl != 0) 525 if (ttl != 0) {
471 mesh_path_sel_frame_tx(MPATH_PREP, 0, dst_addr, 526 mhwmp_dbg("replying to the PREQ\n");
472 cpu_to_le32(dst_dsn), 0, orig_addr, 527 mesh_path_sel_frame_tx(MPATH_PREP, 0, target_addr,
473 cpu_to_le32(orig_dsn), mgmt->sa, 0, ttl, 528 cpu_to_le32(target_sn), 0, orig_addr,
529 cpu_to_le32(orig_sn), mgmt->sa, 0, ttl,
474 cpu_to_le32(lifetime), cpu_to_le32(metric), 530 cpu_to_le32(lifetime), cpu_to_le32(metric),
475 0, sdata); 531 0, sdata);
476 else 532 } else
477 ifmsh->mshstats.dropped_frames_ttl++; 533 ifmsh->mshstats.dropped_frames_ttl++;
478 } 534 }
479 535
@@ -487,13 +543,14 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
487 ifmsh->mshstats.dropped_frames_ttl++; 543 ifmsh->mshstats.dropped_frames_ttl++;
488 return; 544 return;
489 } 545 }
546 mhwmp_dbg("forwarding the PREQ from %pM\n", orig_addr);
490 --ttl; 547 --ttl;
491 flags = PREQ_IE_FLAGS(preq_elem); 548 flags = PREQ_IE_FLAGS(preq_elem);
492 preq_id = PREQ_IE_PREQ_ID(preq_elem); 549 preq_id = PREQ_IE_PREQ_ID(preq_elem);
493 hopcount = PREQ_IE_HOPCOUNT(preq_elem) + 1; 550 hopcount = PREQ_IE_HOPCOUNT(preq_elem) + 1;
494 mesh_path_sel_frame_tx(MPATH_PREQ, flags, orig_addr, 551 mesh_path_sel_frame_tx(MPATH_PREQ, flags, orig_addr,
495 cpu_to_le32(orig_dsn), dst_flags, dst_addr, 552 cpu_to_le32(orig_sn), target_flags, target_addr,
496 cpu_to_le32(dst_dsn), sdata->dev->broadcast, 553 cpu_to_le32(target_sn), broadcast_addr,
497 hopcount, ttl, cpu_to_le32(lifetime), 554 hopcount, ttl, cpu_to_le32(lifetime),
498 cpu_to_le32(metric), cpu_to_le32(preq_id), 555 cpu_to_le32(metric), cpu_to_le32(preq_id),
499 sdata); 556 sdata);
@@ -508,10 +565,12 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
508 u8 *prep_elem, u32 metric) 565 u8 *prep_elem, u32 metric)
509{ 566{
510 struct mesh_path *mpath; 567 struct mesh_path *mpath;
511 u8 *dst_addr, *orig_addr; 568 u8 *target_addr, *orig_addr;
512 u8 ttl, hopcount, flags; 569 u8 ttl, hopcount, flags;
513 u8 next_hop[ETH_ALEN]; 570 u8 next_hop[ETH_ALEN];
514 u32 dst_dsn, orig_dsn, lifetime; 571 u32 target_sn, orig_sn, lifetime;
572
573 mhwmp_dbg("received PREP from %pM\n", PREP_IE_ORIG_ADDR(prep_elem));
515 574
516 /* Note that we divert from the draft nomenclature and denominate 575 /* Note that we divert from the draft nomenclature and denominate
517 * destination to what the draft refers to as origininator. So in this 576 * destination to what the draft refers to as origininator. So in this
@@ -519,8 +578,8 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
519 * which corresponds with the originator of the PREQ which this PREP 578 * which corresponds with the originator of the PREQ which this PREP
520 * replies 579 * replies
521 */ 580 */
522 dst_addr = PREP_IE_DST_ADDR(prep_elem); 581 target_addr = PREP_IE_TARGET_ADDR(prep_elem);
523 if (memcmp(dst_addr, sdata->dev->dev_addr, ETH_ALEN) == 0) 582 if (memcmp(target_addr, sdata->dev->dev_addr, ETH_ALEN) == 0)
524 /* destination, no forwarding required */ 583 /* destination, no forwarding required */
525 return; 584 return;
526 585
@@ -531,7 +590,7 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
531 } 590 }
532 591
533 rcu_read_lock(); 592 rcu_read_lock();
534 mpath = mesh_path_lookup(dst_addr, sdata); 593 mpath = mesh_path_lookup(target_addr, sdata);
535 if (mpath) 594 if (mpath)
536 spin_lock_bh(&mpath->state_lock); 595 spin_lock_bh(&mpath->state_lock);
537 else 596 else
@@ -547,13 +606,13 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
547 lifetime = PREP_IE_LIFETIME(prep_elem); 606 lifetime = PREP_IE_LIFETIME(prep_elem);
548 hopcount = PREP_IE_HOPCOUNT(prep_elem) + 1; 607 hopcount = PREP_IE_HOPCOUNT(prep_elem) + 1;
549 orig_addr = PREP_IE_ORIG_ADDR(prep_elem); 608 orig_addr = PREP_IE_ORIG_ADDR(prep_elem);
550 dst_dsn = PREP_IE_DST_DSN(prep_elem); 609 target_sn = PREP_IE_TARGET_SN(prep_elem);
551 orig_dsn = PREP_IE_ORIG_DSN(prep_elem); 610 orig_sn = PREP_IE_ORIG_SN(prep_elem);
552 611
553 mesh_path_sel_frame_tx(MPATH_PREP, flags, orig_addr, 612 mesh_path_sel_frame_tx(MPATH_PREP, flags, orig_addr,
554 cpu_to_le32(orig_dsn), 0, dst_addr, 613 cpu_to_le32(orig_sn), 0, target_addr,
555 cpu_to_le32(dst_dsn), mpath->next_hop->sta.addr, hopcount, ttl, 614 cpu_to_le32(target_sn), mpath->next_hop->sta.addr, hopcount,
556 cpu_to_le32(lifetime), cpu_to_le32(metric), 615 ttl, cpu_to_le32(lifetime), cpu_to_le32(metric),
557 0, sdata); 616 0, sdata);
558 rcu_read_unlock(); 617 rcu_read_unlock();
559 618
@@ -570,32 +629,96 @@ fail:
570static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata, 629static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata,
571 struct ieee80211_mgmt *mgmt, u8 *perr_elem) 630 struct ieee80211_mgmt *mgmt, u8 *perr_elem)
572{ 631{
632 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
573 struct mesh_path *mpath; 633 struct mesh_path *mpath;
574 u8 *ta, *dst_addr; 634 u8 ttl;
575 u32 dst_dsn; 635 u8 *ta, *target_addr;
636 u8 target_flags;
637 u32 target_sn;
638 u16 target_rcode;
576 639
577 ta = mgmt->sa; 640 ta = mgmt->sa;
578 dst_addr = PERR_IE_DST_ADDR(perr_elem); 641 ttl = PERR_IE_TTL(perr_elem);
579 dst_dsn = PERR_IE_DST_DSN(perr_elem); 642 if (ttl <= 1) {
643 ifmsh->mshstats.dropped_frames_ttl++;
644 return;
645 }
646 ttl--;
647 target_flags = PERR_IE_TARGET_FLAGS(perr_elem);
648 target_addr = PERR_IE_TARGET_ADDR(perr_elem);
649 target_sn = PERR_IE_TARGET_SN(perr_elem);
650 target_rcode = PERR_IE_TARGET_RCODE(perr_elem);
651
580 rcu_read_lock(); 652 rcu_read_lock();
581 mpath = mesh_path_lookup(dst_addr, sdata); 653 mpath = mesh_path_lookup(target_addr, sdata);
582 if (mpath) { 654 if (mpath) {
583 spin_lock_bh(&mpath->state_lock); 655 spin_lock_bh(&mpath->state_lock);
584 if (mpath->flags & MESH_PATH_ACTIVE && 656 if (mpath->flags & MESH_PATH_ACTIVE &&
585 memcmp(ta, mpath->next_hop->sta.addr, ETH_ALEN) == 0 && 657 memcmp(ta, mpath->next_hop->sta.addr, ETH_ALEN) == 0 &&
586 (!(mpath->flags & MESH_PATH_DSN_VALID) || 658 (!(mpath->flags & MESH_PATH_SN_VALID) ||
587 DSN_GT(dst_dsn, mpath->dsn))) { 659 SN_GT(target_sn, mpath->sn))) {
588 mpath->flags &= ~MESH_PATH_ACTIVE; 660 mpath->flags &= ~MESH_PATH_ACTIVE;
589 mpath->dsn = dst_dsn; 661 mpath->sn = target_sn;
590 spin_unlock_bh(&mpath->state_lock); 662 spin_unlock_bh(&mpath->state_lock);
591 mesh_path_error_tx(dst_addr, cpu_to_le32(dst_dsn), 663 mesh_path_error_tx(ttl, target_addr, cpu_to_le32(target_sn),
592 sdata->dev->broadcast, sdata); 664 cpu_to_le16(target_rcode),
665 broadcast_addr, sdata);
593 } else 666 } else
594 spin_unlock_bh(&mpath->state_lock); 667 spin_unlock_bh(&mpath->state_lock);
595 } 668 }
596 rcu_read_unlock(); 669 rcu_read_unlock();
597} 670}
598 671
672static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
673 struct ieee80211_mgmt *mgmt,
674 struct ieee80211_rann_ie *rann)
675{
676 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
677 struct mesh_path *mpath;
678 u8 *ta;
679 u8 ttl, flags, hopcount;
680 u8 *orig_addr;
681 u32 orig_sn, metric;
682
683 ta = mgmt->sa;
684 ttl = rann->rann_ttl;
685 if (ttl <= 1) {
686 ifmsh->mshstats.dropped_frames_ttl++;
687 return;
688 }
689 ttl--;
690 flags = rann->rann_flags;
691 orig_addr = rann->rann_addr;
692 orig_sn = rann->rann_seq;
693 hopcount = rann->rann_hopcount;
694 hopcount++;
695 metric = rann->rann_metric;
696 mhwmp_dbg("received RANN from %pM\n", orig_addr);
697
698 rcu_read_lock();
699 mpath = mesh_path_lookup(orig_addr, sdata);
700 if (!mpath) {
701 mesh_path_add(orig_addr, sdata);
702 mpath = mesh_path_lookup(orig_addr, sdata);
703 if (!mpath) {
704 rcu_read_unlock();
705 sdata->u.mesh.mshstats.dropped_frames_no_route++;
706 return;
707 }
708 mesh_queue_preq(mpath,
709 PREQ_Q_F_START | PREQ_Q_F_REFRESH);
710 }
711 if (mpath->sn < orig_sn) {
712 mesh_path_sel_frame_tx(MPATH_RANN, flags, orig_addr,
713 cpu_to_le32(orig_sn),
714 0, NULL, 0, broadcast_addr,
715 hopcount, ttl, 0,
716 cpu_to_le32(metric + mpath->metric),
717 0, sdata);
718 mpath->sn = orig_sn;
719 }
720 rcu_read_unlock();
721}
599 722
600 723
601void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata, 724void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
@@ -614,34 +737,34 @@ void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
614 ieee802_11_parse_elems(mgmt->u.action.u.mesh_action.variable, 737 ieee802_11_parse_elems(mgmt->u.action.u.mesh_action.variable,
615 len - baselen, &elems); 738 len - baselen, &elems);
616 739
617 switch (mgmt->u.action.u.mesh_action.action_code) { 740 if (elems.preq) {
618 case MPATH_PREQ: 741 if (elems.preq_len != 37)
619 if (!elems.preq || elems.preq_len != 37)
620 /* Right now we support just 1 destination and no AE */ 742 /* Right now we support just 1 destination and no AE */
621 return; 743 return;
622 last_hop_metric = hwmp_route_info_get(sdata, mgmt, elems.preq); 744 last_hop_metric = hwmp_route_info_get(sdata, mgmt, elems.preq,
623 if (!last_hop_metric) 745 MPATH_PREQ);
624 return; 746 if (last_hop_metric)
625 hwmp_preq_frame_process(sdata, mgmt, elems.preq, last_hop_metric); 747 hwmp_preq_frame_process(sdata, mgmt, elems.preq,
626 break; 748 last_hop_metric);
627 case MPATH_PREP: 749 }
628 if (!elems.prep || elems.prep_len != 31) 750 if (elems.prep) {
751 if (elems.prep_len != 31)
629 /* Right now we support no AE */ 752 /* Right now we support no AE */
630 return; 753 return;
631 last_hop_metric = hwmp_route_info_get(sdata, mgmt, elems.prep); 754 last_hop_metric = hwmp_route_info_get(sdata, mgmt, elems.prep,
632 if (!last_hop_metric) 755 MPATH_PREP);
633 return; 756 if (last_hop_metric)
634 hwmp_prep_frame_process(sdata, mgmt, elems.prep, last_hop_metric); 757 hwmp_prep_frame_process(sdata, mgmt, elems.prep,
635 break; 758 last_hop_metric);
636 case MPATH_PERR: 759 }
637 if (!elems.perr || elems.perr_len != 12) 760 if (elems.perr) {
761 if (elems.perr_len != 15)
638 /* Right now we support only one destination per PERR */ 762 /* Right now we support only one destination per PERR */
639 return; 763 return;
640 hwmp_perr_frame_process(sdata, mgmt, elems.perr); 764 hwmp_perr_frame_process(sdata, mgmt, elems.perr);
641 default:
642 return;
643 } 765 }
644 766 if (elems.rann)
767 hwmp_rann_frame_process(sdata, mgmt, elems.rann);
645} 768}
646 769
647/** 770/**
@@ -661,7 +784,7 @@ static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
661 784
662 preq_node = kmalloc(sizeof(struct mesh_preq_queue), GFP_ATOMIC); 785 preq_node = kmalloc(sizeof(struct mesh_preq_queue), GFP_ATOMIC);
663 if (!preq_node) { 786 if (!preq_node) {
664 printk(KERN_DEBUG "Mesh HWMP: could not allocate PREQ node\n"); 787 mhwmp_dbg("could not allocate PREQ node\n");
665 return; 788 return;
666 } 789 }
667 790
@@ -670,7 +793,7 @@ static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
670 spin_unlock(&ifmsh->mesh_preq_queue_lock); 793 spin_unlock(&ifmsh->mesh_preq_queue_lock);
671 kfree(preq_node); 794 kfree(preq_node);
672 if (printk_ratelimit()) 795 if (printk_ratelimit())
673 printk(KERN_DEBUG "Mesh HWMP: PREQ node queue full\n"); 796 mhwmp_dbg("PREQ node queue full\n");
674 return; 797 return;
675 } 798 }
676 799
@@ -705,7 +828,7 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
705 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 828 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
706 struct mesh_preq_queue *preq_node; 829 struct mesh_preq_queue *preq_node;
707 struct mesh_path *mpath; 830 struct mesh_path *mpath;
708 u8 ttl, dst_flags; 831 u8 ttl, target_flags;
709 u32 lifetime; 832 u32 lifetime;
710 833
711 spin_lock_bh(&ifmsh->mesh_preq_queue_lock); 834 spin_lock_bh(&ifmsh->mesh_preq_queue_lock);
@@ -747,11 +870,11 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
747 870
748 ifmsh->last_preq = jiffies; 871 ifmsh->last_preq = jiffies;
749 872
750 if (time_after(jiffies, ifmsh->last_dsn_update + 873 if (time_after(jiffies, ifmsh->last_sn_update +
751 net_traversal_jiffies(sdata)) || 874 net_traversal_jiffies(sdata)) ||
752 time_before(jiffies, ifmsh->last_dsn_update)) { 875 time_before(jiffies, ifmsh->last_sn_update)) {
753 ++ifmsh->dsn; 876 ++ifmsh->sn;
754 sdata->u.mesh.last_dsn_update = jiffies; 877 sdata->u.mesh.last_sn_update = jiffies;
755 } 878 }
756 lifetime = default_lifetime(sdata); 879 lifetime = default_lifetime(sdata);
757 ttl = sdata->u.mesh.mshcfg.dot11MeshTTL; 880 ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
@@ -762,14 +885,14 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
762 } 885 }
763 886
764 if (preq_node->flags & PREQ_Q_F_REFRESH) 887 if (preq_node->flags & PREQ_Q_F_REFRESH)
765 dst_flags = MP_F_DO; 888 target_flags = MP_F_DO;
766 else 889 else
767 dst_flags = MP_F_RF; 890 target_flags = MP_F_RF;
768 891
769 spin_unlock_bh(&mpath->state_lock); 892 spin_unlock_bh(&mpath->state_lock);
770 mesh_path_sel_frame_tx(MPATH_PREQ, 0, sdata->dev->dev_addr, 893 mesh_path_sel_frame_tx(MPATH_PREQ, 0, sdata->dev->dev_addr,
771 cpu_to_le32(ifmsh->dsn), dst_flags, mpath->dst, 894 cpu_to_le32(ifmsh->sn), target_flags, mpath->dst,
772 cpu_to_le32(mpath->dsn), sdata->dev->broadcast, 0, 895 cpu_to_le32(mpath->sn), broadcast_addr, 0,
773 ttl, cpu_to_le32(lifetime), 0, 896 ttl, cpu_to_le32(lifetime), 0,
774 cpu_to_le32(ifmsh->preq_id++), sdata); 897 cpu_to_le32(ifmsh->preq_id++), sdata);
775 mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout); 898 mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout);
@@ -796,15 +919,15 @@ int mesh_nexthop_lookup(struct sk_buff *skb,
796 struct sk_buff *skb_to_free = NULL; 919 struct sk_buff *skb_to_free = NULL;
797 struct mesh_path *mpath; 920 struct mesh_path *mpath;
798 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; 921 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
799 u8 *dst_addr = hdr->addr3; 922 u8 *target_addr = hdr->addr3;
800 int err = 0; 923 int err = 0;
801 924
802 rcu_read_lock(); 925 rcu_read_lock();
803 mpath = mesh_path_lookup(dst_addr, sdata); 926 mpath = mesh_path_lookup(target_addr, sdata);
804 927
805 if (!mpath) { 928 if (!mpath) {
806 mesh_path_add(dst_addr, sdata); 929 mesh_path_add(target_addr, sdata);
807 mpath = mesh_path_lookup(dst_addr, sdata); 930 mpath = mesh_path_lookup(target_addr, sdata);
808 if (!mpath) { 931 if (!mpath) {
809 sdata->u.mesh.mshstats.dropped_frames_no_route++; 932 sdata->u.mesh.mshstats.dropped_frames_no_route++;
810 err = -ENOSPC; 933 err = -ENOSPC;
@@ -813,17 +936,16 @@ int mesh_nexthop_lookup(struct sk_buff *skb,
813 } 936 }
814 937
815 if (mpath->flags & MESH_PATH_ACTIVE) { 938 if (mpath->flags & MESH_PATH_ACTIVE) {
816 if (time_after(jiffies, mpath->exp_time + 939 if (time_after(jiffies,
817 msecs_to_jiffies(sdata->u.mesh.mshcfg.path_refresh_time)) 940 mpath->exp_time +
818 && !memcmp(sdata->dev->dev_addr, hdr->addr4, 941 msecs_to_jiffies(sdata->u.mesh.mshcfg.path_refresh_time)) &&
819 ETH_ALEN) 942 !memcmp(sdata->dev->dev_addr, hdr->addr4, ETH_ALEN) &&
820 && !(mpath->flags & MESH_PATH_RESOLVING) 943 !(mpath->flags & MESH_PATH_RESOLVING) &&
821 && !(mpath->flags & MESH_PATH_FIXED)) { 944 !(mpath->flags & MESH_PATH_FIXED)) {
822 mesh_queue_preq(mpath, 945 mesh_queue_preq(mpath,
823 PREQ_Q_F_START | PREQ_Q_F_REFRESH); 946 PREQ_Q_F_START | PREQ_Q_F_REFRESH);
824 } 947 }
825 memcpy(hdr->addr1, mpath->next_hop->sta.addr, 948 memcpy(hdr->addr1, mpath->next_hop->sta.addr, ETH_ALEN);
826 ETH_ALEN);
827 } else { 949 } else {
828 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 950 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
829 if (!(mpath->flags & MESH_PATH_RESOLVING)) { 951 if (!(mpath->flags & MESH_PATH_RESOLVING)) {
@@ -882,3 +1004,14 @@ void mesh_path_timer(unsigned long data)
882endmpathtimer: 1004endmpathtimer:
883 rcu_read_unlock(); 1005 rcu_read_unlock();
884} 1006}
1007
1008void
1009mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata)
1010{
1011 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1012
1013 mesh_path_sel_frame_tx(MPATH_RANN, 0, sdata->dev->dev_addr,
1014 cpu_to_le32(++ifmsh->sn),
1015 0, NULL, 0, broadcast_addr,
1016 0, MESH_TTL, 0, 0, 0, sdata);
1017}
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-27 11:03:09 -0400