ieee80211_amrr.c revision 1.3.18.3
1 1.3.18.3 phil /* $NetBSD: ieee80211_amrr.c,v 1.3.18.3 2018/07/16 20:11:11 phil Exp $ */ 2 1.3.18.2 phil 3 1.1 joerg /* $OpenBSD: ieee80211_amrr.c,v 1.1 2006/06/17 19:07:19 damien Exp $ */ 4 1.1 joerg 5 1.1 joerg /*- 6 1.3.18.1 phil * Copyright (c) 2010 Rui Paulo <rpaulo (at) FreeBSD.org> 7 1.1 joerg * Copyright (c) 2006 8 1.1 joerg * Damien Bergamini <damien.bergamini (at) free.fr> 9 1.1 joerg * 10 1.1 joerg * Permission to use, copy, modify, and distribute this software for any 11 1.1 joerg * purpose with or without fee is hereby granted, provided that the above 12 1.1 joerg * copyright notice and this permission notice appear in all copies. 13 1.1 joerg * 14 1.1 joerg * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 15 1.1 joerg * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 16 1.1 joerg * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 17 1.1 joerg * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 18 1.1 joerg * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 19 1.1 joerg * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 20 1.1 joerg * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 21 1.1 joerg */ 22 1.1 joerg 23 1.2 lukem #include <sys/cdefs.h> 24 1.3.18.2 phil #ifdef __FreeBSD__ 25 1.3.18.1 phil __FBSDID("$FreeBSD$"); 26 1.3.18.2 phil #endif 27 1.3 pooka 28 1.3.18.1 phil /*- 29 1.3.18.1 phil * Naive implementation of the Adaptive Multi Rate Retry algorithm: 30 1.3.18.1 phil * 31 1.3.18.1 phil * "IEEE 802.11 Rate Adaptation: A Practical Approach" 32 1.3.18.1 phil * Mathieu Lacage, Hossein Manshaei, Thierry Turletti 33 1.3.18.1 phil * INRIA Sophia - Projet Planete 34 1.3.18.1 phil * http://www-sop.inria.fr/rapports/sophia/RR-5208.html 35 1.3.18.1 phil */ 36 1.3.18.1 phil #include "opt_wlan.h" 37 1.2 lukem 38 1.1 joerg #include <sys/param.h> 39 1.1 joerg #include <sys/kernel.h> 40 1.3.18.1 phil #include <sys/malloc.h> 41 1.3.18.1 phil #include <sys/module.h> 42 1.3.18.1 phil #include <sys/sbuf.h> 43 1.1 joerg #include <sys/socket.h> 44 1.1 joerg #include <sys/sysctl.h> 45 1.1 joerg 46 1.1 joerg #include <net/if.h> 47 1.3.18.2 phil #ifdef __FreeBSD__ 48 1.3.18.1 phil #include <net/if_var.h> 49 1.3.18.2 phil #endif 50 1.1 joerg #include <net/if_media.h> 51 1.3.18.2 phil #ifdef __FreeBSD__ 52 1.3.18.1 phil #include <net/ethernet.h> 53 1.3.18.2 phil #endif 54 1.3.18.2 phil #ifdef __NetBSD__ 55 1.3.18.2 phil #include <net/route.h> 56 1.3.18.2 phil #endif 57 1.1 joerg 58 1.1 joerg #ifdef INET 59 1.1 joerg #include <netinet/in.h> 60 1.3.18.1 phil #include <netinet/if_ether.h> 61 1.1 joerg #endif 62 1.1 joerg 63 1.1 joerg #include <net80211/ieee80211_var.h> 64 1.3.18.1 phil #include <net80211/ieee80211_ht.h> 65 1.1 joerg #include <net80211/ieee80211_amrr.h> 66 1.3.18.1 phil #include <net80211/ieee80211_ratectl.h> 67 1.1 joerg 68 1.3.18.2 phil #ifdef __NetBSD__ 69 1.3.18.2 phil #undef KASSERT 70 1.3.18.2 phil #define KASSERT(__cond, __complaint) FBSDKASSERT(__cond, __complaint) 71 1.3.18.2 phil #endif 72 1.3.18.2 phil 73 1.1 joerg #define is_success(amn) \ 74 1.1 joerg ((amn)->amn_retrycnt < (amn)->amn_txcnt / 10) 75 1.1 joerg #define is_failure(amn) \ 76 1.1 joerg ((amn)->amn_retrycnt > (amn)->amn_txcnt / 3) 77 1.1 joerg #define is_enough(amn) \ 78 1.1 joerg ((amn)->amn_txcnt > 10) 79 1.3.18.1 phil 80 1.3.18.1 phil static void amrr_setinterval(const struct ieee80211vap *, int); 81 1.3.18.1 phil static void amrr_init(struct ieee80211vap *); 82 1.3.18.1 phil static void amrr_deinit(struct ieee80211vap *); 83 1.3.18.1 phil static void amrr_node_init(struct ieee80211_node *); 84 1.3.18.1 phil static void amrr_node_deinit(struct ieee80211_node *); 85 1.3.18.1 phil static int amrr_update(struct ieee80211_amrr *, 86 1.3.18.1 phil struct ieee80211_amrr_node *, struct ieee80211_node *); 87 1.3.18.1 phil static int amrr_rate(struct ieee80211_node *, void *, uint32_t); 88 1.3.18.1 phil static void amrr_tx_complete(const struct ieee80211_node *, 89 1.3.18.1 phil const struct ieee80211_ratectl_tx_status *); 90 1.3.18.1 phil static void amrr_tx_update_cb(void *, struct ieee80211_node *); 91 1.3.18.1 phil static void amrr_tx_update(struct ieee80211vap *vap, 92 1.3.18.1 phil struct ieee80211_ratectl_tx_stats *); 93 1.3.18.1 phil static void amrr_sysctlattach(struct ieee80211vap *, 94 1.3.18.1 phil struct sysctl_ctx_list *, struct sysctl_oid *); 95 1.3.18.1 phil static void amrr_node_stats(struct ieee80211_node *ni, struct sbuf *s); 96 1.3.18.1 phil 97 1.3.18.1 phil /* number of references from net80211 layer */ 98 1.3.18.1 phil static int nrefs = 0; 99 1.3.18.1 phil 100 1.3.18.3 phil #if __FreeBSD__ 101 1.3.18.1 phil static const struct ieee80211_ratectl amrr = { 102 1.3.18.2 phil #else 103 1.3.18.3 phil const struct ieee80211_ratectl ratectl_amrr = { 104 1.3.18.2 phil #endif 105 1.3.18.1 phil .ir_name = "amrr", 106 1.3.18.1 phil .ir_attach = NULL, 107 1.3.18.1 phil .ir_detach = NULL, 108 1.3.18.1 phil .ir_init = amrr_init, 109 1.3.18.1 phil .ir_deinit = amrr_deinit, 110 1.3.18.1 phil .ir_node_init = amrr_node_init, 111 1.3.18.1 phil .ir_node_deinit = amrr_node_deinit, 112 1.3.18.1 phil .ir_rate = amrr_rate, 113 1.3.18.1 phil .ir_tx_complete = amrr_tx_complete, 114 1.3.18.1 phil .ir_tx_update = amrr_tx_update, 115 1.3.18.1 phil .ir_setinterval = amrr_setinterval, 116 1.3.18.1 phil .ir_node_stats = amrr_node_stats, 117 1.3.18.1 phil }; 118 1.3.18.3 phil #if __FreeBSD__ 119 1.3.18.1 phil IEEE80211_RATECTL_MODULE(amrr, 1); 120 1.3.18.1 phil IEEE80211_RATECTL_ALG(amrr, IEEE80211_RATECTL_AMRR, amrr); 121 1.3.18.2 phil #endif 122 1.3.18.2 phil 123 1.3.18.1 phil static void 124 1.3.18.1 phil amrr_setinterval(const struct ieee80211vap *vap, int msecs) 125 1.3.18.1 phil { 126 1.3.18.1 phil struct ieee80211_amrr *amrr = vap->iv_rs; 127 1.3.18.1 phil int t; 128 1.3.18.1 phil 129 1.3.18.1 phil if (msecs < 100) 130 1.3.18.1 phil msecs = 100; 131 1.3.18.1 phil t = msecs_to_ticks(msecs); 132 1.3.18.1 phil amrr->amrr_interval = (t < 1) ? 1 : t; 133 1.3.18.1 phil } 134 1.3.18.1 phil 135 1.3.18.1 phil static void 136 1.3.18.1 phil amrr_init(struct ieee80211vap *vap) 137 1.3.18.1 phil { 138 1.3.18.1 phil struct ieee80211_amrr *amrr; 139 1.3.18.1 phil 140 1.3.18.1 phil KASSERT(vap->iv_rs == NULL, ("%s called multiple times", __func__)); 141 1.3.18.1 phil 142 1.3.18.1 phil nrefs++; /* XXX locking */ 143 1.3.18.1 phil amrr = vap->iv_rs = IEEE80211_MALLOC(sizeof(struct ieee80211_amrr), 144 1.3.18.1 phil M_80211_RATECTL, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); 145 1.3.18.1 phil if (amrr == NULL) { 146 1.3.18.1 phil if_printf(vap->iv_ifp, "couldn't alloc ratectl structure\n"); 147 1.3.18.1 phil return; 148 1.3.18.1 phil } 149 1.3.18.1 phil amrr->amrr_min_success_threshold = IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD; 150 1.3.18.1 phil amrr->amrr_max_success_threshold = IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD; 151 1.3.18.1 phil amrr_setinterval(vap, 500 /* ms */); 152 1.3.18.1 phil amrr_sysctlattach(vap, vap->iv_sysctl, vap->iv_oid); 153 1.3.18.1 phil } 154 1.3.18.1 phil 155 1.3.18.1 phil static void 156 1.3.18.1 phil amrr_deinit(struct ieee80211vap *vap) 157 1.3.18.1 phil { 158 1.3.18.1 phil IEEE80211_FREE(vap->iv_rs, M_80211_RATECTL); 159 1.3.18.1 phil KASSERT(nrefs > 0, ("imbalanced attach/detach")); 160 1.3.18.1 phil nrefs--; /* XXX locking */ 161 1.3.18.1 phil } 162 1.3.18.1 phil 163 1.3.18.1 phil /* 164 1.3.18.1 phil * Return whether 11n rates are possible. 165 1.3.18.1 phil * 166 1.3.18.1 phil * Some 11n devices may return HT information but no HT rates. 167 1.3.18.1 phil * Thus, we shouldn't treat them as an 11n node. 168 1.3.18.1 phil */ 169 1.3.18.1 phil static int 170 1.3.18.1 phil amrr_node_is_11n(struct ieee80211_node *ni) 171 1.3.18.1 phil { 172 1.3.18.1 phil 173 1.3.18.1 phil if (ni->ni_chan == NULL) 174 1.3.18.1 phil return (0); 175 1.3.18.1 phil if (ni->ni_chan == IEEE80211_CHAN_ANYC) 176 1.3.18.1 phil return (0); 177 1.3.18.1 phil if (IEEE80211_IS_CHAN_HT(ni->ni_chan) && ni->ni_htrates.rs_nrates == 0) 178 1.3.18.1 phil return (0); 179 1.3.18.1 phil return (IEEE80211_IS_CHAN_HT(ni->ni_chan)); 180 1.3.18.1 phil } 181 1.3.18.1 phil 182 1.3.18.1 phil static void 183 1.3.18.1 phil amrr_node_init(struct ieee80211_node *ni) 184 1.1 joerg { 185 1.3.18.1 phil const struct ieee80211_rateset *rs = NULL; 186 1.3.18.1 phil struct ieee80211vap *vap = ni->ni_vap; 187 1.3.18.1 phil struct ieee80211_amrr *amrr = vap->iv_rs; 188 1.3.18.1 phil struct ieee80211_amrr_node *amn; 189 1.3.18.1 phil uint8_t rate; 190 1.3.18.1 phil 191 1.3.18.1 phil if (ni->ni_rctls == NULL) { 192 1.3.18.1 phil ni->ni_rctls = amn = IEEE80211_MALLOC(sizeof(struct ieee80211_amrr_node), 193 1.3.18.1 phil M_80211_RATECTL, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); 194 1.3.18.1 phil if (amn == NULL) { 195 1.3.18.1 phil if_printf(vap->iv_ifp, "couldn't alloc per-node ratectl " 196 1.3.18.1 phil "structure\n"); 197 1.3.18.1 phil return; 198 1.3.18.1 phil } 199 1.3.18.1 phil } else 200 1.3.18.1 phil amn = ni->ni_rctls; 201 1.3.18.1 phil amn->amn_amrr = amrr; 202 1.1 joerg amn->amn_success = 0; 203 1.1 joerg amn->amn_recovery = 0; 204 1.1 joerg amn->amn_txcnt = amn->amn_retrycnt = 0; 205 1.1 joerg amn->amn_success_threshold = amrr->amrr_min_success_threshold; 206 1.3.18.1 phil 207 1.3.18.1 phil /* 11n or not? Pick the right rateset */ 208 1.3.18.1 phil if (amrr_node_is_11n(ni)) { 209 1.3.18.1 phil /* XXX ew */ 210 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 211 1.3.18.1 phil "%s: 11n node", __func__); 212 1.3.18.1 phil rs = (struct ieee80211_rateset *) &ni->ni_htrates; 213 1.3.18.1 phil } else { 214 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 215 1.3.18.1 phil "%s: non-11n node", __func__); 216 1.3.18.1 phil rs = &ni->ni_rates; 217 1.3.18.1 phil } 218 1.3.18.1 phil 219 1.3.18.1 phil /* Initial rate - lowest */ 220 1.3.18.1 phil rate = rs->rs_rates[0]; 221 1.3.18.1 phil 222 1.3.18.1 phil /* XXX clear the basic rate flag if it's not 11n */ 223 1.3.18.1 phil if (! amrr_node_is_11n(ni)) 224 1.3.18.1 phil rate &= IEEE80211_RATE_VAL; 225 1.3.18.1 phil 226 1.3.18.1 phil /* pick initial rate from the rateset - HT or otherwise */ 227 1.3.18.1 phil /* Pick something low that's likely to succeed */ 228 1.3.18.1 phil for (amn->amn_rix = rs->rs_nrates - 1; amn->amn_rix > 0; 229 1.3.18.1 phil amn->amn_rix--) { 230 1.3.18.1 phil /* legacy - anything < 36mbit, stop searching */ 231 1.3.18.1 phil /* 11n - stop at MCS4 */ 232 1.3.18.1 phil if (amrr_node_is_11n(ni)) { 233 1.3.18.1 phil if ((rs->rs_rates[amn->amn_rix] & 0x1f) < 4) 234 1.3.18.1 phil break; 235 1.3.18.1 phil } else if ((rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL) <= 72) 236 1.3.18.1 phil break; 237 1.3.18.1 phil } 238 1.3.18.1 phil rate = rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL; 239 1.3.18.1 phil 240 1.3.18.1 phil /* if the rate is an 11n rate, ensure the MCS bit is set */ 241 1.3.18.1 phil if (amrr_node_is_11n(ni)) 242 1.3.18.1 phil rate |= IEEE80211_RATE_MCS; 243 1.3.18.1 phil 244 1.3.18.1 phil /* Assign initial rate from the rateset */ 245 1.3.18.1 phil ni->ni_txrate = rate; 246 1.3.18.1 phil amn->amn_ticks = ticks; 247 1.3.18.1 phil 248 1.3.18.1 phil /* XXX TODO: we really need a rate-to-string method */ 249 1.3.18.1 phil /* XXX TODO: non-11n rate should be divided by two.. */ 250 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 251 1.3.18.1 phil "AMRR: nrates=%d, initial rate %s%d", 252 1.3.18.1 phil rs->rs_nrates, 253 1.3.18.1 phil amrr_node_is_11n(ni) ? "MCS " : "", 254 1.3.18.1 phil rate & IEEE80211_RATE_VAL); 255 1.1 joerg } 256 1.1 joerg 257 1.3.18.1 phil static void 258 1.3.18.1 phil amrr_node_deinit(struct ieee80211_node *ni) 259 1.1 joerg { 260 1.3.18.1 phil IEEE80211_FREE(ni->ni_rctls, M_80211_RATECTL); 261 1.3.18.1 phil } 262 1.3.18.1 phil 263 1.3.18.1 phil static int 264 1.3.18.1 phil amrr_update(struct ieee80211_amrr *amrr, struct ieee80211_amrr_node *amn, 265 1.3.18.1 phil struct ieee80211_node *ni) 266 1.3.18.1 phil { 267 1.3.18.1 phil int rix = amn->amn_rix; 268 1.3.18.1 phil const struct ieee80211_rateset *rs = NULL; 269 1.3.18.1 phil 270 1.3.18.1 phil KASSERT(is_enough(amn), ("txcnt %d", amn->amn_txcnt)); 271 1.3.18.1 phil 272 1.3.18.1 phil /* 11n or not? Pick the right rateset */ 273 1.3.18.1 phil if (amrr_node_is_11n(ni)) { 274 1.3.18.1 phil /* XXX ew */ 275 1.3.18.1 phil rs = (struct ieee80211_rateset *) &ni->ni_htrates; 276 1.3.18.1 phil } else { 277 1.3.18.1 phil rs = &ni->ni_rates; 278 1.3.18.1 phil } 279 1.1 joerg 280 1.3.18.1 phil /* XXX TODO: we really need a rate-to-string method */ 281 1.3.18.1 phil /* XXX TODO: non-11n rate should be divided by two.. */ 282 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 283 1.3.18.1 phil "AMRR: current rate %d, txcnt=%d, retrycnt=%d", 284 1.3.18.1 phil rs->rs_rates[rix] & IEEE80211_RATE_VAL, 285 1.3.18.1 phil amn->amn_txcnt, 286 1.3.18.1 phil amn->amn_retrycnt); 287 1.3.18.1 phil 288 1.3.18.1 phil /* 289 1.3.18.1 phil * XXX This is totally bogus for 11n, as although high MCS 290 1.3.18.1 phil * rates for each stream may be failing, the next stream 291 1.3.18.1 phil * should be checked. 292 1.3.18.1 phil * 293 1.3.18.1 phil * Eg, if MCS5 is ok but MCS6/7 isn't, and we can go up to 294 1.3.18.1 phil * MCS23, we should skip 6/7 and try 8 onwards. 295 1.3.18.1 phil */ 296 1.3.18.1 phil if (is_success(amn)) { 297 1.1 joerg amn->amn_success++; 298 1.1 joerg if (amn->amn_success >= amn->amn_success_threshold && 299 1.3.18.1 phil rix + 1 < rs->rs_nrates) { 300 1.1 joerg amn->amn_recovery = 1; 301 1.1 joerg amn->amn_success = 0; 302 1.3.18.1 phil rix++; 303 1.3.18.1 phil /* XXX TODO: we really need a rate-to-string method */ 304 1.3.18.1 phil /* XXX TODO: non-11n rate should be divided by two.. */ 305 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 306 1.3.18.1 phil "AMRR increasing rate %d (txcnt=%d retrycnt=%d)", 307 1.3.18.1 phil rs->rs_rates[rix] & IEEE80211_RATE_VAL, 308 1.1 joerg amn->amn_txcnt, amn->amn_retrycnt); 309 1.1 joerg } else { 310 1.1 joerg amn->amn_recovery = 0; 311 1.1 joerg } 312 1.1 joerg } else if (is_failure(amn)) { 313 1.1 joerg amn->amn_success = 0; 314 1.3.18.1 phil if (rix > 0) { 315 1.1 joerg if (amn->amn_recovery) { 316 1.1 joerg amn->amn_success_threshold *= 2; 317 1.1 joerg if (amn->amn_success_threshold > 318 1.1 joerg amrr->amrr_max_success_threshold) 319 1.1 joerg amn->amn_success_threshold = 320 1.1 joerg amrr->amrr_max_success_threshold; 321 1.1 joerg } else { 322 1.1 joerg amn->amn_success_threshold = 323 1.1 joerg amrr->amrr_min_success_threshold; 324 1.1 joerg } 325 1.3.18.1 phil rix--; 326 1.3.18.1 phil /* XXX TODO: we really need a rate-to-string method */ 327 1.3.18.1 phil /* XXX TODO: non-11n rate should be divided by two.. */ 328 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 329 1.3.18.1 phil "AMRR decreasing rate %d (txcnt=%d retrycnt=%d)", 330 1.3.18.1 phil rs->rs_rates[rix] & IEEE80211_RATE_VAL, 331 1.1 joerg amn->amn_txcnt, amn->amn_retrycnt); 332 1.1 joerg } 333 1.1 joerg amn->amn_recovery = 0; 334 1.1 joerg } 335 1.1 joerg 336 1.3.18.1 phil /* reset counters */ 337 1.3.18.1 phil amn->amn_txcnt = 0; 338 1.3.18.1 phil amn->amn_retrycnt = 0; 339 1.3.18.1 phil 340 1.3.18.1 phil return rix; 341 1.3.18.1 phil } 342 1.3.18.1 phil 343 1.3.18.1 phil /* 344 1.3.18.1 phil * Return the rate index to use in sending a data frame. 345 1.3.18.1 phil * Update our internal state if it's been long enough. 346 1.3.18.1 phil * If the rate changes we also update ni_txrate to match. 347 1.3.18.1 phil */ 348 1.3.18.1 phil static int 349 1.3.18.1 phil amrr_rate(struct ieee80211_node *ni, void *arg __unused, uint32_t iarg __unused) 350 1.3.18.1 phil { 351 1.3.18.1 phil struct ieee80211_amrr_node *amn = ni->ni_rctls; 352 1.3.18.1 phil struct ieee80211_amrr *amrr = amn->amn_amrr; 353 1.3.18.1 phil const struct ieee80211_rateset *rs = NULL; 354 1.3.18.1 phil int rix; 355 1.3.18.1 phil 356 1.3.18.1 phil /* 11n or not? Pick the right rateset */ 357 1.3.18.1 phil if (amrr_node_is_11n(ni)) { 358 1.3.18.1 phil /* XXX ew */ 359 1.3.18.1 phil rs = (struct ieee80211_rateset *) &ni->ni_htrates; 360 1.3.18.1 phil } else { 361 1.3.18.1 phil rs = &ni->ni_rates; 362 1.3.18.1 phil } 363 1.3.18.1 phil 364 1.3.18.1 phil if (is_enough(amn) && (ticks - amn->amn_ticks) > amrr->amrr_interval) { 365 1.3.18.1 phil rix = amrr_update(amrr, amn, ni); 366 1.3.18.1 phil if (rix != amn->amn_rix) { 367 1.3.18.1 phil /* update public rate */ 368 1.3.18.1 phil ni->ni_txrate = rs->rs_rates[rix]; 369 1.3.18.1 phil /* XXX strip basic rate flag from txrate, if non-11n */ 370 1.3.18.1 phil if (amrr_node_is_11n(ni)) 371 1.3.18.1 phil ni->ni_txrate |= IEEE80211_RATE_MCS; 372 1.3.18.1 phil else 373 1.3.18.1 phil ni->ni_txrate &= IEEE80211_RATE_VAL; 374 1.3.18.1 phil amn->amn_rix = rix; 375 1.3.18.1 phil } 376 1.3.18.1 phil amn->amn_ticks = ticks; 377 1.3.18.1 phil } else 378 1.3.18.1 phil rix = amn->amn_rix; 379 1.3.18.1 phil return rix; 380 1.3.18.1 phil } 381 1.3.18.1 phil 382 1.3.18.1 phil /* 383 1.3.18.1 phil * Update statistics with tx complete status. Ok is non-zero 384 1.3.18.1 phil * if the packet is known to be ACK'd. Retries has the number 385 1.3.18.1 phil * retransmissions (i.e. xmit attempts - 1). 386 1.3.18.1 phil */ 387 1.3.18.1 phil static void 388 1.3.18.1 phil amrr_tx_complete(const struct ieee80211_node *ni, 389 1.3.18.1 phil const struct ieee80211_ratectl_tx_status *status) 390 1.3.18.1 phil { 391 1.3.18.1 phil struct ieee80211_amrr_node *amn = ni->ni_rctls; 392 1.3.18.1 phil int retries; 393 1.3.18.1 phil 394 1.3.18.1 phil retries = 0; 395 1.3.18.1 phil if (status->flags & IEEE80211_RATECTL_STATUS_LONG_RETRY) 396 1.3.18.1 phil retries = status->long_retries; 397 1.3.18.1 phil 398 1.3.18.1 phil amn->amn_txcnt++; 399 1.3.18.1 phil if (status->status == IEEE80211_RATECTL_TX_SUCCESS) 400 1.3.18.1 phil amn->amn_success++; 401 1.3.18.1 phil amn->amn_retrycnt += retries; 402 1.3.18.1 phil } 403 1.3.18.1 phil 404 1.3.18.1 phil static void 405 1.3.18.1 phil amrr_tx_update_cb(void *arg, struct ieee80211_node *ni) 406 1.3.18.1 phil { 407 1.3.18.1 phil struct ieee80211_ratectl_tx_stats *stats = arg; 408 1.3.18.1 phil struct ieee80211_amrr_node *amn = ni->ni_rctls; 409 1.3.18.1 phil int txcnt, success, retrycnt; 410 1.3.18.1 phil 411 1.3.18.1 phil txcnt = stats->nframes; 412 1.3.18.1 phil success = stats->nsuccess; 413 1.3.18.1 phil retrycnt = 0; 414 1.3.18.1 phil if (stats->flags & IEEE80211_RATECTL_TX_STATS_RETRIES) 415 1.3.18.1 phil retrycnt = stats->nretries; 416 1.3.18.1 phil 417 1.3.18.1 phil amn->amn_txcnt += txcnt; 418 1.3.18.1 phil amn->amn_success += success; 419 1.3.18.1 phil amn->amn_retrycnt += retrycnt; 420 1.3.18.1 phil } 421 1.3.18.1 phil 422 1.3.18.1 phil /* 423 1.3.18.1 phil * Set tx count/retry statistics explicitly. Intended for 424 1.3.18.1 phil * drivers that poll the device for statistics maintained 425 1.3.18.1 phil * in the device. 426 1.3.18.1 phil */ 427 1.3.18.1 phil static void 428 1.3.18.1 phil amrr_tx_update(struct ieee80211vap *vap, 429 1.3.18.1 phil struct ieee80211_ratectl_tx_stats *stats) 430 1.3.18.1 phil { 431 1.3.18.1 phil 432 1.3.18.1 phil if (stats->flags & IEEE80211_RATECTL_TX_STATS_NODE) 433 1.3.18.1 phil amrr_tx_update_cb(stats, stats->ni); 434 1.3.18.1 phil else { 435 1.3.18.1 phil ieee80211_iterate_nodes_vap(&vap->iv_ic->ic_sta, vap, 436 1.3.18.1 phil amrr_tx_update_cb, stats); 437 1.3.18.1 phil } 438 1.3.18.1 phil } 439 1.3.18.1 phil 440 1.3.18.2 phil #ifdef notyet 441 1.3.18.1 phil static int 442 1.3.18.1 phil amrr_sysctl_interval(SYSCTL_HANDLER_ARGS) 443 1.3.18.1 phil { 444 1.3.18.1 phil struct ieee80211vap *vap = arg1; 445 1.3.18.1 phil struct ieee80211_amrr *amrr = vap->iv_rs; 446 1.3.18.1 phil int msecs = ticks_to_msecs(amrr->amrr_interval); 447 1.3.18.1 phil int error; 448 1.3.18.1 phil 449 1.3.18.1 phil error = sysctl_handle_int(oidp, &msecs, 0, req); 450 1.3.18.1 phil if (error || !req->newptr) 451 1.3.18.1 phil return error; 452 1.3.18.1 phil amrr_setinterval(vap, msecs); 453 1.3.18.1 phil return 0; 454 1.3.18.1 phil } 455 1.3.18.2 phil #endif 456 1.3.18.1 phil 457 1.3.18.1 phil static void 458 1.3.18.1 phil amrr_sysctlattach(struct ieee80211vap *vap, 459 1.3.18.1 phil struct sysctl_ctx_list *ctx, struct sysctl_oid *tree) 460 1.3.18.1 phil { 461 1.3.18.2 phil #ifdef notyet 462 1.3.18.1 phil struct ieee80211_amrr *amrr = vap->iv_rs; 463 1.3.18.1 phil 464 1.3.18.1 phil SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 465 1.3.18.1 phil "amrr_rate_interval", CTLTYPE_INT | CTLFLAG_RW, vap, 466 1.3.18.1 phil 0, amrr_sysctl_interval, "I", "amrr operation interval (ms)"); 467 1.3.18.1 phil /* XXX bounds check values */ 468 1.3.18.1 phil SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 469 1.3.18.1 phil "amrr_max_sucess_threshold", CTLFLAG_RW, 470 1.3.18.1 phil &amrr->amrr_max_success_threshold, 0, ""); 471 1.3.18.1 phil SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 472 1.3.18.1 phil "amrr_min_sucess_threshold", CTLFLAG_RW, 473 1.3.18.1 phil &amrr->amrr_min_success_threshold, 0, ""); 474 1.3.18.2 phil #endif 475 1.3.18.1 phil } 476 1.3.18.1 phil 477 1.3.18.1 phil static void 478 1.3.18.1 phil amrr_node_stats(struct ieee80211_node *ni, struct sbuf *s) 479 1.3.18.1 phil { 480 1.3.18.1 phil int rate; 481 1.3.18.1 phil struct ieee80211_amrr_node *amn = ni->ni_rctls; 482 1.3.18.1 phil struct ieee80211_rateset *rs; 483 1.3.18.1 phil 484 1.3.18.1 phil /* XXX TODO: check locking? */ 485 1.3.18.1 phil 486 1.3.18.1 phil /* XXX TODO: this should be a method */ 487 1.3.18.1 phil if (amrr_node_is_11n(ni)) { 488 1.3.18.1 phil rs = (struct ieee80211_rateset *) &ni->ni_htrates; 489 1.3.18.1 phil rate = rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL; 490 1.3.18.1 phil sbuf_printf(s, "rate: MCS %d\n", rate); 491 1.3.18.1 phil } else { 492 1.3.18.1 phil rs = &ni->ni_rates; 493 1.3.18.1 phil rate = rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL; 494 1.3.18.1 phil sbuf_printf(s, "rate: %d Mbit\n", rate / 2); 495 1.3.18.1 phil } 496 1.3.18.1 phil 497 1.3.18.1 phil sbuf_printf(s, "ticks: %d\n", amn->amn_ticks); 498 1.3.18.1 phil sbuf_printf(s, "txcnt: %u\n", amn->amn_txcnt); 499 1.3.18.1 phil sbuf_printf(s, "success: %u\n", amn->amn_success); 500 1.3.18.1 phil sbuf_printf(s, "success_threshold: %u\n", amn->amn_success_threshold); 501 1.3.18.1 phil sbuf_printf(s, "recovery: %u\n", amn->amn_recovery); 502 1.3.18.1 phil sbuf_printf(s, "retry_cnt: %u\n", amn->amn_retrycnt); 503 1.1 joerg } 504 1.3.18.2 phil 505
Indexes created Fri Oct 03 02:09:57 GMT 2025