ieee80211_amrr.c revision 1.3.18.5
1 1.3.18.5 christos /* $NetBSD: ieee80211_amrr.c,v 1.3.18.5 2019/06/10 22:09:46 christos 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 1.3.18.5 christos #ifdef __NetBSD__ 25 1.3.18.5 christos __KERNEL_RCSID(0, "$NetBSD: ieee80211_amrr.c,v 1.3.18.5 2019/06/10 22:09:46 christos Exp $"); 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 1.3.18.5 christos #ifdef _KERNEL_OPT 37 1.3.18.1 phil #include "opt_wlan.h" 38 1.3.18.5 christos #endif 39 1.2 lukem 40 1.1 joerg #include <sys/param.h> 41 1.1 joerg #include <sys/kernel.h> 42 1.3.18.1 phil #include <sys/malloc.h> 43 1.3.18.1 phil #include <sys/module.h> 44 1.3.18.1 phil #include <sys/sbuf.h> 45 1.1 joerg #include <sys/socket.h> 46 1.1 joerg #include <sys/sysctl.h> 47 1.1 joerg 48 1.1 joerg #include <net/if.h> 49 1.3.18.2 phil #ifdef __FreeBSD__ 50 1.3.18.1 phil #include <net/if_var.h> 51 1.3.18.2 phil #endif 52 1.1 joerg #include <net/if_media.h> 53 1.3.18.2 phil #ifdef __FreeBSD__ 54 1.3.18.1 phil #include <net/ethernet.h> 55 1.3.18.2 phil #endif 56 1.3.18.2 phil #ifdef __NetBSD__ 57 1.3.18.2 phil #include <net/route.h> 58 1.3.18.2 phil #endif 59 1.1 joerg 60 1.1 joerg #ifdef INET 61 1.1 joerg #include <netinet/in.h> 62 1.3.18.5 christos #ifdef __FreeBSD__ 63 1.3.18.1 phil #include <netinet/if_ether.h> 64 1.1 joerg #endif 65 1.3.18.5 christos #endif 66 1.1 joerg 67 1.1 joerg #include <net80211/ieee80211_var.h> 68 1.3.18.1 phil #include <net80211/ieee80211_ht.h> 69 1.1 joerg #include <net80211/ieee80211_amrr.h> 70 1.3.18.1 phil #include <net80211/ieee80211_ratectl.h> 71 1.1 joerg 72 1.3.18.2 phil #ifdef __NetBSD__ 73 1.3.18.2 phil #undef KASSERT 74 1.3.18.2 phil #define KASSERT(__cond, __complaint) FBSDKASSERT(__cond, __complaint) 75 1.3.18.2 phil #endif 76 1.3.18.2 phil 77 1.1 joerg #define is_success(amn) \ 78 1.1 joerg ((amn)->amn_retrycnt < (amn)->amn_txcnt / 10) 79 1.1 joerg #define is_failure(amn) \ 80 1.1 joerg ((amn)->amn_retrycnt > (amn)->amn_txcnt / 3) 81 1.1 joerg #define is_enough(amn) \ 82 1.1 joerg ((amn)->amn_txcnt > 10) 83 1.3.18.1 phil 84 1.3.18.1 phil static void amrr_setinterval(const struct ieee80211vap *, int); 85 1.3.18.1 phil static void amrr_init(struct ieee80211vap *); 86 1.3.18.1 phil static void amrr_deinit(struct ieee80211vap *); 87 1.3.18.1 phil static void amrr_node_init(struct ieee80211_node *); 88 1.3.18.1 phil static void amrr_node_deinit(struct ieee80211_node *); 89 1.3.18.1 phil static int amrr_update(struct ieee80211_amrr *, 90 1.3.18.1 phil struct ieee80211_amrr_node *, struct ieee80211_node *); 91 1.3.18.1 phil static int amrr_rate(struct ieee80211_node *, void *, uint32_t); 92 1.3.18.1 phil static void amrr_tx_complete(const struct ieee80211_node *, 93 1.3.18.1 phil const struct ieee80211_ratectl_tx_status *); 94 1.3.18.1 phil static void amrr_tx_update_cb(void *, struct ieee80211_node *); 95 1.3.18.1 phil static void amrr_tx_update(struct ieee80211vap *vap, 96 1.3.18.1 phil struct ieee80211_ratectl_tx_stats *); 97 1.3.18.4 phil #ifdef notyet 98 1.3.18.1 phil static void amrr_sysctlattach(struct ieee80211vap *, 99 1.3.18.1 phil struct sysctl_ctx_list *, struct sysctl_oid *); 100 1.3.18.4 phil #endif 101 1.3.18.1 phil static void amrr_node_stats(struct ieee80211_node *ni, struct sbuf *s); 102 1.3.18.1 phil 103 1.3.18.1 phil /* number of references from net80211 layer */ 104 1.3.18.1 phil static int nrefs = 0; 105 1.3.18.1 phil 106 1.3.18.3 phil #if __FreeBSD__ 107 1.3.18.1 phil static const struct ieee80211_ratectl amrr = { 108 1.3.18.2 phil #else 109 1.3.18.3 phil const struct ieee80211_ratectl ratectl_amrr = { 110 1.3.18.2 phil #endif 111 1.3.18.1 phil .ir_name = "amrr", 112 1.3.18.1 phil .ir_attach = NULL, 113 1.3.18.1 phil .ir_detach = NULL, 114 1.3.18.1 phil .ir_init = amrr_init, 115 1.3.18.1 phil .ir_deinit = amrr_deinit, 116 1.3.18.1 phil .ir_node_init = amrr_node_init, 117 1.3.18.1 phil .ir_node_deinit = amrr_node_deinit, 118 1.3.18.1 phil .ir_rate = amrr_rate, 119 1.3.18.1 phil .ir_tx_complete = amrr_tx_complete, 120 1.3.18.1 phil .ir_tx_update = amrr_tx_update, 121 1.3.18.1 phil .ir_setinterval = amrr_setinterval, 122 1.3.18.1 phil .ir_node_stats = amrr_node_stats, 123 1.3.18.1 phil }; 124 1.3.18.3 phil #if __FreeBSD__ 125 1.3.18.1 phil IEEE80211_RATECTL_MODULE(amrr, 1); 126 1.3.18.1 phil IEEE80211_RATECTL_ALG(amrr, IEEE80211_RATECTL_AMRR, amrr); 127 1.3.18.2 phil #endif 128 1.3.18.2 phil 129 1.3.18.1 phil static void 130 1.3.18.1 phil amrr_setinterval(const struct ieee80211vap *vap, int msecs) 131 1.3.18.1 phil { 132 1.3.18.1 phil struct ieee80211_amrr *amrr = vap->iv_rs; 133 1.3.18.1 phil int t; 134 1.3.18.1 phil 135 1.3.18.1 phil if (msecs < 100) 136 1.3.18.1 phil msecs = 100; 137 1.3.18.1 phil t = msecs_to_ticks(msecs); 138 1.3.18.1 phil amrr->amrr_interval = (t < 1) ? 1 : t; 139 1.3.18.1 phil } 140 1.3.18.1 phil 141 1.3.18.1 phil static void 142 1.3.18.1 phil amrr_init(struct ieee80211vap *vap) 143 1.3.18.1 phil { 144 1.3.18.1 phil struct ieee80211_amrr *amrr; 145 1.3.18.1 phil 146 1.3.18.1 phil KASSERT(vap->iv_rs == NULL, ("%s called multiple times", __func__)); 147 1.3.18.1 phil 148 1.3.18.1 phil nrefs++; /* XXX locking */ 149 1.3.18.1 phil amrr = vap->iv_rs = IEEE80211_MALLOC(sizeof(struct ieee80211_amrr), 150 1.3.18.1 phil M_80211_RATECTL, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); 151 1.3.18.1 phil if (amrr == NULL) { 152 1.3.18.1 phil if_printf(vap->iv_ifp, "couldn't alloc ratectl structure\n"); 153 1.3.18.1 phil return; 154 1.3.18.1 phil } 155 1.3.18.1 phil amrr->amrr_min_success_threshold = IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD; 156 1.3.18.1 phil amrr->amrr_max_success_threshold = IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD; 157 1.3.18.1 phil amrr_setinterval(vap, 500 /* ms */); 158 1.3.18.4 phil #ifdef notyet 159 1.3.18.1 phil amrr_sysctlattach(vap, vap->iv_sysctl, vap->iv_oid); 160 1.3.18.4 phil #endif 161 1.3.18.1 phil } 162 1.3.18.1 phil 163 1.3.18.1 phil static void 164 1.3.18.1 phil amrr_deinit(struct ieee80211vap *vap) 165 1.3.18.1 phil { 166 1.3.18.1 phil IEEE80211_FREE(vap->iv_rs, M_80211_RATECTL); 167 1.3.18.1 phil KASSERT(nrefs > 0, ("imbalanced attach/detach")); 168 1.3.18.1 phil nrefs--; /* XXX locking */ 169 1.3.18.1 phil } 170 1.3.18.1 phil 171 1.3.18.1 phil /* 172 1.3.18.1 phil * Return whether 11n rates are possible. 173 1.3.18.1 phil * 174 1.3.18.1 phil * Some 11n devices may return HT information but no HT rates. 175 1.3.18.1 phil * Thus, we shouldn't treat them as an 11n node. 176 1.3.18.1 phil */ 177 1.3.18.1 phil static int 178 1.3.18.1 phil amrr_node_is_11n(struct ieee80211_node *ni) 179 1.3.18.1 phil { 180 1.3.18.1 phil 181 1.3.18.1 phil if (ni->ni_chan == NULL) 182 1.3.18.1 phil return (0); 183 1.3.18.1 phil if (ni->ni_chan == IEEE80211_CHAN_ANYC) 184 1.3.18.1 phil return (0); 185 1.3.18.1 phil if (IEEE80211_IS_CHAN_HT(ni->ni_chan) && ni->ni_htrates.rs_nrates == 0) 186 1.3.18.1 phil return (0); 187 1.3.18.1 phil return (IEEE80211_IS_CHAN_HT(ni->ni_chan)); 188 1.3.18.1 phil } 189 1.3.18.1 phil 190 1.3.18.1 phil static void 191 1.3.18.1 phil amrr_node_init(struct ieee80211_node *ni) 192 1.1 joerg { 193 1.3.18.1 phil const struct ieee80211_rateset *rs = NULL; 194 1.3.18.1 phil struct ieee80211vap *vap = ni->ni_vap; 195 1.3.18.1 phil struct ieee80211_amrr *amrr = vap->iv_rs; 196 1.3.18.1 phil struct ieee80211_amrr_node *amn; 197 1.3.18.1 phil uint8_t rate; 198 1.3.18.1 phil 199 1.3.18.1 phil if (ni->ni_rctls == NULL) { 200 1.3.18.1 phil ni->ni_rctls = amn = IEEE80211_MALLOC(sizeof(struct ieee80211_amrr_node), 201 1.3.18.1 phil M_80211_RATECTL, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); 202 1.3.18.1 phil if (amn == NULL) { 203 1.3.18.1 phil if_printf(vap->iv_ifp, "couldn't alloc per-node ratectl " 204 1.3.18.1 phil "structure\n"); 205 1.3.18.1 phil return; 206 1.3.18.1 phil } 207 1.3.18.1 phil } else 208 1.3.18.1 phil amn = ni->ni_rctls; 209 1.3.18.1 phil amn->amn_amrr = amrr; 210 1.1 joerg amn->amn_success = 0; 211 1.1 joerg amn->amn_recovery = 0; 212 1.1 joerg amn->amn_txcnt = amn->amn_retrycnt = 0; 213 1.1 joerg amn->amn_success_threshold = amrr->amrr_min_success_threshold; 214 1.3.18.1 phil 215 1.3.18.1 phil /* 11n or not? Pick the right rateset */ 216 1.3.18.1 phil if (amrr_node_is_11n(ni)) { 217 1.3.18.1 phil /* XXX ew */ 218 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 219 1.3.18.1 phil "%s: 11n node", __func__); 220 1.3.18.1 phil rs = (struct ieee80211_rateset *) &ni->ni_htrates; 221 1.3.18.1 phil } else { 222 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 223 1.3.18.1 phil "%s: non-11n node", __func__); 224 1.3.18.1 phil rs = &ni->ni_rates; 225 1.3.18.1 phil } 226 1.3.18.1 phil 227 1.3.18.1 phil /* Initial rate - lowest */ 228 1.3.18.1 phil rate = rs->rs_rates[0]; 229 1.3.18.1 phil 230 1.3.18.1 phil /* XXX clear the basic rate flag if it's not 11n */ 231 1.3.18.1 phil if (! amrr_node_is_11n(ni)) 232 1.3.18.1 phil rate &= IEEE80211_RATE_VAL; 233 1.3.18.1 phil 234 1.3.18.1 phil /* pick initial rate from the rateset - HT or otherwise */ 235 1.3.18.1 phil /* Pick something low that's likely to succeed */ 236 1.3.18.1 phil for (amn->amn_rix = rs->rs_nrates - 1; amn->amn_rix > 0; 237 1.3.18.1 phil amn->amn_rix--) { 238 1.3.18.1 phil /* legacy - anything < 36mbit, stop searching */ 239 1.3.18.1 phil /* 11n - stop at MCS4 */ 240 1.3.18.1 phil if (amrr_node_is_11n(ni)) { 241 1.3.18.1 phil if ((rs->rs_rates[amn->amn_rix] & 0x1f) < 4) 242 1.3.18.1 phil break; 243 1.3.18.1 phil } else if ((rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL) <= 72) 244 1.3.18.1 phil break; 245 1.3.18.1 phil } 246 1.3.18.1 phil rate = rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL; 247 1.3.18.1 phil 248 1.3.18.1 phil /* if the rate is an 11n rate, ensure the MCS bit is set */ 249 1.3.18.1 phil if (amrr_node_is_11n(ni)) 250 1.3.18.1 phil rate |= IEEE80211_RATE_MCS; 251 1.3.18.1 phil 252 1.3.18.1 phil /* Assign initial rate from the rateset */ 253 1.3.18.1 phil ni->ni_txrate = rate; 254 1.3.18.1 phil amn->amn_ticks = ticks; 255 1.3.18.1 phil 256 1.3.18.1 phil /* XXX TODO: we really need a rate-to-string method */ 257 1.3.18.1 phil /* XXX TODO: non-11n rate should be divided by two.. */ 258 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 259 1.3.18.1 phil "AMRR: nrates=%d, initial rate %s%d", 260 1.3.18.1 phil rs->rs_nrates, 261 1.3.18.1 phil amrr_node_is_11n(ni) ? "MCS " : "", 262 1.3.18.1 phil rate & IEEE80211_RATE_VAL); 263 1.1 joerg } 264 1.1 joerg 265 1.3.18.1 phil static void 266 1.3.18.1 phil amrr_node_deinit(struct ieee80211_node *ni) 267 1.1 joerg { 268 1.3.18.1 phil IEEE80211_FREE(ni->ni_rctls, M_80211_RATECTL); 269 1.3.18.1 phil } 270 1.3.18.1 phil 271 1.3.18.1 phil static int 272 1.3.18.1 phil amrr_update(struct ieee80211_amrr *amrr, struct ieee80211_amrr_node *amn, 273 1.3.18.1 phil struct ieee80211_node *ni) 274 1.3.18.1 phil { 275 1.3.18.1 phil int rix = amn->amn_rix; 276 1.3.18.1 phil const struct ieee80211_rateset *rs = NULL; 277 1.3.18.1 phil 278 1.3.18.1 phil KASSERT(is_enough(amn), ("txcnt %d", amn->amn_txcnt)); 279 1.3.18.1 phil 280 1.3.18.1 phil /* 11n or not? Pick the right rateset */ 281 1.3.18.1 phil if (amrr_node_is_11n(ni)) { 282 1.3.18.1 phil /* XXX ew */ 283 1.3.18.1 phil rs = (struct ieee80211_rateset *) &ni->ni_htrates; 284 1.3.18.1 phil } else { 285 1.3.18.1 phil rs = &ni->ni_rates; 286 1.3.18.1 phil } 287 1.1 joerg 288 1.3.18.1 phil /* XXX TODO: we really need a rate-to-string method */ 289 1.3.18.1 phil /* XXX TODO: non-11n rate should be divided by two.. */ 290 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 291 1.3.18.1 phil "AMRR: current rate %d, txcnt=%d, retrycnt=%d", 292 1.3.18.1 phil rs->rs_rates[rix] & IEEE80211_RATE_VAL, 293 1.3.18.1 phil amn->amn_txcnt, 294 1.3.18.1 phil amn->amn_retrycnt); 295 1.3.18.1 phil 296 1.3.18.1 phil /* 297 1.3.18.1 phil * XXX This is totally bogus for 11n, as although high MCS 298 1.3.18.1 phil * rates for each stream may be failing, the next stream 299 1.3.18.1 phil * should be checked. 300 1.3.18.1 phil * 301 1.3.18.1 phil * Eg, if MCS5 is ok but MCS6/7 isn't, and we can go up to 302 1.3.18.1 phil * MCS23, we should skip 6/7 and try 8 onwards. 303 1.3.18.1 phil */ 304 1.3.18.1 phil if (is_success(amn)) { 305 1.1 joerg amn->amn_success++; 306 1.1 joerg if (amn->amn_success >= amn->amn_success_threshold && 307 1.3.18.1 phil rix + 1 < rs->rs_nrates) { 308 1.1 joerg amn->amn_recovery = 1; 309 1.1 joerg amn->amn_success = 0; 310 1.3.18.1 phil rix++; 311 1.3.18.1 phil /* XXX TODO: we really need a rate-to-string method */ 312 1.3.18.1 phil /* XXX TODO: non-11n rate should be divided by two.. */ 313 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 314 1.3.18.1 phil "AMRR increasing rate %d (txcnt=%d retrycnt=%d)", 315 1.3.18.1 phil rs->rs_rates[rix] & IEEE80211_RATE_VAL, 316 1.1 joerg amn->amn_txcnt, amn->amn_retrycnt); 317 1.1 joerg } else { 318 1.1 joerg amn->amn_recovery = 0; 319 1.1 joerg } 320 1.1 joerg } else if (is_failure(amn)) { 321 1.1 joerg amn->amn_success = 0; 322 1.3.18.1 phil if (rix > 0) { 323 1.1 joerg if (amn->amn_recovery) { 324 1.1 joerg amn->amn_success_threshold *= 2; 325 1.1 joerg if (amn->amn_success_threshold > 326 1.1 joerg amrr->amrr_max_success_threshold) 327 1.1 joerg amn->amn_success_threshold = 328 1.1 joerg amrr->amrr_max_success_threshold; 329 1.1 joerg } else { 330 1.1 joerg amn->amn_success_threshold = 331 1.1 joerg amrr->amrr_min_success_threshold; 332 1.1 joerg } 333 1.3.18.1 phil rix--; 334 1.3.18.1 phil /* XXX TODO: we really need a rate-to-string method */ 335 1.3.18.1 phil /* XXX TODO: non-11n rate should be divided by two.. */ 336 1.3.18.1 phil IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, 337 1.3.18.1 phil "AMRR decreasing rate %d (txcnt=%d retrycnt=%d)", 338 1.3.18.1 phil rs->rs_rates[rix] & IEEE80211_RATE_VAL, 339 1.1 joerg amn->amn_txcnt, amn->amn_retrycnt); 340 1.1 joerg } 341 1.1 joerg amn->amn_recovery = 0; 342 1.1 joerg } 343 1.1 joerg 344 1.3.18.1 phil /* reset counters */ 345 1.3.18.1 phil amn->amn_txcnt = 0; 346 1.3.18.1 phil amn->amn_retrycnt = 0; 347 1.3.18.1 phil 348 1.3.18.1 phil return rix; 349 1.3.18.1 phil } 350 1.3.18.1 phil 351 1.3.18.1 phil /* 352 1.3.18.1 phil * Return the rate index to use in sending a data frame. 353 1.3.18.1 phil * Update our internal state if it's been long enough. 354 1.3.18.1 phil * If the rate changes we also update ni_txrate to match. 355 1.3.18.1 phil */ 356 1.3.18.1 phil static int 357 1.3.18.1 phil amrr_rate(struct ieee80211_node *ni, void *arg __unused, uint32_t iarg __unused) 358 1.3.18.1 phil { 359 1.3.18.1 phil struct ieee80211_amrr_node *amn = ni->ni_rctls; 360 1.3.18.1 phil struct ieee80211_amrr *amrr = amn->amn_amrr; 361 1.3.18.1 phil const struct ieee80211_rateset *rs = NULL; 362 1.3.18.1 phil int rix; 363 1.3.18.1 phil 364 1.3.18.1 phil /* 11n or not? Pick the right rateset */ 365 1.3.18.1 phil if (amrr_node_is_11n(ni)) { 366 1.3.18.1 phil /* XXX ew */ 367 1.3.18.1 phil rs = (struct ieee80211_rateset *) &ni->ni_htrates; 368 1.3.18.1 phil } else { 369 1.3.18.1 phil rs = &ni->ni_rates; 370 1.3.18.1 phil } 371 1.3.18.1 phil 372 1.3.18.1 phil if (is_enough(amn) && (ticks - amn->amn_ticks) > amrr->amrr_interval) { 373 1.3.18.1 phil rix = amrr_update(amrr, amn, ni); 374 1.3.18.1 phil if (rix != amn->amn_rix) { 375 1.3.18.1 phil /* update public rate */ 376 1.3.18.1 phil ni->ni_txrate = rs->rs_rates[rix]; 377 1.3.18.1 phil /* XXX strip basic rate flag from txrate, if non-11n */ 378 1.3.18.1 phil if (amrr_node_is_11n(ni)) 379 1.3.18.1 phil ni->ni_txrate |= IEEE80211_RATE_MCS; 380 1.3.18.1 phil else 381 1.3.18.1 phil ni->ni_txrate &= IEEE80211_RATE_VAL; 382 1.3.18.1 phil amn->amn_rix = rix; 383 1.3.18.1 phil } 384 1.3.18.1 phil amn->amn_ticks = ticks; 385 1.3.18.1 phil } else 386 1.3.18.1 phil rix = amn->amn_rix; 387 1.3.18.1 phil return rix; 388 1.3.18.1 phil } 389 1.3.18.1 phil 390 1.3.18.1 phil /* 391 1.3.18.1 phil * Update statistics with tx complete status. Ok is non-zero 392 1.3.18.1 phil * if the packet is known to be ACK'd. Retries has the number 393 1.3.18.1 phil * retransmissions (i.e. xmit attempts - 1). 394 1.3.18.1 phil */ 395 1.3.18.1 phil static void 396 1.3.18.1 phil amrr_tx_complete(const struct ieee80211_node *ni, 397 1.3.18.1 phil const struct ieee80211_ratectl_tx_status *status) 398 1.3.18.1 phil { 399 1.3.18.1 phil struct ieee80211_amrr_node *amn = ni->ni_rctls; 400 1.3.18.1 phil int retries; 401 1.3.18.1 phil 402 1.3.18.1 phil retries = 0; 403 1.3.18.1 phil if (status->flags & IEEE80211_RATECTL_STATUS_LONG_RETRY) 404 1.3.18.1 phil retries = status->long_retries; 405 1.3.18.1 phil 406 1.3.18.1 phil amn->amn_txcnt++; 407 1.3.18.1 phil if (status->status == IEEE80211_RATECTL_TX_SUCCESS) 408 1.3.18.1 phil amn->amn_success++; 409 1.3.18.1 phil amn->amn_retrycnt += retries; 410 1.3.18.1 phil } 411 1.3.18.1 phil 412 1.3.18.1 phil static void 413 1.3.18.1 phil amrr_tx_update_cb(void *arg, struct ieee80211_node *ni) 414 1.3.18.1 phil { 415 1.3.18.1 phil struct ieee80211_ratectl_tx_stats *stats = arg; 416 1.3.18.1 phil struct ieee80211_amrr_node *amn = ni->ni_rctls; 417 1.3.18.1 phil int txcnt, success, retrycnt; 418 1.3.18.1 phil 419 1.3.18.1 phil txcnt = stats->nframes; 420 1.3.18.1 phil success = stats->nsuccess; 421 1.3.18.1 phil retrycnt = 0; 422 1.3.18.1 phil if (stats->flags & IEEE80211_RATECTL_TX_STATS_RETRIES) 423 1.3.18.1 phil retrycnt = stats->nretries; 424 1.3.18.1 phil 425 1.3.18.1 phil amn->amn_txcnt += txcnt; 426 1.3.18.1 phil amn->amn_success += success; 427 1.3.18.1 phil amn->amn_retrycnt += retrycnt; 428 1.3.18.1 phil } 429 1.3.18.1 phil 430 1.3.18.1 phil /* 431 1.3.18.1 phil * Set tx count/retry statistics explicitly. Intended for 432 1.3.18.1 phil * drivers that poll the device for statistics maintained 433 1.3.18.1 phil * in the device. 434 1.3.18.1 phil */ 435 1.3.18.1 phil static void 436 1.3.18.1 phil amrr_tx_update(struct ieee80211vap *vap, 437 1.3.18.1 phil struct ieee80211_ratectl_tx_stats *stats) 438 1.3.18.1 phil { 439 1.3.18.1 phil 440 1.3.18.1 phil if (stats->flags & IEEE80211_RATECTL_TX_STATS_NODE) 441 1.3.18.1 phil amrr_tx_update_cb(stats, stats->ni); 442 1.3.18.1 phil else { 443 1.3.18.1 phil ieee80211_iterate_nodes_vap(&vap->iv_ic->ic_sta, vap, 444 1.3.18.1 phil amrr_tx_update_cb, stats); 445 1.3.18.1 phil } 446 1.3.18.1 phil } 447 1.3.18.1 phil 448 1.3.18.2 phil #ifdef notyet 449 1.3.18.1 phil static int 450 1.3.18.1 phil amrr_sysctl_interval(SYSCTL_HANDLER_ARGS) 451 1.3.18.1 phil { 452 1.3.18.1 phil struct ieee80211vap *vap = arg1; 453 1.3.18.1 phil struct ieee80211_amrr *amrr = vap->iv_rs; 454 1.3.18.1 phil int msecs = ticks_to_msecs(amrr->amrr_interval); 455 1.3.18.1 phil int error; 456 1.3.18.1 phil 457 1.3.18.1 phil error = sysctl_handle_int(oidp, &msecs, 0, req); 458 1.3.18.1 phil if (error || !req->newptr) 459 1.3.18.1 phil return error; 460 1.3.18.1 phil amrr_setinterval(vap, msecs); 461 1.3.18.1 phil return 0; 462 1.3.18.1 phil } 463 1.3.18.2 phil #endif 464 1.3.18.1 phil 465 1.3.18.4 phil #ifdef notyet 466 1.3.18.1 phil static void 467 1.3.18.1 phil amrr_sysctlattach(struct ieee80211vap *vap, 468 1.3.18.1 phil struct sysctl_ctx_list *ctx, struct sysctl_oid *tree) 469 1.3.18.1 phil { 470 1.3.18.1 phil struct ieee80211_amrr *amrr = vap->iv_rs; 471 1.3.18.1 phil 472 1.3.18.1 phil SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 473 1.3.18.1 phil "amrr_rate_interval", CTLTYPE_INT | CTLFLAG_RW, vap, 474 1.3.18.1 phil 0, amrr_sysctl_interval, "I", "amrr operation interval (ms)"); 475 1.3.18.1 phil /* XXX bounds check values */ 476 1.3.18.1 phil SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 477 1.3.18.1 phil "amrr_max_sucess_threshold", CTLFLAG_RW, 478 1.3.18.1 phil &amrr->amrr_max_success_threshold, 0, ""); 479 1.3.18.1 phil SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 480 1.3.18.1 phil "amrr_min_sucess_threshold", CTLFLAG_RW, 481 1.3.18.1 phil &amrr->amrr_min_success_threshold, 0, ""); 482 1.3.18.1 phil } 483 1.3.18.4 phil #endif 484 1.3.18.1 phil 485 1.3.18.1 phil static void 486 1.3.18.1 phil amrr_node_stats(struct ieee80211_node *ni, struct sbuf *s) 487 1.3.18.1 phil { 488 1.3.18.1 phil int rate; 489 1.3.18.1 phil struct ieee80211_amrr_node *amn = ni->ni_rctls; 490 1.3.18.1 phil struct ieee80211_rateset *rs; 491 1.3.18.1 phil 492 1.3.18.1 phil /* XXX TODO: check locking? */ 493 1.3.18.1 phil 494 1.3.18.1 phil /* XXX TODO: this should be a method */ 495 1.3.18.1 phil if (amrr_node_is_11n(ni)) { 496 1.3.18.1 phil rs = (struct ieee80211_rateset *) &ni->ni_htrates; 497 1.3.18.1 phil rate = rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL; 498 1.3.18.1 phil sbuf_printf(s, "rate: MCS %d\n", rate); 499 1.3.18.1 phil } else { 500 1.3.18.1 phil rs = &ni->ni_rates; 501 1.3.18.1 phil rate = rs->rs_rates[amn->amn_rix] & IEEE80211_RATE_VAL; 502 1.3.18.1 phil sbuf_printf(s, "rate: %d Mbit\n", rate / 2); 503 1.3.18.1 phil } 504 1.3.18.1 phil 505 1.3.18.1 phil sbuf_printf(s, "ticks: %d\n", amn->amn_ticks); 506 1.3.18.1 phil sbuf_printf(s, "txcnt: %u\n", amn->amn_txcnt); 507 1.3.18.1 phil sbuf_printf(s, "success: %u\n", amn->amn_success); 508 1.3.18.1 phil sbuf_printf(s, "success_threshold: %u\n", amn->amn_success_threshold); 509 1.3.18.1 phil sbuf_printf(s, "recovery: %u\n", amn->amn_recovery); 510 1.3.18.1 phil sbuf_printf(s, "retry_cnt: %u\n", amn->amn_retrycnt); 511 1.1 joerg } 512 1.3.18.2 phil 513
Indexes created Thu Oct 02 14:10:14 GMT 2025