diff options
Diffstat (limited to 'sys/net80211/ieee80211_rssadapt.c')
| -rw-r--r-- | sys/net80211/ieee80211_rssadapt.c | 128 |
1 files changed, 96 insertions, 32 deletions
diff --git a/sys/net80211/ieee80211_rssadapt.c b/sys/net80211/ieee80211_rssadapt.c index f1fc409edca1..e90ad578bb24 100644 --- a/sys/net80211/ieee80211_rssadapt.c +++ b/sys/net80211/ieee80211_rssadapt.c @@ -1,6 +1,7 @@ /* $FreeBSD$ */ /* $NetBSD: ieee80211_rssadapt.c,v 1.9 2005/02/26 22:45:09 perry Exp $ */ /*- + * Copyright (c) 2010 Rui Paulo <rpaulo@FreeBSD.org> * Copyright (c) 2003, 2004 David Young. All rights reserved. * * Redistribution and use in source and binary forms, with or @@ -42,6 +43,7 @@ #include <net80211/ieee80211_var.h> #include <net80211/ieee80211_rssadapt.h> +#include <net80211/ieee80211_ratectl.h> struct rssadapt_expavgctl { /* RSS threshold decay. */ @@ -71,15 +73,45 @@ static struct rssadapt_expavgctl master_expavgctl = { (parm##_denom - parm##_old) * (new)) / \ parm##_denom) -static void rssadapt_sysctlattach(struct ieee80211_rssadapt *rs, - struct sysctl_ctx_list *ctx, struct sysctl_oid *tree); +static void rssadapt_setinterval(const struct ieee80211vap *, int); +static void rssadapt_init(struct ieee80211vap *); +static void rssadapt_deinit(struct ieee80211vap *); +static void rssadapt_updatestats(struct ieee80211_rssadapt_node *); +static void rssadapt_node_init(struct ieee80211_node *); +static void rssadapt_node_deinit(struct ieee80211_node *); +static int rssadapt_rate(struct ieee80211_node *, void *, uint32_t); +static void rssadapt_lower_rate(struct ieee80211_rssadapt_node *, int, int); +static void rssadapt_raise_rate(struct ieee80211_rssadapt_node *, + int, int); +static void rssadapt_tx_complete(const struct ieee80211vap *, + const struct ieee80211_node *, int, + void *, void *); +static void rssadapt_sysctlattach(struct ieee80211vap *, + struct sysctl_ctx_list *, struct sysctl_oid *); /* number of references from net80211 layer */ static int nrefs = 0; -void -ieee80211_rssadapt_setinterval(struct ieee80211_rssadapt *rs, int msecs) +static const struct ieee80211_ratectl rssadapt = { + .ir_name = "rssadapt", + .ir_attach = NULL, + .ir_detach = NULL, + .ir_init = rssadapt_init, + .ir_deinit = rssadapt_deinit, + .ir_node_init = rssadapt_node_init, + .ir_node_deinit = rssadapt_node_deinit, + .ir_rate = rssadapt_rate, + .ir_tx_complete = rssadapt_tx_complete, + .ir_tx_update = NULL, + .ir_setinterval = rssadapt_setinterval, +}; +IEEE80211_RATECTL_MODULE(rssadapt, 1); +IEEE80211_RATECTL_ALG(rssadapt, IEEE80211_RATECTL_RSSADAPT, rssadapt); + +static void +rssadapt_setinterval(const struct ieee80211vap *vap, int msecs) { + struct ieee80211_rssadapt *rs = vap->iv_rs; int t; if (msecs < 100) @@ -88,18 +120,26 @@ ieee80211_rssadapt_setinterval(struct ieee80211_rssadapt *rs, int msecs) rs->interval = (t < 1) ? 1 : t; } -void -ieee80211_rssadapt_init(struct ieee80211_rssadapt *rs, struct ieee80211vap *vap, int interval) +static void +rssadapt_init(struct ieee80211vap *vap) { + struct ieee80211_rssadapt *rs; + + KASSERT(vap->iv_rs == NULL, ("%s: iv_rs already initialized", + __func__)); + + rs = malloc(sizeof(struct ieee80211_rssadapt), M_80211_RATECTL, + M_WAITOK|M_ZERO); + vap->iv_rs = rs; rs->vap = vap; - ieee80211_rssadapt_setinterval(rs, interval); - - rssadapt_sysctlattach(rs, vap->iv_sysctl, vap->iv_oid); + rssadapt_setinterval(vap, 500 /* msecs */); + rssadapt_sysctlattach(vap, vap->iv_sysctl, vap->iv_oid); } -void -ieee80211_rssadapt_cleanup(struct ieee80211_rssadapt *rs) +static void +rssadapt_deinit(struct ieee80211vap *vap) { + free(vap->iv_rs, M_80211_RATECTL); } static void @@ -118,12 +158,16 @@ rssadapt_updatestats(struct ieee80211_rssadapt_node *ra) ra->ra_raise_interval = msecs_to_ticks(interval); } -void -ieee80211_rssadapt_node_init(struct ieee80211_rssadapt *rsa, - struct ieee80211_rssadapt_node *ra, struct ieee80211_node *ni) +static void +rssadapt_node_init(struct ieee80211_node *ni) { + struct ieee80211_rssadapt_node *ra; + struct ieee80211_rssadapt *rsa = ni->ni_vap->iv_rs; const struct ieee80211_rateset *rs = &ni->ni_rates; + ra = malloc(sizeof(struct ieee80211_rssadapt_node), M_80211_RATECTL, + M_WAITOK|M_ZERO); + ni->ni_rctls = ra; ra->ra_rs = rsa; ra->ra_rates = *rs; rssadapt_updatestats(ra); @@ -140,6 +184,13 @@ ieee80211_rssadapt_node_init(struct ieee80211_rssadapt *rsa, "RSSADAPT initial rate %d", ni->ni_txrate); } +static void +rssadapt_node_deinit(struct ieee80211_node *ni) +{ + + free(ni->ni_rctls, M_80211_RATECTL); +} + static __inline int bucket(int pktlen) { @@ -155,10 +206,11 @@ bucket(int pktlen) return thridx; } -int -ieee80211_rssadapt_choose(struct ieee80211_node *ni, - struct ieee80211_rssadapt_node *ra, u_int pktlen) +static int +rssadapt_rate(struct ieee80211_node *ni, void *arg __unused, uint32_t iarg) { + struct ieee80211_rssadapt_node *ra = ni->ni_rctls; + u_int pktlen = iarg; const struct ieee80211_rateset *rs = &ra->ra_rates; uint16_t (*thrs)[IEEE80211_RATE_SIZE]; int rix, rssi; @@ -193,9 +245,8 @@ ieee80211_rssadapt_choose(struct ieee80211_node *ni, * raise the RSS threshold for transmitting packets of similar length at * the same data rate. */ -void -ieee80211_rssadapt_lower_rate(struct ieee80211_rssadapt_node *ra, - int pktlen, int rssi) +static void +rssadapt_lower_rate(struct ieee80211_rssadapt_node *ra, int pktlen, int rssi) { uint16_t last_thr; uint16_t (*thrs)[IEEE80211_RATE_SIZE]; @@ -214,9 +265,8 @@ ieee80211_rssadapt_lower_rate(struct ieee80211_rssadapt_node *ra, last_thr, (*thrs)[rix], rssi); } -void -ieee80211_rssadapt_raise_rate(struct ieee80211_rssadapt_node *ra, - int pktlen, int rssi) +static void +rssadapt_raise_rate(struct ieee80211_rssadapt_node *ra, int pktlen, int rssi) { uint16_t (*thrs)[IEEE80211_RATE_SIZE]; uint16_t newthr, oldthr; @@ -243,31 +293,45 @@ ieee80211_rssadapt_raise_rate(struct ieee80211_rssadapt_node *ra, } } +static void +rssadapt_tx_complete(const struct ieee80211vap *vap, + const struct ieee80211_node *ni, int success, void *arg1, void *arg2) +{ + struct ieee80211_rssadapt_node *ra = ni->ni_rctls; + int pktlen = *(int *)arg1, rssi = *(int *)arg2; + + if (success) { + ra->ra_nok++; + if ((ra->ra_rix + 1) < ra->ra_rates.rs_nrates && + (ticks - ra->ra_last_raise) >= ra->ra_raise_interval) + rssadapt_raise_rate(ra, pktlen, rssi); + } else { + ra->ra_nfail++; + rssadapt_lower_rate(ra, pktlen, rssi); + } +} + static int rssadapt_sysctl_interval(SYSCTL_HANDLER_ARGS) { - struct ieee80211_rssadapt *rs = arg1; + struct ieee80211vap *vap = arg1; + struct ieee80211_rssadapt *rs = vap->iv_rs; int msecs = ticks_to_msecs(rs->interval); int error; error = sysctl_handle_int(oidp, &msecs, 0, req); if (error || !req->newptr) return error; - ieee80211_rssadapt_setinterval(rs, msecs); + rssadapt_setinterval(vap, msecs); return 0; } static void -rssadapt_sysctlattach(struct ieee80211_rssadapt *rs, +rssadapt_sysctlattach(struct ieee80211vap *vap, struct sysctl_ctx_list *ctx, struct sysctl_oid *tree) { SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, - "rssadapt_rate_interval", CTLTYPE_INT | CTLFLAG_RW, rs, + "rssadapt_rate_interval", CTLTYPE_INT | CTLFLAG_RW, vap, 0, rssadapt_sysctl_interval, "I", "rssadapt operation interval (ms)"); } - -/* - * Module glue. - */ -IEEE80211_RATE_MODULE(rssadapt, 1); |