Date: Sat, 9 Feb 2008 04:44:38 GMT From: Sam Leffler <sam@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 135086 for review Message-ID: <200802090444.m194icwU052568@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=135086 Change 135086 by sam@sam_ebb on 2008/02/09 04:44:03 make addba parameters tunable through net.wlan knobs Affected files ... .. //depot/projects/vap/sys/net80211/ieee80211_freebsd.c#18 edit .. //depot/projects/vap/sys/net80211/ieee80211_ht.c#11 edit Differences ... ==== //depot/projects/vap/sys/net80211/ieee80211_freebsd.c#18 (text+ko) ==== @@ -94,23 +94,37 @@ } IFC_SIMPLE_DECLARE(wlan, 0); -#ifdef IEEE80211_AMPDU_AGE static int -ieee80211_sysctl_ampdu_age(SYSCTL_HANDLER_ARGS) +ieee80211_sysctl_msecs_ticks(SYSCTL_HANDLER_ARGS) { - extern int ieee80211_ampdu_age; - int ampdu_age = ticks_to_msecs(ieee80211_ampdu_age); - int error; + int msecs = ticks_to_msecs(*(int *)arg1); + int error, t; - error = sysctl_handle_int(oidp, &du_age, 0, req); + error = sysctl_handle_int(oidp, &msecs, 0, req); if (error || !req->newptr) return error; - ieee80211_ampdu_age = msecs_to_ticks(ampdu_age); + t = msecs_to_ticks(msecs); + *(int *)arg1 = (t < 1) ? 1 : t; return 0; } -SYSCTL_PROC(_net_wlan, OID_AUTO, "ampdu_age", CTLFLAG_RW, NULL, 0, - ieee80211_sysctl_ampdu_age, "A", "AMPDU max reorder age (ms)"); + +#ifdef IEEE80211_AMPDU_AGE +extern int ieee80211_ampdu_age; +SYSCTL_PROC(_net_wlan, OID_AUTO, ampdu_age, CTLFLAG_RW, + &ieee80211_ampdu_age, 0, ieee80211_sysctl_msecs_ticks, "I", + "AMPDU max reorder age (ms)"); #endif +extern int ieee80211_addba_timeout; +SYSCTL_PROC(_net_wlan, OID_AUTO, addba_timeout, CTLFLAG_RW, + &ieee80211_addba_timeout, 0, ieee80211_sysctl_msecs_ticks, "I", + "ADDBA request timeout (ms)"); +extern int ieee80211_addba_backoff; +SYSCTL_PROC(_net_wlan, OID_AUTO, addba_backoff, CTLFLAG_RW, + &ieee80211_addba_backoff, 0, ieee80211_sysctl_msecs_ticks, "I", + "ADDBA request backoff (ms)"); +extern int ieee80211_addba_maxtries; +SYSCTL_INT(_net_wlan, OID_AUTO, addba_maxtries, CTLFLAG_RW, + &ieee80211_addba_maxtries, 0, "max ADDBA requests sent before backoff"); static int ieee80211_sysctl_inact(SYSCTL_HANDLER_ARGS) ==== //depot/projects/vap/sys/net80211/ieee80211_ht.c#11 (text+ko) ==== @@ -87,10 +87,23 @@ int ieee80211_ampdu_age = -1; /* threshold for ampdu reorder q (ms) */ #endif int ieee80211_recv_bar_ena = 1; +int ieee80211_addba_timeout = -1; +int ieee80211_addba_backoff = -1; +int ieee80211_addba_maxtries = 3; -#define IEEE80211_AGGR_TIMEOUT msecs_to_ticks(250) -#define IEEE80211_AGGR_MINRETRY msecs_to_ticks(10*1000) -#define IEEE80211_AGGR_MAXTRIES 3 +/* + * Setup HT parameters that depends on the clock frequency. + */ +static void +ieee80211_ht_setup(void) +{ +#ifdef IEEE80211_AMPDU_AGE + ieee80211_ampdu_age = msecs_to_ticks(500); +#endif + ieee80211_addba_timeout = msecs_to_ticks(250); + ieee80211_addba_backoff = msecs_to_ticks(10*1000); +} +SYSINIT(wlan_ht, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_ht_setup, NULL); static int ieee80211_addba_request(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap, @@ -106,10 +119,6 @@ void ieee80211_ht_attach(struct ieee80211com *ic) { -#ifdef IEEE80211_AMPDU_AGE - if (ieee80211_ampdu_age == -1) - ieee80211_ampdu_age = msecs_to_ticks(500); -#endif /* setup default aggregation policy */ ic->ic_recv_action = ieee80211_aggr_recv_action; ic->ic_send_action = ieee80211_send_action; @@ -1232,7 +1241,7 @@ addba_start_timeout(struct ieee80211_tx_ampdu *tap) { /* XXX use CALLOUT_PENDING instead? */ - callout_reset(&tap->txa_timer, IEEE80211_AGGR_TIMEOUT, + callout_reset(&tap->txa_timer, ieee80211_addba_timeout, addba_timeout, tap); tap->txa_flags |= IEEE80211_AGGR_XCHGPEND; tap->txa_lastrequest = ticks; @@ -1546,12 +1555,12 @@ callout_init(&tap->txa_timer, CALLOUT_MPSAFE); tap->txa_flags |= IEEE80211_AGGR_SETUP; } - if (tap->txa_attempts >= IEEE80211_AGGR_MAXTRIES && - (ticks - tap->txa_lastrequest) < IEEE80211_AGGR_MINRETRY) { + if (tap->txa_attempts >= ieee80211_addba_maxtries && + (ticks - tap->txa_lastrequest) < ieee80211_addba_backoff) { /* - * Don't retry too often; IEEE80211_AGGR_MINRETRY + * Don't retry too often; ieee80211_addba_backoff * defines the minimum interval we'll retry after - * IEEE80211_AGGR_MAXTRIES failed attempts to + * ieee80211_addba_maxtries failed attempts to * negotiate use. */ return 0; @@ -1583,7 +1592,7 @@ ni, "%s: could not setup BA stream for AC %d", __func__, tap->txa_ac); /* defer next try so we don't slam the driver with requests */ - tap->txa_attempts = IEEE80211_AGGR_MAXTRIES; + tap->txa_attempts = ieee80211_addba_maxtries; tap->txa_lastrequest = ticks; return 0; }
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