Return-path: Received: from mms2.broadcom.com ([216.31.210.18]:4708 "EHLO mms2.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758170Ab1F2XtQ (ORCPT ); Wed, 29 Jun 2011 19:49:16 -0400 From: "Franky Lin" To: gregkh@suse.de cc: devel@linuxdriverproject.org, linux-wireless@vger.kernel.org Subject: [PATCH 022/119] staging: brcm80211: taking max AMPDU length advertized by peer into account Date: Wed, 29 Jun 2011 16:46:46 -0700 Message-ID: <1309391303-22741-23-git-send-email-frankyl@broadcom.com> (sfid-20110630_015205_614224_79671E33) In-Reply-To: <1309391303-22741-1-git-send-email-frankyl@broadcom.com> References: <1309391303-22741-1-git-send-email-frankyl@broadcom.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Roland Vossen AP advertizes max AMPDU rx length in beacon/probe response frame. Code now uses this information to limit the length of AMPDU frames it transmits. Signed-off-by: Roland Vossen Reviewed-by: Arend van Spriel --- drivers/staging/brcm80211/brcmsmac/ampdu.c | 25 ++++++++------------- drivers/staging/brcm80211/brcmsmac/mac80211_if.c | 7 ++++- drivers/staging/brcm80211/brcmsmac/pub.h | 2 +- drivers/staging/brcm80211/brcmsmac/scb.h | 2 +- 4 files changed, 17 insertions(+), 19 deletions(-) diff --git a/drivers/staging/brcm80211/brcmsmac/ampdu.c b/drivers/staging/brcm80211/brcmsmac/ampdu.c index e9b78bf..6271ad1 100644 --- a/drivers/staging/brcm80211/brcmsmac/ampdu.c +++ b/drivers/staging/brcm80211/brcmsmac/ampdu.c @@ -220,9 +220,9 @@ static void brcms_c_scb_ampdu_update_config(struct ampdu_info *ampdu, scb_ampdu->release = min_t(u8, scb_ampdu->max_pdu, AMPDU_SCB_MAX_RELEASE); - if (scb_ampdu->max_rxlen) - scb_ampdu->release = - min_t(u8, scb_ampdu->release, scb_ampdu->max_rxlen / 1600); + if (scb_ampdu->max_rx_ampdu_bytes) + scb_ampdu->release = min_t(u8, scb_ampdu->release, + scb_ampdu->max_rx_ampdu_bytes / 1600); scb_ampdu->release = min(scb_ampdu->release, ampdu->fifo_tb[TX_AC_BE_FIFO]. @@ -410,7 +410,8 @@ static void brcms_c_ffpld_calc_mcs2ampdu_table(struct ampdu_info *ampdu, int f) void brcms_c_ampdu_tx_operational(struct brcms_c_info *wlc, u8 tid, - u8 ba_wsize) /* negotiated ba window size (in pdu) */ + u8 ba_wsize, /* negotiated ba window size (in pdu) */ + uint max_rx_ampdu_bytes) /* from ht_cap in beacon */ { scb_ampdu_t *scb_ampdu; scb_ampdu_tid_ini_t *ini; @@ -428,6 +429,7 @@ brcms_c_ampdu_tx_operational(struct brcms_c_info *wlc, u8 tid, ini->tid = tid; ini->scb = scb_ampdu->scb; ini->ba_wsize = ba_wsize; + scb_ampdu->max_rx_ampdu_bytes = max_rx_ampdu_bytes; } int @@ -446,7 +448,7 @@ brcms_c_sendampdu(struct ampdu_info *ampdu, struct brcms_c_txq_info *qi, bool rr = true, fbr = false; uint i, count = 0, fifo, seg_cnt = 0; u16 plen, len, seq = 0, mcl, mch, index, frameid, dma_len = 0; - u32 ampdu_len, maxlen = 0; + u32 ampdu_len, max_ampdu_bytes = 0; d11txh_t *txh = NULL; u8 *plcp; struct ieee80211_hdr *h; @@ -611,15 +613,10 @@ brcms_c_sendampdu(struct ampdu_info *ampdu, struct brcms_c_txq_info *qi, is40 = (plcp0 & MIMO_PLCP_40MHZ) ? 1 : 0; sgi = PLCP3_ISSGI(plcp3) ? 1 : 0; mcs = plcp0 & ~MIMO_PLCP_40MHZ; - maxlen = - min(scb_ampdu->max_rxlen, + max_ampdu_bytes = + min(scb_ampdu->max_rx_ampdu_bytes, ampdu->max_txlen[mcs][is40][sgi]); - /* XXX Fix me to honor real max_rxlen */ - /* can fix this as soon as ampdu_action() in mac80211.h - * gets extra u8buf_size par */ - maxlen = 64 * 1024; - if (is40) mimo_ctlchbw = CHSPEC_SB_UPPER(WLC_BAND_PI_RADIO_CHANSPEC) @@ -681,10 +678,8 @@ brcms_c_sendampdu(struct ampdu_info *ampdu, struct brcms_c_txq_info *qi, AMPDU_MAX_MPDU_OVERHEAD; plen = max(scb_ampdu->min_len, plen); - if ((plen + ampdu_len) > maxlen) { + if ((plen + ampdu_len) > max_ampdu_bytes) { p = NULL; - wiphy_err(wiphy, "%s: Bogus plen #1\n", - __func__); continue; } diff --git a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c index 547df75..c74c186 100644 --- a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c +++ b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c @@ -659,10 +659,13 @@ brcms_ops_ampdu_action(struct ieee80211_hw *hw, /* * BA window size from ADDBA response ('buf_size') defines how * many outstanding MPDUs are allowed for the BA stream by - * recipient and traffic class. + * recipient and traffic class. 'ampdu_factor' gives maximum + * AMPDU size. */ LOCK(wl); - brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size); + brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size, + (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + + sta->ht_cap.ampdu_factor)) - 1); UNLOCK(wl); /* Power save wakeup */ break; diff --git a/drivers/staging/brcm80211/brcmsmac/pub.h b/drivers/staging/brcm80211/brcmsmac/pub.h index 14c0d20..58ae61d 100644 --- a/drivers/staging/brcm80211/brcmsmac/pub.h +++ b/drivers/staging/brcm80211/brcmsmac/pub.h @@ -627,7 +627,7 @@ extern void brcms_default_rateset(struct brcms_c_info *wlc, wlc_rateset_t *rs); extern void brcms_c_ampdu_flush(struct brcms_c_info *wlc, struct ieee80211_sta *sta, u16 tid); extern void brcms_c_ampdu_tx_operational(struct brcms_c_info *wlc, u8 tid, - u8 ba_wsize); + u8 ba_wsize, uint max_rx_ampdu_bytes); extern int brcms_c_set_par(struct brcms_c_info *wlc, enum wlc_par_id par_id, int val); extern int brcms_c_get_par(struct brcms_c_info *wlc, enum wlc_par_id par_id, diff --git a/drivers/staging/brcm80211/brcmsmac/scb.h b/drivers/staging/brcm80211/brcmsmac/scb.h index c2080e9..62e005e 100644 --- a/drivers/staging/brcm80211/brcmsmac/scb.h +++ b/drivers/staging/brcm80211/brcmsmac/scb.h @@ -40,7 +40,7 @@ struct scb_ampdu { u8 max_pdu; /* max pdus allowed in ampdu */ u8 release; /* # of mpdus released at a time */ u16 min_len; /* min mpdu len to support the density */ - u32 max_rxlen; /* max ampdu rcv length; 8k, 16k, 32k, 64k */ + u32 max_rx_ampdu_bytes; /* max ampdu rcv length; 8k, 16k, 32k, 64k */ struct pktq txq; /* sdu transmit queue pending aggregation */ /* This could easily be a ini[] pointer and we keep this info in wl itself instead -- 1.7.1