From e52f408bf689438a9f6aa36c0e4af6ae61b4413c Mon Sep 17 00:00:00 2001 From: Roland Vossen Date: Wed, 29 Jun 2011 16:46:45 -0700 Subject: [PATCH] staging: brcm80211: parsed ADDBA response ack window parameter IEEE80211_AMPDU_TX_OPERATIONAL provides a BA window size parameter. Code is now using this parameter to restrict the amount of outstanding tx AMPDUs. Signed-off-by: Roland Vossen Reviewed-by: Arend van Spriel Signed-off-by: Greg Kroah-Hartman --- drivers/staging/brcm80211/brcmsmac/ampdu.c | 55 ++++++++---------------- drivers/staging/brcm80211/brcmsmac/mac80211_if.c | 9 +++- drivers/staging/brcm80211/brcmsmac/pub.h | 2 + drivers/staging/brcm80211/brcmsmac/scb.h | 3 +- 4 files changed, 29 insertions(+), 40 deletions(-) diff --git a/drivers/staging/brcm80211/brcmsmac/ampdu.c b/drivers/staging/brcm80211/brcmsmac/ampdu.c index 74c4055..e9b78bf 100644 --- a/drivers/staging/brcm80211/brcmsmac/ampdu.c +++ b/drivers/staging/brcm80211/brcmsmac/ampdu.c @@ -114,9 +114,6 @@ static void brcms_c_ffpld_init(struct ampdu_info *ampdu); static int brcms_c_ffpld_check_txfunfl(struct brcms_c_info *wlc, int f); static void brcms_c_ffpld_calc_mcs2ampdu_table(struct ampdu_info *ampdu, int f); -static scb_ampdu_tid_ini_t *brcms_c_ampdu_init_tid_ini(struct ampdu_info *ampdu, - scb_ampdu_t *scb_ampdu, - u8 tid, bool override); static void brcms_c_scb_ampdu_update_max_txlen(struct ampdu_info *ampdu, u8 dur); static void brcms_c_scb_ampdu_update_config(struct ampdu_info *ampdu, @@ -411,22 +408,26 @@ static void brcms_c_ffpld_calc_mcs2ampdu_table(struct ampdu_info *ampdu, int f) } } -static void -brcms_c_ampdu_agg(struct ampdu_info *ampdu, struct scb *scb, struct sk_buff *p, - uint prec) +void +brcms_c_ampdu_tx_operational(struct brcms_c_info *wlc, u8 tid, + u8 ba_wsize) /* negotiated ba window size (in pdu) */ { scb_ampdu_t *scb_ampdu; scb_ampdu_tid_ini_t *ini; - u8 tid = (u8) (p->priority); - + struct ampdu_info *ampdu = wlc->ampdu; + struct scb *scb = wlc->pub->global_scb; scb_ampdu = SCB_AMPDU_CUBBY(ampdu, scb); - /* initialize initiator on first packet; sends addba req */ - ini = SCB_AMPDU_INI(scb_ampdu, tid); - if (ini->magic != INI_MAGIC) { - ini = brcms_c_ampdu_init_tid_ini(ampdu, scb_ampdu, tid, false); + if (!ampdu->ini_enable[tid]) { + wiphy_err(ampdu->wlc->wiphy, "%s: Rejecting tid %d\n", + __func__, tid); + return; } - return; + + ini = SCB_AMPDU_INI(scb_ampdu, tid); + ini->tid = tid; + ini->scb = scb_ampdu->scb; + ini->ba_wsize = ba_wsize; } int @@ -479,12 +480,13 @@ brcms_c_sendampdu(struct ampdu_info *ampdu, struct brcms_c_txq_info *qi, /* Let pressure continue to build ... */ qlen = pktq_plen(&qi->q, prec); - if (ini->tx_in_transit > 0 && qlen < scb_ampdu->max_pdu) { + if (ini->tx_in_transit > 0 && + qlen < min(scb_ampdu->max_pdu, ini->ba_wsize)) { + /* Collect multiple MPDU's to be sent in the next AMPDU */ return -EBUSY; } - brcms_c_ampdu_agg(ampdu, scb, p, tid); - + /* at this point we intend to transmit an AMPDU */ rr_retry_limit = ampdu->rr_retry_limit_tid[tid]; ampdu_len = 0; dma_len = 0; @@ -1083,27 +1085,6 @@ brcms_c_ampdu_dotxstatus_complete(struct ampdu_info *ampdu, struct scb *scb, brcms_c_txfifo_complete(wlc, queue, ampdu->txpkt_weight); } -/* initialize the initiator code for tid */ -static scb_ampdu_tid_ini_t *brcms_c_ampdu_init_tid_ini(struct ampdu_info *ampdu, - scb_ampdu_t *scb_ampdu, - u8 tid, bool override) -{ - scb_ampdu_tid_ini_t *ini; - - /* check for per-tid control of ampdu */ - if (!ampdu->ini_enable[tid]) { - wiphy_err(ampdu->wlc->wiphy, "%s: Rejecting tid %d\n", - __func__, tid); - return NULL; - } - - ini = SCB_AMPDU_INI(scb_ampdu, tid); - ini->tid = tid; - ini->scb = scb_ampdu->scb; - ini->magic = INI_MAGIC; - return ini; -} - static int brcms_c_ampdu_set(struct ampdu_info *ampdu, bool on) { struct brcms_c_info *wlc = ampdu->wlc; diff --git a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c index 73e60df..547df75 100644 --- a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c +++ b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c @@ -656,7 +656,14 @@ brcms_ops_ampdu_action(struct ieee80211_hw *hw, ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); break; case IEEE80211_AMPDU_TX_OPERATIONAL: - /* Not sure what to do here */ + /* + * BA window size from ADDBA response ('buf_size') defines how + * many outstanding MPDUs are allowed for the BA stream by + * recipient and traffic class. + */ + LOCK(wl); + brcms_c_ampdu_tx_operational(wl->wlc, tid, buf_size); + UNLOCK(wl); /* Power save wakeup */ break; default: diff --git a/drivers/staging/brcm80211/brcmsmac/pub.h b/drivers/staging/brcm80211/brcmsmac/pub.h index 2345a31..14c0d20 100644 --- a/drivers/staging/brcm80211/brcmsmac/pub.h +++ b/drivers/staging/brcm80211/brcmsmac/pub.h @@ -626,6 +626,8 @@ 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); 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 fa5c0b3..c2080e9 100644 --- a/drivers/staging/brcm80211/brcmsmac/scb.h +++ b/drivers/staging/brcm80211/brcmsmac/scb.h @@ -25,11 +25,11 @@ #define AMPDU_TX_BA_MAX_WSIZE 64 /* max Tx ba window size (in pdu) */ /* structure to store per-tid state for the ampdu initiator */ struct scb_ampdu_tid_ini { - u32 magic; u8 tx_in_transit; /* number of pending mpdus in transit in driver */ u8 tid; /* initiator tid for easy lookup */ u8 txretry[AMPDU_TX_BA_MAX_WSIZE]; /* tx retry count; indexed by seq modulo */ struct scb *scb; /* backptr for easy lookup */ + u8 ba_wsize; /* negotiated ba window size (in pdu) */ }; #define AMPDU_MAX_SCB_TID NUMPRIO @@ -51,7 +51,6 @@ struct scb_ampdu { }; #define SCB_MAGIC 0xbeefcafe -#define INI_MAGIC 0xabcd1234 /* station control block - one per remote MAC address */ struct scb { -- 2.7.4