From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-ww0-f44.google.com ([74.125.82.44]:36108 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753039Ab1HNKSL (ORCPT ); Sun, 14 Aug 2011 06:18:11 -0400 Received: by mail-ww0-f44.google.com with SMTP id 5so4060970wwf.1 for ; Sun, 14 Aug 2011 03:18:11 -0700 (PDT) From: Eliad Peller To: Luciano Coelho Cc: Subject: [PATCH v2 36/40] wl12xx: enable AP advanced functionality Date: Sun, 14 Aug 2011 13:17:35 +0300 Message-Id: <1313317059-16567-37-git-send-email-eliad@wizery.com> (sfid-20110814_121815_909514_8F10E2E7) In-Reply-To: <1313317059-16567-1-git-send-email-eliad@wizery.com> References: <1313317059-16567-1-git-send-email-eliad@wizery.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Arik Nemtsov This adjusts FW TX block allocation for connected stations in PS. Firmware congestion is measured in allocated packets instead of blocks. Allow a link in PS to queue up to 2 packets to the FW. Signed-off-by: Arik Nemtsov Signed-off-by: Eliad Peller --- drivers/net/wireless/wl12xx/main.c | 54 +++++++++++++++++----------------- drivers/net/wireless/wl12xx/ps.c | 4 +- drivers/net/wireless/wl12xx/tx.c | 19 +++++------- drivers/net/wireless/wl12xx/wl12xx.h | 25 +++++++++------- 4 files changed, 51 insertions(+), 51 deletions(-) diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c index 7be7fc6..3d323b8 100644 --- a/drivers/net/wireless/wl12xx/main.c +++ b/drivers/net/wireless/wl12xx/main.c @@ -752,64 +752,73 @@ static int wl1271_plt_init(struct wl1271 *wl) kfree(wl->target_mem_map); wl->target_mem_map = NULL; return ret; } -#if 0 -static void wl1271_irq_ps_regulate_link(struct wl1271 *wl, u8 hlid, u8 tx_blks) +static void wl12xx_irq_ps_regulate_link(struct wl1271 *wl, u8 hlid, u8 tx_pkts) { bool fw_ps; /* only regulate station links */ if (hlid < WL1271_AP_STA_HLID_START) return; fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map); /* * Wake up from high level PS if the STA is asleep with too little - * blocks in FW or if the STA is awake. + * packets in FW or if the STA is awake. */ - if (!fw_ps || tx_blks < WL1271_PS_STA_MAX_BLOCKS) + if (!fw_ps || tx_pkts < WL1271_PS_STA_MAX_PACKETS) wl1271_ps_link_end(wl, hlid); /* Start high-level PS if the STA is asleep with enough blocks in FW */ - else if (fw_ps && tx_blks >= WL1271_PS_STA_MAX_BLOCKS) + else if (fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS) wl1271_ps_link_start(wl, hlid, true); } -static void wl1271_irq_update_links_status(struct wl1271 *wl, - struct wl1271_fw_ap_status *status) +bool wl1271_is_active_sta(struct wl1271 *wl, u8 hlid) +{ + int id = hlid - WL1271_AP_STA_HLID_START; + return test_bit(id, wl->ap_hlid_map); +} + +static void wl12xx_irq_update_links_status(struct wl1271 *wl, + struct wl12xx_fw_status *status) { u32 cur_fw_ps_map; - u8 hlid; + u8 hlid, cnt; + + /* TODO: also use link_fast_bitmap here */ cur_fw_ps_map = le32_to_cpu(status->link_ps_bitmap); if (wl->ap_fw_ps_map != cur_fw_ps_map) { wl1271_debug(DEBUG_PSM, "link ps prev 0x%x cur 0x%x changed 0x%x", wl->ap_fw_ps_map, cur_fw_ps_map, wl->ap_fw_ps_map ^ cur_fw_ps_map); wl->ap_fw_ps_map = cur_fw_ps_map; } for (hlid = WL1271_AP_STA_HLID_START; hlid < AP_MAX_LINKS; hlid++) { - u8 cnt = status->tx_lnk_free_blks[hlid] - - wl->links[hlid].prev_freed_blks; + if (!wl1271_is_active_sta(wl, hlid)) + continue; - wl->links[hlid].prev_freed_blks = - status->tx_lnk_free_blks[hlid]; - wl->links[hlid].allocated_blks -= cnt; + cnt = status->tx_lnk_free_pkts[hlid] - + wl->links[hlid].prev_freed_pkts; - wl1271_irq_ps_regulate_link(wl, hlid, - wl->links[hlid].allocated_blks); + wl->links[hlid].prev_freed_pkts = + status->tx_lnk_free_pkts[hlid]; + wl->links[hlid].allocated_pkts -= cnt; + + wl12xx_irq_ps_regulate_link(wl, hlid, + wl->links[hlid].allocated_pkts); } } -#endif static void wl12xx_fw_status(struct wl1271 *wl, struct wl12xx_fw_status *status) { struct timespec ts; u32 old_tx_blk_count = wl->tx_blocks_available; @@ -862,17 +871,14 @@ static void wl12xx_fw_status(struct wl1271 *wl, /* if more blocks are available now, tx work can be scheduled */ if (wl->tx_blocks_available > old_tx_blk_count) clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags); /* for AP update num of allocated TX blocks per link and ps status */ - if (wl->bss_type == BSS_TYPE_AP_BSS) { -#if 0 - wl1271_irq_update_links_status(wl, status); -#endif - } + if (wl->bss_type == BSS_TYPE_AP_BSS) + wl12xx_irq_update_links_status(wl, status); /* update the host-chipset time offset */ getnstimeofday(&ts); wl->time_offset = (timespec_to_ns(&ts) >> 10) - (s64)le32_to_cpu(status->fw_localtime); } @@ -3708,18 +3714,12 @@ static void wl1271_free_sta(struct wl1271 *wl, u8 hlid) wl->links[hlid].ba_bitmap = 0; wl1271_tx_reset_link_queues(wl, hlid); __clear_bit(hlid, &wl->ap_ps_map); __clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map); } -bool wl1271_is_active_sta(struct wl1271 *wl, u8 hlid) -{ - int id = hlid - WL1271_AP_STA_HLID_START; - return test_bit(id, wl->ap_hlid_map); -} - static int wl1271_op_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct wl1271 *wl = hw->priv; int ret = 0; diff --git a/drivers/net/wireless/wl12xx/ps.c b/drivers/net/wireless/wl12xx/ps.c index 3548377..4b720b1 100644 --- a/drivers/net/wireless/wl12xx/ps.c +++ b/drivers/net/wireless/wl12xx/ps.c @@ -223,14 +223,14 @@ void wl1271_ps_link_start(struct wl1271 *wl, u8 hlid, bool clean_queues) { struct ieee80211_sta *sta; if (test_bit(hlid, &wl->ap_ps_map)) return; - wl1271_debug(DEBUG_PSM, "start mac80211 PSM on hlid %d blks %d " - "clean_queues %d", hlid, wl->links[hlid].allocated_blks, + wl1271_debug(DEBUG_PSM, "start mac80211 PSM on hlid %d pkts %d " + "clean_queues %d", hlid, wl->links[hlid].allocated_pkts, clean_queues); rcu_read_lock(); sta = ieee80211_find_sta(wl->vif, wl->links[hlid].addr); if (!sta) { wl1271_error("could not find sta %pM for starting ps", diff --git a/drivers/net/wireless/wl12xx/tx.c b/drivers/net/wireless/wl12xx/tx.c index ccbcd0a..0f15785 100644 --- a/drivers/net/wireless/wl12xx/tx.c +++ b/drivers/net/wireless/wl12xx/tx.c @@ -120,33 +120,31 @@ static void wl1271_tx_ap_update_inconnection_sta(struct wl1271 *wl, hdr = (struct ieee80211_hdr *)(skb->data + sizeof(struct wl1271_tx_hw_descr)); if (ieee80211_is_auth(hdr->frame_control)) wl1271_acx_set_inconnection_sta(wl, hdr->addr1); } -#if 0 static void wl1271_tx_regulate_link(struct wl1271 *wl, u8 hlid) { bool fw_ps; - u8 tx_blks; + u8 tx_pkts; /* only regulate station links */ if (hlid < WL1271_AP_STA_HLID_START) return; fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map); - tx_blks = wl->links[hlid].allocated_blks; + tx_pkts = wl->links[hlid].allocated_pkts; /* * if in FW PS and there is enough data in FW we can put the link * into high-level PS and clean out its TX queues. */ - if (fw_ps && tx_blks >= WL1271_PS_STA_MAX_BLOCKS) + if (fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS) wl1271_ps_link_start(wl, hlid, true); } -#endif static bool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb) { return wl->dummy_packet == skb; } @@ -242,14 +240,15 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra, wl->tx_blocks_available -= total_blocks; wl->tx_allocated_blocks += total_blocks; ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); wl->tx_allocated_pkts[ac]++; - if (wl->bss_type == BSS_TYPE_AP_BSS) - wl->links[hlid].allocated_blks += total_blocks; + if (wl->bss_type == BSS_TYPE_AP_BSS && + hlid >= WL1271_AP_STA_HLID_START) + wl->links[hlid].allocated_pkts++; ret = 0; wl1271_debug(DEBUG_TX, "tx_allocate: size: %d, blocks: %d, id: %d", total_len, total_blocks, id); @@ -411,15 +410,13 @@ static int wl1271_prepare_tx_frame(struct wl1271 *wl, struct sk_buff *skb, return ret; wl1271_tx_fill_hdr(wl, skb, extra, info, hlid); if (wl->bss_type == BSS_TYPE_AP_BSS) { wl1271_tx_ap_update_inconnection_sta(wl, skb); -#if 0 wl1271_tx_regulate_link(wl, hlid); -#endif } else { wl1271_tx_update_filters(wl, skb); } /* * The length of each packet is stored in terms of @@ -885,14 +882,14 @@ void wl1271_tx_reset(struct wl1271 *wl, bool reset_tx_queues) struct ieee80211_tx_info *info; /* TX failure */ if (wl->bss_type == BSS_TYPE_AP_BSS) { for (i = 0; i < AP_MAX_LINKS; i++) { wl1271_tx_reset_link_queues(wl, i); - wl->links[i].allocated_blks = 0; - wl->links[i].prev_freed_blks = 0; + wl->links[i].allocated_pkts = 0; + wl->links[i].prev_freed_pkts = 0; } wl->last_tx_hlid = 0; } else { for (i = 0; i < NUM_TX_QUEUES; i++) { while ((skb = skb_dequeue(&wl->tx_queue[i]))) { diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h index 6118df5..61a7c21 100644 --- a/drivers/net/wireless/wl12xx/wl12xx.h +++ b/drivers/net/wireless/wl12xx/wl12xx.h @@ -149,21 +149,20 @@ extern u32 wl12xx_debug_level; * TODO: we currently don't support multirole. remove * this constant from the code when we do. */ #define WL1271_AP_STA_HLID_START 3 /* - * When in AP-mode, we allow (at least) this number of mem-blocks + * When in AP-mode, we allow (at least) this number of packets * to be transmitted to FW for a STA in PS-mode. Only when packets are * present in the FW buffers it will wake the sleeping STA. We want to put * enough packets for the driver to transmit all of its buffered data before - * the STA goes to sleep again. But we don't want to take too much mem-blocks + * the STA goes to sleep again. But we don't want to take too much memory * as it might hurt the throughput of active STAs. - * The number of blocks (18) is enough for 2 large packets. */ -#define WL1271_PS_STA_MAX_BLOCKS (2 * 9) +#define WL1271_PS_STA_MAX_PACKETS 2 #define WL1271_AP_BSS_INDEX 0 #define WL1271_AP_DEF_BEACON_EXP 20 #define ACX_TX_DESCRIPTORS 16 @@ -234,14 +233,18 @@ struct wl1271_stats { #define NUM_TX_QUEUES 4 #define NUM_RX_PKT_DESC 8 #define AP_MAX_STATIONS 5 -/* Broadcast and Global links + links to stations */ -#define AP_MAX_LINKS (AP_MAX_STATIONS + 2) +/* Broadcast and Global links + system link + links to stations */ +/* + * TODO: when WL1271_AP_STA_HLID_START is no longer constant, change all + * the places that use this. + */ +#define AP_MAX_LINKS (AP_MAX_STATIONS + 3) /* FW status registers */ struct wl12xx_fw_status { __le32 intr; u8 fw_rx_counter; u8 drv_rx_counter; @@ -268,14 +271,14 @@ struct wl12xx_fw_status { /* Size (in Memory Blocks) of TX pool */ __le32 tx_total; /* Cumulative counter of released packets per AC */ u8 tx_released_pkts[NUM_TX_QUEUES]; - /* Cumulative counter of freed MBs per HLID */ - u8 tx_lnk_free_blks[WL12XX_MAX_LINKS]; + /* Cumulative counter of freed packets per HLID */ + u8 tx_lnk_free_pkts[WL12XX_MAX_LINKS]; /* Cumulative counter of released Voice memory blocks */ u8 tx_voice_released_blks; u8 padding_1[7]; __le32 log_start_addr; } __packed; @@ -348,15 +351,15 @@ enum wl12xx_flags { }; struct wl1271_link { /* AP-mode - TX queue per AC in link */ struct sk_buff_head tx_queue[NUM_TX_QUEUES]; - /* accounting for allocated / available TX blocks in FW */ - u8 allocated_blks; - u8 prev_freed_blks; + /* accounting for allocated / freed packets in FW */ + u8 allocated_pkts; + u8 prev_freed_pkts; u8 addr[ETH_ALEN]; /* bitmap of TIDs where RX BA sessions are active for this link */ u8 ba_bitmap; }; -- 1.7.6.401.g6a319