X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=carlfw%2Fsrc%2Fwlan.c;h=50c48f9d27d5f440bb5e6a9d5c14eb1719cb7448;hb=2bd700be49afc4c07cf45d0b537980e35322173b;hp=7567312251f8896f71dac95bfd7947a046273dab;hpb=d57b31e45dca1087cefd56876a0a8064efe4e29c;p=carl9170fw.git diff --git a/carlfw/src/wlan.c b/carlfw/src/wlan.c index 7567312..50c48f9 100644 --- a/carlfw/src/wlan.c +++ b/carlfw/src/wlan.c @@ -31,6 +31,7 @@ #include "printf.h" #include "rf.h" #include "linux/ieee80211.h" +#include "wol.h" static void wlan_txunstuck(unsigned int queue) { @@ -213,17 +214,7 @@ static bool wlan_tx_consume_retry(struct carl9170_tx_superframe *super) static inline u16 get_tid(struct ieee80211_hdr *hdr) { - return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK; -} - -/* This function will only work on uint32_t-aligned pointers! */ -static inline bool compare_ether_address(const void *_d0, const void *_d1) -{ - const uint32_t *d0 = _d0; - const uint32_t *d1 = _d1; - - /* BUG_ON((unsigned long)d0 & 3 || (unsigned long)d1 & 3)) */ - return !((d0[0] ^ d1[0]) | (unsigned short)(d0[1] ^ d1[1])); + return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK; } /* This function will only work on uint32_t-aligned pointers! */ @@ -244,13 +235,19 @@ static inline bool same_aggr(struct ieee80211_hdr *a, struct ieee80211_hdr *b) return (get_tid(a) == get_tid(b)) || same_hdr(a, b); } +static void wlan_tx_ampdu_reset(unsigned int qidx) +{ + fw.wlan.ampdu_prev[qidx] = NULL; +} + static void wlan_tx_ampdu_end(unsigned int qidx) { struct carl9170_tx_superframe *ht_prev = fw.wlan.ampdu_prev[qidx]; - fw.wlan.ampdu_prev[qidx] = NULL; if (ht_prev) ht_prev->f.hdr.mac.ba_end = 1; + + wlan_tx_ampdu_reset(qidx); } static void wlan_tx_ampdu(struct carl9170_tx_superframe *super) @@ -258,16 +255,16 @@ static void wlan_tx_ampdu(struct carl9170_tx_superframe *super) unsigned int qidx = super->s.queue; struct carl9170_tx_superframe *ht_prev = fw.wlan.ampdu_prev[qidx]; - if (!super->f.hdr.mac.ampdu) { - wlan_tx_ampdu_end(qidx); - } else { - fw.wlan.ampdu_prev[qidx] = super; - + if (super->f.hdr.mac.ampdu) { if (ht_prev && !same_aggr(&super->f.data.i3e, &ht_prev->f.data.i3e)) ht_prev->f.hdr.mac.ba_end = 1; else super->f.hdr.mac.ba_end = 0; + + fw.wlan.ampdu_prev[qidx] = super; + } else { + wlan_tx_ampdu_end(qidx); } } @@ -295,25 +292,12 @@ static void __wlan_tx(struct dma_desc *desc) wlan_tx_ampdu(super); -#if (defined CONFIG_CARL9170FW_LOOPBACK) || (defined CONFIG_CARL9170FW_DISCARD) - wlan_tx_complete(super, true); - unhide_super(desc); -# ifdef CONFIG_CARL9170FW_LOOPBACK - dma_put(&fw.pta.up_queue, desc); - up_trigger(); -# elif CONFIG_CARL9170FW_DISCARD - dma_reclaim(&fw.pta.down_queue, desc); - down_trigger(); -# endif -#else /* CONFIG_CARL9170FW_LOOPBACK */ - -# ifdef CONFIG_CARL9170FW_DEBUG +#ifdef CONFIG_CARL9170FW_DEBUG BUG_ON(fw.phy.psm.state != CARL9170_PSM_WAKE); -# endif /* CONFIG_CARL9170FW_DEBUG */ +#endif /* CONFIG_CARL9170FW_DEBUG */ /* insert desc into the right queue */ dma_put(&fw.wlan.tx_queue[super->s.queue], desc); -#endif /* CONFIG_CARL9170FW_LOOPBACK */ } static void wlan_assign_seq(struct ieee80211_hdr *hdr, unsigned int vif) @@ -321,7 +305,7 @@ static void wlan_assign_seq(struct ieee80211_hdr *hdr, unsigned int vif) hdr->seq_ctrl &= cpu_to_le16(~IEEE80211_SCTL_SEQ); hdr->seq_ctrl |= cpu_to_le16(fw.wlan.sequence[vif]); - if (!(hdr->seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG))) + if (ieee80211_is_first_frag(hdr->seq_ctrl)) fw.wlan.sequence[vif] += 0x10; } @@ -330,9 +314,8 @@ static void _wlan_tx(struct dma_desc *desc) { struct carl9170_tx_superframe *super = get_super(desc); - if (unlikely(super->s.assign_seq)) { + if (unlikely(super->s.assign_seq)) wlan_assign_seq(&super->f.data.i3e, super->s.vif_id); - } if (unlikely(super->s.ampdu_commit_density)) { set(AR9170_MAC_REG_AMPDU_DENSITY, @@ -347,8 +330,6 @@ static void _wlan_tx(struct dma_desc *desc) get(AR9170_MAC_REG_AMPDU_FACTOR), 8 << super->s.ampdu_factor)); } - - __wlan_tx(desc); } /* propagate transmission status back to the driver */ @@ -370,6 +351,12 @@ static bool wlan_tx_status(struct dma_queue *queue, /* reset retry indicator flags */ desc->ctrl &= ~(AR9170_CTRL_TXFAIL | AR9170_CTRL_BAFAIL); + /* + * Note: wlan_tx_consume_retry will override the old + * phy [CCK,OFDM, HT, BW20/40, MCS...] and mac vectors + * [AMPDU,RTS/CTS,...] therefore be careful when they + * are used. + */ if (wlan_tx_consume_retry(super)) { /* * retry for simple and aggregated 802.11 frames. @@ -414,7 +401,11 @@ static bool wlan_tx_status(struct dma_queue *queue, * be aware of this so the frames don't get lost. */ +#ifndef CONFIG_CARL9170FW_DEBUG dma_unlink_head(queue); +#else /* CONFIG_CARL9170FW_DEBUG */ + BUG_ON(dma_unlink_head(queue) != desc); +#endif /* CONFIG_CARL9170FW_DEBUG */ dma_put(&fw.wlan.tx_retry, desc); return true; } @@ -424,7 +415,11 @@ static bool wlan_tx_status(struct dma_queue *queue, } } +#ifndef CONFIG_CARL9170FW_DEBUG dma_unlink_head(queue); +#else /* CONFIG_CARL9170FW_DEBUG */ + BUG_ON(dma_unlink_head(queue) != desc); +#endif /* CONFIG_CARL9170FW_DEBUG */ if (txfail) { /* * Issue the queue bump, @@ -473,6 +468,8 @@ static void handle_tx_completion(void) } } + wlan_tx_ampdu_reset(i); + for_each_desc(desc, &fw.wlan.tx_retry) __wlan_tx(desc); @@ -500,10 +497,11 @@ void __hot wlan_tx(struct dma_desc *desc) #endif /* CONFIG_CARL9170FW_CAB_QUEUE */ _wlan_tx(desc); + __wlan_tx(desc); wlan_trigger(BIT(super->s.queue)); } -static void wlan_tx_fw(struct carl9170_tx_superdesc *super, fw_desc_callback_t cb) +void wlan_tx_fw(struct carl9170_tx_superdesc *super, fw_desc_callback_t cb) { if (!fw.wlan.fw_desc_available) return; @@ -528,7 +526,7 @@ static void wlan_send_buffered_ba(void) struct ieee80211_ba *ba = (struct ieee80211_ba *) &baf->f.ba; struct carl9170_bar_ctx *ctx; - if (likely(fw.wlan.ba_head_idx == fw.wlan.ba_tail_idx)) + if (likely(!fw.wlan.queued_ba)) return; /* there's no point to continue when the ba_desc is not available. */ @@ -538,6 +536,7 @@ static void wlan_send_buffered_ba(void) ctx = &fw.wlan.ba_cache[fw.wlan.ba_head_idx]; fw.wlan.ba_head_idx++; fw.wlan.ba_head_idx %= CONFIG_CARL9170FW_BACK_REQS_NUM; + fw.wlan.queued_ba--; baf->s.len = sizeof(struct carl9170_tx_superdesc) + sizeof(struct ar9170_tx_hwdesc) + @@ -547,13 +546,12 @@ static void wlan_send_buffered_ba(void) baf->s.queue = AR9170_TXQ_VO; baf->f.hdr.length = sizeof(struct ieee80211_ba) + FCS_LEN; - /* HW Duration / Backoff */ - baf->f.hdr.mac.backoff = 1; - baf->f.hdr.mac.hw_duration = 1; + baf->f.hdr.mac.no_ack = 1; - /* take the TX rate from the RX'd BAR */ - baf->f.hdr.phy.set = ctx->phy; - baf->f.hdr.phy.tx_power = 29; /* 14.5 dBm */ + baf->f.hdr.phy.modulation = 1; /* OFDM */ + baf->f.hdr.phy.tx_power = 34; /* 17 dBm */ + baf->f.hdr.phy.chains = 1; + baf->f.hdr.phy.mcs = AR9170_TXRX_PHY_RATE_OFDM_6M; /* format outgoing BA */ ba->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_NULLFUNC); @@ -584,11 +582,13 @@ static struct carl9170_bar_ctx *wlan_get_bar_cache_buffer(void) tmp = &fw.wlan.ba_cache[fw.wlan.ba_tail_idx]; fw.wlan.ba_tail_idx++; fw.wlan.ba_tail_idx %= CONFIG_CARL9170FW_BACK_REQS_NUM; + if (fw.wlan.queued_ba < CONFIG_CARL9170FW_BACK_REQS_NUM) + fw.wlan.queued_ba++; return tmp; } -static void handle_bar(struct dma_desc *desc, struct ieee80211_hdr *hdr, +static void handle_bar(struct dma_desc *desc __unused, struct ieee80211_hdr *hdr, unsigned int len, unsigned int mac_err) { struct ieee80211_bar *bar; @@ -633,11 +633,6 @@ static void handle_bar(struct dma_desc *desc, struct ieee80211_hdr *hdr, */ ctx->control = bar->control | cpu_to_le16(1); ctx->start_seq_num = bar->start_seq_num; - ctx->phy = ar9170_rx_to_phy(desc); - if (unlikely(!ctx->phy)) { - /* provide a backup, in case ar9170_rx_to_phy fails */ - ctx->phy = cpu_to_le32(0x2cc301); - } } static void wlan_check_rx_overrun(void) @@ -656,254 +651,6 @@ static void wlan_check_rx_overrun(void) } } -#ifdef CONFIG_CARL9170FW_WOL -void wlan_prepare_wol(void) -{ - /* set MAC filter */ - memcpy((void *)AR9170_MAC_REG_MAC_ADDR_L, fw.wlan.wol.cmd.mac, 6); - memcpy((void *)AR9170_MAC_REG_BSSID_L, fw.wlan.wol.cmd.bssid, 6); - set(AR9170_MAC_REG_RX_CONTROL, AR9170_MAC_RX_CTRL_DEAGG); - - /* set filter policy to: discard everything */ - fw.wlan.rx_filter = CARL9170_RX_FILTER_EVERYTHING; - - /* reenable rx dma */ - wlan_trigger(AR9170_DMA_TRIGGER_RXQ); - - /* initialize the last_beacon timer */ - fw.wlan.wol.last_null = fw.wlan.wol.last_beacon = get_clock_counter(); -} - -#ifdef CONFIG_CARL9170FW_WOL_NL80211_TRIGGERS -static bool wlan_rx_wol_magic_packet(struct ieee80211_hdr *hdr, unsigned int len) -{ - const unsigned char *data, *end, *mac; - unsigned int found = 0; - - /* - * LIMITATION: - * We can only scan the first AR9170_BLOCK_SIZE [=~320] bytes - * for MAGIC patterns! - */ - - mac = (const unsigned char *) AR9170_MAC_REG_MAC_ADDR_L; - - data = (u8 *)((unsigned long)hdr + ieee80211_hdrlen(hdr->frame_control)); - end = (u8 *)((unsigned long)hdr + len); - - /* - * scan for standard WOL Magic frame - * - * "A physical WakeOnLAN (Magic Packet) will look like this: - * --------------------------------------------------------------- - * | Synchronization Stream | Target MAC | Password (optional) | - * | 6 octets | 96 octets | 0, 4 or 6 | - * --------------------------------------------------------------- - * - * The Synchronization Stream is defined as 6 bytes of FFh. - * The Target MAC block contains 16 duplications of the IEEEaddress - * of the target, with no breaks or interruptions. - * - * The Password field is optional, but if present, contains either - * 4 bytes or 6 bytes. The WakeOnLAN dissector was implemented to - * dissect the password, if present, according to the command-line - * format that ether-wake uses, therefore, if a 4-byte password is - * present, it will be dissected as an IPv4 address and if a 6-byte - * password is present, it will be dissected as an Ethernet address. - * - * - */ - - while (data < end) { - if (found >= 6) { - if (*data == mac[found % 6]) - found++; - else - found = 0; - } - - /* previous check might reset found counter */ - if (found < 6) { - if (*data == 0xff) - found++; - else - found = 0; - } - - if (found == (6 + 16 * 6)) { - return true; - } - - data++; - } - - return false; -} - -static void wlan_wol_connect_callback(void __unused *dummy, bool success) -{ - if (success) - fw.wlan.wol.lost_null = 0; - else - fw.wlan.wol.lost_null++; -} - -static void wlan_wol_connection_monitor(void) -{ - struct carl9170_tx_null_superframe *nullf = &dma_mem.reserved.cmd.null; - struct ieee80211_hdr *null = (struct ieee80211_hdr *) &nullf->f.null; - - if (!fw.wlan.fw_desc_available) - return; - - memset(nullf, 0, sizeof(nullf)); - - nullf->s.len = sizeof(struct carl9170_tx_superdesc) + - sizeof(struct ar9170_tx_hwdesc) + - sizeof(struct ieee80211_hdr); - nullf->s.ri[0].tries = 3; - nullf->s.assign_seq = true; - nullf->s.queue = AR9170_TXQ_VO; - nullf->f.hdr.length = sizeof(struct ieee80211_hdr) + FCS_LEN; - - nullf->f.hdr.mac.backoff = 1; - nullf->f.hdr.mac.hw_duration = 1; - nullf->f.hdr.mac.erp_prot = AR9170_TX_MAC_PROT_RTS; - - nullf->f.hdr.phy.modulation = AR9170_TX_PHY_MOD_OFDM; - nullf->f.hdr.phy.bandwidth = AR9170_TX_PHY_BW_20MHZ; - nullf->f.hdr.phy.chains = AR9170_TX_PHY_TXCHAIN_2; - nullf->f.hdr.phy.tx_power = 29; /* 14.5 dBm */ - nullf->f.hdr.phy.mcs = AR9170_TXRX_PHY_RATE_OFDM_6M; - - /* format outgoing nullfunc */ - null->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | - IEEE80211_STYPE_NULLFUNC | IEEE80211_FCTL_TODS); - - memcpy(null->addr1, fw.wlan.wol.cmd.bssid, 6); - memcpy(null->addr2, fw.wlan.wol.cmd.mac, 6); - memcpy(null->addr3, fw.wlan.wol.cmd.bssid, 6); - - wlan_tx_fw(&nullf->s, wlan_wol_connect_callback); -} - -static bool wlan_rx_wol_disconnect(const unsigned int rx_filter, - struct ieee80211_hdr *hdr, - unsigned int __unused len) -{ - const unsigned char *bssid; - bssid = (const unsigned char *) AR9170_MAC_REG_BSSID_L; - - /* should catch both broadcast and unicast MLMEs */ - if (!(rx_filter & CARL9170_RX_FILTER_OTHER_RA)) { - if (ieee80211_is_deauth(hdr->frame_control) || - ieee80211_is_disassoc(hdr->frame_control)) - return true; - } - - if (ieee80211_is_beacon(hdr->frame_control) && - compare_ether_address(hdr->addr3, bssid)) { - fw.wlan.wol.last_beacon = get_clock_counter(); - } - - return false; -} - -#endif /* CARL9170FW_WOL_NL80211_TRIGGERS */ - -#ifdef CONFIG_CARL9170FW_WOL_PROBE_REQUEST - -/* - * Note: CONFIG_CARL9170FW_WOL_PROBE_REQUEST_SSID is not a real - * string. We have to be careful not to add a \0 at the end. - */ -static const struct { - u8 ssid_ie; - u8 ssid_len; - u8 ssid[sizeof(CONFIG_CARL9170FW_WOL_PROBE_REQUEST_SSID) - 1]; -} __packed probe_req = { - .ssid_ie = WLAN_EID_SSID, - .ssid_len = sizeof(CONFIG_CARL9170FW_WOL_PROBE_REQUEST_SSID) - 1, - .ssid = CONFIG_CARL9170FW_WOL_PROBE_REQUEST_SSID, -}; - -static bool wlan_rx_wol_probe_ssid(struct ieee80211_hdr *hdr, unsigned int len) -{ - const unsigned char *data, *end, *scan = (void *) &probe_req; - - /* - * IEEE 802.11-2007 7.3.2.1 specifies that the SSID is no - * longer than 32 octets. - */ - BUILD_BUG_ON((sizeof(CONFIG_CARL9170FW_WOL_PROBE_REQUEST_SSID) - 1) > 32); - - if (ieee80211_is_probe_req(hdr->frame_control)) { - unsigned int i; - end = (u8 *)((unsigned long)hdr + len); - - /* - * The position of the SSID information element inside - * a probe request frame is more or less "fixed". - */ - data = (u8 *)((struct ieee80211_mgmt *)hdr)->u.probe_req.variable; - for (i = 0; i < (unsigned int)(probe_req.ssid_len + 1); i++) { - if (scan[i] != data[i]) - return false; - } - - return true; - } - - return false; -} -#endif /* CONFIG_CARL9170FW_WOL_PROBE_REQUEST */ - -static void wlan_rx_wol(unsigned int rx_filter __unused, struct ieee80211_hdr *hdr __unused, unsigned int len __unused) -{ -#ifdef CONFIG_CARL9170FW_WOL_NL80211_TRIGGERS - /* Disconnect is always enabled */ - if (fw.wlan.wol.cmd.flags & CARL9170_WOL_DISCONNECT && - rx_filter & CARL9170_RX_FILTER_MGMT) - fw.wlan.wol.wake_up |= wlan_rx_wol_disconnect(rx_filter, hdr, len); - - if (fw.wlan.wol.cmd.flags & CARL9170_WOL_MAGIC_PKT && - rx_filter & CARL9170_RX_FILTER_DATA) - fw.wlan.wol.wake_up |= wlan_rx_wol_magic_packet(hdr, len); -#endif /* CONFIG_CARL9170FW_WOL_NL80211_TRIGGERS */ - -#ifdef CONFIG_CARL9170FW_WOL_PROBE_REQUEST - if (rx_filter & CARL9170_RX_FILTER_MGMT) - fw.wlan.wol.wake_up |= wlan_rx_wol_probe_ssid(hdr, len); -#endif /* CONFIG_CARL9170FW_WOL_PROBE_REQUEST */ -} - -static void wlan_wol_janitor(void) -{ - if (unlikely(fw.suspend_mode == CARL9170_HOST_SUSPENDED)) { - if (fw.wlan.wol.cmd.flags & CARL9170_WOL_DISCONNECT) { - /* - * connection lost after 10sec without receiving - * a beacon - */ - if (is_after_msecs(fw.wlan.wol.last_beacon, 10000)) - fw.wlan.wol.wake_up |= true; - - if (fw.wlan.wol.cmd.null_interval && - is_after_msecs(fw.wlan.wol.last_null, fw.wlan.wol.cmd.null_interval)) - wlan_wol_connection_monitor(); - - if (fw.wlan.wol.lost_null >= 5) - fw.wlan.wol.wake_up |= true; - } - - if (fw.wlan.wol.wake_up) { - fw.suspend_mode = CARL9170_AWAKE_HOST; - set(AR9170_USB_REG_WAKE_UP, AR9170_USB_WAKE_UP_WAKE); - } - } -} -#endif /* CONFIG_CARL9170FW_WOL */ - static unsigned int wlan_rx_filter(struct dma_desc *desc) { struct ieee80211_hdr *hdr; @@ -956,12 +703,10 @@ static unsigned int wlan_rx_filter(struct dma_desc *desc) rx_filter |= CARL9170_RX_FILTER_MGMT; } -#ifdef CONFIG_CARL9170FW_WOL if (unlikely(fw.suspend_mode == CARL9170_HOST_SUSPENDED)) { - wlan_rx_wol(rx_filter, hdr, min(data_len, - (unsigned int)AR9170_BLOCK_SIZE)); + wol_rx(rx_filter, hdr, min(data_len, + (unsigned int)AR9170_BLOCK_SIZE)); } -#endif /* CONFIG_CARL9170FW_WOL */ #undef AR9170_RX_ERROR_BAD @@ -1011,6 +756,7 @@ void wlan_cab_flush_queue(const unsigned int vif) /* ready to roll! */ _wlan_tx(desc); + __wlan_tx(desc); wlan_trigger(BIT(super->s.queue)); } } @@ -1159,9 +905,7 @@ static void wlan_janitor(void) wlan_send_buffered_ba(); -#ifdef CONFIG_CARL9170FW_WOL - wlan_wol_janitor(); -#endif /* CONFIG_CARL9170FW_WOL */ + wol_janitor(); } void handle_wlan(void)