From 42f3ffb244e5cabba181fe6c59042caa61b650cb Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Mon, 21 Nov 2011 16:54:40 +0100 Subject: [PATCH] carl9170 firmware: move wowlan routines into separate files Signed-off-by: Christian Lamparter --- carlfw/CMakeLists.txt | 2 +- carlfw/include/carl9170.h | 20 +-- carlfw/include/wl.h | 11 ++ carlfw/include/wol.h | 63 +++++++++ carlfw/src/cmd.c | 5 +- carlfw/src/wlan.c | 268 +---------------------------------- carlfw/src/wol.c | 287 ++++++++++++++++++++++++++++++++++++++ carlfw/usb/main.c | 7 +- 8 files changed, 383 insertions(+), 280 deletions(-) create mode 100644 carlfw/include/wol.h create mode 100644 carlfw/src/wol.c diff --git a/carlfw/CMakeLists.txt b/carlfw/CMakeLists.txt index 1c9f0c8..caf9595 100644 --- a/carlfw/CMakeLists.txt +++ b/carlfw/CMakeLists.txt @@ -16,7 +16,7 @@ include_directories (../include/linux ../include/shared ../include include) set(carl9170_main_src src/main.c src/wlan.c src/fw.c src/gpio.c src/cmd.c src/uart.c src/dma.c src/hostif.c src/reboot.S - src/printf.c src/rf.c src/cam.c) + src/printf.c src/rf.c src/cam.c src/wol.c) set(carl9170_lib_src src/ashlsi3.S src/memcpy.S src/memset.S src/udivsi3_i4i-Os.S) set(carl9170_usb_src usb/main.c usb/usb.c usb/fifo.c) diff --git a/carlfw/include/carl9170.h b/carlfw/include/carl9170.h index ab8e9ff..a319b2a 100644 --- a/carlfw/include/carl9170.h +++ b/carlfw/include/carl9170.h @@ -142,16 +142,6 @@ struct firmware_context_struct { struct carl9170_bar_ctx ba_cache[CONFIG_CARL9170FW_BACK_REQS_NUM]; unsigned int ba_tail_idx, ba_head_idx; - -#ifdef CONFIG_CARL9170FW_WOL - struct { - struct carl9170_wol_cmd cmd; - unsigned int last_beacon; - unsigned int lost_null; - unsigned int last_null; - bool wake_up; - } wol; -#endif /* CONFIG_CARL9170FW_WOL */ } wlan; struct { @@ -206,6 +196,16 @@ struct firmware_context_struct { struct carl9170_tally_rsp tally; unsigned int tx_time; +#ifdef CONFIG_CARL9170FW_WOL + struct { + struct carl9170_wol_cmd cmd; + unsigned int last_beacon; + unsigned int lost_null; + unsigned int last_null; + bool wake_up; + } wol; +#endif /* CONFIG_CARL9170FW_WOL */ + #ifdef CONFIG_CARL9170FW_GPIO_INTERRUPT struct carl9170_gpio cached_gpio_state; #endif /*CONFIG_CARL9170FW_GPIO_INTERRUPT */ diff --git a/carlfw/include/wl.h b/carlfw/include/wl.h index 9af4fdb..dd5b0a8 100644 --- a/carlfw/include/wl.h +++ b/carlfw/include/wl.h @@ -254,7 +254,18 @@ static inline __inline __hot void read_tsf(uint32_t *tsf) tsf[1] = get(AR9170_MAC_REG_TSF_H); } +/* 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])); +} + void wlan_tx(struct dma_desc *desc); +void wlan_tx_fw(struct carl9170_tx_superdesc *super, fw_desc_callback_t cb); void wlan_timer(void); void handle_wlan(void); diff --git a/carlfw/include/wol.h b/carlfw/include/wol.h new file mode 100644 index 0000000..8b131ac --- /dev/null +++ b/carlfw/include/wol.h @@ -0,0 +1,63 @@ +/* + * carl9170 firmware - used by the ar9170 wireless device + * + * WakeUp on WLAN definitions + * + * Copyright (c) 2000-2005 ZyDAS Technology Corporation + * Copyright (c) 2007-2009 Atheros Communications, Inc. + * Copyright 2009 Johannes Berg + * Copyright 2009-2011 Christian Lamparter + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef __CARL9170FW_WOL_H +#define __CARL9170FW_WOL_H + +#include "config.h" +#include "compiler.h" +#include "types.h" + +#include "fwcmd.h" + +#ifdef CONFIG_CARL9170FW_WOL + +struct ieee80211_hdr; + +void wol_prepare(void); +void wol_janitor(void); +void wol_rx(const unsigned int rx_filter __unused, const struct ieee80211_hdr *hdr __unused, const unsigned int len __unused); +void wol_cmd(const struct carl9170_wol_cmd *cmd); + +#else + +inline static void wol_cmd(const struct carl9170_wol_cmd *cmd __unused) +{ +} + +inline static void wol_prepare(void) +{ +} + +inline static void wol_janitor(void) +{ +} + +inline static void wol_rx(const unsigned int rx_filter __unused, const struct ieee80211_hdr *hdr __unused, const unsigned int len __unused) +{ +} +#endif /* CONFIG_CARL9170FW_WOL */ + +#endif /* __CARL9170FW_CMD_H */ diff --git a/carlfw/src/cmd.c b/carlfw/src/cmd.c index 9e37f54..e1dcbb0 100644 --- a/carlfw/src/cmd.c +++ b/carlfw/src/cmd.c @@ -30,6 +30,7 @@ #include "printf.h" #include "timer.h" #include "wl.h" +#include "wol.h" void handle_cmd(struct carl9170_rsp *resp) { @@ -86,11 +87,9 @@ void handle_cmd(struct carl9170_rsp *resp) fw.wlan.rx_filter = cmd->rx_filter.rx_filter; break; -#ifdef CONFIG_CARL9170FW_WOL case CARL9170_CMD_WOL: - memcpy(&fw.wlan.wol.cmd, &cmd->wol, sizeof(cmd->wol)); + wol_cmd(&cmd->wol); break; -#endif /* CONFIG_CARL9170FW_WOL */ case CARL9170_CMD_TALLY: resp->hdr.len = sizeof(struct carl9170_tally_rsp); diff --git a/carlfw/src/wlan.c b/carlfw/src/wlan.c index 1b89536..cc2b917 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) { @@ -216,16 +217,6 @@ 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])); -} - /* This function will only work on uint32_t-aligned pointers! */ static bool same_hdr(const void *_d0, const void *_d1) { @@ -502,7 +493,7 @@ void __hot wlan_tx(struct dma_desc *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; @@ -655,253 +646,6 @@ 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 (data > end || 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; @@ -956,8 +700,8 @@ static unsigned int wlan_rx_filter(struct dma_desc *desc) #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 */ @@ -1157,9 +901,7 @@ 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) diff --git a/carlfw/src/wol.c b/carlfw/src/wol.c new file mode 100644 index 0000000..c13e036 --- /dev/null +++ b/carlfw/src/wol.c @@ -0,0 +1,287 @@ +/* + * carl9170 firmware - used by the ar9170 wireless device + * + * WakeUp on WLAN functions + * + * Copyright 2011 Christian Lamparter + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "carl9170.h" +#include "shared/phy.h" +#include "timer.h" +#include "wl.h" +#include "printf.h" +#include "rf.h" +#include "wol.h" +#include "linux/ieee80211.h" + +#ifdef CONFIG_CARL9170FW_WOL + +void wol_cmd(const struct carl9170_wol_cmd *cmd) +{ + memcpy(&fw.wol.cmd, cmd, sizeof(cmd)); +} + +void wol_prepare(void) +{ + /* set MAC filter */ + memcpy((void *)AR9170_MAC_REG_MAC_ADDR_L, fw.wol.cmd.mac, 6); + memcpy((void *)AR9170_MAC_REG_BSSID_L, fw.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.wol.last_null = fw.wol.last_beacon = get_clock_counter(); +} + +#ifdef CONFIG_CARL9170FW_WOL_NL80211_TRIGGERS +static bool wlan_rx_wol_magic_packet(const struct ieee80211_hdr *hdr, const 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.wol.lost_null = 0; + else + fw.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.wol.cmd.bssid, 6); + memcpy(null->addr2, fw.wol.cmd.mac, 6); + memcpy(null->addr3, fw.wol.cmd.bssid, 6); + + wlan_tx_fw(&nullf->s, wlan_wol_connect_callback); +} + +static bool wlan_rx_wol_disconnect(const unsigned int rx_filter, + const struct ieee80211_hdr *hdr, + const 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.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(const struct ieee80211_hdr *hdr, const 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 (data > end || scan[i] != data[i]) + return false; + } + + return true; + } + + return false; +} +#endif /* CONFIG_CARL9170FW_WOL_PROBE_REQUEST */ + +void wol_rx(const unsigned int rx_filter __unused, const struct ieee80211_hdr *hdr __unused, const unsigned int len __unused) +{ +#ifdef CONFIG_CARL9170FW_WOL_NL80211_TRIGGERS + /* Disconnect is always enabled */ + if (fw.wol.cmd.flags & CARL9170_WOL_DISCONNECT && + rx_filter & CARL9170_RX_FILTER_MGMT) + fw.wol.wake_up |= wlan_rx_wol_disconnect(rx_filter, hdr, len); + + if (fw.wol.cmd.flags & CARL9170_WOL_MAGIC_PKT && + rx_filter & CARL9170_RX_FILTER_DATA) + fw.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.wol.wake_up |= wlan_rx_wol_probe_ssid(hdr, len); +#endif /* CONFIG_CARL9170FW_WOL_PROBE_REQUEST */ +} + +void wol_janitor(void) +{ + if (unlikely(fw.suspend_mode == CARL9170_HOST_SUSPENDED)) { +#ifdef CONFIG_CARL9170FW_WOL_NL80211_TRIGGERS + if (fw.wol.cmd.flags & CARL9170_WOL_DISCONNECT) { + /* + * connection lost after 10sec without receiving + * a beacon + */ + if (is_after_msecs(fw.wol.last_beacon, 10000)) + fw.wol.wake_up |= true; + + if (fw.wol.cmd.null_interval && + is_after_msecs(fw.wol.last_null, fw.wol.cmd.null_interval)) + wlan_wol_connection_monitor(); + + if (fw.wol.lost_null >= 5) + fw.wol.wake_up |= true; + } +#endif /* CONFIG_CARL9170FW_WOL_NL80211_TRIGGERS */ + + if (fw.wol.wake_up) { + fw.suspend_mode = CARL9170_AWAKE_HOST; + set(AR9170_USB_REG_WAKE_UP, AR9170_USB_WAKE_UP_WAKE); + } + } +} +#else + +#endif /* CONFIG_CARL9170FW_WOL */ diff --git a/carlfw/usb/main.c b/carlfw/usb/main.c index cdaf760..890970c 100644 --- a/carlfw/usb/main.c +++ b/carlfw/usb/main.c @@ -23,12 +23,13 @@ #include "carl9170.h" +#include "shared/phy.h" #include "hostif.h" #include "printf.h" #include "timer.h" #include "rom.h" #include "wl.h" -#include "shared/phy.h" +#include "wol.h" #ifdef CONFIG_CARL9170FW_DEBUG_USB void usb_putc(const char c) @@ -386,13 +387,13 @@ static void usb_handler(uint8_t usb_interrupt_level1) #ifdef CONFIG_CARL9170FW_WOL if (!(fw.usb.device_feature & USB_DEVICE_REMOTE_WAKEUP) || - !fw.wlan.wol.cmd.flags) { + !fw.wol.cmd.flags) { disable_watchdog(); /* GO_TO_SUSPEND stops the CPU clock too. */ orb(AR9170_USB_REG_MAIN_CTRL, AR9170_USB_MAIN_CTRL_GO_TO_SUSPEND); } else { - wlan_prepare_wol(); + wol_prepare(); } #else /* CONFIG_CARL9170FW_WOL */ disable_watchdog(); -- 2.31.1