Return-path: Received: from mail-ig0-f181.google.com ([209.85.213.181]:36181 "EHLO mail-ig0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750812AbbFAToY (ORCPT ); Mon, 1 Jun 2015 15:44:24 -0400 Received: by igbpi8 with SMTP id pi8so70036941igb.1 for ; Mon, 01 Jun 2015 12:44:23 -0700 (PDT) From: David Liu To: ath10k@lists.infradead.org Cc: linux-wireless@vger.kernel.org, kvalo@qca.qualcomm.com, David Liu Subject: [PATCH 1/2] ath10k: add cryptmode param to support sw crypto and raw tx injection. Date: Mon, 1 Jun 2015 12:44:03 -0700 Message-Id: <1433187843-20698-1-git-send-email-cfliu.tw@gmail.com> (sfid-20150601_214428_313476_DEE9ABA6) Sender: linux-wireless-owner@vger.kernel.org List-ID: This change supports bypassing HW crypto engine by enabling raw Rx/Tx mode. This will enable use cases such as sw crypto and raw tx injection. This change introduces a new module param 'cryptmode'. cryptmode: 0 Use HW crypto engine. Use native WiFi mode Tx/Rx encap 1 Use SW crypto engine. Use raw mode Tx/Rx encap 2 Supports both SW & HW crypto engine. Use raw mode Tx/Rx encap. Testing: used QCA988x hw 2.0 with 10.2 firmware. ath10k cryptmode param Testing Status ------- --------------------------------- 0 HW CCMP/TKIP tested ok. Note: HW crypto bypass not supported by ath10k hw in native WiFi mode. 1 - mac80211 SW crypto tested ok. (Req. mac80211 change) - raw Tx frame injection tested ok. 2 HW CCMP/TKIP tested ok. - BSS 1 tested HW CCMP/TKIP ok. - BSS 2 can bypass HW engine. - Tested mac80211 cam do SW crypto. (Req. mac80211 change) - Tested raw Tx encrypted frame injection. Signed-off-by: David Liu --- drivers/net/wireless/ath/ath10k/core.c | 17 +++++++++ drivers/net/wireless/ath/ath10k/core.h | 24 ++++++++++++- drivers/net/wireless/ath/ath10k/htt_rx.c | 3 +- drivers/net/wireless/ath/ath10k/htt_tx.c | 3 ++ drivers/net/wireless/ath/ath10k/hw.h | 2 +- drivers/net/wireless/ath/ath10k/mac.c | 61 +++++++++++++++++++++++++++----- drivers/net/wireless/ath/ath10k/wmi.c | 6 ++-- 7 files changed, 102 insertions(+), 14 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 59496a9..e91fc85 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -31,16 +31,19 @@ #include "wmi-ops.h" unsigned int ath10k_debug_mask; +bool ath10k_cryptmode_param; static bool uart_print; static bool skip_otp; module_param_named(debug_mask, ath10k_debug_mask, uint, 0644); +module_param_named(cryptmode, ath10k_cryptmode_param, bool, 0644); module_param(uart_print, bool, 0644); module_param(skip_otp, bool, 0644); MODULE_PARM_DESC(debug_mask, "Debugging mask"); MODULE_PARM_DESC(uart_print, "Uart target debugging"); MODULE_PARM_DESC(skip_otp, "Skip otp failure for calibration in testmode"); +MODULE_PARM_DESC(cryptmode, "Crypto mode - 0: HW only, 1: SW only, 2:Both"); static const struct ath10k_hw_params ath10k_hw_params_list[] = { { @@ -991,6 +994,20 @@ static int ath10k_core_init_firmware_features(struct ath10k *ar) return -EINVAL; } + if (ath10k_cryptmode_param == ATH10K_CRYPT_MODE_HW) { + clear_bit(ATH10K_RAW_MODE, &ar->dev_flags); + clear_bit(ATH10K_HW_CRYPTO_DISABLED, &ar->dev_flags); + } else { + if (!test_bit(ATH10K_FW_FEATURE_RAW_MODE_SUPPORT, + ar->fw_features)) { + ath10k_err(ar, "cryptmode > 0 requires raw mode support from firmware"); + return -EINVAL; + } + set_bit(ATH10K_RAW_MODE, &ar->dev_flags); + if (ath10k_cryptmode_param == ATH10K_CRYPT_MODE_SW) + set_bit(ATH10K_HW_CRYPTO_DISABLED, &ar->dev_flags); + } + /* Backwards compatibility for firmwares without * ATH10K_FW_IE_WMI_OP_VERSION. */ diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index 45f9603..13799c8 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -91,6 +91,7 @@ struct ath10k_skb_cb { u8 tid; u16 freq; bool is_offchan; + bool nohwcrypt; struct ath10k_htt_txbuf *txbuf; u32 txbuf_paddr; } __packed htt; @@ -349,6 +350,7 @@ struct ath10k_vif { } u; bool use_cts_prot; + bool nohwcrypt; int num_legacy_stations; int txpower; struct wmi_wmm_params_all_arg wmm_params; @@ -461,7 +463,12 @@ enum ath10k_fw_features { ATH10K_FW_FEATURE_WOWLAN_SUPPORT = 6, /* Don't trust error code from otp.bin */ - ATH10K_FW_FEATURE_IGNORE_OTP_RESULT, + ATH10K_FW_FEATURE_IGNORE_OTP_RESULT = 7, + + /* Raw mode support. If supported, FW supports receiving and trasmitting + * frames in raw mode + */ + ATH10K_FW_FEATURE_RAW_MODE_SUPPORT = 8, /* Some firmware revisions pad 4th hw address to 4 byte boundary making * it 8 bytes long in Native Wifi Rx decap. @@ -484,6 +491,12 @@ enum ath10k_dev_flags { * waiters should immediately cancel instead of waiting for a time out. */ ATH10K_FLAG_CRASH_FLUSH, + + /* Use Raw mode for Tx and Rx */ + ATH10K_RAW_MODE, + + /* Disable HW crypto engine */ + ATH10K_HW_CRYPTO_DISABLED, }; enum ath10k_cal_mode { @@ -492,6 +505,15 @@ enum ath10k_cal_mode { ATH10K_CAL_MODE_DT, }; +enum ath10k_crypt_mode { + /* Use HW crypto engine only */ + ATH10K_CRYPT_MODE_HW, + /* HW SW crypto engine only (ie. HW crypto engine disabled) */ + ATH10K_CRYPT_MODE_SW, + /* Both SW & HW crypto engine supported */ + ATH10K_CRYPT_MODE_HW_SW, +}; + static inline const char *ath10k_cal_mode_str(enum ath10k_cal_mode mode) { switch (mode) { diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 89eb16b..a7df05d 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -1018,8 +1018,7 @@ static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar, /* In most cases this will be true for sniffed frames. It makes sense * to deliver them as-is without stripping the crypto param. This would - * also make sense for software based decryption (which is not - * implemented in ath10k). + * also make sense for software based decryption. * * If there's no error then the frame is decrypted. At least that is * the case for frames that come in via fragmented rx indication. diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c index a60ef7d..18446d9 100644 --- a/drivers/net/wireless/ath/ath10k/htt_tx.c +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c @@ -508,6 +508,9 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) prefetch_len); skb_cb->htt.txbuf->htc_hdr.flags = 0; + if (skb_cb->htt.nohwcrypt) + flags0 |= HTT_DATA_TX_DESC_FLAGS0_NO_ENCRYPT; + if (!skb_cb->is_protected) flags0 |= HTT_DATA_TX_DESC_FLAGS0_NO_ENCRYPT; diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h index 85cca29..37fd2f83 100644 --- a/drivers/net/wireless/ath/ath10k/hw.h +++ b/drivers/net/wireless/ath/ath10k/hw.h @@ -296,7 +296,7 @@ enum ath10k_hw_rate_cck { #define TARGET_10X_RX_SKIP_DEFRAG_TIMEOUT_DUP_DETECTION_CHECK 1 #define TARGET_10X_VOW_CONFIG 0 #define TARGET_10X_NUM_MSDU_DESC (1024 + 400) -#define TARGET_10X_MAX_FRAG_ENTRIES 0 +#define TARGET_10X_MAX_FRAG_ENTRIES 10 /* 10.2 parameters */ #define TARGET_10_2_DMA_BURST_SIZE 1 diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index f4de717..d83e933 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -172,6 +172,7 @@ static int ath10k_send_key(struct ath10k_vif *arvif, .key_flags = flags, .macaddr = macaddr, }; + int ret; lockdep_assert_held(&arvif->ar->conf_mutex); @@ -184,6 +185,9 @@ static int ath10k_send_key(struct ath10k_vif *arvif, arg.key_cipher = WMI_CIPHER_TKIP; arg.key_txmic_len = 8; arg.key_rxmic_len = 8; + if (test_bit(ATH10K_RAW_MODE, &ar->dev_flags)) + key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; + break; case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: @@ -197,12 +201,24 @@ static int ath10k_send_key(struct ath10k_vif *arvif, return -EOPNOTSUPP; } + if (test_bit(ATH10K_RAW_MODE, &ar->dev_flags)) { + key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + key->flags |= IEEE80211_KEY_FLAG_RESERVE_TAILROOM; + } + + if (arvif->nohwcrypt) + cmd = DISABLE_KEY; + if (cmd == DISABLE_KEY) { arg.key_cipher = WMI_CIPHER_NONE; arg.key_data = NULL; } - return ath10k_wmi_vdev_install_key(arvif->ar, &arg); + ret = ath10k_wmi_vdev_install_key(arvif->ar, &arg); + + if (arvif->nohwcrypt && !ret) + return -EOPNOTSUPP; + return ret; } static int ath10k_install_key(struct ath10k_vif *arvif, @@ -3172,9 +3188,24 @@ ath10k_tx_h_get_txmode(struct ath10k *ar, struct ieee80211_vif *vif, if (ieee80211_is_data_present(fc) && sta && sta->tdls) return ATH10K_HW_TXRX_ETHERNET; + if (test_bit(ATH10K_RAW_MODE, &ar->dev_flags)) + return ATH10K_HW_TXRX_RAW; + return ATH10K_HW_TXRX_NATIVE_WIFI; } +static bool ath10k_tx_h_use_hwcrypto(struct ieee80211_vif *vif, + struct sk_buff *skb) { + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + const u32 mask = IEEE80211_TX_INTFL_DONT_ENCRYPT | + IEEE80211_TX_CTL_INJECTED; + if ((info->flags & mask) == mask) + return false; + if (vif) + return !ath10k_vif_to_arvif(vif)->nohwcrypt; + return true; +} + /* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS * Control in the header. */ @@ -3620,6 +3651,7 @@ static void ath10k_tx(struct ieee80211_hw *hw, ATH10K_SKB_CB(skb)->htt.is_offchan = false; ATH10K_SKB_CB(skb)->htt.freq = 0; ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr); + ATH10K_SKB_CB(skb)->htt.nohwcrypt = !ath10k_tx_h_use_hwcrypto(vif, skb); ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif); ATH10K_SKB_CB(skb)->txmode = ath10k_tx_h_get_txmode(ar, vif, sta, skb); ATH10K_SKB_CB(skb)->is_protected = ieee80211_has_protected(fc); @@ -3635,12 +3667,11 @@ static void ath10k_tx(struct ieee80211_hw *hw, ath10k_tx_h_8023(skb); break; case ATH10K_HW_TXRX_RAW: - /* FIXME: Packet injection isn't implemented. It should be - * doable with firmware 10.2 on qca988x. - */ - WARN_ON_ONCE(1); - ieee80211_free_txskb(hw, skb); - return; + if (!test_bit(ATH10K_RAW_MODE, &ar->dev_flags)) { + WARN_ON_ONCE(1); + ieee80211_free_txskb(hw, skb); + return; + } } if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) { @@ -4134,6 +4165,7 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, int bit; int i; u32 vdev_param; + u32 param_value; vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; @@ -4236,6 +4268,13 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, goto err; } } + if (test_bit(ATH10K_HW_CRYPTO_DISABLED, &ar->dev_flags)) + arvif->nohwcrypt = true; + + if (arvif->nohwcrypt && !test_bit(ATH10K_RAW_MODE, &ar->dev_flags)) { + ath10k_warn(ar, "cryptmode module param needed for sw crypto\n"); + goto err; + } ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d bcnmode %s\n", arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype, @@ -4265,8 +4304,14 @@ static int ath10k_add_interface(struct ieee80211_hw *hw, arvif->def_wep_key_idx = -1; vdev_param = ar->wmi.vdev_param->tx_encap_type; + if (test_bit(ATH10K_RAW_MODE, &ar->dev_flags)) + param_value = ATH10K_HW_TXRX_RAW; + else + param_value = ATH10K_HW_TXRX_NATIVE_WIFI; + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, - ATH10K_HW_TXRX_NATIVE_WIFI); + param_value); + /* 10.X firmware does not support this VDEV parameter. Do not warn */ if (ret && ret != -EOPNOTSUPP) { ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n", diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index 77220b0..1202150 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -508,7 +508,7 @@ static struct wmi_vdev_param_map wmi_10x_vdev_param_map = { .txbf = WMI_VDEV_PARAM_UNSUPPORTED, .packet_powersave = WMI_VDEV_PARAM_UNSUPPORTED, .drop_unencry = WMI_VDEV_PARAM_UNSUPPORTED, - .tx_encap_type = WMI_VDEV_PARAM_UNSUPPORTED, + .tx_encap_type = WMI_10X_VDEV_PARAM_TX_ENCAP_TYPE, .ap_detect_out_of_sync_sleeping_sta_time_secs = WMI_10X_VDEV_PARAM_AP_DETECT_OUT_OF_SYNC_SLEEPING_STA_TIME_SECS, }; @@ -3894,7 +3894,9 @@ static struct sk_buff *ath10k_wmi_10_2_op_gen_init(struct ath10k *ar) config.rx_timeout_pri_vi = __cpu_to_le32(TARGET_10X_RX_TIMEOUT_LO_PRI); config.rx_timeout_pri_be = __cpu_to_le32(TARGET_10X_RX_TIMEOUT_LO_PRI); config.rx_timeout_pri_bk = __cpu_to_le32(TARGET_10X_RX_TIMEOUT_HI_PRI); - config.rx_decap_mode = __cpu_to_le32(TARGET_10X_RX_DECAP_MODE); + config.rx_decap_mode = __cpu_to_le32(ATH10K_HW_TXRX_NATIVE_WIFI); + if (test_bit(ATH10K_RAW_MODE, &ar->dev_flags)) + config.rx_decap_mode = __cpu_to_le32(ATH10K_HW_TXRX_RAW); config.scan_max_pending_reqs = __cpu_to_le32(TARGET_10X_SCAN_MAX_PENDING_REQS); -- 2.1.4