[4/5] wifi: rtw89: add support for HW encryption in unicast management frames

Message ID	20240731070506.46100-5-pkshih@realtek.com
State	New
Headers	show Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C275216CD03 for <linux-wireless@vger.kernel.org>; Wed, 31 Jul 2024 07:05:43 +0000 (UTC) code: ctloc85258 From: Ping-Ke Shih <pkshih@realtek.com> To: <linux-wireless@vger.kernel.org> CC: <gary.chang@realtek.com>, <dian_syuan0116@realtek.com>, <damon.chen@realtek.com>, <phhuang@realtek.com> Subject: [PATCH 4/5] wifi: rtw89: add support for HW encryption in unicast management frames Date: Wed, 31 Jul 2024 15:05:05 +0800 Message-ID: <20240731070506.46100-5-pkshih@realtek.com> In-Reply-To: <20240731070506.46100-1-pkshih@realtek.com> References: <20240731070506.46100-1-pkshih@realtek.com> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain
Series	wifi: rtw89: increase 8922a firmware format to 1 and support HW encryption for unicast management \| expand [0/5] wifi: rtw89: increase 8922a firmware format to 1 and support HW encryption for unicast mana... [1/5] wifi: rtw89: 8922a: new implementation for RFK pre-notify H2C [2/5] wifi: rtw89: 8922a: Add new fields for scan offload H2C command [3/5] wifi: rtw89: avoid to add interface to list twice when SER [4/5] wifi: rtw89: add support for HW encryption in unicast management frames [5/5] wifi: rtw89: correct VHT TX rate on 20MHz connection

diff --git a/drivers/net/wireless/realtek/rtw89/cam.c b/drivers/net/wireless/realtek/rtw89/cam.c index 4557c6e035a9..4476fc7e53db 100644 --- a/drivers/net/wireless/realtek/rtw89/cam.c +++ b/drivers/net/wireless/realtek/rtw89/cam.c @@ -384,20 +384,24 @@ int rtw89_cam_sec_key_add(struct rtw89_dev *rtwdev, break; case WLAN_CIPHER_SUITE_CCMP: hw_key_type = RTW89_SEC_KEY_TYPE_CCMP128; - key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; + if (!chip->hw_mgmt_tx_encrypt) + key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; break; case WLAN_CIPHER_SUITE_CCMP_256: hw_key_type = RTW89_SEC_KEY_TYPE_CCMP256; - key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; + if (!chip->hw_mgmt_tx_encrypt) + key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; ext_key = true; break; case WLAN_CIPHER_SUITE_GCMP: hw_key_type = RTW89_SEC_KEY_TYPE_GCMP128; - key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; + if (!chip->hw_mgmt_tx_encrypt) + key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; break; case WLAN_CIPHER_SUITE_GCMP_256: hw_key_type = RTW89_SEC_KEY_TYPE_GCMP256; - key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; + if (!chip->hw_mgmt_tx_encrypt) + key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; ext_key = true; break; case WLAN_CIPHER_SUITE_AES_CMAC: diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c index 871ad32c3056..652aa50ffc01 100644 --- a/drivers/net/wireless/realtek/rtw89/core.c +++ b/drivers/net/wireless/realtek/rtw89/core.c @@ -602,15 +602,28 @@ static u8 rtw89_core_tx_get_mac_id(struct rtw89_dev *rtwdev, return rtwsta->mac_id; } +static void rtw89_core_tx_update_llc_hdr(struct rtw89_dev *rtwdev, + struct rtw89_tx_desc_info *desc_info, + struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (void *)skb->data; + __le16 fc = hdr->frame_control; + + desc_info->hdr_llc_len = ieee80211_hdrlen(fc); + desc_info->hdr_llc_len >>= 1; /* in unit of 2 bytes */ +} + static void rtw89_core_tx_update_mgmt_info(struct rtw89_dev *rtwdev, struct rtw89_core_tx_request *tx_req) { + const struct rtw89_chip_info *chip = rtwdev->chip; struct ieee80211_vif *vif = tx_req->vif; struct rtw89_vif *rtwvif = (struct rtw89_vif *)vif->drv_priv; struct rtw89_tx_desc_info *desc_info = &tx_req->desc_info; const struct rtw89_chan *chan = rtw89_chan_get(rtwdev, rtwvif->chanctx_idx); + struct sk_buff *skb = tx_req->skb; u8 qsel, ch_dma; qsel = desc_info->hiq ? RTW89_TX_QSEL_B0_HI : RTW89_TX_QSEL_B0_MGMT; @@ -629,6 +642,11 @@ rtw89_core_tx_update_mgmt_info(struct rtw89_dev *rtwdev, desc_info->dis_data_fb = true; desc_info->data_rate = rtw89_core_get_mgmt_rate(rtwdev, tx_req, chan); + if (chip->hw_mgmt_tx_encrypt && IEEE80211_SKB_CB(skb)->control.hw_key) { + rtw89_core_tx_update_sec_key(rtwdev, tx_req); + rtw89_core_tx_update_llc_hdr(rtwdev, desc_info, skb); + } + rtw89_debug(rtwdev, RTW89_DBG_TXRX, "tx mgmt frame with rate 0x%x on channel %d (band %d, bw %d)\n", desc_info->data_rate, chan->channel, chan->band_type, @@ -862,17 +880,6 @@ rtw89_core_tx_btc_spec_pkt_notify(struct rtw89_dev *rtwdev, return PACKET_MAX; } -static void rtw89_core_tx_update_llc_hdr(struct rtw89_dev *rtwdev, - struct rtw89_tx_desc_info *desc_info, - struct sk_buff *skb) -{ - struct ieee80211_hdr *hdr = (void *)skb->data; - __le16 fc = hdr->frame_control; - - desc_info->hdr_llc_len = ieee80211_hdrlen(fc); - desc_info->hdr_llc_len >>= 1; /* in unit of 2 bytes */ -} - static void rtw89_core_tx_wake(struct rtw89_dev *rtwdev, struct rtw89_core_tx_request *tx_req) diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h index ba2ac5cefc50..5a9e028117a2 100644 --- a/drivers/net/wireless/realtek/rtw89/core.h +++ b/drivers/net/wireless/realtek/rtw89/core.h @@ -4175,6 +4175,7 @@ struct rtw89_chip_info { bool ul_tb_waveform_ctrl; bool ul_tb_pwr_diff; bool hw_sec_hdr; + bool hw_mgmt_tx_encrypt; u8 rf_path_num; u8 tx_nss; u8 rx_nss; diff --git a/drivers/net/wireless/realtek/rtw89/mac.c b/drivers/net/wireless/realtek/rtw89/mac.c index 7f2ca16bedcc..58676ec0dde8 100644 --- a/drivers/net/wireless/realtek/rtw89/mac.c +++ b/drivers/net/wireless/realtek/rtw89/mac.c @@ -2032,11 +2032,16 @@ int rtw89_mac_resize_ple_rx_quota(struct rtw89_dev *rtwdev, bool wow) void rtw89_mac_hw_mgnt_sec(struct rtw89_dev *rtwdev, bool enable) { + const struct rtw89_chip_info *chip = rtwdev->chip; u32 msk32 = B_AX_UC_MGNT_DEC | B_AX_BMC_MGNT_DEC; if (rtwdev->chip->chip_gen != RTW89_CHIP_AX) return; + /* 8852C enable B_AX_UC_MGNT_DEC by default */ + if (chip->chip_id == RTL8852C) + msk32 = B_AX_BMC_MGNT_DEC; + if (enable) rtw89_write32_set(rtwdev, R_AX_SEC_ENG_CTRL, msk32); else @@ -2261,6 +2266,8 @@ static int sec_eng_init_ax(struct rtw89_dev *rtwdev) /* init TX encryption */ val |= (B_AX_SEC_TX_ENC | B_AX_SEC_RX_DEC); val |= (B_AX_MC_DEC | B_AX_BC_DEC); + if (chip->chip_id == RTL8852C) + val |= B_AX_UC_MGNT_DEC; if (chip->chip_id == RTL8852A || chip->chip_id == RTL8852B || chip->chip_id == RTL8851B) val &= ~B_AX_TX_PARTIAL_MODE; diff --git a/drivers/net/wireless/realtek/rtw89/rtw8851b.c b/drivers/net/wireless/realtek/rtw89/rtw8851b.c index c181d88a299e..d66c190044d6 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8851b.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8851b.c @@ -2464,6 +2464,7 @@ const struct rtw89_chip_info rtw8851b_chip_info = { .ul_tb_waveform_ctrl = true, .ul_tb_pwr_diff = false, .hw_sec_hdr = false, + .hw_mgmt_tx_encrypt = false, .rf_path_num = 1, .tx_nss = 1, .rx_nss = 1, diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852a.c b/drivers/net/wireless/realtek/rtw89/rtw8852a.c index 9856e90b837e..48fe1446bd47 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8852a.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8852a.c @@ -2179,6 +2179,7 @@ const struct rtw89_chip_info rtw8852a_chip_info = { .ul_tb_waveform_ctrl = false, .ul_tb_pwr_diff = false, .hw_sec_hdr = false, + .hw_mgmt_tx_encrypt = false, .rf_path_num = 2, .tx_nss = 2, .rx_nss = 2, diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852b.c b/drivers/net/wireless/realtek/rtw89/rtw8852b.c index 019223312c6c..03a8ccd45108 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8852b.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8852b.c @@ -819,6 +819,7 @@ const struct rtw89_chip_info rtw8852b_chip_info = { .ul_tb_waveform_ctrl = true, .ul_tb_pwr_diff = false, .hw_sec_hdr = false, + .hw_mgmt_tx_encrypt = false, .rf_path_num = 2, .tx_nss = 2, .rx_nss = 2, diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852bt.c b/drivers/net/wireless/realtek/rtw89/rtw8852bt.c index e54bafb0fd45..2f16e5a7c0f2 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8852bt.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8852bt.c @@ -752,6 +752,7 @@ const struct rtw89_chip_info rtw8852bt_chip_info = { .ul_tb_waveform_ctrl = true, .ul_tb_pwr_diff = false, .hw_sec_hdr = false, + .hw_mgmt_tx_encrypt = false, .rf_path_num = 2, .tx_nss = 2, .rx_nss = 2, diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852c.c b/drivers/net/wireless/realtek/rtw89/rtw8852c.c index 8f35f887242e..66d3fa32407d 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8852c.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8852c.c @@ -2960,6 +2960,7 @@ const struct rtw89_chip_info rtw8852c_chip_info = { .ul_tb_waveform_ctrl = false, .ul_tb_pwr_diff = true, .hw_sec_hdr = true, + .hw_mgmt_tx_encrypt = true, .rf_path_num = 2, .tx_nss = 2, .rx_nss = 2, diff --git a/drivers/net/wireless/realtek/rtw89/rtw8922a.c b/drivers/net/wireless/realtek/rtw89/rtw8922a.c index 747912736a2f..93baa7506cf0 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8922a.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8922a.c @@ -2563,6 +2563,7 @@ const struct rtw89_chip_info rtw8922a_chip_info = { .ul_tb_waveform_ctrl = false, .ul_tb_pwr_diff = false, .hw_sec_hdr = true, + .hw_mgmt_tx_encrypt = true, .rf_path_num = 2, .tx_nss = 2, .rx_nss = 2,

[4/5] wifi: rtw89: add support for HW encryption in unicast management frames

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