From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2AB22CD98E1 for ; Wed, 17 Jun 2026 03:35:50 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id BAD7F40E3F; Wed, 17 Jun 2026 05:35:00 +0200 (CEST) Received: from smtpbgau2.qq.com (smtpbgau2.qq.com [54.206.34.216]) by mails.dpdk.org (Postfix) with ESMTP id A177940DFB; Wed, 17 Jun 2026 05:34:54 +0200 (CEST) X-QQ-mid: esmtpsz11t1781667286t27f6b5b3 X-QQ-Originating-IP: f9nl7caSpOEls1Tl1xc7tWoM+8WIXq4U4vWM9pfW8to= Received: from DSK-zaiyuwang.trustnetic.com ( [183.157.22.210]) by bizesmtp.qq.com (ESMTP) with id ; Wed, 17 Jun 2026 11:34:45 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 2350816823847591339 EX-QQ-RecipientCnt: 5 From: Zaiyu Wang To: dev@dpdk.org Cc: Zaiyu Wang , stable@dpdk.org, Jiawen Wu , Ferruh Yigit Subject: [PATCH v7 11/21] net/txgbe: fix traffic class priority configuration Date: Wed, 17 Jun 2026 11:33:49 +0800 Message-Id: <20260617033400.376-12-zaiyuwang@trustnetic.com> X-Mailer: git-send-email 2.21.0.windows.1 In-Reply-To: <20260617033400.376-1-zaiyuwang@trustnetic.com> References: <20260423034024.14404-1-zaiyuwang@trustnetic.com> <20260617033400.376-1-zaiyuwang@trustnetic.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:trustnetic.com:qybglogicsvrsz:qybglogicsvrsz3b-0 X-QQ-XMAILINFO: N7uMf/cKLdHSnKljG7N2SY4ClF53eVwEbDyYg2NiCSyFmFyE+I2JHkcS LSnsmG6Yq2HBTmnK2Wx+PmIyck3wPhaWbrNSEXxac0zjYgp0eOATzxwmnvKtmA4Lg8TeSZY aK2fxLtyrA6kYBMQX8rl6xMb2us0JOOrgpAAP5OFJnpAkYeECYA30gMQ9e2phz+hyeSNgaF S/LCWJXE7h+cVPjch5KwEBYZ/oD24O33Q4KC01bF2TUKfyVNhK7GXlg+7tNSxIkRypapGMs GhaW4RDJLjQOVC/UQe+mLhDvm9fmlE4KlN0JWn2ZglSgX+hqHQf8AF92tSiH5xLEyJLSoWL rROuyRxKHfEUt5QTIwDi7Hr3/R7xcEDDC34cS7TzMW4138XhISlirsIh5fMtVPS4rK1d860 t66cwxPfOFxCzTnWP7uG5B/bdNyJ61Q68DEo5AK91n9kqhIUurBT38I7Dtdb+aMuQMGFFXh qkdVy8HvmH3nDBUSLQ2uM8jIT0V9VvRwQDazNFafyHDIrl2/og4h7R9aEV58qPfp+uVdjPe fyAOvEsxD2Er/YzSWVZ23ZH500XPagi60l2ze8CmIgnSXODtd6ejdtDkiE1pI9uJgYYo3be 2SbXeOU8jqP/ajtqk0QQCw596M4B0iJj6NXU01/OCEEPEzSBNio6yV6PkA++JBplJktXw15 YKuxnf+IZEikTJydVoigN1YYO+RAUinispQ2DYl7Z2r3owsnvCqz59/vmBwZeQSYIm/kgjV eUO9nVpe5ak2SGoXVYpMyeYuVA1HYGFF3vuOr2lW3502QLQimgZEN2bhPfIcg6kJZarcTjR KwPOAhRkgKIZ+onx01gijrWjQfh5hp4C4auLJIOkliq0nr1ym+hi8wWE5oazvd9TdlMCaUh sP4P7LoxioCcdCkyPNK0OhVzIHHARJA+DwhxJbs2PAKISDHSl1BuAkIJMy2baQbNsX6Svz8 7jyTxIv4aQDDYMxJqVuyPFwq9TuEtg2/f2AS9VeVyZnOcLCR4OV+hTemWWVl3MwbSBKsrcx UUxU+az5HHZEVrqgJtbFDj1IkaZzPllZ0W/6O8QboUeWnHz8Iv3k6HqHt9zIyhAV/wxDLfW hC1tYFQCNpQdIBDtZgL6smVy9+XKWHJfA== X-QQ-XMRINFO: Nq+8W0+stu50tPAe92KXseR0ZZmBTk3gLg== X-QQ-RECHKSPAM: 0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org After applying the following testpmd command, 802.1Q packets with specific priorities were not properly directed to the corresponding traffic classes: port config 0 dcb vt off 4 pfc off The old driver had two issues: 1. The hardware uses a 4-bit mapping register per traffic class for priority-to-TC mapping, but the driver incorrectly configured it as 3 bits. 2. The DCB TX configuration mistakenly wrote to the RX register. Fix both issues, ensuring that tc-prio mapping works as expected. Additionally, remove the stale and inconsistent TXGBE_DCBUP2TC_DEC macro as it has no callers. Fixes: 8bdc7882f376 ("net/txgbe: support DCB") Cc: stable@dpdk.org Signed-off-by: Zaiyu Wang --- drivers/net/txgbe/base/txgbe_dcb_hw.c | 2 +- drivers/net/txgbe/base/txgbe_regs.h | 6 ++---- drivers/net/txgbe/txgbe_rxtx.c | 7 ++----- 3 files changed, 5 insertions(+), 10 deletions(-) diff --git a/drivers/net/txgbe/base/txgbe_dcb_hw.c b/drivers/net/txgbe/base/txgbe_dcb_hw.c index 75c91a6b6a..79e1da447b 100644 --- a/drivers/net/txgbe/base/txgbe_dcb_hw.c +++ b/drivers/net/txgbe/base/txgbe_dcb_hw.c @@ -154,7 +154,7 @@ s32 txgbe_dcb_config_tx_data_arbiter_raptor(struct txgbe_hw *hw, u16 *refill, for (i = 0; i < TXGBE_DCB_UP_MAX; i++) reg |= TXGBE_DCBUP2TC_MAP(i, map[i]); - wr32(hw, TXGBE_PBRXUP2TC, reg); + wr32(hw, TXGBE_PBTXUP2TC, reg); /* Configure traffic class credits and priority */ for (i = 0; i < TXGBE_DCB_TC_MAX; i++) { diff --git a/drivers/net/txgbe/base/txgbe_regs.h b/drivers/net/txgbe/base/txgbe_regs.h index 22c46e3d56..4aa62919b4 100644 --- a/drivers/net/txgbe/base/txgbe_regs.h +++ b/drivers/net/txgbe/base/txgbe_regs.h @@ -503,10 +503,8 @@ #define TXGBE_PBRXCTL 0x019000 #define TXGBE_PBRXCTL_ST MS(0, 0x1) #define TXGBE_PBRXCTL_ENA MS(31, 0x1) -#define TXGBE_PBRXUP2TC 0x019008 #define TXGBE_PBTXUP2TC 0x01C800 -#define TXGBE_DCBUP2TC_MAP(tc, v) LS(v, 3 * (tc), 0x7) -#define TXGBE_DCBUP2TC_DEC(tc, r) RS(r, 3 * (tc), 0x7) +#define TXGBE_DCBUP2TC_MAP(tc, v) LS(v, 4 * (tc), 0x7) #define TXGBE_PBRXSIZE(tc) (0x019020 + (tc) * 4) #define TXGBE_PBRXSIZE_KB(v) LS(v, 10, 0x3FF) @@ -1705,7 +1703,7 @@ enum txgbe_5tuple_protocol { #define TXGBE_RDM_PF_HIDE(_i) (0x12090 + ((_i) * 4)) #define TXGBE_RPUP2TC 0x019008 -#define TXGBE_RPUP2TC_UP_SHIFT 3 +#define TXGBE_RPUP2TC_UP_SHIFT 4 #define TXGBE_RPUP2TC_UP_MASK 0x7 #define TXGBE_RDM_DCACHE_CTL 0x0120A8 diff --git a/drivers/net/txgbe/txgbe_rxtx.c b/drivers/net/txgbe/txgbe_rxtx.c index 2d0c4989d9..4611124b68 100644 --- a/drivers/net/txgbe/txgbe_rxtx.c +++ b/drivers/net/txgbe/txgbe_rxtx.c @@ -3378,11 +3378,8 @@ txgbe_vmdq_dcb_configure(struct rte_eth_dev *dev) queue_mapping = 0; for (i = 0; i < RTE_ETH_DCB_NUM_USER_PRIORITIES; i++) - /* - * mapping is done with 3 bits per priority, - * so shift by i*3 each time - */ - queue_mapping |= ((cfg->dcb_tc[i] & 0x07) << (i * 3)); + queue_mapping |= ((cfg->dcb_tc[i] & TXGBE_RPUP2TC_UP_MASK) << + (i * TXGBE_RPUP2TC_UP_SHIFT)); wr32(hw, TXGBE_RPUP2TC, queue_mapping); -- 2.21.0.windows.1