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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33062C4708D for ; Tue, 27 Dec 2022 03:20:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230365AbiL0DUa (ORCPT ); Mon, 26 Dec 2022 22:20:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230490AbiL0DU2 (ORCPT ); Mon, 26 Dec 2022 22:20:28 -0500 Received: from mail-qt1-x831.google.com (mail-qt1-x831.google.com [IPv6:2607:f8b0:4864:20::831]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E0F4CF3C for ; Mon, 26 Dec 2022 19:20:25 -0800 (PST) Received: by mail-qt1-x831.google.com with SMTP id h21so9647565qta.12 for ; Mon, 26 Dec 2022 19:20:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=WW1zaVF8hII4Kj8pz8b9wfU2ei2Jpo4AZHoHLHOyANk=; b=T7zEqUWQpf8oQFKh38WtNNP2tkmVjgDvraIqhHx63QwLLFgT8qUsUNtoo9s9lQSFv+ dJgupG4zJEwr4ONuxinV/ZVYC6PW5lKQNlCkopY22OTm+JjOkTrHye6wbg+Mks9k7uMq ffBWa+PxrP4doPTewQlKAjEVsIQwHVkv8GTKk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=WW1zaVF8hII4Kj8pz8b9wfU2ei2Jpo4AZHoHLHOyANk=; b=aWJojQY7eQge90KnUMgdMG/Wk0g8rRVj2lnsgze2d0o++8lzYQx6jsgJ/Cet5jg4P5 tQ2yrR2ZO5FOqhbDojVdKUGsnFZAKCt8S5Z1DQeHOX2YDpLEiKDLWj9zPOemtnGdKK7S vQzzo3qcOP8tuzvgVSiSa5KKDxE5aM10Yt24DvSiwgwNNb8FMW8+aFaqY0EwE0ZMbvE0 Xpy3kSdDLzBtE009Xafz9zbBS74s3oAjvKCVb4jsrvOmJ5YxIwsZIbg6xpdPdpCwk8NQ kPR8hdJCfeUqeuGbYusCZ9MO0JUoQr37kD0XwndxS+Vqus0WoSkpcdupMdSFe2JPt8tM 6CMw== X-Gm-Message-State: AFqh2kp5LPPGL8pBcwByq8um4xGn1wpb5hGKcqP0Fmd94zY7W2eXd3Lf HM61XNY8gWiPq7p3H/FGoZkqzw== X-Google-Smtp-Source: AMrXdXswjHwCymqNllpVRFPVhbQMeoArA++ZRCsBqt8Z/7ZW6jpQkBQwYEwkJy1HlsSqzDzLBgeLKg== X-Received: by 2002:ac8:5498:0:b0:39c:da20:602 with SMTP id h24-20020ac85498000000b0039cda200602mr29633205qtq.12.1672111224866; Mon, 26 Dec 2022 19:20:24 -0800 (PST) Received: from localhost.swdvt.lab.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id fa11-20020a05622a4ccb00b003a68fe872a5sm7751262qtb.96.2022.12.26.19.20.23 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 26 Dec 2022 19:20:24 -0800 (PST) From: Michael Chan To: davem@davemloft.net Cc: netdev@vger.kernel.org, kuba@kernel.org, edumazet@google.com, pabeni@redhat.com, bpf@vger.kernel.org, gospo@broadcom.com Subject: [PATCH net 3/5] bnxt_en: Fix XDP RX path Date: Mon, 26 Dec 2022 22:19:38 -0500 Message-Id: <1672111180-19463-4-git-send-email-michael.chan@broadcom.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1672111180-19463-1-git-send-email-michael.chan@broadcom.com> References: <1672111180-19463-1-git-send-email-michael.chan@broadcom.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000009b69fc05f0c6bb17" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org --0000000000009b69fc05f0c6bb17 The XDP program can change the starting address of the RX data buffer and this information needs to be passed back from bnxt_rx_xdp() to bnxt_rx_pkt() for the XDP_PASS case so that the SKB can point correctly to the modified buffer address. Add back the data_ptr parameter to bnxt_rx_xdp() to make this work. Fixes: b231c3f3414c ("bnxt: refactor bnxt_rx_xdp to separate xdp_init_buff/xdp_prepare_buff") Reviewed-by: Andy Gospodarek Reviewed-by: Pavan Chebbi Signed-off-by: Michael Chan --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 7 +++++-- drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h | 4 ++-- 3 files changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index b8639b7e6b2b..1acabfe26db1 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -1940,7 +1940,7 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr, } if (xdp_active) { - if (bnxt_rx_xdp(bp, rxr, cons, xdp, data, &len, event)) { + if (bnxt_rx_xdp(bp, rxr, cons, xdp, data, &data_ptr, &len, event)) { rc = 1; goto next_rx; } diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c index 1847f191577d..2ceeaa818c1c 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c @@ -222,7 +222,8 @@ void bnxt_xdp_buff_frags_free(struct bnxt_rx_ring_info *rxr, * false - packet should be passed to the stack. */ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons, - struct xdp_buff xdp, struct page *page, unsigned int *len, u8 *event) + struct xdp_buff xdp, struct page *page, u8 **data_ptr, + unsigned int *len, u8 *event) { struct bpf_prog *xdp_prog = READ_ONCE(rxr->xdp_prog); struct bnxt_tx_ring_info *txr; @@ -255,8 +256,10 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons, *event &= ~BNXT_RX_EVENT; *len = xdp.data_end - xdp.data; - if (orig_data != xdp.data) + if (orig_data != xdp.data) { offset = xdp.data - xdp.data_hard_start; + *data_ptr = xdp.data_hard_start + offset; + } switch (act) { case XDP_PASS: diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h index 2bbdb8e7c506..ea430d6961df 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h @@ -18,8 +18,8 @@ struct bnxt_sw_tx_bd *bnxt_xmit_bd(struct bnxt *bp, struct xdp_buff *xdp); void bnxt_tx_int_xdp(struct bnxt *bp, struct bnxt_napi *bnapi, int nr_pkts); bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons, - struct xdp_buff xdp, struct page *page, unsigned int *len, - u8 *event); + struct xdp_buff xdp, struct page *page, u8 **data_ptr, + unsigned int *len, u8 *event); int bnxt_xdp(struct net_device *dev, struct netdev_bpf *xdp); int bnxt_xdp_xmit(struct net_device *dev, int num_frames, struct xdp_frame **frames, u32 flags); -- 2.18.1 --0000000000009b69fc05f0c6bb17 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" 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