From patchwork Fri Oct 18 02:37:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yue Haibing X-Patchwork-Id: 1998880 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256 header.s=default header.b=gEAJkedX; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org (client-ip=140.211.166.138; helo=smtp1.osuosl.org; envelope-from=intel-wired-lan-bounces@osuosl.org; receiver=patchwork.ozlabs.org) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XV7jY4FdXz1xw2 for ; Fri, 18 Oct 2024 13:21:05 +1100 (AEDT) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 098E581471; Fri, 18 Oct 2024 02:21:02 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id q3te65jiA17N; Fri, 18 Oct 2024 02:21:01 +0000 (UTC) X-Comment: SPF check N/A for local connections - client-ip=140.211.166.142; helo=lists1.osuosl.org; envelope-from=intel-wired-lan-bounces@osuosl.org; receiver= DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org 4126281456 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org; s=default; t=1729218061; bh=eWVCCwdWtXIQEEeofb6CuQhzCixLICdV+oCauHc0JDM=; h=From:To:CC:Date:In-Reply-To:References:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=gEAJkedXCLpRnxGJh4ZBWWeIpN1WvK20/8egV9iTJOAsM0uYMsfIKEXbLCMMIYwiN A2/5DAbj50MiuKBFAtFqT6EDihU95adM7Q1EmBvw8CSpnDga7nItO9VleCi/tClq05 MW9owpmOu/VonlXm/WzRy7mk3238A0DBCONzgVAXaG5W/Unegdl8pHXTXIVTCmyf4R 8pbhq0hz8+PFrlaprHtlpSVM2fELiyH/uu3ZnKYuOgQKKKoKhLDTjY2GGRatEbf2bz 8cF2M+tydKNKD4JVdFak0zJ/6IMtpNtSj7Nbw+rT3sFuqJofYmLO79AYh9XusiC/jb A0HqWhuk8pMpw== Received: from lists1.osuosl.org (lists1.osuosl.org [140.211.166.142]) by smtp1.osuosl.org (Postfix) with ESMTP id 4126281456; Fri, 18 Oct 2024 02:21:01 +0000 (UTC) X-Original-To: intel-wired-lan@lists.osuosl.org Delivered-To: intel-wired-lan@lists.osuosl.org Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists1.osuosl.org (Postfix) with ESMTP id 651582072 for ; Fri, 18 Oct 2024 02:20:59 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 5370B40252 for ; Fri, 18 Oct 2024 02:20:59 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id awkafHZk-SGD for ; Fri, 18 Oct 2024 02:20:56 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=45.249.212.191; helo=szxga05-in.huawei.com; envelope-from=yuehaibing@huawei.com; receiver= DMARC-Filter: OpenDMARC Filter v1.4.2 smtp2.osuosl.org 193E1405DD DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 193E1405DD Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) by smtp2.osuosl.org (Postfix) with ESMTPS id 193E1405DD for ; Fri, 18 Oct 2024 02:20:54 +0000 (UTC) Received: from mail.maildlp.com (unknown [172.19.88.234]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4XV7cJ2K2lz1HLC6; Fri, 18 Oct 2024 10:16:32 +0800 (CST) Received: from dggpemf500002.china.huawei.com (unknown [7.185.36.57]) by mail.maildlp.com (Postfix) with ESMTPS id 735161400FD; Fri, 18 Oct 2024 10:20:47 +0800 (CST) Received: from huawei.com (10.175.101.6) by dggpemf500002.china.huawei.com (7.185.36.57) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 18 Oct 2024 10:20:46 +0800 From: Yue Haibing To: , , , , , , , , , , , , , , , , , CC: , , , , Date: Fri, 18 Oct 2024 10:37:32 +0800 Message-ID: <20241018023734.1912166-3-yuehaibing@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241018023734.1912166-1-yuehaibing@huawei.com> References: <20241018023734.1912166-1-yuehaibing@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemf500002.china.huawei.com (7.185.36.57) X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Subject: [Intel-wired-lan] [PATCH v2 net 2/4] igb: Fix passing 0 to ERR_PTR in igb_run_xdp() X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" igb_run_xdp() converts customed xdp action to a negative error code with the sk_buff pointer type which be checked with IS_ERR in igb_clean_rx_irq(). Remove this error pointer handing instead use plain int return value. Fixes: 9cbc948b5a20 ("igb: add XDP support") Signed-off-by: Yue Haibing --- drivers/net/ethernet/intel/igb/igb_main.c | 22 ++++++++-------------- 1 file changed, 8 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index f1d088168723..50c23dfcf304 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -8584,9 +8584,8 @@ static struct sk_buff *igb_build_skb(struct igb_ring *rx_ring, return skb; } -static struct sk_buff *igb_run_xdp(struct igb_adapter *adapter, - struct igb_ring *rx_ring, - struct xdp_buff *xdp) +static int igb_run_xdp(struct igb_adapter *adapter, struct igb_ring *rx_ring, + struct xdp_buff *xdp) { int err, result = IGB_XDP_PASS; struct bpf_prog *xdp_prog; @@ -8626,7 +8625,7 @@ static struct sk_buff *igb_run_xdp(struct igb_adapter *adapter, break; } xdp_out: - return ERR_PTR(-result); + return result; } static unsigned int igb_rx_frame_truesize(struct igb_ring *rx_ring, @@ -8752,10 +8751,6 @@ static bool igb_cleanup_headers(struct igb_ring *rx_ring, union e1000_adv_rx_desc *rx_desc, struct sk_buff *skb) { - /* XDP packets use error pointer so abort at this point */ - if (IS_ERR(skb)) - return true; - if (unlikely((igb_test_staterr(rx_desc, E1000_RXDEXT_ERR_FRAME_ERR_MASK)))) { struct net_device *netdev = rx_ring->netdev; @@ -8879,6 +8874,7 @@ static int igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) struct xdp_buff xdp; u32 frame_sz = 0; int rx_buf_pgcnt; + int xdp_res = 0; /* Frame size depend on rx_ring setup when PAGE_SIZE=4K */ #if (PAGE_SIZE < 8192) @@ -8936,12 +8932,10 @@ static int igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) /* At larger PAGE_SIZE, frame_sz depend on len size */ xdp.frame_sz = igb_rx_frame_truesize(rx_ring, size); #endif - skb = igb_run_xdp(adapter, rx_ring, &xdp); + xdp_res = igb_run_xdp(adapter, rx_ring, &xdp); } - if (IS_ERR(skb)) { - unsigned int xdp_res = -PTR_ERR(skb); - + if (xdp_res) { if (xdp_res & (IGB_XDP_TX | IGB_XDP_REDIR)) { xdp_xmit |= xdp_res; igb_rx_buffer_flip(rx_ring, rx_buffer, size); @@ -8960,7 +8954,7 @@ static int igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) &xdp, timestamp); /* exit if we failed to retrieve a buffer */ - if (!skb) { + if (!xdp_res && !skb) { rx_ring->rx_stats.alloc_failed++; rx_buffer->pagecnt_bias++; break; @@ -8974,7 +8968,7 @@ static int igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) continue; /* verify the packet layout is correct */ - if (igb_cleanup_headers(rx_ring, rx_desc, skb)) { + if (xdp_res || igb_cleanup_headers(rx_ring, rx_desc, skb)) { skb = NULL; continue; }