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GET /api/patches/55258/?format=api
{ "id": 55258, "url": "http://patches.dpdk.org/api/patches/55258/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/20190624164714.6560-3-stephen@networkplumber.org/", "project": { "id": 1, "url": "http://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20190624164714.6560-3-stephen@networkplumber.org>", "list_archive_url": "https://inbox.dpdk.org/dev/20190624164714.6560-3-stephen@networkplumber.org", "date": "2019-06-24T16:47:07", "name": "[v6,2/9] kni: use netdev_alloc_skb", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "90099b272c4c852a8204644d5e9e81ec81b54c23", "submitter": { "id": 27, "url": "http://patches.dpdk.org/api/people/27/?format=api", "name": "Stephen Hemminger", "email": "stephen@networkplumber.org" }, "delegate": { "id": 1, "url": "http://patches.dpdk.org/api/users/1/?format=api", "username": "tmonjalo", "first_name": "Thomas", "last_name": "Monjalon", "email": "thomas@monjalon.net" }, "mbox": "http://patches.dpdk.org/project/dpdk/patch/20190624164714.6560-3-stephen@networkplumber.org/mbox/", "series": [ { "id": 5138, "url": "http://patches.dpdk.org/api/series/5138/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=5138", "date": "2019-06-24T16:47:05", "name": "kni: fixes and cleanups", "version": 6, "mbox": "http://patches.dpdk.org/series/5138/mbox/" } ], "comments": "http://patches.dpdk.org/api/patches/55258/comments/", "check": "fail", "checks": "http://patches.dpdk.org/api/patches/55258/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 0037C1BD20;\n\tMon, 24 Jun 2019 18:47:31 +0200 (CEST)", "from mail-pf1-f194.google.com (mail-pf1-f194.google.com\n\t[209.85.210.194]) by dpdk.org (Postfix) with ESMTP id 756561BCEA\n\tfor <dev@dpdk.org>; Mon, 24 Jun 2019 18:47:24 +0200 (CEST)", "by mail-pf1-f194.google.com with SMTP id i189so7828412pfg.10\n\tfor <dev@dpdk.org>; Mon, 24 Jun 2019 09:47:24 -0700 (PDT)", "from hermes.lan (204-195-22-127.wavecable.com. [204.195.22.127])\n\tby smtp.gmail.com with ESMTPSA id\n\tf7sm12814023pfd.43.2019.06.24.09.47.22\n\t(version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256);\n\tMon, 24 Jun 2019 09:47:22 -0700 (PDT)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=networkplumber-org.20150623.gappssmtp.com; s=20150623;\n\th=from:to:cc:subject:date:message-id:in-reply-to:references\n\t:mime-version:content-transfer-encoding;\n\tbh=oe0geve82kPbeuTLEhiKxz5m43I4cyFj8lTlsw5/DJo=;\n\tb=ZvAXs+NaadqfMp+txId9DNOcxjlGmhuWxpQru14fcBvoRfVS/6iWv2Bm0QASICNk8i\n\t4sf1KcF6waMoq//AU90i6IW1RJuGGIExJGsaNF8LnCZR6vKy4Q70rAqclZl/GILKme62\n\tdBxasuXIndMNUPCkqOpCtDrj9p25i/JlwCXCx50Xppne2LW+BkLvTedan7WRS4w1OwID\n\taxOG2ikHicasmX3I6KPtNCB/yegpYhVpShQDdQ4Px0FexQe/lRBS/nQemqb4Ou2AkzEY\n\tdRxxjnAuLAm7Sndr5Kda5VTt8x2ryDzfa5JVbQr2mPMRuUU3o0dJiSBThlsJyYqHdjuu\n\tQLoQ==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references:mime-version:content-transfer-encoding;\n\tbh=oe0geve82kPbeuTLEhiKxz5m43I4cyFj8lTlsw5/DJo=;\n\tb=Gx2BNlR0cTZycvZd0ytWacYEqFt7U0/su5AoTGxtuxvOAoVtqHJ6GG8iIVDTUm5D4p\n\tXdID/IS2OgTHAjka9paKWZaNDyNb+kWxv7XnWKlVhHmDlt16q5kN+XWtN9lWPBmu+YRC\n\t0IZwQMGtCksAHx6i3FWHkOFu0t2xUHuetNFAMAPhWcW5fC2+3hGcYtMqPbQX0VS+JVHv\n\teeFm1k711gbTpxltcMp5WpeYjsUXHiYJq69mSWKXx8Y63dFkQtqOnwqB0IibZWrexrOD\n\t3y4suUaIwpys3hMRkl2hedpbyaimebHIqqlx+4WcwlbAb87jcNKGjk/X8kcCWc9m5mC8\n\tBUAg==", "X-Gm-Message-State": "APjAAAWvxgHRbHoigtE8k0ArTHez6EBUYZHDMY7QWlrGEgXz+XP2OXQE\n\tieK+vnjtigZmpcpx5PHWLC7ycFL/Nhs=", "X-Google-Smtp-Source": "APXvYqxTAaqv1itYmnVXFndABZsB57ZSh6DREI09Rg8pb6zs4WeaEu8QbmC4jlFR4r7QzbbtHjwtzA==", "X-Received": "by 2002:a63:d84e:: with SMTP id\n\tk14mr34016898pgj.234.1561394843288; \n\tMon, 24 Jun 2019 09:47:23 -0700 (PDT)", "From": "Stephen Hemminger <stephen@networkplumber.org>", "To": "dev@dpdk.org", "Cc": "Stephen Hemminger <stephen@networkplumber.org>", "Date": "Mon, 24 Jun 2019 09:47:07 -0700", "Message-Id": "<20190624164714.6560-3-stephen@networkplumber.org>", "X-Mailer": "git-send-email 2.20.1", "In-Reply-To": "<20190624164714.6560-1-stephen@networkplumber.org>", "References": "<20190610175155.21374-1-stephen@networkplumber.org>\n\t<20190624164714.6560-1-stephen@networkplumber.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[dpdk-dev] [PATCH v6 2/9] kni: use netdev_alloc_skb", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "netdev_alloc_skb is optimized to any alignment or setup\nof skb->dev that is required. The kernel has chosen to not pad\npackets on x86 (for many years), because it is faster.\n\nSigned-off-by: Stephen Hemminger <stephen@networkplumber.org>\n---\n kernel/linux/kni/kni_net.c | 17 +++--------------\n 1 file changed, 3 insertions(+), 14 deletions(-)", "diff": "diff --git a/kernel/linux/kni/kni_net.c b/kernel/linux/kni/kni_net.c\nindex c86337d099ab..cce5e7eb991f 100644\n--- a/kernel/linux/kni/kni_net.c\n+++ b/kernel/linux/kni/kni_net.c\n@@ -340,16 +340,13 @@ kni_net_rx_normal(struct kni_dev *kni)\n \t\tdata_kva = kva2data_kva(kva);\n \t\tkni->va[i] = pa2va(kni->pa[i], kva);\n \n-\t\tskb = dev_alloc_skb(len + 2);\n+\t\tskb = netdev_alloc_skb(dev, len);\n \t\tif (!skb) {\n \t\t\t/* Update statistics */\n \t\t\tkni->stats.rx_dropped++;\n \t\t\tcontinue;\n \t\t}\n \n-\t\t/* Align IP on 16B boundary */\n-\t\tskb_reserve(skb, 2);\n-\n \t\tif (kva->nb_segs == 1) {\n \t\t\tmemcpy(skb_put(skb, len), data_kva, len);\n \t\t} else {\n@@ -368,7 +365,6 @@ kni_net_rx_normal(struct kni_dev *kni)\n \t\t\t}\n \t\t}\n \n-\t\tskb->dev = dev;\n \t\tskb->protocol = eth_type_trans(skb, dev);\n \t\tskb->ip_summed = CHECKSUM_UNNECESSARY;\n \n@@ -512,26 +508,20 @@ kni_net_rx_lo_fifo_skb(struct kni_dev *kni)\n \t\tdata_kva = kva2data_kva(kva);\n \t\tkni->va[i] = pa2va(kni->pa[i], kva);\n \n-\t\tskb = dev_alloc_skb(len + 2);\n+\t\tskb = netdev_alloc_skb(dev, len);\n \t\tif (skb) {\n-\t\t\t/* Align IP on 16B boundary */\n-\t\t\tskb_reserve(skb, 2);\n \t\t\tmemcpy(skb_put(skb, len), data_kva, len);\n-\t\t\tskb->dev = dev;\n \t\t\tskb->ip_summed = CHECKSUM_UNNECESSARY;\n \t\t\tdev_kfree_skb(skb);\n \t\t}\n \n \t\t/* Simulate real usage, allocate/copy skb twice */\n-\t\tskb = dev_alloc_skb(len + 2);\n+\t\tskb = netdev_alloc_skb(dev, len);\n \t\tif (skb == NULL) {\n \t\t\tkni->stats.rx_dropped++;\n \t\t\tcontinue;\n \t\t}\n \n-\t\t/* Align IP on 16B boundary */\n-\t\tskb_reserve(skb, 2);\n-\n \t\tif (kva->nb_segs == 1) {\n \t\t\tmemcpy(skb_put(skb, len), data_kva, len);\n \t\t} else {\n@@ -550,7 +540,6 @@ kni_net_rx_lo_fifo_skb(struct kni_dev *kni)\n \t\t\t}\n \t\t}\n \n-\t\tskb->dev = dev;\n \t\tskb->ip_summed = CHECKSUM_UNNECESSARY;\n \n \t\tkni->stats.rx_bytes += len;\n", "prefixes": [ "v6", "2/9" ] }