From patchwork Fri Jun 4 18:33:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matteo Croce X-Patchwork-Id: 12300459 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08B27C4743C for ; Fri, 4 Jun 2021 18:34:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E97D06140B for ; Fri, 4 Jun 2021 18:34:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230214AbhFDSg1 (ORCPT ); Fri, 4 Jun 2021 14:36:27 -0400 Received: from mail-ej1-f49.google.com ([209.85.218.49]:41852 "EHLO mail-ej1-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230311AbhFDSgY (ORCPT ); Fri, 4 Jun 2021 14:36:24 -0400 Received: by mail-ej1-f49.google.com with SMTP id ho18so4943545ejc.8; Fri, 04 Jun 2021 11:34:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=d5R/Y787deGXI27/C5ydk9yyfai3EZKj2N6INNdZwRE=; b=HENm+1/9g87Gj5fN4bYWSujf2JyNe55aqwgE9ymMnFP+SY1VS9ZrIgGzV8o5TIAi4v AMzdTLAW+LNmqxBAYlJ0qvQMXWiMXA0JkIJ1FTLXK2foGYw1I1/4kHmP0lZEP///N62g aHMTJjr0X29wy2U/hPBnpXDZTxlCJtVIwOtZAPeAIUHs3PN30SZ3OlE6jM5yUqH+BveO m4FMMC8JfVEFWQK6b+Wc+WtVqehr3ZBdVrmkEkAWqpb1BO0R9UL1nXYIMysEWsSQN46i U7y9yWLnsiumQADq/48CfU0sZFVeev1g8MHkpUpeLGCQa4gZDCqFZAwjIDANTU3DWQaz JT+A== X-Gm-Message-State: AOAM532DmIz8kwsl1SuAoWXugLU4dQThbdkBeCRCFHO3ctnUKo3mUulY 49BHlhUd1GjphP6uzunec6kuYdh/SgWVxA== X-Google-Smtp-Source: ABdhPJxkkRYKIDGRuSQ777kLhj0RtZhQRhx15wdcBmj23ZVlKk+eQFKyKCbrQbL7WpTDvESKUH4JbA== X-Received: by 2002:a17:907:2044:: with SMTP id pg4mr5491887ejb.447.1622831663585; Fri, 04 Jun 2021 11:34:23 -0700 (PDT) Received: from msft-t490s.teknoraver.net (net-37-119-128-179.cust.vodafonedsl.it. [37.119.128.179]) by smtp.gmail.com with ESMTPSA id k12sm3732039edi.87.2021.06.04.11.34.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Jun 2021 11:34:23 -0700 (PDT) From: Matteo Croce To: netdev@vger.kernel.org, linux-mm@kvack.org Cc: Ayush Sawal , Vinay Kumar Yadav , Rohit Maheshwari , "David S. Miller" , Jakub Kicinski , Thomas Petazzoni , Marcin Wojtas , Russell King , Mirko Lindner , Stephen Hemminger , Tariq Toukan , Jesper Dangaard Brouer , Ilias Apalodimas , Alexei Starovoitov , Daniel Borkmann , John Fastabend , Boris Pismenny , Arnd Bergmann , Andrew Morton , "Peter Zijlstra (Intel)" , Vlastimil Babka , Yu Zhao , Will Deacon , Fenghua Yu , Roman Gushchin , Hugh Dickins , Peter Xu , Jason Gunthorpe , Jonathan Lemon , Alexander Lobakin , Cong Wang , wenxu , Kevin Hao , Jakub Sitnicki , Marco Elver , Willem de Bruijn , Miaohe Lin , Yunsheng Lin , Guillaume Nault , linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, bpf@vger.kernel.org, Matthew Wilcox , Eric Dumazet , David Ahern , Lorenzo Bianconi , Saeed Mahameed , Andrew Lunn , Paolo Abeni , Sven Auhagen Subject: [PATCH net-next v7 2/5] skbuff: add a parameter to __skb_frag_unref Date: Fri, 4 Jun 2021 20:33:46 +0200 Message-Id: <20210604183349.30040-3-mcroce@linux.microsoft.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210604183349.30040-1-mcroce@linux.microsoft.com> References: <20210604183349.30040-1-mcroce@linux.microsoft.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Matteo Croce This is a prerequisite patch, the next one is enabling recycling of skbs and fragments. Add an extra argument on __skb_frag_unref() to handle recycling, and update the current users of the function with that. Signed-off-by: Matteo Croce --- drivers/net/ethernet/marvell/sky2.c | 2 +- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 2 +- include/linux/skbuff.h | 8 +++++--- net/core/skbuff.c | 4 ++-- net/tls/tls_device.c | 2 +- 5 files changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index 324c280cc22c..8b8bff59c8fe 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -2503,7 +2503,7 @@ static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space, if (length == 0) { /* don't need this page */ - __skb_frag_unref(frag); + __skb_frag_unref(frag, false); --skb_shinfo(skb)->nr_frags; } else { size = min(length, (unsigned) PAGE_SIZE); diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index e35e4d7ef4d1..cea62b8f554c 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -526,7 +526,7 @@ static int mlx4_en_complete_rx_desc(struct mlx4_en_priv *priv, fail: while (nr > 0) { nr--; - __skb_frag_unref(skb_shinfo(skb)->frags + nr); + __skb_frag_unref(skb_shinfo(skb)->frags + nr, false); } return 0; } diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index dbf820a50a39..7fcfea7e7b21 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -3081,10 +3081,12 @@ static inline void skb_frag_ref(struct sk_buff *skb, int f) /** * __skb_frag_unref - release a reference on a paged fragment. * @frag: the paged fragment + * @recycle: recycle the page if allocated via page_pool * - * Releases a reference on the paged fragment @frag. + * Releases a reference on the paged fragment @frag + * or recycles the page via the page_pool API. */ -static inline void __skb_frag_unref(skb_frag_t *frag) +static inline void __skb_frag_unref(skb_frag_t *frag, bool recycle) { put_page(skb_frag_page(frag)); } @@ -3098,7 +3100,7 @@ static inline void __skb_frag_unref(skb_frag_t *frag) */ static inline void skb_frag_unref(struct sk_buff *skb, int f) { - __skb_frag_unref(&skb_shinfo(skb)->frags[f]); + __skb_frag_unref(&skb_shinfo(skb)->frags[f], false); } /** diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 3ad22870298c..12b7e90dd2b5 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -664,7 +664,7 @@ static void skb_release_data(struct sk_buff *skb) skb_zcopy_clear(skb, true); for (i = 0; i < shinfo->nr_frags; i++) - __skb_frag_unref(&shinfo->frags[i]); + __skb_frag_unref(&shinfo->frags[i], false); if (shinfo->frag_list) kfree_skb_list(shinfo->frag_list); @@ -3495,7 +3495,7 @@ int skb_shift(struct sk_buff *tgt, struct sk_buff *skb, int shiftlen) fragto = &skb_shinfo(tgt)->frags[merge]; skb_frag_size_add(fragto, skb_frag_size(fragfrom)); - __skb_frag_unref(fragfrom); + __skb_frag_unref(fragfrom, false); } /* Reposition in the original skb */ diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c index 76a6f8c2eec4..ad11db2c4f63 100644 --- a/net/tls/tls_device.c +++ b/net/tls/tls_device.c @@ -127,7 +127,7 @@ static void destroy_record(struct tls_record_info *record) int i; for (i = 0; i < record->num_frags; i++) - __skb_frag_unref(&record->frags[i]); + __skb_frag_unref(&record->frags[i], false); kfree(record); }