From patchwork Sat Feb 13 14:12:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Lobakin X-Patchwork-Id: 12086879 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 7710EC433DB for ; Sat, 13 Feb 2021 14:14:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4B53A64DEB for ; Sat, 13 Feb 2021 14:14:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229929AbhBMONu (ORCPT ); Sat, 13 Feb 2021 09:13:50 -0500 Received: from mail-40136.protonmail.ch ([185.70.40.136]:32106 "EHLO mail-40136.protonmail.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229864AbhBMONG (ORCPT ); Sat, 13 Feb 2021 09:13:06 -0500 Date: Sat, 13 Feb 2021 14:12:13 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pm.me; s=protonmail; t=1613225542; bh=HZHaNJCAig0YSUt683wmcffffm0YebCE8doSL87HOwk=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References:From; b=S5c2D1RYyY2ihUOqrHkc+DHB0YnrFkMvSb1xI0O4iX0q3O1RrEiDkq9kc08bnk1nM Ha0mxTrC3WTDynilSCnxOj8yfu7y1N7ynDhjkB6GZBz9899jHxd7bJgpnBZdpgezlZ LH5iH+n4Ze3nfhyx3h10jmzZJjVTK9vE53ORoGpml7y7i38vAnPSEC6/nRqMzoqGDe 4aFiH8h7EX51Yj/MjK5+qnAjKPCO6chvfh/RNohDhLfMve1R0uL71DtInOIJH3fgJh R2hp6/F/9d4ALUBm9JeWFoDXil6/CdxJNqIOqNuAmF66ENeENAu402/e+Nel8lt4Jl 9KZm60uoM/3vA== To: "David S. Miller" , Jakub Kicinski From: Alexander Lobakin Cc: Jonathan Lemon , Eric Dumazet , Dmitry Vyukov , Willem de Bruijn , Alexander Lobakin , Randy Dunlap , Kevin Hao , Pablo Neira Ayuso , Jakub Sitnicki , Marco Elver , Dexuan Cui , Paolo Abeni , Jesper Dangaard Brouer , Alexander Duyck , Alexander Duyck , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Taehee Yoo , Wei Wang , Cong Wang , =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= , Miaohe Lin , Guillaume Nault , Florian Westphal , Edward Cree , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Reply-To: Alexander Lobakin Subject: [PATCH v6 net-next 07/11] skbuff: move NAPI cache declarations upper in the file Message-ID: <20210213141021.87840-8-alobakin@pm.me> In-Reply-To: <20210213141021.87840-1-alobakin@pm.me> References: <20210213141021.87840-1-alobakin@pm.me> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org NAPI cache structures will be used for allocating skbuff_heads, so move their declarations a bit upper. Signed-off-by: Alexander Lobakin --- net/core/skbuff.c | 90 +++++++++++++++++++++++------------------------ 1 file changed, 45 insertions(+), 45 deletions(-) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 4be2bb969535..860a9d4f752f 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -119,6 +119,51 @@ static void skb_under_panic(struct sk_buff *skb, unsigned int sz, void *addr) skb_panic(skb, sz, addr, __func__); } +#define NAPI_SKB_CACHE_SIZE 64 + +struct napi_alloc_cache { + struct page_frag_cache page; + unsigned int skb_count; + void *skb_cache[NAPI_SKB_CACHE_SIZE]; +}; + +static DEFINE_PER_CPU(struct page_frag_cache, netdev_alloc_cache); +static DEFINE_PER_CPU(struct napi_alloc_cache, napi_alloc_cache); + +static void *__alloc_frag_align(unsigned int fragsz, gfp_t gfp_mask, + unsigned int align_mask) +{ + struct napi_alloc_cache *nc = this_cpu_ptr(&napi_alloc_cache); + + return page_frag_alloc_align(&nc->page, fragsz, gfp_mask, align_mask); +} + +void *__napi_alloc_frag_align(unsigned int fragsz, unsigned int align_mask) +{ + fragsz = SKB_DATA_ALIGN(fragsz); + + return __alloc_frag_align(fragsz, GFP_ATOMIC, align_mask); +} +EXPORT_SYMBOL(__napi_alloc_frag_align); + +void *__netdev_alloc_frag_align(unsigned int fragsz, unsigned int align_mask) +{ + struct page_frag_cache *nc; + void *data; + + fragsz = SKB_DATA_ALIGN(fragsz); + if (in_irq() || irqs_disabled()) { + nc = this_cpu_ptr(&netdev_alloc_cache); + data = page_frag_alloc_align(nc, fragsz, GFP_ATOMIC, align_mask); + } else { + local_bh_disable(); + data = __alloc_frag_align(fragsz, GFP_ATOMIC, align_mask); + local_bh_enable(); + } + return data; +} +EXPORT_SYMBOL(__netdev_alloc_frag_align); + /* Caller must provide SKB that is memset cleared */ static void __build_skb_around(struct sk_buff *skb, void *data, unsigned int frag_size) @@ -220,51 +265,6 @@ struct sk_buff *build_skb_around(struct sk_buff *skb, } EXPORT_SYMBOL(build_skb_around); -#define NAPI_SKB_CACHE_SIZE 64 - -struct napi_alloc_cache { - struct page_frag_cache page; - unsigned int skb_count; - void *skb_cache[NAPI_SKB_CACHE_SIZE]; -}; - -static DEFINE_PER_CPU(struct page_frag_cache, netdev_alloc_cache); -static DEFINE_PER_CPU(struct napi_alloc_cache, napi_alloc_cache); - -static void *__alloc_frag_align(unsigned int fragsz, gfp_t gfp_mask, - unsigned int align_mask) -{ - struct napi_alloc_cache *nc = this_cpu_ptr(&napi_alloc_cache); - - return page_frag_alloc_align(&nc->page, fragsz, gfp_mask, align_mask); -} - -void *__napi_alloc_frag_align(unsigned int fragsz, unsigned int align_mask) -{ - fragsz = SKB_DATA_ALIGN(fragsz); - - return __alloc_frag_align(fragsz, GFP_ATOMIC, align_mask); -} -EXPORT_SYMBOL(__napi_alloc_frag_align); - -void *__netdev_alloc_frag_align(unsigned int fragsz, unsigned int align_mask) -{ - struct page_frag_cache *nc; - void *data; - - fragsz = SKB_DATA_ALIGN(fragsz); - if (in_irq() || irqs_disabled()) { - nc = this_cpu_ptr(&netdev_alloc_cache); - data = page_frag_alloc_align(nc, fragsz, GFP_ATOMIC, align_mask); - } else { - local_bh_disable(); - data = __alloc_frag_align(fragsz, GFP_ATOMIC, align_mask); - local_bh_enable(); - } - return data; -} -EXPORT_SYMBOL(__netdev_alloc_frag_align); - /* * kmalloc_reserve is a wrapper around kmalloc_node_track_caller that tells * the caller if emergency pfmemalloc reserves are being used. If it is and