From patchwork Wed Aug 19 01:07:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Maciej_=C5=BBenczykowski?= X-Patchwork-Id: 1347362 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=StO/KDkr; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BWV4c0FjHz9sPf for ; Wed, 19 Aug 2020 11:07:28 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727104AbgHSBH1 (ORCPT ); Tue, 18 Aug 2020 21:07:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39352 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727018AbgHSBHY (ORCPT ); Tue, 18 Aug 2020 21:07:24 -0400 Received: from mail-pj1-x1041.google.com (mail-pj1-x1041.google.com [IPv6:2607:f8b0:4864:20::1041]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B8D82C061389; Tue, 18 Aug 2020 18:07:23 -0700 (PDT) Received: by mail-pj1-x1041.google.com with SMTP id mt12so334756pjb.4; Tue, 18 Aug 2020 18:07:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=mzBSluQ6mqyIVMuRi2ojSGjM+D4X/wlWcsHhPwNSdIU=; b=StO/KDkryIDm355jHPzc2OJN+l25RHo2rsDNfvr+/2cPMEa9yrHeIOXAC0/BrW+Gmn vtf4riwT4cJDSaWR04ESXNad4C0nIfo/WXuwnqBXUXq0aTY65sE0EvErddFnBKLdckXG IvjishHENFX2YV0IBCZTo8mmrs4DAKTXmJPQ/NBNgXbN92h/+4T+ap2AtS7VqPJ/WLe3 K+y8kOGCEI2cv5AUYy45j59jYZisoWL15ocDjQnfXzRK7lYRfY/WAMBov6Qzjc+qq5HC 7/U9eTANzkKXcSvdX6VgOp23Vh/9+2vg7n0C0bus0HapepcXRPYkkRq1ZsAgv4ycfWQZ M6dg== 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=mzBSluQ6mqyIVMuRi2ojSGjM+D4X/wlWcsHhPwNSdIU=; b=e/m085B5QDzSxqB2HW9Q928SVSzjq6rnwmqa89J1xr87vyDPZcH8feNrfMlqJga/GG B5WcdGh5erT1hXWBCOarjhL9wd8ORgog76syCBX697TbI/VNVQyX9P00oqBgmTLllNCB pgCxYVTxjDOihbBliOMWBbxqlGjKLTyR2DD7X7cY2ZZdHSN1z+G4tGLrb+1hTXKKaSDZ 0wWgb8OeWq5PVsd7glHOyQsMrQBgNh9YecH84+b/gFYqAQ3GmNiZ8Bv6dAmBWtryTNR8 htiDyZ5RtaQGH1fO1UL66zqrZ7OEJzZ6KgPnOiBBhrRsRQKBHRoSgfd7+HfGYuJsviDt 17kg== X-Gm-Message-State: AOAM533E1BLA6gUJZ1XB9W67uwj204wM7KKpy9b9InEmFWOb7wNjinBJ xpKy/OClmRRPkS7tJ7l9yeI= X-Google-Smtp-Source: ABdhPJwyvJ/T5PYNuVUQilWtQeYqkoX46QhAdfXd0VeN7ukEkYw/rlecjQttxxkbL99vUKhPMZiXIQ== X-Received: by 2002:a17:902:7897:: with SMTP id q23mr17417597pll.310.1597799243274; Tue, 18 Aug 2020 18:07:23 -0700 (PDT) Received: from athina.mtv.corp.google.com ([2620:15c:211:0:a28c:fdff:fee1:f370]) by smtp.gmail.com with ESMTPSA id 193sm25881853pfu.169.2020.08.18.18.07.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Aug 2020 18:07:22 -0700 (PDT) From: =?utf-8?q?Maciej_=C5=BBenczykowski?= To: =?utf-8?q?Maciej_=C5=BBenczykowski?= , Alexei Starovoitov , Daniel Borkmann Cc: Linux Network Development Mailing List , Linux Kernel Mailing List , BPF Mailing List , "David S . Miller" Subject: [PATCH bpf-next 2/2] net-tun: eliminate two tun/xdp related function calls from vhost-net Date: Tue, 18 Aug 2020 18:07:10 -0700 Message-Id: <20200819010710.3959310-2-zenczykowski@gmail.com> X-Mailer: git-send-email 2.28.0.220.ged08abb693-goog In-Reply-To: <20200819010710.3959310-1-zenczykowski@gmail.com> References: <20200819010710.3959310-1-zenczykowski@gmail.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Maciej Żenczykowski This provides a minor performance boost by virtue of inlining instead of cross module function calls. Test: builds Signed-off-by: Maciej Żenczykowski --- drivers/net/tun.c | 18 ------------------ include/linux/if_tun.h | 15 ++++++++++++--- 2 files changed, 12 insertions(+), 21 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 5dd7f353eeef..efaef83b8897 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -219,24 +219,6 @@ struct veth { __be16 h_vlan_TCI; }; -bool tun_is_xdp_frame(void *ptr) -{ - return (unsigned long)ptr & TUN_XDP_FLAG; -} -EXPORT_SYMBOL(tun_is_xdp_frame); - -void *tun_xdp_to_ptr(struct xdp_frame *xdp) -{ - return (void *)((unsigned long)xdp | TUN_XDP_FLAG); -} -EXPORT_SYMBOL(tun_xdp_to_ptr); - -struct xdp_frame *tun_ptr_to_xdp(void *ptr) -{ - return (void *)((unsigned long)ptr & ~TUN_XDP_FLAG); -} -EXPORT_SYMBOL(tun_ptr_to_xdp); - static int tun_napi_receive(struct napi_struct *napi, int budget) { struct tun_file *tfile = container_of(napi, struct tun_file, napi); diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h index 6c37e1dbc5df..2a7660843444 100644 --- a/include/linux/if_tun.h +++ b/include/linux/if_tun.h @@ -27,9 +27,18 @@ struct tun_xdp_hdr { #if defined(CONFIG_TUN) || defined(CONFIG_TUN_MODULE) struct socket *tun_get_socket(struct file *); struct ptr_ring *tun_get_tx_ring(struct file *file); -bool tun_is_xdp_frame(void *ptr); -void *tun_xdp_to_ptr(struct xdp_frame *xdp); -struct xdp_frame *tun_ptr_to_xdp(void *ptr); +static inline bool tun_is_xdp_frame(void *ptr) +{ + return (unsigned long)ptr & TUN_XDP_FLAG; +} +static inline void *tun_xdp_to_ptr(struct xdp_frame *xdp) +{ + return (void *)((unsigned long)xdp | TUN_XDP_FLAG); +} +static inline struct xdp_frame *tun_ptr_to_xdp(void *ptr) +{ + return (void *)((unsigned long)ptr & ~TUN_XDP_FLAG); +} void tun_ptr_free(void *ptr); #else #include