From nobody Sun Dec 28 23:17:44 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21138C4167B for ; Mon, 4 Dec 2023 20:58:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346266AbjLDU56 (ORCPT ); Mon, 4 Dec 2023 15:57:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35276 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235458AbjLDU5a (ORCPT ); Mon, 4 Dec 2023 15:57:30 -0500 Received: from new4-smtp.messagingengine.com (new4-smtp.messagingengine.com [66.111.4.230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E456173B; Mon, 4 Dec 2023 12:57:12 -0800 (PST) Received: from compute6.internal (compute6.nyi.internal [10.202.2.47]) by mailnew.nyi.internal (Postfix) with ESMTP id 90418580A6A; Mon, 4 Dec 2023 15:57:11 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute6.internal (MEProxy); Mon, 04 Dec 2023 15:57:11 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dxuuu.xyz; h=cc :cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm3; t=1701723431; x= 1701730631; bh=Xy5DWhMcuaQWz9hFzj8IU9Hd0UISUG5+/EyW9nquCao=; b=f QoXufqYcQIqHDb6el7DTUJd0fBEdJBUVU5fChFUUxqhhNptIPWA2GRfZjS5By+kM TSZmQy0jNI4S4C3Xzcf3SQxzfJaIp/4rzSJwhtM3BLXoAcPtTYwhRdUtsc7Cq+YQ /vNbJhiEN+Ih45VmOsGphKUYIfa4A4q/ZPylcUTjClRfYMa/DICvhVYDcC4HIZ8H K8hgEexMFRkSPklKC373I8YYyKagom68fe9bWDqJZIEI3n92ydmOfPDPNJKSS9tb e4gjLLKfV8FYwNwiYqCqvEtH5YJKa3aMV4e1WyPkqejMUzTinX5ew+VlBFTNVdSv 7Em7dEUtrLlCGLAo/lEkQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; t=1701723431; x= 1701730631; bh=Xy5DWhMcuaQWz9hFzj8IU9Hd0UISUG5+/EyW9nquCao=; b=a 0G1dJFA48CvQe6gUE0On96JanSsLf7wueO3F1B4613z0EoYzIg2yB63UoGRCsIsQ NHF3yMLdOovVFVpDNXfv1ncdAlBYvn2Zns/c/XcqOYOc9+Z7y3YQYE9pvp6pVlhf FYyPUI/egIzvJMLHKr/1/CPKLENAfHBOLsbJH5XcwoxrE+8u6du607mPmAE+3HLv BzrhJinolZmi0agqWryGkTo/eGouP5Hzkhr6GJIjXTE4+HXreHRA6NVoIFWqMctv gPaZFilQ9twbCtVNEIFHXehy43p3fzOp/Ryynnqo1IOhwaVTd0/X70xKevH4cZKD mkJXAU7wBQtbF5mIEKDVw== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvkedrudejiedgudeggecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecufghrlhcuvffnffculdefhedmnecujfgurhephf fvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepffgrnhhivghlucgiuhcu oegugihusegugihuuhhurdighiiiqeenucggtffrrghtthgvrhhnpefgfefggeejhfduie ekvdeuteffleeifeeuvdfhheejleejjeekgfffgefhtddtteenucevlhhushhtvghrufhi iigvpedunecurfgrrhgrmhepmhgrihhlfhhrohhmpegugihusegugihuuhhurdighiii X-ME-Proxy: Feedback-ID: i6a694271:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 4 Dec 2023 15:57:09 -0500 (EST) From: Daniel Xu To: daniel@iogearbox.net, ast@kernel.org, davem@davemloft.net, hawk@kernel.org, john.fastabend@gmail.com, andrii@kernel.org, kuba@kernel.org, shuah@kernel.org, steffen.klassert@secunet.com, antony.antony@secunet.com, alexei.starovoitov@gmail.com, yonghong.song@linux.dev, eddyz87@gmail.com Cc: mykolal@fb.com, martin.lau@linux.dev, song@kernel.org, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, devel@linux-ipsec.org Subject: [PATCH bpf-next v4 10/10] bpf: xfrm: Add selftest for bpf_xdp_get_xfrm_state() Date: Mon, 4 Dec 2023 13:56:30 -0700 Message-ID: X-Mailer: git-send-email 2.42.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This commit extends test_tunnel selftest to test the new XDP xfrm state lookup kfunc. Co-developed-by: Antony Antony Signed-off-by: Antony Antony Signed-off-by: Daniel Xu --- .../selftests/bpf/prog_tests/test_tunnel.c | 20 ++++++-- .../selftests/bpf/progs/test_tunnel_kern.c | 51 +++++++++++++++++++ 2 files changed, 67 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c b/tools/t= esting/selftests/bpf/prog_tests/test_tunnel.c index 2d7f8fa82ebd..fc804095d578 100644 --- a/tools/testing/selftests/bpf/prog_tests/test_tunnel.c +++ b/tools/testing/selftests/bpf/prog_tests/test_tunnel.c @@ -278,7 +278,7 @@ static int add_xfrm_tunnel(void) SYS(fail, "ip netns exec at_ns0 " "ip xfrm state add src %s dst %s proto esp " - "spi %d reqid 1 mode tunnel " + "spi %d reqid 1 mode tunnel replay-window 42 " "auth-trunc 'hmac(sha1)' %s 96 enc 'cbc(aes)' %s", IP4_ADDR_VETH0, IP4_ADDR1_VETH1, XFRM_SPI_IN_TO_OUT, XFRM_AUTH, XFRM_= ENC); SYS(fail, @@ -292,7 +292,7 @@ static int add_xfrm_tunnel(void) SYS(fail, "ip netns exec at_ns0 " "ip xfrm state add src %s dst %s proto esp " - "spi %d reqid 2 mode tunnel " + "spi %d reqid 2 mode tunnel replay-window 42 " "auth-trunc 'hmac(sha1)' %s 96 enc 'cbc(aes)' %s", IP4_ADDR1_VETH1, IP4_ADDR_VETH0, XFRM_SPI_OUT_TO_IN, XFRM_AUTH, XFRM_= ENC); SYS(fail, @@ -313,7 +313,7 @@ static int add_xfrm_tunnel(void) */ SYS(fail, "ip xfrm state add src %s dst %s proto esp " - "spi %d reqid 1 mode tunnel " + "spi %d reqid 1 mode tunnel replay-window 42 " "auth-trunc 'hmac(sha1)' %s 96 enc 'cbc(aes)' %s", IP4_ADDR_VETH0, IP4_ADDR1_VETH1, XFRM_SPI_IN_TO_OUT, XFRM_AUTH, XFRM_= ENC); SYS(fail, @@ -325,7 +325,7 @@ static int add_xfrm_tunnel(void) /* root -> at_ns0 */ SYS(fail, "ip xfrm state add src %s dst %s proto esp " - "spi %d reqid 2 mode tunnel " + "spi %d reqid 2 mode tunnel replay-window 42 " "auth-trunc 'hmac(sha1)' %s 96 enc 'cbc(aes)' %s", IP4_ADDR1_VETH1, IP4_ADDR_VETH0, XFRM_SPI_OUT_TO_IN, XFRM_AUTH, XFRM_= ENC); SYS(fail, @@ -628,8 +628,10 @@ static void test_xfrm_tunnel(void) { DECLARE_LIBBPF_OPTS(bpf_tc_hook, tc_hook, .attach_point =3D BPF_TC_INGRESS); + LIBBPF_OPTS(bpf_xdp_attach_opts, opts); struct test_tunnel_kern *skel =3D NULL; struct nstoken *nstoken; + int xdp_prog_fd; int tc_prog_fd; int ifindex; int err; @@ -654,6 +656,14 @@ static void test_xfrm_tunnel(void) if (attach_tc_prog(&tc_hook, tc_prog_fd, -1)) goto done; =20 + /* attach xdp prog to tunnel dev */ + xdp_prog_fd =3D bpf_program__fd(skel->progs.xfrm_get_state_xdp); + if (!ASSERT_GE(xdp_prog_fd, 0, "bpf_program__fd")) + goto done; + err =3D bpf_xdp_attach(ifindex, xdp_prog_fd, XDP_FLAGS_REPLACE, &opts); + if (!ASSERT_OK(err, "bpf_xdp_attach")) + goto done; + /* ping from at_ns0 namespace test */ nstoken =3D open_netns("at_ns0"); err =3D test_ping(AF_INET, IP4_ADDR_TUNL_DEV1); @@ -667,6 +677,8 @@ static void test_xfrm_tunnel(void) goto done; if (!ASSERT_EQ(skel->bss->xfrm_remote_ip, 0xac100164, "remote_ip")) goto done; + if (!ASSERT_EQ(skel->bss->xfrm_replay_window, 42, "replay_window")) + goto done; =20 done: delete_xfrm_tunnel(); diff --git a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c b/tools/t= esting/selftests/bpf/progs/test_tunnel_kern.c index 3a59eb9c34de..c0dd38616562 100644 --- a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c +++ b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c @@ -30,6 +30,10 @@ int bpf_skb_set_fou_encap(struct __sk_buff *skb_ctx, struct bpf_fou_encap *encap, int type) __ksym; int bpf_skb_get_fou_encap(struct __sk_buff *skb_ctx, struct bpf_fou_encap *encap) __ksym; +struct xfrm_state * +bpf_xdp_get_xfrm_state(struct xdp_md *ctx, struct bpf_xfrm_state_opts *opt= s, + u32 opts__sz) __ksym; +void bpf_xdp_xfrm_state_release(struct xfrm_state *x) __ksym; =20 struct { __uint(type, BPF_MAP_TYPE_ARRAY); @@ -950,4 +954,51 @@ int xfrm_get_state(struct __sk_buff *skb) return TC_ACT_OK; } =20 +volatile int xfrm_replay_window =3D 0; + +SEC("xdp") +int xfrm_get_state_xdp(struct xdp_md *xdp) +{ + struct bpf_xfrm_state_opts opts =3D {}; + struct xfrm_state *x =3D NULL; + struct ip_esp_hdr *esph; + struct bpf_dynptr ptr; + u8 esph_buf[8] =3D {}; + u8 iph_buf[20] =3D {}; + struct iphdr *iph; + u32 off; + + if (bpf_dynptr_from_xdp(xdp, 0, &ptr)) + goto out; + + off =3D sizeof(struct ethhdr); + iph =3D bpf_dynptr_slice(&ptr, off, iph_buf, sizeof(iph_buf)); + if (!iph || iph->protocol !=3D IPPROTO_ESP) + goto out; + + off +=3D sizeof(struct iphdr); + esph =3D bpf_dynptr_slice(&ptr, off, esph_buf, sizeof(esph_buf)); + if (!esph) + goto out; + + opts.netns_id =3D BPF_F_CURRENT_NETNS; + opts.daddr.a4 =3D iph->daddr; + opts.spi =3D esph->spi; + opts.proto =3D IPPROTO_ESP; + opts.family =3D AF_INET; + + x =3D bpf_xdp_get_xfrm_state(xdp, &opts, sizeof(opts)); + if (!x || opts.error) + goto out; + + if (!x->replay_esn) + goto out; + + xfrm_replay_window =3D x->replay_esn->replay_window; +out: + if (x) + bpf_xdp_xfrm_state_release(x); + return XDP_PASS; +} + char _license[] SEC("license") =3D "GPL"; --=20 2.42.1