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Miller" , Jakub Kicinski , Petar Penkov , Lorenz Bauer , Eric Dumazet , Maxim Mikityanskiy Subject: [PATCH bpf v2 1/4] bpf: Use ipv6_only_sock in bpf_tcp_gen_syncookie Date: Mon, 24 Jan 2022 17:11:43 +0200 Message-ID: <20220124151146.376446-2-maximmi@nvidia.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220124151146.376446-1-maximmi@nvidia.com> References: <20220124151146.376446-1-maximmi@nvidia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: a0d78fd4-1ad9-4db5-c384-08d9df4c029b X-MS-TrafficTypeDiagnostic: DM5PR1201MB0012:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1169; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:12.22.5.238;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(4636009)(40470700004)(36840700001)(46966006)(8676002)(7416002)(5660300002)(2906002)(86362001)(81166007)(36860700001)(4744005)(107886003)(4326008)(8936002)(1076003)(356005)(82310400004)(7696005)(26005)(54906003)(186003)(316002)(47076005)(110136005)(426003)(336012)(36756003)(508600001)(83380400001)(40460700003)(6666004)(2616005)(70206006)(70586007)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jan 2022 15:13:00.2188 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a0d78fd4-1ad9-4db5-c384-08d9df4c029b X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.238];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT054.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR1201MB0012 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Instead of querying the sk_ipv6only field directly, use the dedicated ipv6_only_sock helper. Fixes: 70d66244317e ("bpf: add bpf_tcp_gen_syncookie helper") Signed-off-by: Maxim Mikityanskiy Reviewed-by: Tariq Toukan --- net/core/filter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/filter.c b/net/core/filter.c index 4603b7cd3cd1..05efa691b796 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -6848,7 +6848,7 @@ BPF_CALL_5(bpf_tcp_gen_syncookie, struct sock *, sk, void *, iph, u32, iph_len, */ switch (((struct iphdr *)iph)->version) { case 4: - if (sk->sk_family == AF_INET6 && sk->sk_ipv6only) + if (sk->sk_family == AF_INET6 && ipv6_only_sock(sk)) return -EINVAL; mss = tcp_v4_get_syncookie(sk, iph, th, &cookie); -- 2.30.2