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Miller" , Jakub Kicinski , "Jesper Dangaard Brouer" , John Fastabend , "Andrii Nakryiko" , Martin KaFai Lau , Song Liu , Yonghong Song , KP Singh , Maxim Mikityanskiy Subject: [PATCH bpf] selftests/bpf: Fix xdp_synproxy build failure if CONFIG_NF_CONNTRACK=m/n Date: Fri, 8 Jul 2022 16:03:19 +0300 Message-ID: <20220708130319.1016294-1-maximmi@nvidia.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 5b65a0b8-00ce-4b1d-d923-08da60e240b6 X-MS-TrafficTypeDiagnostic: MN2PR12MB4190:EE_ 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:12.22.5.235;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(13230016)(4636009)(346002)(39860400002)(376002)(136003)(396003)(46966006)(36840700001)(40470700004)(336012)(426003)(83380400001)(186003)(8676002)(110136005)(40480700001)(70206006)(47076005)(70586007)(1076003)(36756003)(4326008)(107886003)(26005)(54906003)(7696005)(2616005)(86362001)(82310400005)(41300700001)(7416002)(6666004)(356005)(2906002)(81166007)(316002)(5660300002)(36860700001)(478600001)(8936002)(40460700003)(82740400003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Jul 2022 13:03:28.9696 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5b65a0b8-00ce-4b1d-d923-08da60e240b6 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.235];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT054.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4190 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org When CONFIG_NF_CONNTRACK=m, struct bpf_ct_opts and enum member BPF_F_CURRENT_NETNS are not exposed. This commit allows building the xdp_synproxy selftest in such cases. Note that nf_conntrack must be loaded before running the test if it's compiled as a module. This commit also allows this selftest to be successfully compiled when CONFIG_NF_CONNTRACK is disabled. One unused local variable of type struct bpf_ct_opts is also removed. Reported-by: Yauheni Kaliuta Signed-off-by: Maxim Mikityanskiy Fixes: fb5cd0ce70d4 ("selftests/bpf: Add selftests for raw syncookie helpers") --- .../selftests/bpf/progs/xdp_synproxy_kern.c | 24 +++++++++++++------ 1 file changed, 17 insertions(+), 7 deletions(-) diff --git a/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c b/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c index 9fd62e94b5e6..736686e903f6 100644 --- a/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c +++ b/tools/testing/selftests/bpf/progs/xdp_synproxy_kern.c @@ -77,16 +77,30 @@ struct { __uint(max_entries, MAX_ALLOWED_PORTS); } allowed_ports SEC(".maps"); +/* Some symbols defined in net/netfilter/nf_conntrack_bpf.c are unavailable in + * vmlinux.h if CONFIG_NF_CONNTRACK=m, so they are redefined locally. + */ + +struct bpf_ct_opts___local { + s32 netns_id; + s32 error; + u8 l4proto; + u8 dir; + u8 reserved[2]; +} __attribute__((preserve_access_index)); + +#define BPF_F_CURRENT_NETNS (-1) + extern struct nf_conn *bpf_xdp_ct_lookup(struct xdp_md *xdp_ctx, struct bpf_sock_tuple *bpf_tuple, __u32 len_tuple, - struct bpf_ct_opts *opts, + struct bpf_ct_opts___local *opts, __u32 len_opts) __ksym; extern struct nf_conn *bpf_skb_ct_lookup(struct __sk_buff *skb_ctx, struct bpf_sock_tuple *bpf_tuple, u32 len_tuple, - struct bpf_ct_opts *opts, + struct bpf_ct_opts___local *opts, u32 len_opts) __ksym; extern void bpf_ct_release(struct nf_conn *ct) __ksym; @@ -393,7 +407,7 @@ static __always_inline int tcp_dissect(void *data, void *data_end, static __always_inline int tcp_lookup(void *ctx, struct header_pointers *hdr, bool xdp) { - struct bpf_ct_opts ct_lookup_opts = { + struct bpf_ct_opts___local ct_lookup_opts = { .netns_id = BPF_F_CURRENT_NETNS, .l4proto = IPPROTO_TCP, }; @@ -714,10 +728,6 @@ static __always_inline int syncookie_handle_ack(struct header_pointers *hdr) static __always_inline int syncookie_part1(void *ctx, void *data, void *data_end, struct header_pointers *hdr, bool xdp) { - struct bpf_ct_opts ct_lookup_opts = { - .netns_id = BPF_F_CURRENT_NETNS, - .l4proto = IPPROTO_TCP, - }; int ret; ret = tcp_dissect(data, data_end, hdr);