Migrate test case from bpf/test_sock_addr.c ensuring that sendmsg respects when sendmsg6 hooks rewrite the destination IP with the IPv6 wildcard IP, [::].
Signed-off-by: Jordan Rife jrife@google.com --- .../selftests/bpf/prog_tests/sock_addr.c | 17 ++++++++++++++++ .../selftests/bpf/progs/sendmsg6_prog.c | 20 +++++++++++++++++++ tools/testing/selftests/bpf/test_sock_addr.c | 20 ------------------- 3 files changed, 37 insertions(+), 20 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/sock_addr.c b/tools/testing/selftests/bpf/prog_tests/sock_addr.c index f096203171b17..e3c450d11b9ef 100644 --- a/tools/testing/selftests/bpf/prog_tests/sock_addr.c +++ b/tools/testing/selftests/bpf/prog_tests/sock_addr.c @@ -448,6 +448,7 @@ BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_prog); BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_deny_prog); BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_preserve_dst_prog); BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_v4mapped_prog); +BPF_SKEL_FUNCS(sendmsg6_prog, sendmsg_v6_wildcard_prog); BPF_SKEL_FUNCS(sendmsg_unix_prog, sendmsg_unix_prog); BPF_SKEL_FUNCS(recvmsg4_prog, recvmsg4_prog); BPF_SKEL_FUNCS(recvmsg6_prog, recvmsg6_prog); @@ -849,6 +850,22 @@ static struct sock_addr_test tests[] = { SRC6_REWRITE_IP, SYSCALL_ENOTSUPP, }, + { + SOCK_ADDR_TEST_SENDMSG, + "sendmsg6: sendmsg dst IP = [::] (BSD'ism) (dgram)", + sendmsg_v6_wildcard_prog_load, + sendmsg_v6_wildcard_prog_destroy, + BPF_CGROUP_UDP6_SENDMSG, + &user_ops, + AF_INET6, + SOCK_DGRAM, + SERV6_IP, + SERV6_PORT, + SERV6_REWRITE_IP, + SERV6_REWRITE_PORT, + SRC6_REWRITE_IP, + SUCCESS, + }, { SOCK_ADDR_TEST_SENDMSG, "sendmsg_unix: sendmsg (dgram)", diff --git a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c index 7611d9e17dd16..36a7f960799f0 100644 --- a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c +++ b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c @@ -84,6 +84,26 @@ int sendmsg_v6_v4mapped_prog(struct bpf_sock_addr *ctx) return 1; }
+SEC("cgroup/sendmsg6") +int sendmsg_v6_wildcard_prog(struct bpf_sock_addr *ctx) +{ + /* Rewrite source. */ + ctx->msg_src_ip6[0] = bpf_htonl(SRC_REWRITE_IP6_0); + ctx->msg_src_ip6[1] = bpf_htonl(SRC_REWRITE_IP6_1); + ctx->msg_src_ip6[2] = bpf_htonl(SRC_REWRITE_IP6_2); + ctx->msg_src_ip6[3] = bpf_htonl(SRC_REWRITE_IP6_3); + + /* Rewrite destination. */ + ctx->user_ip6[0] = bpf_htonl(0); + ctx->user_ip6[1] = bpf_htonl(0); + ctx->user_ip6[2] = bpf_htonl(0); + ctx->user_ip6[3] = bpf_htonl(0); + + ctx->user_port = bpf_htons(DST_REWRITE_PORT6); + + return 1; +} + SEC("cgroup/sendmsg6") int sendmsg_v6_preserve_dst_prog(struct bpf_sock_addr *ctx) { diff --git a/tools/testing/selftests/bpf/test_sock_addr.c b/tools/testing/selftests/bpf/test_sock_addr.c index 4ead113753f81..85fb2a793be50 100644 --- a/tools/testing/selftests/bpf/test_sock_addr.c +++ b/tools/testing/selftests/bpf/test_sock_addr.c @@ -94,7 +94,6 @@ static int connect4_prog_load(const struct sock_addr_test *test); static int connect6_prog_load(const struct sock_addr_test *test); static int sendmsg4_rw_asm_prog_load(const struct sock_addr_test *test); static int sendmsg6_rw_asm_prog_load(const struct sock_addr_test *test); -static int sendmsg6_rw_wildcard_prog_load(const struct sock_addr_test *test);
static struct sock_addr_test tests[] = { /* bind */ @@ -298,20 +297,6 @@ static struct sock_addr_test tests[] = { SRC6_REWRITE_IP, SUCCESS, }, - { - "sendmsg6: set dst IP = [::] (BSD'ism)", - sendmsg6_rw_wildcard_prog_load, - BPF_CGROUP_UDP6_SENDMSG, - BPF_CGROUP_UDP6_SENDMSG, - AF_INET6, - SOCK_DGRAM, - SERV6_IP, - SERV6_PORT, - SERV6_REWRITE_IP, - SERV6_REWRITE_PORT, - SRC6_REWRITE_IP, - SUCCESS, - }, };
static int load_insns(const struct sock_addr_test *test, @@ -497,11 +482,6 @@ static int sendmsg6_rw_asm_prog_load(const struct sock_addr_test *test) return sendmsg6_rw_dst_asm_prog_load(test, SERV6_REWRITE_IP); }
-static int sendmsg6_rw_wildcard_prog_load(const struct sock_addr_test *test) -{ - return sendmsg6_rw_dst_asm_prog_load(test, WILDCARD6_IP); -} - static int cmp_addr(const struct sockaddr_storage *addr1, const struct sockaddr_storage *addr2, int cmp_port) {