From: Cong Wang <cong.w...@bytedance.com>
Factor out a common helper udp_socketpair() which creates
a pair of connected UDP sockets.
Cc: John Fastabend <john.fastab...@gmail.com>
Cc: Daniel Borkmann <dan...@iogearbox.net>
Cc: Jakub Sitnicki <ja...@cloudflare.com>
Cc: Lorenz Bauer <l...@cloudflare.com>
Signed-off-by: Cong Wang <cong.w...@bytedance.com>
---
.../selftests/bpf/prog_tests/sockmap_listen.c | 76 ++++++++++---------
1 file changed, 39 insertions(+), 37 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
index 648d9ae898d2..3d9907bcf132 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
@@ -1603,32 +1603,27 @@ static void test_reuseport(struct test_sockmap_listen
*skel,
}
}
-static void udp_redir_to_connected(int family, int sotype, int sock_mapfd,
- int verd_mapfd, enum redir_mode mode)
+static int udp_socketpair(int family, int *s, int *c)
{
- const char *log_prefix = redir_mode_str(mode);
struct sockaddr_storage addr;
- int c0, c1, p0, p1;
- unsigned int pass;
socklen_t len;
- int err, n;
- u64 value;
- u32 key;
- char b;
-
- zero_verdict_count(verd_mapfd);
+ int p0, c0;
+ int err;
- p0 = socket_loopback(family, sotype | SOCK_NONBLOCK);
+ p0 = socket_loopback(family, SOCK_DGRAM | SOCK_NONBLOCK);
if (p0 < 0)
- return;
+ return p0;
+
len = sizeof(addr);
err = xgetsockname(p0, sockaddr(&addr), &len);
if (err)
goto close_peer0;
- c0 = xsocket(family, sotype | SOCK_NONBLOCK, 0);
- if (c0 < 0)
+ c0 = xsocket(family, SOCK_DGRAM | SOCK_NONBLOCK, 0);
+ if (c0 < 0) {
+ err = c0;
goto close_peer0;
+ }
err = xconnect(c0, sockaddr(&addr), len);
if (err)
goto close_cli0;
@@ -1639,25 +1634,36 @@ static void udp_redir_to_connected(int family, int
sotype, int sock_mapfd,
if (err)
goto close_cli0;
- p1 = socket_loopback(family, sotype | SOCK_NONBLOCK);
- if (p1 < 0)
- goto close_cli0;
- err = xgetsockname(p1, sockaddr(&addr), &len);
- if (err)
- goto close_cli0;
+ *s = p0;
+ *c = c0;
+ return 0;
- c1 = xsocket(family, sotype | SOCK_NONBLOCK, 0);
- if (c1 < 0)
- goto close_peer1;
- err = xconnect(c1, sockaddr(&addr), len);
- if (err)
- goto close_cli1;
- err = xgetsockname(c1, sockaddr(&addr), &len);
+close_cli0:
+ xclose(c0);
+close_peer0:
+ xclose(p0);
+ return err;
+}
+
+static void udp_redir_to_connected(int family, int sock_mapfd, int verd_mapfd,
+ enum redir_mode mode)
+{
+ const char *log_prefix = redir_mode_str(mode);
+ int c0, c1, p0, p1;
+ unsigned int pass;
+ int err, n;
+ u64 value;
+ u32 key;
+ char b;
+
+ zero_verdict_count(verd_mapfd);
+
+ err = udp_socketpair(family, &p0, &c0);
if (err)
- goto close_cli1;
- err = xconnect(p1, sockaddr(&addr), len);
+ return;
+ err = udp_socketpair(family, &p1, &c1);
if (err)
- goto close_cli1;
+ goto close_cli0;
key = 0;
value = p0;
@@ -1694,11 +1700,9 @@ static void udp_redir_to_connected(int family, int
sotype, int sock_mapfd,
close_cli1:
xclose(c1);
-close_peer1:
xclose(p1);
close_cli0:
xclose(c0);
-close_peer0:
xclose(p0);
}
@@ -1715,11 +1719,9 @@ static void udp_skb_redir_to_connected(struct
test_sockmap_listen *skel,
return;
skel->bss->test_ingress = false;
- udp_redir_to_connected(family, SOCK_DGRAM, sock_map, verdict_map,
- REDIR_EGRESS);
+ udp_redir_to_connected(family, sock_map, verdict_map, REDIR_EGRESS);
skel->bss->test_ingress = true;
- udp_redir_to_connected(family, SOCK_DGRAM, sock_map, verdict_map,
- REDIR_INGRESS);
+ udp_redir_to_connected(family, sock_map, verdict_map, REDIR_INGRESS);
xbpf_prog_detach2(verdict, sock_map, BPF_SK_SKB_VERDICT);
}
--
2.25.1
