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Message-ID: <20240329191907.1808635-5-jrife@google.com>
Date: Fri, 29 Mar 2024 14:18:49 -0500
From: Jordan Rife <jrife@...gle.com>
To: bpf@...r.kernel.org
Cc: Jordan Rife <jrife@...gle.com>, linux-kselftest@...r.kernel.org,
netdev@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>,
Martin KaFai Lau <martin.lau@...ux.dev>, Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>,
Yonghong Song <yonghong.song@...ux.dev>, John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...gle.com>, Hao Luo <haoluo@...gle.com>,
Jiri Olsa <jolsa@...nel.org>, Mykola Lysenko <mykolal@...com>, Shuah Khan <shuah@...nel.org>,
"David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
Jesper Dangaard Brouer <hawk@...nel.org>, Daan De Meyer <daan.j.demeyer@...il.com>
Subject: [PATCH v1 bpf-next 4/8] selftests/bpf: Add recv_msg_from_client to
network helpers
Copy recv_msg_from_client helper from test_sock_addr self test in order
to use it in the sock_addr_kern test program.
Signed-off-by: Jordan Rife <jrife@...gle.com>
---
tools/testing/selftests/bpf/network_helpers.c | 31 +++++++++++++++++++
tools/testing/selftests/bpf/network_helpers.h | 1 +
2 files changed, 32 insertions(+)
diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c
index 8eae4afe3ec3d..ef0a94d9e9d5c 100644
--- a/tools/testing/selftests/bpf/network_helpers.c
+++ b/tools/testing/selftests/bpf/network_helpers.c
@@ -498,6 +498,37 @@ int get_socket_local_port(int sock_fd)
return -1;
}
+int recvmsg_from_client(int sockfd, struct sockaddr_storage *src_addr)
+{
+ struct timeval tv;
+ struct msghdr hdr;
+ struct iovec iov;
+ char data[64];
+ fd_set rfds;
+
+ FD_ZERO(&rfds);
+ FD_SET(sockfd, &rfds);
+
+ tv.tv_sec = 2;
+ tv.tv_usec = 0;
+
+ if (select(sockfd + 1, &rfds, NULL, NULL, &tv) <= 0 ||
+ !FD_ISSET(sockfd, &rfds))
+ return -1;
+
+ memset(&iov, 0, sizeof(iov));
+ iov.iov_base = data;
+ iov.iov_len = sizeof(data);
+
+ memset(&hdr, 0, sizeof(hdr));
+ hdr.msg_name = src_addr;
+ hdr.msg_namelen = sizeof(struct sockaddr_storage);
+ hdr.msg_iov = &iov;
+ hdr.msg_iovlen = 1;
+
+ return recvmsg(sockfd, &hdr, 0);
+}
+
int cmp_addr(const struct sockaddr_storage *addr1, socklen_t addr1_len,
const struct sockaddr_storage *addr2, socklen_t addr2_len,
bool cmp_port)
diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h
index a4a458c858d59..f88f2470e3fcb 100644
--- a/tools/testing/selftests/bpf/network_helpers.h
+++ b/tools/testing/selftests/bpf/network_helpers.h
@@ -61,6 +61,7 @@ int make_sockaddr(int family, const char *addr_str, __u16 port,
struct sockaddr_storage *addr, socklen_t *len);
char *ping_command(int family);
int get_socket_local_port(int sock_fd);
+int recvmsg_from_client(int sockfd, struct sockaddr_storage *src_addr);
int cmp_addr(const struct sockaddr_storage *addr1, socklen_t addr1_len,
const struct sockaddr_storage *addr2, socklen_t addr2_len,
bool cmp_port);
--
2.44.0.478.gd926399ef9-goog
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