[PATCH net-next 2/7] selftests: mptcp: sockopt: use IPPROTO_MPTCP for getaddrinfo

From: Matthieu Baerts (NGI0)
Date: Fri May 02 2025 - 08:30:46 EST


From: Geliang Tang <tanggeliang@xxxxxxxxxx>

getaddrinfo MPTCP is recently supported in glibc and IPPROTO_MPTCP for
getaddrinfo is used in mptcp_connect.c. But in mptcp_sockopt.c and
mptcp_inq.c, IPPROTO_TCP are still used for getaddrinfo, So this patch
updates them.

Signed-off-by: Geliang Tang <tanggeliang@xxxxxxxxxx>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
---
tools/testing/selftests/net/mptcp/mptcp_inq.c | 16 ++++++++++++----
tools/testing/selftests/net/mptcp/mptcp_sockopt.c | 16 ++++++++++++----
2 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_inq.c b/tools/testing/selftests/net/mptcp/mptcp_inq.c
index 218aac46732125c005212d0d561ae3bce8f91a74..3cf1e2a612cef911028f46569563d16dd5d32129 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_inq.c
+++ b/tools/testing/selftests/net/mptcp/mptcp_inq.c
@@ -72,13 +72,21 @@ static const char *getxinfo_strerr(int err)
}

static void xgetaddrinfo(const char *node, const char *service,
- const struct addrinfo *hints,
+ struct addrinfo *hints,
struct addrinfo **res)
{
+again:
int err = getaddrinfo(node, service, hints, res);

if (err) {
- const char *errstr = getxinfo_strerr(err);
+ const char *errstr;
+
+ if (err == EAI_SOCKTYPE) {
+ hints->ai_protocol = IPPROTO_TCP;
+ goto again;
+ }
+
+ errstr = getxinfo_strerr(err);

fprintf(stderr, "Fatal: getaddrinfo(%s:%s): %s\n",
node ? node : "", service ? service : "", errstr);
@@ -91,7 +99,7 @@ static int sock_listen_mptcp(const char * const listenaddr,
{
int sock = -1;
struct addrinfo hints = {
- .ai_protocol = IPPROTO_TCP,
+ .ai_protocol = IPPROTO_MPTCP,
.ai_socktype = SOCK_STREAM,
.ai_flags = AI_PASSIVE | AI_NUMERICHOST
};
@@ -136,7 +144,7 @@ static int sock_connect_mptcp(const char * const remoteaddr,
const char * const port, int proto)
{
struct addrinfo hints = {
- .ai_protocol = IPPROTO_TCP,
+ .ai_protocol = IPPROTO_MPTCP,
.ai_socktype = SOCK_STREAM,
};
struct addrinfo *a, *addr;
diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.c b/tools/testing/selftests/net/mptcp/mptcp_sockopt.c
index 926b0be87c9905e763cfb5ba6df974d3518f0b49..9934a68df23708ecb413c4ab26523989e3b9f158 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.c
+++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.c
@@ -159,13 +159,21 @@ static const char *getxinfo_strerr(int err)
}

static void xgetaddrinfo(const char *node, const char *service,
- const struct addrinfo *hints,
+ struct addrinfo *hints,
struct addrinfo **res)
{
+again:
int err = getaddrinfo(node, service, hints, res);

if (err) {
- const char *errstr = getxinfo_strerr(err);
+ const char *errstr;
+
+ if (err == EAI_SOCKTYPE) {
+ hints->ai_protocol = IPPROTO_TCP;
+ goto again;
+ }
+
+ errstr = getxinfo_strerr(err);

fprintf(stderr, "Fatal: getaddrinfo(%s:%s): %s\n",
node ? node : "", service ? service : "", errstr);
@@ -178,7 +186,7 @@ static int sock_listen_mptcp(const char * const listenaddr,
{
int sock = -1;
struct addrinfo hints = {
- .ai_protocol = IPPROTO_TCP,
+ .ai_protocol = IPPROTO_MPTCP,
.ai_socktype = SOCK_STREAM,
.ai_flags = AI_PASSIVE | AI_NUMERICHOST
};
@@ -223,7 +231,7 @@ static int sock_connect_mptcp(const char * const remoteaddr,
const char * const port, int proto)
{
struct addrinfo hints = {
- .ai_protocol = IPPROTO_TCP,
+ .ai_protocol = IPPROTO_MPTCP,
.ai_socktype = SOCK_STREAM,
};
struct addrinfo *a, *addr;

--
2.48.1