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-rw-r--r--tools/testing/selftests/net/udpgso.c134
-rwxr-xr-xtools/testing/selftests/net/udpgso.sh49
2 files changed, 47 insertions, 136 deletions
diff --git a/tools/testing/selftests/net/udpgso.c b/tools/testing/selftests/net/udpgso.c
index 7badaf215de2..1d975bf52af3 100644
--- a/tools/testing/selftests/net/udpgso.c
+++ b/tools/testing/selftests/net/udpgso.c
@@ -56,7 +56,6 @@ static bool cfg_do_msgmore;
static bool cfg_do_setsockopt;
static int cfg_specific_test_id = -1;
-static const char cfg_ifname[] = "lo";
static unsigned short cfg_port = 9000;
static char buf[ETH_MAX_MTU];
@@ -69,8 +68,13 @@ struct testcase {
int r_len_last; /* recv(): size of last non-mss dgram, if any */
};
-const struct in6_addr addr6 = IN6ADDR_LOOPBACK_INIT;
-const struct in_addr addr4 = { .s_addr = __constant_htonl(INADDR_LOOPBACK + 2) };
+const struct in6_addr addr6 = {
+ { { 0xfd, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 } }, /* fd00::1 */
+};
+
+const struct in_addr addr4 = {
+ __constant_htonl(0x0a000001), /* 10.0.0.1 */
+};
struct testcase testcases_v4[] = {
{
@@ -274,48 +278,6 @@ struct testcase testcases_v6[] = {
}
};
-static unsigned int get_device_mtu(int fd, const char *ifname)
-{
- struct ifreq ifr;
-
- memset(&ifr, 0, sizeof(ifr));
-
- strcpy(ifr.ifr_name, ifname);
-
- if (ioctl(fd, SIOCGIFMTU, &ifr))
- error(1, errno, "ioctl get mtu");
-
- return ifr.ifr_mtu;
-}
-
-static void __set_device_mtu(int fd, const char *ifname, unsigned int mtu)
-{
- struct ifreq ifr;
-
- memset(&ifr, 0, sizeof(ifr));
-
- ifr.ifr_mtu = mtu;
- strcpy(ifr.ifr_name, ifname);
-
- if (ioctl(fd, SIOCSIFMTU, &ifr))
- error(1, errno, "ioctl set mtu");
-}
-
-static void set_device_mtu(int fd, int mtu)
-{
- int val;
-
- val = get_device_mtu(fd, cfg_ifname);
- fprintf(stderr, "device mtu (orig): %u\n", val);
-
- __set_device_mtu(fd, cfg_ifname, mtu);
- val = get_device_mtu(fd, cfg_ifname);
- if (val != mtu)
- error(1, 0, "unable to set device mtu to %u\n", val);
-
- fprintf(stderr, "device mtu (test): %u\n", val);
-}
-
static void set_pmtu_discover(int fd, bool is_ipv4)
{
int level, name, val;
@@ -354,81 +316,6 @@ static unsigned int get_path_mtu(int fd, bool is_ipv4)
return mtu;
}
-/* very wordy version of system("ip route add dev lo mtu 1500 127.0.0.3/32") */
-static void set_route_mtu(int mtu, bool is_ipv4)
-{
- struct sockaddr_nl nladdr = { .nl_family = AF_NETLINK };
- struct nlmsghdr *nh;
- struct rtattr *rta;
- struct rtmsg *rt;
- char data[NLMSG_ALIGN(sizeof(*nh)) +
- NLMSG_ALIGN(sizeof(*rt)) +
- NLMSG_ALIGN(RTA_LENGTH(sizeof(addr6))) +
- NLMSG_ALIGN(RTA_LENGTH(sizeof(int))) +
- NLMSG_ALIGN(RTA_LENGTH(0) + RTA_LENGTH(sizeof(int)))];
- int fd, ret, alen, off = 0;
-
- alen = is_ipv4 ? sizeof(addr4) : sizeof(addr6);
-
- fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
- if (fd == -1)
- error(1, errno, "socket netlink");
-
- memset(data, 0, sizeof(data));
-
- nh = (void *)data;
- nh->nlmsg_type = RTM_NEWROUTE;
- nh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
- off += NLMSG_ALIGN(sizeof(*nh));
-
- rt = (void *)(data + off);
- rt->rtm_family = is_ipv4 ? AF_INET : AF_INET6;
- rt->rtm_table = RT_TABLE_MAIN;
- rt->rtm_dst_len = alen << 3;
- rt->rtm_protocol = RTPROT_BOOT;
- rt->rtm_scope = RT_SCOPE_UNIVERSE;
- rt->rtm_type = RTN_UNICAST;
- off += NLMSG_ALIGN(sizeof(*rt));
-
- rta = (void *)(data + off);
- rta->rta_type = RTA_DST;
- rta->rta_len = RTA_LENGTH(alen);
- if (is_ipv4)
- memcpy(RTA_DATA(rta), &addr4, alen);
- else
- memcpy(RTA_DATA(rta), &addr6, alen);
- off += NLMSG_ALIGN(rta->rta_len);
-
- rta = (void *)(data + off);
- rta->rta_type = RTA_OIF;
- rta->rta_len = RTA_LENGTH(sizeof(int));
- *((int *)(RTA_DATA(rta))) = 1; //if_nametoindex("lo");
- off += NLMSG_ALIGN(rta->rta_len);
-
- /* MTU is a subtype in a metrics type */
- rta = (void *)(data + off);
- rta->rta_type = RTA_METRICS;
- rta->rta_len = RTA_LENGTH(0) + RTA_LENGTH(sizeof(int));
- off += NLMSG_ALIGN(rta->rta_len);
-
- /* now fill MTU subtype. Note that it fits within above rta_len */
- rta = (void *)(((char *) rta) + RTA_LENGTH(0));
- rta->rta_type = RTAX_MTU;
- rta->rta_len = RTA_LENGTH(sizeof(int));
- *((int *)(RTA_DATA(rta))) = mtu;
-
- nh->nlmsg_len = off;
-
- ret = sendto(fd, data, off, 0, (void *)&nladdr, sizeof(nladdr));
- if (ret != off)
- error(1, errno, "send netlink: %uB != %uB\n", ret, off);
-
- if (close(fd))
- error(1, errno, "close netlink");
-
- fprintf(stderr, "route mtu (test): %u\n", mtu);
-}
-
static bool __send_one(int fd, struct msghdr *msg, int flags)
{
int ret;
@@ -591,15 +478,10 @@ static void run_test(struct sockaddr *addr, socklen_t alen)
/* Do not fragment these datagrams: only succeed if GSO works */
set_pmtu_discover(fdt, addr->sa_family == AF_INET);
- if (cfg_do_connectionless) {
- set_device_mtu(fdt, CONST_MTU_TEST);
+ if (cfg_do_connectionless)
run_all(fdt, fdr, addr, alen);
- }
if (cfg_do_connected) {
- set_device_mtu(fdt, CONST_MTU_TEST + 100);
- set_route_mtu(CONST_MTU_TEST, addr->sa_family == AF_INET);
-
if (connect(fdt, addr, alen))
error(1, errno, "connect");
diff --git a/tools/testing/selftests/net/udpgso.sh b/tools/testing/selftests/net/udpgso.sh
index fec24f584fe9..6c63178086b0 100755
--- a/tools/testing/selftests/net/udpgso.sh
+++ b/tools/testing/selftests/net/udpgso.sh
@@ -3,27 +3,56 @@
#
# Run a series of udpgso regression tests
+set -o errexit
+set -o nounset
+
+setup_loopback() {
+ ip addr add dev lo 10.0.0.1/32
+ ip addr add dev lo fd00::1/128 nodad noprefixroute
+}
+
+test_dev_mtu() {
+ setup_loopback
+ # Reduce loopback MTU
+ ip link set dev lo mtu 1500
+}
+
+test_route_mtu() {
+ setup_loopback
+ # Remove default local routes
+ ip route del local 10.0.0.1/32 table local dev lo
+ ip route del local fd00::1/128 table local dev lo
+ # Install local routes with reduced MTU
+ ip route add local 10.0.0.1/32 table local dev lo mtu 1500
+ ip route add local fd00::1/128 table local dev lo mtu 1500
+}
+
+if [ "$#" -gt 0 ]; then
+ "$1"
+ shift 2 # pop "test_*" arg and "--" delimiter
+ exec "$@"
+fi
+
echo "ipv4 cmsg"
-./in_netns.sh ./udpgso -4 -C
+./in_netns.sh "$0" test_dev_mtu -- ./udpgso -4 -C
echo "ipv4 setsockopt"
-./in_netns.sh ./udpgso -4 -C -s
+./in_netns.sh "$0" test_dev_mtu -- ./udpgso -4 -C -s
echo "ipv6 cmsg"
-./in_netns.sh ./udpgso -6 -C
+./in_netns.sh "$0" test_dev_mtu -- ./udpgso -6 -C
echo "ipv6 setsockopt"
-./in_netns.sh ./udpgso -6 -C -s
+./in_netns.sh "$0" test_dev_mtu -- ./udpgso -6 -C -s
echo "ipv4 connected"
-./in_netns.sh ./udpgso -4 -c
+./in_netns.sh "$0" test_route_mtu -- ./udpgso -4 -c
-# blocked on 2nd loopback address
-# echo "ipv6 connected"
-# ./in_netns.sh ./udpgso -6 -c
+echo "ipv6 connected"
+./in_netns.sh "$0" test_route_mtu -- ./udpgso -6 -c
echo "ipv4 msg_more"
-./in_netns.sh ./udpgso -4 -C -m
+./in_netns.sh "$0" test_dev_mtu -- ./udpgso -4 -C -m
echo "ipv6 msg_more"
-./in_netns.sh ./udpgso -6 -C -m
+./in_netns.sh "$0" test_dev_mtu -- ./udpgso -6 -C -m
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-21 18:50:49 +0000