bpf/prog_tests/vrf_socket_lookup.c

6  *     NS0 namespace         |   NS1 namespace
27  *  1) Creates two veth pairs between NS0 and NS1:
50 #define NS1 "vrf_socket_lookup_1"
139 	SYS_NOFAIL("test -f /var/run/netns/" NS1 " && ip netns delete "
140 		   NS1);
149 	SYS(fail, "ip netns add " NS1);
151 	/* NS0 <-> NS1 [veth01 <-> veth10] */
153 	    " netns " NS1);
156 	SYS(fail, "ip -net " NS1 " addr add " IP4_ADDR_VETH10 "/24 dev veth10");
157 	SYS(fail, "ip -net " NS1 " link set dev veth10 up");
159 	/* NS0 <-> NS1 [veth02 <-> veth20] */
161 	    " netns " NS1);
164 	SYS(fail, "ip -net " NS1 " addr add " IP4_ADDR_VETH20 "/24 dev veth20");
165 	SYS(fail, "ip -net " NS1 " link set dev veth20 up");
255 	/* Perform test from NS1 */
257 	nstoken = open_netns(NS1);
258 	if (!ASSERT_OK_PTR(nstoken, "setns " NS1))