selftests/bpf: test_xsk: Wrap test clean-up in functions

The clean-up done at the end of a test in __testapp_validate_traffic()
isn't wrapped in a function. It isn't convenient if we want to use it
somewhere else in the code.

Wrap the clean-up in two new functions : the first deletes the sockets,
the second releases the umem.

Reviewed-by: Maciej Fijalkowski <[email protected]>
Signed-off-by: Bastien Curutchet (eBPF Foundation) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexei Starovoitov <[email protected]>

Author: bastien-curutchet

tools/testing/selftests/bpf/test_xsk.c

@@ -1679,6 +1679,27 @@ static void xsk_attach_xdp_progs(struct test_spec *test, struct ifobject *ifobj_
 		xsk_reattach_xdp(ifobj_tx, test->xdp_prog_tx, test->xskmap_tx, test->mode);
 }
 
+static void clean_sockets(struct test_spec *test, struct ifobject *ifobj)
+{
+	u32 i;
+
+	if (!ifobj || !test)
+		return;
+
+	for (i = 0; i < test->nb_sockets; i++)
+		xsk_socket__delete(ifobj->xsk_arr[i].xsk);
+}
+
+static void clean_umem(struct test_spec *test, struct ifobject *ifobj1, struct ifobject *ifobj2)
+{
+	if (!ifobj1)
+		return;
+
+	testapp_clean_xsk_umem(ifobj1);
+	if (ifobj2 && !ifobj2->shared_umem)
+		testapp_clean_xsk_umem(ifobj2);
+}
+
 static int __testapp_validate_traffic(struct test_spec *test, struct ifobject *ifobj1,
 				      struct ifobject *ifobj2)
 {
@@ -1734,18 +1755,9 @@ static int __testapp_validate_traffic(struct test_spec *test, struct ifobject *i
 		pthread_join(t0, NULL);
 
 	if (test->total_steps == test->current_step || test->fail) {
-		u32 i;
-
-		if (ifobj2)
-			for (i = 0; i < test->nb_sockets; i++)
-				xsk_socket__delete(ifobj2->xsk_arr[i].xsk);
-
-		for (i = 0; i < test->nb_sockets; i++)
-			xsk_socket__delete(ifobj1->xsk_arr[i].xsk);
-
-		testapp_clean_xsk_umem(ifobj1);
-		if (ifobj2 && !ifobj2->shared_umem)
-			testapp_clean_xsk_umem(ifobj2);
+		clean_sockets(test, ifobj1);
+		clean_sockets(test, ifobj2);
+		clean_umem(test, ifobj1, ifobj2);
 	}
 
 	if (test->fail)