selftests/bpf: Add helpers for getting socket family & type name

Having string arrays to map socket family & type to a name prevents us from
unrolling the test runner loop in the subsequent patch. Introduce helpers
that do the same thing.

Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191212102259.418536-5-jakub@cloudflare.com

diff --git a/tools/testing/selftests/bpf/test_select_reuseport.c b/tools/testing/selftests/bpf/test_select_reuseport.c
index a295a08..ef98a7d 100644 (file)
--- a/tools/testing/selftests/bpf/test_select_reuseport.c
+++ b/tools/testing/selftests/bpf/test_select_reuseport.c
@@ -674,12 +674,34 @@ static void cleanup(void)
        bpf_object__close(obj);
 }
 
+static const char *family_str(sa_family_t family)
+{
+       switch (family) {
+       case AF_INET:
+               return "IPv4";
+       case AF_INET6:
+               return "IPv6";
+       default:
+               return "unknown";
+       }
+}
+
+static const char *sotype_str(int sotype)
+{
+       switch (sotype) {
+       case SOCK_STREAM:
+               return "TCP";
+       case SOCK_DGRAM:
+               return "UDP";
+       default:
+               return "unknown";
+       }
+}
+
 static void test_all(void)
 {
        /* Extra SOCK_STREAM to test bind_inany==true */
        const int types[] = { SOCK_STREAM, SOCK_DGRAM, SOCK_STREAM };
-       const char * const type_strings[] = { "TCP", "UDP", "TCP" };
-       const char * const family_strings[] = { "IPv6", "IPv4" };
        const sa_family_t families[] = { AF_INET6, AF_INET };
        const bool bind_inany[] = { false, false, true };
        int t, f, err;
@@ -692,7 +714,7 @@ static void test_all(void)
                        int type = types[t];
 
                        printf("######## %s/%s %s ########\n",
-                              family_strings[f], type_strings[t],
+                              family_str(family), sotype_str(type),
                                inany ? " INANY  " : "LOOPBACK");
 
                        setup_per_test(type, family, inany);