Add missing build dependency for benchmarks/sipp

[farrokhi]

Summary

Add missing build dependency for benchmarks/sipp

head/benchmarks/sipp/Makefile

  *       1      the cookie is valid and the latest cookie has been returned
  */
 int
 tcp_fastopen_check_cookie(struct in_conninfo *inc, uint8_t *cookie,
     unsigned int len, uint64_t *latest_cookie)
 {
         struct rm_priotracker tracker;
         unsigned int i, key_index;
+        int rv;
         uint64_t cur_cookie;
 
         if (V_tcp_fastopen_acceptany) {
                 *latest_cookie = 0;
                 return (1);
         }
 
+        TCP_FASTOPEN_KEYS_RLOCK(&tracker);
         if (len != TCP_FASTOPEN_COOKIE_LEN) {
                 if (V_tcp_fastopen_numkeys > 0) {
                         *latest_cookie =
                             tcp_fastopen_make_cookie(
                                 V_tcp_fastopen_keys.key[V_tcp_fastopen_keys.newest],
                                 inc);
-                        return (0);
-                }
-                return (-1);
-        }
+                        rv = 0;
+                } else
+                        rv = -1;
+                goto out;
 
         /*
          * Check against each available key, from newest to oldest.
          */
-        TCP_FASTOPEN_KEYS_RLOCK(&tracker);
         key_index = V_tcp_fastopen_keys.newest;
         for (i = 0; i < V_tcp_fastopen_numkeys; i++) {
                 cur_cookie =
                     tcp_fastopen_make_cookie(V_tcp_fastopen_keys.key[key_index],
                         inc);
                 if (i == 0)
                         *latest_cookie = cur_cookie;
                 if (memcmp(cookie, &cur_cookie, TCP_FASTOPEN_COOKIE_LEN) == 0) {
-                        TCP_FASTOPEN_KEYS_RUNLOCK(&tracker);
-                        return (1);
+                        rv = 1;
+                        goto out;
                 }
                 if (key_index == 0)
                         key_index = TCP_FASTOPEN_MAX_KEYS - 1;
                 else
                         key_index--;
         }
-        TCP_FASTOPEN_KEYS_RUNLOCK(&tracker);
+        rv = 0;
 
-        return (0);
+out:
+        TCP_FASTOPEN_KEYS_RUNLOCK(&tracker);
+        return (rv);
 }
 
 static int
 sysctl_net_inet_tcp_fastopen_autokey(SYSCTL_HANDLER_ARGS)
 {
         int error;
         unsigned int new;