tcp: track reorder with sacks

[vpp.git] / src / plugins / unittest / tcp_test.c

diff --git a/src/plugins/unittest/tcp_test.c b/src/plugins/unittest/tcp_test.c
index 535f055..3db0405 100644 (file)
--- a/src/plugins/unittest/tcp_test.c
+++ b/src/plugins/unittest/tcp_test.c
@@ -505,7 +505,9 @@ tcp_test_sack_rx (vlib_main_t * vm, unformat_input_t * input)
            sb->last_sacked_bytes);
   TCP_TEST ((sb->last_bytes_delivered == 0), "last bytes delivered %d",
            sb->last_bytes_delivered);
+  /* Hole should be split in 2 lost holes that add up to 300 */
   TCP_TEST ((sb->lost_bytes == 300), "lost bytes %u", sb->lost_bytes);
+  TCP_TEST ((sb->reorder == 7), "reorder %u", sb->reorder);
 
   /*
    * Ack [100 300] in two steps
@@ -590,7 +592,9 @@ tcp_test_sack_rx (vlib_main_t * vm, unformat_input_t * input)
            sb->last_sacked_bytes);
   TCP_TEST ((sb->last_bytes_delivered == 0), "last bytes delivered %d",
            sb->last_bytes_delivered);
-  TCP_TEST ((sb->lost_bytes == 200), "lost bytes %u", sb->lost_bytes);
+  /* No bytes lost because of reorder */
+  TCP_TEST ((sb->lost_bytes == 0), "lost bytes %u", sb->lost_bytes);
+  TCP_TEST ((sb->reorder == 7), "reorder %u", sb->reorder);
   TCP_TEST ((!sb->is_reneging), "is not reneging");
 
   /*
@@ -637,6 +641,32 @@ tcp_test_sack_rx (vlib_main_t * vm, unformat_input_t * input)
   TCP_TEST ((sb->rxt_sacked == 300), "last rxt sacked bytes %d",
            sb->rxt_sacked);
 
+  /*
+   * Restart
+   */
+  scoreboard_clear (sb);
+  vec_reset_length (tc->rcv_opts.sacks);
+
+  /*
+   * Broken sacks:
+   * block.start > snd_nxt
+   * && block.start < blk.end
+   * && block.end <= snd_nxt
+   */
+  tc->flags = 0;
+  block.start = 2147483647;
+  block.end = 4294967295;
+  vec_add1 (tc->rcv_opts.sacks, block);
+  tc->snd_una = tc->snd_nxt = 1969067947;
+
+  tcp_rcv_sacks (tc, tc->snd_una);
+
+  /*
+   * Clear
+   */
+  scoreboard_clear (sb);
+  vec_reset_length (tc->rcv_opts.sacks);
+
   return 0;
 }