tcp: mark lost first sack hole on timeout

[vpp.git] / src / vnet / tcp / tcp_sack.c

diff --git a/src/vnet/tcp/tcp_sack.c b/src/vnet/tcp/tcp_sack.c
index 8f51b51..63af07b 100644 (file)
--- a/src/vnet/tcp/tcp_sack.c
+++ b/src/vnet/tcp/tcp_sack.c
@@ -264,6 +264,27 @@ scoreboard_init_rxt (sack_scoreboard_t * sb, u32 snd_una)
   sb->rescue_rxt = snd_una - 1;
 }
 
+void
+scoreboard_rxt_mark_lost (sack_scoreboard_t *sb, u32 snd_una, u32 snd_nxt)
+{
+  sack_scoreboard_hole_t *hole;
+
+  hole = scoreboard_first_hole (sb);
+  if (!hole)
+    {
+      hole = scoreboard_insert_hole (sb, TCP_INVALID_SACK_HOLE_INDEX, snd_una,
+                                    snd_nxt);
+      sb->tail = scoreboard_hole_index (sb, hole);
+      sb->high_sacked = snd_una;
+    }
+
+  if (hole->is_lost)
+    return;
+
+  hole->is_lost = 1;
+  sb->lost_bytes += scoreboard_hole_bytes (hole);
+}
+
 void
 scoreboard_init (sack_scoreboard_t * sb)
 {