From: Florin Coras <fcoras@cisco.com>
Date: Fri, 4 Dec 2020 02:19:39 +0000 (-0800)
Subject: udp session: fix deq notification for dgrams
X-Git-Tag: v21.06-rc0~63
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F67%2F30267%2F3;p=vpp.git

udp session: fix deq notification for dgrams

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I1440c11fb9d962a05d877aebb4de364c86f9953e
---

diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c
index 12080122c8e..2fde85b03ec 100644
--- a/src/vnet/session/session_node.c
+++ b/src/vnet/session/session_node.c
@@ -1128,7 +1128,10 @@ session_tx_fifo_read_and_snd_i (session_worker_t * wrk,
 
   if (!peek_data)
     {
-      if (svm_fifo_needs_deq_ntf (ctx->s->tx_fifo, ctx->max_len_to_snd))
+      u32 n_dequeued = ctx->max_len_to_snd;
+      if (ctx->transport_vft->transport_options.tx_type == TRANSPORT_TX_DGRAM)
+	n_dequeued += ctx->n_segs_per_evt * SESSION_CONN_HDR_LEN;
+      if (svm_fifo_needs_deq_ntf (ctx->s->tx_fifo, n_dequeued))
 	session_dequeue_notify (ctx->s);
     }
   return SESSION_TX_OK;