From: Vratko Polak <vrpolak@cisco.com>
Date: Wed, 12 Jul 2023 11:24:45 +0000 (+0200)
Subject: l2: fix prefetch
X-Git-Tag: v24.02-rc0~60
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=6d4b3fd19c45de81026c6a3a468bd9a5b59ebb5f;p=vpp.git

l2: fix prefetch

This is a clone of Gerrit 35419.
(It is abandoned and I am not the owner so I cannot reopen.)

Ticket: CSIT-1816
Type: fix
Fixes: 5e0ea09d96010e99a7ce0d2f3370f0de50c46c83

Change-Id: I2265cf38a9ce3155460a1025821c2749afca0add
Signed-off-by: Vratko Polak <vrpolak@cisco.com>
---

diff --git a/src/vnet/l2/l2_input_node.c b/src/vnet/l2/l2_input_node.c
index f8dfa3641b3..07e8c7473ae 100644
--- a/src/vnet/l2/l2_input_node.c
+++ b/src/vnet/l2/l2_input_node.c
@@ -251,11 +251,11 @@ l2input_node_inline (vlib_main_t * vm,
 
 	  /* Prefetch next iteration. */
 	  {
-	    /* Prefetch the buffer header and packet for the N+2 loop iteration */
-	    clib_prefetch_store (b + 4);
-	    clib_prefetch_store (b + 5);
-	    clib_prefetch_store (b + 6);
-	    clib_prefetch_store (b + 7);
+	    /* Prefetch the buffer header for the N+2 loop iteration */
+	    clib_prefetch_store (b[4]);
+	    clib_prefetch_store (b[5]);
+	    clib_prefetch_store (b[6]);
+	    clib_prefetch_store (b[7]);
 
 	    clib_prefetch_store (b[4]->data);
 	    clib_prefetch_store (b[5]->data);