From: Donald Sharp <sharpd@cumulusnetworks.com>
Date: Tue, 25 Sep 2018 22:39:37 +0000 (-0400)
Subject: bgpd: Reduce size of 'struct bgp_node' by 8 bytes
X-Git-Tag: frr-7.1-dev~108^2~11
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=aaafc3216727276a6daf5f2fc5a050b5601e1eb3;p=matthieu%2Ffrr.git

bgpd: Reduce size of 'struct bgp_node' by 8 bytes

The ordering of data within the `struct bgp_node`
was causing extra padding of data.  Moving the version
to a bit different spot allows for more efficient packing
of data.

Pre-change:
(gdb) p sizeof(struct bgp_node)
$1 = 152
(gdb)

Post-change:
(gdb) p sizeof(struct bgp_node)
$1 = 144
(gdb)

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
---

diff --git a/bgpd/bgp_table.h b/bgpd/bgp_table.h
index c267b4fe8a..f306a05da1 100644
--- a/bgpd/bgp_table.h
+++ b/bgpd/bgp_table.h
@@ -60,9 +60,10 @@ struct bgp_node {
 
 	STAILQ_ENTRY(bgp_node) pq;
 
+	uint64_t version;
+
 	mpls_label_t local_label;
 
-	uint64_t version;
 	uint8_t flags;
 #define BGP_NODE_PROCESS_SCHEDULED	(1 << 0)
 #define BGP_NODE_USER_CLEAR             (1 << 1)