bgpd: Convert from struct bgp_node to struct bgp_dest

This is based on @donaldsharp's work

The current code base is the struct bgp_node data structure.
The problem with this is that it creates a bunch of
extra data per route_node.
The table structure generates ‘holder’ nodes
that are never going to receive bgp routes,
and now the memory of those nodes is allocated
as if they are a full bgp_node.

After splitting up the bgp_node into bgp_dest and route_node,
the memory of ‘holder’ node which does not have any bgp data
will be allocated as the route_node, not the bgp_node,
and the memory usage is reduced.
The memory usage of BGP node will be reduced from 200B to 96B.
The total memory usage optimization of this part is ~16.00%.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Signed-off-by: Yuqing Zhao <xiaopanghu99@163.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/bgpd/bgp_bmp.c b/bgpd/bgp_bmp.c
index 04a70aa59f..9821dcf7bb 100644
--- a/bgpd/bgp_bmp.c
+++ b/bgpd/bgp_bmp.c
@@ -1307,7 +1307,7 @@ static int bmp_process(struct bgp *bgp, afi_t afi, safi_t safi,
 	if (frrtrace_enabled(frr_bgp, bmp_process)) {
 		char pfxprint[PREFIX2STR_BUFFER];
 
-		prefix2str(&bn->p, pfxprint, sizeof(pfxprint));
+		prefix2str(&bn->rn->p, pfxprint, sizeof(pfxprint));
 		frrtrace(5, frr_bgp, bmp_process, peer, pfxprint, afi, safi,
 			 withdraw);
 	}