bgpd: remove calls to peer_sort() from fast-path
peer_sort() it's called so much as to be annoying. In the assumption
that the 'sort' of the peer doesn't change during an established session,
I have changed all calls to peer_sort() in the 'fast-path' to only check
the 'sort'. All the calls from the vty and such still recalculate the sort
and store it in the peer.
There's a lot of other calls to peer_sort() that could be changed but some
maube tricky, someone more knowledgeable may try to reduce them.
This hits peer_sort() from 5th out of the stadium^H^H list on a full
internet table loading profiling session.
Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
diff --git a/bgpd/bgpd.c b/bgpd/bgpd.c
index 30fb091..31ce5a1 100644
--- a/bgpd/bgpd.c
+++ b/bgpd/bgpd.c
@@ -201,7 +201,7 @@
/* Clear all IBGP peer. */
for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer))
{
- if (peer_sort (peer) != BGP_PEER_IBGP)
+ if (peer->sort != BGP_PEER_IBGP)
continue;
if (peer->status == Established)
@@ -229,7 +229,7 @@
/* Clear all IBGP peer. */
for (ALL_LIST_ELEMENTS (bgp->peer, node, nnode, peer))
{
- if (peer_sort (peer) != BGP_PEER_IBGP)
+ if (peer->sort != BGP_PEER_IBGP)
continue;
if (peer->status == Established)
@@ -645,9 +645,9 @@
peer->v_connect = BGP_DEFAULT_CONNECT_RETRY;
}
-/* Check peer's AS number and determin is this peer IBGP or EBGP */
-int
-peer_sort (struct peer *peer)
+/* Check peer's AS number and determines if this peer is IBGP or EBGP */
+static bgp_peer_sort_t
+peer_calc_sort (struct peer *peer)
{
struct bgp *bgp;
@@ -696,6 +696,14 @@
}
}
+/* Calculate and cache the peer "sort" */
+bgp_peer_sort_t
+peer_sort (struct peer *peer)
+{
+ peer->sort = peer_calc_sort (peer);
+ return peer->sort;
+}
+
static void
peer_free (struct peer *peer)
{
@@ -866,7 +874,7 @@
peer->readtime = peer->resettime = bgp_clock ();
/* Default TTL set. */
- peer->ttl = (peer_sort (peer) == BGP_PEER_IBGP ? 255 : 1);
+ peer->ttl = (peer->sort == BGP_PEER_IBGP) ? 255 : 1;
/* Make peer's address string. */
sockunion2str (su, buf, SU_ADDRSTRLEN);
@@ -897,7 +905,7 @@
static void
peer_as_change (struct peer *peer, as_t as)
{
- int type;
+ bgp_peer_sort_t type;
/* Stop peer. */
if (! CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP))
@@ -2666,7 +2674,7 @@
struct listnode *node, *nnode;
struct peer *peer1;
- if (peer_sort (peer) == BGP_PEER_IBGP)
+ if (peer->sort == BGP_PEER_IBGP)
return 0;
/* see comment in peer_ttl_security_hops_set() */
@@ -2680,7 +2688,7 @@
for (ALL_LIST_ELEMENTS (group->peer, node, nnode, peer1))
{
- if (peer_sort (peer1) == BGP_PEER_IBGP)
+ if (peer1->sort == BGP_PEER_IBGP)
continue;
if (peer1->gtsm_hops != 0)
@@ -2698,7 +2706,7 @@
if (! CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP))
{
- if (peer->fd >= 0 && peer_sort (peer) != BGP_PEER_IBGP)
+ if (peer->fd >= 0 && peer->sort != BGP_PEER_IBGP)
sockopt_ttl (peer->su.sa.sa_family, peer->fd, peer->ttl);
}
else
@@ -2706,7 +2714,7 @@
group = peer->group;
for (ALL_LIST_ELEMENTS (group->peer, node, nnode, peer))
{
- if (peer_sort (peer) == BGP_PEER_IBGP)
+ if (peer->sort == BGP_PEER_IBGP)
continue;
peer->ttl = group->conf->ttl;
@@ -2724,7 +2732,7 @@
struct peer_group *group;
struct listnode *node, *nnode;
- if (peer_sort (peer) == BGP_PEER_IBGP)
+ if (peer->sort == BGP_PEER_IBGP)
return 0;
if (peer->gtsm_hops != 0 && peer->ttl != MAXTTL)
@@ -2737,7 +2745,7 @@
if (! CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP))
{
- if (peer->fd >= 0 && peer_sort (peer) != BGP_PEER_IBGP)
+ if (peer->fd >= 0 && peer->sort != BGP_PEER_IBGP)
sockopt_ttl (peer->su.sa.sa_family, peer->fd, peer->ttl);
}
else
@@ -2745,7 +2753,7 @@
group = peer->group;
for (ALL_LIST_ELEMENTS (group->peer, node, nnode, peer))
{
- if (peer_sort (peer) == BGP_PEER_IBGP)
+ if (peer->sort == BGP_PEER_IBGP)
continue;
peer->ttl = 1;
@@ -3297,7 +3305,7 @@
UNSET_FLAG (peer->config, PEER_CONFIG_ROUTEADV);
peer->routeadv = 0;
- if (peer_sort (peer) == BGP_PEER_IBGP)
+ if (peer->sort == BGP_PEER_IBGP)
peer->v_routeadv = BGP_DEFAULT_IBGP_ROUTEADV;
else
peer->v_routeadv = BGP_DEFAULT_EBGP_ROUTEADV;
@@ -4372,7 +4380,7 @@
zlog_debug ("peer_ttl_security_hops_set: set gtsm_hops to %d for %s", gtsm_hops, peer->host);
- if (peer_sort (peer) == BGP_PEER_IBGP)
+ if (peer->sort == BGP_PEER_IBGP)
return BGP_ERR_NO_IBGP_WITH_TTLHACK;
/* We cannot configure ttl-security hops when ebgp-multihop is already
@@ -4392,7 +4400,7 @@
for (ALL_LIST_ELEMENTS (group->peer, node, nnode, peer1))
{
- if (peer_sort (peer1) == BGP_PEER_IBGP)
+ if (peer1->sort == BGP_PEER_IBGP)
continue;
if (peer1->ttl != 1)
@@ -4414,7 +4422,7 @@
if (! CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP))
{
- if (peer->fd >= 0 && peer_sort (peer) != BGP_PEER_IBGP)
+ if (peer->fd >= 0 && peer->sort != BGP_PEER_IBGP)
sockopt_minttl (peer->su.sa.sa_family, peer->fd, MAXTTL + 1 - gtsm_hops);
}
else
@@ -4422,7 +4430,7 @@
group = peer->group;
for (ALL_LIST_ELEMENTS (group->peer, node, nnode, peer))
{
- if (peer_sort (peer) == BGP_PEER_IBGP)
+ if (peer->sort == BGP_PEER_IBGP)
continue;
peer->gtsm_hops = group->conf->gtsm_hops;
@@ -4459,7 +4467,7 @@
zlog_debug ("peer_ttl_security_hops_unset: set gtsm_hops to zero for %s", peer->host);
- if (peer_sort (peer) == BGP_PEER_IBGP)
+ if (peer->sort == BGP_PEER_IBGP)
return 0;
/* if a peer-group member, then reset to peer-group default rather than 0 */
@@ -4471,7 +4479,7 @@
opeer = peer;
if (! CHECK_FLAG (peer->sflags, PEER_STATUS_GROUP))
{
- if (peer->fd >= 0 && peer_sort (peer) != BGP_PEER_IBGP)
+ if (peer->fd >= 0 && peer->sort != BGP_PEER_IBGP)
sockopt_minttl (peer->su.sa.sa_family, peer->fd, 0);
}
else
@@ -4479,7 +4487,7 @@
group = peer->group;
for (ALL_LIST_ELEMENTS (group->peer, node, nnode, peer))
{
- if (peer_sort (peer) == BGP_PEER_IBGP)
+ if (peer->sort == BGP_PEER_IBGP)
continue;
peer->gtsm_hops = 0;
@@ -4794,7 +4802,7 @@
vty_out (vty, " neighbor %s passive%s", addr, VTY_NEWLINE);
/* EBGP multihop. */
- if (peer_sort (peer) != BGP_PEER_IBGP && peer->ttl != 1 &&
+ if (peer->sort != BGP_PEER_IBGP && peer->ttl != 1 &&
!(peer->gtsm_hops != 0 && peer->ttl == MAXTTL))
if (! peer_group_active (peer) ||
g_peer->ttl != peer->ttl)
@@ -4802,7 +4810,7 @@
VTY_NEWLINE);
/* ttl-security hops */
- if (peer_sort (peer) != BGP_PEER_IBGP && peer->gtsm_hops != 0)
+ if (peer->sort != BGP_PEER_IBGP && peer->gtsm_hops != 0)
if (! peer_group_active (peer) || g_peer->gtsm_hops != peer->gtsm_hops)
vty_out (vty, " neighbor %s ttl-security hops %d%s", addr,
peer->gtsm_hops, VTY_NEWLINE);