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authorNeil Horman <nhorman@tuxdriver.com>2010-03-15 08:02:24 +0000
committerDavid S. Miller <davem@davemloft.net>2010-03-16 21:23:23 -0700
commit1a624832a06b465d0e5651901bcbc3680c78d374 (patch)
treeb8a4eb2917e5e02f410a9563a7fbf268fabc9d44 /net/tipc
parent10708f37ae729baba9b67bd134c3720709d4ae62 (diff)
downloadlinux-2.6.34-ux500-1a624832a06b465d0e5651901bcbc3680c78d374.tar.gz
tipc: Increase frequency of load distribution over broadcast link
Forward port commit 29eb572941501c40ac6e62dbc5043bf9ee76ee56 from git://tipc.cslab.ericsson.net/pub/git/people/allan/tipc.git Origional commit message: Increase frequency of load distribution over broadcast link This patch enhances the behavior of TIPC's broadcast link so that it alternates between redundant bearers (if available) after every message sent, rather than after every 10 messages. This change helps to speed up delivery of retransmitted messages by ensuring that they are not sent repeatedly over a bearer that is no longer working, but not yet recognized as failed. Tested by myself in the latest net-2.6 tree using the tipc sanity test suite Origionally-signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Neil Horman <nhorman@tuxdriver.com> bcast.c | 35 ++++++++++++++--------------------- 1 file changed, 14 insertions(+), 21 deletions(-) Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
-rw-r--r--net/tipc/bcast.c35
1 files changed, 14 insertions, 21 deletions
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index a3bfd406491..90a051912c0 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -558,10 +558,7 @@ static int tipc_bcbearer_send(struct sk_buff *buf,
struct tipc_bearer *unused1,
struct tipc_media_addr *unused2)
{
- static int send_count = 0;
-
int bp_index;
- int swap_time;
/* Prepare buffer for broadcasting (if first time trying to send it) */
@@ -575,11 +572,6 @@ static int tipc_bcbearer_send(struct sk_buff *buf,
msg_set_mc_netid(msg, tipc_net_id);
}
- /* Determine if bearer pairs should be swapped following this attempt */
-
- if ((swap_time = (++send_count >= 10)))
- send_count = 0;
-
/* Send buffer over bearers until all targets reached */
bcbearer->remains = tipc_cltr_bcast_nodes;
@@ -595,21 +587,22 @@ static int tipc_bcbearer_send(struct sk_buff *buf,
if (bcbearer->remains_new.count == bcbearer->remains.count)
continue; /* bearer pair doesn't add anything */
- if (!p->publ.blocked &&
- !p->media->send_msg(buf, &p->publ, &p->media->bcast_addr)) {
- if (swap_time && s && !s->publ.blocked)
- goto swap;
- else
- goto update;
+ if (p->publ.blocked ||
+ p->media->send_msg(buf, &p->publ, &p->media->bcast_addr)) {
+ /* unable to send on primary bearer */
+ if (!s || s->publ.blocked ||
+ s->media->send_msg(buf, &s->publ,
+ &s->media->bcast_addr)) {
+ /* unable to send on either bearer */
+ continue;
+ }
+ }
+
+ if (s) {
+ bcbearer->bpairs[bp_index].primary = s;
+ bcbearer->bpairs[bp_index].secondary = p;
}
- if (!s || s->publ.blocked ||
- s->media->send_msg(buf, &s->publ, &s->media->bcast_addr))
- continue; /* unable to send using bearer pair */
-swap:
- bcbearer->bpairs[bp_index].primary = s;
- bcbearer->bpairs[bp_index].secondary = p;
-update:
if (bcbearer->remains_new.count == 0)
return 0;