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| author | Jon Paul Maloy <jon.maloy@ericsson.com> | 2016-06-08 12:00:05 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-06-08 11:27:02 -0700 |
| commit | 5ca509fc0b6bcfeccf03c8c4bb5e4d1a62720c03 (patch) | |
| tree | 13904d6d2fc5ee71548362698378e7206dfcbdab /net/tipc/link.c | |
| parent | c4282ca76c5b81ed73ef4c5eb5c07ee397e51642 (diff) | |
| download | linux-5ca509fc0b6bcfeccf03c8c4bb5e4d1a62720c03.tar.bz2 | |
tipc: change node timer unit from jiffies to ms
The node keepalive interval is recalculated at each timer expiration
to catch any changes in the link tolerance, and stored in a field in
struct tipc_node. We use jiffies as unit for the stored value.
This is suboptimal, because it makes the calculation unnecessary
complex, including two unit conversions. The conversions also lead to
a rounding error that causes the link "abort limit" to be 3 in the
normal case, instead of 4, as intended. This again leads to unnecessary
link resets when the network is pushed close to its limit, e.g., in an
environment with hundreds of nodes or namesapces.
In this commit, we do instead let the keepalive value be calculated and
stored in milliseconds, so that there is only one conversion and the
rounding error is eliminated.
We also remove a redundant "keepalive" field in struct tipc_link. This
is remnant from the previous implementation.
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/link.c')
| -rw-r--r-- | net/tipc/link.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/net/tipc/link.c b/net/tipc/link.c index 7059c94f33c5..a904ccd5a93a 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -87,7 +87,6 @@ struct tipc_stats { * @peer_bearer_id: bearer id used by link's peer endpoint * @bearer_id: local bearer id used by link * @tolerance: minimum link continuity loss needed to reset link [in ms] - * @keepalive_intv: link keepalive timer interval * @abort_limit: # of unacknowledged continuity probes needed to reset link * @state: current state of link FSM * @peer_caps: bitmap describing capabilities of peer node @@ -131,7 +130,6 @@ struct tipc_link { u32 peer_bearer_id; u32 bearer_id; u32 tolerance; - unsigned long keepalive_intv; u32 abort_limit; u32 state; u16 peer_caps; |