diff options
| author | Faisal Latif <faisal.latif@intel.com> | 2009-04-27 13:39:36 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2009-04-27 13:39:36 -0700 |
| commit | 4e9c390036196f89208cf9574dfd19daae146776 (patch) | |
| tree | c6f80bd2fdebbbfe87ba6f1addf84ed0e6d1af58 | |
| parent | c11470f9f4d4490cd7e9563f604c4c7868caf6de (diff) | |
| download | lwn-4e9c390036196f89208cf9574dfd19daae146776.tar.gz lwn-4e9c390036196f89208cf9574dfd19daae146776.zip | |
RDMA/nes: Increase rexmit timeout interval
Under heavy load with large cluster testing, it may take longer to
receive a response to MPA requests. Change the driver to wait longer
after each rexmit to max time value.
Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_cm.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_cm.h | 1 |
2 files changed, 6 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c index 1f7a659e6e9a..4969c386785e 100644 --- a/drivers/infiniband/hw/nes/nes_cm.c +++ b/drivers/infiniband/hw/nes/nes_cm.c @@ -541,6 +541,7 @@ static void nes_cm_timer_tick(unsigned long pass) struct list_head *list_node; struct nes_cm_core *cm_core = g_cm_core; u32 settimer = 0; + unsigned long timetosend; int ret = NETDEV_TX_OK; struct list_head timer_list; @@ -645,8 +646,11 @@ static void nes_cm_timer_tick(unsigned long pass) send_entry->retrycount); if (send_entry->send_retrans) { send_entry->retranscount--; + timetosend = (NES_RETRY_TIMEOUT << + (NES_DEFAULT_RETRANS - send_entry->retranscount)); + send_entry->timetosend = jiffies + - NES_RETRY_TIMEOUT; + min(timetosend, NES_MAX_TIMEOUT); if (nexttimeout > send_entry->timetosend || !settimer) { nexttimeout = send_entry->timetosend; diff --git a/drivers/infiniband/hw/nes/nes_cm.h b/drivers/infiniband/hw/nes/nes_cm.h index 80bba1892571..8b7e7c0e496e 100644 --- a/drivers/infiniband/hw/nes/nes_cm.h +++ b/drivers/infiniband/hw/nes/nes_cm.h @@ -149,6 +149,7 @@ struct nes_timer_entry { #endif #define NES_SHORT_TIME (10) #define NES_LONG_TIME (2000*HZ/1000) +#define NES_MAX_TIMEOUT ((unsigned long) (12*HZ)) #define NES_CM_HASHTABLE_SIZE 1024 #define NES_CM_TCP_TIMER_INTERVAL 3000 |