diff options
| author |   Hariprasad Shenai <hariprasad@chelsio.com> | 2014-11-07 17:06:31 +0530 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-11-10 14:15:03 -0500 |
| commit | 50d21a662d6d3155132edf34f72161a59675c02c (patch) | |
| tree | 956e58dcfd859b2aa5f3a9e6f152b44ba5f7e2f8 /drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h | |
| parent | cxgb4/cxgb4vf: For T5 use Packing and Padding Boundaries for SGE DMA transfers (diff) | |
| download | linux-dev-50d21a662d6d3155132edf34f72161a59675c02c.tar.xz linux-dev-50d21a662d6d3155132edf34f72161a59675c02c.zip | |
cxgb4vf: FL Starvation Threshold needs to be larger than the SGE's Egress Congestion Threshold
Free List Starvation Threshold needs to be larger than the SGE's Egress
Congestion Threshold or we'll end up in a mutual stall where the driver waits
for Ingress Packets to drive replacing Free List Pointers and the SGE waits for
Free List Pointers before pushing Ingress Packets to the host.
Based on original work by Casey Leedom <leedom@chelsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h index b5c301d9565e..4b6a6d14d86d 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h +++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h @@ -140,6 +140,7 @@ struct sge_params { u32 sge_user_mode_limits; /* limits for BAR2 user mode accesses */ u32 sge_fl_buffer_size[16]; /* free list buffer sizes */ u32 sge_ingress_rx_threshold; /* RX counter interrupt threshold[4] */ + u32 sge_congestion_control; /* congestion thresholds, etc. */ u32 sge_timer_value_0_and_1; /* interrupt coalescing timer values */ u32 sge_timer_value_2_and_3; u32 sge_timer_value_4_and_5; |