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_hw.c | |
| 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_hw.c')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c index dc30d2852850..1e896b923234 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4vf/t4vf_hw.c @@ -493,10 +493,13 @@ int t4vf_get_sge_params(struct adapter *adapter) params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | FW_PARAMS_PARAM_XYZ(SGE_INGRESS_RX_THRESHOLD)); - v = t4vf_query_params(adapter, 1, params, vals); + params[1] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | + FW_PARAMS_PARAM_XYZ(SGE_CONM_CTRL)); + v = t4vf_query_params(adapter, 2, params, vals); if (v) return v; sge_params->sge_ingress_rx_threshold = vals[0]; + sge_params->sge_congestion_control = vals[1]; return 0; } |