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cxgb4vf: Read correct FL congestion threshold for T5 and T6

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VF driver was reading incorrect freelist congestion notification threshold
for FLM queues when packing is enabled for T5 and T6 adapter. Fixing it
now.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai 2015-07-23 22:41:14 +05:30 committed by David S. Miller
parent e0910bace6
commit ea6f82fe37
2 changed files with 21 additions and 2 deletions
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5
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
View file

@ -338,6 +338,11 @@
#define EGRTHRESHOLDPACKING_G(x) \
(((x) >> EGRTHRESHOLDPACKING_S) & EGRTHRESHOLDPACKING_M)
#define T6_EGRTHRESHOLDPACKING_S 16
#define T6_EGRTHRESHOLDPACKING_M 0xffU
#define T6_EGRTHRESHOLDPACKING_G(x) \
(((x) >> T6_EGRTHRESHOLDPACKING_S) & T6_EGRTHRESHOLDPACKING_M)
#define SGE_TIMESTAMP_LO_A 0x1098
#define SGE_TIMESTAMP_HI_A 0x109c

18
drivers/net/ethernet/chelsio/cxgb4vf/sge.c
View file

@ -2668,8 +2668,22 @@ int t4vf_sge_init(struct adapter *adapter)
* give it more Free List entries. (Note that the SGE's Egress
* Congestion Threshold is in units of 2 Free List pointers.)
*/
s->fl_starve_thres
= EGRTHRESHOLD_G(sge_params->sge_congestion_control)*2 + 1;
switch (CHELSIO_CHIP_VERSION(adapter->params.chip)) {
case CHELSIO_T4:
s->fl_starve_thres =
EGRTHRESHOLD_G(sge_params->sge_congestion_control);
break;
case CHELSIO_T5:
s->fl_starve_thres =
EGRTHRESHOLDPACKING_G(sge_params->sge_congestion_control);
break;
case CHELSIO_T6:
default:
s->fl_starve_thres =
T6_EGRTHRESHOLDPACKING_G(sge_params->sge_congestion_control);
break;
}
s->fl_starve_thres = s->fl_starve_thres * 2 + 1;
/*
* Set up tasklet timers.