diff options
| author |   Hariprasad Shenai <hariprasad@chelsio.com> | 2015-12-08 10:09:16 +0530 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-12-08 22:43:15 -0500 |
| commit | 70055dd0640666a8ffe7c98e91f0b36fd380fe2a (patch) | |
| tree | 7b18cc20f532210f453c22ed6c1486af99a86e61 /drivers/net/ethernet/chelsio/cxgb4/sge.c | |
| parent | cxgb4: Deal with wrap-around of queue for Work request (diff) | |
| download | linux-dev-70055dd0640666a8ffe7c98e91f0b36fd380fe2a.tar.xz linux-dev-70055dd0640666a8ffe7c98e91f0b36fd380fe2a.zip | |
cxgb4: Add FL DMA mapping error and low counter
Add Free List DMA Mapping Errors to SGE Queue info for
Free Lists. Add Free List "Low" counter to count the number of times we
see the number of pointers that we _think_ the hardware sees in the
Free List below the Egress Threshold.
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/sge.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index c72fe1e86029..8d35ce317f67 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -613,6 +613,7 @@ static unsigned int refill_fl(struct adapter *adap, struct sge_fl *q, int n, PCI_DMA_FROMDEVICE); if (unlikely(dma_mapping_error(adap->pdev_dev, mapping))) { __free_pages(pg, s->fl_pg_order); + q->mapping_err++; goto out; /* do not try small pages for this error */ } mapping |= RX_LARGE_PG_BUF; @@ -642,6 +643,7 @@ alloc_small_pages: PCI_DMA_FROMDEVICE); if (unlikely(dma_mapping_error(adap->pdev_dev, mapping))) { put_page(pg); + q->mapping_err++; goto out; } *d++ = cpu_to_be64(mapping); @@ -663,6 +665,7 @@ out: cred = q->avail - cred; if (unlikely(fl_starving(adap, q))) { smp_wmb(); + q->low++; set_bit(q->cntxt_id - adap->sge.egr_start, adap->sge.starving_fl); } |