aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorAmritha Nambiar <amritha.nambiar@intel.com>2018-02-06 13:15:20 -0800
committerDavid S. Miller <davem@davemloft.net>2018-02-07 21:53:32 -0500
commitbc6d33c8d93f5999920e97a8c6330b8910053d4f (patch)
tree20624c8437d3dd9d0a3fb65f08a48945f6da8b78 /drivers
parent44750f8483a1bc4bda58ec4f7b7af5b053833d49 (diff)
i40e: Fix the number of queues available to be mapped for use
Fix the number of queues per enabled TC and report available queues to the kernel without having to limit them to the max RSS limit so they are available to be mapped for XPS. This allows a queue per processing thread available for handling traffic for the given traffic class. Signed-off-by: Amritha Nambiar <amritha.nambiar@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/intel/i40e/i40e_main.c27
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index f95ce9b5e4fb..e31adbc75f9c 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -1785,7 +1785,7 @@ static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
struct i40e_pf *pf = vsi->back;
u16 sections = 0;
u8 netdev_tc = 0;
- u16 numtc = 0;
+ u16 numtc = 1;
u16 qcount;
u8 offset;
u16 qmap;
@@ -1795,9 +1795,11 @@ static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
offset = 0;
+ /* Number of queues per enabled TC */
+ num_tc_qps = vsi->alloc_queue_pairs;
if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
/* Find numtc from enabled TC bitmap */
- for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
+ for (i = 0, numtc = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (enabled_tc & BIT(i)) /* TC is enabled */
numtc++;
}
@@ -1805,18 +1807,13 @@ static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
numtc = 1;
}
- } else {
- /* At least TC0 is enabled in non-DCB, non-MQPRIO case */
- numtc = 1;
+ num_tc_qps = num_tc_qps / numtc;
+ num_tc_qps = min_t(int, num_tc_qps,
+ i40e_pf_get_max_q_per_tc(pf));
}
vsi->tc_config.numtc = numtc;
vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
- /* Number of queues per enabled TC */
- qcount = vsi->alloc_queue_pairs;
-
- num_tc_qps = qcount / numtc;
- num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
/* Do not allow use more TC queue pairs than MSI-X vectors exist */
if (pf->flags & I40E_FLAG_MSIX_ENABLED)
@@ -1831,9 +1828,13 @@ static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
switch (vsi->type) {
case I40E_VSI_MAIN:
- qcount = min_t(int, pf->alloc_rss_size,
- num_tc_qps);
- break;
+ if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED |
+ I40E_FLAG_FD_ATR_ENABLED)) ||
+ vsi->tc_config.enabled_tc != 1) {
+ qcount = min_t(int, pf->alloc_rss_size,
+ num_tc_qps);
+ break;
+ }
case I40E_VSI_FDIR:
case I40E_VSI_SRIOV:
case I40E_VSI_VMDQ2:

Privacy Policy