diff options
| author |   Paweł Jabłoński <pawel.jablonski@intel.com> | 2017-12-29 08:49:10 -0500 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-01-26 13:23:50 -0800 |
| commit | 1563f2d2e01242f05dd523ffd56fe104bc1afd58 (patch) | |
| tree | 25f432069c69515781c1d1393a3c82ea5f02e7d0 /drivers/net | |
| parent | i40e/i40evf: Record ITR register location in the q_vector (diff) | |
| download | linux-dev-1563f2d2e01242f05dd523ffd56fe104bc1afd58.tar.xz linux-dev-1563f2d2e01242f05dd523ffd56fe104bc1afd58.zip | |
i40e: Do not allow use more TC queue pairs than MSI-X vectors exist
This patch suppresses the message about invalid TC mapping and wrong
selected TX queue. The root cause of this bug was setting too many
TC queue pairs on huge multiprocessor machines. When quantity of the
TC queue pairs is exceeding MSI-X vectors count then TX queue number
can be selected beyond actual TX queues amount.
Signed-off-by: Paweł Jabłoński <pawel.jablonski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_main.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 827c082c4356..f95ce9b5e4fb 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -1818,6 +1818,10 @@ static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi, 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) + num_tc_qps = min_t(int, num_tc_qps, pf->num_lan_msix); + /* Setup queue offset/count for all TCs for given VSI */ for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { /* See if the given TC is enabled for the given VSI */ |