diff options
| author | Anjali Singhai Jain <anjali.singhai@intel.com> | 2015-02-24 06:58:50 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-03-03 01:07:29 -0800 |
| commit | 66ddcffb1afb009d352115a61e25c237915d9e04 (patch) | |
| tree | f2da2a3d6a7d6efa52dfc054f6dd55e83260cb18 /drivers | |
| parent | 5db4cb59cdf1c4ce3c0fe8ecbcdb0f4694fe4986 (diff) | |
i40e: Fix RSS size at init since default num queue calculation has changed
With changes to default number of queue pairs that the interface comes up with
from 1 per online CPU to 1 per lan_msix, we need to make sure we recalculate
rss_size. We will now recalculate rss_size based on number of queues enabled in
the VSI.
Without this fix if the max_lan_msix < num_online_cpu we will be coming up
with fewer queues but will be populating rss_size based on num_online_cpus.
This will result in packets getting silently dropped because RSS LUT has queues
that are not enabled.
Change-ID: Ifac8796ce1be1758bb0c34f38dbf4a3a76621e76
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_main.c | 5 |
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index e7ceae8a0276..cfc1d8a52e42 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -472,6 +472,7 @@ struct i40e_vsi { u16 tx_itr_setting; u16 rss_table_size; + u16 rss_size; u16 max_frame; u16 rx_hdr_len; diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index d6d8c3041875..f9da8e805842 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -7207,6 +7207,7 @@ static int i40e_setup_misc_vector(struct i40e_pf *pf) static int i40e_config_rss(struct i40e_pf *pf) { u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1]; + struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi]; struct i40e_hw *hw = &pf->hw; u32 lut = 0; int i, j; @@ -7224,6 +7225,8 @@ static int i40e_config_rss(struct i40e_pf *pf) wr32(hw, I40E_PFQF_HENA(0), (u32)hena); wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32)); + vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs); + /* Check capability and Set table size and register per hw expectation*/ reg_val = rd32(hw, I40E_PFQF_CTL_0); if (hw->func_caps.rss_table_size == 512) { @@ -7245,7 +7248,7 @@ static int i40e_config_rss(struct i40e_pf *pf) * If LAN VSI is the only consumer for RSS then this requirement * is not necessary. */ - if (j == pf->rss_size) + if (j == vsi->rss_size) j = 0; /* lut = 4-byte sliding window of 4 lut entries */ lut = (lut << 8) | (j & |