| Message ID | 1474285071-28218-4-git-send-email-sassmann@kpanic.de |
|---|---|
| State | Accepted |
| Delegated to: | Jeff Kirsher |
| Headers | show |
> -----Original Message----- > From: Intel-wired-lan [mailto:intel-wired-lan-bounces@lists.osuosl.org] On > Behalf Of Stefan Assmann > Sent: Monday, September 19, 2016 4:38 AM > To: intel-wired-lan@lists.osuosl.org > Cc: netdev@vger.kernel.org; davem@davemloft.net; sassmann@kpanic.de > Subject: [Intel-wired-lan] [PATCH net-next 3/3] i40e: fix sideband flow > director vector allocation > > Currently if the MSI-X vector limit is reached the sideband flow director gets > disabled. A bit too early to make that decision, as vectors may get re- > distributed. So move the check further back. > > Signed-off-by: Stefan Assmann <sassmann@kpanic.de> > --- > drivers/net/ethernet/intel/i40e/i40e_main.c | 11 +++++++++-- > 1 file changed, 9 insertions(+), 2 deletions(-) Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 4727c02..19341fc 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -7645,7 +7645,6 @@ static int i40e_init_msix(struct i40e_pf *pf) vectors_left--; } else { pf->num_fdsb_msix = 0; - pf->flags &= ~I40E_FLAG_FD_SB_ENABLED; } } @@ -7742,7 +7741,6 @@ static int i40e_init_msix(struct i40e_pf *pf) pf->num_fcoe_qps = 0; pf->num_fcoe_msix = 0; #endif - pf->flags &= ~I40E_FLAG_FD_SB_ENABLED; /* partition out the remaining vectors */ switch (vec) { @@ -7774,6 +7772,10 @@ static int i40e_init_msix(struct i40e_pf *pf) pf->num_vmdq_vsis = min_t(int, (vec / 2), I40E_DEFAULT_NUM_VMDQ_VSI); } + if (pf->flags & I40E_FLAG_FD_SB_ENABLED) { + pf->num_fdsb_msix = 1; + vec--; + } pf->num_lan_msix = min_t(int, (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)), pf->num_lan_msix); @@ -7789,6 +7791,11 @@ static int i40e_init_msix(struct i40e_pf *pf) } } + if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) && + (pf->num_fdsb_msix == 0)) { + dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n"); + pf->flags &= ~I40E_FLAG_FD_SB_ENABLED; + } if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) && (pf->num_vmdq_msix == 0)) { dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
Currently if the MSI-X vector limit is reached the sideband flow director gets disabled. A bit too early to make that decision, as vectors may get re-distributed. So move the check further back. Signed-off-by: Stefan Assmann <sassmann@kpanic.de> --- drivers/net/ethernet/intel/i40e/i40e_main.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)