From: Geetha sowjanya gakula@marvell.com
[ Upstream commit 8fcd7c7b3a38ab5e452f542fda8f7940e77e479a ]
Current driver enables backpressure for LBK interfaces. But these interfaces do not support this feature. Hence, this patch fixes the issue by skipping the backpressure configuration for these interfaces.
Fixes: 75f36270990c ("octeontx2-pf: Support to enable/disable pause frames via ethtool"). Signed-off-by: Geetha sowjanya gakula@marvell.com Signed-off-by: Sunil Goutham sgoutham@marvell.com Link: https://lore.kernel.org/r/20230716093741.28063-1-gakula@marvell.com Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c index 54aeb276b9a0a..000dd89c4baff 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c @@ -1311,8 +1311,9 @@ static int otx2_init_hw_resources(struct otx2_nic *pf) if (err) goto err_free_npa_lf;
- /* Enable backpressure */ - otx2_nix_config_bp(pf, true); + /* Enable backpressure for CGX mapped PF/VFs */ + if (!is_otx2_lbkvf(pf->pdev)) + otx2_nix_config_bp(pf, true);
/* Init Auras and pools used by NIX RQ, for free buffer ptrs */ err = otx2_rq_aura_pool_init(pf);