Messages in this thread Patch in this message | | | From | Suman Ghosh <> | Subject | [net PATCH V2 1/4] octeontx2-pf: Update PFC configuration | Date | Wed, 9 Aug 2023 12:35:29 +0530 |
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As of now we are creating/deleting Tx schedulers when user is setting PFC on/off. The problem is if we have a running traffic on the interface and as we are updating the sq->smq mapping on the fly, we might loose completion interrupt for some packets. As a result of that a watchdog reset is hit from BQL. This patch solves the issue by simply calling interface off/on APIs which will reconfigure all the queues. We might loss the running traffic momentarily but that should be fine.
Fixes: 99c969a83d82 ("octeontx2-pf: Add egress PFC support") Signed-off-by: Suman Ghosh <sumang@marvell.com> --- .../net/ethernet/marvell/octeontx2/nic/otx2_dcbnl.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_dcbnl.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_dcbnl.c index ccaf97bb1ce0..d54edfa8fcc9 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_dcbnl.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_dcbnl.c @@ -406,6 +406,7 @@ static int otx2_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc) static int otx2_dcbnl_ieee_setpfc(struct net_device *dev, struct ieee_pfc *pfc) { struct otx2_nic *pfvf = netdev_priv(dev); + bool if_up = netif_running(dev); int err; /* Save PFC configuration to interface */ @@ -426,14 +427,9 @@ static int otx2_dcbnl_ieee_setpfc(struct net_device *dev, struct ieee_pfc *pfc) if (err) return err; - /* Request Per channel Bpids */ - if (pfc->pfc_en) - otx2_nix_config_bp(pfvf, true); - - err = otx2_pfc_txschq_update(pfvf); - if (err) { - dev_err(pfvf->dev, "%s failed to update TX schedulers\n", __func__); - return err; + if (if_up) { + otx2_stop(dev); + otx2_open(dev); } return 0; -- 2.25.1
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