From: Hariprasad Kelam Date: Tue, 17 Jun 2025 06:34:02 +0000 (+0530) Subject: Octeontx2-pf: Fix Backpresure configuration X-Git-Tag: v6.16-rc3~27^2~13 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9ac8d0c640a161486eaf71d1999ee990fad62947;p=thirdparty%2Fkernel%2Flinux.git Octeontx2-pf: Fix Backpresure configuration NIX block can receive packets from multiple links such as MAC (RPM), LBK and CPT. ----------------- RPM --| NIX | ----------------- | | LBK Each link supports multiple channels for example RPM link supports 16 channels. In case of link oversubsribe, NIX will assert backpressure on receive channels. The previous patch considered a single channel per link, resulting in backpressure not being enabled on the remaining channels Fixes: a7ef63dbd588 ("octeontx2-af: Disable backpressure between CPT and NIX") Signed-off-by: Hariprasad Kelam Reviewed-by: Simon Horman Link: https://patch.msgid.link/20250617063403.3582210-1-hkelam@marvell.com Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c index 6f572589f1e5c..6b5c9536d26d3 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c @@ -1822,7 +1822,7 @@ int otx2_nix_config_bp(struct otx2_nic *pfvf, bool enable) req->chan_cnt = IEEE_8021QAZ_MAX_TCS; req->bpid_per_chan = 1; } else { - req->chan_cnt = 1; + req->chan_cnt = pfvf->hw.rx_chan_cnt; req->bpid_per_chan = 0; } @@ -1847,7 +1847,7 @@ int otx2_nix_cpt_config_bp(struct otx2_nic *pfvf, bool enable) req->chan_cnt = IEEE_8021QAZ_MAX_TCS; req->bpid_per_chan = 1; } else { - req->chan_cnt = 1; + req->chan_cnt = pfvf->hw.rx_chan_cnt; req->bpid_per_chan = 0; }