TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Octeontx2-pf: Fix Backpresure configuration

Browse Source 
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: a7ef63dbd5 ("octeontx2-af: Disable backpressure between CPT and NIX")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250617063403.3582210-1-hkelam@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Hariprasad Kelam
2025-06-17 12:04:02 +05:30
committed by Jakub Kicinski
parent 28c0d7756f
commit 9ac8d0c640
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+2 -2
View File
@@ -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;
}