[PATCH 22.11] common/cnxk: fix CPT backpressure disable on LBK

Rahul Bhansali rbhansali at marvell.com
Mon Jul 3 15:28:21 CEST 2023


[ upstream commit 772e30281a1d686096b27e5926e2f369caa05cff ]

For LBK interfaces, roc_nix_inl_inb_is_enabled() is false, hence
backpressure on CPT is disabled and causing CQ full interrupt.

NIXX_AF_RX_CHAN[0x800]_CFG is global config for all PF, VF
of RPM/LBK, hence backpressure disable on CPT is not required.

Fixes: 0663a84524e5 ("common/cnxk: enable backpressure on CPT with inline inbound")

Signed-off-by: Rahul Bhansali <rbhansali at marvell.com>
---
 drivers/common/cnxk/roc_nix_fc.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/drivers/common/cnxk/roc_nix_fc.c b/drivers/common/cnxk/roc_nix_fc.c
index 033e17a4bf..5e8a01c775 100644
--- a/drivers/common/cnxk/roc_nix_fc.c
+++ b/drivers/common/cnxk/roc_nix_fc.c
@@ -88,17 +88,6 @@ nix_fc_rxchan_bpid_set(struct roc_nix *roc_nix, bool enable)
 		req->chan_cnt = 1;
 		req->bpid_per_chan = 0;
 
-		rc = mbox_process_msg(mbox, (void *)&rsp);
-		if (rc)
-			goto exit;
-	} else {
-		req = mbox_alloc_msg_nix_cpt_bp_disable(mbox);
-		if (req == NULL)
-			return rc;
-		req->chan_base = 0;
-		req->chan_cnt = 1;
-		req->bpid_per_chan = 0;
-
 		rc = mbox_process_msg(mbox, (void *)&rsp);
 		if (rc)
 			goto exit;
-- 
2.25.1



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