netdev - [PATCH net-next 11/11] eth: bnxt: pad out the correct indirection table

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Message-ID: <20240702234757.4188344-13-kuba@kernel.org>
Date: Tue,  2 Jul 2024 16:47:57 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	ecree.xilinx@...il.com,
	michael.chan@...adcom.com,
	Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 11/11] eth: bnxt: pad out the correct indirection table

bnxt allocates tables of max size, and changes the used size
based on number of active rings. The unused entries get padded
out with zeros. bnxt_modify_rss() seems to always pad out
the table of the main / default RSS context, instead of
the table of the modified context.

I haven't observed any behavior change due to this patch,
so I don't think it's a fix. Not entirely sure what role
the padding plays, 0 is a valid queue ID.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 13e9b3b26f09..1d587846c394 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -1858,7 +1858,7 @@ static void bnxt_modify_rss(struct bnxt *bp, struct ethtool_rxfh_context *ctx,
 			indir_tbl[i] = rxfh->indir[i];
 		pad = bp->rss_indir_tbl_entries - tbl_size;
 		if (pad)
-			memset(&bp->rss_indir_tbl[i], 0, pad * sizeof(u32));
+			memset(&indir_tbl[i], 0, pad * sizeof(u32));
 	}
 }
 
-- 
2.45.2