linux-kernel - [PATCH net v3 0/2] net: ethernet: ti: am65-cpsw: Fixes to multi queue RX feature

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Message-Id: <20241101-am65-cpsw-multi-rx-j7-fix-v3-0-338fdd6a55da@kernel.org>
Date: Fri, 01 Nov 2024 12:18:49 +0200
From: Roger Quadros <rogerq@...nel.org>
To: Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
 Jesper Dangaard Brouer <hawk@...nel.org>, 
 John Fastabend <john.fastabend@...il.com>, Simon Horman <horms@...nel.org>, 
 Vignesh Raghavendra <vigneshr@...com>
Cc: Maxime Chevallier <maxime.chevallier@...tlin.com>, 
 Siddharth Vadapalli <s-vadapalli@...com>, 
 Md Danish Anwar <danishanwar@...com>, 
 Govindarajan Sriramakrishnan <srk@...com>, netdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, bpf@...r.kernel.org, 
 Roger Quadros <rogerq@...nel.org>
Subject: [PATCH net v3 0/2] net: ethernet: ti: am65-cpsw: Fixes to multi
 queue RX feature

On J7 platforms, setting up multiple RX flows was failing
as the RX free descriptor ring 0 is shared among all flows
and we did not allocate enough elements in the RX free descriptor
ring 0 to accommodate for all RX flows. Patch 1 fixes this.

The second patch fixes a warning if there was any error in
am65_cpsw_nuss_init_rx_chns() and am65_cpsw_nuss_cleanup_rx_chns()
was called after that.

Signed-off-by: Roger Quadros <rogerq@...nel.org>
---
Changes in v3:
- Reverse Xmas tree style fixes
- Split out unrelated code fix to a new patch

Changes in v2:
- Dropped unused variables desc-idx and flow
- Link to v1: https://lore.kernel.org/r/20241029-am65-cpsw-multi-rx-j7-fix-v1-1-426ca805918c@kernel.org

---
Roger Quadros (2):
      net: ethernet: ti: am65-cpsw: Fix multi queue Rx on J7
      net: ethernet: ti: am65-cpsw: fix warning in am65_cpsw_nuss_remove_rx_chns()

 drivers/net/ethernet/ti/am65-cpsw-nuss.c | 75 ++++++++++++++------------------
 drivers/net/ethernet/ti/am65-cpsw-nuss.h |  6 ++-
 2 files changed, 37 insertions(+), 44 deletions(-)
---
base-commit: 42f7652d3eb527d03665b09edac47f85fb600924
change-id: 20241023-am65-cpsw-multi-rx-j7-fix-f9a2149be6dd

Best regards,
-- 
Roger Quadros <rogerq@...nel.org>