linux-kernel - [PATCH net v4 0/2] Fixes on the OPEN Alliance TC6 10BASE-T1x MAC-PHY support generic lib

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Message-ID: <20241213123159.439739-1-parthiban.veerasooran@microchip.com>
Date: Fri, 13 Dec 2024 18:01:57 +0530
From: Parthiban Veerasooran <parthiban.veerasooran@...rochip.com>
To: <andrew+netdev@...n.ch>, <davem@...emloft.net>, <edumazet@...gle.com>,
	<kuba@...nel.org>, <pabeni@...hat.com>
CC: <parthiban.veerasooran@...rochip.com>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <UNGLinuxDriver@...rochip.com>,
	<jacob.e.keller@...el.com>
Subject: [PATCH net v4 0/2] Fixes on the OPEN Alliance TC6 10BASE-T1x MAC-PHY support generic lib

This patch series contain the below fixes.

- Infinite loop error when tx credits becomes 0.
- Race condition between tx skb reference pointers.

v2:
- Added mutex lock to protect tx skb reference handling.

v3:
- Added mutex protection in assigning new tx skb to waiting_tx_skb
  pointer.
- Explained the possible scenario for the race condition with the time
  diagram in the commit message.

v4:
- Replaced mutex with spin_lock_bh() variants as the start_xmit runs in
  BH/softirq context which can't take sleeping locks.


Parthiban Veerasooran (2):
  net: ethernet: oa_tc6: fix infinite loop error when tx credits becomes
    0
  net: ethernet: oa_tc6: fix tx skb race condition between reference
    pointers

 drivers/net/ethernet/oa_tc6.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)


base-commit: 2c27c7663390d28bc71e97500eb68e0ce2a7223f
-- 
2.34.1