netdev - [PATCH net-next v1 4/6] TEST ONLY: lan743x: limit rx ring buffer size to 500 bytes

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Date:   Fri, 29 Jan 2021 14:52:38 -0500
From:   Sven Van Asbroeck <thesven73@...il.com>
To:     Bryan Whitehead <bryan.whitehead@...rochip.com>,
        UNGLinuxDriver@...rochip.com, David S Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Sven Van Asbroeck <thesven73@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Alexey Denisov <rtgbnm@...il.com>,
        Sergej Bauer <sbauer@...ckbox.su>,
        Tim Harvey <tharvey@...eworks.com>,
        Anders Rønningen <anders@...ningen.priv.no>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next v1 4/6] TEST ONLY: lan743x: limit rx ring buffer size to 500 bytes

From: Sven Van Asbroeck <thesven73@...il.com>

Signed-off-by: Sven Van Asbroeck <thesven73@...il.com>
---

Tree: git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git # 46eb3c108fe1

To: Bryan Whitehead <bryan.whitehead@...rochip.com>
To: UNGLinuxDriver@...rochip.com
To: "David S. Miller" <davem@...emloft.net>
To: Jakub Kicinski <kuba@...nel.org>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: Alexey Denisov <rtgbnm@...il.com>
Cc: Sergej Bauer <sbauer@...ckbox.su>
Cc: Tim Harvey <tharvey@...eworks.com>
Cc: Anders Rønningen <anders@...ningen.priv.no>
Cc: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org (open list)

 drivers/net/ethernet/microchip/lan743x_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index 618f0714a2cf..ed4959ad9237 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -1973,7 +1973,7 @@ static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index)
 	dma_addr_t dma_ptr;
 	int length;
 
-	length = netdev->mtu + ETH_HLEN + 4 + RX_HEAD_PADDING;
+	length = 500 + ETH_HLEN + 4 + RX_HEAD_PADDING;
 
 	descriptor = &rx->ring_cpu_ptr[index];
 	buffer_info = &rx->buffer_info[index];
-- 
2.17.1