diff mbox series

[v6,net-next,17/18] net: mvpp2: limit minimum ring size to 1024 descriptors

Message ID 1612086664-23972-18-git-send-email-stefanc@marvell.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: mvpp2: Add TX Flow Control support | expand

Commit Message

Stefan Chulski Jan. 31, 2021, 9:51 a.m. UTC 
From: Stefan Chulski <stefanc@marvell.com>

To support Flow Control ring size should be at least 1024 descriptors.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 7632810..98849b0 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -4543,6 +4543,8 @@  static int mvpp2_check_ringparam_valid(struct net_device *dev,
 
 	if (ring->rx_pending > MVPP2_MAX_RXD_MAX)
 		new_rx_pending = MVPP2_MAX_RXD_MAX;
+	else if (ring->rx_pending < MSS_THRESHOLD_START)
+		new_rx_pending = MSS_THRESHOLD_START;
 	else if (!IS_ALIGNED(ring->rx_pending, 16))
 		new_rx_pending = ALIGN(ring->rx_pending, 16);