From: Gatis Peisenieks <gatis@mikrotik.com>
To: chris.snook@gmail.com, davem@davemloft.net, kuba@kernel.org,
hkallweit1@gmail.com, jesse.brandeburg@intel.com,
dchickles@marvell.com, tully@mikrotik.com,
eric.dumazet@gmail.com
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Gatis Peisenieks <gatis@mikrotik.com>
Subject: [PATCH net-next 3/4] atl1c: adjust max mtu according to Mikrotik 10/25G NIC ability
Date: Tue, 11 May 2021 22:05:17 +0300 [thread overview]
Message-ID: <20210511190518.8901-4-gatis@mikrotik.com> (raw)
In-Reply-To: <20210511190518.8901-1-gatis@mikrotik.com>
The new Mikrotik 10/25G NIC supports jumbo frames. Jumbo frames are
supported for TSO as well.
This enables the support for mtu up to 9500 bytes.
Signed-off-by: Gatis Peisenieks <gatis@mikrotik.com>
---
drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index 2a8ab51b0ed9..c34ad1c3a532 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -478,6 +478,8 @@ static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter,
static netdev_features_t atl1c_fix_features(struct net_device *netdev,
netdev_features_t features)
{
+ struct atl1c_adapter *adapter = netdev_priv(netdev);
+ struct atl1c_hw *hw = &adapter->hw;
/*
* Since there is no support for separate rx/tx vlan accel
* enable/disable make sure tx flag is always in same state as rx.
@@ -487,8 +489,10 @@ static netdev_features_t atl1c_fix_features(struct net_device *netdev,
else
features &= ~NETIF_F_HW_VLAN_CTAG_TX;
- if (netdev->mtu > MAX_TSO_FRAME_SIZE)
- features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
+ if (hw->nic_type != athr_mt) {
+ if (netdev->mtu > MAX_TSO_FRAME_SIZE)
+ features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
+ }
return features;
}
@@ -517,6 +521,9 @@ static void atl1c_set_max_mtu(struct net_device *netdev)
netdev->max_mtu = MAX_JUMBO_FRAME_SIZE -
(ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
break;
+ case athr_mt:
+ netdev->max_mtu = 9500;
+ break;
/* The 10/100 devices don't support jumbo packets, max_mtu 1500 */
default:
netdev->max_mtu = ETH_DATA_LEN;
--
2.31.1
next prev parent reply other threads:[~2021-05-11 19:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-11 19:05 [PATCH net-next 0/4] atl1c: support for Mikrotik 10/25G NIC features Gatis Peisenieks
2021-05-11 19:05 ` [PATCH net-next 1/4] atl1c: show correct link speed on Mikrotik 10/25G NIC Gatis Peisenieks
2021-05-11 19:05 ` [PATCH net-next 2/4] atl1c: improve performance by avoiding unnecessary pcie writes on xmit Gatis Peisenieks
2021-05-11 21:39 ` Eric Dumazet
2021-05-12 7:53 ` Gatis Peisenieks
2021-05-12 2:39 ` Chris Snook
2021-05-12 8:33 ` David Laight
2021-05-12 14:35 ` Gatis Peisenieks
2021-05-11 19:05 ` Gatis Peisenieks [this message]
2021-05-11 19:05 ` [PATCH net-next 4/4] atl1c: enable rx csum offload on Mikrotik 10/25G NIC Gatis Peisenieks
-- strict thread matches above, loose matches on Subject: below --
2021-04-19 14:34 [PATCH net-next 0/4] atl1c: support for Mikrotik 10/25G NIC features Gatis Peisenieks
2021-04-19 14:34 ` [PATCH net-next 3/4] atl1c: adjust max mtu according to Mikrotik 10/25G NIC ability Gatis Peisenieks
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