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Commit d85fc17b authored by Igor Russkikh's avatar Igor Russkikh Committed by David S. Miller
Browse files

aquantia: Setup max_mtu in ndev to enable jumbo frames 



Although hardware is capable for almost 16K MTU, without max_mtu field
correctly set it only allows standard MTU to be used.
This patch enables max MTU, calculating it from hardware maximum frame size
of 16352 octets (including FCS).

Fixes: 5513e164 ("net: ethernet: aquantia: Fixes for aq_ndev_change_mtu")

Signed-off-by: default avatarPavel Belous <Pavel.Belous@aquantia.com>
Signed-off-by: default avatarIgor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 62b982ee

drivers/net/ethernet/aquantia/atlantic/aq_nic.c

+2 −9
Original line number Diff line number Diff line
@@ -214,7 +214,6 @@ struct aq_nic_s *aq_nic_alloc_cold(const struct net_device_ops *ndev_ops, 
	SET_NETDEV_DEV(ndev, dev);



	ndev->if_port = port;

	ndev->min_mtu = ETH_MIN_MTU;

	self->ndev = ndev;



	self->aq_pci_func = aq_pci_func;
@@ -283,6 +282,7 @@ int aq_nic_ndev_init(struct aq_nic_s *self) 
	self->ndev->features = aq_hw_caps->hw_features;

	self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;

	self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;

	self->ndev->max_mtu = self->aq_hw_caps.mtu - ETH_FCS_LEN - ETH_HLEN;



	return 0;

}
@@ -693,16 +693,9 @@ int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev) 


int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)

{

	int err = 0;



	if (new_mtu > self->aq_hw_caps.mtu) {

		err = -EINVAL;

		goto err_exit;

	}

	self->aq_nic_cfg.mtu = new_mtu;



err_exit:

	return err;

	return 0;

}



int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0_internal.h

+1 −1
Original line number Diff line number Diff line
@@ -16,7 +16,7 @@ 


#include "../aq_common.h"



#define HW_ATL_B0_MTU_JUMBO (16000U)

#define HW_ATL_B0_MTU_JUMBO  16352U

#define HW_ATL_B0_MTU        1514U



#define HW_ATL_B0_TX_RINGS 4U