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Commit e0e31afb authored by Bob Sharp's avatar Bob Sharp Committed by Roland Dreier
Browse files

RDMA/nes: Enable MC/UC after changing MTU 



Re-enable multicast and unicast after changing MTU.

Signed-off-by: default avatarBob Sharp <bsharp@neteffect.com>
Signed-off-by: default avatarSweta Bhatt <sweta.bhatt@einfochips.com>
Signed-off-by: default avatarChien Tung <ctung@neteffect.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 7a8d1407

drivers/infiniband/hw/nes/nes_nic.c

+20 −0
Original line number Original line Diff line number Diff line
@@ -918,6 +918,10 @@ static int nes_netdev_change_mtu(struct net_device *netdev, int new_mtu) 
	struct nes_device *nesdev = nesvnic->nesdev;

	struct nes_device *nesdev = nesvnic->nesdev;

	int ret = 0;

	int ret = 0;

	u8 jumbomode = 0;

	u8 jumbomode = 0;

	u32 nic_active;

	u32 nic_active_bit;

	u32 uc_all_active;

	u32 mc_all_active;





	if ((new_mtu < ETH_ZLEN) || (new_mtu > max_mtu))

	if ((new_mtu < ETH_ZLEN) || (new_mtu > max_mtu))

		return -EINVAL;

		return -EINVAL;
@@ -931,8 +935,24 @@ static int nes_netdev_change_mtu(struct net_device *netdev, int new_mtu) 
	nes_nic_init_timer_defaults(nesdev, jumbomode);

	nes_nic_init_timer_defaults(nesdev, jumbomode);





	if (netif_running(netdev)) {

	if (netif_running(netdev)) {

		nic_active_bit = 1 << nesvnic->nic_index;

		mc_all_active = nes_read_indexed(nesdev,

				NES_IDX_NIC_MULTICAST_ALL) & nic_active_bit;

		uc_all_active = nes_read_indexed(nesdev,

				NES_IDX_NIC_UNICAST_ALL)  & nic_active_bit;



		nes_netdev_stop(netdev);

		nes_netdev_stop(netdev);

		nes_netdev_open(netdev);

		nes_netdev_open(netdev);



		nic_active = nes_read_indexed(nesdev,

					NES_IDX_NIC_MULTICAST_ALL);

		nic_active |= mc_all_active;

		nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL,

							nic_active);



		nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);

		nic_active |= uc_all_active;

		nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);

	}

	}





	return ret;

	return ret;