Commit cc293f54 authored by Michal Kalderon's avatar Michal Kalderon Committed by Jason Gunthorpe
Browse files

RDMA/qedr: Fix iWARP active mtu display 

Currently iWARP does not support mtu-change. Notify user when MTU changes
that reload of qedr is required for mtu to change.  Display the correct
active mtu.

Fixes: f5b1b177 ("RDMA/qedr: Add iWARP support in existing verbs")
Link: https://lore.kernel.org/r/20200902165741.8355-7-michal.kalderon@marvell.com


Signed-off-by: default avatarMichal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent 97fb3e33

drivers/infiniband/hw/qedr/main.c

+7 −0
Original line number Diff line number Diff line
@@ -1026,6 +1026,13 @@ static void qedr_notify(struct qedr_dev *dev, enum qede_rdma_event event) 
	case QEDE_CHANGE_ADDR:

		qedr_mac_address_change(dev);

		break;

	case QEDE_CHANGE_MTU:

		if (rdma_protocol_iwarp(&dev->ibdev, 1))

			if (dev->ndev->mtu != dev->iwarp_max_mtu)

				DP_NOTICE(dev,

					  "Mtu was changed from %d to %d. This will not take affect for iWARP until qedr is reloaded\n",

					  dev->iwarp_max_mtu, dev->ndev->mtu);

		break;

	default:

		pr_err("Event not supported\n");

	}

drivers/infiniband/hw/qedr/verbs.c

+2 −1
Original line number Diff line number Diff line
@@ -231,15 +231,16 @@ int qedr_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *attr) 
		attr->phys_state = IB_PORT_PHYS_STATE_DISABLED;

	}

	attr->max_mtu = IB_MTU_4096;

	attr->active_mtu = iboe_get_mtu(dev->ndev->mtu);

	attr->lid = 0;

	attr->lmc = 0;

	attr->sm_lid = 0;

	attr->sm_sl = 0;

	attr->ip_gids = true;

	if (rdma_protocol_iwarp(&dev->ibdev, 1)) {

		attr->active_mtu = iboe_get_mtu(dev->iwarp_max_mtu);

		attr->gid_tbl_len = 1;

	} else {

		attr->active_mtu = iboe_get_mtu(dev->ndev->mtu);

		attr->gid_tbl_len = QEDR_MAX_SGID;

		attr->pkey_tbl_len = QEDR_ROCE_PKEY_TABLE_LEN;

	}