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RDMA/qedr: Fix iWARP active mtu display

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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: f5b1b1775be6 ("RDMA/qedr: Add iWARP support in existing verbs")
Link: https://lore.kernel.org/r/20200902165741.8355-7-michal.kalderon@marvell.com
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Michal Kalderon 2020-09-02 19:57:39 +03:00 committed by Jason Gunthorpe
parent 97fb3e3347
commit cc293f5420
2 changed files with 9 additions and 1 deletions
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7
drivers/infiniband/hw/qedr/main.c
View File

@ -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");
}

3
drivers/infiniband/hw/qedr/verbs.c
View File

@ -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;
}