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")
Signed-off-by: Michal Kalderon <michal.kalderon@xxxxxxxxxxx>
---
drivers/infiniband/hw/qedr/main.c | 7 +++++++
drivers/infiniband/hw/qedr/verbs.c | 3 ++-
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 8e1365951fb6..1f32e8b8cc11 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -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");
}
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index 62fe9fc40f42..4ec2d05f63d1 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -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;
}
--
2.14.5
