[PATCH rdma-next 6/8] RDMA/qedr: Fix iWARP active mtu display
From: Michal Kalderon <hidden>
Date: 2020-09-02 16:58:40
Also in:
linux-rdma
Subsystem:
infiniband subsystem, qlogic ql4xxx rdma driver, the rest · Maintainers:
Jason Gunthorpe, Leon Romanovsky, Michal Kalderon, Linus Torvalds
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 <redacted>
---
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