Commit b135e324 authored by Mike Marciniszyn's avatar Mike Marciniszyn Committed by Jason Gunthorpe
Browse files

IB/hfi1: Allow larger MTU without AIP 

The AIP code signals the phys_mtu in the following query_port()
fragment:

	props->phys_mtu = HFI1_CAP_IS_KSET(AIP) ? hfi1_max_mtu :
				ib_mtu_enum_to_int(props->max_mtu);

Using the largest MTU possible should not depend on AIP.

Fix by unconditionally using the hfi1_max_mtu value.

Fixes: 6d72344c ("IB/ipoib: Increase ipoib Datagram mode MTU's upper limit")
Link: https://lore.kernel.org/r/1644348309-174874-1-git-send-email-mike.marciniszyn@cornelisnetworks.com


Reviewed-by: default avatarDennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: default avatarMike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent a80501b8

drivers/infiniband/hw/hfi1/verbs.c

+1 −2
Original line number Diff line number Diff line
@@ -1397,8 +1397,7 @@ static int query_port(struct rvt_dev_info *rdi, u32 port_num, 
				      4096 : hfi1_max_mtu), IB_MTU_4096);

	props->active_mtu = !valid_ib_mtu(ppd->ibmtu) ? props->max_mtu :

		mtu_to_enum(ppd->ibmtu, IB_MTU_4096);

	props->phys_mtu = HFI1_CAP_IS_KSET(AIP) ? hfi1_max_mtu :

				ib_mtu_enum_to_int(props->max_mtu);

	props->phys_mtu = hfi1_max_mtu;



	return 0;

}