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Commit 756f77d2 authored by Shiraz Saleem's avatar Shiraz Saleem Committed by Jason Gunthorpe
Browse files

i40iw: Ignore LLP_DOUBT_REACHABILITY AE 



The LLP_DOUBT_REACHABILITY Asynchronous Event (AE) is an early
warning of a connection issue. It is followed by LLP_TOO_MANY_RETRIES
AE, if the retransmit threshold is reached and recovery is not possible
for the connection.

Currently we terminate the connection on receiving the
LLP_DOUBT_REACHABILITY AE. Ignore this AE and
terminate the connection only on LLP_TOO_MANY_RETRIES AE.

This improves the user experience on cable disconnect/reconnect
scenario while running iWARP traffic. On cable disconnect,
the QP traffic is paused and the user has a larger and more
reasonable timeout within which if the cable is reconnected,
traffic can continue.

Signed-off-by: default avatarShiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent df8b13a1

drivers/infiniband/hw/i40iw/i40iw_hw.c

+2 −1
Original line number Original line Diff line number Diff line
@@ -385,6 +385,8 @@ void i40iw_process_aeq(struct i40iw_device *iwdev) 
				iwcq->ibcq.event_handler(&ibevent, iwcq->ibcq.cq_context);

				iwcq->ibcq.event_handler(&ibevent, iwcq->ibcq.cq_context);

			}

			}

			break;

			break;

		case I40IW_AE_LLP_DOUBT_REACHABILITY:

			break;

		case I40IW_AE_PRIV_OPERATION_DENIED:

		case I40IW_AE_PRIV_OPERATION_DENIED:

		case I40IW_AE_STAG_ZERO_INVALID:

		case I40IW_AE_STAG_ZERO_INVALID:

		case I40IW_AE_IB_RREQ_AND_Q1_FULL:

		case I40IW_AE_IB_RREQ_AND_Q1_FULL:
@@ -403,7 +405,6 @@ void i40iw_process_aeq(struct i40iw_device *iwdev) 
		case I40IW_AE_LLP_SEGMENT_TOO_SMALL:

		case I40IW_AE_LLP_SEGMENT_TOO_SMALL:

		case I40IW_AE_LLP_SYN_RECEIVED:

		case I40IW_AE_LLP_SYN_RECEIVED:

		case I40IW_AE_LLP_TOO_MANY_RETRIES:

		case I40IW_AE_LLP_TOO_MANY_RETRIES:

		case I40IW_AE_LLP_DOUBT_REACHABILITY:

		case I40IW_AE_LCE_QP_CATASTROPHIC:

		case I40IW_AE_LCE_QP_CATASTROPHIC:

		case I40IW_AE_LCE_FUNCTION_CATASTROPHIC:

		case I40IW_AE_LCE_FUNCTION_CATASTROPHIC:

		case I40IW_AE_LCE_CQ_CATASTROPHIC:

		case I40IW_AE_LCE_CQ_CATASTROPHIC: