Hi Jason, Doug, > -----Original Message----- > From: Leon Romanovsky [mailto:leon@xxxxxxxxxx] > Sent: Tuesday, March 13, 2018 9:06 AM > To: Doug Ledford <dledford@xxxxxxxxxx>; Jason Gunthorpe > <jgg@xxxxxxxxxxxx> > Cc: Leon Romanovsky <leonro@xxxxxxxxxxxx>; RDMA mailing list <linux- > rdma@xxxxxxxxxxxxxxx>; Daniel Jurgens <danielj@xxxxxxxxxxxx>; Mark Bloch > <markb@xxxxxxxxxxxx>; Parav Pandit <parav@xxxxxxxxxxxx> > Subject: [PATCH rdma-next v1 11/13] IB/{core, cm, cma, ipoib}: Resolve route > only while sending CM requests > Subject should be: Resolve route only when receiving CM requests. Can you please change the subject while applying this patch? > From: Parav Pandit <parav@xxxxxxxxxxxx> > > Currently CM request for RoCE follows following flow. > rdma_create_id() > rdma_resolve_addr() > rdma_resolve_route() > For RC QPs: > rdma_connect() > ->cma_connect_ib() > ->ib_send_cm_req() > ->cm_init_av_by_path() > ->ib_init_ah_attr_from_path() > For UD QPs: > rdma_connect() > ->cma_resolve_ib_udp() > ->ib_send_cm_sidr_req() > ->cm_init_av_by_path() > ->ib_init_ah_attr_from_path() > > In both the flows, route is already resolved before sending CM requests. > Therefore, code is refactored to avoid resolving route second time in ib_cm > layer. > ib_init_ah_attr_from_path() is extended to resolve route when it is not yet > resolved for RoCE link layer. This is achieved by caller setting route_resolved > field in path record whenever it has route already resolved. > -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
