This patch series makes qp state chages atomic between the various applicationa and IO threads. The rxe driver currently is very unsafe as qp state changes made by application threads e.g. ib_modify_qp() which changes the qp state are not protected against stale reads by IO threads. This patch series cleans up qp state by reducing the redundant state variables (qp->req.state, etc.) and then locking code fragments that access or change the remaining qp state variables. Signed-off-by: Bob Pearson <rpearsonhpe@xxxxxxxxx> Bob Pearson (5): RDMA/rxe: Remove qp->resp.state RDMA/rxe: Remove qp->comp.state RDMA/rxe: Remove qp->req.state RDMA/rxe: Move code to check if drained to subroutine RDMA/rxe: Protect QP state with qp->state_lock drivers/infiniband/sw/rxe/rxe_comp.c | 94 +++++----- drivers/infiniband/sw/rxe/rxe_net.c | 7 +- drivers/infiniband/sw/rxe/rxe_qp.c | 188 +++++++++----------- drivers/infiniband/sw/rxe/rxe_recv.c | 15 +- drivers/infiniband/sw/rxe/rxe_req.c | 94 ++++++---- drivers/infiniband/sw/rxe/rxe_resp.c | 18 +- drivers/infiniband/sw/rxe/rxe_verbs.c | 242 +++++++++++++++----------- drivers/infiniband/sw/rxe/rxe_verbs.h | 12 -- 8 files changed, 367 insertions(+), 303 deletions(-) base-commit: b6ba68555d75fd99f7daa9c5a5e476f8635cb155 prerequisite-patch-id: a6993e699da3603cc1d98d704434d467ab3f68f5 -- 2.37.2
