diff options
| author | Jenny Derzhavetz <jennyf@mellanox.com> | 2015-12-24 13:20:48 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-12-27 03:27:10 +0300 |
| commit | 59caaed7a72a0e3750dfb84636dae6b781559310 (patch) | |
| tree | 69fce7d166f4552fbee364c1c6fe3879c4110070 /drivers/infiniband/ulp/iser/iser_verbs.c | |
| parent | e26d2d21ff8e3e4f9768960a83e4b7be43f0aeed (diff) | |
| download | linux-59caaed7a72a0e3750dfb84636dae6b781559310.tar.xz | |
IB/iser: Support the remote invalidation exception
Declare that we support remote invalidation in case we are:
1. using fastreg method
2. always registering memory
Detect the invalidated rkey from the work completion info so we
won't invalidate it locally. The spec mandates that we must not rely
on the target remote invalidate our rkey so we must check it upon
a receive (scsi response) completion.
Signed-off-by: Jenny Derzhavetz <jennyf@mellanox.com>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/ulp/iser/iser_verbs.c')
| -rw-r--r-- | drivers/infiniband/ulp/iser/iser_verbs.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c index 1752e40dd043..40c0f4978e2f 100644 --- a/drivers/infiniband/ulp/iser/iser_verbs.c +++ b/drivers/infiniband/ulp/iser/iser_verbs.c @@ -812,7 +812,9 @@ static void iser_route_handler(struct rdma_cm_id *cma_id) conn_param.rnr_retry_count = 6; memset(&req_hdr, 0, sizeof(req_hdr)); - req_hdr.flags = (ISER_ZBVA_NOT_SUP | ISER_SEND_W_INV_NOT_SUP); + req_hdr.flags = ISER_ZBVA_NOT_SUP; + if (!device->remote_inv_sup) + req_hdr.flags |= ISER_SEND_W_INV_NOT_SUP; conn_param.private_data = (void *)&req_hdr; conn_param.private_data_len = sizeof(struct iser_cm_hdr); @@ -827,7 +829,8 @@ failure: iser_connect_error(cma_id); } -static void iser_connected_handler(struct rdma_cm_id *cma_id) +static void iser_connected_handler(struct rdma_cm_id *cma_id, + const void *private_data) { struct iser_conn *iser_conn; struct ib_qp_attr attr; @@ -841,6 +844,15 @@ static void iser_connected_handler(struct rdma_cm_id *cma_id) (void)ib_query_qp(cma_id->qp, &attr, ~0, &init_attr); iser_info("remote qpn:%x my qpn:%x\n", attr.dest_qp_num, cma_id->qp->qp_num); + if (private_data) { + u8 flags = *(u8 *)private_data; + + iser_conn->snd_w_inv = !(flags & ISER_SEND_W_INV_NOT_SUP); + } + + iser_info("conn %p: negotiated %s invalidation\n", + iser_conn, iser_conn->snd_w_inv ? "remote" : "local"); + iser_conn->state = ISER_CONN_UP; complete(&iser_conn->up_completion); } @@ -892,7 +904,7 @@ static int iser_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *eve iser_route_handler(cma_id); break; case RDMA_CM_EVENT_ESTABLISHED: - iser_connected_handler(cma_id); + iser_connected_handler(cma_id, event->param.conn.private_data); break; case RDMA_CM_EVENT_ADDR_ERROR: case RDMA_CM_EVENT_ROUTE_ERROR: |