From f56bf76f79f3dc15f17433dda1b567d34f18e699 Mon Sep 17 00:00:00 2001 From: James Smart Date: Tue, 31 Mar 2020 09:49:50 -0700 Subject: [PATCH] nvme-fc: Ensure private pointers are NULL if no data Ensure that when allocations are done, and the lldd options indicate no private data is needed, that private pointers will be set to NULL (catches driver error that forgot to set private data size). Slightly reorg the allocations so that private data follows allocations for LS request/response buffers. Ensures better alignments for the buffers as well as the private pointer. Signed-off-by: James Smart Reviewed-by: Sagi Grimberg Reviewed-by: Hannes Reinecke Reviewed-by: Himanshu Madhani Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- drivers/nvme/host/fc.c | 81 ++++++++++++++++++++++++++++++------------------ drivers/nvme/target/fc.c | 5 ++- 2 files changed, 54 insertions(+), 32 deletions(-) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 83f9b2a..bf80b94 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -395,7 +395,10 @@ nvme_fc_register_localport(struct nvme_fc_port_info *pinfo, newrec->ops = template; newrec->dev = dev; ida_init(&newrec->endp_cnt); - newrec->localport.private = &newrec[1]; + if (template->local_priv_sz) + newrec->localport.private = &newrec[1]; + else + newrec->localport.private = NULL; newrec->localport.node_name = pinfo->node_name; newrec->localport.port_name = pinfo->port_name; newrec->localport.port_role = pinfo->port_role; @@ -704,7 +707,10 @@ nvme_fc_register_remoteport(struct nvme_fc_local_port *localport, newrec->remoteport.localport = &lport->localport; newrec->dev = lport->dev; newrec->lport = lport; - newrec->remoteport.private = &newrec[1]; + if (lport->ops->remote_priv_sz) + newrec->remoteport.private = &newrec[1]; + else + newrec->remoteport.private = NULL; newrec->remoteport.port_role = pinfo->port_role; newrec->remoteport.node_name = pinfo->node_name; newrec->remoteport.port_name = pinfo->port_name; @@ -1152,18 +1158,23 @@ nvme_fc_connect_admin_queue(struct nvme_fc_ctrl *ctrl, int ret, fcret = 0; lsop = kzalloc((sizeof(*lsop) + - ctrl->lport->ops->lsrqst_priv_sz + - sizeof(*assoc_rqst) + sizeof(*assoc_acc)), GFP_KERNEL); + sizeof(*assoc_rqst) + sizeof(*assoc_acc) + + ctrl->lport->ops->lsrqst_priv_sz), GFP_KERNEL); if (!lsop) { + dev_info(ctrl->ctrl.device, + "NVME-FC{%d}: send Create Association failed: ENOMEM\n", + ctrl->cnum); ret = -ENOMEM; goto out_no_memory; } - lsreq = &lsop->ls_req; - lsreq->private = (void *)&lsop[1]; - assoc_rqst = (struct fcnvme_ls_cr_assoc_rqst *) - (lsreq->private + ctrl->lport->ops->lsrqst_priv_sz); + assoc_rqst = (struct fcnvme_ls_cr_assoc_rqst *)&lsop[1]; assoc_acc = (struct fcnvme_ls_cr_assoc_acc *)&assoc_rqst[1]; + lsreq = &lsop->ls_req; + if (ctrl->lport->ops->lsrqst_priv_sz) + lsreq->private = &assoc_acc[1]; + else + lsreq->private = NULL; assoc_rqst->w0.ls_cmd = FCNVME_LS_CREATE_ASSOCIATION; assoc_rqst->desc_list_len = @@ -1261,18 +1272,23 @@ nvme_fc_connect_queue(struct nvme_fc_ctrl *ctrl, struct nvme_fc_queue *queue, int ret, fcret = 0; lsop = kzalloc((sizeof(*lsop) + - ctrl->lport->ops->lsrqst_priv_sz + - sizeof(*conn_rqst) + sizeof(*conn_acc)), GFP_KERNEL); + sizeof(*conn_rqst) + sizeof(*conn_acc) + + ctrl->lport->ops->lsrqst_priv_sz), GFP_KERNEL); if (!lsop) { + dev_info(ctrl->ctrl.device, + "NVME-FC{%d}: send Create Connection failed: ENOMEM\n", + ctrl->cnum); ret = -ENOMEM; goto out_no_memory; } - lsreq = &lsop->ls_req; - lsreq->private = (void *)&lsop[1]; - conn_rqst = (struct fcnvme_ls_cr_conn_rqst *) - (lsreq->private + ctrl->lport->ops->lsrqst_priv_sz); + conn_rqst = (struct fcnvme_ls_cr_conn_rqst *)&lsop[1]; conn_acc = (struct fcnvme_ls_cr_conn_acc *)&conn_rqst[1]; + lsreq = &lsop->ls_req; + if (ctrl->lport->ops->lsrqst_priv_sz) + lsreq->private = (void *)&conn_acc[1]; + else + lsreq->private = NULL; conn_rqst->w0.ls_cmd = FCNVME_LS_CREATE_CONNECTION; conn_rqst->desc_list_len = cpu_to_be32( @@ -1386,19 +1402,23 @@ nvme_fc_xmt_disconnect_assoc(struct nvme_fc_ctrl *ctrl) int ret; lsop = kzalloc((sizeof(*lsop) + - ctrl->lport->ops->lsrqst_priv_sz + - sizeof(*discon_rqst) + sizeof(*discon_acc)), - GFP_KERNEL); - if (!lsop) - /* couldn't sent it... too bad */ + sizeof(*discon_rqst) + sizeof(*discon_acc) + + ctrl->lport->ops->lsrqst_priv_sz), GFP_KERNEL); + if (!lsop) { + dev_info(ctrl->ctrl.device, + "NVME-FC{%d}: send Disconnect Association " + "failed: ENOMEM\n", + ctrl->cnum); return; + } - lsreq = &lsop->ls_req; - - lsreq->private = (void *)&lsop[1]; - discon_rqst = (struct fcnvme_ls_disconnect_assoc_rqst *) - (lsreq->private + ctrl->lport->ops->lsrqst_priv_sz); + discon_rqst = (struct fcnvme_ls_disconnect_assoc_rqst *)&lsop[1]; discon_acc = (struct fcnvme_ls_disconnect_assoc_acc *)&discon_rqst[1]; + lsreq = &lsop->ls_req; + if (ctrl->lport->ops->lsrqst_priv_sz) + lsreq->private = (void *)&discon_acc[1]; + else + lsreq->private = NULL; discon_rqst->w0.ls_cmd = FCNVME_LS_DISCONNECT_ASSOC; discon_rqst->desc_list_len = cpu_to_be32( @@ -1784,15 +1804,17 @@ nvme_fc_init_aen_ops(struct nvme_fc_ctrl *ctrl) struct nvme_fc_fcp_op *aen_op; struct nvme_fc_cmd_iu *cmdiu; struct nvme_command *sqe; - void *private; + void *private = NULL; int i, ret; aen_op = ctrl->aen_ops; for (i = 0; i < NVME_NR_AEN_COMMANDS; i++, aen_op++) { - private = kzalloc(ctrl->lport->ops->fcprqst_priv_sz, + if (ctrl->lport->ops->fcprqst_priv_sz) { + private = kzalloc(ctrl->lport->ops->fcprqst_priv_sz, GFP_KERNEL); - if (!private) - return -ENOMEM; + if (!private) + return -ENOMEM; + } cmdiu = &aen_op->cmd_iu; sqe = &cmdiu->sqe; @@ -1823,9 +1845,6 @@ nvme_fc_term_aen_ops(struct nvme_fc_ctrl *ctrl) aen_op = ctrl->aen_ops; for (i = 0; i < NVME_NR_AEN_COMMANDS; i++, aen_op++) { - if (!aen_op->fcp_req.private) - continue; - __nvme_fc_exit_request(ctrl, aen_op); kfree(aen_op->fcp_req.private); diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c index 66de6bd..66a60a2 100644 --- a/drivers/nvme/target/fc.c +++ b/drivers/nvme/target/fc.c @@ -1047,7 +1047,10 @@ nvmet_fc_register_targetport(struct nvmet_fc_port_info *pinfo, newrec->fc_target_port.node_name = pinfo->node_name; newrec->fc_target_port.port_name = pinfo->port_name; - newrec->fc_target_port.private = &newrec[1]; + if (template->target_priv_sz) + newrec->fc_target_port.private = &newrec[1]; + else + newrec->fc_target_port.private = NULL; newrec->fc_target_port.port_id = pinfo->port_id; newrec->fc_target_port.port_num = idx; INIT_LIST_HEAD(&newrec->tgt_list); -- 2.7.4