diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index e7b7406c4e22..4333e2c5b4f5 100644
--- a/drivers/nvme/target/nvmet.h
+++ b/drivers/nvme/target/nvmet.h
@@ -26,6 +26,7 @@
#include <linux/configfs.h>
#include <linux/rcupdate.h>
#include <linux/blkdev.h>
+#include <linux/radix-tree.h>
#define NVMET_ASYNC_EVENTS 4
#define NVMET_ERROR_LOG_SLOTS 128
@@ -77,6 +78,9 @@ struct nvmet_ns {
struct completion disable_done;
mempool_t *bvec_pool;
struct kmem_cache *bvec_cache;
+
+ int use_p2pmem;
+ struct pci_dev *p2p_dev;
};
static inline struct nvmet_ns *to_nvmet_ns(struct config_item *item)
@@ -84,6 +88,11 @@ static inline struct nvmet_ns *to_nvmet_ns(struct
config_item *item)
return container_of(to_config_group(item), struct nvmet_ns, group);
}
+static inline struct device *nvmet_ns_dev(struct nvmet_ns *ns)
+{
+ return disk_to_dev(ns->bdev->bd_disk);
+}
This needs to handle non bdev namespaces.
+
struct nvmet_cq {
u16 qid;
u16 size;
@@ -184,6 +193,9 @@ struct nvmet_ctrl {
char subsysnqn[NVMF_NQN_FIELD_LEN];
char hostnqn[NVMF_NQN_FIELD_LEN];
+
+ struct device *p2p_client;
+ struct radix_tree_root p2p_ns_map;
};
struct nvmet_subsys {
@@ -294,6 +306,9 @@ struct nvmet_req {
void (*execute)(struct nvmet_req *req);
const struct nvmet_fabrics_ops *ops;
+
+ struct pci_dev *p2p_dev;
+ struct device *p2p_client;
};
extern struct workqueue_struct *buffered_io_wq;
diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c
index 9e091e78a2f0..3f7971d3706d 100644
--- a/drivers/nvme/target/rdma.c
+++ b/drivers/nvme/target/rdma.c
@@ -749,6 +749,8 @@ static void nvmet_rdma_handle_command(struct
nvmet_rdma_queue *queue,
cmd->send_sge.addr, cmd->send_sge.length,
DMA_TO_DEVICE);
+ cmd->req.p2p_client = &queue->dev->device->dev;
+
if (!nvmet_req_init(&cmd->req, &queue->nvme_cq,
&queue->nvme_sq, &nvmet_rdma_ops))
return;
And this?
--
diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c
index ef286b72d958..3d12f5f4568d 100644
--- a/drivers/nvme/target/fc.c
+++ b/drivers/nvme/target/fc.c
@@ -2280,6 +2280,7 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport
*tgtport,
fod->req.cmd = &fod->cmdiubuf.sqe;
fod->req.rsp = &fod->rspiubuf.cqe;
fod->req.port = tgtport->pe->port;
+ fod->req.p2p_client = tgtport->dev;
/* clear any response payload */
memset(&fod->rspiubuf, 0, sizeof(fod->rspiubuf));
--
Other than that this looks good!
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