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nvmet-rdma: set max_queue_size for RDMA transport

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A new port configuration was added to set max_queue_size. Clamp user
configuration to RDMA transport limits.

Increase the maximal queue size of RDMA controllers from 128 to 256
(the default size stays 128 same as before).

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Israel Rukshin <israelr@nvidia.com>
Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Max Gurtovoy 2024-01-23 16:40:32 +02:00 committed by Keith Busch
parent ca2b221d89
commit f096ba3286
2 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/nvme/target/rdma.c
View File

@ -1956,6 +1956,14 @@ static int nvmet_rdma_add_port(struct nvmet_port *nport)
nport->inline_data_size = NVMET_RDMA_MAX_INLINE_DATA_SIZE;
}
if (nport->max_queue_size < 0) {
nport->max_queue_size = NVME_RDMA_DEFAULT_QUEUE_SIZE;
} else if (nport->max_queue_size > NVME_RDMA_MAX_QUEUE_SIZE) {
pr_warn("max_queue_size %u is too large, reducing to %u\n",
nport->max_queue_size, NVME_RDMA_MAX_QUEUE_SIZE);
nport->max_queue_size = NVME_RDMA_MAX_QUEUE_SIZE;
}
ret = inet_pton_with_scope(&init_net, af, nport->disc_addr.traddr,
nport->disc_addr.trsvcid, &port->addr);
if (ret) {

3
include/linux/nvme-rdma.h
View File

@ -8,8 +8,9 @@
#define NVME_RDMA_IP_PORT 4420
#define NVME_RDMA_MAX_QUEUE_SIZE 128
#define NVME_RDMA_MAX_QUEUE_SIZE 256
#define NVME_RDMA_MAX_METADATA_QUEUE_SIZE 128
#define NVME_RDMA_DEFAULT_QUEUE_SIZE 128
enum nvme_rdma_cm_fmt {
NVME_RDMA_CM_FMT_1_0 = 0x0,