bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 06:44:00 -04:00
Code Issues Packages Projects Releases Wiki Activity

nvme: Add PCI transport type

Browse Source 
Define the transport type NVMF_TRTYPE_PCI for PCI endpoint targets.
This transport type is defined using the value 0 which is reserved in
the NVMe base specifications v2.1 (Figure 294). Given that struct
nvmet_port are zeroed out on creation, to avoid having this transsport
type becoming the new default, nvmet_referral_make() and
nvmet_ports_make() are modified to initialize a port discovery address
transport type field (disc_addr.trtype) to NVMF_TRTYPE_MAX.

Any port using this transport type is also skipped and not reported in
the discovery log page (nvmet_execute_disc_get_log_page()).

The helper function nvmet_is_pci_ctrl() is also introduced to check if
a target controller uses the PCI transport.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Rick Wertenbroek <rick.wertenbroek@gmail.com>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Damien Le Moal
2025-01-04 13:59:39 +09:00
committed by Keith Busch
parent 35c593e530
commit 200adac758
4 changed files with 13 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/nvme/target/configfs.c
View File

@@ -37,6 +37,7 @@ static struct nvmet_type_name_map nvmet_transport[] = {
{ NVMF_TRTYPE_RDMA, "rdma" },
{ NVMF_TRTYPE_FC, "fc" },
{ NVMF_TRTYPE_TCP, "tcp" },
{ NVMF_TRTYPE_PCI, "pci" },
{ NVMF_TRTYPE_LOOP, "loop" },
};
@@ -46,6 +47,7 @@ static const struct nvmet_type_name_map nvmet_addr_family[] = {
{ NVMF_ADDR_FAMILY_IP6, "ipv6" },
{ NVMF_ADDR_FAMILY_IB, "ib" },
{ NVMF_ADDR_FAMILY_FC, "fc" },
{ NVMF_ADDR_FAMILY_PCI, "pci" },
{ NVMF_ADDR_FAMILY_LOOP, "loop" },
};
@@ -1839,6 +1841,7 @@ static struct config_group *nvmet_referral_make(
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&port->entry);
port->disc_addr.trtype = NVMF_TRTYPE_MAX;
config_group_init_type_name(&port->group, name, &nvmet_referral_type);
return &port->group;
@@ -2064,6 +2067,7 @@ static struct config_group *nvmet_ports_make(struct config_group *group,
port->inline_data_size = -1; /* < 0 == let the transport choose */
port->max_queue_size = -1; /* < 0 == let the transport choose */
port->disc_addr.trtype = NVMF_TRTYPE_MAX;
port->disc_addr.portid = cpu_to_le16(portid);
port->disc_addr.adrfam = NVMF_ADDR_FAMILY_MAX;
port->disc_addr.treq = NVMF_TREQ_DISABLE_SQFLOW;