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author | Parav Pandit <parav@nvidia.com> | 2020-09-09 07:50:37 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2020-09-09 14:19:55 -0700 |
commit | 3a2d9588c4f79adae6a0e986b64ebdd5b38085c6 (patch) | |
tree | 585692e81f57b6a6f94dc75cdd767f0e1ea8a1e3 /include | |
parent | 05b595e9c44acaca94192c6db430a489c1b212a7 (diff) | |
download | linux-stable-3a2d9588c4f79adae6a0e986b64ebdd5b38085c6.tar.gz linux-stable-3a2d9588c4f79adae6a0e986b64ebdd5b38085c6.tar.bz2 linux-stable-3a2d9588c4f79adae6a0e986b64ebdd5b38085c6.zip |
devlink: Introduce controller number
A devlink port may be for a controller consist of PCI device.
A devlink instance holds ports of two types of controllers.
(1) controller discovered on same system where eswitch resides
This is the case where PCI PF/VF of a controller and devlink eswitch
instance both are located on a single system.
(2) controller located on external host system.
This is the case where a controller is located in one system and its
devlink eswitch ports are located in a different system.
When a devlink eswitch instance serves the devlink ports of both
controllers together, PCI PF/VF numbers may overlap.
Due to this a unique phys_port_name cannot be constructed.
For example in below such system controller-0 and controller-1, each has
PCI PF pf0 whose eswitch ports can be present in controller-0.
These results in phys_port_name as "pf0" for both.
Similar problem exists for VFs and upcoming Sub functions.
An example view of two controller systems:
---------------------------------------------------------
| |
| --------- --------- ------- ------- |
----------- | | vf(s) | | sf(s) | |vf(s)| |sf(s)| |
| server | | ------- ----/---- ---/----- ------- ---/--- ---/--- |
| pci rc |=== | pf0 |______/________/ | pf1 |___/_______/ |
| connect | | ------- ------- |
----------- | | controller_num=1 (no eswitch) |
------|--------------------------------------------------
(internal wire)
|
---------------------------------------------------------
| devlink eswitch ports and reps |
| ----------------------------------------------------- |
| |ctrl-0 | ctrl-0 | ctrl-0 | ctrl-0 | ctrl-0 |ctrl-0 | |
| |pf0 | pf0vfN | pf0sfN | pf1 | pf1vfN |pf1sfN | |
| ----------------------------------------------------- |
| |ctrl-1 | ctrl-1 | ctrl-1 | ctrl-1 | ctrl-1 |ctrl-1 | |
| |pf1 | pf1vfN | pf1sfN | pf1 | pf1vfN |pf0sfN | |
| ----------------------------------------------------- |
| |
| |
| --------- --------- ------- ------- |
| | vf(s) | | sf(s) | |vf(s)| |sf(s)| |
| ------- ----/---- ---/----- ------- ---/--- ---/--- |
| | pf0 |______/________/ | pf1 |___/_______/ |
| ------- ------- |
| |
| local controller_num=0 (eswitch) |
---------------------------------------------------------
An example devlink port for external controller with controller
number = 1 for a VF 1 of PF 0:
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev ens2f0pf0vf1 flavour pcivf controller 1 pfnum 0 vfnum 1 external true splittable false
function:
hw_addr 00:00:00:00:00:00
$ devlink port show pci/0000:06:00.0/2 -jp
{
"port": {
"pci/0000:06:00.0/2": {
"type": "eth",
"netdev": "ens2f0pf0vf1",
"flavour": "pcivf",
"controller": 1,
"pfnum": 0,
"vfnum": 1,
"external": true,
"splittable": false,
"function": {
"hw_addr": "00:00:00:00:00:00"
}
}
}
}
Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r-- | include/net/devlink.h | 9 | ||||
-rw-r--r-- | include/uapi/linux/devlink.h | 1 |
2 files changed, 8 insertions, 2 deletions
diff --git a/include/net/devlink.h b/include/net/devlink.h index 2dad8c9151f4..eaec0a8cc5ef 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -59,21 +59,25 @@ struct devlink_port_phys_attrs { /** * struct devlink_port_pci_pf_attrs - devlink port's PCI PF attributes + * @controller: Associated controller number * @pf: Associated PCI PF number for this port. * @external: when set, indicates if a port is for an external controller */ struct devlink_port_pci_pf_attrs { + u32 controller; u16 pf; u8 external:1; }; /** * struct devlink_port_pci_vf_attrs - devlink port's PCI VF attributes + * @controller: Associated controller number * @pf: Associated PCI PF number for this port. * @vf: Associated PCI VF for of the PCI PF for this port. * @external: when set, indicates if a port is for an external controller */ struct devlink_port_pci_vf_attrs { + u32 controller; u16 pf; u16 vf; u8 external:1; @@ -1219,8 +1223,9 @@ void devlink_port_type_ib_set(struct devlink_port *devlink_port, void devlink_port_type_clear(struct devlink_port *devlink_port); void devlink_port_attrs_set(struct devlink_port *devlink_port, struct devlink_port_attrs *devlink_port_attrs); -void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u16 pf, bool external); -void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, +void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller, + u16 pf, bool external); +void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller, u16 pf, u16 vf, bool external); int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, u32 size, u16 ingress_pools_count, diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index 40823ed7e05a..40d35145c879 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -459,6 +459,7 @@ enum devlink_attr { DEVLINK_ATTR_PORT_SPLITTABLE, /* u8 */ DEVLINK_ATTR_PORT_EXTERNAL, /* u8 */ + DEVLINK_ATTR_PORT_CONTROLLER_NUMBER, /* u32 */ /* add new attributes above here, update the policy in devlink.c */ __DEVLINK_ATTR_MAX, |