@@ -2130,6 +2130,18 @@ static int dl_argv_parse(struct dl *dl, uint64_t o_required,
if (roce)
opts->port_fn_caps.value |= DEVLINK_PORT_FN_CAP_ROCE;
o_found |= DL_OPT_PORT_FN_CAPS;
+ } else if (dl_argv_match(dl, "migratable") &&
+ (o_all & DL_OPT_PORT_FN_CAPS)) {
+ bool mig;
+
+ dl_arg_inc(dl);
+ err = dl_argv_bool(dl, &mig);
+ if (err)
+ return err;
+ opts->port_fn_caps.selector |= DEVLINK_PORT_FN_CAP_MIGRATABLE;
+ if (mig)
+ opts->port_fn_caps.value |= DEVLINK_PORT_FN_CAP_MIGRATABLE;
+ o_found |= DL_OPT_PORT_FN_CAPS;
} else {
pr_err("Unknown option \"%s\"\n", dl_argv(dl));
return -EINVAL;
@@ -4405,7 +4417,7 @@ static void cmd_port_help(void)
pr_err(" devlink port split DEV/PORT_INDEX count COUNT\n");
pr_err(" devlink port unsplit DEV/PORT_INDEX\n");
pr_err(" devlink port function set DEV/PORT_INDEX [ hw_addr ADDR ] [ state { active | inactive } ]\n");
- pr_err(" [ roce { enable | disable } ]\n");
+ pr_err(" [ roce { enable | disable } ] [ migratable { enable | disable } ]\n");
pr_err(" devlink port function rate { help | show | add | del | set }\n");
pr_err(" devlink port param set DEV/PORT_INDEX name PARAMETER value VALUE cmode { permanent | driverinit | runtime }\n");
pr_err(" devlink port param show [DEV/PORT_INDEX name PARAMETER]\n");
@@ -4527,6 +4539,10 @@ static void pr_out_port_function(struct dl *dl, struct nlattr **tb_port)
print_string(PRINT_ANY, "roce", " roce %s",
port_fn_caps->value & DEVLINK_PORT_FN_CAP_ROCE ?
"enable" : "disable");
+ if (port_fn_caps->selector & DEVLINK_PORT_FN_CAP_MIGRATABLE)
+ print_string(PRINT_ANY, "migratable", " migratable %s",
+ port_fn_caps->value & DEVLINK_PORT_FN_CAP_MIGRATABLE ?
+ "enable" : "disable");
}
if (!dl->json_output)
@@ -4722,7 +4738,7 @@ static int cmd_port_param_show(struct dl *dl)
static void cmd_port_function_help(void)
{
pr_err("Usage: devlink port function set DEV/PORT_INDEX [ hw_addr ADDR ] [ state STATE ]\n");
- pr_err(" [ roce { enable | disable } ]\n");
+ pr_err(" [ roce { enable | disable } ] [ migratable { enable | disable } ]\n");
pr_err(" devlink port function rate { help | show | add | del | set }\n");
}
Suppor port function commands to enable / disable migratable capability, this is used to set the port function as migratable. Live migration is the process of transferring a live virtual machine from one physical host to another without disrupting its normal operation. In order for a VM to be able to perform LM, all the VM components must be able to perform migration. e.g.: to be migratable. In order for VF to be migratable, VF must be bound to VFIO driver with migration support. When migratable capability is enable for a function of the port, the device is making the necessary preparations for the function to be migratable, which might include disabling features which cannot be migrated. Example of LM with migratable function configuration: Set migratable of the VF's port function. $ devlink port show pci/0000:06:00.0/2 pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0 vfnum 1 function: hw_addr 00:00:00:00:00:00 migratable disable $ devlink port function set pci/0000:06:00.0/2 migratable enable $ devlink port show pci/0000:06:00.0/2 pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum 0 vfnum 1 function: hw_addr 00:00:00:00:00:00 migratable enable Bind VF to VFIO driver with migration support: $ echo <pci_id> > /sys/bus/pci/devices/0000:08:00.0/driver/unbind $ echo mlx5_vfio_pci > /sys/bus/pci/devices/0000:08:00.0/driver_override $ echo <pci_id> > /sys/bus/pci/devices/0000:08:00.0/driver/bind Attach VF to the VM. Start the VM. Perform LM. Signed-off-by: Shay Drory <shayd@nvidia.com> Reviewed-by: Moshe Shemesh <moshe@nvidia.com> --- devlink/devlink.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)