[PATCH net-next RFC v3 02/14] devlink: Add reload actions counters

[Moshe Shemesh]

Add reload actions counters to hold the history per reload action type.
For example, the number of times fw_activate has been done on this
device since the driver module was added or if the firmware activation
was done with or without reset.
The function devlink_reload_actions_cnts_update() is exported to enable
also drivers update on reload actions done, for example in case firmware
activation with reset finished successfully but was initiated by remote
host.

Signed-off-by: Moshe Shemesh <mo...@mellanox.com>
---
v2 -> v3:
- New patch
---
 include/net/devlink.h |  2 ++
 net/core/devlink.c    | 24 +++++++++++++++++++++---
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/include/net/devlink.h b/include/net/devlink.h
index b8f0152a1fff..0547f0707d92 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -38,6 +38,7 @@ struct devlink {
        struct list_head trap_policer_list;
        const struct devlink_ops *ops;
        struct xarray snapshot_ids;
+       u32 reload_actions_cnts[DEVLINK_RELOAD_ACTION_MAX];
        struct device *dev;
        possible_net_t _net;
        struct mutex lock; /* Serializes access to devlink instance specific 
objects such as
@@ -1372,6 +1373,7 @@ void
 devlink_health_reporter_recovery_done(struct devlink_health_reporter 
*reporter);
 
 bool devlink_is_reload_failed(const struct devlink *devlink);
+void devlink_reload_actions_cnts_update(struct devlink *devlink, unsigned long 
actions_done);
 
 void devlink_flash_update_begin_notify(struct devlink *devlink);
 void devlink_flash_update_end_notify(struct devlink *devlink);
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 8d4137ad40db..20a29c34ff71 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -2969,10 +2969,23 @@ bool devlink_is_reload_failed(const struct devlink 
*devlink)
 }
 EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
 
+void devlink_reload_actions_cnts_update(struct devlink *devlink, unsigned long 
actions_done)
+{
+       int action;
+
+       for (action = 0; action < DEVLINK_RELOAD_ACTION_MAX; action++) {
+               if (!test_bit(action, &actions_done))
+                       continue;
+               devlink->reload_actions_cnts[action]++;
+       }
+}
+EXPORT_SYMBOL_GPL(devlink_reload_actions_cnts_update);
+
 static int devlink_reload(struct devlink *devlink, struct net *dest_net,
                          enum devlink_reload_action action, struct 
netlink_ext_ack *extack,
-                         unsigned long *actions_done)
+                         unsigned long *actions_done_out)
 {
+       unsigned long actions_done;
        int err;
 
        if (!devlink->reload_enabled)
@@ -2985,9 +2998,14 @@ static int devlink_reload(struct devlink *devlink, 
struct net *dest_net,
        if (dest_net && !net_eq(dest_net, devlink_net(devlink)))
                devlink_reload_netns_change(devlink, dest_net);
 
-       err = devlink->ops->reload_up(devlink, action, extack, actions_done);
+       err = devlink->ops->reload_up(devlink, action, extack, &actions_done);
        devlink_reload_failed_set(devlink, !!err);
-       return err;
+       if (err)
+               return err;
+       devlink_reload_actions_cnts_update(devlink, actions_done);
+       if (actions_done_out)
+               *actions_done_out = actions_done;
+       return 0;
 }
 
 static int
-- 
2.17.1