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path: root/drivers/net/ethernet/netronome/nfp/nfp_app.c
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Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfp_app.c')
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_app.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_app.c b/drivers/net/ethernet/netronome/nfp/nfp_app.c
index 68a0991aac22..3a973282b2bb 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_app.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_app.c
@@ -131,11 +131,100 @@ nfp_app_reprs_set(struct nfp_app *app, enum nfp_repr_type type,
struct nfp_reprs *old;
old = nfp_reprs_get_locked(app, type);
+ rtnl_lock();
rcu_assign_pointer(app->reprs[type], reprs);
+ rtnl_unlock();
return old;
}
+static void
+nfp_app_netdev_feat_change(struct nfp_app *app, struct net_device *netdev)
+{
+ struct nfp_net *nn;
+ unsigned int type;
+
+ if (!nfp_netdev_is_nfp_net(netdev))
+ return;
+ nn = netdev_priv(netdev);
+ if (nn->app != app)
+ return;
+
+ for (type = 0; type < __NFP_REPR_TYPE_MAX; type++) {
+ struct nfp_reprs *reprs;
+ unsigned int i;
+
+ reprs = rtnl_dereference(app->reprs[type]);
+ if (!reprs)
+ continue;
+
+ for (i = 0; i < reprs->num_reprs; i++) {
+ struct net_device *repr;
+
+ repr = rtnl_dereference(reprs->reprs[i]);
+ if (!repr)
+ continue;
+
+ nfp_repr_transfer_features(repr, netdev);
+ }
+ }
+}
+
+static int
+nfp_app_netdev_event(struct notifier_block *nb, unsigned long event, void *ptr)
+{
+ struct net_device *netdev;
+ struct nfp_app *app;
+
+ netdev = netdev_notifier_info_to_dev(ptr);
+ app = container_of(nb, struct nfp_app, netdev_nb);
+
+ /* Handle events common code is interested in */
+ switch (event) {
+ case NETDEV_FEAT_CHANGE:
+ nfp_app_netdev_feat_change(app, netdev);
+ break;
+ }
+
+ /* Call offload specific handlers */
+ if (app->type->netdev_event)
+ return app->type->netdev_event(app, netdev, event, ptr);
+ return NOTIFY_DONE;
+}
+
+int nfp_app_start(struct nfp_app *app, struct nfp_net *ctrl)
+{
+ int err;
+
+ app->ctrl = ctrl;
+
+ if (app->type->start) {
+ err = app->type->start(app);
+ if (err)
+ return err;
+ }
+
+ app->netdev_nb.notifier_call = nfp_app_netdev_event;
+ err = register_netdevice_notifier(&app->netdev_nb);
+ if (err)
+ goto err_app_stop;
+
+ return 0;
+
+err_app_stop:
+ if (app->type->stop)
+ app->type->stop(app);
+ return err;
+}
+
+void nfp_app_stop(struct nfp_app *app)
+{
+ unregister_netdevice_notifier(&app->netdev_nb);
+
+ if (app->type->stop)
+ app->type->stop(app);
+}
+
struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id)
{
struct nfp_app *app;