change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/drivers/net/ethernet/netronome/nfp/nfp_app.c
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..
@@ -1,35 +1,5 @@
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-/*
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- * Copyright (C) 2017-2018 Netronome Systems, Inc.
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- *
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- * This software is dual licensed under the GNU General License Version 2,
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- * June 1991 as shown in the file COPYING in the top-level directory of this
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- * source tree or the BSD 2-Clause License provided below.  You have the
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- * option to license this software under the complete terms of either license.
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- *
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- * The BSD 2-Clause License:
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- *
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- *     Redistribution and use in source and binary forms, with or
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- *     without modification, are permitted provided that the following
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- *     conditions are met:
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- *
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- *      1. Redistributions of source code must retain the above
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- *         copyright notice, this list of conditions and the following
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- *         disclaimer.
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- *
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- *      2. Redistributions in binary form must reproduce the above
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- *         copyright notice, this list of conditions and the following
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- *         disclaimer in the documentation and/or other materials
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- *         provided with the distribution.
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- *
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- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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- * SOFTWARE.
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- */
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+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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+/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
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3
 
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 #include <linux/bug.h>
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 #include <linux/lockdep.h>
..
..
@@ -59,6 +29,11 @@
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 	[NFP_APP_ACTIVE_BUFFER_MGMT_NIC] = &app_abm,
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 #endif
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 };
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+
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+void nfp_check_rhashtable_empty(void *ptr, void *arg)
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+{
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+	WARN_ON_ONCE(1);
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+}
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37
 
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 struct nfp_app *nfp_app_from_netdev(struct net_device *netdev)
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 {
..
..
@@ -156,11 +131,100 @@
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 	struct nfp_reprs *old;
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132
 
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 	old = nfp_reprs_get_locked(app, type);
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+	rtnl_lock();
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 	rcu_assign_pointer(app->reprs[type], reprs);
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+	rtnl_unlock();
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 	return old;
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 }
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140
 
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+static void
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+nfp_app_netdev_feat_change(struct nfp_app *app, struct net_device *netdev)
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+{
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+	struct nfp_net *nn;
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+	unsigned int type;
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+
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+	if (!nfp_netdev_is_nfp_net(netdev))
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+		return;
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+	nn = netdev_priv(netdev);
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+	if (nn->app != app)
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+		return;
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+
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+	for (type = 0; type < __NFP_REPR_TYPE_MAX; type++) {
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+		struct nfp_reprs *reprs;
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+		unsigned int i;
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+
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+		reprs = rtnl_dereference(app->reprs[type]);
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+		if (!reprs)
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+			continue;
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+
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+		for (i = 0; i < reprs->num_reprs; i++) {
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+			struct net_device *repr;
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+
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+			repr = rtnl_dereference(reprs->reprs[i]);
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+			if (!repr)
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+				continue;
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+
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+			nfp_repr_transfer_features(repr, netdev);
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+		}
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+	}
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+}
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+
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+static int
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+nfp_app_netdev_event(struct notifier_block *nb, unsigned long event, void *ptr)
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+{
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+	struct net_device *netdev;
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+	struct nfp_app *app;
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+
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+	netdev = netdev_notifier_info_to_dev(ptr);
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+	app = container_of(nb, struct nfp_app, netdev_nb);
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+
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+	/* Handle events common code is interested in */
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+	switch (event) {
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+	case NETDEV_FEAT_CHANGE:
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+		nfp_app_netdev_feat_change(app, netdev);
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+		break;
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+	}
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+
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+	/* Call offload specific handlers */
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+	if (app->type->netdev_event)
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+		return app->type->netdev_event(app, netdev, event, ptr);
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+	return NOTIFY_DONE;
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+}
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+
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+int nfp_app_start(struct nfp_app *app, struct nfp_net *ctrl)
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+{
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+	int err;
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+
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+	app->ctrl = ctrl;
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+
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+	if (app->type->start) {
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+		err = app->type->start(app);
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+		if (err)
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+			return err;
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+	}
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+
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+	app->netdev_nb.notifier_call = nfp_app_netdev_event;
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+	err = register_netdevice_notifier(&app->netdev_nb);
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+	if (err)
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+		goto err_app_stop;
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+
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+	return 0;
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+
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+err_app_stop:
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+	if (app->type->stop)
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+		app->type->stop(app);
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+	return err;
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+}
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+
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+void nfp_app_stop(struct nfp_app *app)
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+{
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+	unregister_netdevice_notifier(&app->netdev_nb);
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+
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+	if (app->type->stop)
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+		app->type->stop(app);
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+}
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+
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 struct nfp_app *nfp_app_alloc(struct nfp_pf *pf, enum nfp_app_id id)
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 {
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 	struct nfp_app *app;