2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37 /* Copy argument and remove trailing CR. Return the new length. */
38 static int sanitize_arg(const char *val, char *intf, int intf_len)
46 for (len = 0; len < intf_len - 1 && val[len] && val[len] != '\n'; len++)
50 if (len == 0 || (val[len] != 0 && val[len] != '\n'))
56 static void rxe_set_port_state(struct net_device *ndev)
58 struct rxe_dev *rxe = net_to_rxe(ndev);
59 bool is_up = netif_running(ndev) && netif_carrier_ok(ndev);
67 rxe_port_down(rxe); /* down for unknown state */
72 static int rxe_param_set_add(const char *val, const struct kernel_param *kp)
77 struct net_device *ndev = NULL;
80 len = sanitize_arg(val, intf, sizeof(intf));
82 pr_err("add: invalid interface name\n");
87 ndev = dev_get_by_name(&init_net, intf);
89 pr_err("interface %s not found\n", intf);
94 if (net_to_rxe(ndev)) {
95 pr_err("already configured on %s\n", intf);
100 rxe = rxe_net_add(ndev);
102 pr_err("failed to add %s\n", intf);
107 rxe_set_port_state(ndev);
108 pr_info("added %s to %s\n", rxe->ib_dev.name, intf);
115 static int rxe_param_set_remove(const char *val, const struct kernel_param *kp)
121 len = sanitize_arg(val, intf, sizeof(intf));
123 pr_err("add: invalid interface name\n");
127 if (strncmp("all", intf, len) == 0) {
128 pr_info("rxe_sys: remove all");
133 rxe = get_rxe_by_name(intf);
136 pr_err("not configured on %s\n", intf);
140 list_del(&rxe->list);
146 static const struct kernel_param_ops rxe_add_ops = {
147 .set = rxe_param_set_add,
150 static const struct kernel_param_ops rxe_remove_ops = {
151 .set = rxe_param_set_remove,
154 module_param_cb(add, &rxe_add_ops, NULL, 0200);
155 MODULE_PARM_DESC(add, "Create RXE device over network interface");
156 module_param_cb(remove, &rxe_remove_ops, NULL, 0200);
157 MODULE_PARM_DESC(remove, "Remove RXE device over network interface");