158 lines
3.8 KiB
C
Executable file
158 lines
3.8 KiB
C
Executable file
/*
|
|
* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
|
|
* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the
|
|
* OpenIB.org BSD license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or
|
|
* without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#include "rxe.h"
|
|
#include "rxe_net.h"
|
|
|
|
/* Copy argument and remove trailing CR. Return the new length. */
|
|
static int sanitize_arg(const char *val, char *intf, int intf_len)
|
|
{
|
|
int len;
|
|
|
|
if (!val)
|
|
return 0;
|
|
|
|
/* Remove newline. */
|
|
for (len = 0; len < intf_len - 1 && val[len] && val[len] != '\n'; len++)
|
|
intf[len] = val[len];
|
|
intf[len] = 0;
|
|
|
|
if (len == 0 || (val[len] != 0 && val[len] != '\n'))
|
|
return 0;
|
|
|
|
return len;
|
|
}
|
|
|
|
static void rxe_set_port_state(struct net_device *ndev)
|
|
{
|
|
struct rxe_dev *rxe = net_to_rxe(ndev);
|
|
bool is_up = netif_running(ndev) && netif_carrier_ok(ndev);
|
|
|
|
if (!rxe)
|
|
goto out;
|
|
|
|
if (is_up)
|
|
rxe_port_up(rxe);
|
|
else
|
|
rxe_port_down(rxe); /* down for unknown state */
|
|
out:
|
|
return;
|
|
}
|
|
|
|
static int rxe_param_set_add(const char *val, const struct kernel_param *kp)
|
|
{
|
|
int len;
|
|
int err = 0;
|
|
char intf[32];
|
|
struct net_device *ndev = NULL;
|
|
struct rxe_dev *rxe;
|
|
|
|
len = sanitize_arg(val, intf, sizeof(intf));
|
|
if (!len) {
|
|
pr_err("add: invalid interface name\n");
|
|
err = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
ndev = dev_get_by_name(&init_net, intf);
|
|
if (!ndev) {
|
|
pr_err("interface %s not found\n", intf);
|
|
err = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
if (net_to_rxe(ndev)) {
|
|
pr_err("already configured on %s\n", intf);
|
|
err = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
rxe = rxe_net_add(ndev);
|
|
if (!rxe) {
|
|
pr_err("failed to add %s\n", intf);
|
|
err = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
rxe_set_port_state(ndev);
|
|
pr_info("added %s to %s\n", rxe->ib_dev.name, intf);
|
|
err:
|
|
if (ndev)
|
|
dev_put(ndev);
|
|
return err;
|
|
}
|
|
|
|
static int rxe_param_set_remove(const char *val, const struct kernel_param *kp)
|
|
{
|
|
int len;
|
|
char intf[32];
|
|
struct rxe_dev *rxe;
|
|
|
|
len = sanitize_arg(val, intf, sizeof(intf));
|
|
if (!len) {
|
|
pr_err("add: invalid interface name\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (strncmp("all", intf, len) == 0) {
|
|
pr_info("rxe_sys: remove all");
|
|
rxe_remove_all();
|
|
return 0;
|
|
}
|
|
|
|
rxe = get_rxe_by_name(intf);
|
|
|
|
if (!rxe) {
|
|
pr_err("not configured on %s\n", intf);
|
|
return -EINVAL;
|
|
}
|
|
|
|
list_del(&rxe->list);
|
|
rxe_remove(rxe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct kernel_param_ops rxe_add_ops = {
|
|
.set = rxe_param_set_add,
|
|
};
|
|
|
|
static const struct kernel_param_ops rxe_remove_ops = {
|
|
.set = rxe_param_set_remove,
|
|
};
|
|
|
|
module_param_cb(add, &rxe_add_ops, NULL, 0200);
|
|
MODULE_PARM_DESC(add, "Create RXE device over network interface");
|
|
module_param_cb(remove, &rxe_remove_ops, NULL, 0200);
|
|
MODULE_PARM_DESC(remove, "Remove RXE device over network interface");
|