kernel: require admin permissions for swconfig set operations

[openwrt/openwrt.git] / target / linux / generic / files / drivers / net / phy / swconfig.c

diff --git a/target/linux/generic/files/drivers/net/phy/swconfig.c b/target/linux/generic/files/drivers/net/phy/swconfig.c
index 4bfe64fbd0dc62a3007802eaeb1b4fef8e6cc956..c70ca74cadde948bd330543cdf9811ce130899b1 100644 (file)
--- a/target/linux/generic/files/drivers/net/phy/swconfig.c
+++ b/target/linux/generic/files/drivers/net/phy/swconfig.c
@@ -1,7 +1,7 @@
 /*
  * swconfig.c: Switch configuration API
  *
- * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2008 Felix Fietkau <nbd@nbd.name>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -25,12 +25,13 @@
 #include <linux/switch.h>
 #include <linux/of.h>
 #include <linux/version.h>
+#include <uapi/linux/mii.h>
 
 #define SWCONFIG_DEVNAME       "switch%d"
 
 #include "swconfig_leds.c"
 
-MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
+MODULE_AUTHOR("Felix Fietkau <nbd@nbd.name>");
 MODULE_LICENSE("GPL");
 
 static int swdev_id;
@@ -634,6 +635,9 @@ swconfig_set_attr(struct sk_buff *skb, struct genl_info *info)
        struct switch_val val;
        int err = -EINVAL;
 
+       if (!capable(CAP_NET_ADMIN))
+               return -EPERM;
+
        dev = swconfig_get_dev(info);
        if (!dev)
                return -EINVAL;
@@ -1021,16 +1025,19 @@ static struct genl_ops swconfig_ops[] = {
        },
        {
                .cmd = SWITCH_CMD_SET_GLOBAL,
+               .flags = GENL_ADMIN_PERM,
                .doit = swconfig_set_attr,
                .policy = switch_policy,
        },
        {
                .cmd = SWITCH_CMD_SET_VLAN,
+               .flags = GENL_ADMIN_PERM,
                .doit = swconfig_set_attr,
                .policy = switch_policy,
        },
        {
                .cmd = SWITCH_CMD_SET_PORT,
+               .flags = GENL_ADMIN_PERM,
                .doit = swconfig_set_attr,
                .policy = switch_policy,
        },
@@ -1168,6 +1175,41 @@ unregister_switch(struct switch_dev *dev)
 }
 EXPORT_SYMBOL_GPL(unregister_switch);
 
+int
+switch_generic_set_link(struct switch_dev *dev, int port,
+                       struct switch_port_link *link)
+{
+       if (WARN_ON(!dev->ops->phy_write16))
+               return -ENOTSUPP;
+
+       /* Generic implementation */
+       if (link->aneg) {
+               dev->ops->phy_write16(dev, port, MII_BMCR, 0x0000);
+               dev->ops->phy_write16(dev, port, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
+       } else {
+               u16 bmcr = 0;
+
+               if (link->duplex)
+                       bmcr |= BMCR_FULLDPLX;
+
+               switch (link->speed) {
+               case SWITCH_PORT_SPEED_10:
+                       break;
+               case SWITCH_PORT_SPEED_100:
+                       bmcr |= BMCR_SPEED100;
+                       break;
+               case SWITCH_PORT_SPEED_1000:
+                       bmcr |= BMCR_SPEED1000;
+                       break;
+               default:
+                       return -ENOTSUPP;
+               }
+
+               dev->ops->phy_write16(dev, port, MII_BMCR, bmcr);
+       }
+
+       return 0;
+}
 
 static int __init
 swconfig_init(void)