diff options
Diffstat (limited to 'drivers/net/bonding/bond_options.c')
| -rw-r--r-- | drivers/net/bonding/bond_options.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c index 60d700139811..05a402c99bff 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -300,6 +300,13 @@ static struct bond_option bond_opts[] = { .values = bond_lp_interval_tbl, .set = bond_option_lp_interval_set }, + [BOND_OPT_SLAVES] = { + .id = BOND_OPT_SLAVES, + .name = "slaves", + .desc = "Slave membership management", + .flags = BOND_OPTFLAG_RAWVAL, + .set = bond_option_slaves_set + }, { } }; @@ -1221,3 +1228,49 @@ err_no_cmd: goto out; } + +int bond_option_slaves_set(struct bonding *bond, struct bond_opt_value *newval) +{ + char command[IFNAMSIZ + 1] = { 0, }; + struct net_device *dev; + char *ifname; + int ret; + + sscanf(newval->string, "%16s", command); /* IFNAMSIZ*/ + ifname = command + 1; + if ((strlen(command) <= 1) || + !dev_valid_name(ifname)) + goto err_no_cmd; + + dev = __dev_get_by_name(dev_net(bond->dev), ifname); + if (!dev) { + pr_info("%s: Interface %s does not exist!\n", + bond->dev->name, ifname); + ret = -ENODEV; + goto out; + } + + switch (command[0]) { + case '+': + pr_info("%s: Adding slave %s.\n", bond->dev->name, dev->name); + ret = bond_enslave(bond->dev, dev); + break; + + case '-': + pr_info("%s: Removing slave %s.\n", bond->dev->name, dev->name); + ret = bond_release(bond->dev, dev); + break; + + default: + goto err_no_cmd; + } + +out: + return ret; + +err_no_cmd: + pr_err("no command found in slaves file for bond %s. Use +ifname or -ifname.\n", + bond->dev->name); + ret = -EPERM; + goto out; +} |