72be35fee6
Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* drivers/net/bond/bond_options.c - bonding options
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* Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/errno.h>
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#include <linux/if.h>
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#include "bonding.h"
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static bool bond_mode_is_valid(int mode)
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{
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int i;
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for (i = 0; bond_mode_tbl[i].modename; i++);
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return mode >= 0 && mode < i;
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}
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int bond_option_mode_set(struct bonding *bond, int mode)
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{
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if (!bond_mode_is_valid(mode)) {
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pr_err("invalid mode value %d.\n", mode);
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return -EINVAL;
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}
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if (bond->dev->flags & IFF_UP) {
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pr_err("%s: unable to update mode because interface is up.\n",
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bond->dev->name);
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return -EPERM;
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}
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if (bond_has_slaves(bond)) {
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pr_err("%s: unable to update mode because bond has slaves.\n",
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bond->dev->name);
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return -EPERM;
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}
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if (BOND_MODE_IS_LB(mode) && bond->params.arp_interval) {
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pr_err("%s: %s mode is incompatible with arp monitoring.\n",
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bond->dev->name, bond_mode_tbl[mode].modename);
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return -EINVAL;
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}
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/* don't cache arp_validate between modes */
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bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
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bond->params.mode = mode;
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return 0;
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}
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