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bonding: add bounds checking for tbl params 

Add bounds checking for params defined with parm tbl.

Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
sfeldma@cumulusnetworks.com 2014-01-03 14:28:18 -08:00 committed by David S. Miller
parent 288db0aafe
commit 3243c47b1a
1 changed files with 51 additions and 28 deletions
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79
drivers/net/bonding/bond_options.c
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@ -19,19 +19,11 @@
#include <linux/reciprocal_div.h>
#include "bonding.h"
static bool bond_mode_is_valid(int mode)
{
int i;
for (i = 0; bond_mode_tbl[i].modename; i++);
return mode >= 0 && mode < i;
}
int bond_option_mode_set(struct bonding *bond, int mode)
{
if (!bond_mode_is_valid(mode)) {
pr_err("invalid mode value %d.\n", mode);
if (bond_parm_tbl_lookup(mode, bond_mode_tbl) < 0) {
pr_err("%s: Ignoring invalid mode value %d.\n",
bond->dev->name, mode);
return -EINVAL;
}
@ -438,11 +430,18 @@ int bond_option_arp_ip_targets_set(struct bonding *bond, __be32 *targets,
int bond_option_arp_validate_set(struct bonding *bond, int arp_validate)
{
if (bond_parm_tbl_lookup(arp_validate, arp_validate_tbl) < 0) {
pr_err("%s: Ignoring invalid arp_validate value %d.\n",
bond->dev->name, arp_validate);
return -EINVAL;
}
if (bond->params.mode != BOND_MODE_ACTIVEBACKUP) {
pr_err("%s: arp_validate only supported in active-backup mode.\n",
bond->dev->name);
return -EINVAL;
}
pr_info("%s: setting arp_validate to %s (%d).\n",
bond->dev->name, arp_validate_tbl[arp_validate].modename,
arp_validate);
@ -460,6 +459,12 @@ int bond_option_arp_validate_set(struct bonding *bond, int arp_validate)
int bond_option_arp_all_targets_set(struct bonding *bond, int arp_all_targets)
{
if (bond_parm_tbl_lookup(arp_all_targets, arp_all_targets_tbl) < 0) {
pr_err("%s: Ignoring invalid arp_all_targets value %d.\n",
bond->dev->name, arp_all_targets);
return -EINVAL;
}
pr_info("%s: setting arp_all_targets to %s (%d).\n",
bond->dev->name, arp_all_targets_tbl[arp_all_targets].modename,
arp_all_targets);
@ -523,6 +528,12 @@ out:
int bond_option_primary_reselect_set(struct bonding *bond, int primary_reselect)
{
if (bond_parm_tbl_lookup(primary_reselect, pri_reselect_tbl) < 0) {
pr_err("%s: Ignoring invalid primary_reselect value %d.\n",
bond->dev->name, primary_reselect);
return -EINVAL;
}
bond->params.primary_reselect = primary_reselect;
pr_info("%s: setting primary_reselect to %s (%d).\n",
bond->dev->name, pri_reselect_tbl[primary_reselect].modename,
@ -539,6 +550,12 @@ int bond_option_primary_reselect_set(struct bonding *bond, int primary_reselect)
int bond_option_fail_over_mac_set(struct bonding *bond, int fail_over_mac)
{
if (bond_parm_tbl_lookup(fail_over_mac, fail_over_mac_tbl) < 0) {
pr_err("%s: Ignoring invalid fail_over_mac value %d.\n",
bond->dev->name, fail_over_mac);
return -EINVAL;
}
if (bond_has_slaves(bond)) {
pr_err("%s: Can't alter fail_over_mac with slaves in bond.\n",
bond->dev->name);
@ -555,6 +572,12 @@ int bond_option_fail_over_mac_set(struct bonding *bond, int fail_over_mac)
int bond_option_xmit_hash_policy_set(struct bonding *bond, int xmit_hash_policy)
{
if (bond_parm_tbl_lookup(xmit_hash_policy, xmit_hashtype_tbl) < 0) {
pr_err("%s: Ignoring invalid xmit_hash_policy value %d.\n",
bond->dev->name, xmit_hash_policy);
return -EINVAL;
}
bond->params.xmit_policy = xmit_hash_policy;
pr_info("%s: setting xmit hash policy to %s (%d).\n",
bond->dev->name,
@ -659,6 +682,12 @@ int bond_option_packets_per_slave_set(struct bonding *bond,
int bond_option_lacp_rate_set(struct bonding *bond, int lacp_rate)
{
if (bond_parm_tbl_lookup(lacp_rate, bond_lacp_tbl) < 0) {
pr_err("%s: Ignoring invalid LACP rate value %d.\n",
bond->dev->name, lacp_rate);
return -EINVAL;
}
if (bond->dev->flags & IFF_UP) {
pr_err("%s: Unable to update LACP rate because interface is up.\n",
bond->dev->name);
@ -671,35 +700,29 @@ int bond_option_lacp_rate_set(struct bonding *bond, int lacp_rate)
return -EPERM;
}
if ((lacp_rate == 1) || (lacp_rate == 0)) {
bond->params.lacp_fast = lacp_rate;
bond_3ad_update_lacp_rate(bond);
pr_info("%s: Setting LACP rate to %s (%d).\n",
bond->dev->name, bond_lacp_tbl[lacp_rate].modename,
lacp_rate);
} else {
pr_err("%s: Ignoring invalid LACP rate value %d.\n",
bond->dev->name, lacp_rate);
return -EINVAL;
}
bond->params.lacp_fast = lacp_rate;
bond_3ad_update_lacp_rate(bond);
pr_info("%s: Setting LACP rate to %s (%d).\n",
bond->dev->name, bond_lacp_tbl[lacp_rate].modename,
lacp_rate);
return 0;
}
int bond_option_ad_select_set(struct bonding *bond, int ad_select)
{
if (bond->dev->flags & IFF_UP) {
pr_err("%s: Unable to update ad_select because interface is up.\n",
bond->dev->name);
return -EPERM;
}
if (bond_parm_tbl_lookup(ad_select, ad_select_tbl) < 0) {
pr_err("%s: Ignoring invalid ad_select value %d.\n",
bond->dev->name, ad_select);
return -EINVAL;
}
if (bond->dev->flags & IFF_UP) {
pr_err("%s: Unable to update ad_select because interface is up.\n",
bond->dev->name);
return -EPERM;
}
bond->params.ad_select = ad_select;
pr_info("%s: Setting ad_select to %s (%d).\n",
bond->dev->name, ad_select_tbl[ad_select].modename,