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nl80211: ensure interface is up in various APIs

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The nl80211 handling code should ensure as much as
it can that the interface is in a valid state, it
can certainly ensure the interface is running.

Not doing so can cause calls through mac80211 into
the driver that result in warnings and unspecified
behaviour in the driver.

Cc: stable@vger.kernel.org
Reported-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2012-04-02 10:51:55 +02:00 committed by John W. Linville
parent 3f9768a5d2
commit 2b5f8b0b44
1 changed files with 18 additions and 13 deletions
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31
net/wireless/nl80211.c
View file

@ -1294,6 +1294,11 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
goto bad_res;
}
if (!netif_running(netdev)) {
result = -ENETDOWN;
goto bad_res;
}
nla_for_each_nested(nl_txq_params,
info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
rem_txq_params) {
@ -6384,7 +6389,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_get_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6416,7 +6421,7 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_set_beacon,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6424,7 +6429,7 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_start_ap,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6432,7 +6437,7 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_stop_ap,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6448,7 +6453,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_set_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6464,7 +6469,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_del_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6497,7 +6502,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_del_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6505,7 +6510,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_set_bss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6531,7 +6536,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_get_mesh_config,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6664,7 +6669,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_setdel_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6672,7 +6677,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_setdel_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6680,7 +6685,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_flush_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@ -6840,7 +6845,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_probe_client,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{