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authorJohannes Berg <johannes.berg@intel.com>2012-04-02 10:51:55 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-05-07 08:56:34 -0700
commit20eae41274bb811063f95a2dde0b3dda88a3d5a0 (patch)
tree04c5ba230f77adb3e62056901e6962cb6e7a2f9a
parente469853fcb813790b1d1152122d83a0f2513fc72 (diff)
nl80211: ensure interface is up in various APIs
commit 2b5f8b0b44e17e625cfba1e7b88db44f4dcc0441 upstream. [backported by Ben Greear] 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. 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> Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--net/wireless/nl80211.c29
1 files changed, 17 insertions, 12 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 0c2b8080547f..f310a0d90c32 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1181,6 +1181,11 @@ 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) {
@@ -5432,7 +5437,7 @@ 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,
},
{
@@ -5464,7 +5469,7 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_addset_beacon,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -5472,7 +5477,7 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_addset_beacon,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -5496,7 +5501,7 @@ 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,
},
{
@@ -5512,7 +5517,7 @@ 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,
},
{
@@ -5545,7 +5550,7 @@ 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,
},
{
@@ -5553,7 +5558,7 @@ 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,
},
{
@@ -5579,7 +5584,7 @@ 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,
},
{
@@ -5711,7 +5716,7 @@ 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,
},
{
@@ -5719,7 +5724,7 @@ 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,
},
{
@@ -5727,7 +5732,7 @@ 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,
},
{
@@ -5815,7 +5820,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_set_wds_peer,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{