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Commit 4b681c82 authored by Vadim Kochan's avatar Vadim Kochan Committed by Johannes Berg
Browse files

nl80211: Allow set network namespace by fd 



Added new NL80211_ATTR_NETNS_FD which allows to
set namespace via nl80211 by fd.

Signed-off-by: default avatarVadim Kochan <vadim4j@gmail.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent fa7e1fbc

include/uapi/linux/nl80211.h

+2 −0
Original line number Diff line number Diff line
@@ -2098,6 +2098,8 @@ enum nl80211_attrs { 


	NL80211_ATTR_SURVEY_RADIO_STATS,



	NL80211_ATTR_NETNS_FD,



	/* add attributes here, update the policy in nl80211.c */



	__NL80211_ATTR_AFTER_LAST,

net/core/net_namespace.c

+1 −0
Original line number Diff line number Diff line
@@ -361,6 +361,7 @@ struct net *get_net_ns_by_fd(int fd) 
	return ERR_PTR(-EINVAL);

}

#endif

EXPORT_SYMBOL_GPL(get_net_ns_by_fd);



struct net *get_net_ns_by_pid(pid_t pid)

{

net/wireless/nl80211.c

+11 −5
Original line number Diff line number Diff line
@@ -397,6 +397,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 
	[NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },

	[NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },

	[NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },

	[NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },

};



/* policy for the key attributes */
@@ -7762,14 +7763,19 @@ static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 
	struct cfg80211_registered_device *rdev = info->user_ptr[0];

	struct net *net;

	int err;

	u32 pid;



	if (!info->attrs[NL80211_ATTR_PID])

		return -EINVAL;



	pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);

	if (info->attrs[NL80211_ATTR_PID]) {

		u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);



		net = get_net_ns_by_pid(pid);

	} else if (info->attrs[NL80211_ATTR_NETNS_FD]) {

		u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);



		net = get_net_ns_by_fd(fd);

	} else {

		return -EINVAL;

	}



	if (IS_ERR(net))

		return PTR_ERR(net);