CFG80211_TESTMODE_AL(9) Test mode CFG80211_TESTMODE_AL(9)NAMEcfg80211_testmode_alloc_reply_skb - allocate testmode reply
struct sk_buff *
cfg80211_testmode_alloc_reply_skb(struct wiphy * wiphy,
an upper bound of the length of the data that will be put into the
This function allocates and pre-fills an skb for a reply to the
testmode command. Since it is intended for a reply, calling it outside
of the testmode_cmd operation is invalid.
The returned skb (or NULL if any errors happen) is pre-filled with the
wiphy index and set up in a way that any data that is put into the skb
(with skb_put, nla_put or similar) will end up being within the
NL80211_ATTR_TESTDATA attribute, so all that needs to be done with the
skb is adding data for the corresponding userspace tool which can then
read that data out of the testdata attribute. You must not modify the
skb in any other way.
When done, call cfg80211_testmode_reply with the skb and return its
error code as the result of the testmode_cmd operation.
Johannes Berg <firstname.lastname@example.org>
COPYRIGHTKernel Hackers Manual 3.8. June 2014 CFG80211_TESTMODE_AL(9)