CFG80211_TESTMODE_AL(9) Test mode CFG80211_TESTMODE_AL(9)NAMEcfg80211_testmode_alloc_reply_skb - allocate testmode reply
SYNOPSIS
struct sk_buff *
cfg80211_testmode_alloc_reply_skb(struct wiphy * wiphy,
int approxlen);
ARGUMENTS
wiphy
the wiphy
approxlen
an upper bound of the length of the data that will be put into the
skb
DESCRIPTION
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 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.
RETURN
An allocated and pre-filled skb. NULL if any errors happen.
AUTHOR
Johannes Berg <johannes@sipsolutions.net>
Author.
COPYRIGHTKernel Hackers Manual 3.11 November 2013 CFG80211_TESTMODE_AL(9)
