SKB_TRY_COALESCE(9) Linux Networking SKB_TRY_COALESCE(9)NAME
skb_try_coalesce - try to merge skb to prior one
SYNOPSIS
bool skb_try_coalesce(struct sk_buff * to, struct sk_buff * from, bool * fragstolen, int * delta_truesize);
ARGUMENTS
to
prior buffer
from
buffer to add
fragstolen
pointer to boolean
delta_truesize
how much more was allocated than was requested
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SKB_TRY_COALESCE(9)
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CFG80211_TESTMODE_AL(9) Test mode CFG80211_TESTMODE_AL(9)NAME
cfg80211_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.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 CFG80211_TESTMODE_AL(9)
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