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kfree_skb(9) [centos man page]

KFREE_SKB(9)							 Linux Networking						      KFREE_SKB(9)

NAME
kfree_skb - free an sk_buff SYNOPSIS
void kfree_skb(struct sk_buff * skb); ARGUMENTS
skb buffer to free DESCRIPTION
Drop a reference to the buffer and free it if the usage count has hit zero. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 KFREE_SKB(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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