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wimax_msg_alloc(9) [suse man page]

WIMAX_MSG_ALLOC(9)						 Linux Networking						WIMAX_MSG_ALLOC(9)

NAME

       wimax_msg_alloc - Create a new skb for sending a message to userspace

SYNOPSIS

       struct sk_buff * wimax_msg_alloc(struct wimax_dev * wimax_dev, const char * pipe_name, const void * msg, size_t size, gfp_t gfp_flags);

ARGUMENTS

       wimax_dev
	   WiMAX device descriptor

       pipe_name
	   "named pipe" the message will be sent to

       msg
	   pointer to the message data to send

       size
	   size of the message to send (in bytes), including the header.

       gfp_flags
	   flags for memory allocation.

RETURNS

       0 if ok, negative errno code on error

DESCRIPTION

       Allocates an skb that will contain the message to send to user space over the messaging pipe and initializes it, copying the payload.

       Once this call is done, you can deliver it with wimax_msg_send.

IMPORTANT

       Don't use skb_push/skb_pull/skb_reserve on the skb, as wimax_msg_send depends on skb->data being placed at the beginning of the user
       message.

       Unlike other WiMAX stack calls, this call can be used way early, even before wimax_dev_add is called, as long as the wimax_dev->net_dev
       pointer is set to point to a proper net_dev. This is so that drivers can use it early in case they need to send stuff around or communicate
       with user space.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010							WIMAX_MSG_ALLOC(9)

Check Out this Related Man Page

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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