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.

RETURN
       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 4.8.                 January 2017                        WIMAX_MSG_ALLOC(9)