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/* BEGIN_ICS_COPYRIGHT2 ****************************************

Copyright (c) 2015-2017, Intel Corporation

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of Intel Corporation nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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** END_ICS_COPYRIGHT2   ****************************************/

/* [ICS VERSION STRING: unknown] */

#ifndef _OMGT_OOB_NET_BLOB_H_
#define _OMGT_OOB_NET_BLOB_H_

/*
 * A net_blob encapsulates the raw data of a message along with state
 * information needed to retrieve the message.
 *
 * On send, we pack a magic#,len in front of the user data.
 * On recv, we read magic#,len into magic[] then put user data into data.
 * Be careful about this difference!
 */
struct net_blob {
	size_t len; /* length of what data points to */
	uint8_t *data; /* ptr to user data (recv) or magic#,len,userdata (send) */
	ssize_t bytes_left; /* # bytes of this msg left to send/recv */
	uint8_t *cur_ptr; /* ptr into buffer where next byte sent/recvd will go */
	uint32_t magic[2]; /* buffer for reading magic#, message len */
	struct net_blob *next; /* next blob in the queue */
};

/* Function prototypes */
struct net_blob *omgt_oob_new_net_blob(size_t len);
void omgt_oob_free_net_buf(char *buf);
void omgt_oob_free_net_blob(struct net_blob *blob);
void omgt_oob_adjust_blob_cur_ptr(struct net_blob *blob, int bytes_sent);

#endif /* _OMGT_OOB_NET_BLOB_H_ */