2017-12-19 15:49:03 +00:00
|
|
|
/* SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
|
* Copyright(c) 2017 Intel Corporation
|
2017-10-07 14:56:40 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef _GSO_TCP4_H_
|
|
|
|
|
#define _GSO_TCP4_H_
|
|
|
|
|
|
|
|
|
|
#include <stdint.h>
|
|
|
|
|
#include <rte_mbuf.h>
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Segment an IPv4/TCP packet. This function doesn't check if the input
|
|
|
|
|
* packet has correct checksums, and doesn't update checksums for output
|
|
|
|
|
* GSO segments. Furthermore, it doesn't process IP fragment packets.
|
|
|
|
|
*
|
|
|
|
|
* @param pkt
|
|
|
|
|
* The packet mbuf to segment.
|
|
|
|
|
* @param gso_size
|
|
|
|
|
* The max length of a GSO segment, measured in bytes.
|
|
|
|
|
* @param ipid_delta
|
|
|
|
|
* The increasing unit of IP ids.
|
|
|
|
|
* @param direct_pool
|
|
|
|
|
* MBUF pool used for allocating direct buffers for output segments.
|
|
|
|
|
* @param indirect_pool
|
|
|
|
|
* MBUF pool used for allocating indirect buffers for output segments.
|
|
|
|
|
* @param pkts_out
|
|
|
|
|
* Pointer array used to store the MBUF addresses of output GSO
|
|
|
|
|
* segments, when the function succeeds. If the memory space in
|
|
|
|
|
* pkts_out is insufficient, it fails and returns -EINVAL.
|
|
|
|
|
* @param nb_pkts_out
|
|
|
|
|
* The max number of items that 'pkts_out' can keep.
|
|
|
|
|
*
|
|
|
|
|
* @return
|
|
|
|
|
* - The number of GSO segments filled in pkts_out on success.
|
|
|
|
|
* - Return -ENOMEM if run out of memory in MBUF pools.
|
|
|
|
|
* - Return -EINVAL for invalid parameters.
|
|
|
|
|
*/
|
|
|
|
|
int gso_tcp4_segment(struct rte_mbuf *pkt,
|
|
|
|
|
uint16_t gso_size,
|
|
|
|
|
uint8_t ip_delta,
|
|
|
|
|
struct rte_mempool *direct_pool,
|
|
|
|
|
struct rte_mempool *indirect_pool,
|
|
|
|
|
struct rte_mbuf **pkts_out,
|
|
|
|
|
uint16_t nb_pkts_out);
|
|
|
|
|
#endif
|
