linux-imx

/*

 * Copyright (C)2002 USAGI/WIDE Project

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, see <http://www.gnu.org/licenses/>.

 *

 * Authors

 *

 *  Mitsuru KANDA @USAGI       : IPv6 Support

 *  Kazunori MIYAZAWA @USAGI   :

 *  Kunihiro Ishiguro <kunihiro@ipinfusion.com>

 *

 *  This file is derived from net/ipv4/esp.c

 */

​

#define pr_fmt(fmt) "IPv6: " fmt

​

#include <crypto/aead.h>

#include <crypto/authenc.h>

#include <linux/err.h>

#include <linux/module.h>

#include <net/ip.h>

#include <net/xfrm.h>

#include <net/esp.h>

#include <linux/scatterlist.h>

#include <linux/kernel.h>

#include <linux/pfkeyv2.h>

#include <linux/random.h>

#include <linux/slab.h>

#include <linux/spinlock.h>

#include <net/ip6_route.h>

#include <net/icmp.h>

#include <net/ipv6.h>

#include <net/protocol.h>

#include <linux/icmpv6.h>

​

#include <linux/highmem.h>

​

struct esp_skb_cb {

    struct xfrm_skb_cb xfrm;

    void *tmp;

};

​

#define ESP_SKB_CB(__skb) ((struct esp_skb_cb *)&((__skb)->cb[0]))

​

static u32 esp6_get_mtu(struct xfrm_state *x, int mtu);

​

/*

 * Allocate an AEAD request structure with extra space for SG and IV.

 *

 * For alignment considerations the upper 32 bits of the sequence number are

 * placed at the front, if present. Followed by the IV, the request and finally

 * the SG list.