linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * xfrm6_state.c: based on xfrm4_state.c

 *

 * Authors:

 *  Mitsuru KANDA @USAGI

 *  Kazunori MIYAZAWA @USAGI

 *  Kunihiro Ishiguro <kunihiro@ipinfusion.com>

 *      IPv6 support

 *  YOSHIFUJI Hideaki @USAGI

 *      Split up af-specific portion

 *

 */

​

#include <net/xfrm.h>

#include <linux/pfkeyv2.h>

#include <linux/ipsec.h>

#include <linux/netfilter_ipv6.h>

#include <linux/export.h>

#include <net/dsfield.h>

#include <net/ipv6.h>

#include <net/addrconf.h>

​

static void

__xfrm6_init_tempsel(struct xfrm_selector *sel, const struct flowi *fl)

{

    const struct flowi6 *fl6 = &fl->u.ip6;

​

    /* Initialize temporary selector matching only

     * to current session. */

    *(struct in6_addr *)&sel->daddr = fl6->daddr;

    *(struct in6_addr *)&sel->saddr = fl6->saddr;

    sel->dport = xfrm_flowi_dport(fl, &fl6->uli);

    sel->dport_mask = htons(0xffff);

    sel->sport = xfrm_flowi_sport(fl, &fl6->uli);

    sel->sport_mask = htons(0xffff);

    sel->family = AF_INET6;

    sel->prefixlen_d = 128;

    sel->prefixlen_s = 128;

    sel->proto = fl6->flowi6_proto;

    sel->ifindex = fl6->flowi6_oif;

}

​

static void

xfrm6_init_temprop(struct xfrm_state *x, const struct xfrm_tmpl *tmpl,

           const xfrm_address_t *daddr, const xfrm_address_t *saddr)

{

    x->id = tmpl->id;

    if (ipv6_addr_any((struct in6_addr *)&x->id.daddr))

        memcpy(&x->id.daddr, daddr, sizeof(x->sel.daddr));

    memcpy(&x->props.saddr, &tmpl->saddr, sizeof(x->props.saddr));

    if (ipv6_addr_any((struct in6_addr *)&x->props.saddr))

        memcpy(&x->props.saddr, saddr, sizeof(x->props.saddr));

    x->props.mode = tmpl->mode;

    x->props.reqid = tmpl->reqid;

    x->props.family = AF_INET6;

}

​

/* distribution counting sort function for xfrm_state and xfrm_tmpl */

static int

__xfrm6_sort(void **dst, void **src, int n, int (*cmp)(void *p), int maxclass)

{

    int count[XFRM_MAX_DEPTH] = { };