OpenCores
URL https://opencores.org/ocsvn/test_project/test_project/trunk

Subversion Repositories test_project

[/] [test_project/] [trunk/] [linux_sd_driver/] [net/] [ipv6/] [xfrm6_state.c] - Blame information for rev 62

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 62 marcus.erl 
/*
2 
 * xfrm6_state.c: based on xfrm4_state.c
3 
 *
4 
 * Authors:
5 
 *      Mitsuru KANDA @USAGI
6 
 *      Kazunori MIYAZAWA @USAGI
7 
 *      Kunihiro Ishiguro <kunihiro@ipinfusion.com>
8 
 *              IPv6 support
9 
 *      YOSHIFUJI Hideaki @USAGI
10 
 *              Split up af-specific portion
11 
 *
12 
 */
13 
 
14 
#include <net/xfrm.h>
15 
#include <linux/pfkeyv2.h>
16 
#include <linux/ipsec.h>
17 
#include <net/ipv6.h>
18 
#include <net/addrconf.h>
19 
 
20 
static struct xfrm_state_afinfo xfrm6_state_afinfo;
21 
 
22 
static void
23 
__xfrm6_init_tempsel(struct xfrm_state *x, struct flowi *fl,
24 
                     struct xfrm_tmpl *tmpl,
25 
                     xfrm_address_t *daddr, xfrm_address_t *saddr)
26 
{
27 
        /* Initialize temporary selector matching only
28 
         * to current session. */
29 
        ipv6_addr_copy((struct in6_addr *)&x->sel.daddr, &fl->fl6_dst);
30 
        ipv6_addr_copy((struct in6_addr *)&x->sel.saddr, &fl->fl6_src);
31 
        x->sel.dport = xfrm_flowi_dport(fl);
32 
        x->sel.dport_mask = htons(0xffff);
33 
        x->sel.sport = xfrm_flowi_sport(fl);
34 
        x->sel.sport_mask = htons(0xffff);
35 
        x->sel.prefixlen_d = 128;
36 
        x->sel.prefixlen_s = 128;
37 
        x->sel.proto = fl->proto;
38 
        x->sel.ifindex = fl->oif;
39 
        x->id = tmpl->id;
40 
        if (ipv6_addr_any((struct in6_addr*)&x->id.daddr))
41 
                memcpy(&x->id.daddr, daddr, sizeof(x->sel.daddr));
42 
        memcpy(&x->props.saddr, &tmpl->saddr, sizeof(x->props.saddr));
43 
        if (ipv6_addr_any((struct in6_addr*)&x->props.saddr))
44 
                memcpy(&x->props.saddr, saddr, sizeof(x->props.saddr));
45 
        x->props.mode = tmpl->mode;
46 
        x->props.reqid = tmpl->reqid;
47 
        x->props.family = AF_INET6;
48 
}
49 
 
50 
static int
51 
__xfrm6_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n)
52 
{
53 
        int i;
54 
        int j = 0;
55 
 
56 
        /* Rule 1: select IPsec transport except AH */
57 
        for (i = 0; i < n; i++) {
58 
                if (src[i]->props.mode == XFRM_MODE_TRANSPORT &&
59 
                    src[i]->id.proto != IPPROTO_AH) {
60 
                        dst[j++] = src[i];
61 
                        src[i] = NULL;
62 
                }
63 
        }
64 
        if (j == n)
65 
                goto end;
66 
 
67 
        /* Rule 2: select MIPv6 RO or inbound trigger */
68 
#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
69 
        for (i = 0; i < n; i++) {
70 
                if (src[i] &&
71 
                    (src[i]->props.mode == XFRM_MODE_ROUTEOPTIMIZATION ||
72 
                     src[i]->props.mode == XFRM_MODE_IN_TRIGGER)) {
73 
                        dst[j++] = src[i];
74 
                        src[i] = NULL;
75 
                }
76 
        }
77 
        if (j == n)
78 
                goto end;
79 
#endif
80 
 
81 
        /* Rule 3: select IPsec transport AH */
82 
        for (i = 0; i < n; i++) {
83 
                if (src[i] &&
84 
                    src[i]->props.mode == XFRM_MODE_TRANSPORT &&
85 
                    src[i]->id.proto == IPPROTO_AH) {
86 
                        dst[j++] = src[i];
87 
                        src[i] = NULL;
88 
                }
89 
        }
90 
        if (j == n)
91 
                goto end;
92 
 
93 
        /* Rule 4: select IPsec tunnel */
94 
        for (i = 0; i < n; i++) {
95 
                if (src[i] &&
96 
                    (src[i]->props.mode == XFRM_MODE_TUNNEL ||
97 
                     src[i]->props.mode == XFRM_MODE_BEET)) {
98 
                        dst[j++] = src[i];
99 
                        src[i] = NULL;
100 
                }
101 
        }
102 
        if (likely(j == n))
103 
                goto end;
104 
 
105 
        /* Final rule */
106 
        for (i = 0; i < n; i++) {
107 
                if (src[i]) {
108 
                        dst[j++] = src[i];
109 
                        src[i] = NULL;
110 
                }
111 
        }
112 
 
113 
 end:
114 
        return 0;
115 
}
116 
 
117 
static int
118 
__xfrm6_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n)
119 
{
120 
        int i;
121 
        int j = 0;
122 
 
123 
        /* Rule 1: select IPsec transport */
124 
        for (i = 0; i < n; i++) {
125 
                if (src[i]->mode == XFRM_MODE_TRANSPORT) {
126 
                        dst[j++] = src[i];
127 
                        src[i] = NULL;
128 
                }
129 
        }
130 
        if (j == n)
131 
                goto end;
132 
 
133 
        /* Rule 2: select MIPv6 RO or inbound trigger */
134 
#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
135 
        for (i = 0; i < n; i++) {
136 
                if (src[i] &&
137 
                    (src[i]->mode == XFRM_MODE_ROUTEOPTIMIZATION ||
138 
                     src[i]->mode == XFRM_MODE_IN_TRIGGER)) {
139 
                        dst[j++] = src[i];
140 
                        src[i] = NULL;
141 
                }
142 
        }
143 
        if (j == n)
144 
                goto end;
145 
#endif
146 
 
147 
        /* Rule 3: select IPsec tunnel */
148 
        for (i = 0; i < n; i++) {
149 
                if (src[i] &&
150 
                    (src[i]->mode == XFRM_MODE_TUNNEL ||
151 
                     src[i]->mode == XFRM_MODE_BEET)) {
152 
                        dst[j++] = src[i];
153 
                        src[i] = NULL;
154 
                }
155 
        }
156 
        if (likely(j == n))
157 
                goto end;
158 
 
159 
        /* Final rule */
160 
        for (i = 0; i < n; i++) {
161 
                if (src[i]) {
162 
                        dst[j++] = src[i];
163 
                        src[i] = NULL;
164 
                }
165 
        }
166 
 
167 
 end:
168 
        return 0;
169 
}
170 
 
171 
static struct xfrm_state_afinfo xfrm6_state_afinfo = {
172 
        .family                 = AF_INET6,
173 
        .owner                  = THIS_MODULE,
174 
        .init_tempsel           = __xfrm6_init_tempsel,
175 
        .tmpl_sort              = __xfrm6_tmpl_sort,
176 
        .state_sort             = __xfrm6_state_sort,
177 
        .output                 = xfrm6_output,
178 
};
179 
 
180 
void __init xfrm6_state_init(void)
181 
{
182 
        xfrm_state_register_afinfo(&xfrm6_state_afinfo);
183 
}
184 
 
185 
void xfrm6_state_fini(void)
186 
{
187 
        xfrm_state_unregister_afinfo(&xfrm6_state_afinfo);
188 
}
189 
 

powered by: WebSVN 2.1.0

© copyright 1999-2025 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.