1 /* 2 * xfrm4_state.c 3 * 4 * Changes: 5 * YOSHIFUJI Hideaki @USAGI 6 * Split up af-specific portion 7 * 8 */ 9 10 #include <net/ip.h> 11 #include <net/xfrm.h> 12 #include <linux/pfkeyv2.h> 13 #include <linux/ipsec.h> 14 15 static struct xfrm_state_afinfo xfrm4_state_afinfo; 16 17 static int xfrm4_init_flags(struct xfrm_state *x) 18 { 19 if (ipv4_config.no_pmtu_disc) 20 x->props.flags |= XFRM_STATE_NOPMTUDISC; 21 return 0; 22 } 23 24 static void 25 __xfrm4_init_tempsel(struct xfrm_state *x, struct flowi *fl, 26 struct xfrm_tmpl *tmpl, 27 xfrm_address_t *daddr, xfrm_address_t *saddr) 28 { 29 x->sel.daddr.a4 = fl->fl4_dst; 30 x->sel.saddr.a4 = fl->fl4_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 = 32; 36 x->sel.prefixlen_s = 32; 37 x->sel.proto = fl->proto; 38 x->sel.ifindex = fl->oif; 39 x->id = tmpl->id; 40 if (x->id.daddr.a4 == 0) 41 x->id.daddr.a4 = daddr->a4; 42 x->props.saddr = tmpl->saddr; 43 if (x->props.saddr.a4 == 0) 44 x->props.saddr.a4 = saddr->a4; 45 x->props.mode = tmpl->mode; 46 x->props.reqid = tmpl->reqid; 47 x->props.family = AF_INET; 48 } 49 50 static struct xfrm_state_afinfo xfrm4_state_afinfo = { 51 .family = AF_INET, 52 .owner = THIS_MODULE, 53 .init_flags = xfrm4_init_flags, 54 .init_tempsel = __xfrm4_init_tempsel, 55 .output = xfrm4_output, 56 }; 57 58 void __init xfrm4_state_init(void) 59 { 60 xfrm_state_register_afinfo(&xfrm4_state_afinfo); 61 } 62 63 #if 0 64 void __exit xfrm4_state_fini(void) 65 { 66 xfrm_state_unregister_afinfo(&xfrm4_state_afinfo); 67 } 68 #endif /* 0 */ 69 70