11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * xfrm4_state.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Changes: 51da177e4SLinus Torvalds * YOSHIFUJI Hideaki @USAGI 61da177e4SLinus Torvalds * Split up af-specific portion 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds */ 91da177e4SLinus Torvalds 10dd87147eSHerbert Xu #include <net/ip.h> 111da177e4SLinus Torvalds #include <net/xfrm.h> 121da177e4SLinus Torvalds #include <linux/pfkeyv2.h> 131da177e4SLinus Torvalds #include <linux/ipsec.h> 141da177e4SLinus Torvalds 151da177e4SLinus Torvalds static struct xfrm_state_afinfo xfrm4_state_afinfo; 161da177e4SLinus Torvalds 17dd87147eSHerbert Xu static int xfrm4_init_flags(struct xfrm_state *x) 18dd87147eSHerbert Xu { 19dd87147eSHerbert Xu if (ipv4_config.no_pmtu_disc) 20dd87147eSHerbert Xu x->props.flags |= XFRM_STATE_NOPMTUDISC; 21dd87147eSHerbert Xu return 0; 22dd87147eSHerbert Xu } 23dd87147eSHerbert Xu 241da177e4SLinus Torvalds static void 251da177e4SLinus Torvalds __xfrm4_init_tempsel(struct xfrm_state *x, struct flowi *fl, 261da177e4SLinus Torvalds struct xfrm_tmpl *tmpl, 271da177e4SLinus Torvalds xfrm_address_t *daddr, xfrm_address_t *saddr) 281da177e4SLinus Torvalds { 291da177e4SLinus Torvalds x->sel.daddr.a4 = fl->fl4_dst; 301da177e4SLinus Torvalds x->sel.saddr.a4 = fl->fl4_src; 311da177e4SLinus Torvalds x->sel.dport = xfrm_flowi_dport(fl); 328f83f23eSAl Viro x->sel.dport_mask = htons(0xffff); 331da177e4SLinus Torvalds x->sel.sport = xfrm_flowi_sport(fl); 348f83f23eSAl Viro x->sel.sport_mask = htons(0xffff); 351da177e4SLinus Torvalds x->sel.prefixlen_d = 32; 361da177e4SLinus Torvalds x->sel.prefixlen_s = 32; 371da177e4SLinus Torvalds x->sel.proto = fl->proto; 381da177e4SLinus Torvalds x->sel.ifindex = fl->oif; 391da177e4SLinus Torvalds x->id = tmpl->id; 401da177e4SLinus Torvalds if (x->id.daddr.a4 == 0) 411da177e4SLinus Torvalds x->id.daddr.a4 = daddr->a4; 421da177e4SLinus Torvalds x->props.saddr = tmpl->saddr; 431da177e4SLinus Torvalds if (x->props.saddr.a4 == 0) 441da177e4SLinus Torvalds x->props.saddr.a4 = saddr->a4; 451da177e4SLinus Torvalds x->props.mode = tmpl->mode; 461da177e4SLinus Torvalds x->props.reqid = tmpl->reqid; 471da177e4SLinus Torvalds x->props.family = AF_INET; 481da177e4SLinus Torvalds } 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds static struct xfrm_state_afinfo xfrm4_state_afinfo = { 511da177e4SLinus Torvalds .family = AF_INET, 52dd87147eSHerbert Xu .init_flags = xfrm4_init_flags, 531da177e4SLinus Torvalds .init_tempsel = __xfrm4_init_tempsel, 54cdca7265SMiika Komu .output = xfrm4_output, 551da177e4SLinus Torvalds }; 561da177e4SLinus Torvalds 571da177e4SLinus Torvalds void __init xfrm4_state_init(void) 581da177e4SLinus Torvalds { 591da177e4SLinus Torvalds xfrm_state_register_afinfo(&xfrm4_state_afinfo); 601da177e4SLinus Torvalds } 611da177e4SLinus Torvalds 620742fd53SAdrian Bunk #if 0 631da177e4SLinus Torvalds void __exit xfrm4_state_fini(void) 641da177e4SLinus Torvalds { 651da177e4SLinus Torvalds xfrm_state_unregister_afinfo(&xfrm4_state_afinfo); 661da177e4SLinus Torvalds } 670742fd53SAdrian Bunk #endif /* 0 */ 681da177e4SLinus Torvalds 69