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[src/netbsd-8]: src/sys Pull up following revision(s) (requested by knakahara...



details:   https://anonhg.NetBSD.org/src/rev/5b0b65cbb47c
branches:  netbsd-8
changeset: 434734:5b0b65cbb47c
user:      martin <martin%NetBSD.org@localhost>
date:      Tue Mar 13 15:29:45 2018 +0000

description:
Pull up following revision(s) (requested by knakahara in ticket #620):
        sys/netipsec/ipsecif.c: revision 1.4
        sys/net/if_ipsec.c: revision 1.4
        sys/net/if_ipsec.c: revision 1.5
        sys/net/if_ipsec.c: revision 1.6
NAT-T src and dst port in ipsec_variant should be network byte order.
Fix missing sadb_x_ipsecrequest informations for PF_KEY message.
Functionalize duplicated code. No functional changes.
Fix ipsec(4) I/F esp_frag support.

diffstat:

 sys/net/if_ipsec.c     |  76 ++++++++++++++++++++++++++++++-------------------
 sys/netipsec/ipsecif.c |  14 ++++++--
 2 files changed, 57 insertions(+), 33 deletions(-)

diffs (232 lines):

diff -r 3458b8917e46 -r 5b0b65cbb47c sys/net/if_ipsec.c
--- a/sys/net/if_ipsec.c        Tue Mar 13 14:59:06 2018 +0000
+++ b/sys/net/if_ipsec.c        Tue Mar 13 15:29:45 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_ipsec.c,v 1.3.2.2 2018/02/11 21:17:34 snj Exp $  */
+/*     $NetBSD: if_ipsec.c,v 1.3.2.3 2018/03/13 15:29:45 martin Exp $  */
 
 /*
  * Copyright (c) 2017 Internet Initiative Japan Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_ipsec.c,v 1.3.2.2 2018/02/11 21:17:34 snj Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_ipsec.c,v 1.3.2.3 2018/03/13 15:29:45 martin Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -109,7 +109,8 @@
 static inline size_t if_ipsec_set_sadb_dst(struct sadb_address *,
     struct sockaddr *, int);
 static inline size_t if_ipsec_set_sadb_x_policy(struct sadb_x_policy *,
-    struct sadb_x_ipsecrequest *, uint16_t, uint8_t, uint32_t, uint8_t);
+    struct sadb_x_ipsecrequest *, uint16_t, uint8_t, uint32_t, uint8_t,
+    struct sockaddr *, struct sockaddr *);
 static inline void if_ipsec_set_sadb_msg(struct sadb_msg *, uint16_t, uint8_t);
 static inline void if_ipsec_set_sadb_msg_add(struct sadb_msg *, uint16_t);
 static inline void if_ipsec_set_sadb_msg_del(struct sadb_msg *, uint16_t);
@@ -892,7 +893,7 @@
        switch(nsrc->sa_family) {
 #ifdef INET
        case AF_INET:
-               nsport = ntohs(satosin(src)->sin_port);
+               nsport = satosin(src)->sin_port;
                /*
                 * avoid confuse SP when NAT-T disabled,
                 * e.g.
@@ -900,15 +901,15 @@
                 *     confuse : 10.0.1.2[600] 10.0.1.1[600] 4(ipv4)
                 */
                satosin(nsrc)->sin_port = 0;
-               ndport = ntohs(satosin(dst)->sin_port);
+               ndport = satosin(dst)->sin_port;
                satosin(ndst)->sin_port = 0;
                break;
 #endif /* INET */
 #ifdef INET6
        case AF_INET6:
-               nsport = ntohs(satosin6(src)->sin6_port);
+               nsport = satosin6(src)->sin6_port;
                satosin6(nsrc)->sin6_port = 0;
-               ndport = ntohs(satosin6(dst)->sin6_port);
+               ndport = satosin6(dst)->sin6_port;
                satosin6(ndst)->sin6_port = 0;
                break;
 #endif /* INET6 */
@@ -1320,6 +1321,20 @@
 }
 
 static inline void
+if_ipsec_add_mbuf_addr_port(struct mbuf *m0, struct sockaddr *addr, in_port_t port)
+{
+
+       if (port == 0) {
+               if_ipsec_add_mbuf(m0, addr, addr->sa_len);
+       } else {
+               struct sockaddr addrport;
+
+               if_ipsec_set_addr_port(&addrport, addr, port);
+               if_ipsec_add_mbuf(m0, &addrport, addrport.sa_len);
+       }
+}
+
+static inline void
 if_ipsec_add_pad(struct mbuf *m0, size_t len)
 {
        struct mbuf *m;
@@ -1388,7 +1403,7 @@
 static inline size_t
 if_ipsec_set_sadb_x_policy(struct sadb_x_policy *xpl,
     struct sadb_x_ipsecrequest *xisr, uint16_t policy, uint8_t dir, uint32_t id,
-    uint8_t level)
+    uint8_t level, struct sockaddr *src, struct sockaddr *dst)
 {
        size_t size;
 
@@ -1397,6 +1412,10 @@
        size = sizeof(*xpl);
        if (policy == IPSEC_POLICY_IPSEC) {
                size += PFKEY_ALIGN8(sizeof(*xisr));
+               if (src != NULL)
+                       size += PFKEY_ALIGN8(src->sa_len);
+               if (dst != NULL)
+                       size += PFKEY_ALIGN8(dst->sa_len);
        }
        xpl->sadb_x_policy_len = PFKEY_UNIT64(size);
        xpl->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
@@ -1408,6 +1427,10 @@
 
        if (policy == IPSEC_POLICY_IPSEC) {
                xisr->sadb_x_ipsecrequest_len = PFKEY_ALIGN8(sizeof(*xisr));
+               if (src != NULL)
+                       xisr->sadb_x_ipsecrequest_len += PFKEY_ALIGN8(src->sa_len);
+               if (dst != NULL)
+                       xisr->sadb_x_ipsecrequest_len += PFKEY_ALIGN8(dst->sa_len);
                xisr->sadb_x_ipsecrequest_proto = IPPROTO_ESP;
                xisr->sadb_x_ipsecrequest_mode = IPSEC_MODE_TRANSPORT;
                xisr->sadb_x_ipsecrequest_level = level;
@@ -1459,14 +1482,14 @@
 #ifdef INET
        case AF_INET: {
                struct sockaddr_in *sin = satosin(addrport);
-               sin->sin_port = htons(port);
+               sin->sin_port = port;
                break;
        }
 #endif /* INET */
 #ifdef INET6
        case AF_INET6: {
                struct sockaddr_in6 *sin6 = satosin6(addrport);
-               sin6->sin6_port = htons(port);
+               sin6->sin6_port = port;
                break;
        }
 #endif /* INET6 */
@@ -1506,7 +1529,7 @@
        ext_msg_len += PFKEY_UNIT64(size);
        size = if_ipsec_set_sadb_dst(&xdst, dst, proto);
        ext_msg_len += PFKEY_UNIT64(size);
-       size = if_ipsec_set_sadb_x_policy(&xpl, &xisr, policy, dir, 0, level);
+       size = if_ipsec_set_sadb_x_policy(&xpl, &xisr, policy, dir, 0, level, src, dst);
        ext_msg_len += PFKEY_UNIT64(size);
        if_ipsec_set_sadb_msg_add(&msg, ext_msg_len);
 
@@ -1516,34 +1539,29 @@
        m_copyback(m, 0, sizeof(msg), &msg);
 
        if_ipsec_add_mbuf(m, &xsrc, sizeof(xsrc));
-       if (sport == 0) {
-               if_ipsec_add_mbuf(m, src, src->sa_len);
-       } else {
-               struct sockaddr addrport;
-
-               if_ipsec_set_addr_port(&addrport, src, sport);
-               if_ipsec_add_mbuf(m, &addrport, addrport.sa_len);
-       }
+       if_ipsec_add_mbuf_addr_port(m, src, sport);
        padlen = PFKEY_UNUNIT64(xsrc.sadb_address_len)
                - (sizeof(xsrc) + PFKEY_ALIGN8(src->sa_len));
        if_ipsec_add_pad(m, padlen);
 
        if_ipsec_add_mbuf(m, &xdst, sizeof(xdst));
-       if (dport == 0) {
-               if_ipsec_add_mbuf(m, dst, dst->sa_len);
-       } else {
-               struct sockaddr addrport;
-
-               if_ipsec_set_addr_port(&addrport, dst, dport);
-               if_ipsec_add_mbuf(m, &addrport, addrport.sa_len);
-       }
+       if_ipsec_add_mbuf_addr_port(m, dst, dport);
        padlen = PFKEY_UNUNIT64(xdst.sadb_address_len)
                - (sizeof(xdst) + PFKEY_ALIGN8(dst->sa_len));
        if_ipsec_add_pad(m, padlen);
 
        if_ipsec_add_mbuf(m, &xpl, sizeof(xpl));
-       if (policy == IPSEC_POLICY_IPSEC)
+       if (policy == IPSEC_POLICY_IPSEC) {
                if_ipsec_add_mbuf(m, &xisr, sizeof(xisr));
+               if_ipsec_add_mbuf_addr_port(m, src, sport);
+               if_ipsec_add_mbuf_addr_port(m, dst, dport);
+       }
+       padlen = PFKEY_UNUNIT64(xpl.sadb_x_policy_len) - sizeof(xpl);
+       if (src != NULL)
+               padlen -= PFKEY_ALIGN8(src->sa_len);
+       if (dst != NULL)
+               padlen -= PFKEY_ALIGN8(dst->sa_len);
+       if_ipsec_add_pad(m, padlen);
 
        /* key_kpi_spdadd() has already done KEY_SP_REF(). */
        return key_kpi_spdadd(m);
@@ -1636,7 +1654,7 @@
 
        MGETHDR(m, M_WAITOK, MT_DATA);
 
-       size = if_ipsec_set_sadb_x_policy(&xpl, NULL, 0, 0, sp->id, 0);
+       size = if_ipsec_set_sadb_x_policy(&xpl, NULL, 0, 0, sp->id, 0, NULL, NULL);
        ext_msg_len += PFKEY_UNIT64(size);
 
        if_ipsec_set_sadb_msg_del(&msg, ext_msg_len);
diff -r 3458b8917e46 -r 5b0b65cbb47c sys/netipsec/ipsecif.c
--- a/sys/netipsec/ipsecif.c    Tue Mar 13 14:59:06 2018 +0000
+++ b/sys/netipsec/ipsecif.c    Tue Mar 13 15:29:45 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ipsecif.c,v 1.1.2.3 2018/03/06 11:17:55 martin Exp $  */
+/*     $NetBSD: ipsecif.c,v 1.1.2.4 2018/03/13 15:29:45 martin Exp $  */
 
 /*
  * Copyright (c) 2017 Internet Initiative Japan Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ipsecif.c,v 1.1.2.3 2018/03/06 11:17:55 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ipsecif.c,v 1.1.2.4 2018/03/13 15:29:45 martin Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -260,7 +260,13 @@
        if (mtag)
                m_tag_delete(m, mtag);
 
-       error = ip_fragment(m, ifp, mtu);
+       /* consider new IP header prepended in ipsecif4_output() */
+       if (mtu <= sizeof(struct ip)) {
+               m_freem(m);
+               return ENETUNREACH;
+       }
+       m->m_pkthdr.csum_flags |= M_CSUM_IPv4;
+       error = ip_fragment(m, ifp, mtu - sizeof(struct ip));
        if (error)
                return error;
 
@@ -397,7 +403,7 @@
         * frangmentation is already done in ipsecif4_fragout(),
         * so ipsec4_process_packet() must not do fragmentation here.
         */
-       KASSERT(error != 0 || sa_mtu == 0);
+       KASSERT(sa_mtu == 0);
 
 done:
        return error;



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