static bool test_4to6(l4_protocol l4_proto)
{
struct tuple in, out;
int field = 0;
bool success = true;
if (is_error(init_ipv4_tuple(&in, remote4, 80, local4, 5678, l4_proto)))
return false;
success &= assert_equals_int(VER_CONTINUE, compute_out_tuple(&in, &out, NULL), "Call");
success &= assert_equals_int(L3PROTO_IPV6, out.l3_proto, "l3 proto");
success &= assert_equals_int(l4_proto, out.l4_proto, "l4 proto");
success &= assert_equals_ipv6_str(local6, &out.src.addr6.l3, "src addr");
if (l4_proto == L4PROTO_ICMP)
success &= assert_equals_u16(1234, out.src.addr6.l4, "src port (icmp id)");
else
success &= assert_equals_u16(80, out.src.addr6.l4, "src port");
success &= assert_equals_ipv6_str(remote6, &out.dst.addr6.l3, "dst addr");
success &= assert_equals_u16(1234, out.dst.addr6.l4, "dst port");
success &= assert_equals_int(0, field, "unchanged field");
return success;
}
static bool test_hairpin(l4_protocol l4_proto, skb_creator create_skb_fn)
{
struct sk_buff *skb_in = NULL;
struct sk_buff *skb_out = NULL;
struct sk_buff *skb_tmp = NULL;
struct bib_entry *static_bib = NULL;
struct bib_entry *dynamic_bib = NULL;
struct session_entry *static_session = NULL;
struct session_entry *dynamic_session = NULL;
struct tuple tuple6;
bool success = true;
static_bib = bib_create_str(SERVER_ADDR6, SERVER_PORT6,
NAT64_POOL4, SERVER_PORT6,
l4_proto);
dynamic_bib = bib_create_str(CLIENT_ADDR, CLIENT_PORT,
NAT64_POOL4, DYNAMIC_BIB_IPV4_PORT,
l4_proto);
static_session = session_create_str(
SERVER_ADDR6, SERVER_PORT6,
SERVER_HAIRPIN_ADDR, DYNAMIC_BIB_IPV4_PORT,
NAT64_POOL4, SERVER_PORT6,
NAT64_POOL4, DYNAMIC_BIB_IPV4_PORT,
l4_proto);
dynamic_session = session_create_str(CLIENT_ADDR, CLIENT_PORT,
SERVER_HAIRPIN_ADDR, SERVER_PORT6,
NAT64_POOL4, DYNAMIC_BIB_IPV4_PORT,
NAT64_POOL4, SERVER_PORT6,
l4_proto);
if (!static_bib || !dynamic_bib || !static_session || !dynamic_session)
goto fail;
/* Send the request. */
if (is_error(init_ipv6_tuple(&tuple6,
CLIENT_ADDR, CLIENT_PORT,
SERVER_HAIRPIN_ADDR, SERVER_PORT6,
l4_proto)))
goto fail;
if (is_error(create_skb_fn(&tuple6, &skb_in, 40, 32)))
goto fail;
success &= send(skb_in);
success &= BIB_ASSERT(l4_proto, static_bib, dynamic_bib);
success &= SESSION_ASSERT(l4_proto, static_session, dynamic_session);
skb_out = skb_tmp = get_sent_skb();
success &= assert_not_null(skb_out, "Request packet");
if (!success)
goto fail;
do {
success &= assert_equals_ipv6_str(SERVER_HAIRPIN_ADDR, &ipv6_hdr(skb_tmp)->saddr, "out src");
success &= assert_equals_ipv6_str(SERVER_ADDR6, &ipv6_hdr(skb_tmp)->daddr, "out dst");
skb_tmp = skb_tmp->next;
} while (skb_tmp);
switch (l4_proto) {
case L4PROTO_UDP:
success &= assert_equals_u16(DYNAMIC_BIB_IPV4_PORT,
be16_to_cpu(udp_hdr(skb_out)->source),
"out's src port");
success &= assert_equals_u16(SERVER_PORT6,
be16_to_cpu(udp_hdr(skb_out)->dest),
"out's dst port");
break;
case L4PROTO_TCP:
success &= assert_equals_u16(DYNAMIC_BIB_IPV4_PORT,
be16_to_cpu(tcp_hdr(skb_out)->source),
"out's src port");
success &= assert_equals_u16(SERVER_PORT6,
be16_to_cpu(tcp_hdr(skb_out)->dest),
"out's dst port");
break;
case L4PROTO_ICMP:
case L4PROTO_OTHER:
log_err("Test is not designed for protocol %d.", l4_proto);
success = false;
break;
}
if (!success)
goto fail;
kfree_skb(skb_out);
/* Send the response. */
if (is_error(init_ipv6_tuple(&tuple6,
SERVER_ADDR6, SERVER_PORT6,
SERVER_HAIRPIN_ADDR, DYNAMIC_BIB_IPV4_PORT,
l4_proto)))
goto fail;
if (is_error(create_skb_fn(&tuple6, &skb_in, 100, 32)))
goto fail;
success &= send(skb_in);
/* The module should have reused the entries, so the database shouldn't have changed. */
success &= BIB_ASSERT(l4_proto, static_bib, dynamic_bib);
success &= SESSION_ASSERT(l4_proto, static_session, dynamic_session);
skb_out = skb_tmp = get_sent_skb();
success &= assert_not_null(skb_out, "Response packet");
if (!success)
goto fail;
do {
success &= assert_equals_ipv6_str(SERVER_HAIRPIN_ADDR, &ipv6_hdr(skb_out)->saddr, "out src");
success &= assert_equals_ipv6_str(CLIENT_ADDR, &ipv6_hdr(skb_out)->daddr, "out dst");
skb_tmp = skb_tmp->next;
} while (skb_tmp);
switch (l4_proto) {
case L4PROTO_UDP:
success &= assert_equals_u16(SERVER_PORT6,
be16_to_cpu(udp_hdr(skb_out)->source),
"out's src port");
success &= assert_equals_u16(CLIENT_PORT,
be16_to_cpu(udp_hdr(skb_out)->dest),
"out's dst port");
break;
case L4PROTO_TCP:
success &= assert_equals_u16(SERVER_PORT6,
be16_to_cpu(tcp_hdr(skb_out)->source),
"out's src port");
success &= assert_equals_u16(CLIENT_PORT,
be16_to_cpu(tcp_hdr(skb_out)->dest),
"out's dst port");
break;
case L4PROTO_ICMP:
case L4PROTO_OTHER:
log_err("Test is not designed for protocol %d.", l4_proto);
success = false;
break;
}
kfree_skb(skb_out);
session_return(dynamic_session);
session_return(static_session);
bib_kfree(dynamic_bib);
bib_kfree(static_bib);
return success;
fail:
kfree_skb(skb_out);
if (dynamic_session)
session_return(dynamic_session);
if (static_session)
session_return(static_session);
if (dynamic_bib)
bib_kfree(dynamic_bib);
if (static_bib)
bib_kfree(static_bib);
return false;
}
