ggsn_tests: Split out generic ICMP(v6) related templates and functions
Change-Id: I53a5da05caeef4cdd59778840a6f4eed489f1b93
diff --git a/ggsn_tests/GGSN_Tests.ttcn b/ggsn_tests/GGSN_Tests.ttcn
index 68157f3..55720ee 100644
--- a/ggsn_tests/GGSN_Tests.ttcn
+++ b/ggsn_tests/GGSN_Tests.ttcn
@@ -31,6 +31,8 @@
import from IP_Types all;
import from ICMP_Types all;
import from ICMPv6_Types all;
+ import from ICMP_Templates all;
+ import from ICMPv6_Templates all;
import from Native_Functions all;
import from Osmocom_VTY_Functions all;
import from TELNETasp_PortType all;
@@ -819,285 +821,6 @@
T_default.stop;
}
- /* IPv6 router solicitation fe80::2 -> ff02::2 from 02:88:b5:1f:25:59 */
- const octetstring c_router_solicit := '6000000000103afffe800000000000000000000000000002ff02000000000000000000000000000285009f2b0000000001010288b51f2559'O;
- /* IPv6 neighbor solicitation fe80::2 -> ff02::1:ff00:2 from 02:88:b5:1f:25:59 */
- const octetstring c_neigh_solicit:= '6000000000203afffe800000000000000000000000000002ff0200000000000000000001ff00000287009f9600000000fe80000000000000000000000000000201010288b51f2559'O;
-
- /* template for sending an ICMPv4 echo request */
- template (value) PDU_ICMP ts_ICMPv4_ERQ(octetstring data := ''O) := {
- echo := {
- type_field := 8,
- code := 0,
- checksum := '0000'O,
- identifier := '0345'O,
- sequence_number := '0001'O,
- data := data
- }
- }
-
- /* template for receiving/matching an ICMPv4 echo request */
- template (present) PDU_ICMP tr_ICMPv4_ERQ := {
- echo := {
- type_field := 8,
- code := 0,
- checksum := ?,
- identifier := ?,
- sequence_number := ?,
- data := ?
- }
- }
-
- /* template for receiving/matching an ICMPv4 echo reply */
- template (present) PDU_ICMP tr_ICMPv4_ERP(template octetstring data := *) := {
- echo_reply := {
- type_field := 0,
- code := 0,
- checksum := ?,
- identifier := ?,
- sequence_number := ?,
- data := data
- }
- }
-
- /* template for receiving/matching an ICMPv6 Destination Unreachable */
- template (present) PDU_ICMP tr_ICMPv4_DU := {
- destination_unreachable := {
- type_field := 1,
- code := ?,
- checksum := ?,
- unused := ?,
- original_ip_msg := ?
- }
- }
-
- /* template to construct IPv4_packet from input arguments, ready for use in f_IPv4_enc() */
- template (value) IPv4_packet ts_IP4(OCT4 srcaddr, OCT4 dstaddr, LIN1 proto, LIN2_BO_LAST tlen, octetstring payload) := {
- header := {
- ver := 4,
- hlen := 5,
- tos := 0,
- tlen := tlen,
- id := 35902,
- res := '0'B,
- dfrag := '1'B,
- mfrag := '0'B,
- foffset := 0,
- ttl := 64,
- proto := proto,
- cksum := 0,
- srcaddr := srcaddr,
- dstaddr := dstaddr
- },
- ext_headers := omit,
- payload := payload
- }
-
- /* template to generate a 'Prefix Information' ICMPv6 option */
- template (value) OptionField ts_ICMP6_OptPrefix(OCT16 prefix, INT1 prefix_len) := {
- prefixInformation := {
- typeField := 3,
- lengthIndicator := 8,
- prefixLength := prefix_len,
- reserved1 := '000000'B,
- a_Bit := '0'B,
- l_Bit := '0'B,
- validLifetime := oct2int('FFFFFFFF'O),
- preferredLifetime := oct2int('FFFFFFFF'O),
- reserved2 := '00000000'O,
- prefix := prefix
- }
- }
-
- /* template for sending an ICMPv6 echo request */
- template (value) PDU_ICMPv6 ts_ICMPv6_ERQ := {
- echoRequest := {
- typeField := 128,
- code := 0,
- checksum := '0000'O,
- identifier := 0,
- sequenceNr := 0,
- data := ''O
- }
- }
-
- /* template for sending an ICMPv6 router solicitation */
- template (value) PDU_ICMPv6 ts_ICMPv6_RS := {
- routerSolicitation := {
- typeField := 133,
- code := 0,
- checksum := '0000'O,
- reserved := '00000000'O,
- /* TODO: do we need 'Source link-layer address' ? */
- options := omit
- }
- }
-
- /* template for sending an ICMPv6 router advertisement */
- template (value) PDU_ICMPv6 ts_ICMPv6_RA(OCT16 prefix, INT1 prefix_len) := {
- routerAdvertisement := {
- typeField := 134,
- code := 0,
- checksum := '0000'O,
- curHopLimit := 0,
- reserved := '000000'B,
- o_Bit := '0'B,
- m_Bit := '0'B,
- routerLifetime := oct2int('FFFF'O),
- reachableTime := oct2int('FFFFFFFF'O),
- retransTimer := oct2int('FFFFFFFF'O),
- options := {
- ts_ICMP6_OptPrefix(prefix, prefix_len)
- }
- }
- }
-
- /* template for sending an ICMPv6 neighbor solicitation */
- template (value) PDU_ICMPv6 ts_ICMPv6_NS(OCT16 target_addr) := {
- neighborSolicitation := {
- typeField := 135,
- code := 0,
- checksum := '0000'O,
- reserved := '00000000'O,
- targetAddress := target_addr,
- /* TODO: do we need 'Source link-layer address' ? */
- options := omit
- }
- }
-
- /* derive ICMPv6 link-local address from lower 64bit of link_id */
- /* template for receiving/matching an ICMPv6 'Prefix Information' option */
- template (present) OptionField tr_ICMP6_OptPrefix(template (present) OCT16 prefix, template (present) INT1 prefix_len) := {
- prefixInformation := {
- typeField := 3,
- lengthIndicator := 4,
- prefixLength := prefix_len,
- reserved1 := ?,
- a_Bit := ?,
- l_Bit := ?,
- validLifetime := ?,
- preferredLifetime := ?,
- reserved2 := ?,
- prefix := prefix
- }
- }
-
- /* template for receiving/matching an ICMPv6 'MTU' option, rfc4861 4.6.4 */
- template (present) OptionField tr_ICMP6_OptMTU(template (present) integer mtu := ?) := {
- mTU := {
- typeField := 5,
- lengthIndicator := 1,
- reserved := ?,
- mTU_Value := mtu
- }
- }
-
- /* template for receiving/matching an ICMPv6 router advertisement */
- template (present) PDU_ICMPv6 tr_ICMPv6_RA(template (present) OCT16 prefix, template (present) INT1 prefix_len) := {
- routerAdvertisement := {
- typeField := 134,
- code := 0,
- checksum := ?,
- curHopLimit := ?,
- reserved := ?,
- o_Bit := '0'B,
- m_Bit := '0'B,
- routerLifetime := ?,
- reachableTime := ?,
- retransTimer := ?,
- options := ({ tr_ICMP6_OptPrefix(prefix, prefix_len) },
- { tr_ICMP6_OptPrefix(prefix, prefix_len), tr_ICMP6_OptMTU }
- )
- }
- }
-
- /* template for receiving/matching an ICMPv6 Destination Unreachable */
- template (present) PDU_ICMPv6 tr_ICMPv6_DU := {
- destinationUnreachable := {
- typeField := 1,
- code := ?,
- checksum := ?,
- unused := ?,
- originalIpMsg := ?
- }
- }
-
- /* template for receiving/matching an ICMPv6 echo request */
- template (present) PDU_ICMPv6 tr_ICMPv6_ERQ := {
- echoRequest := {
- typeField := 128,
- code := 0,
- checksum := ?,
- identifier := ?,
- sequenceNr := ?,
- data := ?
- }
- }
-
- /* template for receiving/matching an ICMPv6 echo reply */
- template (present) PDU_ICMPv6 tr_ICMPv6_ERP(template octetstring data := *) := {
- echoReply := {
- typeField := 129,
- code := 0,
- checksum := ?,
- identifier := ?,
- sequenceNr := ?,
- data := data
- }
- }
-
- /* template to construct IPv6_packet from input arguments, ready for use in f_IPv6_enc() */
- template (value) IPv6_packet ts_IP6(OCT16 srcaddr, OCT16 dstaddr, LIN1 nexthead, octetstring payload, LIN1 hlim := 255) := {
- header := {
- ver := 6,
- trclass := 0,
- flabel := 0,
- plen := 0,
- nexthead := nexthead,
- hlim := hlim,
- srcaddr := srcaddr,
- dstaddr := dstaddr
- },
- ext_headers := omit,
- payload := payload
- }
-
- function f_ipv6_link_local(in OCT16 link_id) return OCT16 {
- return 'FE80000000000000'O & substr(link_id, 8, 8);
- }
-
- function f_ipv6_global(in OCT16 link_id) return OCT16 {
- return substr(link_id, 0, 8) & '1234123412341234'O;
- }
-
- /* Create a new different IPv6 addr from input. Starts mangling at byte prefix. */
- function f_ipv6_mangle(in OCT16 addr, in integer prefix := 0) return OCT16 {
- var integer i;
- var octetstring res := substr(addr, 0, prefix);
- for (i := prefix; i < lengthof(addr); i := i + 1) {
- var octetstring a := addr[i] xor4b '11'O;
- res := res & a;
- }
- return res;
- }
-
- /* Compute solicited-node multicast address as per RFC4291 2.7.1 */
- function f_ipv6_sol_node_mcast(in OCT16 addr) return OCT16 {
- return 'FF0200000000000000000001FF'O & substr(addr, 13, 3);
- }
-
- /* generate and encode ICMPv6 router solicitation */
- function f_gen_icmpv6_router_solicitation(in OCT16 link_id) return octetstring {
- const OCT16 c_ip6_all_router_mcast := 'FF020000000000000000000000000002'O;
- var OCT16 saddr := f_ipv6_link_local(link_id);
-
- var octetstring tmp;
- tmp := f_enc_PDU_ICMPv6(valueof(ts_ICMPv6_RS), saddr, c_ip6_all_router_mcast);
- var IPv6_packet ip6 := valueof(ts_IP6(saddr, c_ip6_all_router_mcast, 58, tmp));
-
- return f_IPv6_enc(ip6);
- }
-
/* Get link-id from PDP Context EUA */
function f_ctx_get_ipv6_interface_id(in PdpContext ctx) return OCT16 {
var OCT16 interface_id;
@@ -1117,14 +840,6 @@
return f_gen_icmpv6_router_solicitation(interface_id);
}
- /* generate and encode ICMPv6 neighbor solicitation */
- function f_gen_icmpv6_neigh_solicit(in OCT16 saddr, in OCT16 daddr, in OCT16 tgt_addr) return octetstring {
- var octetstring tmp;
- tmp := f_enc_PDU_ICMPv6(valueof(ts_ICMPv6_NS(tgt_addr)), saddr, daddr);
- var IPv6_packet ip6 := valueof(ts_IP6(saddr, daddr, 58, tmp));
- return f_IPv6_enc(ip6);
- }
-
/* generate and encode ICMPv6 neighbor solicitation for PDP Context */
function f_gen_icmpv6_neigh_solicit_for_pdp(in PdpContext ctx) return octetstring {
var OCT16 interface_id := f_ctx_get_ipv6_interface_id(ctx);
@@ -1134,25 +849,6 @@
return f_gen_icmpv6_neigh_solicit(link_local, daddr, link_local);
}
- /* Send an ICMPv4 echo msg through GTP given pdp ctx, and ip src and dst addr */
- function f_gen_icmpv4_echo(OCT4 saddr, OCT4 daddr, octetstring pl := ''O) return octetstring {
- var octetstring tmp := f_enc_PDU_ICMP(valueof(ts_ICMPv4_ERQ(pl)));
- var IPv4_packet ip4 := valueof(ts_IP4(saddr, daddr, 1, 50, tmp));
- var octetstring data := f_IPv4_enc(ip4);
- var OCT2 cksum := f_IPv4_checksum(data);
- data[10] := cksum[0];
- data[11] := cksum[1];
- return data;
- }
-
- /* Send an ICMPv6 echo msg through GTP given pdp ctx, and ip src and dst addr */
- function f_gen_icmpv6_echo(OCT16 saddr, OCT16 daddr) return octetstring {
- var octetstring tmp := f_enc_PDU_ICMPv6(valueof(ts_ICMPv6_ERQ), saddr, daddr);
- var IPv6_packet ip6 := valueof(ts_IP6(saddr, daddr, 58, tmp));
- var octetstring data := f_IPv6_enc(ip6);
- return data;
- }
-
/* Wait for ICMPv4 from GTP */
function f_wait_icmp4(PdpContext ctx, template PDU_ICMP expected) runs on GT_CT {
var Gtp1uUnitdata ud;
@@ -1340,8 +1036,6 @@
f_pdp_ctx_act(ctx);
f_PCO_ensure_no_duplicates(ctx.pco_neg);
- //f_send_gtpu(ctx, c_router_solicit);
- //f_send_gtpu(ctx, c_neigh_solicit);
f_send_gtpu(ctx, f_icmpv6_rs_for_pdp(ctx));
f_wait_rtr_adv(ctx);