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-rwxr-xr-xsrc/plugins/srv6-mobile/extra/runner.py83
-rw-r--r--src/plugins/srv6-mobile/mobile.h1
-rw-r--r--src/plugins/srv6-mobile/node.c489
3 files changed, 459 insertions, 114 deletions
diff --git a/src/plugins/srv6-mobile/extra/runner.py b/src/plugins/srv6-mobile/extra/runner.py
index 9fffe419029..79ec2d007c5 100755
--- a/src/plugins/srv6-mobile/extra/runner.py
+++ b/src/plugins/srv6-mobile/extra/runner.py
@@ -865,6 +865,77 @@ class Program(object):
print("Sending packet on {}:".format(c1.name))
p.show2()
+ time.sleep(10)
+ c1.enable_trace(10)
+ c4.enable_trace(10)
+
+ c4.pg_start_capture()
+
+ c1.pg_create_stream(p)
+ c1.pg_enable()
+
+ # timeout (sleep) if needed
+ print("Sleeping")
+ time.sleep(5)
+
+ print("Receiving packet on {}:".format(c4.name))
+ for p in c4.pg_read_packets():
+ p.show2()
+
+ def test_gtp4_usid(self):
+ # TESTS:
+ # trace add af-packet-input 10
+ # pg interface on c1 172.20.0.1
+ # pg interface on c4 B::1/120
+
+ self.start_containers()
+
+ c1 = self.containers.get(self.get_name(self.instance_names[0]))
+ c2 = self.containers.get(self.get_name(self.instance_names[1]))
+ c3 = self.containers.get(self.get_name(self.instance_names[2]))
+ c4 = self.containers.get(self.get_name(self.instance_names[-1]))
+
+ c1.pg_create_interface4(
+ local_ip="172.16.0.1/30",
+ remote_ip="172.16.0.2/30",
+ local_mac="aa:bb:cc:dd:ee:01",
+ remote_mac="aa:bb:cc:dd:ee:02")
+ c4.pg_create_interface4(
+ local_ip="1.0.0.2/30",
+ remote_ip="1.0.0.1",
+ local_mac="aa:bb:cc:dd:ee:11",
+ remote_mac="aa:bb:cc:dd:ee:22")
+
+ c1.vppctl_exec("set sr encaps source addr A1::1")
+ c1.vppctl_exec("sr policy add bsid D4:: next D2:1111:aaaa:bbbb::")
+ c1.vppctl_exec("sr policy add bsid D5:: behavior t.m.gtp4.d D4::/32 v6src_prefix C1::/64 nhtype ipv4")
+ c1.vppctl_exec("sr steer l3 172.20.0.1/32 via bsid D5::")
+
+ c2.vppctl_exec("sr localsid prefix D2:1111:aaaa::/48 behavior end usid 16")
+
+ c3.vppctl_exec("sr localsid prefix D2:1111:bbbb::/48 behavior end usid 16")
+
+ c4.vppctl_exec(
+ "sr localsid prefix D4::/32 "
+ "behavior end.m.gtp4.e v4src_position 64")
+
+ c2.set_ipv6_route("eth2", "A2::2", "D2:1111:bbbb::/48")
+ c2.set_ipv6_route("eth1", "A1::1", "C::/120")
+ c3.set_ipv6_route("eth2", "A3::2", "D4::/32")
+ c3.set_ipv6_route("eth1", "A2::1", "C::/120")
+ c4.set_ip_pgroute("pg0", "1.0.0.1", "172.20.0.1/32")
+
+ p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") /
+ IP(src="172.20.0.2", dst="172.20.0.1") /
+ UDP(sport=2152, dport=2152) /
+ GTP_U_Header(gtp_type="g_pdu", teid=200) /
+ IP(src="172.99.0.1", dst="172.99.0.2") /
+ ICMP())
+
+ print("Sending packet on {}:".format(c1.name))
+ p.show2()
+
+ time.sleep(10)
c1.enable_trace(10)
c4.enable_trace(10)
@@ -997,7 +1068,7 @@ class Program(object):
p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") /
IP(src="172.20.0.2", dst="172.20.0.1") /
UDP(sport=2152, dport=2152) /
- GTP_U_Header(gtp_type="echo_request", teid=200))
+ GTP_U_Header(gtp_type="echo_request", S=1, teid=200, seq=200))
print("Sending packet on {}:".format(c1.name))
p.show2()
@@ -1360,7 +1431,7 @@ class Program(object):
p = (Ether(src="aa:bb:cc:dd:ee:02", dst="aa:bb:cc:dd:ee:01") /
IPv6(src="C::2", dst="D::2") /
UDP(sport=2152, dport=2152) /
- GTP_U_Header(gtp_type="echo_request", teid=200))
+ GTP_U_Header(gtp_type="echo_request", S=1, teid=200, seq=300))
print("Sending packet on {}:".format(c1.name))
p.show2()
@@ -1853,7 +1924,6 @@ class Program(object):
"running" if self.networks.get(name) else "missing"))
def build_image(self):
- # TODO: optimize build process for speed and image size
print("VPP Path (build): {}".format(self.vpp_path))
self.containers.build(self.path, self.vpp_path)
@@ -1935,6 +2005,7 @@ def get_args():
# "tmap_ipv6",
# "tmap_ipv6_5g",
"gtp4",
+ "gtp4_usid",
"gtp4_5g",
"gtp4_echo",
"gtp4_ipv6",
@@ -1967,8 +2038,10 @@ def main(op=None, prefix=None, verbose=None,
image = "srv6m-release-image"
elif image == 'debug':
image = "srv6m-image"
+ else
+ image = "srv6m-image"
- print("Verified image: {}".format(image))
+ print("Target image: {}".format(image))
program = Program(image, prefix)
@@ -2001,6 +2074,8 @@ def main(op=None, prefix=None, verbose=None,
# program.test_tmap_ipv6_5g()
elif op == 'gtp4':
program.test_gtp4()
+ elif op == 'gtp4_usid':
+ program.test_gtp4_usid()
elif op == 'gtp4_5g':
program.test_gtp4_5g()
elif op == 'gtp4_echo':
diff --git a/src/plugins/srv6-mobile/mobile.h b/src/plugins/srv6-mobile/mobile.h
index f1de99a306e..5a086b66c6e 100644
--- a/src/plugins/srv6-mobile/mobile.h
+++ b/src/plugins/srv6-mobile/mobile.h
@@ -51,6 +51,7 @@
#endif
#define GTPU_EXTHDR_FLAG 0x04
+#define GTPU_SEQ_FLAG 0x02
#define GTPU_EXTHDR_PDU_SESSION 0x85
#define SRH_TAG_ECHO_REPLY 0x0008
diff --git a/src/plugins/srv6-mobile/node.c b/src/plugins/srv6-mobile/node.c
index eb9a20e3c53..de3bc4a6f0d 100644
--- a/src/plugins/srv6-mobile/node.c
+++ b/src/plugins/srv6-mobile/node.c
@@ -129,10 +129,6 @@ format_srv6_end_rewrite_trace6 (u8 * s, va_list * args)
_(M_GTP6_D_DI_PACKETS, "srv6 End.M.GTP6.D.DI packets") \
_(M_GTP6_D_DI_BAD_PACKETS, "srv6 End.M.GTP6.D.DI bad packets")
-#define foreach_srv6_end_v6_dt_error \
- _(M_GTP6_DT_PACKETS, "srv6 End.M.GTP6.DT packets") \
- _(M_GTP6_DT_BAD_PACKETS, "srv6 End.M.GTP6.DT bad packets")
-
typedef enum
{
#define _(sym,str) SRV6_END_ERROR_##sym,
@@ -173,14 +169,6 @@ typedef enum
SRV6_END_N_V6_D_DI_ERROR,
} srv6_end_error_v6_d_di_t;
-typedef enum
-{
-#define _(sym,str) SRV6_END_ERROR_##sym,
- foreach_srv6_end_v6_dt_error
-#undef _
- SRV6_END_N_V6_DT_ERROR,
-} srv6_end_error_v6_dt_t;
-
static char *srv6_end_error_v4_strings[] = {
#define _(sym,string) string,
foreach_srv6_end_v4_error
@@ -258,20 +246,22 @@ hash_uword_to_u16 (uword * key)
#endif
}
-static inline void
-gtp_type_set (gtpu_header_t * gtpu, u16 tag)
+static inline u8
+gtpu_type_get (u16 tag)
{
u16 val;
val = clib_net_to_host_u16 (tag);
if (val & SRH_TAG_ECHO_REPLY)
- gtpu->type = GTPU_TYPE_ECHO_REPLY;
+ return GTPU_TYPE_ECHO_REPLY;
else if (val & SRH_TAG_ECHO_REQUEST)
- gtpu->type = GTPU_TYPE_ECHO_REQUEST;
+ return GTPU_TYPE_ECHO_REQUEST;
else if (val & SRH_TAG_ERROR_INDICATION)
- gtpu->type = GTPU_TYPE_ERROR_INDICATION;
+ return GTPU_TYPE_ERROR_INDICATION;
else if (val & SRH_TAG_END_MARKER)
- gtpu->type = GTPU_TYPE_END_MARKER;
+ return GTPU_TYPE_END_MARKER;
+
+ return GTPU_TYPE_GTPU;
}
// Function for SRv6 GTP4.E function.
@@ -343,10 +333,12 @@ VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm,
}
else
{
+ u8 gtpu_type = 0;
u16 tag = 0;
- u32 teid;
+ u32 teid = 0;
u8 *teid8p = (u8 *) & teid;
u8 qfi = 0;
+ u16 seq = 0;
u32 index;
u32 offset, shift;
u32 hdrlen = 0;
@@ -383,16 +375,29 @@ VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm,
offset = ls0->localsid_len / 8;
shift = ls0->localsid_len % 8;
+ gtpu_type = gtpu_type_get (tag);
+
if (PREDICT_TRUE (shift == 0))
{
clib_memcpy_fast (&dst4.as_u8[0], &dst0.as_u8[offset], 4);
qfi = dst0.as_u8[offset + 4];
- clib_memcpy_fast (teid8p, &dst0.as_u8[offset + 5], 4);
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ clib_memcpy_fast (&seq, &dst0.as_u8[offset + 5], 2);
+ }
+ else
+ {
+ clib_memcpy_fast (teid8p, &dst0.as_u8[offset + 5], 4);
+ }
}
else
{
+ u8 *sp;
+
for (index = 0; index < 4; index++)
{
dst4.as_u8[index] = dst0.as_u8[offset + index] << shift;
@@ -403,12 +408,27 @@ VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm,
qfi |= dst0.as_u8[offset + 4] << shift;
qfi |= dst0.as_u8[offset + 5] >> (8 - shift);
- for (index = 0; index < 4; index++)
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ sp = (u8 *) & seq;
+ for (index = 0; index < 2; index++)
+ {
+ sp[index] = dst0.as_u8[offset + 5 + index] << shift;
+ sp[index] =
+ dst0.as_u8[offset + 6 + index] >> (8 - shift);
+ }
+ }
+ else
{
- *teid8p = dst0.as_u8[offset + 5 + index] << shift;
- *teid8p |=
- dst0.as_u8[offset + 6 + index] >> (8 - shift);
- teid8p++;
+ for (index = 0; index < 4; index++)
+ {
+ *teid8p = dst0.as_u8[offset + 5 + index] << shift;
+ *teid8p |=
+ dst0.as_u8[offset + 6 + index] >> (8 - shift);
+ teid8p++;
+ }
}
}
@@ -416,8 +436,15 @@ VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm,
{
hdrlen =
sizeof (gtpu_exthdr_t) + sizeof (gtpu_pdu_session_t);
- len0 += hdrlen;
}
+ else if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ hdrlen = sizeof (gtpu_exthdr_t);
+ }
+ len0 += hdrlen;
+
hdrlen += sizeof (ip4_gtpu_header_t);
// IPv4 GTP-U header creation.
@@ -433,10 +460,7 @@ VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm,
hdr0->gtpu.teid = teid;
hdr0->gtpu.length = clib_host_to_net_u16 (len0);
- if (PREDICT_FALSE (tag != 0))
- {
- gtp_type_set (&hdr0->gtpu, tag);
- }
+ hdr0->gtpu.type = gtpu_type;
if (qfi)
{
@@ -444,7 +468,9 @@ VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm,
gtpu_pdu_session_t *sess;
hdr0->gtpu.ver_flags |= GTPU_EXTHDR_FLAG;
+
hdr0->gtpu.ext->seq = 0;
+
hdr0->gtpu.ext->npdu_num = 0;
hdr0->gtpu.ext->nextexthdr = GTPU_EXTHDR_PDU_SESSION;
@@ -465,6 +491,16 @@ VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm,
sess->nextexthdr = 0;
}
+ if (gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ hdr0->gtpu.ver_flags |= GTPU_SEQ_FLAG;
+ hdr0->gtpu.ext->seq = seq;
+ hdr0->gtpu.ext->npdu_num = 0;
+ hdr0->gtpu.ext->nextexthdr = 0;
+ }
+
offset = ls_param->v4src_position / 8;
shift = ls_param->v4src_position % 8;
@@ -618,6 +654,8 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm,
u8 *teidp;
u8 qfi = 0;
u8 *qfip = NULL;
+ u16 seq = 0;
+ u8 *seqp = NULL;
u32 offset, shift, index;
ip6srv_combo_header_t *ip6srv;
gtpu_pdu_session_t *sess = NULL;
@@ -632,10 +670,14 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm,
gtpu_type = hdr->gtpu.type;
- if (hdr->gtpu.ver_flags & GTPU_EXTHDR_FLAG)
+ if (hdr->gtpu.ver_flags & (GTPU_EXTHDR_FLAG | GTPU_SEQ_FLAG))
{
// Extention header.
hdr_len += sizeof (gtpu_exthdr_t);
+
+ seq = hdr->gtpu.ext->seq;
+ seqp = (u8 *) & seq;
+
if (hdr->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION)
{
// PDU Session Container.
@@ -682,7 +724,16 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm,
seg.as_u8[offset + 4] = qfi;
}
- clib_memcpy_fast (&seg.as_u8[offset + 5], teidp, 4);
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ clib_memcpy_fast (&seg.as_u8[offset + 5], seqp, 2);
+ }
+ else
+ {
+ clib_memcpy_fast (&seg.as_u8[offset + 5], teidp, 4);
+ }
}
else
{
@@ -691,10 +742,6 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm,
seg.as_u8[offset + index] |= dstp[index] >> shift;
seg.as_u8[offset + index + 1] |=
dstp[index] << (8 - shift);
-
- seg.as_u8[offset + index + 5] |= teidp[index] >> shift;
- seg.as_u8[offset + index + 6] |=
- teidp[index] << (8 - shift);
}
if (qfip)
@@ -711,6 +758,29 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm,
seg.as_u8[offset + 4] |= qfi >> shift;
seg.as_u8[offset + 5] |= qfi << (8 - shift);
}
+
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ for (index = 0; index < 2; index++)
+ {
+ seg.as_u8[offset + 5 + index] |=
+ seqp[index] >> shift;
+ seg.as_u8[offset + 6 + index] |=
+ seqp[index] << (8 - shift);
+ }
+ }
+ else
+ {
+ for (index = 0; index < 4; index++)
+ {
+ seg.as_u8[offset + index + 5] |=
+ teidp[index] >> shift;
+ seg.as_u8[offset + index + 6] |=
+ teidp[index] << (8 - shift);
+ }
+ }
}
src6 = ls_param->v6src_prefix;
@@ -785,16 +855,49 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm,
clib_memcpy_fast (ip6srv, sl->rewrite,
vec_len (sl->rewrite));
- ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
+ if (vec_len (sl->segments) > 1)
+ {
+ ip6srv->sr.tag =
+ clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
+
+ ip6srv->sr.segments_left += 1;
+ ip6srv->sr.last_entry += 1;
- ip6srv->sr.tag =
- clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
+ ip6srv->sr.length += sizeof (ip6_address_t) / 8;
+ ip6srv->sr.segments[0] = seg;
- ip6srv->sr.segments_left += 1;
- ip6srv->sr.last_entry += 1;
+ clib_memcpy_fast (&ip6srv->sr.segments[1],
+ (u8 *) (sl->rewrite +
+ sizeof (ip6_header_t) +
+ sizeof (ip6_sr_header_t)),
+ vec_len (sl->segments) *
+ sizeof (ip6_address_t));
+ }
+ else
+ {
+ ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
+
+ ip6srv->sr.type = ROUTING_HEADER_TYPE_SR;
+
+ ip6srv->sr.segments_left = 1;
+ ip6srv->sr.last_entry = 0;
+
+ ip6srv->sr.length =
+ ((sizeof (ip6_sr_header_t) +
+ sizeof (ip6_address_t)) / 8) - 1;
+ ip6srv->sr.flags = 0;
- ip6srv->sr.length += sizeof (ip6_address_t) / 8;
- ip6srv->sr.segments[0] = seg;
+ ip6srv->sr.tag =
+ clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
+
+ ip6srv->sr.segments[0] = seg;
+ if (vec_len (sl->segments))
+ {
+ ip6srv->sr.segments[1] = sl->segments[0];
+ ip6srv->sr.length += sizeof (ip6_address_t) / 8;
+ ip6srv->sr.last_entry++;
+ }
+ }
if (PREDICT_TRUE (encap != NULL))
{
@@ -842,13 +945,6 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm,
{
ip6srv->sr.protocol = IP_PROTOCOL_NONE;
}
-
- clib_memcpy_fast (&ip6srv->sr.segments[1],
- (u8 *) (sl->rewrite +
- sizeof (ip6_header_t) +
- sizeof (ip6_sr_header_t)),
- vec_len (sl->segments) *
- sizeof (ip6_address_t));
}
else
{
@@ -1063,9 +1159,11 @@ VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm,
len0 = vlib_buffer_length_in_chain (vm, b0);
- u32 teid;
+ u32 teid = 0;
u8 *teid8p = (u8 *) & teid;
u8 qfi = 0;
+ u16 seq = 0;
+ u8 gtpu_type = 0;
u16 index;
u16 offset, shift;
u32 hdrlen = 0;
@@ -1075,19 +1173,48 @@ VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm,
offset = index / 8;
shift = index % 8;
+ gtpu_type = gtpu_type_get (tag);
+
if (PREDICT_TRUE (shift == 0))
{
- clib_memcpy_fast (teid8p, &dst0.as_u8[offset], 4);
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ clib_memcpy_fast (&seq, &dst0.as_u8[offset], 2);
+ }
+ else
+ {
+ clib_memcpy_fast (teid8p, &dst0.as_u8[offset], 4);
+ }
qfi = dst0.as_u8[offset + 4];
}
else
{
- for (index = offset; index < offset + 4; index++)
+ u8 *sp;
+
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
{
- *teid8p = dst0.as_u8[index] << shift;
- *teid8p |= dst0.as_u8[index + 1] >> (8 - shift);
- teid8p++;
+ sp = (u8 *) & seq;
+ for (index = 0; index < 2; index++)
+ {
+ sp[index] = dst0.as_u8[offset + index] << shift;
+ sp[index] =
+ dst0.as_u8[offset + index + 1] >> (8 - shift);
+ }
+ }
+ else
+ {
+ for (index = 0; index < 4; index++)
+ {
+ *teid8p = dst0.as_u8[offset + index] << shift;
+ *teid8p |=
+ dst0.as_u8[offset + index + 1] >> (8 - shift);
+ teid8p++;
+ }
}
qfi |= dst0.as_u8[offset + 4] << shift;
@@ -1098,8 +1225,15 @@ VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm,
{
hdrlen =
sizeof (gtpu_exthdr_t) + sizeof (gtpu_pdu_session_t);
- len0 += hdrlen;
}
+ else if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ hdrlen = sizeof (gtpu_exthdr_t);
+ }
+
+ len0 += hdrlen;
hdrlen += sizeof (ip6_gtpu_header_t);
vlib_buffer_advance (b0, -(word) hdrlen);
@@ -1112,10 +1246,7 @@ VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm,
hdr0->gtpu.teid = teid;
hdr0->gtpu.length = clib_host_to_net_u16 (len0);
- if (PREDICT_FALSE (tag != 0))
- {
- gtp_type_set (&hdr0->gtpu, tag);
- }
+ hdr0->gtpu.type = gtpu_type;
if (qfi)
{
@@ -1123,6 +1254,7 @@ VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm,
gtpu_pdu_session_t *sess;
hdr0->gtpu.ver_flags |= GTPU_EXTHDR_FLAG;
+
hdr0->gtpu.ext->seq = 0;
hdr0->gtpu.ext->npdu_num = 0;
hdr0->gtpu.ext->nextexthdr = GTPU_EXTHDR_PDU_SESSION;
@@ -1144,6 +1276,16 @@ VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm,
sess->nextexthdr = 0;
}
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ hdr0->gtpu.ver_flags |= GTPU_SEQ_FLAG;
+ hdr0->gtpu.ext->seq = seq;
+ hdr0->gtpu.ext->npdu_num = 0;
+ hdr0->gtpu.ext->nextexthdr = 0;
+ }
+
hdr0->udp.length = clib_host_to_net_u16 (len0 +
sizeof (udp_header_t) +
sizeof
@@ -1241,6 +1383,8 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm,
u8 gtpu_type = 0;
u8 qfi;
u8 *qfip = NULL;
+ u16 seq = 0;
+ u8 *seqp = NULL;
u32 offset, shift;
u32 hdrlen;
ip6_header_t *encap = NULL;
@@ -1288,10 +1432,14 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm,
teid = hdr0->gtpu.teid;
teidp = (u8 *) & teid;
- if (hdr0->gtpu.ver_flags & GTPU_EXTHDR_FLAG)
+ if (hdr0->gtpu.ver_flags & (GTPU_EXTHDR_FLAG | GTPU_SEQ_FLAG))
{
// Extention header.
hdrlen += sizeof (gtpu_exthdr_t);
+
+ seq = hdr0->gtpu.ext->seq;
+ seqp = (u8 *) & seq;
+
if (hdr0->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION)
{
// PDU Session Container.
@@ -1317,7 +1465,18 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm,
offset += 1;
if (PREDICT_TRUE (shift == 0))
{
- clib_memcpy_fast (&seg0.as_u8[offset], teidp, 4);
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ if (seqp)
+ clib_memcpy_fast (&seg0.as_u8[offset], seqp, 2);
+ }
+ else
+ {
+ clib_memcpy_fast (&seg0.as_u8[offset], teidp, 4);
+ }
+
if (qfip)
{
qfi =
@@ -1336,11 +1495,28 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm,
{
int idx;
- for (idx = 0; idx < 4; idx++)
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ if (seqp)
+ {
+ for (idx = 0; idx < 2; idx++)
+ {
+ seg0.as_u8[offset + idx] |= seqp[idx] >> shift;
+ seg0.as_u8[offset + idx + 1] |=
+ seqp[idx] << (8 - shift);
+ }
+ }
+ }
+ else
{
- seg0.as_u8[offset + idx] |= teidp[idx] >> shift;
- seg0.as_u8[offset + idx + 1] |=
- teidp[idx] << (8 - shift);
+ for (idx = 0; idx < 4; idx++)
+ {
+ seg0.as_u8[offset + idx] |= teidp[idx] >> shift;
+ seg0.as_u8[offset + idx + 1] |=
+ teidp[idx] << (8 - shift);
+ }
}
if (qfip)
@@ -1421,17 +1597,51 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm,
clib_memcpy_fast (ip6srv, sl->rewrite,
vec_len (sl->rewrite));
- ip6srv->ip.src_address = src0;
- ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
+ if (vec_len (sl->segments) > 1)
+ {
+ ip6srv->ip.src_address = src0;
- ip6srv->sr.tag =
- clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
+ ip6srv->sr.tag =
+ clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
+
+ ip6srv->sr.segments_left += 1;
+ ip6srv->sr.last_entry += 1;
- ip6srv->sr.segments_left += 1;
- ip6srv->sr.last_entry += 1;
+ ip6srv->sr.length += sizeof (ip6_address_t) / 8;
+ ip6srv->sr.segments[0] = seg0;
- ip6srv->sr.length += sizeof (ip6_address_t) / 8;
- ip6srv->sr.segments[0] = seg0;
+ clib_memcpy_fast (&ip6srv->sr.segments[1],
+ (u8 *) (sl->rewrite +
+ sizeof (ip6_header_t) +
+ sizeof (ip6_sr_header_t)),
+ vec_len (sl->segments) *
+ sizeof (ip6_address_t));
+ }
+ else
+ {
+ ip6srv->ip.src_address = src0;
+ ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
+
+ ip6srv->sr.type = ROUTING_HEADER_TYPE_SR;
+ ip6srv->sr.segments_left = 1;
+ ip6srv->sr.last_entry = 0;
+ ip6srv->sr.length =
+ ((sizeof (ip6_sr_header_t) +
+ sizeof (ip6_address_t)) / 8) - 1;
+ ip6srv->sr.flags = 0;
+
+ ip6srv->sr.tag =
+ clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
+
+ ip6srv->sr.segments[0] = seg0;
+
+ if (vec_len (sl->segments))
+ {
+ ip6srv->sr.segments[1] = sl->segments[0];
+ ip6srv->sr.last_entry++;
+ ip6srv->sr.length += sizeof (ip6_address_t) / 8;
+ }
+ }
if (PREDICT_TRUE (encap != NULL))
{
@@ -1479,13 +1689,6 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm,
{
ip6srv->sr.protocol = IP_PROTOCOL_NONE;
}
-
- clib_memcpy_fast (&ip6srv->sr.segments[1],
- (u8 *) (sl->rewrite +
- sizeof (ip6_header_t) +
- sizeof (ip6_sr_header_t)),
- vec_len (sl->segments) *
- sizeof (ip6_address_t));
}
else
{
@@ -1636,6 +1839,8 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm,
u8 gtpu_type = 0;
u8 qfi = 0;
u8 *qfip = NULL;
+ u16 seq = 0;
+ u8 *seqp = NULL;
u32 offset, shift;
u32 hdrlen;
ip6_header_t *encap = NULL;
@@ -1684,10 +1889,14 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm,
teid = hdr0->gtpu.teid;
teidp = (u8 *) & teid;
- if (hdr0->gtpu.ver_flags & GTPU_EXTHDR_FLAG)
+ if (hdr0->gtpu.ver_flags & (GTPU_EXTHDR_FLAG | GTPU_SEQ_FLAG))
{
// Extention header.
hdrlen += sizeof (gtpu_exthdr_t);
+
+ seq = hdr0->gtpu.ext->seq;
+ seqp = (u8 *) & seq;
+
if (hdr0->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION)
{
// PDU Session Container.
@@ -1711,7 +1920,17 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm,
offset += 1;
if (PREDICT_TRUE (shift == 0))
{
- clib_memcpy_fast (&seg0.as_u8[offset], teidp, 4);
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
+ {
+ if (seqp)
+ clib_memcpy_fast (&seg0.as_u8[offset], seqp, 2);
+ }
+ else
+ {
+ clib_memcpy_fast (&seg0.as_u8[offset], teidp, 4);
+ }
if (qfip)
{
@@ -1731,11 +1950,28 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm,
{
int idx;
- for (idx = 0; idx < 4; idx++)
+ if (gtpu_type == GTPU_TYPE_ECHO_REQUEST
+ || gtpu_type == GTPU_TYPE_ECHO_REPLY
+ || gtpu_type == GTPU_TYPE_ERROR_INDICATION)
{
- seg0.as_u8[offset + idx] |= teidp[idx] >> shift;
- seg0.as_u8[offset + idx + 1] |=
- teidp[idx] << (8 - shift);
+ if (seqp)
+ {
+ for (idx = 0; idx < 2; idx++)
+ {
+ seg0.as_u8[offset + idx] |= seqp[idx] >> shift;
+ seg0.as_u8[offset + idx + 1] |=
+ seqp[idx] << (8 - shift);
+ }
+ }
+ }
+ else
+ {
+ for (idx = 0; idx < 4; idx++)
+ {
+ seg0.as_u8[offset + idx] |= teidp[idx] >> shift;
+ seg0.as_u8[offset + idx + 1] |=
+ teidp[idx] << (8 - shift);
+ }
}
if (qfip)
@@ -1807,13 +2043,54 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm,
clib_memcpy_fast (ip6srv, sl->rewrite,
vec_len (sl->rewrite));
- ip6srv->ip.src_address = src0;
+ if (vec_len (sl->segments) > 1)
+ {
+ ip6srv->ip.src_address = src0;
- ip6srv->sr.tag =
- clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
+ ip6srv->sr.tag =
+ clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
+
+ ip6srv->sr.segments_left += 2;
+ ip6srv->sr.last_entry += 2;
- ip6srv->sr.segments_left += 2;
- ip6srv->sr.last_entry += 2;
+ ip6srv->sr.length += ((sizeof (ip6_address_t) * 2) / 8);
+
+ ip6srv->sr.segments[0] = dst0;
+ ip6srv->sr.segments[1] = seg0;
+
+ clib_memcpy_fast (&ip6srv->sr.segments[2],
+ (u8 *) (sl->rewrite +
+ sizeof (ip6_header_t) +
+ sizeof (ip6_sr_header_t)),
+ vec_len (sl->segments) *
+ sizeof (ip6_address_t));
+ }
+ else
+ {
+ ip6srv->ip.src_address = src0;
+ ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE;
+
+ ip6srv->sr.type = ROUTING_HEADER_TYPE_SR;
+ ip6srv->sr.segments_left = 2;
+ ip6srv->sr.last_entry = 1;
+ ip6srv->sr.length =
+ ((sizeof (ip6_sr_header_t) +
+ 2 * sizeof (ip6_address_t)) / 8) - 1;
+ ip6srv->sr.flags = 0;
+
+ ip6srv->sr.tag =
+ clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
+
+ ip6srv->sr.segments[0] = dst0;
+ ip6srv->sr.segments[1] = seg0;
+
+ if (vec_len (sl->segments))
+ {
+ ip6srv->sr.segments[2] = sl->segments[0];
+ ip6srv->sr.last_entry++;
+ ip6srv->sr.length += sizeof (ip6_address_t) / 8;
+ }
+ }
}
else
{
@@ -1823,12 +2100,18 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm,
ip6srv->ip.src_address = src0;
ip6srv->ip.dst_address = seg0;
+ ip6srv->sr.type = ROUTING_HEADER_TYPE_SR;
+ ip6srv->sr.segments_left = 1;
+ ip6srv->sr.last_entry = 0;
+ ip6srv->sr.length =
+ ((sizeof (ip6_sr_header_t) +
+ sizeof (ip6_address_t)) / 8) - 1;
+ ip6srv->sr.flags = 0;
+
ip6srv->sr.tag =
clib_host_to_net_u16 (srh_tagfield[gtpu_type]);
- ip6srv->sr.segments_left += 1;
- ip6srv->sr.last_entry += 1;
- ip6srv->sr.type = ROUTING_HEADER_TYPE_SR;
+ ip6srv->sr.segments[0] = dst0;
}
ip6srv->ip.payload_length =
@@ -1882,20 +2165,6 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm,
ip6srv->sr.protocol = IP_PROTOCOL_NONE;
}
- ip6srv->sr.length += ((sizeof (ip6_address_t) * 2) / 8);
- ip6srv->sr.segments[0] = dst0;
- ip6srv->sr.segments[1] = seg0;
-
- if (sl)
- {
- clib_memcpy_fast (&ip6srv->sr.segments[2],
- (u8 *) (sl->rewrite +
- sizeof (ip6_header_t) +
- sizeof (ip6_sr_header_t)),
- vec_len (sl->segments) *
- sizeof (ip6_address_t));
- }
-
good_n++;
if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&