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authorKris Michielsen <kmichiel@cisco.com>2017-06-22 13:00:20 +0200
committerDamjan Marion <dmarion.lists@gmail.com>2017-08-22 11:12:34 +0000
commit910744394f2529ecac0fa91a16237777e023c5e6 (patch)
tree7b9dc698753656ee5b1fc834b984a0449544bd5c
parent5f22f4ddded8ac41487dab3069ff8d77c3916205 (diff)
SRv6 tests
Change-Id: Ib1d2fc5a83d9d007a0468591a73881675f1bec9b Signed-off-by: Kris Michielsen <kmichiel@cisco.com>
Diffstat
-rwxr-xr-xsrc/vnet/srv6/sr_localsid.c225
-rwxr-xr-xsrc/vnet/srv6/sr_policy_rewrite.c6
-rwxr-xr-xsrc/vnet/srv6/sr_steering.c2
-rw-r--r--test/patches/scapy-2.3.3/inet6.py.patch185
-rw-r--r--test/test_srv6.py1997
-rw-r--r--test/vpp_papi_provider.py118
-rw-r--r--test/vpp_srv6.py238
7 files changed, 2739 insertions, 32 deletions
diff --git a/src/vnet/srv6/sr_localsid.c b/src/vnet/srv6/sr_localsid.c
index adeb5c03..1be68334 100755
--- a/src/vnet/srv6/sr_localsid.c
+++ b/src/vnet/srv6/sr_localsid.c
@@ -587,12 +587,11 @@ VLIB_CLI_COMMAND (clear_sr_localsid_counters_command, static) = {
*/
typedef struct
{
- u32 localsid_index;
- ip6_address_t src, out_dst;
+ ip6_address_t localsid;
+ u16 behavior;
u8 sr[256];
u8 num_segments;
u8 segments_left;
- //With SRv6 header update include flags here.
} sr_localsid_trace_t;
#define foreach_sr_localsid_error \
@@ -643,16 +642,12 @@ format_sr_localsid_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- ip6_sr_main_t *sm = &sr_main;
sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *);
- ip6_sr_localsid_t *ls =
- pool_elt_at_index (sm->localsids, t->localsid_index);
-
s =
format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address,
- &ls->localsid);
- switch (ls->behavior)
+ &t->localsid);
+ switch (t->behavior)
{
case SR_BEHAVIOR_END:
s = format (s, "\tBehavior: End\n");
@@ -686,7 +681,7 @@ format_sr_localsid_trace (u8 * s, va_list * args)
{
if (t->num_segments > 0)
{
- s = format (s, "\tSegments left: %d\n", t->num_segments);
+ s = format (s, "\tSegments left: %d\n", t->segments_left);
s = format (s, "\tSID list: [in ietf order]");
int i = 0;
for (i = 0; i < t->num_segments; i++)
@@ -882,7 +877,7 @@ end_decaps_srh_processing (vlib_node_runtime_t * node,
}
/**
- * @brief SR LocalSID graph node. Supports all default SR Endpoint variants
+ * @brief SR LocalSID graph node. Supports all default SR Endpoint variants with decaps
*/
static uword
sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
@@ -975,7 +970,97 @@ sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2);
end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3);
- //TODO: trace.
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ sr_localsid_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->num_segments = 0;
+ clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
+ sizeof (tr->localsid.as_u8));
+ tr->behavior = ls0->behavior;
+ if (ip0 == vlib_buffer_get_current (b0))
+ {
+ if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
+ && sr0->type == ROUTING_HEADER_TYPE_SR)
+ {
+ clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
+ tr->num_segments =
+ sr0->length * 8 / sizeof (ip6_address_t);
+ tr->segments_left = sr0->segments_left;
+ }
+ }
+ else
+ tr->num_segments = 0xFF;
+ }
+
+ if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ sr_localsid_trace_t *tr =
+ vlib_add_trace (vm, node, b1, sizeof (*tr));
+ tr->num_segments = 0;
+ clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
+ sizeof (tr->localsid.as_u8));
+ tr->behavior = ls1->behavior;
+ if (ip1 == vlib_buffer_get_current (b1))
+ {
+ if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
+ && sr1->type == ROUTING_HEADER_TYPE_SR)
+ {
+ clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
+ tr->num_segments =
+ sr1->length * 8 / sizeof (ip6_address_t);
+ tr->segments_left = sr1->segments_left;
+ }
+ }
+ else
+ tr->num_segments = 0xFF;
+ }
+
+ if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ sr_localsid_trace_t *tr =
+ vlib_add_trace (vm, node, b2, sizeof (*tr));
+ tr->num_segments = 0;
+ clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
+ sizeof (tr->localsid.as_u8));
+ tr->behavior = ls2->behavior;
+ if (ip2 == vlib_buffer_get_current (b2))
+ {
+ if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
+ && sr2->type == ROUTING_HEADER_TYPE_SR)
+ {
+ clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
+ tr->num_segments =
+ sr2->length * 8 / sizeof (ip6_address_t);
+ tr->segments_left = sr2->segments_left;
+ }
+ }
+ else
+ tr->num_segments = 0xFF;
+ }
+
+ if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ sr_localsid_trace_t *tr =
+ vlib_add_trace (vm, node, b3, sizeof (*tr));
+ tr->num_segments = 0;
+ clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
+ sizeof (tr->localsid.as_u8));
+ tr->behavior = ls3->behavior;
+ if (ip3 == vlib_buffer_get_current (b3))
+ {
+ if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
+ && sr3->type == ROUTING_HEADER_TYPE_SR)
+ {
+ clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
+ tr->num_segments =
+ sr3->length * 8 / sizeof (ip6_address_t);
+ tr->segments_left = sr3->segments_left;
+ }
+ }
+ else
+ tr->num_segments = 0xFF;
+ }
vlib_increment_combined_counter
(((next0 ==
@@ -1043,14 +1128,11 @@ sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
sr_localsid_trace_t *tr =
vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->num_segments = 0;
- tr->localsid_index = ls0 - sm->localsids;
-
+ clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
+ sizeof (tr->localsid.as_u8));
+ tr->behavior = ls0->behavior;
if (ip0 == vlib_buffer_get_current (b0))
{
- clib_memcpy (tr->src.as_u8, ip0->src_address.as_u8,
- sizeof (tr->src.as_u8));
- clib_memcpy (tr->out_dst.as_u8, ip0->dst_address.as_u8,
- sizeof (tr->out_dst.as_u8));
if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
&& sr0->type == ROUTING_HEADER_TYPE_SR)
{
@@ -1098,7 +1180,7 @@ VLIB_REGISTER_NODE (sr_localsid_d_node) = {
/* *INDENT-ON* */
/**
- * @brief SR LocalSID graph node. Supports all default SR Endpoint variants
+ * @brief SR LocalSID graph node. Supports all default SR Endpoint without decaps
*/
static uword
sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
@@ -1195,7 +1277,97 @@ sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
end_srh_processing (node, b3, ip3, sr3, ls3, &next3, ls3->end_psp,
prev3);
- //TODO: proper trace.
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ sr_localsid_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->num_segments = 0;
+ clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
+ sizeof (tr->localsid.as_u8));
+ tr->behavior = ls0->behavior;
+ if (ip0 == vlib_buffer_get_current (b0))
+ {
+ if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
+ && sr0->type == ROUTING_HEADER_TYPE_SR)
+ {
+ clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
+ tr->num_segments =
+ sr0->length * 8 / sizeof (ip6_address_t);
+ tr->segments_left = sr0->segments_left;
+ }
+ }
+ else
+ tr->num_segments = 0xFF;
+ }
+
+ if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ sr_localsid_trace_t *tr =
+ vlib_add_trace (vm, node, b1, sizeof (*tr));
+ tr->num_segments = 0;
+ clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
+ sizeof (tr->localsid.as_u8));
+ tr->behavior = ls1->behavior;
+ if (ip1 == vlib_buffer_get_current (b1))
+ {
+ if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
+ && sr1->type == ROUTING_HEADER_TYPE_SR)
+ {
+ clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
+ tr->num_segments =
+ sr1->length * 8 / sizeof (ip6_address_t);
+ tr->segments_left = sr1->segments_left;
+ }
+ }
+ else
+ tr->num_segments = 0xFF;
+ }
+
+ if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ sr_localsid_trace_t *tr =
+ vlib_add_trace (vm, node, b2, sizeof (*tr));
+ tr->num_segments = 0;
+ clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
+ sizeof (tr->localsid.as_u8));
+ tr->behavior = ls2->behavior;
+ if (ip2 == vlib_buffer_get_current (b2))
+ {
+ if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
+ && sr2->type == ROUTING_HEADER_TYPE_SR)
+ {
+ clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
+ tr->num_segments =
+ sr2->length * 8 / sizeof (ip6_address_t);
+ tr->segments_left = sr2->segments_left;
+ }
+ }
+ else
+ tr->num_segments = 0xFF;
+ }
+
+ if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ sr_localsid_trace_t *tr =
+ vlib_add_trace (vm, node, b3, sizeof (*tr));
+ tr->num_segments = 0;
+ clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
+ sizeof (tr->localsid.as_u8));
+ tr->behavior = ls3->behavior;
+ if (ip3 == vlib_buffer_get_current (b3))
+ {
+ if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
+ && sr3->type == ROUTING_HEADER_TYPE_SR)
+ {
+ clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
+ tr->num_segments =
+ sr3->length * 8 / sizeof (ip6_address_t);
+ tr->segments_left = sr3->segments_left;
+ }
+ }
+ else
+ tr->num_segments = 0xFF;
+ }
vlib_increment_combined_counter
(((next0 ==
@@ -1262,14 +1434,11 @@ sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
sr_localsid_trace_t *tr =
vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->num_segments = 0;
- tr->localsid_index = ls0 - sm->localsids;
-
+ clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
+ sizeof (tr->localsid.as_u8));
+ tr->behavior = ls0->behavior;
if (ip0 == vlib_buffer_get_current (b0))
{
- clib_memcpy (tr->src.as_u8, ip0->src_address.as_u8,
- sizeof (tr->src.as_u8));
- clib_memcpy (tr->out_dst.as_u8, ip0->dst_address.as_u8,
- sizeof (tr->out_dst.as_u8));
if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
&& sr0->type == ROUTING_HEADER_TYPE_SR)
{
@@ -1280,9 +1449,7 @@ sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
}
}
else
- {
- tr->num_segments = 0xFF;
- }
+ tr->num_segments = 0xFF;
}
vlib_increment_combined_counter
diff --git a/src/vnet/srv6/sr_policy_rewrite.c b/src/vnet/srv6/sr_policy_rewrite.c
index 7a37a66b..f427bbf3 100755
--- a/src/vnet/srv6/sr_policy_rewrite.c
+++ b/src/vnet/srv6/sr_policy_rewrite.c
@@ -672,7 +672,8 @@ sr_policy_del (ip6_address_t * bsid, u32 index)
segment_list = pool_elt_at_index (sm->sid_lists, *sl_index);
vec_free (segment_list->segments);
vec_free (segment_list->rewrite);
- vec_free (segment_list->rewrite_bsid);
+ if (!sr_policy->is_encap)
+ vec_free (segment_list->rewrite_bsid);
pool_put_index (sm->sid_lists, *sl_index);
}
@@ -766,7 +767,8 @@ sr_policy_mod (ip6_address_t * bsid, u32 index, u32 fib_table,
segment_list = pool_elt_at_index (sm->sid_lists, sl_index);
vec_free (segment_list->segments);
vec_free (segment_list->rewrite);
- vec_free (segment_list->rewrite_bsid);
+ if (!sr_policy->is_encap)
+ vec_free (segment_list->rewrite_bsid);
pool_put_index (sm->sid_lists, sl_index);
vec_del1 (sr_policy->segments_lists,
sl_index_iterate - sr_policy->segments_lists);
diff --git a/src/vnet/srv6/sr_steering.c b/src/vnet/srv6/sr_steering.c
index 704adaa7..57fe21f6 100755
--- a/src/vnet/srv6/sr_steering.c
+++ b/src/vnet/srv6/sr_steering.c
@@ -165,7 +165,7 @@ sr_steering_policy (int is_del, ip6_address_t * bsid, u32 sr_policy_index,
sm->fib_table_ip4 = (u32) ~ 0;
}
- return 1;
+ return 0;
}
else /* It means user requested to update an existing SR steering policy */
{
diff --git a/test/patches/scapy-2.3.3/inet6.py.patch b/test/patches/scapy-2.3.3/inet6.py.patch
new file mode 100644
index 00000000..f98e7091
--- /dev/null
+++ b/test/patches/scapy-2.3.3/inet6.py.patch
@@ -0,0 +1,185 @@
+diff --git a/scapy/layers/inet6.py b/scapy/layers/inet6.py
+--- a/scapy/layers/inet6.py 2017-06-01 14:04:18.160881034 +0200
++++ b/scapy/layers/inet6.py 2017-06-02 09:08:40.133800208 +0200
+@@ -369,6 +369,8 @@
+ return Raw
+ elif self.nh == 135 and len(p) > 3: # Mobile IPv6
+ return _mip6_mhtype2cls.get(ord(p[2]), MIP6MH_Generic)
++ elif self.nh == 43 and ord(p[2]) == 4: # Segment Routing header
++ return IPv6ExtHdrSegmentRouting
+ else:
+ return get_cls(ipv6nhcls.get(self.nh,"Raw"), "Raw")
+
+@@ -430,6 +432,14 @@
+ sd = strxor(sd, a)
+ sd = inet_ntop(socket.AF_INET6, sd)
+
++ if self.nh == 43 and isinstance(self.payload, IPv6ExtHdrSegmentRouting):
++ # With segment routing header (rh == 4), the destination is
++ # the first address of the IPv6 addresses list
++ try:
++ sd = self.addresses[0]
++ except IndexError:
++ sd = self.dst
++
+ if self.nh == 44 and isinstance(self.payload, IPv6ExtHdrFragment):
+ nh = self.payload.nh
+
+@@ -489,6 +499,8 @@
+ return self.payload.answers(other.payload.payload)
+ elif other.nh == 43 and isinstance(other.payload, IPv6ExtHdrRouting):
+ return self.payload.answers(other.payload.payload) # Buggy if self.payload is a IPv6ExtHdrRouting
++ elif other.nh == 43 and isinstance(other.payload, IPv6ExtHdrSegmentRouting):
++ return self.payload.answers(other.payload.payload) # Buggy if self.payload is a IPv6ExtHdrRouting
+ elif other.nh == 60 and isinstance(other.payload, IPv6ExtHdrDestOpt):
+ return self.payload.payload.answers(other.payload.payload)
+ elif self.nh == 60 and isinstance(self.payload, IPv6ExtHdrDestOpt): # BU in reply to BRR, for instance
+@@ -919,6 +931,148 @@
+ pkt = pkt[:3]+struct.pack("B", len(self.addresses))+pkt[4:]
+ return _IPv6ExtHdr.post_build(self, pkt, pay)
+
++######################### Segment Routing Header ############################
++
++# This implementation is based on draft 06, available at:
++# https://tools.ietf.org/html/draft-ietf-6man-segment-routing-header-06
++
++class IPv6ExtHdrSegmentRoutingTLV(Packet):
++ name = "IPv6 Option Header Segment Routing - Generic TLV"
++ fields_desc = [ ByteField("type", 0),
++ ByteField("len", 0),
++ ByteField("reserved", 0),
++ ByteField("flags", 0),
++ StrLenField("value", "", length_from=lambda pkt: pkt.len) ]
++
++ def extract_padding(self, p):
++ return "",p
++
++ registered_sr_tlv = {}
++ @classmethod
++ def register_variant(cls):
++ cls.registered_sr_tlv[cls.type.default] = cls
++
++ @classmethod
++ def dispatch_hook(cls, pkt=None, *args, **kargs):
++ if pkt:
++ tmp_type = ord(pkt[0])
++ return cls.registered_sr_tlv.get(tmp_type, cls)
++ return cls
++
++
++class IPv6ExtHdrSegmentRoutingTLVIngressNode(IPv6ExtHdrSegmentRoutingTLV):
++ name = "IPv6 Option Header Segment Routing - Ingress Node TLV"
++ fields_desc = [ ByteField("type", 1),
++ ByteField("len", 18),
++ ByteField("reserved", 0),
++ ByteField("flags", 0),
++ IP6Field("ingress_node", "::1") ]
++
++
++class IPv6ExtHdrSegmentRoutingTLVEgressNode(IPv6ExtHdrSegmentRoutingTLV):
++ name = "IPv6 Option Header Segment Routing - Egress Node TLV"
++ fields_desc = [ ByteField("type", 2),
++ ByteField("len", 18),
++ ByteField("reserved", 0),
++ ByteField("flags", 0),
++ IP6Field("egress_node", "::1") ]
++
++
++class IPv6ExtHdrSegmentRoutingTLVPadding(IPv6ExtHdrSegmentRoutingTLV):
++ name = "IPv6 Option Header Segment Routing - Padding TLV"
++ fields_desc = [ ByteField("type", 4),
++ FieldLenField("len", None, length_of="padding", fmt="B"),
++ StrLenField("padding", b"\x00", length_from=lambda pkt: pkt.len) ]
++
++
++class IPv6ExtHdrSegmentRouting(_IPv6ExtHdr):
++ # 0 1 2 3
++ # 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
++ #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++ #| Next Header | Hdr Ext Len | Routing Type | Segments Left |
++ #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++ #| Last Entry | Flags | Tag |
++ #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++ #| |
++ #| Segment List[0] (128 bits IPv6 address) |
++ #| |
++ #| |
++ #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++ #| |
++ #| |
++ # ...
++ #| |
++ #| |
++ #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++ #| |
++ #| Segment List[n] (128 bits IPv6 address) |
++ #| |
++ #| |
++ #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++ #// //
++ #// Optional Type Length Value objects (variable) //
++ #// //
++ #+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
++ #
++ # 0 1 2 3 4 5 6 7
++ # +-+-+-+-+-+-+-+-+
++ # |U|P|O|A|H| U |
++ # +-+-+-+-+-+-+-+-+
++
++ name = "IPv6 Segment Routing Extension Header"
++ fields_desc = [ ByteEnumField("nh", 59, ipv6nh),
++ ByteField("len", None),
++ ByteField("type", 4),
++ ByteField("segleft", None),
++ ByteField("lastentry", None),
++ BitField("unused1", 0, 1),
++ BitField("protected", 0, 1),
++ BitField("oam", 0, 1),
++ BitField("alert", 0, 1),
++ BitField("hmac", 0, 1),
++ BitField("unused2", 0, 3),
++ ShortField("tag", 0),
++ IP6ListField("addresses", ["::1"],
++ count_from=lambda pkt: pkt.lastentry+1),
++ PacketListField("tlv_objects", [], IPv6ExtHdrSegmentRoutingTLV,
++ length_from=lambda pkt: 8*pkt.len - 16*(pkt.lastentry+1)) ]
++
++ overload_fields = { IPv6: { "nh": 43 } }
++
++ def post_build(self, pkt, pay):
++
++ if self.len is None:
++
++ # The extension must be align on 8 bytes
++ tmp_mod = (len(pkt) - 8) % 8
++ if tmp_mod == 1:
++ warning("IPv6ExtHdrSegmentRouting(): can't pad 1 byte !")
++ elif tmp_mod >= 2:
++ #Add the padding extension
++ tmp_pad = b"\x00" * (tmp_mod-2)
++ tlv = IPv6ExtHdrSegmentRoutingTLVPadding(padding=tmp_pad)
++ pkt += str(tlv)
++
++ tmp_len = (len(pkt) - 8) / 8
++ pkt = pkt[:1] + struct.pack("B", tmp_len)+ pkt[2:]
++
++ if self.segleft is None:
++ tmp_len = len(self.addresses)
++ if tmp_len:
++ tmp_len -= 1
++ pkt = pkt[:3] + struct.pack("B", tmp_len) + pkt[4:]
++
++ if self.lastentry is None:
++ #km - changed to contain n-1
++ tmp_len = len(self.addresses)
++ if tmp_len:
++ tmp_len -= 1
++ #pkt = pkt[:4] + struct.pack("B", len(self.addresses)) + pkt[5:]
++ pkt = pkt[:4] + struct.pack("B", tmp_len) + pkt[5:]
++
++ return _IPv6ExtHdr.post_build(self, pkt, pay)
++
++
+ ########################### Fragmentation Header ############################
+
+ class IPv6ExtHdrFragment(_IPv6ExtHdr):
diff --git a/test/test_srv6.py b/test/test_srv6.py
new file mode 100644
index 00000000..a31b30eb
--- /dev/null
+++ b/test/test_srv6.py
@@ -0,0 +1,1997 @@
+#!/usr/bin/env python
+
+import unittest
+from socket import AF_INET6
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
+from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
+ SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, Dot1Q
+from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
+from scapy.layers.inet import IP, UDP
+
+from scapy.utils import inet_pton, inet_ntop
+
+from util import ppp
+
+
+class TestSRv6(VppTestCase):
+ """ SRv6 Test Case """
+
+ @classmethod
+ def setUpClass(self):
+ super(TestSRv6, self).setUpClass()
+
+ def setUp(self):
+ """ Perform test setup before each test case.
+ """
+ super(TestSRv6, self).setUp()
+
+ # packet sizes, inclusive L2 overhead
+ self.pg_packet_sizes = [64, 512, 1518, 9018]
+
+ # reset packet_infos
+ self.reset_packet_infos()
+
+ def tearDown(self):
+ """ Clean up test setup after each test case.
+ """
+ self.teardown_interfaces()
+
+ super(TestSRv6, self).tearDown()
+
+ def configure_interface(self,
+ interface,
+ ipv6=False, ipv4=False,
+ ipv6_table_id=0, ipv4_table_id=0):
+ """ Configure interface.
+ :param ipv6: configure IPv6 on interface
+ :param ipv4: configure IPv4 on interface
+ :param ipv6_table_id: FIB table_id for IPv6
+ :param ipv4_table_id: FIB table_id for IPv4
+ """
+ self.logger.debug("Configuring interface %s" % (interface.name))
+ if ipv6:
+ self.logger.debug("Configuring IPv6")
+ interface.set_table_ip6(ipv6_table_id)
+ interface.config_ip6()
+ interface.resolve_ndp(timeout=5)
+ if ipv4:
+ self.logger.debug("Configuring IPv4")
+ interface.set_table_ip4(ipv4_table_id)
+ interface.config_ip4()
+ interface.resolve_arp()
+ interface.admin_up()
+
+ def setup_interfaces(self, ipv6=[], ipv4=[],
+ ipv6_table_id=[], ipv4_table_id=[]):
+ """ Create and configure interfaces.
+
+ :param ipv6: list of interface IPv6 capabilities
+ :param ipv4: list of interface IPv4 capabilities
+ :param ipv6_table_id: list of intf IPv6 FIB table_ids
+ :param ipv4_table_id: list of intf IPv4 FIB table_ids
+ :returns: List of created interfaces.
+ """
+ # how many interfaces?
+ if len(ipv6):
+ count = len(ipv6)
+ else:
+ count = len(ipv4)
+ self.logger.debug("Creating and configuring %d interfaces" % (count))
+
+ # fill up ipv6 and ipv4 lists if needed
+ # not enabled (False) is the default
+ if len(ipv6) < count:
+ ipv6 += (count - len(ipv6)) * [False]
+ if len(ipv4) < count:
+ ipv4 += (count - len(ipv4)) * [False]
+
+ # fill up table_id lists if needed
+ # table_id 0 (global) is the default
+ if len(ipv6_table_id) < count:
+ ipv6_table_id += (count - len(ipv6_table_id)) * [0]
+ if len(ipv4_table_id) < count:
+ ipv4_table_id += (count - len(ipv4_table_id)) * [0]
+
+ # create 'count' pg interfaces
+ self.create_pg_interfaces(range(count))
+
+ # setup all interfaces
+ for i in range(count):
+ intf = self.pg_interfaces[i]
+ self.configure_interface(intf,
+ ipv6[i], ipv4[i],
+ ipv6_table_id[i], ipv4_table_id[i])
+
+ if any(ipv6):
+ self.logger.debug(self.vapi.cli("show ip6 neighbors"))
+ if any(ipv4):
+ self.logger.debug(self.vapi.cli("show ip arp"))
+ self.logger.debug(self.vapi.cli("show interface"))
+ self.logger.debug(self.vapi.cli("show hardware"))
+
+ return self.pg_interfaces
+
+ def teardown_interfaces(self):
+ """ Unconfigure and bring down interface.
+ """
+ self.logger.debug("Tearing down interfaces")
+ # tear down all interfaces
+ # AFAIK they cannot be deleted
+ for i in self.pg_interfaces:
+ self.logger.debug("Tear down interface %s" % (i.name))
+ i.admin_down()
+ i.unconfig()
+
+ def test_SRv6_T_Encaps(self):
+ """ Test SRv6 Transit.Encaps behavior for IPv6.
+ """
+ # send traffic to one destination interface
+ # source and destination are IPv6 only
+ self.setup_interfaces(ipv6=[True, True])
+
+ # configure FIB entries
+ route = VppIpRoute(self, "a4::", 64,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ route.add_vpp_config()
+
+ # configure encaps IPv6 source address
+ # needs to be done before SR Policy config
+ # TODO: API?
+ self.vapi.cli("set sr encaps source addr a3::")
+
+ bsid = 'a3::9999:1'
+ # configure SRv6 Policy
+ # Note: segment list order: first -> last
+ sr_policy = VppSRv6Policy(
+ self, bsid=bsid,
+ is_encap=1,
+ sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+ weight=1, fib_table=0,
+ segments=['a4::', 'a5::', 'a6::c7'],
+ source='a3::')
+ sr_policy.add_vpp_config()
+ self.sr_policy = sr_policy
+
+ # log the sr policies
+ self.logger.info(self.vapi.cli("show sr policies"))
+
+ # steer IPv6 traffic to a7::/64 into SRv6 Policy
+ # use the bsid of the above self.sr_policy
+ pol_steering = VppSRv6Steering(
+ self,
+ bsid=self.sr_policy.bsid,
+ prefix="a7::", mask_width=64,
+ traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
+ sr_policy_index=0, table_id=0,
+ sw_if_index=0)
+ pol_steering.add_vpp_config()
+
+ # log the sr steering policies
+ self.logger.info(self.vapi.cli("show sr steering policies"))
+
+ # create packets
+ count = len(self.pg_packet_sizes)
+ dst_inner = 'a7::1234'
+ pkts = []
+
+ # create IPv6 packets without SRH
+ packet_header = self.create_packet_header_IPv6(dst_inner)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # create IPv6 packets with SRH
+ # packets with segments-left 1, active segment a7::
+ packet_header = self.create_packet_header_IPv6_SRH(
+ sidlist=['a8::', 'a7::', 'a6::'],
+ segleft=1)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # create IPv6 packets with SRH and IPv6
+ # packets with segments-left 1, active segment a7::
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a8::', 'a7::', 'a6::'],
+ segleft=1)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_T_Encaps)
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SR steering
+ pol_steering.remove_vpp_config()
+ self.logger.info(self.vapi.cli("show sr steering policies"))
+
+ # remove SR Policies
+ self.sr_policy.remove_vpp_config()
+ self.logger.info(self.vapi.cli("show sr policies"))
+
+ # remove FIB entries
+ # done by tearDown
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_T_Insert(self):
+ """ Test SRv6 Transit.Insert behavior (IPv6 only).
+ """
+ # send traffic to one destination interface
+ # source and destination are IPv6 only
+ self.setup_interfaces(ipv6=[True, True])
+
+ # configure FIB entries
+ route = VppIpRoute(self, "a4::", 64,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ route.add_vpp_config()
+
+ # configure encaps IPv6 source address
+ # needs to be done before SR Policy config
+ # TODO: API?
+ self.vapi.cli("set sr encaps source addr a3::")
+
+ bsid = 'a3::9999:1'
+ # configure SRv6 Policy
+ # Note: segment list order: first -> last
+ sr_policy = VppSRv6Policy(
+ self, bsid=bsid,
+ is_encap=0,
+ sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+ weight=1, fib_table=0,
+ segments=['a4::', 'a5::', 'a6::c7'],
+ source='a3::')
+ sr_policy.add_vpp_config()
+ self.sr_policy = sr_policy
+
+ # log the sr policies
+ self.logger.info(self.vapi.cli("show sr policies"))
+
+ # steer IPv6 traffic to a7::/64 into SRv6 Policy
+ # use the bsid of the above self.sr_policy
+ pol_steering = VppSRv6Steering(
+ self,
+ bsid=self.sr_policy.bsid,
+ prefix="a7::", mask_width=64,
+ traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
+ sr_policy_index=0, table_id=0,
+ sw_if_index=0)
+ pol_steering.add_vpp_config()
+
+ # log the sr steering policies
+ self.logger.info(self.vapi.cli("show sr steering policies"))
+
+ # create packets
+ count = len(self.pg_packet_sizes)
+ dst_inner = 'a7::1234'
+ pkts = []
+
+ # create IPv6 packets without SRH
+ packet_header = self.create_packet_header_IPv6(dst_inner)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # create IPv6 packets with SRH
+ # packets with segments-left 1, active segment a7::
+ packet_header = self.create_packet_header_IPv6_SRH(
+ sidlist=['a8::', 'a7::', 'a6::'],
+ segleft=1)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_T_Insert)
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SR steering
+ pol_steering.remove_vpp_config()
+ self.logger.info(self.vapi.cli("show sr steering policies"))
+
+ # remove SR Policies
+ self.sr_policy.remove_vpp_config()
+ self.logger.info(self.vapi.cli("show sr policies"))
+
+ # remove FIB entries
+ # done by tearDown
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_T_Encaps_IPv4(self):
+ """ Test SRv6 Transit.Encaps behavior for IPv4.
+ """
+ # send traffic to one destination interface
+ # source interface is IPv4 only
+ # destination interface is IPv6 only
+ self.setup_interfaces(ipv6=[False, True], ipv4=[True, False])
+
+ # configure FIB entries
+ route = VppIpRoute(self, "a4::", 64,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ route.add_vpp_config()
+
+ # configure encaps IPv6 source address
+ # needs to be done before SR Policy config
+ # TODO: API?
+ self.vapi.cli("set sr encaps source addr a3::")
+
+ bsid = 'a3::9999:1'
+ # configure SRv6 Policy
+ # Note: segment list order: first -> last
+ sr_policy = VppSRv6Policy(
+ self, bsid=bsid,
+ is_encap=1,
+ sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+ weight=1, fib_table=0,
+ segments=['a4::', 'a5::', 'a6::c7'],
+ source='a3::')
+ sr_policy.add_vpp_config()
+ self.sr_policy = sr_policy
+
+ # log the sr policies
+ self.logger.info(self.vapi.cli("show sr policies"))
+
+ # steer IPv4 traffic to 7.1.1.0/24 into SRv6 Policy
+ # use the bsid of the above self.sr_policy
+ pol_steering = VppSRv6Steering(
+ self,
+ bsid=self.sr_policy.bsid,
+ prefix="7.1.1.0", mask_width=24,
+ traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV4,
+ sr_policy_index=0, table_id=0,
+ sw_if_index=0)
+ pol_steering.add_vpp_config()
+
+ # log the sr steering policies
+ self.logger.info(self.vapi.cli("show sr steering policies"))
+
+ # create packets
+ count = len(self.pg_packet_sizes)
+ dst_inner = '7.1.1.123'
+ pkts = []
+
+ # create IPv4 packets
+ packet_header = self.create_packet_header_IPv4(dst_inner)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_T_Encaps_IPv4)
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SR steering
+ pol_steering.remove_vpp_config()
+ self.logger.info(self.vapi.cli("show sr steering policies"))
+
+ # remove SR Policies
+ self.sr_policy.remove_vpp_config()
+ self.logger.info(self.vapi.cli("show sr policies"))
+
+ # remove FIB entries
+ # done by tearDown
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ @unittest.skip("VPP crashes after running this test")
+ def test_SRv6_T_Encaps_L2(self):
+ """ Test SRv6 Transit.Encaps behavior for L2.
+ """
+ # send traffic to one destination interface
+ # source interface is IPv4 only TODO?
+ # destination interface is IPv6 only
+ self.setup_interfaces(ipv6=[False, True], ipv4=[False, False])
+
+ # configure FIB entries
+ route = VppIpRoute(self, "a4::", 64,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ route.add_vpp_config()
+
+ # configure encaps IPv6 source address
+ # needs to be done before SR Policy config
+ # TODO: API?
+ self.vapi.cli("set sr encaps source addr a3::")
+
+ bsid = 'a3::9999:1'
+ # configure SRv6 Policy
+ # Note: segment list order: first -> last
+ sr_policy = VppSRv6Policy(
+ self, bsid=bsid,
+ is_encap=1,
+ sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
+ weight=1, fib_table=0,
+ segments=['a4::', 'a5::', 'a6::c7'],
+ source='a3::')
+ sr_policy.add_vpp_config()
+ self.sr_policy = sr_policy
+
+ # log the sr policies
+ self.logger.info(self.vapi.cli("show sr policies"))
+
+ # steer L2 traffic into SRv6 Policy
+ # use the bsid of the above self.sr_policy
+ pol_steering = VppSRv6Steering(
+ self,
+ bsid=self.sr_policy.bsid,
+ prefix="::", mask_width=0,
+ traffic_type=SRv6PolicySteeringTypes.SR_STEER_L2,
+ sr_policy_index=0, table_id=0,
+ sw_if_index=self.pg0.sw_if_index)
+ pol_steering.add_vpp_config()
+
+ # log the sr steering policies
+ self.logger.info(self.vapi.cli("show sr steering policies"))
+
+ # create packets
+ count = len(self.pg_packet_sizes)
+ pkts = []
+
+ # create L2 packets without dot1q header
+ packet_header = self.create_packet_header_L2()
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # create L2 packets with dot1q header
+ packet_header = self.create_packet_header_L2(vlan=123)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_T_Encaps_L2)
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SR steering
+ pol_steering.remove_vpp_config()
+ self.logger.info(self.vapi.cli("show sr steering policies"))
+
+ # remove SR Policies
+ self.sr_policy.remove_vpp_config()
+ self.logger.info(self.vapi.cli("show sr policies"))
+
+ # remove FIB entries
+ # done by tearDown
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_End(self):
+ """ Test SRv6 End (without PSP) behavior.
+ """
+ # send traffic to one destination interface
+ # source and destination interfaces are IPv6 only
+ self.setup_interfaces(ipv6=[True, True])
+
+ # configure FIB entries
+ route = VppIpRoute(self, "a4::", 64,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ route.add_vpp_config()
+
+ # configure SRv6 localSID End without PSP behavior
+ localsid = VppSRv6LocalSID(
+ self, localsid_addr='A3::0',
+ behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
+ nh_addr='::',
+ end_psp=0,
+ sw_if_index=0,
+ vlan_index=0,
+ fib_table=0)
+ localsid.add_vpp_config()
+ # log the localsids
+ self.logger.debug(self.vapi.cli("show sr localsid"))
+
+ # create IPv6 packets with SRH (SL=2, SL=1, SL=0)
+ # send one packet per SL value per packet size
+ # SL=0 packet with localSID End with USP needs 2nd SRH
+ count = len(self.pg_packet_sizes)
+ dst_inner = 'a4::1234'
+ pkts = []
+
+ # packets with segments-left 2, active segment a3::
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a5::', 'a4::', 'a3::'],
+ segleft=2)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets with segments-left 1, active segment a3::
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a4::', 'a3::', 'a2::'],
+ segleft=1)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # TODO: test behavior with SL=0 packet (needs 2*SRH?)
+
+ # send packets and verify received packets
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_End)
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SRv6 localSIDs
+ localsid.remove_vpp_config()
+
+ # remove FIB entries
+ # done by tearDown
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_End_with_PSP(self):
+ """ Test SRv6 End with PSP behavior.
+ """
+ # send traffic to one destination interface
+ # source and destination interfaces are IPv6 only
+ self.setup_interfaces(ipv6=[True, True])
+
+ # configure FIB entries
+ route = VppIpRoute(self, "a4::", 64,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ route.add_vpp_config()
+
+ # configure SRv6 localSID End with PSP behavior
+ localsid = VppSRv6LocalSID(
+ self, localsid_addr='A3::0',
+ behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
+ nh_addr='::',
+ end_psp=1,
+ sw_if_index=0,
+ vlan_index=0,
+ fib_table=0)
+ localsid.add_vpp_config()
+ # log the localsids
+ self.logger.debug(self.vapi.cli("show sr localsid"))
+
+ # create IPv6 packets with SRH (SL=2, SL=1)
+ # send one packet per SL value per packet size
+ # SL=0 packet with localSID End with PSP is dropped
+ count = len(self.pg_packet_sizes)
+ dst_inner = 'a4::1234'
+ pkts = []
+
+ # packets with segments-left 2, active segment a3::
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a5::', 'a4::', 'a3::'],
+ segleft=2)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets with segments-left 1, active segment a3::
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a4::', 'a3::', 'a2::'],
+ segleft=1)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_End_PSP)
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SRv6 localSIDs
+ localsid.remove_vpp_config()
+
+ # remove FIB entries
+ # done by tearDown
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_End_X(self):
+ """ Test SRv6 End.X (without PSP) behavior.
+ """
+ # create three interfaces (1 source, 2 destinations)
+ # source and destination interfaces are IPv6 only
+ self.setup_interfaces(ipv6=[True, True, True])
+
+ # configure FIB entries
+ # a4::/64 via pg1 and pg2
+ route = VppIpRoute(self, "a4::", 64,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6),
+ VppRoutePath(self.pg2.remote_ip6,
+ self.pg2.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ route.add_vpp_config()
+ self.logger.debug(self.vapi.cli("show ip6 fib"))
+
+ # configure SRv6 localSID End.X without PSP behavior
+ # End.X points to interface pg1
+ localsid = VppSRv6LocalSID(
+ self, localsid_addr='A3::C4',
+ behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
+ nh_addr=self.pg1.remote_ip6,
+ end_psp=0,
+ sw_if_index=self.pg1.sw_if_index,
+ vlan_index=0,
+ fib_table=0)
+ localsid.add_vpp_config()
+ # log the localsids
+ self.logger.debug(self.vapi.cli("show sr localsid"))
+
+ # create IPv6 packets with SRH (SL=2, SL=1)
+ # send one packet per SL value per packet size
+ # SL=0 packet with localSID End with PSP is dropped
+ count = len(self.pg_packet_sizes)
+ dst_inner = 'a4::1234'
+ pkts = []
+
+ # packets with segments-left 2, active segment a3::c4
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a5::', 'a4::', 'a3::c4'],
+ segleft=2)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets with segments-left 1, active segment a3::c4
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a4::', 'a3::c4', 'a2::'],
+ segleft=1)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ # using same comparison function as End (no PSP)
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_End)
+
+ # assert nothing was received on the other interface (pg2)
+ self.pg2.assert_nothing_captured("mis-directed packet(s)")
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SRv6 localSIDs
+ localsid.remove_vpp_config()
+
+ # remove FIB entries
+ # done by tearDown
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_End_X_with_PSP(self):
+ """ Test SRv6 End.X with PSP behavior.
+ """
+ # create three interfaces (1 source, 2 destinations)
+ # source and destination interfaces are IPv6 only
+ self.setup_interfaces(ipv6=[True, True, True])
+
+ # configure FIB entries
+ # a4::/64 via pg1 and pg2
+ route = VppIpRoute(self, "a4::", 64,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6),
+ VppRoutePath(self.pg2.remote_ip6,
+ self.pg2.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ route.add_vpp_config()
+
+ # configure SRv6 localSID End with PSP behavior
+ localsid = VppSRv6LocalSID(
+ self, localsid_addr='A3::C4',
+ behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
+ nh_addr=self.pg1.remote_ip6,
+ end_psp=1,
+ sw_if_index=self.pg1.sw_if_index,
+ vlan_index=0,
+ fib_table=0)
+ localsid.add_vpp_config()
+ # log the localsids
+ self.logger.debug(self.vapi.cli("show sr localsid"))
+
+ # create IPv6 packets with SRH (SL=2, SL=1)
+ # send one packet per SL value per packet size
+ # SL=0 packet with localSID End with PSP is dropped
+ count = len(self.pg_packet_sizes)
+ dst_inner = 'a4::1234'
+ pkts = []
+
+ # packets with segments-left 2, active segment a3::
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a5::', 'a4::', 'a3::c4'],
+ segleft=2)
+ # create traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets with segments-left 1, active segment a3::
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a4::', 'a3::c4', 'a2::'],
+ segleft=1)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ # using same comparison function as End with PSP
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_End_PSP)
+
+ # assert nothing was received on the other interface (pg2)
+ self.pg2.assert_nothing_captured("mis-directed packet(s)")
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SRv6 localSIDs
+ localsid.remove_vpp_config()
+
+ # remove FIB entries
+ # done by tearDown
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_End_DX6(self):
+ """ Test SRv6 End.DX6 behavior.
+ """
+ # send traffic to one destination interface
+ # source and destination interfaces are IPv6 only
+ self.setup_interfaces(ipv6=[True, True])
+
+ # configure SRv6 localSID End.DX6 behavior
+ localsid = VppSRv6LocalSID(
+ self, localsid_addr='a3::c4',
+ behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX6,
+ nh_addr=self.pg1.remote_ip6,
+ end_psp=0,
+ sw_if_index=self.pg1.sw_if_index,
+ vlan_index=0,
+ fib_table=0)
+ localsid.add_vpp_config()
+ # log the localsids
+ self.logger.debug(self.vapi.cli("show sr localsid"))
+
+ # create IPv6 packets with SRH (SL=0)
+ # send one packet per packet size
+ count = len(self.pg_packet_sizes)
+ dst_inner = 'a4::1234' # inner header destination address
+ pkts = []
+
+ # packets with SRH, segments-left 0, active segment a3::c4
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a3::c4', 'a2::', 'a1::'],
+ segleft=0)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets without SRH, IPv6 in IPv6
+ # outer IPv6 dest addr is the localsid End.DX6
+ packet_header = self.create_packet_header_IPv6_IPv6(
+ dst_inner,
+ dst_outer='a3::c4')
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_End_DX6)
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SRv6 localSIDs
+ localsid.remove_vpp_config()
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_End_DT6(self):
+ """ Test SRv6 End.DT6 behavior.
+ """
+ # create three interfaces (1 source, 2 destinations)
+ # all interfaces are IPv6 only
+ # source interface in global FIB (0)
+ # destination interfaces in global and vrf
+ vrf_1 = 1
+ self.setup_interfaces(ipv6=[True, True, True],
+ ipv6_table_id=[0, 0, vrf_1])
+
+ # configure FIB entries
+ # a4::/64 is reachable
+ # via pg1 in table 0 (global)
+ # and via pg2 in table vrf_1
+ route0 = VppIpRoute(self, "a4::", 64,
+ [VppRoutePath(self.pg1.remote_ip6,
+ self.pg1.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6,
+ nh_table_id=0)],
+ table_id=0,
+ is_ip6=1)
+ route0.add_vpp_config()
+ route1 = VppIpRoute(self, "a4::", 64,
+ [VppRoutePath(self.pg2.remote_ip6,
+ self.pg2.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6,
+ nh_table_id=vrf_1)],
+ table_id=vrf_1,
+ is_ip6=1)
+ route1.add_vpp_config()
+ self.logger.debug(self.vapi.cli("show ip6 fib"))
+
+ # configure SRv6 localSID End.DT6 behavior
+ # Note:
+ # fib_table: where the localsid is installed
+ # sw_if_index: in T-variants of localsid this is the vrf table_id
+ localsid = VppSRv6LocalSID(
+ self, localsid_addr='a3::c4',
+ behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT6,
+ nh_addr='::',
+ end_psp=0,
+ sw_if_index=vrf_1,
+ vlan_index=0,
+ fib_table=0)
+ localsid.add_vpp_config()
+ # log the localsids
+ self.logger.debug(self.vapi.cli("show sr localsid"))
+
+ # create IPv6 packets with SRH (SL=0)
+ # send one packet per packet size
+ count = len(self.pg_packet_sizes)
+ dst_inner = 'a4::1234' # inner header destination address
+ pkts = []
+
+ # packets with SRH, segments-left 0, active segment a3::c4
+ packet_header = self.create_packet_header_IPv6_SRH_IPv6(
+ dst_inner,
+ sidlist=['a3::c4', 'a2::', 'a1::'],
+ segleft=0)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets without SRH, IPv6 in IPv6
+ # outer IPv6 dest addr is the localsid End.DT6
+ packet_header = self.create_packet_header_IPv6_IPv6(
+ dst_inner,
+ dst_outer='a3::c4')
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ # using same comparison function as End.DX6
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
+ self.compare_rx_tx_packet_End_DX6)
+
+ # assert nothing was received on the other interface (pg2)
+ self.pg1.assert_nothing_captured("mis-directed packet(s)")
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SRv6 localSIDs
+ localsid.remove_vpp_config()
+
+ # remove FIB entries
+ # done by tearDown
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_End_DX4(self):
+ """ Test SRv6 End.DX4 behavior.
+ """
+ # send traffic to one destination interface
+ # source interface is IPv6 only
+ # destination interface is IPv4 only
+ self.setup_interfaces(ipv6=[True, False], ipv4=[False, True])
+
+ # configure SRv6 localSID End.DX4 behavior
+ localsid = VppSRv6LocalSID(
+ self, localsid_addr='a3::c4',
+ behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX4,
+ nh_addr=self.pg1.remote_ip4,
+ end_psp=0,
+ sw_if_index=self.pg1.sw_if_index,
+ vlan_index=0,
+ fib_table=0)
+ localsid.add_vpp_config()
+ # log the localsids
+ self.logger.debug(self.vapi.cli("show sr localsid"))
+
+ # send one packet per packet size
+ count = len(self.pg_packet_sizes)
+ dst_inner = '4.1.1.123' # inner header destination address
+ pkts = []
+
+ # packets with SRH, segments-left 0, active segment a3::c4
+ packet_header = self.create_packet_header_IPv6_SRH_IPv4(
+ dst_inner,
+ sidlist=['a3::c4', 'a2::', 'a1::'],
+ segleft=0)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets without SRH, IPv4 in IPv6
+ # outer IPv6 dest addr is the localsid End.DX4
+ packet_header = self.create_packet_header_IPv6_IPv4(
+ dst_inner,
+ dst_outer='a3::c4')
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_End_DX4)
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SRv6 localSIDs
+ localsid.remove_vpp_config()
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_End_DT4(self):
+ """ Test SRv6 End.DT4 behavior.
+ """
+ # create three interfaces (1 source, 2 destinations)
+ # source interface is IPv6-only
+ # destination interfaces are IPv4 only
+ # source interface in global FIB (0)
+ # destination interfaces in global and vrf
+ vrf_1 = 1
+ self.setup_interfaces(ipv6=[True, False, False],
+ ipv4=[False, True, True],
+ ipv6_table_id=[0, 0, 0],
+ ipv4_table_id=[0, 0, vrf_1])
+
+ # configure FIB entries
+ # 4.1.1.0/24 is reachable
+ # via pg1 in table 0 (global)
+ # and via pg2 in table vrf_1
+ route0 = VppIpRoute(self, "4.1.1.0", 24,
+ [VppRoutePath(self.pg1.remote_ip4,
+ self.pg1.sw_if_index,
+ nh_table_id=0)],
+ table_id=0,
+ is_ip6=0)
+ route0.add_vpp_config()
+ route1 = VppIpRoute(self, "4.1.1.0", 24,
+ [VppRoutePath(self.pg2.remote_ip4,
+ self.pg2.sw_if_index,
+ nh_table_id=vrf_1)],
+ table_id=vrf_1,
+ is_ip6=0)
+ route1.add_vpp_config()
+ self.logger.debug(self.vapi.cli("show ip fib"))
+
+ # configure SRv6 localSID End.DT6 behavior
+ # Note:
+ # fib_table: where the localsid is installed
+ # sw_if_index: in T-variants of localsid: vrf table_id
+ localsid = VppSRv6LocalSID(
+ self, localsid_addr='a3::c4',
+ behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT4,
+ nh_addr='::',
+ end_psp=0,
+ sw_if_index=vrf_1,
+ vlan_index=0,
+ fib_table=0)
+ localsid.add_vpp_config()
+ # log the localsids
+ self.logger.debug(self.vapi.cli("show sr localsid"))
+
+ # create IPv6 packets with SRH (SL=0)
+ # send one packet per packet size
+ count = len(self.pg_packet_sizes)
+ dst_inner = '4.1.1.123' # inner header destination address
+ pkts = []
+
+ # packets with SRH, segments-left 0, active segment a3::c4
+ packet_header = self.create_packet_header_IPv6_SRH_IPv4(
+ dst_inner,
+ sidlist=['a3::c4', 'a2::', 'a1::'],
+ segleft=0)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets without SRH, IPv6 in IPv6
+ # outer IPv6 dest addr is the localsid End.DX4
+ packet_header = self.create_packet_header_IPv6_IPv4(
+ dst_inner,
+ dst_outer='a3::c4')
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ # using same comparison function as End.DX4
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
+ self.compare_rx_tx_packet_End_DX4)
+
+ # assert nothing was received on the other interface (pg2)
+ self.pg1.assert_nothing_captured("mis-directed packet(s)")
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SRv6 localSIDs
+ localsid.remove_vpp_config()
+
+ # remove FIB entries
+ # done by tearDown
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def test_SRv6_End_DX2(self):
+ """ Test SRv6 End.DX2 behavior.
+ """
+ # send traffic to one destination interface
+ # source interface is IPv6 only
+ self.setup_interfaces(ipv6=[True, False], ipv4=[False, False])
+
+ # configure SRv6 localSID End.DX2 behavior
+ localsid = VppSRv6LocalSID(
+ self, localsid_addr='a3::c4',
+ behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX2,
+ nh_addr='::',
+ end_psp=0,
+ sw_if_index=self.pg1.sw_if_index,
+ vlan_index=0,
+ fib_table=0)
+ localsid.add_vpp_config()
+ # log the localsids
+ self.logger.debug(self.vapi.cli("show sr localsid"))
+
+ # send one packet per packet size
+ count = len(self.pg_packet_sizes)
+ pkts = []
+
+ # packets with SRH, segments-left 0, active segment a3::c4
+ # L2 has no dot1q header
+ packet_header = self.create_packet_header_IPv6_SRH_L2(
+ sidlist=['a3::c4', 'a2::', 'a1::'],
+ segleft=0,
+ vlan=0)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets with SRH, segments-left 0, active segment a3::c4
+ # L2 has dot1q header
+ packet_header = self.create_packet_header_IPv6_SRH_L2(
+ sidlist=['a3::c4', 'a2::', 'a1::'],
+ segleft=0,
+ vlan=123)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets without SRH, L2 in IPv6
+ # outer IPv6 dest addr is the localsid End.DX2
+ # L2 has no dot1q header
+ packet_header = self.create_packet_header_IPv6_L2(
+ dst_outer='a3::c4',
+ vlan=0)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # packets without SRH, L2 in IPv6
+ # outer IPv6 dest addr is the localsid End.DX2
+ # L2 has dot1q header
+ packet_header = self.create_packet_header_IPv6_L2(
+ dst_outer='a3::c4',
+ vlan=123)
+ # add to traffic stream pg0->pg1
+ pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
+ self.pg_packet_sizes, count))
+
+ # send packets and verify received packets
+ self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
+ self.compare_rx_tx_packet_End_DX2)
+
+ # log the localsid counters
+ self.logger.info(self.vapi.cli("show sr localsid"))
+
+ # remove SRv6 localSIDs
+ localsid.remove_vpp_config()
+
+ # cleanup interfaces
+ self.teardown_interfaces()
+
+ def compare_rx_tx_packet_T_Encaps(self, tx_pkt, rx_pkt):
+ """ Compare input and output packet after passing T.Encaps
+
+ :param tx_pkt: transmitted packet
+ :param rx_pkt: received packet
+ """
+ # T.Encaps updates the headers as follows:
+ # SR Policy seglist (S3, S2, S1)
+ # SR Policy source C
+ # IPv6:
+ # in: IPv6(A, B2)
+ # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(A, B2)
+ # IPv6 + SRH:
+ # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
+ # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(a, B2)SRH(B3, B2, B1; SL=1)
+
+ # get first (outer) IPv6 header of rx'ed packet
+ rx_ip = rx_pkt.getlayer(IPv6)
+ rx_srh = None
+
+ tx_ip = tx_pkt.getlayer(IPv6)
+
+ # expected segment-list
+ seglist = self.sr_policy.segments
+ # reverse list to get order as in SRH
+ tx_seglist = seglist[::-1]
+
+ # get source address of SR Policy
+ sr_policy_source = self.sr_policy.source
+
+ # rx'ed packet should have SRH
+ self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+ # get SRH
+ rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+ # received ip.src should be equal to SR Policy source
+ self.assertEqual(rx_ip.src, sr_policy_source)
+ # received ip.dst should be equal to expected sidlist[lastentry]
+ self.assertEqual(rx_ip.dst, tx_seglist[-1])
+ # rx'ed seglist should be equal to expected seglist
+ self.assertEqual(rx_srh.addresses, tx_seglist)
+ # segleft should be equal to size expected seglist-1
+ self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+ # segleft should be equal to lastentry
+ self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+
+ # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+ # except for the hop-limit field
+ # -> update tx'ed hlim to the expected hlim
+ tx_ip.hlim = tx_ip.hlim - 1
+
+ self.assertEqual(rx_srh.payload, tx_ip)
+
+ self.logger.debug("packet verification: SUCCESS")
+
+ def compare_rx_tx_packet_T_Encaps_IPv4(self, tx_pkt, rx_pkt):
+ """ Compare input and output packet after passing T.Encaps for IPv4
+
+ :param tx_pkt: transmitted packet
+ :param rx_pkt: received packet
+ """
+ # T.Encaps for IPv4 updates the headers as follows:
+ # SR Policy seglist (S3, S2, S1)
+ # SR Policy source C
+ # IPv4:
+ # in: IPv4(A, B2)
+ # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv4(A, B2)
+
+ # get first (outer) IPv6 header of rx'ed packet
+ rx_ip = rx_pkt.getlayer(IPv6)
+ rx_srh = None
+
+ tx_ip = tx_pkt.getlayer(IP)
+
+ # expected segment-list
+ seglist = self.sr_policy.segments
+ # reverse list to get order as in SRH
+ tx_seglist = seglist[::-1]
+
+ # get source address of SR Policy
+ sr_policy_source = self.sr_policy.source
+
+ # checks common to cases tx with and without SRH
+ # rx'ed packet should have SRH and IPv4 header
+ self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+ self.assertTrue(rx_ip.payload.haslayer(IP))
+ # get SRH
+ rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+ # received ip.src should be equal to SR Policy source
+ self.assertEqual(rx_ip.src, sr_policy_source)
+ # received ip.dst should be equal to sidlist[lastentry]
+ self.assertEqual(rx_ip.dst, tx_seglist[-1])
+ # rx'ed seglist should be equal to seglist
+ self.assertEqual(rx_srh.addresses, tx_seglist)
+ # segleft should be equal to size seglist-1
+ self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+ # segleft should be equal to lastentry
+ self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+
+ # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+ # except for the ttl field and ip checksum
+ # -> adjust tx'ed ttl to expected ttl
+ tx_ip.ttl = tx_ip.ttl - 1
+ # -> set tx'ed ip checksum to None and let scapy recompute
+ tx_ip.chksum = None
+ # read back the pkt (with str()) to force computing these fields
+ # probably other ways to accomplish this are possible
+ tx_ip = IP(str(tx_ip))
+
+ self.assertEqual(rx_srh.payload, tx_ip)
+
+ self.logger.debug("packet verification: SUCCESS")
+
+ def compare_rx_tx_packet_T_Encaps_L2(self, tx_pkt, rx_pkt):
+ """ Compare input and output packet after passing T.Encaps for L2
+
+ :param tx_pkt: transmitted packet
+ :param rx_pkt: received packet
+ """
+ # T.Encaps for L2 updates the headers as follows:
+ # SR Policy seglist (S3, S2, S1)
+ # SR Policy source C
+ # L2:
+ # in: L2
+ # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)L2
+
+ # get first (outer) IPv6 header of rx'ed packet
+ rx_ip = rx_pkt.getlayer(IPv6)
+ rx_srh = None
+
+ tx_ether = tx_pkt.getlayer(Ether)
+
+ # expected segment-list
+ seglist = self.sr_policy.segments
+ # reverse list to get order as in SRH
+ tx_seglist = seglist[::-1]
+
+ # get source address of SR Policy
+ sr_policy_source = self.sr_policy.source
+
+ # rx'ed packet should have SRH
+ self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+ # get SRH
+ rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+ # received ip.src should be equal to SR Policy source
+ self.assertEqual(rx_ip.src, sr_policy_source)
+ # received ip.dst should be equal to sidlist[lastentry]
+ self.assertEqual(rx_ip.dst, tx_seglist[-1])
+ # rx'ed seglist should be equal to seglist
+ self.assertEqual(rx_srh.addresses, tx_seglist)
+ # segleft should be equal to size seglist-1
+ self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+ # segleft should be equal to lastentry
+ self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+ # nh should be "No Next Header" (59)
+ self.assertEqual(rx_srh.nh, 59)
+
+ # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
+ self.assertEqual(Ether(str(rx_srh.payload)), tx_ether)
+
+ self.logger.debug("packet verification: SUCCESS")
+
+ def compare_rx_tx_packet_T_Insert(self, tx_pkt, rx_pkt):
+ """ Compare input and output packet after passing T.Insert
+
+ :param tx_pkt: transmitted packet
+ :param rx_pkt: received packet
+ """
+ # T.Insert updates the headers as follows:
+ # IPv6:
+ # in: IPv6(A, B2)
+ # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)
+ # IPv6 + SRH:
+ # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
+ # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)SRH(B3, B2, B1; SL=1)
+
+ # get first (outer) IPv6 header of rx'ed packet
+ rx_ip = rx_pkt.getlayer(IPv6)
+ rx_srh = None
+ rx_ip2 = None
+ rx_srh2 = None
+ rx_ip3 = None
+ rx_udp = rx_pkt[UDP]
+
+ tx_ip = tx_pkt.getlayer(IPv6)
+ tx_srh = None
+ tx_ip2 = None
+ # some packets have been tx'ed with an SRH, some without it
+ # get SRH if tx'ed packet has it
+ if tx_pkt.haslayer(IPv6ExtHdrSegmentRouting):
+ tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+ tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+ tx_udp = tx_pkt[UDP]
+
+ # expected segment-list (make copy of SR Policy segment list)
+ seglist = self.sr_policy.segments[:]
+ # expected seglist has initial dest addr as last segment
+ seglist.append(tx_ip.dst)
+ # reverse list to get order as in SRH
+ tx_seglist = seglist[::-1]
+
+ # get source address of SR Policy
+ sr_policy_source = self.sr_policy.source
+
+ # checks common to cases tx with and without SRH
+ # rx'ed packet should have SRH and only one IPv6 header
+ self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+ self.assertFalse(rx_ip.payload.haslayer(IPv6))
+ # get SRH
+ rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+ # rx'ed ip.src should be equal to tx'ed ip.src
+ self.assertEqual(rx_ip.src, tx_ip.src)
+ # rx'ed ip.dst should be equal to sidlist[lastentry]
+ self.assertEqual(rx_ip.dst, tx_seglist[-1])
+
+ # rx'ed seglist should be equal to expected seglist
+ self.assertEqual(rx_srh.addresses, tx_seglist)
+ # segleft should be equal to size(expected seglist)-1
+ self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
+ # segleft should be equal to lastentry
+ self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
+
+ if tx_srh: # packet was tx'ed with SRH
+ # packet should have 2nd SRH
+ self.assertTrue(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
+ # get 2nd SRH
+ rx_srh2 = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting, 2)
+
+ # rx'ed srh2.addresses should be equal to tx'ed srh.addresses
+ self.assertEqual(rx_srh2.addresses, tx_srh.addresses)
+ # rx'ed srh2.segleft should be equal to tx'ed srh.segleft
+ self.assertEqual(rx_srh2.segleft, tx_srh.segleft)
+ # rx'ed srh2.lastentry should be equal to tx'ed srh.lastentry
+ self.assertEqual(rx_srh2.lastentry, tx_srh.lastentry)
+
+ else: # packet was tx'ed without SRH
+ # rx packet should have no other SRH
+ self.assertFalse(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
+
+ # UDP layer should be unchanged
+ self.assertEqual(rx_udp, tx_udp)
+
+ self.logger.debug("packet verification: SUCCESS")
+
+ def compare_rx_tx_packet_End(self, tx_pkt, rx_pkt):
+ """ Compare input and output packet after passing End (without PSP)
+
+ :param tx_pkt: transmitted packet
+ :param rx_pkt: received packet
+ """
+ # End (no PSP) updates the headers as follows:
+ # IPv6 + SRH:
+ # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
+ # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
+
+ # get first (outer) IPv6 header of rx'ed packet
+ rx_ip = rx_pkt.getlayer(IPv6)
+ rx_srh = None
+ rx_ip2 = None
+ rx_udp = rx_pkt[UDP]
+
+ tx_ip = tx_pkt.getlayer(IPv6)
+ # we know the packet has been tx'ed
+ # with an inner IPv6 header and an SRH
+ tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+ tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+ tx_udp = tx_pkt[UDP]
+
+ # common checks, regardless of tx segleft value
+ # rx'ed packet should have 2nd IPv6 header
+ self.assertTrue(rx_ip.payload.haslayer(IPv6))
+ # get second (inner) IPv6 header
+ rx_ip2 = rx_pkt.getlayer(IPv6, 2)
+
+ if tx_ip.segleft > 0:
+ # SRH should NOT have been popped:
+ # End SID without PSP does not pop SRH if segleft>0
+ self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+ rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+ # received ip.src should be equal to expected ip.src
+ self.assertEqual(rx_ip.src, tx_ip.src)
+ # sidlist should be unchanged
+ self.assertEqual(rx_srh.addresses, tx_srh.addresses)
+ # segleft should have been decremented
+ self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
+ # received ip.dst should be equal to sidlist[segleft]
+ self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
+ # lastentry should be unchanged
+ self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
+ # inner IPv6 packet (ip2) should be unchanged
+ self.assertEqual(rx_ip2.src, tx_ip2.src)
+ self.assertEqual(rx_ip2.dst, tx_ip2.dst)
+ # else: # tx_ip.segleft == 0
+ # TODO: Does this work with 2 SRHs in ingress packet?
+
+ # UDP layer should be unchanged
+ self.assertEqual(rx_udp, tx_udp)
+
+ self.logger.debug("packet verification: SUCCESS")
+
+ def compare_rx_tx_packet_End_PSP(self, tx_pkt, rx_pkt):
+ """ Compare input and output packet after passing End with PSP
+
+ :param tx_pkt: transmitted packet
+ :param rx_pkt: received packet
+ """
+ # End (PSP) updates the headers as follows:
+ # IPv6 + SRH (SL>1):
+ # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
+ # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
+ # IPv6 + SRH (SL=1):
+ # in: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
+ # out: IPv6(A, S3)
+
+ # get first (outer) IPv6 header of rx'ed packet
+ rx_ip = rx_pkt.getlayer(IPv6)
+ rx_srh = None
+ rx_ip2 = None
+ rx_udp = rx_pkt[UDP]
+
+ tx_ip = tx_pkt.getlayer(IPv6)
+ # we know the packet has been tx'ed
+ # with an inner IPv6 header and an SRH
+ tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+ tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+ tx_udp = tx_pkt[UDP]
+
+ # common checks, regardless of tx segleft value
+ self.assertTrue(rx_ip.payload.haslayer(IPv6))
+ rx_ip2 = rx_pkt.getlayer(IPv6, 2)
+ # inner IPv6 packet (ip2) should be unchanged
+ self.assertEqual(rx_ip2.src, tx_ip2.src)
+ self.assertEqual(rx_ip2.dst, tx_ip2.dst)
+
+ if tx_ip.segleft > 1:
+ # SRH should NOT have been popped:
+ # End SID with PSP does not pop SRH if segleft>1
+ # rx'ed packet should have SRH
+ self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+ rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
+
+ # received ip.src should be equal to expected ip.src
+ self.assertEqual(rx_ip.src, tx_ip.src)
+ # sidlist should be unchanged
+ self.assertEqual(rx_srh.addresses, tx_srh.addresses)
+ # segleft should have been decremented
+ self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
+ # received ip.dst should be equal to sidlist[segleft]
+ self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
+ # lastentry should be unchanged
+ self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
+
+ else: # tx_ip.segleft <= 1
+ # SRH should have been popped:
+ # End SID with PSP and segleft=1 pops SRH
+ # the two IPv6 headers are still present
+ # outer IPv6 header has DA == last segment of popped SRH
+ # SRH should not be present
+ self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+ # outer IPv6 header ip.src should be equal to tx'ed ip.src
+ self.assertEqual(rx_ip.src, tx_ip.src)
+ # outer IPv6 header ip.dst should be = to tx'ed sidlist[segleft-1]
+ self.assertEqual(rx_ip.dst, tx_srh.addresses[tx_srh.segleft-1])
+
+ # UDP layer should be unchanged
+ self.assertEqual(rx_udp, tx_udp)
+
+ self.logger.debug("packet verification: SUCCESS")
+
+ def compare_rx_tx_packet_End_DX6(self, tx_pkt, rx_pkt):
+ """ Compare input and output packet after passing End.DX6
+
+ :param tx_pkt: transmitted packet
+ :param rx_pkt: received packet
+ """
+ # End.DX6 updates the headers as follows:
+ # IPv6 + SRH (SL=0):
+ # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv6(B, D)
+ # out: IPv6(B, D)
+ # IPv6:
+ # in: IPv6(A, S3)IPv6(B, D)
+ # out: IPv6(B, D)
+
+ # get first (outer) IPv6 header of rx'ed packet
+ rx_ip = rx_pkt.getlayer(IPv6)
+
+ tx_ip = tx_pkt.getlayer(IPv6)
+ tx_ip2 = tx_pkt.getlayer(IPv6, 2)
+
+ # verify if rx'ed packet has no SRH
+ self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+ # the whole rx_ip pkt should be equal to tx_ip2
+ # except for the hlim field
+ # -> adjust tx'ed hlim to expected hlim
+ tx_ip2.hlim = tx_ip2.hlim - 1
+
+ self.assertEqual(rx_ip, tx_ip2)
+
+ self.logger.debug("packet verification: SUCCESS")
+
+ def compare_rx_tx_packet_End_DX4(self, tx_pkt, rx_pkt):
+ """ Compare input and output packet after passing End.DX4
+
+ :param tx_pkt: transmitted packet
+ :param rx_pkt: received packet
+ """
+ # End.DX4 updates the headers as follows:
+ # IPv6 + SRH (SL=0):
+ # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv4(B, D)
+ # out: IPv4(B, D)
+ # IPv6:
+ # in: IPv6(A, S3)IPv4(B, D)
+ # out: IPv4(B, D)
+
+ # get IPv4 header of rx'ed packet
+ rx_ip = rx_pkt.getlayer(IP)
+
+ tx_ip = tx_pkt.getlayer(IPv6)
+ tx_ip2 = tx_pkt.getlayer(IP)
+
+ # verify if rx'ed packet has no SRH
+ self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+ # the whole rx_ip pkt should be equal to tx_ip2
+ # except for the ttl field and ip checksum
+ # -> adjust tx'ed ttl to expected ttl
+ tx_ip2.ttl = tx_ip2.ttl - 1
+ # -> set tx'ed ip checksum to None and let scapy recompute
+ tx_ip2.chksum = None
+ # read back the pkt (with str()) to force computing these fields
+ # probably other ways to accomplish this are possible
+ tx_ip2 = IP(str(tx_ip2))
+
+ self.assertEqual(rx_ip, tx_ip2)
+
+ self.logger.debug("packet verification: SUCCESS")
+
+ def compare_rx_tx_packet_End_DX2(self, tx_pkt, rx_pkt):
+ """ Compare input and output packet after passing End.DX2
+
+ :param tx_pkt: transmitted packet
+ :param rx_pkt: received packet
+ """
+ # End.DX2 updates the headers as follows:
+ # IPv6 + SRH (SL=0):
+ # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)L2
+ # out: L2
+ # IPv6:
+ # in: IPv6(A, S3)L2
+ # out: L2
+
+ # get IPv4 header of rx'ed packet
+ rx_eth = rx_pkt.getlayer(Ether)
+
+ tx_ip = tx_pkt.getlayer(IPv6)
+ # we can't just get the 2nd Ether layer
+ # get the Raw content and dissect it as Ether
+ tx_eth1 = Ether(str(tx_pkt[Raw]))
+
+ # verify if rx'ed packet has no SRH
+ self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
+
+ # the whole rx_eth pkt should be equal to tx_eth1
+ self.assertEqual(rx_eth, tx_eth1)
+
+ self.logger.debug("packet verification: SUCCESS")
+
+ def create_stream(self, src_if, dst_if, packet_header, packet_sizes,
+ count):
+ """Create SRv6 input packet stream for defined interface.
+
+ :param VppInterface src_if: Interface to create packet stream for
+ :param VppInterface dst_if: destination interface of packet stream
+ :param packet_header: Layer3 scapy packet headers,
+ L2 is added when not provided,
+ Raw(payload) with packet_info is added
+ :param list packet_sizes: packet stream pckt sizes,sequentially applied
+ to packets in stream have
+ :param int count: number of packets in packet stream
+ :return: list of packets
+ """
+ self.logger.info("Creating packets")
+ pkts = []
+ for i in range(0, count-1):
+ payload_info = self.create_packet_info(src_if, dst_if)
+ self.logger.debug(
+ "Creating packet with index %d" % (payload_info.index))
+ payload = self.info_to_payload(payload_info)
+ # add L2 header if not yet provided in packet_header
+ if packet_header.getlayer(0).name == 'Ethernet':
+ p = (packet_header /
+ Raw(payload))
+ else:
+ p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+ packet_header /
+ Raw(payload))
+ size = packet_sizes[i % len(packet_sizes)]
+ self.logger.debug("Packet size %d" % (size))
+ self.extend_packet(p, size)
+ # we need to store the packet with the automatic fields computed
+ # read back the dumped packet (with str())
+ # to force computing these fields
+ # probably other ways are possible
+ p = Ether(str(p))
+ payload_info.data = p.copy()
+ self.logger.debug(ppp("Created packet:", p))
+ pkts.append(p)
+ self.logger.info("Done creating packets")
+ return pkts
+
+ def send_and_verify_pkts(self, input, pkts, output, compare_func):
+ """Send packets and verify received packets using compare_func
+
+ :param input: ingress interface of DUT
+ :param pkts: list of packets to transmit
+ :param output: egress interface of DUT
+ :param compare_func: function to compare in and out packets
+ """
+ # add traffic stream to input interface
+ input.add_stream(pkts)
+
+ # enable capture on all interfaces
+ self.pg_enable_capture(self.pg_interfaces)
+
+ # start traffic
+ self.logger.info("Starting traffic")
+ self.pg_start()
+
+ # get output capture
+ self.logger.info("Getting packet capture")
+ capture = output.get_capture()
+
+ # assert nothing was captured on input interface
+ input.assert_nothing_captured()
+
+ # verify captured packets
+ self.verify_captured_pkts(output, capture, compare_func)
+
+ def create_packet_header_IPv6(self, dst):
+ """Create packet header: IPv6 header, UDP header
+
+ :param dst: IPv6 destination address
+
+ IPv6 source address is 1234::1
+ UDP source port and destination port are 1234
+ """
+
+ p = (IPv6(src='1234::1', dst=dst) /
+ UDP(sport=1234, dport=1234))
+ return p
+
+ def create_packet_header_IPv6_SRH(self, sidlist, segleft):
+ """Create packet header: IPv6 header with SRH, UDP header
+
+ :param list sidlist: segment list
+ :param int segleft: segments-left field value
+
+ IPv6 destination address is set to sidlist[segleft]
+ IPv6 source addresses are 1234::1 and 4321::1
+ UDP source port and destination port are 1234
+ """
+
+ p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+ IPv6ExtHdrSegmentRouting(addresses=sidlist) /
+ UDP(sport=1234, dport=1234))
+ return p
+
+ def create_packet_header_IPv6_SRH_IPv6(self, dst, sidlist, segleft):
+ """Create packet header: IPv6 encapsulated in SRv6:
+ IPv6 header with SRH, IPv6 header, UDP header
+
+ :param ipv6address dst: inner IPv6 destination address
+ :param list sidlist: segment list of outer IPv6 SRH
+ :param int segleft: segments-left field of outer IPv6 SRH
+
+ Outer IPv6 destination address is set to sidlist[segleft]
+ IPv6 source addresses are 1234::1 and 4321::1
+ UDP source port and destination port are 1234
+ """
+
+ p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+ IPv6ExtHdrSegmentRouting(addresses=sidlist,
+ segleft=segleft, nh=41) /
+ IPv6(src='4321::1', dst=dst) /
+ UDP(sport=1234, dport=1234))
+ return p
+
+ def create_packet_header_IPv6_IPv6(self, dst_inner, dst_outer):
+ """Create packet header: IPv6 encapsulated in IPv6:
+ IPv6 header, IPv6 header, UDP header
+
+ :param ipv6address dst_inner: inner IPv6 destination address
+ :param ipv6address dst_outer: outer IPv6 destination address
+
+ IPv6 source addresses are 1234::1 and 4321::1
+ UDP source port and destination port are 1234
+ """
+
+ p = (IPv6(src='1234::1', dst=dst_outer) /
+ IPv6(src='4321::1', dst=dst_inner) /
+ UDP(sport=1234, dport=1234))
+ return p
+
+ def create_packet_header_IPv6_SRH_SRH_IPv6(self, dst, sidlist1, segleft1,
+ sidlist2, segleft2):
+ """Create packet header: IPv6 encapsulated in SRv6 with 2 SRH:
+ IPv6 header with SRH, 2nd SRH, IPv6 header, UDP header
+
+ :param ipv6address dst: inner IPv6 destination address
+ :param list sidlist1: segment list of outer IPv6 SRH
+ :param int segleft1: segments-left field of outer IPv6 SRH
+ :param list sidlist2: segment list of inner IPv6 SRH
+ :param int segleft2: segments-left field of inner IPv6 SRH
+
+ Outer IPv6 destination address is set to sidlist[segleft]
+ IPv6 source addresses are 1234::1 and 4321::1
+ UDP source port and destination port are 1234
+ """
+
+ p = (IPv6(src='1234::1', dst=sidlist1[segleft1]) /
+ IPv6ExtHdrSegmentRouting(addresses=sidlist1,
+ segleft=segleft1, nh=43) /
+ IPv6ExtHdrSegmentRouting(addresses=sidlist2,
+ segleft=segleft2, nh=41) /
+ IPv6(src='4321::1', dst=dst) /
+ UDP(sport=1234, dport=1234))
+ return p
+
+ def create_packet_header_IPv4(self, dst):
+ """Create packet header: IPv4 header, UDP header
+
+ :param dst: IPv4 destination address
+
+ IPv4 source address is 123.1.1.1
+ UDP source port and destination port are 1234
+ """
+
+ p = (IP(src='123.1.1.1', dst=dst) /
+ UDP(sport=1234, dport=1234))
+ return p
+
+ def create_packet_header_IPv6_IPv4(self, dst_inner, dst_outer):
+ """Create packet header: IPv4 encapsulated in IPv6:
+ IPv6 header, IPv4 header, UDP header
+
+ :param ipv4address dst_inner: inner IPv4 destination address
+ :param ipv6address dst_outer: outer IPv6 destination address
+
+ IPv6 source address is 1234::1
+ IPv4 source address is 123.1.1.1
+ UDP source port and destination port are 1234
+ """
+
+ p = (IPv6(src='1234::1', dst=dst_outer) /
+ IP(src='123.1.1.1', dst=dst_inner) /
+ UDP(sport=1234, dport=1234))
+ return p
+
+ def create_packet_header_IPv6_SRH_IPv4(self, dst, sidlist, segleft):
+ """Create packet header: IPv4 encapsulated in SRv6:
+ IPv6 header with SRH, IPv4 header, UDP header
+
+ :param ipv4address dst: inner IPv4 destination address
+ :param list sidlist: segment list of outer IPv6 SRH
+ :param int segleft: segments-left field of outer IPv6 SRH
+
+ Outer IPv6 destination address is set to sidlist[segleft]
+ IPv6 source address is 1234::1
+ IPv4 source address is 123.1.1.1
+ UDP source port and destination port are 1234
+ """
+
+ p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+ IPv6ExtHdrSegmentRouting(addresses=sidlist,
+ segleft=segleft, nh=4) /
+ IP(src='123.1.1.1', dst=dst) /
+ UDP(sport=1234, dport=1234))
+ return p
+
+ def create_packet_header_L2(self, vlan=0):
+ """Create packet header: L2 header
+
+ :param vlan: if vlan!=0 then add 802.1q header
+ """
+ # Note: the dst addr ('00:55:44:33:22:11') is used in
+ # the compare function compare_rx_tx_packet_T_Encaps_L2
+ # to detect presence of L2 in SRH payload
+ p = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+ etype = 0x8137 # IPX
+ if vlan:
+ # add 802.1q layer
+ p /= Dot1Q(vlan=vlan, type=etype)
+ else:
+ p.type = etype
+ return p
+
+ def create_packet_header_IPv6_SRH_L2(self, sidlist, segleft, vlan=0):
+ """Create packet header: L2 encapsulated in SRv6:
+ IPv6 header with SRH, L2
+
+ :param list sidlist: segment list of outer IPv6 SRH
+ :param int segleft: segments-left field of outer IPv6 SRH
+ :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
+
+ Outer IPv6 destination address is set to sidlist[segleft]
+ IPv6 source address is 1234::1
+ """
+ eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+ etype = 0x8137 # IPX
+ if vlan:
+ # add 802.1q layer
+ eth /= Dot1Q(vlan=vlan, type=etype)
+ else:
+ eth.type = etype
+
+ p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
+ IPv6ExtHdrSegmentRouting(addresses=sidlist,
+ segleft=segleft, nh=59) /
+ eth)
+ return p
+
+ def create_packet_header_IPv6_L2(self, dst_outer, vlan=0):
+ """Create packet header: L2 encapsulated in IPv6:
+ IPv6 header, L2
+
+ :param ipv6address dst_outer: outer IPv6 destination address
+ :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
+ """
+ eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
+ etype = 0x8137 # IPX
+ if vlan:
+ # add 802.1q layer
+ eth /= Dot1Q(vlan=vlan, type=etype)
+ else:
+ eth.type = etype
+
+ p = (IPv6(src='1234::1', dst=dst_outer, nh=59) / eth)
+ return p
+
+ def get_payload_info(self, packet):
+ """ Extract the payload_info from the packet
+ """
+ # in most cases, payload_info is in packet[Raw]
+ # but packet[Raw] gives the complete payload
+ # (incl L2 header) for the T.Encaps L2 case
+ try:
+ payload_info = self.payload_to_info(str(packet[Raw]))
+
+ except:
+ # remote L2 header from packet[Raw]:
+ # take packet[Raw], convert it to an Ether layer
+ # and then extract Raw from it
+ payload_info = self.payload_to_info(
+ str(Ether(str(packet[Raw]))[Raw]))
+
+ return payload_info
+
+ def verify_captured_pkts(self, dst_if, capture, compare_func):
+ """
+ Verify captured packet stream for specified interface.
+ Compare ingress with egress packets using the specified compare fn
+
+ :param dst_if: egress interface of DUT
+ :param capture: captured packets
+ :param compare_func: function to compare in and out packet
+ """
+ self.logger.info("Verifying capture on interface %s using function %s"
+ % (dst_if.name, compare_func.func_name))
+
+ last_info = dict()
+ for i in self.pg_interfaces:
+ last_info[i.sw_if_index] = None
+ dst_sw_if_index = dst_if.sw_if_index
+
+ for packet in capture:
+ try:
+ # extract payload_info from packet's payload
+ payload_info = self.get_payload_info(packet)
+ packet_index = payload_info.index
+
+ self.logger.debug("Verifying packet with index %d"
+ % (packet_index))
+ # packet should have arrived on the expected interface
+ self.assertEqual(payload_info.dst, dst_sw_if_index)
+ self.logger.debug(
+ "Got packet on interface %s: src=%u (idx=%u)" %
+ (dst_if.name, payload_info.src, packet_index))
+
+ # search for payload_info with same src and dst if_index
+ # this will give us the transmitted packet
+ next_info = self.get_next_packet_info_for_interface2(
+ payload_info.src, dst_sw_if_index,
+ last_info[payload_info.src])
+ last_info[payload_info.src] = next_info
+ # next_info should not be None
+ self.assertTrue(next_info is not None)
+ # index of tx and rx packets should be equal
+ self.assertEqual(packet_index, next_info.index)
+ # data field of next_info contains the tx packet
+ txed_packet = next_info.data
+
+ self.logger.debug(ppp("Transmitted packet:",
+ txed_packet)) # ppp=Pretty Print Packet
+
+ self.logger.debug(ppp("Received packet:", packet))
+
+ # compare rcvd packet with expected packet using compare_func
+ compare_func(txed_packet, packet)
+
+ except:
+ print packet.command()
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # have all expected packets arrived?
+ for i in self.pg_interfaces:
+ remaining_packet = self.get_next_packet_info_for_interface2(
+ i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
+ self.assertTrue(remaining_packet is None,
+ "Interface %s: Packet expected from interface %s "
+ "didn't arrive" % (dst_if.name, i.name))
+
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)
diff --git a/test/vpp_papi_provider.py b/test/vpp_papi_provider.py
index 1daa2a9e..95de0be6 100644
--- a/test/vpp_papi_provider.py
+++ b/test/vpp_papi_provider.py
@@ -2108,3 +2108,121 @@ class VppPapiProvider(object):
'client_ip': client_ip,
'decap_vrf_id': decap_vrf_id,
'client_mac': client_mac})
+
+ def sr_localsid_add_del(self,
+ localsid_addr,
+ behavior,
+ nh_addr,
+ is_del=0,
+ end_psp=0,
+ sw_if_index=0xFFFFFFFF,
+ vlan_index=0,
+ fib_table=0,
+ ):
+ """ Add/del IPv6 SR local-SID.
+
+ :param localsid_addr:
+ :param behavior: END=1; END.X=2; END.DX2=4; END.DX6=5;
+ :param behavior: END.DX4=6; END.DT6=7; END.DT4=8
+ :param nh_addr:
+ :param is_del: (Default value = 0)
+ :param end_psp: (Default value = 0)
+ :param sw_if_index: (Default value = 0xFFFFFFFF)
+ :param vlan_index: (Default value = 0)
+ :param fib_table: (Default value = 0)
+ """
+ return self.api(
+ self.papi.sr_localsid_add_del,
+ {'is_del': is_del,
+ 'localsid_addr': localsid_addr,
+ 'end_psp': end_psp,
+ 'behavior': behavior,
+ 'sw_if_index': sw_if_index,
+ 'vlan_index': vlan_index,
+ 'fib_table': fib_table,
+ 'nh_addr': nh_addr
+ }
+ )
+
+ def sr_policy_add(
+ self,
+ bsid_addr,
+ weight=1,
+ is_encap=1,
+ type=0,
+ fib_table=0,
+ n_segments=0,
+ segments=[]):
+ """
+ :param bsid_addr: bindingSID of the SR Policy
+ :param weight: weight of the sid list. optional. (default: 1)
+ :param is_encap: (bool) whether SR policy should Encap or SRH insert \
+ (default: Encap)
+ :param type: type/behavior of the SR policy. (default or spray) \
+ (default: default)
+ :param fib_table: VRF where to install the FIB entry for the BSID \
+ (default: 0)
+ :param n_segments: number of segments \
+ (default: 0)
+ :param segments: a vector of IPv6 address composing the segment list \
+ (default: [])
+ """
+ return self.api(
+ self.papi.sr_policy_add,
+ {'bsid_addr': bsid_addr,
+ 'weight': weight,
+ 'is_encap': is_encap,
+ 'type': type,
+ 'fib_table': fib_table,
+ 'n_segments': n_segments,
+ 'segments': segments
+ }
+ )
+
+ def sr_policy_del(
+ self,
+ bsid_addr,
+ sr_policy_index=0):
+ """
+ :param bsid: bindingSID of the SR Policy
+ :param sr_policy_index: index of the sr policy (default: 0)
+ """
+ return self.api(
+ self.papi.sr_policy_del,
+ {'bsid_addr': bsid_addr,
+ 'sr_policy_index': sr_policy_index
+ })
+
+ def sr_steering_add_del(
+ self,
+ is_del,
+ bsid_addr,
+ sr_policy_index,
+ table_id,
+ prefix_addr,
+ mask_width,
+ sw_if_index,
+ traffic_type):
+ """
+ Steer traffic L2 and L3 traffic through a given SR policy
+
+ :param is_del: delete or add
+ :param bsid_addr: bindingSID of the SR Policy (alt to sr_policy_index)
+ :param sr_policy: is the index of the SR Policy (alt to bsid)
+ :param table_id: is the VRF where to install the FIB entry for the BSID
+ :param prefix_addr: is the IPv4/v6 address for L3 traffic type
+ :param mask_width: is the mask for L3 traffic type
+ :param sw_if_index: is the incoming interface for L2 traffic
+ :param traffic_type: type of traffic (IPv4: 4, IPv6: 6, L2: 2)
+ """
+ return self.api(
+ self.papi.sr_steering_add_del,
+ {'is_del': is_del,
+ 'bsid_addr': bsid_addr,
+ 'sr_policy_index': sr_policy_index,
+ 'table_id': table_id,
+ 'prefix_addr': prefix_addr,
+ 'mask_width': mask_width,
+ 'sw_if_index': sw_if_index,
+ 'traffic_type': traffic_type
+ })
diff --git a/test/vpp_srv6.py b/test/vpp_srv6.py
new file mode 100644
index 00000000..28ff4b85
--- /dev/null
+++ b/test/vpp_srv6.py
@@ -0,0 +1,238 @@
+"""
+ SRv6 LocalSIDs
+
+ object abstractions for representing SRv6 localSIDs in VPP
+"""
+
+from vpp_object import *
+from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
+
+
+class SRv6LocalSIDBehaviors():
+ # from src/vnet/srv6/sr.h
+ SR_BEHAVIOR_END = 1
+ SR_BEHAVIOR_X = 2
+ SR_BEHAVIOR_T = 3
+ SR_BEHAVIOR_D_FIRST = 4 # Unused. Separator in between regular and D
+ SR_BEHAVIOR_DX2 = 5
+ SR_BEHAVIOR_DX6 = 6
+ SR_BEHAVIOR_DX4 = 7
+ SR_BEHAVIOR_DT6 = 8
+ SR_BEHAVIOR_DT4 = 9
+ SR_BEHAVIOR_LAST = 10 # Must always be the last one
+
+
+class SRv6PolicyType():
+ # from src/vnet/srv6/sr.h
+ SR_POLICY_TYPE_DEFAULT = 0
+ SR_POLICY_TYPE_SPRAY = 1
+
+
+class SRv6PolicySteeringTypes():
+ # from src/vnet/srv6/sr.h
+ SR_STEER_L2 = 2
+ SR_STEER_IPV4 = 4
+ SR_STEER_IPV6 = 6
+
+
+class VppSRv6LocalSID(VppObject):
+ """
+ SRv6 LocalSID
+ """
+
+ def __init__(self, test, localsid_addr, behavior, nh_addr, end_psp,
+ sw_if_index, vlan_index, fib_table):
+ self._test = test
+ self.localsid_addr = localsid_addr
+ # keep binary format in _localsid_addr
+ self._localsid_addr = inet_pton(AF_INET6, self.localsid_addr)
+ self.behavior = behavior
+ self.nh_addr = nh_addr
+ # keep binary format in _nh_addr
+ if ':' in nh_addr:
+ # IPv6
+ self._nh_addr = inet_pton(AF_INET6, nh_addr)
+ else:
+ # IPv4
+ # API expects 16 octets (128 bits)
+ # last 4 octets are used for IPv4
+ # --> prepend 12 octets
+ self._nh_addr = ('\x00' * 12) + inet_pton(AF_INET, nh_addr)
+ self.end_psp = end_psp
+ self.sw_if_index = sw_if_index
+ self.vlan_index = vlan_index
+ self.fib_table = fib_table
+ self._configured = False
+
+ def add_vpp_config(self):
+ self._test.vapi.sr_localsid_add_del(
+ self._localsid_addr,
+ self.behavior,
+ self._nh_addr,
+ is_del=0,
+ end_psp=self.end_psp,
+ sw_if_index=self.sw_if_index,
+ vlan_index=self.vlan_index,
+ fib_table=self.fib_table)
+ self._configured = True
+
+ def remove_vpp_config(self):
+ self._test.vapi.sr_localsid_add_del(
+ self._localsid_addr,
+ self.behavior,
+ self._nh_addr,
+ is_del=1,
+ end_psp=self.end_psp,
+ sw_if_index=self.sw_if_index,
+ vlan_index=self.vlan_index,
+ fib_table=self.fib_table)
+ self._configured = False
+
+ def query_vpp_config(self):
+ # sr_localsids_dump API is disabled
+ # use _configured flag for now
+ return self._configured
+
+ def __str__(self):
+ return self.object_id()
+
+ def object_id(self):
+ return ("%d;%s,%d"
+ % (self.fib_table,
+ self.localsid_addr,
+ self.behavior))
+
+
+class VppSRv6Policy(VppObject):
+ """
+ SRv6 Policy
+ """
+
+ def __init__(self, test, bsid,
+ is_encap, sr_type, weight, fib_table,
+ segments, source):
+ self._test = test
+ self.bsid = bsid
+ # keep binary format in _bsid
+ self._bsid = inet_pton(AF_INET6, bsid)
+ self.is_encap = is_encap
+ self.sr_type = sr_type
+ self.weight = weight
+ self.fib_table = fib_table
+ self.segments = segments
+ # keep binary format in _segments
+ self._segments = []
+ for seg in segments:
+ self._segments.extend(inet_pton(AF_INET6, seg))
+ self.n_segments = len(segments)
+ # source not passed to API
+ # self.source = inet_pton(AF_INET6, source)
+ self.source = source
+ self._configured = False
+
+ def add_vpp_config(self):
+ self._test.vapi.sr_policy_add(
+ self._bsid,
+ self.weight,
+ self.is_encap,
+ self.sr_type,
+ self.fib_table,
+ self.n_segments,
+ self._segments)
+ self._configured = True
+
+ def remove_vpp_config(self):
+ self._test.vapi.sr_policy_del(
+ self._bsid)
+ self._configured = False
+
+ def query_vpp_config(self):
+ # no API to query SR Policies
+ # use _configured flag for now
+ return self._configured
+
+ def __str__(self):
+ return self.object_id()
+
+ def object_id(self):
+ return ("%d;%s-><%s>;%d"
+ % (self.sr_type,
+ self.bsid,
+ ','.join(self.segments),
+ self.is_encap))
+
+
+class VppSRv6Steering(VppObject):
+ """
+ SRv6 Steering
+ """
+
+ def __init__(self, test,
+ bsid,
+ prefix,
+ mask_width,
+ traffic_type,
+ sr_policy_index,
+ table_id,
+ sw_if_index):
+ self._test = test
+ self.bsid = bsid
+ # keep binary format in _bsid
+ self._bsid = inet_pton(AF_INET6, bsid)
+ self.prefix = prefix
+ # keep binary format in _prefix
+ if ':' in prefix:
+ # IPv6
+ self._prefix = inet_pton(AF_INET6, prefix)
+ else:
+ # IPv4
+ # API expects 16 octets (128 bits)
+ # last 4 octets are used for IPv4
+ # --> prepend 12 octets
+ self._prefix = ('\x00' * 12) + inet_pton(AF_INET, prefix)
+ self.mask_width = mask_width
+ self.traffic_type = traffic_type
+ self.sr_policy_index = sr_policy_index
+ self.sw_if_index = sw_if_index
+ self.table_id = table_id
+ self._configured = False
+
+ def add_vpp_config(self):
+ self._test.vapi.sr_steering_add_del(
+ 0,
+ self._bsid,
+ self.sr_policy_index,
+ self.table_id,
+ self._prefix,
+ self.mask_width,
+ self.sw_if_index,
+ self.traffic_type)
+ self._configured = True
+
+ def remove_vpp_config(self):
+ self._test.vapi.sr_steering_add_del(
+ 1,
+ self._bsid,
+ self.sr_policy_index,
+ self.table_id,
+ self._prefix,
+ self.mask_width,
+ self.sw_if_index,
+ self.traffic_type)
+ self._configured = False
+
+ def query_vpp_config(self):
+ # no API to query steering entries
+ # use _configured flag for now
+ return self._configured
+
+ def __str__(self):
+ return self.object_id()
+
+ def object_id(self):
+ return ("%d;%d;%s/%d->%s"
+ % (self.table_id,
+ self.traffic_type,
+ self.prefix,
+ self.mask_width,
+ self.bsid))