sr: new messages created to return sl index for segment lists in a sr policy

Type: fix
Signed-off-by: Chinmaya Agarwal <chinmaya.agarwal@hsc.com>
Change-Id: Id43ab583f444e4487085fc686d5faed4858b2e97

2 files changed, 102 insertions, 0 deletions

diff --git a/src/vnet/srv6/sr.api b/src/vnet/srv6/sr.api
index b33f0ebd811..6190a8c7ff5 100644
--- a/src/vnet/srv6/sr.api
+++ b/src/vnet/srv6/sr.api
@@ -28,6 +28,14 @@ typedef srv6_sid_list
   vl_api_ip6_address_t sids[16];
 };
 
+typedef srv6_sid_list_with_sl_index
+{
+  u8 num_sids;
+  u32 weight;
+  u32 sl_index;
+  vl_api_ip6_address_t sids[16];
+};
+
 /** \brief IPv6 SR LocalSID add/del request
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
@@ -197,6 +205,7 @@ define sr_policies_dump
   u32 context;
 };
 
+
 define sr_policies_details
 {
   u32 context;
@@ -208,6 +217,30 @@ define sr_policies_details
   vl_api_srv6_sid_list_t sid_lists[num_sid_lists];
 };
 
+/** \brief Dump the list of SR policies along with actual segment list index on VPP
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define sr_policies_with_sl_index_dump
+{
+  u32 client_index;
+  u32 context;
+  option status="in_progress";
+};
+
+
+define sr_policies_with_sl_index_details
+{
+  u32 context;
+  vl_api_ip6_address_t bsid;
+  bool is_spray;
+  bool is_encap;
+  u32 fib_table;
+  u8 num_sid_lists;
+  vl_api_srv6_sid_list_with_sl_index_t sid_lists[num_sid_lists];
+  option status="in_progress";
+};
+
 /** \brief Dump the steering policies
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
diff --git a/src/vnet/srv6/sr_api.c b/src/vnet/srv6/sr_api.c
index c039da01c63..278111f1dfc 100644
--- a/src/vnet/srv6/sr_api.c
+++ b/src/vnet/srv6/sr_api.c
@@ -56,6 +56,7 @@ _(SR_SET_ENCAP_SOURCE, sr_set_encap_source)             \
 _(SR_SET_ENCAP_HOP_LIMIT, sr_set_encap_hop_limit)       \
 _(SR_LOCALSIDS_DUMP, sr_localsids_dump)                 \
 _(SR_POLICIES_DUMP, sr_policies_dump)                   \
+_(SR_POLICIES_WITH_SL_INDEX_DUMP, sr_policies_with_sl_index_dump) \
 _(SR_STEERING_POL_DUMP, sr_steering_pol_dump)
 
 static void vl_api_sr_localsid_add_del_t_handler
@@ -344,6 +345,74 @@ vl_api_sr_policies_dump_t_handler (vl_api_sr_policies_dump_t * mp)
   /* *INDENT-ON* */
 }
 
+
+
+static void send_sr_policies_details_with_sl_index
+  (ip6_sr_policy_t * t, vl_api_registration_t * reg, u32 context)
+{
+  vl_api_sr_policies_with_sl_index_details_t *rmp;
+  ip6_sr_main_t *sm = &sr_main;
+
+  u32 *sl_index, slidx = 0;
+  ip6_sr_sl_t *segment_list = 0;
+  ip6_address_t *segment;
+  vl_api_srv6_sid_list_with_sl_index_t *api_sid_list;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp) +
+			  vec_len (t->segments_lists) *
+			  sizeof (vl_api_srv6_sid_list_with_sl_index_t));
+  clib_memset (rmp, 0,
+	       (sizeof (*rmp) +
+		vec_len (t->segments_lists) *
+		sizeof (vl_api_srv6_sid_list_with_sl_index_t)));
+
+  rmp->_vl_msg_id = ntohs (VL_API_SR_POLICIES_WITH_SL_INDEX_DETAILS);
+  ip6_address_encode (&t->bsid, rmp->bsid);
+  rmp->is_encap = t->is_encap;
+  rmp->is_spray = t->type;
+  rmp->fib_table = htonl (t->fib_table);
+  rmp->num_sid_lists = vec_len (t->segments_lists);
+
+  /* Fill in all the segments lists */
+  vec_foreach (sl_index, t->segments_lists)
+  {
+    segment_list = pool_elt_at_index (sm->sid_lists, *sl_index);
+
+    api_sid_list = &rmp->sid_lists[sl_index - t->segments_lists];
+    api_sid_list->sl_index = htonl (*sl_index);
+    api_sid_list->num_sids = vec_len (segment_list->segments);
+    api_sid_list->weight = htonl (segment_list->weight);
+    slidx = 0;
+    vec_foreach (segment, segment_list->segments)
+    {
+      ip6_address_encode (segment, api_sid_list->sids[slidx++]);
+    }
+  }
+
+  rmp->context = context;
+  vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+  vl_api_sr_policies_with_sl_index_dump_t_handler
+  (vl_api_sr_policies_with_sl_index_dump_t * mp)
+{
+  vl_api_registration_t *reg;
+  ip6_sr_main_t *sm = &sr_main;
+  ip6_sr_policy_t *t;
+
+  reg = vl_api_client_index_to_registration (mp->client_index);
+  if (!reg)
+    return;
+
+  /* *INDENT-OFF* */
+  pool_foreach (t, sm->sr_policies,
+  ({
+    send_sr_policies_details_with_sl_index(t, reg, mp->context);
+  }));
+  /* *INDENT-ON* */
+}
+
 static void send_sr_steering_pol_details
   (ip6_sr_steering_policy_t * t, vl_api_registration_t * reg, u32 context)
 {