SCTP: API to delete a sub-connection

[vpp.git] / src / vnet / sctp / sctp.h

diff --git a/src/vnet/sctp/sctp.h b/src/vnet/sctp/sctp.h
index 048d153..9f17e53 100644 (file)
--- a/src/vnet/sctp/sctp.h
+++ b/src/vnet/sctp/sctp.h
@@ -235,17 +235,33 @@ typedef struct _sctp_connection
 
   sctp_options_t snd_opts;
 
-  u8 next_avail_sub_conn; /**< Represent the index of the next free slot in sub_conn */
+  u8 forming_association_changed; /**< This is a flag indicating whether the original association has been modified during
+                                 the life-span of the association itself. For instance, a new sub-connection might have been added. */
 
 } sctp_connection_t;
 
 typedef void (sctp_timer_expiration_handler) (u32 conn_index, u32 timer_id);
 
 sctp_connection_t *sctp_connection_new (u8 thread_index);
-void sctp_sub_connection_add_ip4 (u8 thread_index,
-                                 sctp_ipv4_addr_param_t * ipv4_addr);
-void sctp_sub_connection_add_ip6 (u8 thread_index,
-                                 sctp_ipv6_addr_param_t * ipv6_addr);
+
+u8
+sctp_sub_connection_add_ip4 (vlib_main_t * vm,
+                            ip4_address_t * lcl_addr,
+                            ip4_address_t * rmt_addr);
+
+u8
+sctp_sub_connection_add_ip6 (vlib_main_t * vm,
+                            ip6_address_t * lcl_addr,
+                            ip6_address_t * rmt_addr);
+
+u8
+sctp_sub_connection_del_ip4 (ip4_address_t * lcl_addr,
+                            ip4_address_t * rmt_addr);
+
+u8
+sctp_sub_connection_del_ip6 (ip6_address_t * lcl_addr,
+                            ip6_address_t * rmt_addr);
+
 void sctp_connection_close (sctp_connection_t * sctp_conn);
 void sctp_connection_cleanup (sctp_connection_t * sctp_conn);
 void sctp_connection_del (sctp_connection_t * sctp_conn);
@@ -280,6 +296,18 @@ void sctp_init_mss (sctp_connection_t * sctp_conn);
 void sctp_prepare_initack_chunk (sctp_connection_t * sctp_conn, u8 idx,
                                 vlib_buffer_t * b, ip4_address_t * ip4_addr,
                                 ip6_address_t * ip6_addr);
+void
+sctp_prepare_initack_chunk_for_collision (sctp_connection_t * sctp_conn,
+                                         u8 idx, vlib_buffer_t * b,
+                                         ip4_address_t * ip4_addr,
+                                         ip6_address_t * ip6_addr);
+void sctp_prepare_abort_for_collision (sctp_connection_t * sctp_conn, u8 idx,
+                                      vlib_buffer_t * b,
+                                      ip4_address_t * ip4_addr,
+                                      ip6_address_t * ip6_addr);
+void
+sctp_prepare_operation_error (sctp_connection_t * sctp_conn, u8 idx,
+                             vlib_buffer_t * b, u8 err_cause);
 void sctp_prepare_cookie_echo_chunk (sctp_connection_t * sctp_conn, u8 idx,
                                     vlib_buffer_t * b,
                                     sctp_state_cookie_param_t * sc);
@@ -292,6 +320,8 @@ void sctp_prepare_heartbeat_ack_chunk (sctp_connection_t * sctp_conn, u8 idx,
 
 u16 sctp_check_outstanding_data_chunks (sctp_connection_t * sctp_conn);
 
+void sctp_api_reference (void);
+
 #define IP_PROTOCOL_SCTP       132
 
 /** SSCTP FSM state definitions as per RFC4960. */
@@ -815,6 +845,19 @@ vlib_buffer_push_sctp (vlib_buffer_t * b, u16 sp_net, u16 dp_net,
                                          sctp_hdr_opts_len);
 }
 
+always_inline u8
+sctp_next_avail_subconn (sctp_connection_t * sctp_conn)
+{
+  u8 i;
+
+  for (i = 0; i < MAX_SCTP_CONNECTIONS; i++)
+    {
+      if (sctp_conn->sub_conn[i].state == SCTP_SUBCONN_STATE_DOWN)
+       return i;
+    }
+  return MAX_SCTP_CONNECTIONS;
+}
+
 always_inline void
 update_smallest_pmtu_idx (sctp_connection_t * sctp_conn)
 {