Port NSH plugin to VPP

Please refer to https://wiki.fd.io/view/NSH_SFC

Change-Id: Iba7e33e4dbb064c1527aaddbe8dce4b6b63a627a
Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>
Signed-off-by: Keith Burns (alagalah) <alagalah@gmail.com>

1 files changed, 123 insertions, 0 deletions

diff --git a/src/plugins/nsh/nsh.api b/src/plugins/nsh/nsh.api
new file mode 100644
index 00000000000..6beed00d4e1
--- /dev/null
+++ b/src/plugins/nsh/nsh.api
@@ -0,0 +1,123 @@
+
+
+/** \brief /** \brief Set or delete an NSH header entry keyed by NSP/NSI
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - add address if non-zero, else delete
+    @param nsp_nsi - Key for nsh_header_t entry to map to. : 24bit NSP 8bit NSI 
+    @param md_type - metadata type [1|2] - only MDType1 supported today
+    @param ver_o_c - version, O-bit and C-bit (see nsh_packet.h)
+    @param ttl - indicates the maximum SFF hops for an SFP
+    @param length - header length in n x 32bits, should be 6 for MDtype1
+    @param next_protocol - next protocol encapsulated behind NSH header: 1=Ethernet, 2=IP4, 3=IP6
+    @param c1 - 32bit Metadata type1 field (context1)
+    @param c2 - 32bit Metadata type1 field (context2)
+    @param c3 - 32bit Metadata type1 field (context3)
+    @param c4 - 32bit Metadata type1 field (context4)
+    @param tlvs - Metadata Type 2 only, Type Length Value metadata.
+*/
+define nsh_add_del_entry {
+    u32 client_index;
+    u32 context;
+    u8 is_add;
+    u32 nsp_nsi;
+    u8 md_type;
+    u8 ver_o_c;
+    u8 ttl;
+    u8 length;
+    u8 next_protocol;
+    u32 c1;
+    u32 c2;
+    u32 c3;
+    u32 c4;
+    u8 tlv_length;
+    u8 tlv[248];
+};
+
+/** \brief Reply from adding NSH entry (nsh_add_del_entry)
+    @param context - sender context, to match reply w/ request
+    @param retval - 0 means all ok
+*/
+define nsh_add_del_entry_reply {
+    u32 context;
+    i32 retval;
+    u32 entry_index;
+};
+
+
+define nsh_entry_dump {
+    u32 client_index;
+    u32 context;
+    u32 entry_index;
+};
+
+define nsh_entry_details {
+    u32 context;
+    u32 entry_index;
+    u32 nsp_nsi;
+    u8 md_type;
+    u8 ver_o_c;
+    u8 ttl;
+    u8 length;
+    u8 next_protocol;
+    u32 c1;
+    u32 c2;
+    u32 c3;
+    u32 c4;
+    u8 tlv_length;
+    u8 tlv[248];
+};
+
+/** \brief Set or delete a mapping from one NSH header to another and its egress (decap to inner packet, encap NSH with outer header)
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - add address if non-zero, else delete
+    @param nsh_nsi - Key for nsh_header_t entry to map to. : 24bit NSP 8bit NSI
+    @param mapped_nsp_nsi - Key for nsh_header_t entry to map to. : 24bit NSP 8bit NSI this may be ~0
+       if next action is to decap to NSH next protocol
+       Note the following heuristic:
+       	    - if nsp_nsi == mapped_nsp_nsi then use-case is like SFC SFF
+    	    - if nsp_nsi != mapped_nsp_nsi then use-case is like SFC SF
+       Note: these are heuristics. Rules about NSI decrement are out of scope
+    @param sw_if_index - index number of outer encap for NSH egress
+    @param next_node - explicitly which node to send to
+      Note the above parameters are instantiated by "encap-gre-intf <x>" means sw_if_index x, next_node gre-input
+*/
+define nsh_add_del_map {
+    u32 client_index;
+    u32 context;
+    u8 is_add;
+    u32 nsp_nsi;
+    u32 mapped_nsp_nsi;
+    u32 nsh_action;
+    u32 sw_if_index;
+    u32 rx_sw_if_index;
+    u32 next_node;
+};
+
+/** \brief Reply from adding NSH map (nsh_add_del_map)
+    @param context - sender context, to match reply w/ request
+    @param retval - 0 means all ok
+*/
+define nsh_add_del_map_reply {
+    u32 context;
+    i32 retval;
+    u32 map_index;
+};
+
+define nsh_map_dump {
+    u32 client_index;
+    u32 context;
+    u32 map_index;
+};
+
+define nsh_map_details {
+    u32 context;
+    u32 map_index;
+    u32 nsp_nsi;
+    u32 mapped_nsp_nsi;
+    u32 nsh_action;
+    u32 sw_if_index;
+    u32 rx_sw_if_index;
+    u32 next_node;
+};