diff options
Diffstat (limited to 'nsh-plugin/nsh/nsh.h')
| -rw-r--r-- | nsh-plugin/nsh/nsh.h | 124 |
1 files changed, 92 insertions, 32 deletions
diff --git a/nsh-plugin/nsh/nsh.h b/nsh-plugin/nsh/nsh.h index 632a2c4..ee6982b 100644 --- a/nsh-plugin/nsh/nsh.h +++ b/nsh-plugin/nsh/nsh.h @@ -20,10 +20,42 @@ #include <vnet/ip/ip4_packet.h> typedef struct { + u16 class; + u8 type; + u8 pad; +} nsh_option_map_by_key_t; +typedef struct { + u32 option_id; +} nsh_option_map_t; + +#define MAX_METADATA_LEN 62 +/** Note: + * rewrite and rewrite_size used to support varied nsh header + */ +typedef struct { + nsh_base_header_t nsh_base; + union { + nsh_md1_data_t md1_data; + nsh_md2_data_t md2_data; + } md; + u8 tlvs_len; /* configured md2 metadata's length, unit: byte */ + u8 * tlvs_data; /* configured md2 metadata, network order */ + + /** Rewrite string. network order + * contains base header and metadata */ + u8 * rewrite; + u8 rewrite_size; /* unit: byte */ +} nsh_entry_t; + +typedef struct { + u8 is_add; + nsh_entry_t nsh_entry; +} nsh_add_del_entry_args_t; + +typedef struct { /** Key for nsh_header_t entry: 24bit NSP 8bit NSI */ u32 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: @@ -32,48 +64,36 @@ typedef struct { * Note: these are heuristics. Rules about NSI decrement are out of scope */ u32 mapped_nsp_nsi; - /* NSH Header action: swap, push and pop */ u32 nsh_action; - /* vnet intfc sw_if_index */ u32 sw_if_index; - u32 next_node; - } nsh_map_t; typedef struct { + u8 is_add; + nsh_map_t map; +} nsh_add_del_map_args_t; +typedef struct { u32 transport_type; /* 1:vxlan; */ - u32 transport_index; /* transport's sw_if_index */ - } nsh_proxy_session_by_key_t; typedef struct { - /* 24bit NSP 8bit NSI */ u32 nsp_nsi; - } nsh_proxy_session_t; -typedef struct { - nsh_map_t map; - u8 is_add; -} nsh_add_del_map_args_t; - -typedef struct { - u8 is_add; - nsh_header_t nsh; -} nsh_add_del_entry_args_t; +#define MAX_MD2_OPTIONS 256 typedef struct { /* API message ID base */ u16 msg_id_base; /* vector of nsh_header entry instances */ - nsh_header_t *nsh_entries; + nsh_entry_t *nsh_entries; /* hash lookup nsh header by key: {u32: nsp_nsi} */ uword * nsh_entry_by_key; @@ -91,6 +111,30 @@ typedef struct { /* hash lookup nsh_proxy by key */ uword * nsh_proxy_session_by_key; + /* vector of nsh_option_map */ + nsh_option_map_t * nsh_option_mappings; + /* hash lookup nsh_option_map by key */ + uword * nsh_option_map_by_key; + + /* Array of function pointers to process MD-Type 2 handling routines */ + /* + * For API or CLI configuration and construct the rewrite buffer, invokes add_options() function. + * In the encap node, i.e. when performing PUSH nsh header, invokes options() function. + * In the swap node, i.e. when performing SWAP nsh header, invokes swap_options() function. + * In the decap node, i.e. when performing POP nsh header, invokes pop_options() function. + */ + u8 options_size[MAX_MD2_OPTIONS]; /* sum of header and metadata */ + int (*add_options[MAX_MD2_OPTIONS]) (u8 * opt, + u8 * opt_size); + int (*options[MAX_MD2_OPTIONS]) (vlib_buffer_t * b, + nsh_tlv_header_t * opt); + int (*swap_options[MAX_MD2_OPTIONS]) (vlib_buffer_t * b, + nsh_tlv_header_t * old_opt, + nsh_tlv_header_t * new_opt); + int (*pop_options[MAX_MD2_OPTIONS]) (vlib_buffer_t * b, + nsh_tlv_header_t * opt); + u8 *(*trace[MAX_MD2_OPTIONS]) (u8 * s, nsh_tlv_header_t * opt); + /* convenience */ vlib_main_t * vlib_main; vnet_main_t * vnet_main; @@ -102,23 +146,12 @@ u8 * format_nsh_input_map_trace (u8 * s, va_list * args); u8 * format_nsh_header_with_length (u8 * s, va_list * args); /* Helper macros used in nsh.c and nsh_test.c */ -#define foreach_copy_nshhdr_field \ +#define foreach_copy_nsh_base_hdr_field \ _(ver_o_c) \ _(length) \ _(md_type) \ _(next_protocol) \ -_(nsp_nsi) \ -_(c1) \ -_(c2) \ -_(c3) \ -_(c4) -/* TODO Temp killing tlvs as its causing pain - fix in NSH_SFC */ -#define foreach_32bit_field \ -_(nsp_nsi) \ -_(c1) \ -_(c2) \ -_(c3) \ -_(c4) +_(nsp_nsi) /* Statistics (not really errors) */ #define foreach_nsh_node_error \ @@ -127,6 +160,7 @@ _(NO_MAPPING, "no mapping for nsh key") \ _(NO_ENTRY, "no entry for nsh key") \ _(NO_PROXY, "no proxy for transport key") \ _(INVALID_NEXT_PROTOCOL, "invalid next protocol") \ +_(INVALID_OPTIONS, "invalid md2 options") \ typedef enum { #define _(sym,str) NSH_NODE_ERROR_##sym, @@ -143,6 +177,7 @@ typedef enum { _(ENCAP_VXLAN4, "vxlan4-encap" ) \ _(ENCAP_VXLAN6, "vxlan6-encap" ) \ _(DECAP_ETH_INPUT, "ethernet-input" ) \ + _(ENCAP_LISP_GPE, "interface-output" ) \ /* /\* TODO once moved to Project:NSH_SFC *\/ */ /* _(ENCAP_ETHERNET, "*** TX TO ETHERNET ***") \ */ /* _(DECAP_IP4_INPUT, "ip4-input") \ */ @@ -167,4 +202,29 @@ typedef enum { NSH_CLASSIFIER_TYPE, } nsh_entity_type; +/* md2 class and type definition */ +#define NSH_MD2_IOAM_CLASS 0x9 +#define NSH_MD2_IOAM_OPTION_TYPE_TRACE 0x3B +#define NSH_MD2_IOAM_OPTION_TYPE_PROOF_OF_TRANSIT 0x3C + +#define NSH_MD2_IOAM_TRACE_DUMMY_LEN 0x8 + +#define MAX_NSH_HEADER_LEN 256 +#define MAX_NSH_OPTION_LEN 128 + +int +nsh_md2_register_option (u16 class, + u8 type, + u8 option_size, + int add_options (u8 * opt, + u8 * opt_size), + int options(vlib_buffer_t * b, + nsh_tlv_header_t * opt), + int swap_options (vlib_buffer_t * b, + nsh_tlv_header_t * old_opt, + nsh_tlv_header_t * new_opt), + int pop_options (vlib_buffer_t * b, + nsh_tlv_header_t * opt), + u8 * trace (u8 * s, + nsh_tlv_header_t * opt)); #endif /* included_nsh_h */ |