#include <vnet/vxlan-gpe/vxlan_gpe.h>
#include <vnet/l2/l2_classify.h>
#include <vnet/adj/adj.h>
-
-#include <vlibapi/api.h>
-#include <vlibmemory/api.h>
#include <vpp/app/version.h>
-/* define message IDs */
-#define vl_msg_id(n,h) n,
-typedef enum
-{
-#include <nsh/nsh.api.h>
- /* We'll want to know how many messages IDs we need... */
- VL_MSG_FIRST_AVAILABLE,
-} vl_msg_id_t;
-#undef vl_msg_id
-
-/* define message structures */
-#define vl_typedefs
-#include <nsh/nsh.api.h>
-#undef vl_typedefs
-
-/* define generated endian-swappers */
-#define vl_endianfun
-#include <nsh/nsh.api.h>
-#undef vl_endianfun
-
-/* instantiate all the print functions we know about */
-#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
-#define vl_printfun
-#include <nsh/nsh.api.h>
-#undef vl_printfun
-
-/* Get the API version number */
-#define vl_api_version(n,v) static u32 api_version=(v);
-#include <nsh/nsh.api.h>
-#undef vl_api_version
-
-#define vl_msg_name_crc_list
-#include <nsh/nsh.api.h>
-#undef vl_msg_name_crc_list
-
-/* Dummy Eth header */
-const char dummy_dst_address[6] = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66 };
-const char dummy_src_address[6] = { 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc };
-
-/*
- * A handy macro to set up a message reply.
- * Assumes that the following variables are available:
- * mp - pointer to request message
- * rmp - pointer to reply message type
- * rv - return value
- */
-
-#define REPLY_MACRO(t) \
- do { \
- unix_shared_memory_queue_t * q = \
- vl_api_client_index_to_input_queue (mp->client_index); \
- if (!q) \
- return; \
- \
- rmp = vl_msg_api_alloc (sizeof (*rmp)); \
- rmp->_vl_msg_id = ntohs((t)+nm->msg_id_base); \
- rmp->context = mp->context; \
- rmp->retval = ntohl(rv); \
- \
- vl_msg_api_send_shmem (q, (u8 *)&rmp); \
- } while(0);
-
-#define REPLY_MACRO2(t, body) \
- do { \
- unix_shared_memory_queue_t * q; \
- rv = vl_msg_api_pd_handler (mp, rv); \
- q = vl_api_client_index_to_input_queue (mp->client_index); \
- if (!q) \
- return; \
- \
- rmp = vl_msg_api_alloc (sizeof (*rmp)); \
- rmp->_vl_msg_id = ntohs((t)+nm->msg_id_base); \
- rmp->context = mp->context; \
- rmp->retval = ntohl(rv); \
- do {body;} while (0); \
- vl_msg_api_send_shmem (q, (u8 *)&rmp); \
- } while(0);
-
-#define FINISH \
- vec_add1 (s, 0); \
- vl_print (handle, (char *)s); \
- vec_free (s); \
- return handle;
-
-/* List of message types that this plugin understands */
-
-#define foreach_nsh_plugin_api_msg \
- _(NSH_ADD_DEL_ENTRY, nsh_add_del_entry) \
- _(NSH_ENTRY_DUMP, nsh_entry_dump) \
- _(NSH_ADD_DEL_MAP, nsh_add_del_map) \
- _(NSH_MAP_DUMP, nsh_map_dump)
+nsh_main_t nsh_main;
- /* Uses network order's class and type to register */
+/* Uses network order's class and type to register */
int
nsh_md2_register_option (u16 class,
u8 type,
return (0);
}
-/* format from network order */
-u8 *
-format_nsh_header (u8 * s, va_list * args)
-{
- nsh_main_t *nm = &nsh_main;
- nsh_md2_data_t *opt0;
- nsh_md2_data_t *limit0;
- nsh_option_map_t *nsh_option;
- u8 option_len = 0;
-
- u8 *header = va_arg (*args, u8 *);
- nsh_base_header_t *nsh_base = (nsh_base_header_t *) header;
- nsh_md1_data_t *nsh_md1 = (nsh_md1_data_t *) (nsh_base + 1);
- nsh_md2_data_t *nsh_md2 = (nsh_md2_data_t *) (nsh_base + 1);
- opt0 = (nsh_md2_data_t *) nsh_md2;
- limit0 = (nsh_md2_data_t *) ((u8 *) nsh_md2 +
- ((nsh_base->length & NSH_LEN_MASK) * 4
- - sizeof (nsh_base_header_t)));
-
- s = format (s, "nsh ver %d ", (nsh_base->ver_o_c >> 6));
- if (nsh_base->ver_o_c & NSH_O_BIT)
- s = format (s, "O-set ");
-
- if (nsh_base->ver_o_c & NSH_C_BIT)
- s = format (s, "C-set ");
-
- s = format (s, "ttl %d ", (nsh_base->ver_o_c & NSH_TTL_H4_MASK) << 2 |
- (nsh_base->length & NSH_TTL_L2_MASK) >> 6);
-
- s = format (s, "len %d (%d bytes) md_type %d next_protocol %d\n",
- (nsh_base->length & NSH_LEN_MASK),
- (nsh_base->length & NSH_LEN_MASK) * 4,
- nsh_base->md_type, nsh_base->next_protocol);
-
- s = format (s, " service path %d service index %d\n",
- (clib_net_to_host_u32 (nsh_base->nsp_nsi) >> NSH_NSP_SHIFT) &
- NSH_NSP_MASK,
- clib_net_to_host_u32 (nsh_base->nsp_nsi) & NSH_NSI_MASK);
-
- if (nsh_base->md_type == 1)
- {
- s = format (s, " c1 %d c2 %d c3 %d c4 %d\n",
- clib_net_to_host_u32 (nsh_md1->c1),
- clib_net_to_host_u32 (nsh_md1->c2),
- clib_net_to_host_u32 (nsh_md1->c3),
- clib_net_to_host_u32 (nsh_md1->c4));
- }
- else if (nsh_base->md_type == 2)
- {
- s = format (s, " Supported TLVs: \n");
-
- /* Scan the set of variable metadata, network order */
- while (opt0 < limit0)
- {
- nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
- if (nsh_option != NULL)
- {
- if (nm->trace[nsh_option->option_id] != NULL)
- {
- s = (*nm->trace[nsh_option->option_id]) (s, opt0);
- }
- else
- {
- s =
- format (s, "\n untraced option %d length %d",
- opt0->type, opt0->length);
- }
- }
- else
- {
- s =
- format (s, "\n unrecognized option %d length %d",
- opt0->type, opt0->length);
- }
-
- /* round to 4-byte */
- option_len = ((opt0->length + 3) >> 2) << 2;
- opt0 =
- (nsh_md2_data_t *) (((u8 *) opt0) + sizeof (nsh_md2_data_t) +
- option_len);
- }
- }
-
- return s;
-}
-
-static u8 *
-format_nsh_action (u8 * s, va_list * args)
-{
- u32 nsh_action = va_arg (*args, u32);
-
- switch (nsh_action)
- {
- case NSH_ACTION_SWAP:
- return format (s, "swap");
- case NSH_ACTION_PUSH:
- return format (s, "push");
- case NSH_ACTION_POP:
- return format (s, "pop");
- default:
- return format (s, "unknown %d", nsh_action);
- }
- return s;
-}
-
-u8 *
-format_nsh_map (u8 * s, va_list * args)
-{
- nsh_map_t *map = va_arg (*args, nsh_map_t *);
-
- s = format (s, "nsh entry nsp: %d nsi: %d ",
- (map->nsp_nsi >> NSH_NSP_SHIFT) & NSH_NSP_MASK,
- map->nsp_nsi & NSH_NSI_MASK);
- s = format (s, "maps to nsp: %d nsi: %d ",
- (map->mapped_nsp_nsi >> NSH_NSP_SHIFT) & NSH_NSP_MASK,
- map->mapped_nsp_nsi & NSH_NSI_MASK);
-
- s = format (s, " nsh_action %U\n", format_nsh_action, map->nsh_action);
-
- switch (map->next_node)
- {
- case NSH_NODE_NEXT_ENCAP_GRE4:
- {
- s = format (s, "encapped by GRE4 intf: %d", map->sw_if_index);
- break;
- }
- case NSH_NODE_NEXT_ENCAP_GRE6:
- {
- s = format (s, "encapped by GRE6 intf: %d", map->sw_if_index);
- break;
- }
- case NSH_NODE_NEXT_ENCAP_VXLANGPE:
- {
- s = format (s, "encapped by VXLAN GPE intf: %d", map->sw_if_index);
- break;
- }
- case NSH_NODE_NEXT_ENCAP_VXLAN4:
- {
- s = format (s, "encapped by VXLAN4 intf: %d", map->sw_if_index);
- break;
- }
- case NSH_NODE_NEXT_ENCAP_VXLAN6:
- {
- s = format (s, "encapped by VXLAN6 intf: %d", map->sw_if_index);
- break;
- }
- case NSH_NODE_NEXT_DECAP_ETH_INPUT:
- {
- s = format (s, "encap-none");
- break;
- }
- case NSH_NODE_NEXT_ENCAP_LISP_GPE:
- {
- s = format (s, "encapped by LISP GPE intf: %d", map->sw_if_index);
- break;
- }
- case NSH_NODE_NEXT_ENCAP_ETHERNET:
- {
- s = format (s, "encapped by Ethernet intf: %d", map->sw_if_index);
- break;
- }
- default:
- s = format (s, "only GRE and VXLANGPE support in this rev");
- }
-
- return s;
-}
-
-u8 *
-format_nsh_node_map_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 *);
- nsh_input_trace_t *t = va_arg (*args, nsh_input_trace_t *);
-
- s = format (s, "\n %U", format_nsh_header, &(t->trace_data));
-
- return s;
-}
-
/**
* @brief Naming for NSH tunnel
*
return frame->n_vectors;
}
-VNET_DEVICE_CLASS (nsh_device_class, static) =
-{
-.name = "NSH",.format_device_name = format_nsh_name,.tx_function =
- dummy_interface_tx,.admin_up_down_function =
- nsh_interface_admin_up_down,};
+/* *INDENT-OFF* */
+VNET_DEVICE_CLASS (nsh_device_class, static) = {
+ .name = "NSH",
+ .format_device_name = format_nsh_name,
+ .tx_function = dummy_interface_tx,
+ .admin_up_down_function = nsh_interface_admin_up_down,
+};
+/* *INDENT-ON* */
/**
* @brief Formatting function for tracing VXLAN GPE with length
return s;
}
-VNET_HW_INTERFACE_CLASS (nsh_hw_class) =
-{
-.name = "NSH",.format_header =
- format_nsh_tunnel_with_length,.build_rewrite =
- default_build_rewrite,.flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,};
-
-
-/**
- * Action function to add or del an nsh map.
- * Shared by both CLI and binary API
- **/
-
-int
-nsh_add_del_map (nsh_add_del_map_args_t * a, u32 * map_indexp)
-{
- nsh_main_t *nm = &nsh_main;
- vnet_main_t *vnm = nm->vnet_main;
- nsh_map_t *map = 0;
- u32 key, *key_copy;
- uword *entry;
- hash_pair_t *hp;
- u32 map_index = ~0;
- vnet_hw_interface_t *hi;
- u32 nsh_hw_if = ~0;
- u32 nsh_sw_if = ~0;
-
- /* net order, so data plane could use nsh header to lookup directly */
- key = clib_host_to_net_u32 (a->map.nsp_nsi);
-
- entry = hash_get_mem (nm->nsh_mapping_by_key, &key);
-
- if (a->is_add)
- {
- /* adding an entry, must not already exist */
- if (entry)
- return -1; //TODO API_ERROR_INVALID_VALUE;
-
- pool_get_aligned (nm->nsh_mappings, map, CLIB_CACHE_LINE_BYTES);
- clib_memset (map, 0, sizeof (*map));
-
- /* copy from arg structure */
- map->nsp_nsi = a->map.nsp_nsi;
- map->mapped_nsp_nsi = a->map.mapped_nsp_nsi;
- map->nsh_action = a->map.nsh_action;
- map->sw_if_index = a->map.sw_if_index;
- map->rx_sw_if_index = a->map.rx_sw_if_index;
- map->next_node = a->map.next_node;
- map->adj_index = a->map.adj_index;
-
-
- key_copy = clib_mem_alloc (sizeof (*key_copy));
- clib_memcpy (key_copy, &key, sizeof (*key_copy));
-
- hash_set_mem (nm->nsh_mapping_by_key, key_copy, map - nm->nsh_mappings);
- map_index = map - nm->nsh_mappings;
-
- if (vec_len (nm->free_nsh_tunnel_hw_if_indices) > 0)
- {
- nsh_hw_if = nm->free_nsh_tunnel_hw_if_indices
- [vec_len (nm->free_nsh_tunnel_hw_if_indices) - 1];
- _vec_len (nm->free_nsh_tunnel_hw_if_indices) -= 1;
-
- hi = vnet_get_hw_interface (vnm, nsh_hw_if);
- hi->dev_instance = map_index;
- hi->hw_instance = hi->dev_instance;
- }
- else
- {
- nsh_hw_if = vnet_register_interface
- (vnm, nsh_device_class.index, map_index, nsh_hw_class.index,
- map_index);
- hi = vnet_get_hw_interface (vnm, nsh_hw_if);
- hi->output_node_index = nsh_aware_vnf_proxy_node.index;
- }
-
- map->nsh_hw_if = nsh_hw_if;
- map->nsh_sw_if = nsh_sw_if = hi->sw_if_index;
- vec_validate_init_empty (nm->tunnel_index_by_sw_if_index, nsh_sw_if,
- ~0);
- nm->tunnel_index_by_sw_if_index[nsh_sw_if] = key;
-
- vnet_sw_interface_set_flags (vnm, hi->sw_if_index,
- VNET_SW_INTERFACE_FLAG_ADMIN_UP);
- }
- else
- {
- if (!entry)
- return -2; //TODO API_ERROR_NO_SUCH_ENTRY;
-
- map = pool_elt_at_index (nm->nsh_mappings, entry[0]);
-
- vnet_sw_interface_set_flags (vnm, map->nsh_sw_if,
- VNET_SW_INTERFACE_FLAG_ADMIN_DOWN);
- vec_add1 (nm->free_nsh_tunnel_hw_if_indices, map->nsh_sw_if);
- nm->tunnel_index_by_sw_if_index[map->nsh_sw_if] = ~0;
-
- hp = hash_get_pair (nm->nsh_mapping_by_key, &key);
- key_copy = (void *) (hp->key);
- hash_unset_mem (nm->nsh_mapping_by_key, &key);
- clib_mem_free (key_copy);
-
- pool_put (nm->nsh_mappings, map);
- }
-
- if (map_indexp)
- *map_indexp = map_index;
-
- return 0;
-}
-
-/**
- * Action function to add or del an nsh-proxy-session.
- * Shared by both CLI and binary API
- **/
-
-int
-nsh_add_del_proxy_session (nsh_add_del_map_args_t * a)
-{
- nsh_main_t *nm = &nsh_main;
- nsh_proxy_session_t *proxy = 0;
- nsh_proxy_session_by_key_t key, *key_copy;
- uword *entry;
- hash_pair_t *hp;
- u32 nsp = 0, nsi = 0;
-
- clib_memset (&key, 0, sizeof (key));
- key.transport_type = a->map.next_node;
- key.transport_index = a->map.sw_if_index;
-
- entry = hash_get_mem (nm->nsh_proxy_session_by_key, &key);
-
- if (a->is_add)
- {
- /* adding an entry, must not already exist */
- if (entry)
- return -1; //TODO API_ERROR_INVALID_VALUE;
-
- pool_get_aligned (nm->nsh_proxy_sessions, proxy, CLIB_CACHE_LINE_BYTES);
- clib_memset (proxy, 0, sizeof (*proxy));
-
- /* Nsi needs to minus 1 within NSH-Proxy */
- nsp = (a->map.nsp_nsi >> NSH_NSP_SHIFT) & NSH_NSP_MASK;
- nsi = a->map.nsp_nsi & NSH_NSI_MASK;
- if (nsi == 0)
- return -1;
-
- nsi = nsi - 1;
- /* net order, so could use it to lookup nsh map table directly */
- proxy->nsp_nsi = clib_host_to_net_u32 ((nsp << NSH_NSP_SHIFT) | nsi);
-
- key_copy = clib_mem_alloc (sizeof (*key_copy));
- clib_memcpy (key_copy, &key, sizeof (*key_copy));
-
- hash_set_mem (nm->nsh_proxy_session_by_key, key_copy,
- proxy - nm->nsh_proxy_sessions);
- }
- else
- {
- if (!entry)
- return -2; //TODO API_ERROR_NO_SUCH_ENTRY;
-
- proxy = pool_elt_at_index (nm->nsh_proxy_sessions, entry[0]);
- hp = hash_get_pair (nm->nsh_proxy_session_by_key, &key);
- key_copy = (void *) (hp->key);
- hash_unset_mem (nm->nsh_proxy_session_by_key, &key);
- clib_mem_free (key_copy);
-
- pool_put (nm->nsh_proxy_sessions, proxy);
- }
-
- return 0;
-}
-
-/**
- * CLI command for NSH map
- */
-
-static uword
-unformat_nsh_action (unformat_input_t * input, va_list * args)
-{
- u32 *result = va_arg (*args, u32 *);
- u32 tmp;
-
- if (unformat (input, "swap"))
- *result = NSH_ACTION_SWAP;
- else if (unformat (input, "push"))
- *result = NSH_ACTION_PUSH;
- else if (unformat (input, "pop"))
- *result = NSH_ACTION_POP;
- else if (unformat (input, "%d", &tmp))
- *result = tmp;
- else
- return 0;
-
- return 1;
-}
-
-static adj_index_t
-nsh_get_adj_by_sw_if_index (u32 sw_if_index)
-{
- adj_index_t ai = ~0;
-
- /* *INDENT-OFF* */
- pool_foreach_index(ai, adj_pool,
- ({
- if (sw_if_index == adj_get_sw_if_index(ai))
- {
- return ai;
- }
- }));
- /* *INDENT-ON* */
-
- return ~0;
-}
-
-static clib_error_t *
-nsh_add_del_map_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, *line_input = &_line_input;
- u8 is_add = 1;
- u32 nsp, nsi, mapped_nsp, mapped_nsi, nsh_action;
- int nsp_set = 0, nsi_set = 0, mapped_nsp_set = 0, mapped_nsi_set = 0;
- int nsh_action_set = 0;
- u32 next_node = ~0;
- u32 adj_index = ~0;
- u32 sw_if_index = ~0; // temporary requirement to get this moved over to NSHSFC
- u32 rx_sw_if_index = ~0; // temporary requirement to get this moved over to NSHSFC
- nsh_add_del_map_args_t _a, *a = &_a;
- u32 map_index;
- int rv;
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (line_input, "del"))
- is_add = 0;
- else if (unformat (line_input, "nsp %d", &nsp))
- nsp_set = 1;
- else if (unformat (line_input, "nsi %d", &nsi))
- nsi_set = 1;
- else if (unformat (line_input, "mapped-nsp %d", &mapped_nsp))
- mapped_nsp_set = 1;
- else if (unformat (line_input, "mapped-nsi %d", &mapped_nsi))
- mapped_nsi_set = 1;
- else if (unformat (line_input, "nsh_action %U", unformat_nsh_action,
- &nsh_action))
- nsh_action_set = 1;
- else if (unformat (line_input, "encap-gre4-intf %d", &sw_if_index))
- next_node = NSH_NODE_NEXT_ENCAP_GRE4;
- else if (unformat (line_input, "encap-gre6-intf %d", &sw_if_index))
- next_node = NSH_NODE_NEXT_ENCAP_GRE6;
- else if (unformat (line_input, "encap-vxlan-gpe-intf %d", &sw_if_index))
- next_node = NSH_NODE_NEXT_ENCAP_VXLANGPE;
- else if (unformat (line_input, "encap-lisp-gpe-intf %d", &sw_if_index))
- next_node = NSH_NODE_NEXT_ENCAP_LISP_GPE;
- else if (unformat (line_input, "encap-vxlan4-intf %d", &sw_if_index))
- next_node = NSH_NODE_NEXT_ENCAP_VXLAN4;
- else if (unformat (line_input, "encap-vxlan6-intf %d", &sw_if_index))
- next_node = NSH_NODE_NEXT_ENCAP_VXLAN6;
- else if (unformat (line_input, "encap-eth-intf %d", &sw_if_index))
- {
- next_node = NSH_NODE_NEXT_ENCAP_ETHERNET;
- adj_index = nsh_get_adj_by_sw_if_index (sw_if_index);
- }
- else
- if (unformat
- (line_input, "encap-none %d %d", &sw_if_index, &rx_sw_if_index))
- next_node = NSH_NODE_NEXT_DECAP_ETH_INPUT;
- else
- return clib_error_return (0, "parse error: '%U'",
- format_unformat_error, line_input);
- }
-
- unformat_free (line_input);
-
- if (nsp_set == 0 || nsi_set == 0)
- return clib_error_return (0, "nsp nsi pair required. Key: for NSH entry");
-
- if (mapped_nsp_set == 0 || mapped_nsi_set == 0)
- return clib_error_return (0,
- "mapped-nsp mapped-nsi pair required. Key: for NSH entry");
-
- if (nsh_action_set == 0)
- return clib_error_return (0, "nsh_action required: swap|push|pop.");
-
- if (next_node == ~0)
- return clib_error_return (0,
- "must specific action: [encap-gre-intf <nn> | encap-vxlan-gpe-intf <nn> | encap-lisp-gpe-intf <nn> | encap-none <tx_sw_if_index> <rx_sw_if_index>]");
-
- clib_memset (a, 0, sizeof (*a));
-
- /* set args structure */
- a->is_add = is_add;
- a->map.nsp_nsi = (nsp << NSH_NSP_SHIFT) | nsi;
- a->map.mapped_nsp_nsi = (mapped_nsp << NSH_NSP_SHIFT) | mapped_nsi;
- a->map.nsh_action = nsh_action;
- a->map.sw_if_index = sw_if_index;
- a->map.rx_sw_if_index = rx_sw_if_index;
- a->map.next_node = next_node;
- a->map.adj_index = adj_index;
-
- rv = nsh_add_del_map (a, &map_index);
-
- switch (rv)
- {
- case 0:
- break;
- case -1: //TODO API_ERROR_INVALID_VALUE:
- return clib_error_return (0,
- "mapping already exists. Remove it first.");
-
- case -2: // TODO API_ERROR_NO_SUCH_ENTRY:
- return clib_error_return (0, "mapping does not exist.");
-
- default:
- return clib_error_return (0, "nsh_add_del_map returned %d", rv);
- }
-
- if ((a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN4)
- | (a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN6))
- {
- rv = nsh_add_del_proxy_session (a);
-
- switch (rv)
- {
- case 0:
- break;
- case -1: //TODO API_ERROR_INVALID_VALUE:
- return clib_error_return (0,
- "nsh-proxy-session already exists. Remove it first.");
-
- case -2: // TODO API_ERROR_NO_SUCH_ENTRY:
- return clib_error_return (0, "nsh-proxy-session does not exist.");
-
- default:
- return clib_error_return
- (0, "nsh_add_del_proxy_session() returned %d", rv);
- }
- }
-
- return 0;
-}
-
-VLIB_CLI_COMMAND (create_nsh_map_command, static) =
-{
-.path = "create nsh map",.short_help =
- "create nsh map nsp <nn> nsi <nn> [del] mapped-nsp <nn> mapped-nsi <nn> nsh_action [swap|push|pop] "
- "[encap-gre4-intf <nn> | encap-gre4-intf <nn> | encap-vxlan-gpe-intf <nn> | encap-lisp-gpe-intf <nn> "
- " encap-vxlan4-intf <nn> | encap-vxlan6-intf <nn>| encap-eth-intf <nn> | encap-none]\n",.function
- = nsh_add_del_map_command_fn,};
-
-/** API message handler */
-static void
-vl_api_nsh_add_del_map_t_handler (vl_api_nsh_add_del_map_t * mp)
-{
- vl_api_nsh_add_del_map_reply_t *rmp;
- nsh_main_t *nm = &nsh_main;
- int rv;
- nsh_add_del_map_args_t _a, *a = &_a;
- u32 map_index = ~0;
-
- a->is_add = mp->is_add;
- a->map.nsp_nsi = ntohl (mp->nsp_nsi);
- a->map.mapped_nsp_nsi = ntohl (mp->mapped_nsp_nsi);
- a->map.nsh_action = ntohl (mp->nsh_action);
- a->map.sw_if_index = ntohl (mp->sw_if_index);
- a->map.rx_sw_if_index = ntohl (mp->rx_sw_if_index);
- a->map.next_node = ntohl (mp->next_node);
-
- rv = nsh_add_del_map (a, &map_index);
-
- if ((a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN4)
- | (a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN6))
- {
- rv = nsh_add_del_proxy_session (a);
- }
-
- REPLY_MACRO2 (VL_API_NSH_ADD_DEL_MAP_REPLY, (
- {
- rmp->map_index =
- htonl (map_index);
- }
- ));
-}
+/* *INDENT-OFF* */
+VNET_HW_INTERFACE_CLASS (nsh_hw_class) = {
+ .name = "NSH",
+ .format_header = format_nsh_tunnel_with_length,
+ .build_rewrite = default_build_rewrite,
+ .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
+};
+/* *INDENT-ON* */
-/**
- * CLI command for showing the mapping between NSH entries
- */
-static clib_error_t *
-show_nsh_map_command_fn (vlib_main_t * vm,
- unformat_input_t * input, vlib_cli_command_t * cmd)
+void
+nsh_md2_set_next_ioam_export_override (uword next)
{
- nsh_main_t *nm = &nsh_main;
- nsh_map_t *map;
-
- if (pool_elts (nm->nsh_mappings) == 0)
- vlib_cli_output (vm, "No nsh maps configured.");
-
- pool_foreach (map, nm->nsh_mappings, (
- {
- vlib_cli_output (vm, "%U",
- format_nsh_map,
- map);
- }
- ));
-
- return 0;
+ nsh_main_t *hm = &nsh_main;
+ hm->decap_v4_next_override = next;
+ return;
}
-VLIB_CLI_COMMAND (show_nsh_map_command, static) =
-{
-.path = "show nsh map",.function = show_nsh_map_command_fn,};
-
-int
-nsh_header_rewrite (nsh_entry_t * nsh_entry)
+clib_error_t *
+nsh_init (vlib_main_t * vm)
{
- u8 *rw = 0;
- int len = 0;
- nsh_base_header_t *nsh_base;
- nsh_md1_data_t *nsh_md1;
+ vlib_node_t *node;
nsh_main_t *nm = &nsh_main;
- nsh_md2_data_t *opt0;
- nsh_md2_data_t *limit0;
- nsh_md2_data_t *nsh_md2;
- nsh_option_map_t _nsh_option, *nsh_option = &_nsh_option;
- u8 old_option_size = 0;
- u8 new_option_size = 0;
-
- vec_free (nsh_entry->rewrite);
- if (nsh_entry->nsh_base.md_type == 1)
- {
- len = sizeof (nsh_base_header_t) + sizeof (nsh_md1_data_t);
- }
- else if (nsh_entry->nsh_base.md_type == 2)
- {
- /* set to maxim, maybe dataplane will add more TLVs */
- len = MAX_NSH_HEADER_LEN;
- }
- vec_validate_aligned (rw, len - 1, CLIB_CACHE_LINE_BYTES);
- clib_memset (rw, 0, len);
-
- nsh_base = (nsh_base_header_t *) rw;
- nsh_base->ver_o_c = nsh_entry->nsh_base.ver_o_c;
- nsh_base->length = nsh_entry->nsh_base.length;
- nsh_base->md_type = nsh_entry->nsh_base.md_type;
- nsh_base->next_protocol = nsh_entry->nsh_base.next_protocol;
- nsh_base->nsp_nsi = clib_host_to_net_u32 (nsh_entry->nsh_base.nsp_nsi);
-
- if (nsh_base->md_type == 1)
- {
- nsh_md1 = (nsh_md1_data_t *) (rw + sizeof (nsh_base_header_t));
- nsh_md1->c1 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c1);
- nsh_md1->c2 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c2);
- nsh_md1->c3 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c3);
- nsh_md1->c4 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c4);
- nsh_entry->rewrite_size = 24;
- }
- else if (nsh_base->md_type == 2)
- {
- opt0 = (nsh_md2_data_t *) (nsh_entry->tlvs_data);
- limit0 = (nsh_md2_data_t *) ((u8 *) opt0 + nsh_entry->tlvs_len);
-
- nsh_md2 = (nsh_md2_data_t *) (rw + sizeof (nsh_base_header_t));
- nsh_entry->rewrite_size = sizeof (nsh_base_header_t);
-
- while (opt0 < limit0)
- {
- old_option_size = sizeof (nsh_md2_data_t) + opt0->length;
- /* round to 4-byte */
- old_option_size = ((old_option_size + 3) >> 2) << 2;
+ clib_error_t *error = 0;
+ uword next_node;
- nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
- if (nsh_option == NULL)
- {
- goto next_tlv_md2;
- }
+ /* Init the main structures from VPP */
+ nm->vlib_main = vm;
+ nm->vnet_main = vnet_get_main ();
- if (nm->add_options[nsh_option->option_id] != NULL)
- {
- if (0 != nm->add_options[nsh_option->option_id] ((u8 *) nsh_md2,
- &new_option_size))
- {
- goto next_tlv_md2;
- }
+ /* Various state maintenance mappings */
+ nm->nsh_mapping_by_key = hash_create_mem (0, sizeof (u32), sizeof (uword));
- /* round to 4-byte */
- new_option_size = ((new_option_size + 3) >> 2) << 2;
+ nm->nsh_mapping_by_mapped_key
+ = hash_create_mem (0, sizeof (u32), sizeof (uword));
- nsh_entry->rewrite_size += new_option_size;
- nsh_md2 =
- (nsh_md2_data_t *) (((u8 *) nsh_md2) + new_option_size);
- opt0 = (nsh_md2_data_t *) (((u8 *) opt0) + old_option_size);
- }
- else
- {
- next_tlv_md2:
- opt0 = (nsh_md2_data_t *) (((u8 *) opt0) + old_option_size);
- }
+ nm->nsh_entry_by_key = hash_create_mem (0, sizeof (u32), sizeof (uword));
- }
- }
+ nm->nsh_proxy_session_by_key
+ =
+ hash_create_mem (0, sizeof (nsh_proxy_session_by_key_t), sizeof (uword));
- nsh_entry->rewrite = rw;
- nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) |
- ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK);
+ nm->nsh_option_map_by_key
+ = hash_create_mem (0, sizeof (nsh_option_map_by_key_t), sizeof (uword));
- return 0;
-}
+ error = nsh_api_init (vm, nm);
+ if (error)
+ return error;
+ node = vlib_get_node_by_name (vm, (u8 *) "nsh-input");
+ nm->nsh_input_node_index = node->index;
-/**
- * Action function for adding an NSH entry
- * nsh_add_del_entry_args_t *a: host order
- */
+ node = vlib_get_node_by_name (vm, (u8 *) "nsh-proxy");
+ nm->nsh_proxy_node_index = node->index;
-int
-nsh_add_del_entry (nsh_add_del_entry_args_t * a, u32 * entry_indexp)
-{
- nsh_main_t *nm = &nsh_main;
- nsh_entry_t *nsh_entry = 0;
- u32 key, *key_copy;
- uword *entry_id;
- hash_pair_t *hp;
- u32 entry_index = ~0;
- u8 tlvs_len = 0;
- u8 *data = 0;
+ node = vlib_get_node_by_name (vm, (u8 *) "nsh-classifier");
+ nm->nsh_classifier_node_index = node->index;
- /* host order, because nsh map table stores nsp_nsi in host order */
- key = a->nsh_entry.nsh_base.nsp_nsi;
+ /* Add dispositions to nodes that feed nsh-input */
+ //alagalah - validate we don't really need to use the node value
+ next_node =
+ vlib_node_add_next (vm, vxlan4_gpe_input_node.index,
+ nm->nsh_input_node_index);
+ vlib_node_add_next (vm, vxlan4_gpe_input_node.index,
+ nm->nsh_proxy_node_index);
+ vlib_node_add_next (vm, vxlan4_gpe_input_node.index,
+ nsh_aware_vnf_proxy_node.index);
+ vxlan_gpe_register_decap_protocol (VXLAN_GPE_PROTOCOL_NSH, next_node);
- entry_id = hash_get_mem (nm->nsh_entry_by_key, &key);
+ vlib_node_add_next (vm, vxlan6_gpe_input_node.index,
+ nm->nsh_input_node_index);
+ vlib_node_add_next (vm, vxlan6_gpe_input_node.index,
+ nm->nsh_proxy_node_index);
+ vlib_node_add_next (vm, vxlan6_gpe_input_node.index,
+ nsh_aware_vnf_proxy_node.index);
- if (a->is_add)
- {
- /* adding an entry, must not already exist */
- if (entry_id)
- return -1; // TODO VNET_API_ERROR_INVALID_VALUE;
+ vlib_node_add_next (vm, gre4_input_node.index, nm->nsh_input_node_index);
+ vlib_node_add_next (vm, gre4_input_node.index, nm->nsh_proxy_node_index);
+ vlib_node_add_next (vm, gre4_input_node.index,
+ nsh_aware_vnf_proxy_node.index);
- pool_get_aligned (nm->nsh_entries, nsh_entry, CLIB_CACHE_LINE_BYTES);
- clib_memset (nsh_entry, 0, sizeof (*nsh_entry));
+ vlib_node_add_next (vm, gre6_input_node.index, nm->nsh_input_node_index);
+ vlib_node_add_next (vm, gre6_input_node.index, nm->nsh_proxy_node_index);
+ vlib_node_add_next (vm, gre6_input_node.index,
+ nsh_aware_vnf_proxy_node.index);
- /* copy from arg structure */
-#define _(x) nsh_entry->nsh_base.x = a->nsh_entry.nsh_base.x;
- foreach_copy_nsh_base_hdr_field;
-#undef _
+ /* Add NSH-Proxy support */
+ vlib_node_add_next (vm, vxlan4_input_node.index, nm->nsh_proxy_node_index);
+ vlib_node_add_next (vm, vxlan6_input_node.index, nm->nsh_proxy_node_index);
- if (a->nsh_entry.nsh_base.md_type == 1)
- {
- nsh_entry->md.md1_data.c1 = a->nsh_entry.md.md1_data.c1;
- nsh_entry->md.md1_data.c2 = a->nsh_entry.md.md1_data.c2;
- nsh_entry->md.md1_data.c3 = a->nsh_entry.md.md1_data.c3;
- nsh_entry->md.md1_data.c4 = a->nsh_entry.md.md1_data.c4;
- }
- else if (a->nsh_entry.nsh_base.md_type == 2)
- {
- vec_free (nsh_entry->tlvs_data);
- tlvs_len = a->nsh_entry.tlvs_len;
- vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES);
-
- clib_memcpy (data, a->nsh_entry.tlvs_data, tlvs_len);
- nsh_entry->tlvs_data = data;
- nsh_entry->tlvs_len = tlvs_len;
- vec_free (a->nsh_entry.tlvs_data);
- }
-
- nsh_header_rewrite (nsh_entry);
-
- key_copy = clib_mem_alloc (sizeof (*key_copy));
- clib_memcpy (key_copy, &key, sizeof (*key_copy));
-
- hash_set_mem (nm->nsh_entry_by_key, key_copy,
- nsh_entry - nm->nsh_entries);
- entry_index = nsh_entry - nm->nsh_entries;
- }
- else
- {
- if (!entry_id)
- return -2; //TODO API_ERROR_NO_SUCH_ENTRY;
-
- nsh_entry = pool_elt_at_index (nm->nsh_entries, entry_id[0]);
- hp = hash_get_pair (nm->nsh_entry_by_key, &key);
- key_copy = (void *) (hp->key);
- hash_unset_mem (nm->nsh_entry_by_key, &key);
- clib_mem_free (key_copy);
-
- vec_free (nsh_entry->tlvs_data);
- vec_free (nsh_entry->rewrite);
- pool_put (nm->nsh_entries, nsh_entry);
- }
-
- if (entry_indexp)
- *entry_indexp = entry_index;
-
- return 0;
-}
-
-
-/**
- * CLI command for adding NSH entry
- */
-
-static clib_error_t *
-nsh_add_del_entry_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, *line_input = &_line_input;
- u8 is_add = 1;
- u8 ver_o_c = 0;
- u8 ttl = 63;
- u8 length = 0;
- u8 md_type = 0;
- u8 next_protocol = 1; /* default: ip4 */
- u32 nsp;
- u8 nsp_set = 0;
- u32 nsi;
- u8 nsi_set = 0;
- u32 nsp_nsi;
- u32 c1 = 0;
- u32 c2 = 0;
- u32 c3 = 0;
- u32 c4 = 0;
- u8 *data = 0;
- nsh_tlv_header_t tlv_header;
- u8 cur_len = 0, tlvs_len = 0;
- u8 *current;
- nsh_main_t *nm = &nsh_main;
- nsh_option_map_t _nsh_option, *nsh_option = &_nsh_option;
- u8 option_size = 0;
- u32 tmp;
- int rv;
- u32 entry_index;
- nsh_add_del_entry_args_t _a, *a = &_a;
- u8 has_ioam_trace_option = 0;
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (line_input, "del"))
- is_add = 0;
- else if (unformat (line_input, "version %d", &tmp))
- ver_o_c |= (tmp & 3) << 6;
- else if (unformat (line_input, "o-bit %d", &tmp))
- ver_o_c |= (tmp & 1) << 5;
- else if (unformat (line_input, "c-bit %d", &tmp))
- ver_o_c |= (tmp & 1) << 4;
- else if (unformat (line_input, "ttl %d", &ttl))
- ver_o_c |= (ttl & NSH_LEN_MASK) >> 2;
- else if (unformat (line_input, "md-type %d", &tmp))
- md_type = tmp;
- else if (unformat (line_input, "next-ip4"))
- next_protocol = 1;
- else if (unformat (line_input, "next-ip6"))
- next_protocol = 2;
- else if (unformat (line_input, "next-ethernet"))
- next_protocol = 3;
- else if (unformat (line_input, "c1 %d", &c1))
- ;
- else if (unformat (line_input, "c2 %d", &c2))
- ;
- else if (unformat (line_input, "c3 %d", &c3))
- ;
- else if (unformat (line_input, "c4 %d", &c4))
- ;
- else if (unformat (line_input, "nsp %d", &nsp))
- nsp_set = 1;
- else if (unformat (line_input, "nsi %d", &nsi))
- nsi_set = 1;
- else if (unformat (line_input, "tlv-ioam-trace"))
- has_ioam_trace_option = 1;
- else
- return clib_error_return (0, "parse error: '%U'",
- format_unformat_error, line_input);
- }
-
- unformat_free (line_input);
-
- if (nsp_set == 0)
- return clib_error_return (0, "nsp not specified");
-
- if (nsi_set == 0)
- return clib_error_return (0, "nsi not specified");
-
- if (md_type == 1 && has_ioam_trace_option == 1)
- return clib_error_return (0, "Invalid MD Type");
-
- nsp_nsi = (nsp << 8) | nsi;
-
- clib_memset (a, 0, sizeof (*a));
- a->is_add = is_add;
-
- if (md_type == 1)
- {
- a->nsh_entry.md.md1_data.c1 = c1;
- a->nsh_entry.md.md1_data.c2 = c2;
- a->nsh_entry.md.md1_data.c3 = c3;
- a->nsh_entry.md.md1_data.c4 = c4;
- length = (sizeof (nsh_base_header_t) + sizeof (nsh_md1_data_t)) >> 2;
- }
- else if (md_type == 2)
- {
- length = sizeof (nsh_base_header_t) >> 2;
-
- vec_free (a->nsh_entry.tlvs_data);
- tlvs_len = (MAX_METADATA_LEN << 2);
- vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES);
- a->nsh_entry.tlvs_data = data;
- current = data;
-
- if (has_ioam_trace_option)
- {
- tlv_header.class = clib_host_to_net_u16 (NSH_MD2_IOAM_CLASS);
- tlv_header.type = NSH_MD2_IOAM_OPTION_TYPE_TRACE;
- /* Uses network order's class and type to lookup */
- nsh_option =
- nsh_md2_lookup_option (tlv_header.class, tlv_header.type);
- if (nsh_option == NULL)
- return clib_error_return (0, "iOAM Trace not registered");
-
- if (nm->add_options[nsh_option->option_id] != NULL)
- {
- if (0 != nm->add_options[nsh_option->option_id] ((u8 *) current,
- &option_size))
- {
- return clib_error_return (0, "Invalid MD Type");
- }
- }
-
- nm->options_size[nsh_option->option_id] = option_size;
- /* round to 4-byte */
- option_size = (((option_size + 3) >> 2) << 2);
-
- cur_len += option_size;
- current = data + option_size;
- }
-
- /* Add more options' parsing */
-
- a->nsh_entry.tlvs_len = cur_len;
- length += (cur_len >> 2);
- }
- length = (length & NSH_LEN_MASK) | ((ttl & 0x3) << 6);
-
-#define _(x) a->nsh_entry.nsh_base.x = x;
- foreach_copy_nsh_base_hdr_field;
-#undef _
-
- rv = nsh_add_del_entry (a, &entry_index);
-
- switch (rv)
- {
- case 0:
- break;
- default:
- return clib_error_return (0, "nsh_add_del_entry returned %d", rv);
- }
-
- return 0;
-}
-
-VLIB_CLI_COMMAND (create_nsh_entry_command, static) =
-{
-.path = "create nsh entry",.short_help =
- "create nsh entry {nsp <nn> nsi <nn>} [ttl <nn>] [md-type <nn>]"
- " [c1 <nn> c2 <nn> c3 <nn> c4 <nn>] [tlv-ioam-trace] [del]\n",.function
- = nsh_add_del_entry_command_fn,};
-
-/** API message handler */
-static void vl_api_nsh_add_del_entry_t_handler
- (vl_api_nsh_add_del_entry_t * mp)
-{
- vl_api_nsh_add_del_entry_reply_t *rmp;
- nsh_main_t *nm = &nsh_main;
- int rv;
- nsh_add_del_entry_args_t _a, *a = &_a;
- u32 entry_index = ~0;
- u8 tlvs_len = 0;
- u8 *data = 0;
-
- a->is_add = mp->is_add;
- a->nsh_entry.nsh_base.ver_o_c =
- (mp->ver_o_c & 0xF0) | ((mp->ttl & NSH_LEN_MASK) >> 2);
- a->nsh_entry.nsh_base.length =
- (mp->length & NSH_LEN_MASK) | ((mp->ttl & 0x3) << 6);
- a->nsh_entry.nsh_base.md_type = mp->md_type;
- a->nsh_entry.nsh_base.next_protocol = mp->next_protocol;
- a->nsh_entry.nsh_base.nsp_nsi = ntohl (mp->nsp_nsi);
- if (mp->md_type == 1)
- {
- a->nsh_entry.md.md1_data.c1 = ntohl (mp->c1);
- a->nsh_entry.md.md1_data.c2 = ntohl (mp->c2);
- a->nsh_entry.md.md1_data.c3 = ntohl (mp->c3);
- a->nsh_entry.md.md1_data.c4 = ntohl (mp->c4);
- }
- else if (mp->md_type == 2)
- {
- tlvs_len = mp->tlv_length;
- vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES);
-
- clib_memcpy (data, mp->tlv, tlvs_len);
- a->nsh_entry.tlvs_data = data;
- a->nsh_entry.tlvs_len = tlvs_len;
- }
-
- rv = nsh_add_del_entry (a, &entry_index);
-
- REPLY_MACRO2 (VL_API_NSH_ADD_DEL_ENTRY_REPLY, (
- {
- rmp->entry_index =
- htonl (entry_index);
- }
- ));
-}
-
-static void send_nsh_entry_details
- (nsh_entry_t * t, unix_shared_memory_queue_t * q, u32 context)
-{
- vl_api_nsh_entry_details_t *rmp;
- nsh_main_t *nm = &nsh_main;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
-
- rmp->_vl_msg_id = ntohs ((VL_API_NSH_ENTRY_DETAILS) + nm->msg_id_base);
- rmp->ver_o_c = t->nsh_base.ver_o_c;
- rmp->ttl = (t->nsh_base.ver_o_c & NSH_TTL_H4_MASK) << 2 |
- (t->nsh_base.length & NSH_TTL_L2_MASK) >> 6;
- rmp->length = t->nsh_base.length & NSH_LEN_MASK;
- rmp->md_type = t->nsh_base.md_type;
- rmp->next_protocol = t->nsh_base.next_protocol;
- rmp->nsp_nsi = htonl (t->nsh_base.nsp_nsi);
-
- if (t->nsh_base.md_type == 1)
- {
- rmp->tlv_length = 4;
- rmp->c1 = htonl (t->md.md1_data.c1);
- rmp->c2 = htonl (t->md.md1_data.c2);
- rmp->c3 = htonl (t->md.md1_data.c3);
- rmp->c4 = htonl (t->md.md1_data.c4);
- }
- else if (t->nsh_base.md_type == 2)
- {
- rmp->tlv_length = t->tlvs_len;
- clib_memcpy (rmp->tlv, t->tlvs_data, t->tlvs_len);
- }
-
- rmp->context = context;
-
- vl_msg_api_send_shmem (q, (u8 *) & rmp);
-}
-
-static void
-vl_api_nsh_entry_dump_t_handler (vl_api_nsh_entry_dump_t * mp)
-{
- unix_shared_memory_queue_t *q;
- nsh_main_t *nm = &nsh_main;
- nsh_entry_t *t;
- u32 entry_index;
-
- q = vl_api_client_index_to_input_queue (mp->client_index);
- if (q == 0)
- {
- return;
- }
-
- entry_index = ntohl (mp->entry_index);
-
- if (~0 == entry_index)
- {
- pool_foreach (t, nm->nsh_entries, (
- {
- send_nsh_entry_details (t, q,
- mp->context);
- }
- ));
- }
- else
- {
- if (entry_index >= vec_len (nm->nsh_entries))
- {
- return;
- }
- t = &nm->nsh_entries[entry_index];
- send_nsh_entry_details (t, q, mp->context);
- }
-}
-
-static void send_nsh_map_details
- (nsh_map_t * t, unix_shared_memory_queue_t * q, u32 context)
-{
- vl_api_nsh_map_details_t *rmp;
- nsh_main_t *nm = &nsh_main;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
-
- rmp->_vl_msg_id = ntohs ((VL_API_NSH_MAP_DETAILS) + nm->msg_id_base);
- rmp->nsp_nsi = htonl (t->nsp_nsi);
- rmp->mapped_nsp_nsi = htonl (t->mapped_nsp_nsi);
- rmp->nsh_action = htonl (t->nsh_action);
- rmp->sw_if_index = htonl (t->sw_if_index);
- rmp->rx_sw_if_index = htonl (t->rx_sw_if_index);
- rmp->next_node = htonl (t->next_node);
-
- rmp->context = context;
-
- vl_msg_api_send_shmem (q, (u8 *) & rmp);
-}
-
-static void
-vl_api_nsh_map_dump_t_handler (vl_api_nsh_map_dump_t * mp)
-{
- unix_shared_memory_queue_t *q;
- nsh_main_t *nm = &nsh_main;
- nsh_map_t *t;
- u32 map_index;
-
- q = vl_api_client_index_to_input_queue (mp->client_index);
- if (q == 0)
- {
- return;
- }
-
- map_index = ntohl (mp->map_index);
-
- if (~0 == map_index)
- {
- pool_foreach (t, nm->nsh_mappings, (
- {
- send_nsh_map_details (t, q,
- mp->context);
- }
- ));
- }
- else
- {
- if (map_index >= vec_len (nm->nsh_mappings))
- {
- return;
- }
- t = &nm->nsh_mappings[map_index];
- send_nsh_map_details (t, q, mp->context);
- }
-}
-
-static clib_error_t *
-show_nsh_entry_command_fn (vlib_main_t * vm,
- unformat_input_t * input, vlib_cli_command_t * cmd)
-{
- nsh_main_t *nm = &nsh_main;
- nsh_entry_t *nsh_entry;
-
- if (pool_elts (nm->nsh_entries) == 0)
- vlib_cli_output (vm, "No nsh entries configured.");
-
- pool_foreach (nsh_entry, nm->nsh_entries, (
- {
- vlib_cli_output (vm, "%U",
- format_nsh_header,
- nsh_entry->rewrite);
- vlib_cli_output (vm,
- " rewrite_size: %d bytes",
- nsh_entry->rewrite_size);
- }
- ));
-
- return 0;
-}
-
-VLIB_CLI_COMMAND (show_nsh_entry_command, static) =
-{
-.path = "show nsh entry",.function = show_nsh_entry_command_fn,};
-
-
-/* Set up the API message handling tables */
-static clib_error_t *
-nsh_plugin_api_hookup (vlib_main_t * vm)
-{
- nsh_main_t *nm __attribute__ ((unused)) = &nsh_main;
-#define _(N,n) \
- vl_msg_api_set_handlers((VL_API_##N + nm->msg_id_base), \
- #n, \
- vl_api_##n##_t_handler, \
- vl_noop_handler, \
- vl_api_##n##_t_endian, \
- vl_api_##n##_t_print, \
- sizeof(vl_api_##n##_t), 1);
- foreach_nsh_plugin_api_msg;
-#undef _
-
- return 0;
-}
-
-static void
-setup_message_id_table (nsh_main_t * nm, api_main_t * am)
-{
-#define _(id,n,crc) \
- vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + nm->msg_id_base);
- foreach_vl_msg_name_crc_nsh;
-#undef _
-}
-
-always_inline void
-nsh_md2_encap (vlib_buffer_t * b, nsh_base_header_t * hdr,
- nsh_entry_t * nsh_entry)
-{
- nsh_main_t *nm = &nsh_main;
- nsh_base_header_t *nsh_base;
- nsh_tlv_header_t *opt0;
- nsh_tlv_header_t *limit0;
- nsh_tlv_header_t *nsh_md2;
- nsh_option_map_t *nsh_option;
- u8 old_option_size = 0;
- u8 new_option_size = 0;
-
- /* Populate the NSH Header */
- opt0 = (nsh_tlv_header_t *) (nsh_entry->tlvs_data);
- limit0 = (nsh_tlv_header_t *) (nsh_entry->tlvs_data + nsh_entry->tlvs_len);
-
- nsh_md2 = (nsh_tlv_header_t *) ((u8 *) hdr /*nsh_entry->rewrite */ +
- sizeof (nsh_base_header_t));
- nsh_entry->rewrite_size = sizeof (nsh_base_header_t);
-
- /* Scan the set of variable metadata, process ones that we understand */
- while (opt0 < limit0)
- {
- old_option_size = sizeof (nsh_tlv_header_t) + opt0->length;
- /* round to 4-byte */
- old_option_size = ((old_option_size + 3) >> 2) << 2;
-
- nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
- if (nsh_option == NULL)
- {
- goto next_tlv_md2;
- }
-
- if (nm->options[nsh_option->option_id])
- {
- if ((*nm->options[nsh_option->option_id]) (b, nsh_md2))
- {
- goto next_tlv_md2;
- }
-
- /* option length may be varied */
- new_option_size = sizeof (nsh_tlv_header_t) + nsh_md2->length;
- /* round to 4-byte */
- new_option_size = ((new_option_size + 3) >> 2) << 2;
- nsh_entry->rewrite_size += new_option_size;
-
- nsh_md2 = (nsh_tlv_header_t *) (((u8 *) nsh_md2) + new_option_size);
- opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size);
-
- }
- else
- {
- next_tlv_md2:
- opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size);
- }
- }
-
- /* update nsh header's length */
- nsh_base = (nsh_base_header_t *) nsh_entry->rewrite;
- nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) |
- ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK);
- return;
-}
-
-always_inline void
-nsh_md2_swap (vlib_buffer_t * b,
- nsh_base_header_t * hdr,
- u32 header_len,
- nsh_entry_t * nsh_entry, u32 * next, u32 drop_node_val)
-{
- nsh_main_t *nm = &nsh_main;
- nsh_base_header_t *nsh_base;
- nsh_tlv_header_t *opt0;
- nsh_tlv_header_t *limit0;
- nsh_tlv_header_t *nsh_md2;
- nsh_option_map_t *nsh_option;
- u8 old_option_size = 0;
- u8 new_option_size = 0;
-
- /* Populate the NSH Header */
- opt0 = (nsh_md2_data_t *) (hdr + 1);
- limit0 = (nsh_md2_data_t *) ((u8 *) hdr + header_len);
-
- nsh_md2 =
- (nsh_tlv_header_t *) (nsh_entry->rewrite + sizeof (nsh_base_header_t));
- nsh_entry->rewrite_size = sizeof (nsh_base_header_t);
-
- /* Scan the set of variable metadata, process ones that we understand */
- while (opt0 < limit0)
- {
- old_option_size = sizeof (nsh_tlv_header_t) + opt0->length;
- /* round to 4-byte */
- old_option_size = ((old_option_size + 3) >> 2) << 2;
-
- nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
- if (nsh_option == NULL)
- {
- goto next_tlv_md2;
- }
-
- if (nm->swap_options[nsh_option->option_id])
- {
- if ((*nm->swap_options[nsh_option->option_id]) (b, opt0, nsh_md2))
- {
- goto next_tlv_md2;
- }
-
- /* option length may be varied */
- new_option_size = sizeof (nsh_tlv_header_t) + nsh_md2->length;
- /* round to 4-byte */
- new_option_size = ((new_option_size + 3) >> 2) << 2;
- nsh_entry->rewrite_size += new_option_size;
- nsh_md2 = (nsh_tlv_header_t *) (((u8 *) nsh_md2) + new_option_size);
-
- opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size);
-
- }
- else
- {
- next_tlv_md2:
- opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size);
- }
- }
-
- /* update nsh header's length */
- nsh_base = (nsh_base_header_t *) nsh_entry->rewrite;
- nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) |
- ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK);
- return;
-}
-
-always_inline void
-nsh_md2_decap (vlib_buffer_t * b,
- nsh_base_header_t * hdr,
- u32 * header_len, u32 * next, u32 drop_node_val)
-{
- nsh_main_t *nm = &nsh_main;
- nsh_md2_data_t *opt0;
- nsh_md2_data_t *limit0;
- nsh_option_map_t *nsh_option;
- u8 option_len = 0;
-
- /* Populate the NSH Header */
- opt0 = (nsh_md2_data_t *) (hdr + 1);
- limit0 = (nsh_md2_data_t *) ((u8 *) hdr + *header_len);
-
- /* Scan the set of variable metadata, process ones that we understand */
- while (opt0 < limit0)
- {
- nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
- if (nsh_option == NULL)
- {
- *next = drop_node_val;
- return;
- }
-
- if (nm->pop_options[nsh_option->option_id])
- {
- if ((*nm->pop_options[nsh_option->option_id]) (b, opt0))
- {
- *next = drop_node_val;
- return;
- }
- }
- /* round to 4-byte */
- option_len = ((opt0->length + 3) >> 2) << 2;
- opt0 =
- (nsh_md2_data_t *) (((u8 *) opt0) + sizeof (nsh_md2_data_t) +
- option_len);
- *next =
- (nm->decap_v4_next_override) ? (nm->decap_v4_next_override) : (*next);
- *header_len = (nm->decap_v4_next_override) ? 0 : (*header_len);
- }
-
- return;
-}
-
-static uword
-nsh_input_map (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame, u32 node_type)
-{
- u32 n_left_from, next_index, *from, *to_next;
- nsh_main_t *nm = &nsh_main;
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
-
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from >= 4 && n_left_to_next >= 2)
- {
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
- u32 next0 = NSH_NODE_NEXT_DROP, next1 = NSH_NODE_NEXT_DROP;
- uword *entry0, *entry1;
- nsh_base_header_t *hdr0 = 0, *hdr1 = 0;
- u32 header_len0 = 0, header_len1 = 0;
- u32 nsp_nsi0, nsp_nsi1;
- u32 ttl0, ttl1;
- u32 error0, error1;
- nsh_map_t *map0 = 0, *map1 = 0;
- nsh_entry_t *nsh_entry0 = 0, *nsh_entry1 = 0;
- nsh_base_header_t *encap_hdr0 = 0, *encap_hdr1 = 0;
- u32 encap_hdr_len0 = 0, encap_hdr_len1 = 0;
- nsh_proxy_session_by_key_t key0, key1;
- uword *p0, *p1;
- nsh_proxy_session_t *proxy0, *proxy1;
- u32 sw_if_index0 = 0, sw_if_index1 = 0;
- ethernet_header_t dummy_eth0, dummy_eth1;
-
- /* Prefetch next iteration. */
- {
- vlib_buffer_t *p2, *p3;
-
- p2 = vlib_get_buffer (vm, from[2]);
- p3 = vlib_get_buffer (vm, from[3]);
-
- vlib_prefetch_buffer_header (p2, LOAD);
- vlib_prefetch_buffer_header (p3, LOAD);
-
- CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
- CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
- }
-
- bi0 = from[0];
- bi1 = from[1];
- to_next[0] = bi0;
- to_next[1] = bi1;
- from += 2;
- to_next += 2;
- n_left_from -= 2;
- n_left_to_next -= 2;
-
- error0 = 0;
- error1 = 0;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
- hdr0 = vlib_buffer_get_current (b0);
- hdr1 = vlib_buffer_get_current (b1);
-
- /* Process packet 0 */
- if (node_type == NSH_INPUT_TYPE)
- {
- nsp_nsi0 = hdr0->nsp_nsi;
- header_len0 = (hdr0->length & NSH_LEN_MASK) * 4;
- ttl0 = (hdr0->ver_o_c & NSH_TTL_H4_MASK) << 2 |
- (hdr0->length & NSH_TTL_L2_MASK) >> 6;
- ttl0 = ttl0 - 1;
- if (PREDICT_FALSE (ttl0 == 0))
- {
- error0 = NSH_NODE_ERROR_INVALID_TTL;
- goto trace0;
- }
- }
- else if (node_type == NSH_CLASSIFIER_TYPE)
- {
- nsp_nsi0 =
- clib_host_to_net_u32 (vnet_buffer (b0)->
- l2_classify.opaque_index);
- }
- else if (node_type == NSH_AWARE_VNF_PROXY_TYPE)
- {
- /* Push dummy Eth header */
- clib_memcpy_fast (dummy_eth0.dst_address, dummy_dst_address, 6);
- clib_memcpy_fast (dummy_eth0.src_address, dummy_src_address, 6);
- dummy_eth0.type = 0x0800;
- vlib_buffer_advance (b0, -(word) sizeof (ethernet_header_t));
- hdr0 = vlib_buffer_get_current (b0);
- clib_memcpy_fast (hdr0, &dummy_eth0,
- (word) sizeof (ethernet_header_t));
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- nsp_nsi0 = nm->tunnel_index_by_sw_if_index[sw_if_index0];
- }
- else
- {
- clib_memset (&key0, 0, sizeof (key0));
- key0.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4;
- key0.transport_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-
- p0 = hash_get_mem (nm->nsh_proxy_session_by_key, &key0);
- if (PREDICT_FALSE (p0 == 0))
- {
- error0 = NSH_NODE_ERROR_NO_PROXY;
- goto trace0;
- }
-
- proxy0 = pool_elt_at_index (nm->nsh_proxy_sessions, p0[0]);
- if (PREDICT_FALSE (proxy0 == 0))
- {
- error0 = NSH_NODE_ERROR_NO_PROXY;
- goto trace0;
- }
- nsp_nsi0 = proxy0->nsp_nsi;
- }
-
- entry0 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi0);
- if (PREDICT_FALSE (entry0 == 0))
- {
- error0 = NSH_NODE_ERROR_NO_MAPPING;
- goto trace0;
- }
-
- /* Entry should point to a mapping ... */
- map0 = pool_elt_at_index (nm->nsh_mappings, entry0[0]);
- if (PREDICT_FALSE (map0 == 0))
- {
- error0 = NSH_NODE_ERROR_NO_MAPPING;
- goto trace0;
- }
-
- /* set up things for next node to transmit ie which node to handle it and where */
- next0 = map0->next_node;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = map0->sw_if_index;
- vnet_buffer (b0)->ip.adj_index[VLIB_TX] = map0->adj_index;
-
- if (PREDICT_FALSE (map0->nsh_action == NSH_ACTION_POP))
- {
- /* Manipulate MD2 */
- if (PREDICT_FALSE (hdr0->md_type == 2))
- {
- nsh_md2_decap (b0, hdr0, &header_len0, &next0,
- NSH_NODE_NEXT_DROP);
- if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP))
- {
- error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
- goto trace0;
- }
- vnet_buffer (b0)->sw_if_index[VLIB_RX] =
- map0->rx_sw_if_index;
- }
-
- /* Pop NSH header */
- vlib_buffer_advance (b0, (word) header_len0);
- goto trace0;
- }
-
- entry0 = hash_get_mem (nm->nsh_entry_by_key, &map0->mapped_nsp_nsi);
- if (PREDICT_FALSE (entry0 == 0))
- {
- error0 = NSH_NODE_ERROR_NO_ENTRY;
- goto trace0;
- }
-
- nsh_entry0 =
- (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry0[0]);
- encap_hdr0 = (nsh_base_header_t *) (nsh_entry0->rewrite);
- /* rewrite_size should equal to (encap_hdr0->length * 4) */
- encap_hdr_len0 = nsh_entry0->rewrite_size;
-
- if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_SWAP))
- {
- /* Manipulate MD2 */
- if (PREDICT_FALSE (hdr0->md_type == 2))
- {
- nsh_md2_swap (b0, hdr0, header_len0, nsh_entry0,
- &next0, NSH_NODE_NEXT_DROP);
- if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP))
- {
- error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
- goto trace0;
- }
- }
-
- /* Pop old NSH header */
- vlib_buffer_advance (b0, (word) header_len0);
-
- /* After processing, md2's length may be varied */
- encap_hdr_len0 = nsh_entry0->rewrite_size;
- /* Push new NSH header */
- vlib_buffer_advance (b0, -(word) encap_hdr_len0);
- hdr0 = vlib_buffer_get_current (b0);
- clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0);
-
- goto trace0;
- }
-
- if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_PUSH))
- {
- /* After processing, md2's length may be varied */
- encap_hdr_len0 = nsh_entry0->rewrite_size;
- /* Push new NSH header */
- vlib_buffer_advance (b0, -(word) encap_hdr_len0);
- hdr0 = vlib_buffer_get_current (b0);
- clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0);
-
- /* Manipulate MD2 */
- if (PREDICT_FALSE (nsh_entry0->nsh_base.md_type == 2))
- {
- nsh_md2_encap (b0, hdr0, nsh_entry0);
- }
-
- }
-
- trace0:
- b0->error = error0 ? node->errors[error0] : 0;
-
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- nsh_input_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- clib_memcpy_fast (&(tr->trace_data), hdr0,
- ((hdr0->length & NSH_LEN_MASK) * 4));
- }
-
- /* Process packet 1 */
- if (node_type == NSH_INPUT_TYPE)
- {
- nsp_nsi1 = hdr1->nsp_nsi;
- header_len1 = (hdr1->length & NSH_LEN_MASK) * 4;
- ttl1 = (hdr1->ver_o_c & NSH_TTL_H4_MASK) << 2 |
- (hdr1->length & NSH_TTL_L2_MASK) >> 6;
- ttl1 = ttl1 - 1;
- if (PREDICT_FALSE (ttl1 == 0))
- {
- error1 = NSH_NODE_ERROR_INVALID_TTL;
- goto trace1;
- }
- }
- else if (node_type == NSH_CLASSIFIER_TYPE)
- {
- nsp_nsi1 =
- clib_host_to_net_u32 (vnet_buffer (b1)->
- l2_classify.opaque_index);
- }
- else if (node_type == NSH_AWARE_VNF_PROXY_TYPE)
- {
- /* Push dummy Eth header */
- clib_memcpy_fast (dummy_eth1.dst_address, dummy_dst_address, 6);
- clib_memcpy_fast (dummy_eth1.src_address, dummy_src_address, 6);
- dummy_eth1.type = 0x0800;
- vlib_buffer_advance (b1, -(word) sizeof (ethernet_header_t));
- hdr1 = vlib_buffer_get_current (b1);
- clib_memcpy_fast (hdr1, &dummy_eth1,
- (word) sizeof (ethernet_header_t));
-
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
- nsp_nsi1 = nm->tunnel_index_by_sw_if_index[sw_if_index1];
- }
- else
- {
- clib_memset (&key1, 0, sizeof (key1));
- key1.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4;
- key1.transport_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
-
- p1 = hash_get_mem (nm->nsh_proxy_session_by_key, &key1);
- if (PREDICT_FALSE (p1 == 0))
- {
- error1 = NSH_NODE_ERROR_NO_PROXY;
- goto trace1;
- }
-
- proxy1 = pool_elt_at_index (nm->nsh_proxy_sessions, p1[0]);
- if (PREDICT_FALSE (proxy1 == 0))
- {
- error1 = NSH_NODE_ERROR_NO_PROXY;
- goto trace1;
- }
- nsp_nsi1 = proxy1->nsp_nsi;
- }
-
- entry1 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi1);
- if (PREDICT_FALSE (entry1 == 0))
- {
- error1 = NSH_NODE_ERROR_NO_MAPPING;
- goto trace1;
- }
-
- /* Entry should point to a mapping ... */
- map1 = pool_elt_at_index (nm->nsh_mappings, entry1[0]);
- if (PREDICT_FALSE (map1 == 0))
- {
- error1 = NSH_NODE_ERROR_NO_MAPPING;
- goto trace1;
- }
-
- /* set up things for next node to transmit ie which node to handle it and where */
- next1 = map1->next_node;
- vnet_buffer (b1)->sw_if_index[VLIB_TX] = map1->sw_if_index;
- vnet_buffer (b1)->ip.adj_index[VLIB_TX] = map1->adj_index;
-
- if (PREDICT_FALSE (map1->nsh_action == NSH_ACTION_POP))
- {
- /* Manipulate MD2 */
- if (PREDICT_FALSE (hdr1->md_type == 2))
- {
- nsh_md2_decap (b1, hdr1, &header_len1, &next1,
- NSH_NODE_NEXT_DROP);
- if (PREDICT_FALSE (next1 == NSH_NODE_NEXT_DROP))
- {
- error1 = NSH_NODE_ERROR_INVALID_OPTIONS;
- goto trace1;
- }
- vnet_buffer (b1)->sw_if_index[VLIB_RX] =
- map1->rx_sw_if_index;
- }
-
- /* Pop NSH header */
- vlib_buffer_advance (b1, (word) header_len1);
- goto trace1;
- }
-
- entry1 = hash_get_mem (nm->nsh_entry_by_key, &map1->mapped_nsp_nsi);
- if (PREDICT_FALSE (entry1 == 0))
- {
- error1 = NSH_NODE_ERROR_NO_ENTRY;
- goto trace1;
- }
-
- nsh_entry1 =
- (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry1[0]);
- encap_hdr1 = (nsh_base_header_t *) (nsh_entry1->rewrite);
- /* rewrite_size should equal to (encap_hdr0->length * 4) */
- encap_hdr_len1 = nsh_entry1->rewrite_size;
-
- if (PREDICT_TRUE (map1->nsh_action == NSH_ACTION_SWAP))
- {
- /* Manipulate MD2 */
- if (PREDICT_FALSE (hdr1->md_type == 2))
- {
- nsh_md2_swap (b1, hdr1, header_len1, nsh_entry1,
- &next1, NSH_NODE_NEXT_DROP);
- if (PREDICT_FALSE (next1 == NSH_NODE_NEXT_DROP))
- {
- error1 = NSH_NODE_ERROR_INVALID_OPTIONS;
- goto trace1;
- }
- }
-
- /* Pop old NSH header */
- vlib_buffer_advance (b1, (word) header_len1);
-
- /* After processing, md2's length may be varied */
- encap_hdr_len1 = nsh_entry1->rewrite_size;
- /* Push new NSH header */
- vlib_buffer_advance (b1, -(word) encap_hdr_len1);
- hdr1 = vlib_buffer_get_current (b1);
- clib_memcpy_fast (hdr1, encap_hdr1, (word) encap_hdr_len1);
-
- goto trace1;
- }
-
- if (PREDICT_FALSE (map1->nsh_action == NSH_ACTION_PUSH))
- {
- /* After processing, md2's length may be varied */
- encap_hdr_len1 = nsh_entry1->rewrite_size;
- /* Push new NSH header */
- vlib_buffer_advance (b1, -(word) encap_hdr_len1);
- hdr1 = vlib_buffer_get_current (b1);
- clib_memcpy_fast (hdr1, encap_hdr1, (word) encap_hdr_len1);
-
- /* Manipulate MD2 */
- if (PREDICT_FALSE (nsh_entry1->nsh_base.md_type == 2))
- {
- nsh_md2_encap (b1, hdr1, nsh_entry1);
- }
-
- }
-
- trace1:
- b1->error = error1 ? node->errors[error1] : 0;
-
- if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
- {
- nsh_input_trace_t *tr =
- vlib_add_trace (vm, node, b1, sizeof (*tr));
- clib_memcpy_fast (&(tr->trace_data), hdr1,
- ((hdr1->length & NSH_LEN_MASK) * 4));
- }
-
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
- n_left_to_next, bi0, bi1, next0,
- next1);
-
- }
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0 = 0;
- vlib_buffer_t *b0 = NULL;
- u32 next0 = NSH_NODE_NEXT_DROP;
- uword *entry0;
- nsh_base_header_t *hdr0 = 0;
- u32 header_len0 = 0;
- u32 nsp_nsi0;
- u32 ttl0;
- u32 error0;
- nsh_map_t *map0 = 0;
- nsh_entry_t *nsh_entry0 = 0;
- nsh_base_header_t *encap_hdr0 = 0;
- u32 encap_hdr_len0 = 0;
- nsh_proxy_session_by_key_t key0;
- uword *p0;
- nsh_proxy_session_t *proxy0 = 0;
- u32 sw_if_index0 = 0;
- ethernet_header_t dummy_eth0;
-
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
- error0 = 0;
-
- b0 = vlib_get_buffer (vm, bi0);
- hdr0 = vlib_buffer_get_current (b0);
-
- if (node_type == NSH_INPUT_TYPE)
- {
- nsp_nsi0 = hdr0->nsp_nsi;
- header_len0 = (hdr0->length & NSH_LEN_MASK) * 4;
- ttl0 = (hdr0->ver_o_c & NSH_TTL_H4_MASK) << 2 |
- (hdr0->length & NSH_TTL_L2_MASK) >> 6;
- ttl0 = ttl0 - 1;
- if (PREDICT_FALSE (ttl0 == 0))
- {
- error0 = NSH_NODE_ERROR_INVALID_TTL;
- goto trace00;
- }
- }
- else if (node_type == NSH_CLASSIFIER_TYPE)
- {
- nsp_nsi0 =
- clib_host_to_net_u32 (vnet_buffer (b0)->
- l2_classify.opaque_index);
- }
- else if (node_type == NSH_AWARE_VNF_PROXY_TYPE)
- {
- /* Push dummy Eth header */
- clib_memcpy_fast (dummy_eth0.dst_address, dummy_dst_address, 6);
- clib_memcpy_fast (dummy_eth0.src_address, dummy_src_address, 6);
- dummy_eth0.type = 0x0800;
- vlib_buffer_advance (b0, -(word) sizeof (ethernet_header_t));
- hdr0 = vlib_buffer_get_current (b0);
- clib_memcpy_fast (hdr0, &dummy_eth0,
- (word) sizeof (ethernet_header_t));
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- nsp_nsi0 = nm->tunnel_index_by_sw_if_index[sw_if_index0];
- }
- else
- {
- clib_memset (&key0, 0, sizeof (key0));
- key0.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4;
- key0.transport_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-
- p0 = hash_get_mem (nm->nsh_proxy_session_by_key, &key0);
- if (PREDICT_FALSE (p0 == 0))
- {
- error0 = NSH_NODE_ERROR_NO_PROXY;
- goto trace00;
- }
-
- proxy0 = pool_elt_at_index (nm->nsh_proxy_sessions, p0[0]);
- if (PREDICT_FALSE (proxy0 == 0))
- {
- error0 = NSH_NODE_ERROR_NO_PROXY;
- goto trace00;
- }
- nsp_nsi0 = proxy0->nsp_nsi;
- }
-
- entry0 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi0);
-
- if (PREDICT_FALSE (entry0 == 0))
- {
- error0 = NSH_NODE_ERROR_NO_MAPPING;
- goto trace00;
- }
-
- /* Entry should point to a mapping ... */
- map0 = pool_elt_at_index (nm->nsh_mappings, entry0[0]);
-
- if (PREDICT_FALSE (map0 == 0))
- {
- error0 = NSH_NODE_ERROR_NO_MAPPING;
- goto trace00;
- }
-
- /* set up things for next node to transmit ie which node to handle it and where */
- next0 = map0->next_node;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = map0->sw_if_index;
- vnet_buffer (b0)->ip.adj_index[VLIB_TX] = map0->adj_index;
- vnet_buffer (b0)->sw_if_index[VLIB_RX] = map0->nsh_sw_if;
-
- if (PREDICT_FALSE (map0->nsh_action == NSH_ACTION_POP))
- {
- /* Manipulate MD2 */
- if (PREDICT_FALSE (hdr0->md_type == 2))
- {
- nsh_md2_decap (b0, hdr0, &header_len0, &next0,
- NSH_NODE_NEXT_DROP);
- if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP))
- {
- error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
- goto trace00;
- }
- vnet_buffer (b0)->sw_if_index[VLIB_RX] =
- map0->rx_sw_if_index;
- }
-
- /* Pop NSH header */
- vlib_buffer_advance (b0, (word) header_len0);
- goto trace00;
- }
-
- entry0 = hash_get_mem (nm->nsh_entry_by_key, &map0->mapped_nsp_nsi);
- if (PREDICT_FALSE (entry0 == 0))
- {
- error0 = NSH_NODE_ERROR_NO_ENTRY;
- goto trace00;
- }
-
- nsh_entry0 =
- (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry0[0]);
- encap_hdr0 = (nsh_base_header_t *) (nsh_entry0->rewrite);
- /* rewrite_size should equal to (encap_hdr0->length * 4) */
- encap_hdr_len0 = nsh_entry0->rewrite_size;
-
- if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_SWAP))
- {
- /* Manipulate MD2 */
- if (PREDICT_FALSE (hdr0->md_type == 2))
- {
- nsh_md2_swap (b0, hdr0, header_len0, nsh_entry0,
- &next0, NSH_NODE_NEXT_DROP);
- if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP))
- {
- error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
- goto trace00;
- }
- }
-
- /* Pop old NSH header */
- vlib_buffer_advance (b0, (word) header_len0);
-
- /* After processing, md2's length may be varied */
- encap_hdr_len0 = nsh_entry0->rewrite_size;
- /* Push new NSH header */
- vlib_buffer_advance (b0, -(word) encap_hdr_len0);
- hdr0 = vlib_buffer_get_current (b0);
- clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0);
-
- goto trace00;
- }
-
- if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_PUSH))
- {
- /* After processing, md2's length may be varied */
- encap_hdr_len0 = nsh_entry0->rewrite_size;
- /* Push new NSH header */
- vlib_buffer_advance (b0, -(word) encap_hdr_len0);
- hdr0 = vlib_buffer_get_current (b0);
- clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0);
- /* Manipulate MD2 */
- if (PREDICT_FALSE (nsh_entry0->nsh_base.md_type == 2))
- {
- nsh_md2_encap (b0, hdr0, nsh_entry0);
- }
-
- }
-
- trace00:b0->error = error0 ? node->errors[error0] : 0;
-
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- nsh_input_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- clib_memcpy_fast (&(tr->trace_data[0]), hdr0,
- ((hdr0->length & NSH_LEN_MASK) * 4));
- }
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-
- }
-
- return from_frame->n_vectors;
-}
-
-/**
- * @brief Graph processing dispatch function for NSH Input
- *
- * @node nsh_input
- * @param *vm
- * @param *node
- * @param *from_frame
- *
- * @return from_frame->n_vectors
- *
- */
-static uword
-nsh_input (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return nsh_input_map (vm, node, from_frame, NSH_INPUT_TYPE);
-}
-
-/**
- * @brief Graph processing dispatch function for NSH-Proxy
- *
- * @node nsh_proxy
- * @param *vm
- * @param *node
- * @param *from_frame
- *
- * @return from_frame->n_vectors
- *
- */
-static uword
-nsh_proxy (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return nsh_input_map (vm, node, from_frame, NSH_PROXY_TYPE);
-}
-
-/**
- * @brief Graph processing dispatch function for NSH Classifier
- *
- * @node nsh_classifier
- * @param *vm
- * @param *node
- * @param *from_frame
- *
- * @return from_frame->n_vectors
- *
- */
-static uword
-nsh_classifier (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return nsh_input_map (vm, node, from_frame, NSH_CLASSIFIER_TYPE);
-}
-
-/**
- * @brief Graph processing dispatch function for NSH-AWARE-VNF-PROXY
- *
- * @node nsh_aware_vnf_proxy
- * @param *vm
- * @param *node
- * @param *from_frame
- *
- * @return from_frame->n_vectors
- *
- */
-static uword
-nsh_aware_vnf_proxy (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- return nsh_input_map (vm, node, from_frame, NSH_AWARE_VNF_PROXY_TYPE);
-}
-
-static char *nsh_node_error_strings[] = {
-#define _(sym,string) string,
- foreach_nsh_node_error
-#undef _
-};
-
-/* register nsh-input node */
-VLIB_REGISTER_NODE (nsh_input_node) =
-{
- .function = nsh_input,.name = "nsh-input",.vector_size =
- sizeof (u32),.format_trace = format_nsh_node_map_trace,.format_buffer =
- format_nsh_header,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
- ARRAY_LEN (nsh_node_error_strings),.error_strings =
- nsh_node_error_strings,.n_next_nodes = NSH_NODE_N_NEXT,.next_nodes =
- {
-#define _(s,n) [NSH_NODE_NEXT_##s] = n,
- foreach_nsh_node_next
-#undef _
- }
-,};
-
-VLIB_NODE_FUNCTION_MULTIARCH (nsh_input_node, nsh_input);
-
-/* register nsh-proxy node */
-VLIB_REGISTER_NODE (nsh_proxy_node) =
-{
- .function = nsh_proxy,.name = "nsh-proxy",.vector_size =
- sizeof (u32),.format_trace = format_nsh_node_map_trace,.format_buffer =
- format_nsh_header,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
- ARRAY_LEN (nsh_node_error_strings),.error_strings =
- nsh_node_error_strings,.n_next_nodes = NSH_NODE_N_NEXT,.next_nodes =
- {
-#define _(s,n) [NSH_NODE_NEXT_##s] = n,
- foreach_nsh_node_next
-#undef _
- }
-,};
-
-VLIB_NODE_FUNCTION_MULTIARCH (nsh_proxy_node, nsh_proxy);
-
-/* register nsh-classifier node */
-VLIB_REGISTER_NODE (nsh_classifier_node) =
-{
- .function = nsh_classifier,.name = "nsh-classifier",.vector_size =
- sizeof (u32),.format_trace = format_nsh_node_map_trace,.format_buffer =
- format_nsh_header,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
- ARRAY_LEN (nsh_node_error_strings),.error_strings =
- nsh_node_error_strings,.n_next_nodes = NSH_NODE_N_NEXT,.next_nodes =
- {
-#define _(s,n) [NSH_NODE_NEXT_##s] = n,
- foreach_nsh_node_next
-#undef _
- }
-,};
-
-VLIB_NODE_FUNCTION_MULTIARCH (nsh_classifier_node, nsh_classifier);
-
-/* register nsh-aware-vnf-proxy node */
-VLIB_REGISTER_NODE (nsh_aware_vnf_proxy_node) =
-{
- .function = nsh_aware_vnf_proxy,.name = "nsh-aware-vnf-proxy",.vector_size =
- sizeof (u32),.format_trace = format_nsh_node_map_trace,.format_buffer =
- format_nsh_header,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors =
- ARRAY_LEN (nsh_node_error_strings),.error_strings =
- nsh_node_error_strings,.n_next_nodes = NSH_NODE_N_NEXT,.next_nodes =
- {
-#define _(s,n) [NSH_NODE_NEXT_##s] = n,
- foreach_nsh_node_next
-#undef _
- }
-,};
-
-VLIB_NODE_FUNCTION_MULTIARCH (nsh_aware_vnf_proxy_node, nsh_aware_vnf_proxy);
-
-void
-nsh_md2_set_next_ioam_export_override (uword next)
-{
- nsh_main_t *hm = &nsh_main;
- hm->decap_v4_next_override = next;
- return;
-}
-
-
-clib_error_t *
-nsh_init (vlib_main_t * vm)
-{
- nsh_main_t *nm = &nsh_main;
- clib_error_t *error = 0;
- u8 *name;
- uword next_node;
-
- /* Init the main structures from VPP */
- nm->vlib_main = vm;
- nm->vnet_main = vnet_get_main ();
-
- /* Various state maintenance mappings */
- nm->nsh_mapping_by_key = hash_create_mem (0, sizeof (u32), sizeof (uword));
-
- nm->nsh_mapping_by_mapped_key
- = hash_create_mem (0, sizeof (u32), sizeof (uword));
-
- nm->nsh_entry_by_key = hash_create_mem (0, sizeof (u32), sizeof (uword));
-
- nm->nsh_proxy_session_by_key
- =
- hash_create_mem (0, sizeof (nsh_proxy_session_by_key_t), sizeof (uword));
-
- nm->nsh_option_map_by_key
- = hash_create_mem (0, sizeof (nsh_option_map_by_key_t), sizeof (uword));
-
- name = format (0, "nsh_%08x%c", api_version, 0);
-
- /* Set up the API */
- nm->msg_id_base = vl_msg_api_get_msg_ids
- ((char *) name, VL_MSG_FIRST_AVAILABLE);
-
- error = nsh_plugin_api_hookup (vm);
-
- /* Add our API messages to the global name_crc hash table */
- setup_message_id_table (nm, &api_main);
-
- /* Add dispositions to nodes that feed nsh-input */
- //alagalah - validate we don't really need to use the node value
- next_node =
- vlib_node_add_next (vm, vxlan4_gpe_input_node.index,
- nsh_input_node.index);
- vlib_node_add_next (vm, vxlan4_gpe_input_node.index, nsh_proxy_node.index);
- vlib_node_add_next (vm, vxlan4_gpe_input_node.index,
- nsh_aware_vnf_proxy_node.index);
- vxlan_gpe_register_decap_protocol (VXLAN_GPE_PROTOCOL_NSH, next_node);
-
- vlib_node_add_next (vm, vxlan6_gpe_input_node.index, nsh_input_node.index);
- vlib_node_add_next (vm, vxlan6_gpe_input_node.index, nsh_proxy_node.index);
- vlib_node_add_next (vm, vxlan6_gpe_input_node.index,
- nsh_aware_vnf_proxy_node.index);
-
- vlib_node_add_next (vm, gre4_input_node.index, nsh_input_node.index);
- vlib_node_add_next (vm, gre4_input_node.index, nsh_proxy_node.index);
- vlib_node_add_next (vm, gre4_input_node.index,
- nsh_aware_vnf_proxy_node.index);
-
- vlib_node_add_next (vm, gre6_input_node.index, nsh_input_node.index);
- vlib_node_add_next (vm, gre6_input_node.index, nsh_proxy_node.index);
- vlib_node_add_next (vm, gre6_input_node.index,
- nsh_aware_vnf_proxy_node.index);
-
- /* Add NSH-Proxy support */
- vlib_node_add_next (vm, vxlan4_input_node.index, nsh_proxy_node.index);
- vlib_node_add_next (vm, vxlan6_input_node.index, nsh_proxy_node.index);
-
- /* Add NSH-Classifier support */
- vlib_node_add_next (vm, ip4_classify_node.index, nsh_classifier_node.index);
- vlib_node_add_next (vm, ip6_classify_node.index, nsh_classifier_node.index);
- vlib_node_add_next (vm, l2_input_classify_node.index,
- nsh_classifier_node.index);
+ /* Add NSH-Classifier support */
+ vlib_node_add_next (vm, ip4_classify_node.index,
+ nm->nsh_classifier_node_index);
+ vlib_node_add_next (vm, ip6_classify_node.index,
+ nm->nsh_classifier_node_index);
+ vlib_node_add_next (vm, l2_input_classify_node.index,
+ nm->nsh_classifier_node_index);
/* Add Ethernet+NSH support */
- ethernet_register_input_type (vm, ETHERNET_TYPE_NSH, nsh_input_node.index);
-
- vec_free (name);
+ ethernet_register_input_type (vm, ETHERNET_TYPE_NSH,
+ nm->nsh_input_node_index);
return error;
}
--- /dev/null
+/*
+ * nsh_api.c - nsh mapping api
+ *
+ * Copyright (c) 2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <vnet/vnet.h>
+#include <vnet/plugin/plugin.h>
+#include <nsh/nsh.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vpp/app/version.h>
+
+/* define message IDs */
+#define vl_msg_id(n,h) n,
+typedef enum
+{
+#include <nsh/nsh.api.h>
+ /* We'll want to know how many messages IDs we need... */
+ VL_MSG_FIRST_AVAILABLE,
+} vl_msg_id_t;
+#undef vl_msg_id
+
+/* define message structures */
+#define vl_typedefs
+#include <nsh/nsh.api.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <nsh/nsh.api.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <nsh/nsh.api.h>
+#undef vl_printfun
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <nsh/nsh.api.h>
+#undef vl_api_version
+
+#define vl_msg_name_crc_list
+#include <nsh/nsh.api.h>
+#undef vl_msg_name_crc_list
+
+/*
+ * A handy macro to set up a message reply.
+ * Assumes that the following variables are available:
+ * mp - pointer to request message
+ * rmp - pointer to reply message type
+ * rv - return value
+ */
+
+#define REPLY_MACRO(t) \
+ do { \
+ unix_shared_memory_queue_t * q = \
+ vl_api_client_index_to_input_queue (mp->client_index); \
+ if (!q) \
+ return; \
+ \
+ rmp = vl_msg_api_alloc (sizeof (*rmp)); \
+ rmp->_vl_msg_id = ntohs((t)+nm->msg_id_base); \
+ rmp->context = mp->context; \
+ rmp->retval = ntohl(rv); \
+ \
+ vl_msg_api_send_shmem (q, (u8 *)&rmp); \
+ } while(0);
+
+#define REPLY_MACRO2(t, body) \
+ do { \
+ unix_shared_memory_queue_t * q; \
+ rv = vl_msg_api_pd_handler (mp, rv); \
+ q = vl_api_client_index_to_input_queue (mp->client_index); \
+ if (!q) \
+ return; \
+ \
+ rmp = vl_msg_api_alloc (sizeof (*rmp)); \
+ rmp->_vl_msg_id = ntohs((t)+nm->msg_id_base); \
+ rmp->context = mp->context; \
+ rmp->retval = ntohl(rv); \
+ do {body;} while (0); \
+ vl_msg_api_send_shmem (q, (u8 *)&rmp); \
+ } while(0);
+
+/* List of message types that this plugin understands */
+
+#define foreach_nsh_plugin_api_msg \
+ _(NSH_ADD_DEL_ENTRY, nsh_add_del_entry) \
+ _(NSH_ENTRY_DUMP, nsh_entry_dump) \
+ _(NSH_ADD_DEL_MAP, nsh_add_del_map) \
+ _(NSH_MAP_DUMP, nsh_map_dump)
+
+static void send_nsh_entry_details
+ (nsh_entry_t * t, unix_shared_memory_queue_t * q, u32 context)
+{
+ vl_api_nsh_entry_details_t *rmp;
+ nsh_main_t *nm = &nsh_main;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+
+ rmp->_vl_msg_id = ntohs ((VL_API_NSH_ENTRY_DETAILS) + nm->msg_id_base);
+ rmp->ver_o_c = t->nsh_base.ver_o_c;
+ rmp->ttl = (t->nsh_base.ver_o_c & NSH_TTL_H4_MASK) << 2 |
+ (t->nsh_base.length & NSH_TTL_L2_MASK) >> 6;
+ rmp->length = t->nsh_base.length & NSH_LEN_MASK;
+ rmp->md_type = t->nsh_base.md_type;
+ rmp->next_protocol = t->nsh_base.next_protocol;
+ rmp->nsp_nsi = htonl (t->nsh_base.nsp_nsi);
+
+ if (t->nsh_base.md_type == 1)
+ {
+ rmp->tlv_length = 4;
+ rmp->c1 = htonl (t->md.md1_data.c1);
+ rmp->c2 = htonl (t->md.md1_data.c2);
+ rmp->c3 = htonl (t->md.md1_data.c3);
+ rmp->c4 = htonl (t->md.md1_data.c4);
+ }
+ else if (t->nsh_base.md_type == 2)
+ {
+ rmp->tlv_length = t->tlvs_len;
+ clib_memcpy (rmp->tlv, t->tlvs_data, t->tlvs_len);
+ }
+
+ rmp->context = context;
+
+ vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void send_nsh_map_details
+ (nsh_map_t * t, unix_shared_memory_queue_t * q, u32 context)
+{
+ vl_api_nsh_map_details_t *rmp;
+ nsh_main_t *nm = &nsh_main;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+
+ rmp->_vl_msg_id = ntohs ((VL_API_NSH_MAP_DETAILS) + nm->msg_id_base);
+ rmp->nsp_nsi = htonl (t->nsp_nsi);
+ rmp->mapped_nsp_nsi = htonl (t->mapped_nsp_nsi);
+ rmp->nsh_action = htonl (t->nsh_action);
+ rmp->sw_if_index = htonl (t->sw_if_index);
+ rmp->rx_sw_if_index = htonl (t->rx_sw_if_index);
+ rmp->next_node = htonl (t->next_node);
+
+ rmp->context = context;
+
+ vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nsh_map_dump_t_handler (vl_api_nsh_map_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+ nsh_main_t *nm = &nsh_main;
+ nsh_map_t *t;
+ u32 map_index;
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (q == 0)
+ {
+ return;
+ }
+
+ map_index = ntohl (mp->map_index);
+
+ if (~0 == map_index)
+ {
+ pool_foreach (t, nm->nsh_mappings, (
+ {
+ send_nsh_map_details (t, q,
+ mp->context);
+ }
+ ));
+ }
+ else
+ {
+ if (map_index >= vec_len (nm->nsh_mappings))
+ {
+ return;
+ }
+ t = &nm->nsh_mappings[map_index];
+ send_nsh_map_details (t, q, mp->context);
+ }
+}
+
+/** API message handler */
+static void
+vl_api_nsh_add_del_map_t_handler (vl_api_nsh_add_del_map_t * mp)
+{
+ vl_api_nsh_add_del_map_reply_t *rmp;
+ nsh_main_t *nm = &nsh_main;
+ int rv;
+ nsh_add_del_map_args_t _a, *a = &_a;
+ u32 map_index = ~0;
+
+ a->is_add = mp->is_add;
+ a->map.nsp_nsi = ntohl (mp->nsp_nsi);
+ a->map.mapped_nsp_nsi = ntohl (mp->mapped_nsp_nsi);
+ a->map.nsh_action = ntohl (mp->nsh_action);
+ a->map.sw_if_index = ntohl (mp->sw_if_index);
+ a->map.rx_sw_if_index = ntohl (mp->rx_sw_if_index);
+ a->map.next_node = ntohl (mp->next_node);
+
+ rv = nsh_add_del_map (a, &map_index);
+
+ if ((a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN4)
+ | (a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN6))
+ {
+ rv = nsh_add_del_proxy_session (a);
+ }
+
+ REPLY_MACRO2 (VL_API_NSH_ADD_DEL_MAP_REPLY, (
+ {
+ rmp->map_index =
+ htonl (map_index);
+ }
+ ));
+}
+
+int
+nsh_header_rewrite (nsh_entry_t * nsh_entry)
+{
+ u8 *rw = 0;
+ int len = 0;
+ nsh_base_header_t *nsh_base;
+ nsh_md1_data_t *nsh_md1;
+ nsh_main_t *nm = &nsh_main;
+ nsh_md2_data_t *opt0;
+ nsh_md2_data_t *limit0;
+ nsh_md2_data_t *nsh_md2;
+ nsh_option_map_t _nsh_option, *nsh_option = &_nsh_option;
+ u8 old_option_size = 0;
+ u8 new_option_size = 0;
+
+ vec_free (nsh_entry->rewrite);
+ if (nsh_entry->nsh_base.md_type == 1)
+ {
+ len = sizeof (nsh_base_header_t) + sizeof (nsh_md1_data_t);
+ }
+ else if (nsh_entry->nsh_base.md_type == 2)
+ {
+ /* set to maxim, maybe dataplane will add more TLVs */
+ len = MAX_NSH_HEADER_LEN;
+ }
+ vec_validate_aligned (rw, len - 1, CLIB_CACHE_LINE_BYTES);
+ clib_memset (rw, 0, len);
+
+ nsh_base = (nsh_base_header_t *) rw;
+ nsh_base->ver_o_c = nsh_entry->nsh_base.ver_o_c;
+ nsh_base->length = nsh_entry->nsh_base.length;
+ nsh_base->md_type = nsh_entry->nsh_base.md_type;
+ nsh_base->next_protocol = nsh_entry->nsh_base.next_protocol;
+ nsh_base->nsp_nsi = clib_host_to_net_u32 (nsh_entry->nsh_base.nsp_nsi);
+
+ if (nsh_base->md_type == 1)
+ {
+ nsh_md1 = (nsh_md1_data_t *) (rw + sizeof (nsh_base_header_t));
+ nsh_md1->c1 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c1);
+ nsh_md1->c2 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c2);
+ nsh_md1->c3 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c3);
+ nsh_md1->c4 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c4);
+ nsh_entry->rewrite_size = 24;
+ }
+ else if (nsh_base->md_type == 2)
+ {
+ opt0 = (nsh_md2_data_t *) (nsh_entry->tlvs_data);
+ limit0 = (nsh_md2_data_t *) ((u8 *) opt0 + nsh_entry->tlvs_len);
+
+ nsh_md2 = (nsh_md2_data_t *) (rw + sizeof (nsh_base_header_t));
+ nsh_entry->rewrite_size = sizeof (nsh_base_header_t);
+
+ while (opt0 < limit0)
+ {
+ old_option_size = sizeof (nsh_md2_data_t) + opt0->length;
+ /* round to 4-byte */
+ old_option_size = ((old_option_size + 3) >> 2) << 2;
+
+ nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
+ if (nsh_option == NULL)
+ {
+ goto next_tlv_md2;
+ }
+
+ if (nm->add_options[nsh_option->option_id] != NULL)
+ {
+ if (0 != nm->add_options[nsh_option->option_id] ((u8 *) nsh_md2,
+ &new_option_size))
+ {
+ goto next_tlv_md2;
+ }
+
+ /* round to 4-byte */
+ new_option_size = ((new_option_size + 3) >> 2) << 2;
+
+ nsh_entry->rewrite_size += new_option_size;
+ nsh_md2 =
+ (nsh_md2_data_t *) (((u8 *) nsh_md2) + new_option_size);
+ opt0 = (nsh_md2_data_t *) (((u8 *) opt0) + old_option_size);
+ }
+ else
+ {
+ next_tlv_md2:
+ opt0 = (nsh_md2_data_t *) (((u8 *) opt0) + old_option_size);
+ }
+
+ }
+ }
+
+ nsh_entry->rewrite = rw;
+ nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) |
+ ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK);
+
+ return 0;
+}
+
+extern vnet_device_class_t nsh_device_class;
+extern vnet_hw_interface_class_t nsh_hw_class;
+
+/**
+ * Action function to add or del an nsh map.
+ * Shared by both CLI and binary API
+ **/
+int
+nsh_add_del_map (nsh_add_del_map_args_t * a, u32 * map_indexp)
+{
+ nsh_main_t *nm = &nsh_main;
+ vnet_main_t *vnm = nm->vnet_main;
+ nsh_map_t *map = 0;
+ u32 key, *key_copy;
+ uword *entry;
+ hash_pair_t *hp;
+ u32 map_index = ~0;
+ vnet_hw_interface_t *hi;
+ u32 nsh_hw_if = ~0;
+ u32 nsh_sw_if = ~0;
+
+ /* net order, so data plane could use nsh header to lookup directly */
+ key = clib_host_to_net_u32 (a->map.nsp_nsi);
+
+ entry = hash_get_mem (nm->nsh_mapping_by_key, &key);
+
+ if (a->is_add)
+ {
+ /* adding an entry, must not already exist */
+ if (entry)
+ return -1; //TODO API_ERROR_INVALID_VALUE;
+
+ pool_get_aligned (nm->nsh_mappings, map, CLIB_CACHE_LINE_BYTES);
+ clib_memset (map, 0, sizeof (*map));
+
+ /* copy from arg structure */
+ map->nsp_nsi = a->map.nsp_nsi;
+ map->mapped_nsp_nsi = a->map.mapped_nsp_nsi;
+ map->nsh_action = a->map.nsh_action;
+ map->sw_if_index = a->map.sw_if_index;
+ map->rx_sw_if_index = a->map.rx_sw_if_index;
+ map->next_node = a->map.next_node;
+ map->adj_index = a->map.adj_index;
+
+
+ key_copy = clib_mem_alloc (sizeof (*key_copy));
+ clib_memcpy (key_copy, &key, sizeof (*key_copy));
+
+ hash_set_mem (nm->nsh_mapping_by_key, key_copy, map - nm->nsh_mappings);
+ map_index = map - nm->nsh_mappings;
+
+ if (vec_len (nm->free_nsh_tunnel_hw_if_indices) > 0)
+ {
+ nsh_hw_if = nm->free_nsh_tunnel_hw_if_indices
+ [vec_len (nm->free_nsh_tunnel_hw_if_indices) - 1];
+ _vec_len (nm->free_nsh_tunnel_hw_if_indices) -= 1;
+
+ hi = vnet_get_hw_interface (vnm, nsh_hw_if);
+ hi->dev_instance = map_index;
+ hi->hw_instance = hi->dev_instance;
+ }
+ else
+ {
+ nsh_hw_if = vnet_register_interface
+ (vnm, nsh_device_class.index, map_index, nsh_hw_class.index,
+ map_index);
+ hi = vnet_get_hw_interface (vnm, nsh_hw_if);
+ hi->output_node_index = nsh_aware_vnf_proxy_node.index;
+ }
+
+ map->nsh_hw_if = nsh_hw_if;
+ map->nsh_sw_if = nsh_sw_if = hi->sw_if_index;
+ vec_validate_init_empty (nm->tunnel_index_by_sw_if_index, nsh_sw_if,
+ ~0);
+ nm->tunnel_index_by_sw_if_index[nsh_sw_if] = key;
+
+ vnet_sw_interface_set_flags (vnm, hi->sw_if_index,
+ VNET_SW_INTERFACE_FLAG_ADMIN_UP);
+ }
+ else
+ {
+ if (!entry)
+ return -2; //TODO API_ERROR_NO_SUCH_ENTRY;
+
+ map = pool_elt_at_index (nm->nsh_mappings, entry[0]);
+
+ vnet_sw_interface_set_flags (vnm, map->nsh_sw_if,
+ VNET_SW_INTERFACE_FLAG_ADMIN_DOWN);
+ vec_add1 (nm->free_nsh_tunnel_hw_if_indices, map->nsh_sw_if);
+ nm->tunnel_index_by_sw_if_index[map->nsh_sw_if] = ~0;
+
+ hp = hash_get_pair (nm->nsh_mapping_by_key, &key);
+ key_copy = (void *) (hp->key);
+ hash_unset_mem (nm->nsh_mapping_by_key, &key);
+ clib_mem_free (key_copy);
+
+ pool_put (nm->nsh_mappings, map);
+ }
+
+ if (map_indexp)
+ *map_indexp = map_index;
+
+ return 0;
+}
+
+/**
+ * Action function to add or del an nsh-proxy-session.
+ * Shared by both CLI and binary API
+ **/
+int
+nsh_add_del_proxy_session (nsh_add_del_map_args_t * a)
+{
+ nsh_main_t *nm = &nsh_main;
+ nsh_proxy_session_t *proxy = 0;
+ nsh_proxy_session_by_key_t key, *key_copy;
+ uword *entry;
+ hash_pair_t *hp;
+ u32 nsp = 0, nsi = 0;
+
+ clib_memset (&key, 0, sizeof (key));
+ key.transport_type = a->map.next_node;
+ key.transport_index = a->map.sw_if_index;
+
+ entry = hash_get_mem (nm->nsh_proxy_session_by_key, &key);
+
+ if (a->is_add)
+ {
+ /* adding an entry, must not already exist */
+ if (entry)
+ return -1; //TODO API_ERROR_INVALID_VALUE;
+
+ pool_get_aligned (nm->nsh_proxy_sessions, proxy, CLIB_CACHE_LINE_BYTES);
+ clib_memset (proxy, 0, sizeof (*proxy));
+
+ /* Nsi needs to minus 1 within NSH-Proxy */
+ nsp = (a->map.nsp_nsi >> NSH_NSP_SHIFT) & NSH_NSP_MASK;
+ nsi = a->map.nsp_nsi & NSH_NSI_MASK;
+ if (nsi == 0)
+ return -1;
+
+ nsi = nsi - 1;
+ /* net order, so could use it to lookup nsh map table directly */
+ proxy->nsp_nsi = clib_host_to_net_u32 ((nsp << NSH_NSP_SHIFT) | nsi);
+
+ key_copy = clib_mem_alloc (sizeof (*key_copy));
+ clib_memcpy (key_copy, &key, sizeof (*key_copy));
+
+ hash_set_mem (nm->nsh_proxy_session_by_key, key_copy,
+ proxy - nm->nsh_proxy_sessions);
+ }
+ else
+ {
+ if (!entry)
+ return -2; //TODO API_ERROR_NO_SUCH_ENTRY;
+
+ proxy = pool_elt_at_index (nm->nsh_proxy_sessions, entry[0]);
+ hp = hash_get_pair (nm->nsh_proxy_session_by_key, &key);
+ key_copy = (void *) (hp->key);
+ hash_unset_mem (nm->nsh_proxy_session_by_key, &key);
+ clib_mem_free (key_copy);
+
+ pool_put (nm->nsh_proxy_sessions, proxy);
+ }
+
+ return 0;
+}
+
+/**
+ * Action function for adding an NSH entry
+ * nsh_add_del_entry_args_t *a: host order
+ */
+int
+nsh_add_del_entry (nsh_add_del_entry_args_t * a, u32 * entry_indexp)
+{
+ nsh_main_t *nm = &nsh_main;
+ nsh_entry_t *nsh_entry = 0;
+ u32 key, *key_copy;
+ uword *entry_id;
+ hash_pair_t *hp;
+ u32 entry_index = ~0;
+ u8 tlvs_len = 0;
+ u8 *data = 0;
+
+ /* host order, because nsh map table stores nsp_nsi in host order */
+ key = a->nsh_entry.nsh_base.nsp_nsi;
+
+ entry_id = hash_get_mem (nm->nsh_entry_by_key, &key);
+
+ if (a->is_add)
+ {
+ /* adding an entry, must not already exist */
+ if (entry_id)
+ return -1; // TODO VNET_API_ERROR_INVALID_VALUE;
+
+ pool_get_aligned (nm->nsh_entries, nsh_entry, CLIB_CACHE_LINE_BYTES);
+ clib_memset (nsh_entry, 0, sizeof (*nsh_entry));
+
+ /* copy from arg structure */
+#define _(x) nsh_entry->nsh_base.x = a->nsh_entry.nsh_base.x;
+ foreach_copy_nsh_base_hdr_field;
+#undef _
+
+ if (a->nsh_entry.nsh_base.md_type == 1)
+ {
+ nsh_entry->md.md1_data.c1 = a->nsh_entry.md.md1_data.c1;
+ nsh_entry->md.md1_data.c2 = a->nsh_entry.md.md1_data.c2;
+ nsh_entry->md.md1_data.c3 = a->nsh_entry.md.md1_data.c3;
+ nsh_entry->md.md1_data.c4 = a->nsh_entry.md.md1_data.c4;
+ }
+ else if (a->nsh_entry.nsh_base.md_type == 2)
+ {
+ vec_free (nsh_entry->tlvs_data);
+ tlvs_len = a->nsh_entry.tlvs_len;
+ vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES);
+
+ clib_memcpy (data, a->nsh_entry.tlvs_data, tlvs_len);
+ nsh_entry->tlvs_data = data;
+ nsh_entry->tlvs_len = tlvs_len;
+ vec_free (a->nsh_entry.tlvs_data);
+ }
+
+ nsh_header_rewrite (nsh_entry);
+
+ key_copy = clib_mem_alloc (sizeof (*key_copy));
+ clib_memcpy (key_copy, &key, sizeof (*key_copy));
+
+ hash_set_mem (nm->nsh_entry_by_key, key_copy,
+ nsh_entry - nm->nsh_entries);
+ entry_index = nsh_entry - nm->nsh_entries;
+ }
+ else
+ {
+ if (!entry_id)
+ return -2; //TODO API_ERROR_NO_SUCH_ENTRY;
+
+ nsh_entry = pool_elt_at_index (nm->nsh_entries, entry_id[0]);
+ hp = hash_get_pair (nm->nsh_entry_by_key, &key);
+ key_copy = (void *) (hp->key);
+ hash_unset_mem (nm->nsh_entry_by_key, &key);
+ clib_mem_free (key_copy);
+
+ vec_free (nsh_entry->tlvs_data);
+ vec_free (nsh_entry->rewrite);
+ pool_put (nm->nsh_entries, nsh_entry);
+ }
+
+ if (entry_indexp)
+ *entry_indexp = entry_index;
+
+ return 0;
+}
+
+
+/** API message handler */
+static void vl_api_nsh_add_del_entry_t_handler
+ (vl_api_nsh_add_del_entry_t * mp)
+{
+ vl_api_nsh_add_del_entry_reply_t *rmp;
+ nsh_main_t *nm = &nsh_main;
+ int rv;
+ nsh_add_del_entry_args_t _a, *a = &_a;
+ u32 entry_index = ~0;
+ u8 tlvs_len = 0;
+ u8 *data = 0;
+
+ a->is_add = mp->is_add;
+ a->nsh_entry.nsh_base.ver_o_c =
+ (mp->ver_o_c & 0xF0) | ((mp->ttl & NSH_LEN_MASK) >> 2);
+ a->nsh_entry.nsh_base.length =
+ (mp->length & NSH_LEN_MASK) | ((mp->ttl & 0x3) << 6);
+ a->nsh_entry.nsh_base.md_type = mp->md_type;
+ a->nsh_entry.nsh_base.next_protocol = mp->next_protocol;
+ a->nsh_entry.nsh_base.nsp_nsi = ntohl (mp->nsp_nsi);
+ if (mp->md_type == 1)
+ {
+ a->nsh_entry.md.md1_data.c1 = ntohl (mp->c1);
+ a->nsh_entry.md.md1_data.c2 = ntohl (mp->c2);
+ a->nsh_entry.md.md1_data.c3 = ntohl (mp->c3);
+ a->nsh_entry.md.md1_data.c4 = ntohl (mp->c4);
+ }
+ else if (mp->md_type == 2)
+ {
+ tlvs_len = mp->tlv_length;
+ vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES);
+
+ clib_memcpy (data, mp->tlv, tlvs_len);
+ a->nsh_entry.tlvs_data = data;
+ a->nsh_entry.tlvs_len = tlvs_len;
+ }
+
+ rv = nsh_add_del_entry (a, &entry_index);
+
+ REPLY_MACRO2 (VL_API_NSH_ADD_DEL_ENTRY_REPLY, (
+ {
+ rmp->entry_index =
+ htonl (entry_index);
+ }
+ ));
+}
+
+static void
+vl_api_nsh_entry_dump_t_handler (vl_api_nsh_entry_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+ nsh_main_t *nm = &nsh_main;
+ nsh_entry_t *t;
+ u32 entry_index;
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (q == 0)
+ {
+ return;
+ }
+
+ entry_index = ntohl (mp->entry_index);
+
+ if (~0 == entry_index)
+ {
+ pool_foreach (t, nm->nsh_entries, (
+ {
+ send_nsh_entry_details (t, q,
+ mp->context);
+ }
+ ));
+ }
+ else
+ {
+ if (entry_index >= vec_len (nm->nsh_entries))
+ {
+ return;
+ }
+ t = &nm->nsh_entries[entry_index];
+ send_nsh_entry_details (t, q, mp->context);
+ }
+}
+
+static void
+setup_message_id_table (nsh_main_t * nm, api_main_t * am)
+{
+#define _(id,n,crc) \
+ vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + nm->msg_id_base);
+ foreach_vl_msg_name_crc_nsh;
+#undef _
+}
+
+/* Set up the API message handling tables */
+static clib_error_t *
+nsh_plugin_api_hookup (vlib_main_t * vm)
+{
+ nsh_main_t *nm __attribute__ ((unused)) = &nsh_main;
+#define _(N,n) \
+ vl_msg_api_set_handlers((VL_API_##N + nm->msg_id_base), \
+ #n, \
+ vl_api_##n##_t_handler, \
+ vl_noop_handler, \
+ vl_api_##n##_t_endian, \
+ vl_api_##n##_t_print, \
+ sizeof(vl_api_##n##_t), 1);
+ foreach_nsh_plugin_api_msg;
+#undef _
+
+ return 0;
+}
+
+clib_error_t *
+nsh_api_init (vlib_main_t * vm, nsh_main_t * nm)
+{
+ clib_error_t *error;
+ u8 *name;
+
+ name = format (0, "nsh_%08x%c", api_version, 0);
+
+ /* Set up the API */
+ nm->msg_id_base = vl_msg_api_get_msg_ids
+ ((char *) name, VL_MSG_FIRST_AVAILABLE);
+
+ error = nsh_plugin_api_hookup (vm);
+
+ /* Add our API messages to the global name_crc hash table */
+ setup_message_id_table (nm, &api_main);
+
+ vec_free (name);
+
+ return error;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * nsh_cli.c - nsh cli functions
+ *
+ * Copyright (c) 2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/plugin/plugin.h>
+#include <nsh/nsh.h>
+#include <vnet/adj/adj.h>
+
+/* format from network order */
+u8 *
+format_nsh_pop_header (u8 * s, va_list * args)
+{
+ return format_nsh_header (s, args);
+}
+
+u8 *
+format_nsh_pop_node_map_trace (u8 * s, va_list * args)
+{
+ return format_nsh_node_map_trace (s, args);
+}
+
+static uword
+unformat_nsh_action (unformat_input_t * input, va_list * args)
+{
+ u32 *result = va_arg (*args, u32 *);
+ u32 tmp;
+
+ if (unformat (input, "swap"))
+ *result = NSH_ACTION_SWAP;
+ else if (unformat (input, "push"))
+ *result = NSH_ACTION_PUSH;
+ else if (unformat (input, "pop"))
+ *result = NSH_ACTION_POP;
+ else if (unformat (input, "%d", &tmp))
+ *result = tmp;
+ else
+ return 0;
+
+ return 1;
+}
+
+static u8 *
+format_nsh_action (u8 * s, va_list * args)
+{
+ u32 nsh_action = va_arg (*args, u32);
+
+ switch (nsh_action)
+ {
+ case NSH_ACTION_SWAP:
+ return format (s, "swap");
+ case NSH_ACTION_PUSH:
+ return format (s, "push");
+ case NSH_ACTION_POP:
+ return format (s, "pop");
+ default:
+ return format (s, "unknown %d", nsh_action);
+ }
+ return s;
+}
+
+u8 *
+format_nsh_map (u8 * s, va_list * args)
+{
+ nsh_map_t *map = va_arg (*args, nsh_map_t *);
+
+ s = format (s, "nsh entry nsp: %d nsi: %d ",
+ (map->nsp_nsi >> NSH_NSP_SHIFT) & NSH_NSP_MASK,
+ map->nsp_nsi & NSH_NSI_MASK);
+ s = format (s, "maps to nsp: %d nsi: %d ",
+ (map->mapped_nsp_nsi >> NSH_NSP_SHIFT) & NSH_NSP_MASK,
+ map->mapped_nsp_nsi & NSH_NSI_MASK);
+
+ s = format (s, " nsh_action %U\n", format_nsh_action, map->nsh_action);
+
+ switch (map->next_node)
+ {
+ case NSH_NODE_NEXT_ENCAP_GRE4:
+ {
+ s = format (s, "encapped by GRE4 intf: %d", map->sw_if_index);
+ break;
+ }
+ case NSH_NODE_NEXT_ENCAP_GRE6:
+ {
+ s = format (s, "encapped by GRE6 intf: %d", map->sw_if_index);
+ break;
+ }
+ case NSH_NODE_NEXT_ENCAP_VXLANGPE:
+ {
+ s = format (s, "encapped by VXLAN GPE intf: %d", map->sw_if_index);
+ break;
+ }
+ case NSH_NODE_NEXT_ENCAP_VXLAN4:
+ {
+ s = format (s, "encapped by VXLAN4 intf: %d", map->sw_if_index);
+ break;
+ }
+ case NSH_NODE_NEXT_ENCAP_VXLAN6:
+ {
+ s = format (s, "encapped by VXLAN6 intf: %d", map->sw_if_index);
+ break;
+ }
+ case NSH_NODE_NEXT_DECAP_ETH_INPUT:
+ {
+ s = format (s, "encap-none");
+ break;
+ }
+ case NSH_NODE_NEXT_ENCAP_LISP_GPE:
+ {
+ s = format (s, "encapped by LISP GPE intf: %d", map->sw_if_index);
+ break;
+ }
+ case NSH_NODE_NEXT_ENCAP_ETHERNET:
+ {
+ s = format (s, "encapped by Ethernet intf: %d", map->sw_if_index);
+ break;
+ }
+ default:
+ s = format (s, "only GRE and VXLANGPE support in this rev");
+ }
+
+ return s;
+}
+
+static adj_index_t
+nsh_get_adj_by_sw_if_index (u32 sw_if_index)
+{
+ adj_index_t ai = ~0;
+
+ /* *INDENT-OFF* */
+ pool_foreach_index(ai, adj_pool,
+ ({
+ if (sw_if_index == adj_get_sw_if_index(ai))
+ {
+ return ai;
+ }
+ }));
+ /* *INDENT-ON* */
+
+ return ~0;
+}
+
+
+/**
+ * CLI command for NSH map
+ */
+static clib_error_t *
+nsh_add_del_map_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u8 is_add = 1;
+ u32 nsp, nsi, mapped_nsp, mapped_nsi, nsh_action;
+ int nsp_set = 0, nsi_set = 0, mapped_nsp_set = 0, mapped_nsi_set = 0;
+ int nsh_action_set = 0;
+ u32 next_node = ~0;
+ u32 adj_index = ~0;
+ u32 sw_if_index = ~0; // temporary requirement to get this moved over to NSHSFC
+ u32 rx_sw_if_index = ~0; // temporary requirement to get this moved over to NSHSFC
+ nsh_add_del_map_args_t _a, *a = &_a;
+ u32 map_index;
+ int rv;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "del"))
+ is_add = 0;
+ else if (unformat (line_input, "nsp %d", &nsp))
+ nsp_set = 1;
+ else if (unformat (line_input, "nsi %d", &nsi))
+ nsi_set = 1;
+ else if (unformat (line_input, "mapped-nsp %d", &mapped_nsp))
+ mapped_nsp_set = 1;
+ else if (unformat (line_input, "mapped-nsi %d", &mapped_nsi))
+ mapped_nsi_set = 1;
+ else if (unformat (line_input, "nsh_action %U", unformat_nsh_action,
+ &nsh_action))
+ nsh_action_set = 1;
+ else if (unformat (line_input, "encap-gre4-intf %d", &sw_if_index))
+ next_node = NSH_NODE_NEXT_ENCAP_GRE4;
+ else if (unformat (line_input, "encap-gre6-intf %d", &sw_if_index))
+ next_node = NSH_NODE_NEXT_ENCAP_GRE6;
+ else if (unformat (line_input, "encap-vxlan-gpe-intf %d", &sw_if_index))
+ next_node = NSH_NODE_NEXT_ENCAP_VXLANGPE;
+ else if (unformat (line_input, "encap-lisp-gpe-intf %d", &sw_if_index))
+ next_node = NSH_NODE_NEXT_ENCAP_LISP_GPE;
+ else if (unformat (line_input, "encap-vxlan4-intf %d", &sw_if_index))
+ next_node = NSH_NODE_NEXT_ENCAP_VXLAN4;
+ else if (unformat (line_input, "encap-vxlan6-intf %d", &sw_if_index))
+ next_node = NSH_NODE_NEXT_ENCAP_VXLAN6;
+ else if (unformat (line_input, "encap-eth-intf %d", &sw_if_index))
+ {
+ next_node = NSH_NODE_NEXT_ENCAP_ETHERNET;
+ adj_index = nsh_get_adj_by_sw_if_index (sw_if_index);
+ }
+ else
+ if (unformat
+ (line_input, "encap-none %d %d", &sw_if_index, &rx_sw_if_index))
+ next_node = NSH_NODE_NEXT_DECAP_ETH_INPUT;
+ else
+ return clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ }
+
+ unformat_free (line_input);
+
+ if (nsp_set == 0 || nsi_set == 0)
+ return clib_error_return (0, "nsp nsi pair required. Key: for NSH entry");
+
+ if (mapped_nsp_set == 0 || mapped_nsi_set == 0)
+ return clib_error_return (0,
+ "mapped-nsp mapped-nsi pair required. Key: for NSH entry");
+
+ if (nsh_action_set == 0)
+ return clib_error_return (0, "nsh_action required: swap|push|pop.");
+
+ if (next_node == ~0)
+ return clib_error_return (0,
+ "must specific action: [encap-gre-intf <nn> | encap-vxlan-gpe-intf <nn> | encap-lisp-gpe-intf <nn> | encap-none <tx_sw_if_index> <rx_sw_if_index>]");
+
+ clib_memset (a, 0, sizeof (*a));
+
+ /* set args structure */
+ a->is_add = is_add;
+ a->map.nsp_nsi = (nsp << NSH_NSP_SHIFT) | nsi;
+ a->map.mapped_nsp_nsi = (mapped_nsp << NSH_NSP_SHIFT) | mapped_nsi;
+ a->map.nsh_action = nsh_action;
+ a->map.sw_if_index = sw_if_index;
+ a->map.rx_sw_if_index = rx_sw_if_index;
+ a->map.next_node = next_node;
+ a->map.adj_index = adj_index;
+
+ rv = nsh_add_del_map (a, &map_index);
+
+ switch (rv)
+ {
+ case 0:
+ break;
+ case -1: //TODO API_ERROR_INVALID_VALUE:
+ return clib_error_return (0,
+ "mapping already exists. Remove it first.");
+
+ case -2: // TODO API_ERROR_NO_SUCH_ENTRY:
+ return clib_error_return (0, "mapping does not exist.");
+
+ default:
+ return clib_error_return (0, "nsh_add_del_map returned %d", rv);
+ }
+
+ if ((a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN4)
+ | (a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN6))
+ {
+ rv = nsh_add_del_proxy_session (a);
+
+ switch (rv)
+ {
+ case 0:
+ break;
+ case -1: //TODO API_ERROR_INVALID_VALUE:
+ return clib_error_return (0,
+ "nsh-proxy-session already exists. Remove it first.");
+
+ case -2: // TODO API_ERROR_NO_SUCH_ENTRY:
+ return clib_error_return (0, "nsh-proxy-session does not exist.");
+
+ default:
+ return clib_error_return
+ (0, "nsh_add_del_proxy_session() returned %d", rv);
+ }
+ }
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (create_nsh_map_command, static) = {
+ .path = "create nsh map",
+ .short_help =
+ "create nsh map nsp <nn> nsi <nn> [del] mapped-nsp <nn> mapped-nsi <nn> nsh_action [swap|push|pop] "
+ "[encap-gre4-intf <nn> | encap-gre4-intf <nn> | encap-vxlan-gpe-intf <nn> | encap-lisp-gpe-intf <nn> "
+ " encap-vxlan4-intf <nn> | encap-vxlan6-intf <nn>| encap-eth-intf <nn> | encap-none]\n",
+ .function = nsh_add_del_map_command_fn,
+};
+/* *INDENT-ON* */
+
+/**
+ * CLI command for showing the mapping between NSH entries
+ */
+static clib_error_t *
+show_nsh_map_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ nsh_main_t *nm = &nsh_main;
+ nsh_map_t *map;
+
+ if (pool_elts (nm->nsh_mappings) == 0)
+ vlib_cli_output (vm, "No nsh maps configured.");
+
+ pool_foreach (map, nm->nsh_mappings, (
+ {
+ vlib_cli_output (vm, "%U",
+ format_nsh_map,
+ map);
+ }
+ ));
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_nsh_map_command, static) = {
+ .path = "show nsh map",
+ .function = show_nsh_map_command_fn,
+};
+/* *INDENT-ON* */
+
+/**
+ * CLI command for adding NSH entry
+ */
+static clib_error_t *
+nsh_add_del_entry_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u8 is_add = 1;
+ u8 ver_o_c = 0;
+ u8 ttl = 63;
+ u8 length = 0;
+ u8 md_type = 0;
+ u8 next_protocol = 1; /* default: ip4 */
+ u32 nsp;
+ u8 nsp_set = 0;
+ u32 nsi;
+ u8 nsi_set = 0;
+ u32 nsp_nsi;
+ u32 c1 = 0;
+ u32 c2 = 0;
+ u32 c3 = 0;
+ u32 c4 = 0;
+ u8 *data = 0;
+ nsh_tlv_header_t tlv_header;
+ u8 cur_len = 0, tlvs_len = 0;
+ u8 *current;
+ nsh_main_t *nm = &nsh_main;
+ nsh_option_map_t _nsh_option, *nsh_option = &_nsh_option;
+ u8 option_size = 0;
+ u32 tmp;
+ int rv;
+ u32 entry_index;
+ nsh_add_del_entry_args_t _a, *a = &_a;
+ u8 has_ioam_trace_option = 0;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "del"))
+ is_add = 0;
+ else if (unformat (line_input, "version %d", &tmp))
+ ver_o_c |= (tmp & 3) << 6;
+ else if (unformat (line_input, "o-bit %d", &tmp))
+ ver_o_c |= (tmp & 1) << 5;
+ else if (unformat (line_input, "c-bit %d", &tmp))
+ ver_o_c |= (tmp & 1) << 4;
+ else if (unformat (line_input, "ttl %d", &ttl))
+ ver_o_c |= (ttl & NSH_LEN_MASK) >> 2;
+ else if (unformat (line_input, "md-type %d", &tmp))
+ md_type = tmp;
+ else if (unformat (line_input, "next-ip4"))
+ next_protocol = 1;
+ else if (unformat (line_input, "next-ip6"))
+ next_protocol = 2;
+ else if (unformat (line_input, "next-ethernet"))
+ next_protocol = 3;
+ else if (unformat (line_input, "c1 %d", &c1))
+ ;
+ else if (unformat (line_input, "c2 %d", &c2))
+ ;
+ else if (unformat (line_input, "c3 %d", &c3))
+ ;
+ else if (unformat (line_input, "c4 %d", &c4))
+ ;
+ else if (unformat (line_input, "nsp %d", &nsp))
+ nsp_set = 1;
+ else if (unformat (line_input, "nsi %d", &nsi))
+ nsi_set = 1;
+ else if (unformat (line_input, "tlv-ioam-trace"))
+ has_ioam_trace_option = 1;
+ else
+ return clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ }
+
+ unformat_free (line_input);
+
+ if (nsp_set == 0)
+ return clib_error_return (0, "nsp not specified");
+
+ if (nsi_set == 0)
+ return clib_error_return (0, "nsi not specified");
+
+ if (md_type == 1 && has_ioam_trace_option == 1)
+ return clib_error_return (0, "Invalid MD Type");
+
+ nsp_nsi = (nsp << 8) | nsi;
+
+ clib_memset (a, 0, sizeof (*a));
+ a->is_add = is_add;
+
+ if (md_type == 1)
+ {
+ a->nsh_entry.md.md1_data.c1 = c1;
+ a->nsh_entry.md.md1_data.c2 = c2;
+ a->nsh_entry.md.md1_data.c3 = c3;
+ a->nsh_entry.md.md1_data.c4 = c4;
+ length = (sizeof (nsh_base_header_t) + sizeof (nsh_md1_data_t)) >> 2;
+ }
+ else if (md_type == 2)
+ {
+ length = sizeof (nsh_base_header_t) >> 2;
+
+ vec_free (a->nsh_entry.tlvs_data);
+ tlvs_len = (MAX_METADATA_LEN << 2);
+ vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES);
+ a->nsh_entry.tlvs_data = data;
+ current = data;
+
+ if (has_ioam_trace_option)
+ {
+ tlv_header.class = clib_host_to_net_u16 (NSH_MD2_IOAM_CLASS);
+ tlv_header.type = NSH_MD2_IOAM_OPTION_TYPE_TRACE;
+ /* Uses network order's class and type to lookup */
+ nsh_option =
+ nsh_md2_lookup_option (tlv_header.class, tlv_header.type);
+ if (nsh_option == NULL)
+ return clib_error_return (0, "iOAM Trace not registered");
+
+ if (nm->add_options[nsh_option->option_id] != NULL)
+ {
+ if (0 != nm->add_options[nsh_option->option_id] ((u8 *) current,
+ &option_size))
+ {
+ return clib_error_return (0, "Invalid MD Type");
+ }
+ }
+
+ nm->options_size[nsh_option->option_id] = option_size;
+ /* round to 4-byte */
+ option_size = (((option_size + 3) >> 2) << 2);
+
+ cur_len += option_size;
+ current = data + option_size;
+ }
+
+ /* Add more options' parsing */
+
+ a->nsh_entry.tlvs_len = cur_len;
+ length += (cur_len >> 2);
+ }
+ length = (length & NSH_LEN_MASK) | ((ttl & 0x3) << 6);
+
+#define _(x) a->nsh_entry.nsh_base.x = x;
+ foreach_copy_nsh_base_hdr_field;
+#undef _
+
+ rv = nsh_add_del_entry (a, &entry_index);
+
+ switch (rv)
+ {
+ case 0:
+ break;
+ default:
+ return clib_error_return (0, "nsh_add_del_entry returned %d", rv);
+ }
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (create_nsh_entry_command, static) = {
+ .path = "create nsh entry",
+ .short_help =
+ "create nsh entry {nsp <nn> nsi <nn>} [ttl <nn>] [md-type <nn>]"
+ " [c1 <nn> c2 <nn> c3 <nn> c4 <nn>] [tlv-ioam-trace] [del]\n",
+ .function = nsh_add_del_entry_command_fn,
+};
+/* *INDENT-ON* */
+
+/* format from network order */
+u8 *
+format_nsh_header (u8 * s, va_list * args)
+{
+ nsh_main_t *nm = &nsh_main;
+ nsh_md2_data_t *opt0;
+ nsh_md2_data_t *limit0;
+ nsh_option_map_t *nsh_option;
+ u8 option_len = 0;
+
+ u8 *header = va_arg (*args, u8 *);
+ nsh_base_header_t *nsh_base = (nsh_base_header_t *) header;
+ nsh_md1_data_t *nsh_md1 = (nsh_md1_data_t *) (nsh_base + 1);
+ nsh_md2_data_t *nsh_md2 = (nsh_md2_data_t *) (nsh_base + 1);
+ opt0 = (nsh_md2_data_t *) nsh_md2;
+ limit0 = (nsh_md2_data_t *) ((u8 *) nsh_md2 +
+ ((nsh_base->length & NSH_LEN_MASK) * 4
+ - sizeof (nsh_base_header_t)));
+
+ s = format (s, "nsh ver %d ", (nsh_base->ver_o_c >> 6));
+ if (nsh_base->ver_o_c & NSH_O_BIT)
+ s = format (s, "O-set ");
+
+ if (nsh_base->ver_o_c & NSH_C_BIT)
+ s = format (s, "C-set ");
+
+ s = format (s, "ttl %d ", (nsh_base->ver_o_c & NSH_TTL_H4_MASK) << 2 |
+ (nsh_base->length & NSH_TTL_L2_MASK) >> 6);
+
+ s = format (s, "len %d (%d bytes) md_type %d next_protocol %d\n",
+ (nsh_base->length & NSH_LEN_MASK),
+ (nsh_base->length & NSH_LEN_MASK) * 4,
+ nsh_base->md_type, nsh_base->next_protocol);
+
+ s = format (s, " service path %d service index %d\n",
+ (clib_net_to_host_u32 (nsh_base->nsp_nsi) >> NSH_NSP_SHIFT) &
+ NSH_NSP_MASK,
+ clib_net_to_host_u32 (nsh_base->nsp_nsi) & NSH_NSI_MASK);
+
+ if (nsh_base->md_type == 1)
+ {
+ s = format (s, " c1 %d c2 %d c3 %d c4 %d\n",
+ clib_net_to_host_u32 (nsh_md1->c1),
+ clib_net_to_host_u32 (nsh_md1->c2),
+ clib_net_to_host_u32 (nsh_md1->c3),
+ clib_net_to_host_u32 (nsh_md1->c4));
+ }
+ else if (nsh_base->md_type == 2)
+ {
+ s = format (s, " Supported TLVs: \n");
+
+ /* Scan the set of variable metadata, network order */
+ while (opt0 < limit0)
+ {
+ nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
+ if (nsh_option != NULL)
+ {
+ if (nm->trace[nsh_option->option_id] != NULL)
+ {
+ s = (*nm->trace[nsh_option->option_id]) (s, opt0);
+ }
+ else
+ {
+ s =
+ format (s, "\n untraced option %d length %d",
+ opt0->type, opt0->length);
+ }
+ }
+ else
+ {
+ s =
+ format (s, "\n unrecognized option %d length %d",
+ opt0->type, opt0->length);
+ }
+
+ /* round to 4-byte */
+ option_len = ((opt0->length + 3) >> 2) << 2;
+ opt0 =
+ (nsh_md2_data_t *) (((u8 *) opt0) + sizeof (nsh_md2_data_t) +
+ option_len);
+ }
+ }
+
+ return s;
+}
+
+u8 *
+format_nsh_node_map_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 *);
+ nsh_input_trace_t *t = va_arg (*args, nsh_input_trace_t *);
+
+ s = format (s, "\n %U", format_nsh_header, &(t->trace_data));
+
+ return s;
+}
+
+static clib_error_t *
+show_nsh_entry_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ nsh_main_t *nm = &nsh_main;
+ nsh_entry_t *nsh_entry;
+
+ if (pool_elts (nm->nsh_entries) == 0)
+ vlib_cli_output (vm, "No nsh entries configured.");
+
+ pool_foreach (nsh_entry, nm->nsh_entries, (
+ {
+ vlib_cli_output (vm, "%U",
+ format_nsh_header,
+ nsh_entry->rewrite);
+ vlib_cli_output (vm,
+ " rewrite_size: %d bytes",
+ nsh_entry->rewrite_size);
+ }
+ ));
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_nsh_entry_command, static) = {
+ .path = "show nsh entry",
+ .function = show_nsh_entry_command_fn,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * nsh_node.c - nsh nodes
+ *
+ * Copyright (c) 2013 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/plugin/plugin.h>
+#include <nsh/nsh.h>
+
+always_inline void
+nsh_md2_encap (vlib_buffer_t * b, nsh_base_header_t * hdr,
+ nsh_entry_t * nsh_entry)
+{
+ nsh_main_t *nm = &nsh_main;
+ nsh_base_header_t *nsh_base;
+ nsh_tlv_header_t *opt0;
+ nsh_tlv_header_t *limit0;
+ nsh_tlv_header_t *nsh_md2;
+ nsh_option_map_t *nsh_option;
+ u8 old_option_size = 0;
+ u8 new_option_size = 0;
+
+ /* Populate the NSH Header */
+ opt0 = (nsh_tlv_header_t *) (nsh_entry->tlvs_data);
+ limit0 = (nsh_tlv_header_t *) (nsh_entry->tlvs_data + nsh_entry->tlvs_len);
+
+ nsh_md2 = (nsh_tlv_header_t *) ((u8 *) hdr /*nsh_entry->rewrite */ +
+ sizeof (nsh_base_header_t));
+ nsh_entry->rewrite_size = sizeof (nsh_base_header_t);
+
+ /* Scan the set of variable metadata, process ones that we understand */
+ while (opt0 < limit0)
+ {
+ old_option_size = sizeof (nsh_tlv_header_t) + opt0->length;
+ /* round to 4-byte */
+ old_option_size = ((old_option_size + 3) >> 2) << 2;
+
+ nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
+ if (nsh_option == NULL)
+ {
+ goto next_tlv_md2;
+ }
+
+ if (nm->options[nsh_option->option_id])
+ {
+ if ((*nm->options[nsh_option->option_id]) (b, nsh_md2))
+ {
+ goto next_tlv_md2;
+ }
+
+ /* option length may be varied */
+ new_option_size = sizeof (nsh_tlv_header_t) + nsh_md2->length;
+ /* round to 4-byte */
+ new_option_size = ((new_option_size + 3) >> 2) << 2;
+ nsh_entry->rewrite_size += new_option_size;
+
+ nsh_md2 = (nsh_tlv_header_t *) (((u8 *) nsh_md2) + new_option_size);
+ opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size);
+
+ }
+ else
+ {
+ next_tlv_md2:
+ opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size);
+ }
+ }
+
+ /* update nsh header's length */
+ nsh_base = (nsh_base_header_t *) nsh_entry->rewrite;
+ nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) |
+ ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK);
+ return;
+}
+
+always_inline void
+nsh_md2_swap (vlib_buffer_t * b,
+ nsh_base_header_t * hdr,
+ u32 header_len,
+ nsh_entry_t * nsh_entry, u32 * next, u32 drop_node_val)
+{
+ nsh_main_t *nm = &nsh_main;
+ nsh_base_header_t *nsh_base;
+ nsh_tlv_header_t *opt0;
+ nsh_tlv_header_t *limit0;
+ nsh_tlv_header_t *nsh_md2;
+ nsh_option_map_t *nsh_option;
+ u8 old_option_size = 0;
+ u8 new_option_size = 0;
+
+ /* Populate the NSH Header */
+ opt0 = (nsh_md2_data_t *) (hdr + 1);
+ limit0 = (nsh_md2_data_t *) ((u8 *) hdr + header_len);
+
+ nsh_md2 =
+ (nsh_tlv_header_t *) (nsh_entry->rewrite + sizeof (nsh_base_header_t));
+ nsh_entry->rewrite_size = sizeof (nsh_base_header_t);
+
+ /* Scan the set of variable metadata, process ones that we understand */
+ while (opt0 < limit0)
+ {
+ old_option_size = sizeof (nsh_tlv_header_t) + opt0->length;
+ /* round to 4-byte */
+ old_option_size = ((old_option_size + 3) >> 2) << 2;
+
+ nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
+ if (nsh_option == NULL)
+ {
+ goto next_tlv_md2;
+ }
+
+ if (nm->swap_options[nsh_option->option_id])
+ {
+ if ((*nm->swap_options[nsh_option->option_id]) (b, opt0, nsh_md2))
+ {
+ goto next_tlv_md2;
+ }
+
+ /* option length may be varied */
+ new_option_size = sizeof (nsh_tlv_header_t) + nsh_md2->length;
+ /* round to 4-byte */
+ new_option_size = ((new_option_size + 3) >> 2) << 2;
+ nsh_entry->rewrite_size += new_option_size;
+ nsh_md2 = (nsh_tlv_header_t *) (((u8 *) nsh_md2) + new_option_size);
+
+ opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size);
+
+ }
+ else
+ {
+ next_tlv_md2:
+ opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size);
+ }
+ }
+
+ /* update nsh header's length */
+ nsh_base = (nsh_base_header_t *) nsh_entry->rewrite;
+ nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) |
+ ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK);
+ return;
+}
+
+always_inline void
+nsh_md2_decap (vlib_buffer_t * b,
+ nsh_base_header_t * hdr,
+ u32 * header_len, u32 * next, u32 drop_node_val)
+{
+ nsh_main_t *nm = &nsh_main;
+ nsh_md2_data_t *opt0;
+ nsh_md2_data_t *limit0;
+ nsh_option_map_t *nsh_option;
+ u8 option_len = 0;
+
+ /* Populate the NSH Header */
+ opt0 = (nsh_md2_data_t *) (hdr + 1);
+ limit0 = (nsh_md2_data_t *) ((u8 *) hdr + *header_len);
+
+ /* Scan the set of variable metadata, process ones that we understand */
+ while (opt0 < limit0)
+ {
+ nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
+ if (nsh_option == NULL)
+ {
+ *next = drop_node_val;
+ return;
+ }
+
+ if (nm->pop_options[nsh_option->option_id])
+ {
+ if ((*nm->pop_options[nsh_option->option_id]) (b, opt0))
+ {
+ *next = drop_node_val;
+ return;
+ }
+ }
+ /* round to 4-byte */
+ option_len = ((opt0->length + 3) >> 2) << 2;
+ opt0 =
+ (nsh_md2_data_t *) (((u8 *) opt0) + sizeof (nsh_md2_data_t) +
+ option_len);
+ *next =
+ (nm->decap_v4_next_override) ? (nm->decap_v4_next_override) : (*next);
+ *header_len = (nm->decap_v4_next_override) ? 0 : (*header_len);
+ }
+
+ return;
+}
+
+static uword
+nsh_input_map (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, u32 node_type)
+{
+ u32 n_left_from, next_index, *from, *to_next;
+ nsh_main_t *nm = &nsh_main;
+
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+ u32 next0 = NSH_NODE_NEXT_DROP, next1 = NSH_NODE_NEXT_DROP;
+ uword *entry0, *entry1;
+ nsh_base_header_t *hdr0 = 0, *hdr1 = 0;
+ u32 header_len0 = 0, header_len1 = 0;
+ u32 nsp_nsi0, nsp_nsi1;
+ u32 ttl0, ttl1;
+ u32 error0, error1;
+ nsh_map_t *map0 = 0, *map1 = 0;
+ nsh_entry_t *nsh_entry0 = 0, *nsh_entry1 = 0;
+ nsh_base_header_t *encap_hdr0 = 0, *encap_hdr1 = 0;
+ u32 encap_hdr_len0 = 0, encap_hdr_len1 = 0;
+ nsh_proxy_session_by_key_t key0, key1;
+ uword *p0, *p1;
+ nsh_proxy_session_t *proxy0, *proxy1;
+ u32 sw_if_index0 = 0, sw_if_index1 = 0;
+ ethernet_header_t dummy_eth0, dummy_eth1;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+
+ bi0 = from[0];
+ bi1 = from[1];
+ to_next[0] = bi0;
+ to_next[1] = bi1;
+ from += 2;
+ to_next += 2;
+ n_left_from -= 2;
+ n_left_to_next -= 2;
+
+ error0 = 0;
+ error1 = 0;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+ hdr0 = vlib_buffer_get_current (b0);
+ hdr1 = vlib_buffer_get_current (b1);
+
+ /* Process packet 0 */
+ if (node_type == NSH_INPUT_TYPE)
+ {
+ nsp_nsi0 = hdr0->nsp_nsi;
+ header_len0 = (hdr0->length & NSH_LEN_MASK) * 4;
+ ttl0 = (hdr0->ver_o_c & NSH_TTL_H4_MASK) << 2 |
+ (hdr0->length & NSH_TTL_L2_MASK) >> 6;
+ ttl0 = ttl0 - 1;
+ if (PREDICT_FALSE (ttl0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_INVALID_TTL;
+ goto trace0;
+ }
+ }
+ else if (node_type == NSH_CLASSIFIER_TYPE)
+ {
+ nsp_nsi0 =
+ clib_host_to_net_u32 (vnet_buffer (b0)->
+ l2_classify.opaque_index);
+ }
+ else if (node_type == NSH_AWARE_VNF_PROXY_TYPE)
+ {
+ /* Push dummy Eth header */
+ char dummy_dst_address[6] =
+ { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66 };
+ char dummy_src_address[6] =
+ { 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc };
+ clib_memcpy_fast (dummy_eth0.dst_address, dummy_dst_address, 6);
+ clib_memcpy_fast (dummy_eth0.src_address, dummy_src_address, 6);
+ dummy_eth0.type = 0x0800;
+ vlib_buffer_advance (b0, -(word) sizeof (ethernet_header_t));
+ hdr0 = vlib_buffer_get_current (b0);
+ clib_memcpy_fast (hdr0, &dummy_eth0,
+ (word) sizeof (ethernet_header_t));
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ nsp_nsi0 = nm->tunnel_index_by_sw_if_index[sw_if_index0];
+ }
+ else
+ {
+ clib_memset (&key0, 0, sizeof (key0));
+ key0.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4;
+ key0.transport_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+
+ p0 = hash_get_mem (nm->nsh_proxy_session_by_key, &key0);
+ if (PREDICT_FALSE (p0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_PROXY;
+ goto trace0;
+ }
+
+ proxy0 = pool_elt_at_index (nm->nsh_proxy_sessions, p0[0]);
+ if (PREDICT_FALSE (proxy0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_PROXY;
+ goto trace0;
+ }
+ nsp_nsi0 = proxy0->nsp_nsi;
+ }
+
+ entry0 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi0);
+ if (PREDICT_FALSE (entry0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace0;
+ }
+
+ /* Entry should point to a mapping ... */
+ map0 = pool_elt_at_index (nm->nsh_mappings, entry0[0]);
+ if (PREDICT_FALSE (map0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace0;
+ }
+
+ /* set up things for next node to transmit ie which node to handle it and where */
+ next0 = map0->next_node;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = map0->sw_if_index;
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = map0->adj_index;
+
+ if (PREDICT_FALSE (map0->nsh_action == NSH_ACTION_POP))
+ {
+ /* Manipulate MD2 */
+ if (PREDICT_FALSE (hdr0->md_type == 2))
+ {
+ nsh_md2_decap (b0, hdr0, &header_len0, &next0,
+ NSH_NODE_NEXT_DROP);
+ if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP))
+ {
+ error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
+ goto trace0;
+ }
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] =
+ map0->rx_sw_if_index;
+ }
+
+ /* Pop NSH header */
+ vlib_buffer_advance (b0, (word) header_len0);
+ goto trace0;
+ }
+
+ entry0 = hash_get_mem (nm->nsh_entry_by_key, &map0->mapped_nsp_nsi);
+ if (PREDICT_FALSE (entry0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_ENTRY;
+ goto trace0;
+ }
+
+ nsh_entry0 =
+ (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry0[0]);
+ encap_hdr0 = (nsh_base_header_t *) (nsh_entry0->rewrite);
+ /* rewrite_size should equal to (encap_hdr0->length * 4) */
+ encap_hdr_len0 = nsh_entry0->rewrite_size;
+
+ if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_SWAP))
+ {
+ /* Manipulate MD2 */
+ if (PREDICT_FALSE (hdr0->md_type == 2))
+ {
+ nsh_md2_swap (b0, hdr0, header_len0, nsh_entry0,
+ &next0, NSH_NODE_NEXT_DROP);
+ if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP))
+ {
+ error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
+ goto trace0;
+ }
+ }
+
+ /* Pop old NSH header */
+ vlib_buffer_advance (b0, (word) header_len0);
+
+ /* After processing, md2's length may be varied */
+ encap_hdr_len0 = nsh_entry0->rewrite_size;
+ /* Push new NSH header */
+ vlib_buffer_advance (b0, -(word) encap_hdr_len0);
+ hdr0 = vlib_buffer_get_current (b0);
+ clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0);
+
+ goto trace0;
+ }
+
+ if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_PUSH))
+ {
+ /* After processing, md2's length may be varied */
+ encap_hdr_len0 = nsh_entry0->rewrite_size;
+ /* Push new NSH header */
+ vlib_buffer_advance (b0, -(word) encap_hdr_len0);
+ hdr0 = vlib_buffer_get_current (b0);
+ clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0);
+
+ /* Manipulate MD2 */
+ if (PREDICT_FALSE (nsh_entry0->nsh_base.md_type == 2))
+ {
+ nsh_md2_encap (b0, hdr0, nsh_entry0);
+ }
+
+ }
+
+ trace0:
+ b0->error = error0 ? node->errors[error0] : 0;
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ nsh_input_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ clib_memcpy_fast (&(tr->trace_data), hdr0,
+ ((hdr0->length & NSH_LEN_MASK) * 4));
+ }
+
+ /* Process packet 1 */
+ if (node_type == NSH_INPUT_TYPE)
+ {
+ nsp_nsi1 = hdr1->nsp_nsi;
+ header_len1 = (hdr1->length & NSH_LEN_MASK) * 4;
+ ttl1 = (hdr1->ver_o_c & NSH_TTL_H4_MASK) << 2 |
+ (hdr1->length & NSH_TTL_L2_MASK) >> 6;
+ ttl1 = ttl1 - 1;
+ if (PREDICT_FALSE (ttl1 == 0))
+ {
+ error1 = NSH_NODE_ERROR_INVALID_TTL;
+ goto trace1;
+ }
+ }
+ else if (node_type == NSH_CLASSIFIER_TYPE)
+ {
+ nsp_nsi1 =
+ clib_host_to_net_u32 (vnet_buffer (b1)->
+ l2_classify.opaque_index);
+ }
+ else if (node_type == NSH_AWARE_VNF_PROXY_TYPE)
+ {
+ /* Push dummy Eth header */
+ char dummy_dst_address[6] =
+ { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66 };
+ char dummy_src_address[6] =
+ { 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc };
+ clib_memcpy_fast (dummy_eth1.dst_address, dummy_dst_address, 6);
+ clib_memcpy_fast (dummy_eth1.src_address, dummy_src_address, 6);
+ dummy_eth1.type = 0x0800;
+ vlib_buffer_advance (b1, -(word) sizeof (ethernet_header_t));
+ hdr1 = vlib_buffer_get_current (b1);
+ clib_memcpy_fast (hdr1, &dummy_eth1,
+ (word) sizeof (ethernet_header_t));
+
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
+ nsp_nsi1 = nm->tunnel_index_by_sw_if_index[sw_if_index1];
+ }
+ else
+ {
+ clib_memset (&key1, 0, sizeof (key1));
+ key1.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4;
+ key1.transport_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+
+ p1 = hash_get_mem (nm->nsh_proxy_session_by_key, &key1);
+ if (PREDICT_FALSE (p1 == 0))
+ {
+ error1 = NSH_NODE_ERROR_NO_PROXY;
+ goto trace1;
+ }
+
+ proxy1 = pool_elt_at_index (nm->nsh_proxy_sessions, p1[0]);
+ if (PREDICT_FALSE (proxy1 == 0))
+ {
+ error1 = NSH_NODE_ERROR_NO_PROXY;
+ goto trace1;
+ }
+ nsp_nsi1 = proxy1->nsp_nsi;
+ }
+
+ entry1 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi1);
+ if (PREDICT_FALSE (entry1 == 0))
+ {
+ error1 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace1;
+ }
+
+ /* Entry should point to a mapping ... */
+ map1 = pool_elt_at_index (nm->nsh_mappings, entry1[0]);
+ if (PREDICT_FALSE (map1 == 0))
+ {
+ error1 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace1;
+ }
+
+ /* set up things for next node to transmit ie which node to handle it and where */
+ next1 = map1->next_node;
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = map1->sw_if_index;
+ vnet_buffer (b1)->ip.adj_index[VLIB_TX] = map1->adj_index;
+
+ if (PREDICT_FALSE (map1->nsh_action == NSH_ACTION_POP))
+ {
+ /* Manipulate MD2 */
+ if (PREDICT_FALSE (hdr1->md_type == 2))
+ {
+ nsh_md2_decap (b1, hdr1, &header_len1, &next1,
+ NSH_NODE_NEXT_DROP);
+ if (PREDICT_FALSE (next1 == NSH_NODE_NEXT_DROP))
+ {
+ error1 = NSH_NODE_ERROR_INVALID_OPTIONS;
+ goto trace1;
+ }
+ vnet_buffer (b1)->sw_if_index[VLIB_RX] =
+ map1->rx_sw_if_index;
+ }
+
+ /* Pop NSH header */
+ vlib_buffer_advance (b1, (word) header_len1);
+ goto trace1;
+ }
+
+ entry1 = hash_get_mem (nm->nsh_entry_by_key, &map1->mapped_nsp_nsi);
+ if (PREDICT_FALSE (entry1 == 0))
+ {
+ error1 = NSH_NODE_ERROR_NO_ENTRY;
+ goto trace1;
+ }
+
+ nsh_entry1 =
+ (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry1[0]);
+ encap_hdr1 = (nsh_base_header_t *) (nsh_entry1->rewrite);
+ /* rewrite_size should equal to (encap_hdr0->length * 4) */
+ encap_hdr_len1 = nsh_entry1->rewrite_size;
+
+ if (PREDICT_TRUE (map1->nsh_action == NSH_ACTION_SWAP))
+ {
+ /* Manipulate MD2 */
+ if (PREDICT_FALSE (hdr1->md_type == 2))
+ {
+ nsh_md2_swap (b1, hdr1, header_len1, nsh_entry1,
+ &next1, NSH_NODE_NEXT_DROP);
+ if (PREDICT_FALSE (next1 == NSH_NODE_NEXT_DROP))
+ {
+ error1 = NSH_NODE_ERROR_INVALID_OPTIONS;
+ goto trace1;
+ }
+ }
+
+ /* Pop old NSH header */
+ vlib_buffer_advance (b1, (word) header_len1);
+
+ /* After processing, md2's length may be varied */
+ encap_hdr_len1 = nsh_entry1->rewrite_size;
+ /* Push new NSH header */
+ vlib_buffer_advance (b1, -(word) encap_hdr_len1);
+ hdr1 = vlib_buffer_get_current (b1);
+ clib_memcpy_fast (hdr1, encap_hdr1, (word) encap_hdr_len1);
+
+ goto trace1;
+ }
+
+ if (PREDICT_FALSE (map1->nsh_action == NSH_ACTION_PUSH))
+ {
+ /* After processing, md2's length may be varied */
+ encap_hdr_len1 = nsh_entry1->rewrite_size;
+ /* Push new NSH header */
+ vlib_buffer_advance (b1, -(word) encap_hdr_len1);
+ hdr1 = vlib_buffer_get_current (b1);
+ clib_memcpy_fast (hdr1, encap_hdr1, (word) encap_hdr_len1);
+
+ /* Manipulate MD2 */
+ if (PREDICT_FALSE (nsh_entry1->nsh_base.md_type == 2))
+ {
+ nsh_md2_encap (b1, hdr1, nsh_entry1);
+ }
+
+ }
+
+ trace1:
+ b1->error = error1 ? node->errors[error1] : 0;
+
+ if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ nsh_input_trace_t *tr =
+ vlib_add_trace (vm, node, b1, sizeof (*tr));
+ clib_memcpy_fast (&(tr->trace_data), hdr1,
+ ((hdr1->length & NSH_LEN_MASK) * 4));
+ }
+
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, bi1, next0,
+ next1);
+
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0 = 0;
+ vlib_buffer_t *b0 = NULL;
+ u32 next0 = NSH_NODE_NEXT_DROP;
+ uword *entry0;
+ nsh_base_header_t *hdr0 = 0;
+ u32 header_len0 = 0;
+ u32 nsp_nsi0;
+ u32 ttl0;
+ u32 error0;
+ nsh_map_t *map0 = 0;
+ nsh_entry_t *nsh_entry0 = 0;
+ nsh_base_header_t *encap_hdr0 = 0;
+ u32 encap_hdr_len0 = 0;
+ nsh_proxy_session_by_key_t key0;
+ uword *p0;
+ nsh_proxy_session_t *proxy0 = 0;
+ u32 sw_if_index0 = 0;
+ ethernet_header_t dummy_eth0;
+
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+ error0 = 0;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ hdr0 = vlib_buffer_get_current (b0);
+
+ if (node_type == NSH_INPUT_TYPE)
+ {
+ nsp_nsi0 = hdr0->nsp_nsi;
+ header_len0 = (hdr0->length & NSH_LEN_MASK) * 4;
+ ttl0 = (hdr0->ver_o_c & NSH_TTL_H4_MASK) << 2 |
+ (hdr0->length & NSH_TTL_L2_MASK) >> 6;
+ ttl0 = ttl0 - 1;
+ if (PREDICT_FALSE (ttl0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_INVALID_TTL;
+ goto trace00;
+ }
+ }
+ else if (node_type == NSH_CLASSIFIER_TYPE)
+ {
+ nsp_nsi0 =
+ clib_host_to_net_u32 (vnet_buffer (b0)->
+ l2_classify.opaque_index);
+ }
+ else if (node_type == NSH_AWARE_VNF_PROXY_TYPE)
+ {
+ /* Push dummy Eth header */
+ char dummy_dst_address[6] =
+ { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66 };
+ char dummy_src_address[6] =
+ { 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc };
+ clib_memcpy_fast (dummy_eth0.dst_address, dummy_dst_address, 6);
+ clib_memcpy_fast (dummy_eth0.src_address, dummy_src_address, 6);
+ dummy_eth0.type = 0x0800;
+ vlib_buffer_advance (b0, -(word) sizeof (ethernet_header_t));
+ hdr0 = vlib_buffer_get_current (b0);
+ clib_memcpy_fast (hdr0, &dummy_eth0,
+ (word) sizeof (ethernet_header_t));
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ nsp_nsi0 = nm->tunnel_index_by_sw_if_index[sw_if_index0];
+ }
+ else
+ {
+ clib_memset (&key0, 0, sizeof (key0));
+ key0.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4;
+ key0.transport_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+
+ p0 = hash_get_mem (nm->nsh_proxy_session_by_key, &key0);
+ if (PREDICT_FALSE (p0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_PROXY;
+ goto trace00;
+ }
+
+ proxy0 = pool_elt_at_index (nm->nsh_proxy_sessions, p0[0]);
+ if (PREDICT_FALSE (proxy0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_PROXY;
+ goto trace00;
+ }
+ nsp_nsi0 = proxy0->nsp_nsi;
+ }
+
+ entry0 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi0);
+
+ if (PREDICT_FALSE (entry0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace00;
+ }
+
+ /* Entry should point to a mapping ... */
+ map0 = pool_elt_at_index (nm->nsh_mappings, entry0[0]);
+
+ if (PREDICT_FALSE (map0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_MAPPING;
+ goto trace00;
+ }
+
+ /* set up things for next node to transmit ie which node to handle it and where */
+ next0 = map0->next_node;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = map0->sw_if_index;
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = map0->adj_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = map0->nsh_sw_if;
+
+ if (PREDICT_FALSE (map0->nsh_action == NSH_ACTION_POP))
+ {
+ /* Manipulate MD2 */
+ if (PREDICT_FALSE (hdr0->md_type == 2))
+ {
+ nsh_md2_decap (b0, hdr0, &header_len0, &next0,
+ NSH_NODE_NEXT_DROP);
+ if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP))
+ {
+ error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
+ goto trace00;
+ }
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] =
+ map0->rx_sw_if_index;
+ }
+
+ /* Pop NSH header */
+ vlib_buffer_advance (b0, (word) header_len0);
+ goto trace00;
+ }
+
+ entry0 = hash_get_mem (nm->nsh_entry_by_key, &map0->mapped_nsp_nsi);
+ if (PREDICT_FALSE (entry0 == 0))
+ {
+ error0 = NSH_NODE_ERROR_NO_ENTRY;
+ goto trace00;
+ }
+
+ nsh_entry0 =
+ (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry0[0]);
+ encap_hdr0 = (nsh_base_header_t *) (nsh_entry0->rewrite);
+ /* rewrite_size should equal to (encap_hdr0->length * 4) */
+ encap_hdr_len0 = nsh_entry0->rewrite_size;
+
+ if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_SWAP))
+ {
+ /* Manipulate MD2 */
+ if (PREDICT_FALSE (hdr0->md_type == 2))
+ {
+ nsh_md2_swap (b0, hdr0, header_len0, nsh_entry0,
+ &next0, NSH_NODE_NEXT_DROP);
+ if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP))
+ {
+ error0 = NSH_NODE_ERROR_INVALID_OPTIONS;
+ goto trace00;
+ }
+ }
+
+ /* Pop old NSH header */
+ vlib_buffer_advance (b0, (word) header_len0);
+
+ /* After processing, md2's length may be varied */
+ encap_hdr_len0 = nsh_entry0->rewrite_size;
+ /* Push new NSH header */
+ vlib_buffer_advance (b0, -(word) encap_hdr_len0);
+ hdr0 = vlib_buffer_get_current (b0);
+ clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0);
+
+ goto trace00;
+ }
+
+ if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_PUSH))
+ {
+ /* After processing, md2's length may be varied */
+ encap_hdr_len0 = nsh_entry0->rewrite_size;
+ /* Push new NSH header */
+ vlib_buffer_advance (b0, -(word) encap_hdr_len0);
+ hdr0 = vlib_buffer_get_current (b0);
+ clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0);
+ /* Manipulate MD2 */
+ if (PREDICT_FALSE (nsh_entry0->nsh_base.md_type == 2))
+ {
+ nsh_md2_encap (b0, hdr0, nsh_entry0);
+ }
+
+ }
+
+ trace00:b0->error = error0 ? node->errors[error0] : 0;
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ nsh_input_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ clib_memcpy_fast (&(tr->trace_data[0]), hdr0,
+ ((hdr0->length & NSH_LEN_MASK) * 4));
+ }
+
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+
+ }
+
+ return from_frame->n_vectors;
+}
+
+/**
+ * @brief Graph processing dispatch function for NSH Input
+ *
+ * @node nsh_input
+ * @param *vm
+ * @param *node
+ * @param *from_frame
+ *
+ * @return from_frame->n_vectors
+ *
+ */
+VLIB_NODE_FN (nsh_input) (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return nsh_input_map (vm, node, from_frame, NSH_INPUT_TYPE);
+}
+
+/**
+ * @brief Graph processing dispatch function for NSH-Proxy
+ *
+ * @node nsh_proxy
+ * @param *vm
+ * @param *node
+ * @param *from_frame
+ *
+ * @return from_frame->n_vectors
+ *
+ */
+VLIB_NODE_FN (nsh_proxy) (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return nsh_input_map (vm, node, from_frame, NSH_PROXY_TYPE);
+}
+
+/**
+ * @brief Graph processing dispatch function for NSH Classifier
+ *
+ * @node nsh_classifier
+ * @param *vm
+ * @param *node
+ * @param *from_frame
+ *
+ * @return from_frame->n_vectors
+ *
+ */
+VLIB_NODE_FN (nsh_classifier) (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return nsh_input_map (vm, node, from_frame, NSH_CLASSIFIER_TYPE);
+}
+
+/**
+ * @brief Graph processing dispatch function for NSH-AWARE-VNF-PROXY
+ *
+ * @node nsh_aware_vnf_proxy
+ * @param *vm
+ * @param *node
+ * @param *from_frame
+ *
+ * @return from_frame->n_vectors
+ *
+ */
+VLIB_NODE_FN (nsh_aware_vnf_proxy) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return nsh_input_map (vm, node, from_frame, NSH_AWARE_VNF_PROXY_TYPE);
+}
+
+static char *nsh_node_error_strings[] = {
+#define _(sym,string) string,
+ foreach_nsh_node_error
+#undef _
+};
+
+/* *INDENT-OFF* */
+
+/* register nsh-input node */
+VLIB_REGISTER_NODE (nsh_input_node) = {
+ .name = "nsh-input",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nsh_node_map_trace,
+ .format_buffer = format_nsh_header,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (nsh_node_error_strings),
+ .error_strings = nsh_node_error_strings,
+ .n_next_nodes = NSH_NODE_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [NSH_NODE_NEXT_##s] = n,
+ foreach_nsh_node_next
+#undef _
+ },
+};
+
+/* register nsh-proxy node */
+VLIB_REGISTER_NODE (nsh_proxy_node) =
+{
+ .name = "nsh-proxy",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nsh_node_map_trace,
+ .format_buffer = format_nsh_header,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (nsh_node_error_strings),
+ .error_strings = nsh_node_error_strings,
+ .n_next_nodes = NSH_NODE_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [NSH_NODE_NEXT_##s] = n,
+ foreach_nsh_node_next
+#undef _
+ },
+};
+
+/* register nsh-classifier node */
+VLIB_REGISTER_NODE (nsh_classifier_node) =
+{
+ .name = "nsh-classifier",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nsh_node_map_trace,
+ .format_buffer = format_nsh_header,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (nsh_node_error_strings),
+ .error_strings = nsh_node_error_strings,
+ .n_next_nodes = NSH_NODE_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [NSH_NODE_NEXT_##s] = n,
+ foreach_nsh_node_next
+#undef _
+ },
+};
+
+/* register nsh-aware-vnf-proxy node */
+VLIB_REGISTER_NODE (nsh_aware_vnf_proxy_node) =
+{
+ .name = "nsh-aware-vnf-proxy",
+ .vector_size = sizeof (u32),
+ .format_trace = format_nsh_node_map_trace,
+ .format_buffer = format_nsh_header,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (nsh_node_error_strings),
+ .error_strings = nsh_node_error_strings,
+ .n_next_nodes = NSH_NODE_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [NSH_NODE_NEXT_##s] = n,
+ foreach_nsh_node_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / commitdiff