aboutsummaryrefslogtreecommitdiffstats
path: root/plugins/snat-plugin/snat/snat.c
diff options
context:
space:
mode:
Diffstat (limited to 'plugins/snat-plugin/snat/snat.c')
-rw-r--r--plugins/snat-plugin/snat/snat.c1957
1 files changed, 0 insertions, 1957 deletions
diff --git a/plugins/snat-plugin/snat/snat.c b/plugins/snat-plugin/snat/snat.c
deleted file mode 100644
index bc9956841d2..00000000000
--- a/plugins/snat-plugin/snat/snat.c
+++ /dev/null
@@ -1,1957 +0,0 @@
-/*
- * snat.c - simple nat plugin
- *
- * Copyright (c) 2016 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 <vlibapi/api.h>
-#include <snat/snat.h>
-
-#include <vlibapi/api.h>
-#include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
-
-snat_main_t snat_main;
-
-/* define message IDs */
-#include <snat/snat_msg_enum.h>
-
-/* define message structures */
-#define vl_typedefs
-#include <snat/snat_all_api_h.h>
-#undef vl_typedefs
-
-/* define generated endian-swappers */
-#define vl_endianfun
-#include <snat/snat_all_api_h.h>
-#undef vl_endianfun
-
-#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
-
-/* Get the API version number */
-#define vl_api_version(n,v) static u32 api_version=(v);
-#include <snat/snat_all_api_h.h>
-#undef vl_api_version
-
-/* Macro to finish up custom dump fns */
-#define FINISH \
- vec_add1 (s, 0); \
- vl_print (handle, (char *)s); \
- vec_free (s); \
- return handle;
-
-/*
- * 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)+sm->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 = \
- 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)+sm->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);
-
-
-/* Hook up input features */
-VNET_FEATURE_INIT (ip4_snat_in2out, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "snat-in2out",
- .runs_before = VNET_FEATURES ("snat-out2in"),
-};
-VNET_FEATURE_INIT (ip4_snat_out2in, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "snat-out2in",
- .runs_before = VNET_FEATURES ("ip4-lookup"),
-};
-VNET_FEATURE_INIT (ip4_snat_in2out_worker_handoff, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "snat-in2out-worker-handoff",
- .runs_before = VNET_FEATURES ("snat-out2in-worker-handoff"),
-};
-VNET_FEATURE_INIT (ip4_snat_out2in_worker_handoff, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "snat-out2in-worker-handoff",
- .runs_before = VNET_FEATURES ("ip4-lookup"),
-};
-VNET_FEATURE_INIT (ip4_snat_in2out_fast, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "snat-in2out-fast",
- .runs_before = VNET_FEATURES ("snat-out2in-fast"),
-};
-VNET_FEATURE_INIT (ip4_snat_out2in_fast, static) = {
- .arc_name = "ip4-unicast",
- .node_name = "snat-out2in-fast",
- .runs_before = VNET_FEATURES ("ip4-lookup"),
-};
-
-
-/*
- * This routine exists to convince the vlib plugin framework that
- * we haven't accidentally copied a random .dll into the plugin directory.
- *
- * Also collects global variable pointers passed from the vpp engine
- */
-
-clib_error_t *
-vlib_plugin_register (vlib_main_t * vm, vnet_plugin_handoff_t * h,
- int from_early_init)
-{
- snat_main_t * sm = &snat_main;
- clib_error_t * error = 0;
-
- sm->vlib_main = vm;
- sm->vnet_main = h->vnet_main;
- sm->ethernet_main = h->ethernet_main;
-
- return error;
-}
-
-/*$$$$$ move to an installed header file */
-#if (1 || CLIB_DEBUG > 0) /* "trust, but verify" */
-
-#define VALIDATE_SW_IF_INDEX(mp) \
- do { u32 __sw_if_index = ntohl(mp->sw_if_index); \
- vnet_main_t *__vnm = vnet_get_main(); \
- if (pool_is_free_index(__vnm->interface_main.sw_interfaces, \
- __sw_if_index)) { \
- rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; \
- goto bad_sw_if_index; \
- } \
-} while(0);
-
-#define BAD_SW_IF_INDEX_LABEL \
-do { \
-bad_sw_if_index: \
- ; \
-} while (0);
-
-#define VALIDATE_RX_SW_IF_INDEX(mp) \
- do { u32 __rx_sw_if_index = ntohl(mp->rx_sw_if_index); \
- vnet_main_t *__vnm = vnet_get_main(); \
- if (pool_is_free_index(__vnm->interface_main.sw_interfaces, \
- __rx_sw_if_index)) { \
- rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; \
- goto bad_rx_sw_if_index; \
- } \
-} while(0);
-
-#define BAD_RX_SW_IF_INDEX_LABEL \
-do { \
-bad_rx_sw_if_index: \
- ; \
-} while (0);
-
-#define VALIDATE_TX_SW_IF_INDEX(mp) \
- do { u32 __tx_sw_if_index = ntohl(mp->tx_sw_if_index); \
- vnet_main_t *__vnm = vnet_get_main(); \
- if (pool_is_free_index(__vnm->interface_main.sw_interfaces, \
- __tx_sw_if_index)) { \
- rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; \
- goto bad_tx_sw_if_index; \
- } \
-} while(0);
-
-#define BAD_TX_SW_IF_INDEX_LABEL \
-do { \
-bad_tx_sw_if_index: \
- ; \
-} while (0);
-
-#else
-
-#define VALIDATE_SW_IF_INDEX(mp)
-#define BAD_SW_IF_INDEX_LABEL
-#define VALIDATE_RX_SW_IF_INDEX(mp)
-#define BAD_RX_SW_IF_INDEX_LABEL
-#define VALIDATE_TX_SW_IF_INDEX(mp)
-#define BAD_TX_SW_IF_INDEX_LABEL
-
-#endif /* CLIB_DEBUG > 0 */
-
-void snat_add_address (snat_main_t *sm, ip4_address_t *addr)
-{
- snat_address_t * ap;
-
- /* Check if address already exists */
- vec_foreach (ap, sm->addresses)
- {
- if (ap->addr.as_u32 == addr->as_u32)
- return;
- }
-
- vec_add2 (sm->addresses, ap, 1);
- ap->addr = *addr;
- clib_bitmap_alloc (ap->busy_port_bitmap, 65535);
-}
-
-static int is_snat_address_used_in_static_mapping (snat_main_t *sm,
- ip4_address_t addr)
-{
- snat_static_mapping_t *m;
- pool_foreach (m, sm->static_mappings,
- ({
- if (m->external_addr.as_u32 == addr.as_u32)
- return 1;
- }));
-
- return 0;
-}
-
-int snat_del_address (snat_main_t *sm, ip4_address_t addr)
-{
- snat_address_t *a = 0;
- snat_session_t *ses;
- u32 *ses_to_be_removed = 0, *ses_index;
- clib_bihash_kv_8_8_t kv, value;
- snat_user_key_t user_key;
- snat_user_t *u;
- snat_main_per_thread_data_t *tsm;
-
- int i;
-
- /* Find SNAT address */
- for (i=0; i < vec_len (sm->addresses); i++)
- {
- if (sm->addresses[i].addr.as_u32 == addr.as_u32)
- {
- a = sm->addresses + i;
- break;
- }
- }
- if (!a)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-
- /* Check if address is used in some static mapping */
- if (is_snat_address_used_in_static_mapping(sm, addr))
- {
- clib_warning ("address used in static mapping");
- return VNET_API_ERROR_UNSPECIFIED;
- }
-
- /* Delete sessions using address */
- if (a->busy_ports)
- {
- vec_foreach (tsm, sm->per_thread_data)
- {
- pool_foreach (ses, tsm->sessions, ({
- if (ses->out2in.addr.as_u32 == addr.as_u32)
- {
- vec_add1 (ses_to_be_removed, ses - tsm->sessions);
- kv.key = ses->in2out.as_u64;
- clib_bihash_add_del_8_8 (&sm->in2out, &kv, 0);
- kv.key = ses->out2in.as_u64;
- clib_bihash_add_del_8_8 (&sm->out2in, &kv, 0);
- clib_dlist_remove (tsm->list_pool, ses->per_user_index);
- user_key.addr = ses->in2out.addr;
- user_key.fib_index = ses->in2out.fib_index;
- kv.key = user_key.as_u64;
- if (!clib_bihash_search_8_8 (&sm->user_hash, &kv, &value))
- {
- u = pool_elt_at_index (tsm->users, value.value);
- u->nsessions--;
- }
- }
- }));
-
- vec_foreach (ses_index, ses_to_be_removed)
- pool_put_index (tsm->sessions, ses_index[0]);
-
- vec_free (ses_to_be_removed);
- }
- }
-
- vec_del1 (sm->addresses, i);
-
- return 0;
-}
-
-static void increment_v4_address (ip4_address_t * a)
-{
- u32 v;
-
- v = clib_net_to_host_u32(a->as_u32) + 1;
- a->as_u32 = clib_host_to_net_u32(v);
-}
-
-/**
- * @brief Add static mapping.
- *
- * Create static mapping between local addr+port and external addr+port.
- *
- * @param l_addr Local IPv4 address.
- * @param e_addr External IPv4 address.
- * @param l_port Local port number.
- * @param e_port External port number.
- * @param vrf_id VRF ID.
- * @param addr_only If 0 address port and pair mapping, otherwise address only.
- * @param is_add If 0 delete static mapping, otherwise add.
- *
- * @returns
- */
-int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr,
- u16 l_port, u16 e_port, u32 vrf_id, int addr_only,
- int is_add)
-{
- snat_main_t * sm = &snat_main;
- snat_static_mapping_t *m;
- snat_static_mapping_key_t m_key;
- clib_bihash_kv_8_8_t kv, value;
- snat_address_t *a = 0;
- u32 fib_index = ~0;
- uword * p;
- int i;
-
- /* If outside FIB index is not resolved yet */
- if (sm->outside_fib_index == ~0)
- {
- p = hash_get (sm->ip4_main->fib_index_by_table_id, sm->outside_vrf_id);
- if (!p)
- return VNET_API_ERROR_NO_SUCH_FIB;
- sm->outside_fib_index = p[0];
- }
-
- m_key.addr = e_addr;
- m_key.port = addr_only ? 0 : e_port;
- m_key.fib_index = sm->outside_fib_index;
- kv.key = m_key.as_u64;
- if (clib_bihash_search_8_8 (&sm->static_mapping_by_external, &kv, &value))
- m = 0;
- else
- m = pool_elt_at_index (sm->static_mappings, value.value);
-
- if (is_add)
- {
- if (m)
- return VNET_API_ERROR_VALUE_EXIST;
-
- /* Convert VRF id to FIB index */
- if (vrf_id != ~0)
- {
- p = hash_get (sm->ip4_main->fib_index_by_table_id, vrf_id);
- if (!p)
- return VNET_API_ERROR_NO_SUCH_FIB;
- fib_index = p[0];
- }
- /* If not specified use inside VRF id from SNAT plugin startup config */
- else
- {
- if (sm->inside_fib_index == ~0)
- {
- p = hash_get (sm->ip4_main->fib_index_by_table_id, sm->inside_vrf_id);
- if (!p)
- return VNET_API_ERROR_NO_SUCH_FIB;
- fib_index = p[0];
- sm->inside_fib_index = fib_index;
- }
- else
- fib_index = sm->inside_fib_index;
-
- vrf_id = sm->inside_vrf_id;
- }
-
- /* Find external address in allocated addresses and reserve port for
- address and port pair mapping when dynamic translations enabled */
- if (!addr_only && !(sm->static_mapping_only))
- {
- for (i = 0; i < vec_len (sm->addresses); i++)
- {
- if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
- {
- a = sm->addresses + i;
- /* External port must be unused */
- if (clib_bitmap_get_no_check (a->busy_port_bitmap, e_port))
- return VNET_API_ERROR_INVALID_VALUE;
- clib_bitmap_set_no_check (a->busy_port_bitmap, e_port, 1);
- if (e_port > 1024)
- a->busy_ports++;
-
- break;
- }
- }
- /* External address must be allocated */
- if (!a)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
- }
-
- pool_get (sm->static_mappings, m);
- memset (m, 0, sizeof (*m));
- m->local_addr = l_addr;
- m->external_addr = e_addr;
- m->addr_only = addr_only;
- m->vrf_id = vrf_id;
- m->fib_index = fib_index;
- if (!addr_only)
- {
- m->local_port = l_port;
- m->external_port = e_port;
- }
-
- m_key.addr = m->local_addr;
- m_key.port = m->local_port;
- m_key.fib_index = m->fib_index;
- kv.key = m_key.as_u64;
- kv.value = m - sm->static_mappings;
- clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 1);
-
- m_key.addr = m->external_addr;
- m_key.port = m->external_port;
- m_key.fib_index = sm->outside_fib_index;
- kv.key = m_key.as_u64;
- kv.value = m - sm->static_mappings;
- clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 1);
-
- /* Assign worker */
- if (sm->workers)
- {
- snat_user_key_t w_key0;
- snat_static_mapping_key_t w_key1;
-
- w_key0.addr = m->local_addr;
- w_key0.fib_index = m->fib_index;
- kv.key = w_key0.as_u64;
-
- if (clib_bihash_search_8_8 (&sm->worker_by_in, &kv, &value))
- {
- kv.value = sm->first_worker_index +
- sm->workers[sm->next_worker++ % vec_len (sm->workers)];
-
- clib_bihash_add_del_8_8 (&sm->worker_by_in, &kv, 1);
- }
- else
- {
- kv.value = value.value;
- }
-
- w_key1.addr = m->external_addr;
- w_key1.port = clib_host_to_net_u16 (m->external_port);
- w_key1.fib_index = sm->outside_fib_index;
- kv.key = w_key1.as_u64;
- clib_bihash_add_del_8_8 (&sm->worker_by_out, &kv, 1);
- }
- }
- else
- {
- if (!m)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-
- /* Free external address port */
- if (!addr_only && !(sm->static_mapping_only))
- {
- for (i = 0; i < vec_len (sm->addresses); i++)
- {
- if (sm->addresses[i].addr.as_u32 == e_addr.as_u32)
- {
- a = sm->addresses + i;
- clib_bitmap_set_no_check (a->busy_port_bitmap, e_port, 0);
- a->busy_ports--;
-
- break;
- }
- }
- }
-
- m_key.addr = m->local_addr;
- m_key.port = m->local_port;
- m_key.fib_index = m->fib_index;
- kv.key = m_key.as_u64;
- clib_bihash_add_del_8_8(&sm->static_mapping_by_local, &kv, 0);
-
- m_key.addr = m->external_addr;
- m_key.port = m->external_port;
- m_key.fib_index = sm->outside_fib_index;
- kv.key = m_key.as_u64;
- clib_bihash_add_del_8_8(&sm->static_mapping_by_external, &kv, 0);
-
- /* Delete session(s) for static mapping if exist */
- if (!(sm->static_mapping_only) ||
- (sm->static_mapping_only && sm->static_mapping_connection_tracking))
- {
- snat_user_key_t u_key;
- snat_user_t *u;
- dlist_elt_t * head, * elt;
- u32 elt_index, head_index, del_elt_index;
- u32 ses_index;
- u64 user_index;
- snat_session_t * s;
- snat_main_per_thread_data_t *tsm;
-
- u_key.addr = m->local_addr;
- u_key.fib_index = m->fib_index;
- kv.key = u_key.as_u64;
- if (!clib_bihash_search_8_8 (&sm->user_hash, &kv, &value))
- {
- user_index = value.value;
- if (!clib_bihash_search_8_8 (&sm->worker_by_in, &kv, &value))
- tsm = vec_elt_at_index (sm->per_thread_data, value.value);
- else
- tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
- u = pool_elt_at_index (tsm->users, user_index);
- if (u->nstaticsessions)
- {
- head_index = u->sessions_per_user_list_head_index;
- head = pool_elt_at_index (tsm->list_pool, head_index);
- elt_index = head->next;
- elt = pool_elt_at_index (tsm->list_pool, elt_index);
- ses_index = elt->value;
- while (ses_index != ~0)
- {
- s = pool_elt_at_index (tsm->sessions, ses_index);
- del_elt_index = elt_index;
- elt_index = elt->next;
- elt = pool_elt_at_index (tsm->list_pool, elt_index);
- ses_index = elt->value;
-
- if (!addr_only)
- {
- if ((s->out2in.addr.as_u32 != e_addr.as_u32) &&
- (clib_net_to_host_u16 (s->out2in.port) != e_port))
- continue;
- }
-
- value.key = s->in2out.as_u64;
- clib_bihash_add_del_8_8 (&sm->in2out, &value, 0);
- value.key = s->out2in.as_u64;
- clib_bihash_add_del_8_8 (&sm->out2in, &value, 0);
- pool_put (tsm->sessions, s);
-
- clib_dlist_remove (tsm->list_pool, del_elt_index);
- pool_put_index (tsm->list_pool, del_elt_index);
- u->nstaticsessions--;
-
- if (!addr_only)
- break;
- }
- if (addr_only)
- {
- pool_put (tsm->users, u);
- clib_bihash_add_del_8_8 (&sm->user_hash, &kv, 0);
- }
- }
- }
- }
-
- /* Delete static mapping from pool */
- pool_put (sm->static_mappings, m);
- }
-
- return 0;
-}
-
-static int snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
-{
- snat_main_t *sm = &snat_main;
- snat_interface_t *i;
- const char * feature_name;
-
- if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
- feature_name = is_inside ? "snat-in2out-fast" : "snat-out2in-fast";
- else
- {
- if (sm->num_workers > 1)
- feature_name = is_inside ? "snat-in2out-worker-handoff" : "snat-out2in-worker-handoff";
- else
- feature_name = is_inside ? "snat-in2out" : "snat-out2in";
- }
-
- vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index,
- !is_del, 0, 0);
-
- if (sm->fq_in2out_index == ~0)
- sm->fq_in2out_index = vlib_frame_queue_main_init (snat_in2out_node.index, 0);
-
- if (sm->fq_out2in_index == ~0)
- sm->fq_out2in_index = vlib_frame_queue_main_init (snat_out2in_node.index, 0);
-
- pool_foreach (i, sm->interfaces,
- ({
- if (i->sw_if_index == sw_if_index)
- {
- if (is_del)
- pool_put (sm->interfaces, i);
- else
- return VNET_API_ERROR_VALUE_EXIST;
-
- return 0;
- }
- }));
-
- if (is_del)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-
- pool_get (sm->interfaces, i);
- i->sw_if_index = sw_if_index;
- i->is_inside = is_inside;
-
- return 0;
-}
-
-static int snat_set_workers (uword * bitmap)
-{
- snat_main_t *sm = &snat_main;
- int i;
-
- if (sm->num_workers < 2)
- return VNET_API_ERROR_FEATURE_DISABLED;
-
- if (clib_bitmap_last_set (bitmap) >= sm->num_workers)
- return VNET_API_ERROR_INVALID_WORKER;
-
- vec_free (sm->workers);
- clib_bitmap_foreach (i, bitmap,
- ({
- vec_add1(sm->workers, i);
- }));
-
- return 0;
-}
-
-static void
-vl_api_snat_add_address_range_t_handler
-(vl_api_snat_add_address_range_t * mp)
-{
- snat_main_t * sm = &snat_main;
- vl_api_snat_add_address_range_reply_t * rmp;
- ip4_address_t this_addr;
- u32 start_host_order, end_host_order;
- int i, count;
- int rv = 0;
- u32 * tmp;
-
- if (mp->is_ip4 != 1)
- {
- rv = VNET_API_ERROR_UNIMPLEMENTED;
- goto send_reply;
- }
-
- if (sm->static_mapping_only)
- {
- rv = VNET_API_ERROR_FEATURE_DISABLED;
- goto send_reply;
- }
-
- tmp = (u32 *) mp->first_ip_address;
- start_host_order = clib_host_to_net_u32 (tmp[0]);
- tmp = (u32 *) mp->last_ip_address;
- end_host_order = clib_host_to_net_u32 (tmp[0]);
-
- count = (end_host_order - start_host_order) + 1;
-
- if (count > 1024)
- clib_warning ("%U - %U, %d addresses...",
- format_ip4_address, mp->first_ip_address,
- format_ip4_address, mp->last_ip_address,
- count);
-
- memcpy (&this_addr.as_u8, mp->first_ip_address, 4);
-
- for (i = 0; i < count; i++)
- {
- if (mp->is_add)
- snat_add_address (sm, &this_addr);
- else
- rv = snat_del_address (sm, this_addr);
-
- if (rv)
- goto send_reply;
-
- increment_v4_address (&this_addr);
- }
-
- send_reply:
- REPLY_MACRO (VL_API_SNAT_ADD_ADDRESS_RANGE_REPLY);
-}
-
-static void *vl_api_snat_add_address_range_t_print
-(vl_api_snat_add_address_range_t *mp, void * handle)
-{
- u8 * s;
-
- s = format (0, "SCRIPT: snat_add_address_range ");
- s = format (s, "%U ", format_ip4_address, mp->first_ip_address);
- if (memcmp (mp->first_ip_address, mp->last_ip_address, 4))
- {
- s = format (s, " - %U ", format_ip4_address, mp->last_ip_address);
- }
- FINISH;
-}
-
-static void
-send_snat_address_details
-(snat_address_t * a, unix_shared_memory_queue_t * q, u32 context)
-{
- vl_api_snat_address_details_t *rmp;
- snat_main_t * sm = &snat_main;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_SNAT_ADDRESS_DETAILS+sm->msg_id_base);
- rmp->is_ip4 = 1;
- clib_memcpy (rmp->ip_address, &(a->addr), 4);
- rmp->context = context;
-
- vl_msg_api_send_shmem (q, (u8 *) & rmp);
-}
-
-static void
-vl_api_snat_address_dump_t_handler
-(vl_api_snat_address_dump_t * mp)
-{
- unix_shared_memory_queue_t *q;
- snat_main_t * sm = &snat_main;
- snat_address_t * a;
-
- q = vl_api_client_index_to_input_queue (mp->client_index);
- if (q == 0)
- return;
-
- vec_foreach (a, sm->addresses)
- send_snat_address_details (a, q, mp->context);
-}
-
-static void *vl_api_snat_address_dump_t_print
-(vl_api_snat_address_dump_t *mp, void * handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: snat_address_dump ");
-
- FINISH;
-}
-
-static void
-vl_api_snat_interface_add_del_feature_t_handler
-(vl_api_snat_interface_add_del_feature_t * mp)
-{
- snat_main_t * sm = &snat_main;
- vl_api_snat_interface_add_del_feature_reply_t * rmp;
- u8 is_del = mp->is_add == 0;
- u32 sw_if_index = ntohl(mp->sw_if_index);
- int rv = 0;
-
- VALIDATE_SW_IF_INDEX(mp);
-
- rv = snat_interface_add_del (sw_if_index, mp->is_inside, is_del);
-
- BAD_SW_IF_INDEX_LABEL;
-
- REPLY_MACRO(VL_API_SNAT_INTERFACE_ADD_DEL_FEATURE_REPLY);
-}
-
-static void *vl_api_snat_interface_add_del_feature_t_print
-(vl_api_snat_interface_add_del_feature_t * mp, void *handle)
-{
- u8 * s;
-
- s = format (0, "SCRIPT: snat_interface_add_del_feature ");
- s = format (s, "sw_if_index %d %s %s",
- clib_host_to_net_u32(mp->sw_if_index),
- mp->is_inside ? "in":"out",
- mp->is_add ? "" : "del");
-
- FINISH;
-}
-
-static void
-send_snat_interface_details
-(snat_interface_t * i, unix_shared_memory_queue_t * q, u32 context)
-{
- vl_api_snat_interface_details_t *rmp;
- snat_main_t * sm = &snat_main;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_SNAT_INTERFACE_DETAILS+sm->msg_id_base);
- rmp->sw_if_index = ntohl (i->sw_if_index);
- rmp->is_inside = i->is_inside;
- rmp->context = context;
-
- vl_msg_api_send_shmem (q, (u8 *) & rmp);
-}
-
-static void
-vl_api_snat_interface_dump_t_handler
-(vl_api_snat_interface_dump_t * mp)
-{
- unix_shared_memory_queue_t *q;
- snat_main_t * sm = &snat_main;
- snat_interface_t * i;
-
- q = vl_api_client_index_to_input_queue (mp->client_index);
- if (q == 0)
- return;
-
- pool_foreach (i, sm->interfaces,
- ({
- send_snat_interface_details(i, q, mp->context);
- }));
-}
-
-static void *vl_api_snat_interface_dump_t_print
-(vl_api_snat_interface_dump_t *mp, void * handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: snat_interface_dump ");
-
- FINISH;
-}static void
-
-vl_api_snat_add_static_mapping_t_handler
-(vl_api_snat_add_static_mapping_t * mp)
-{
- snat_main_t * sm = &snat_main;
- vl_api_snat_add_static_mapping_reply_t * rmp;
- ip4_address_t local_addr, external_addr;
- u16 local_port = 0, external_port = 0;
- u32 vrf_id;
- int rv = 0;
-
- if (mp->is_ip4 != 1)
- {
- rv = VNET_API_ERROR_UNIMPLEMENTED;
- goto send_reply;
- }
-
- memcpy (&local_addr.as_u8, mp->local_ip_address, 4);
- memcpy (&external_addr.as_u8, mp->external_ip_address, 4);
- if (mp->addr_only == 0)
- {
- local_port = clib_net_to_host_u16 (mp->local_port);
- external_port = clib_net_to_host_u16 (mp->external_port);
- }
- vrf_id = clib_net_to_host_u32 (mp->vrf_id);
-
- rv = snat_add_static_mapping(local_addr, external_addr, local_port,
- external_port, vrf_id, mp->addr_only,
- mp->is_add);
-
- send_reply:
- REPLY_MACRO (VL_API_SNAT_ADD_ADDRESS_RANGE_REPLY);
-}
-
-static void *vl_api_snat_add_static_mapping_t_print
-(vl_api_snat_add_static_mapping_t *mp, void * handle)
-{
- u8 * s;
-
- s = format (0, "SCRIPT: snat_add_static_mapping ");
- s = format (s, "local_addr %U external_addr %U ",
- format_ip4_address, mp->local_ip_address,
- format_ip4_address, mp->external_ip_address);
-
- if (mp->addr_only == 0)
- s = format (s, "local_port %d external_port %d ",
- clib_net_to_host_u16 (mp->local_port),
- clib_net_to_host_u16 (mp->external_port));
-
- if (mp->vrf_id != ~0)
- s = format (s, "vrf %d", clib_net_to_host_u32 (mp->vrf_id));
-
- FINISH;
-}
-
-static void
-send_snat_static_mapping_details
-(snat_static_mapping_t * m, unix_shared_memory_queue_t * q, u32 context)
-{
- vl_api_snat_static_mapping_details_t *rmp;
- snat_main_t * sm = &snat_main;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_SNAT_STATIC_MAPPING_DETAILS+sm->msg_id_base);
- rmp->is_ip4 = 1;
- rmp->addr_only = m->addr_only;
- clib_memcpy (rmp->local_ip_address, &(m->local_addr), 4);
- clib_memcpy (rmp->external_ip_address, &(m->external_addr), 4);
- rmp->local_port = htons (m->local_port);
- rmp->external_port = htons (m->external_port);
- rmp->vrf_id = htonl (m->vrf_id);
- rmp->context = context;
-
- vl_msg_api_send_shmem (q, (u8 *) & rmp);
-}
-
-static void
-vl_api_snat_static_mapping_dump_t_handler
-(vl_api_snat_static_mapping_dump_t * mp)
-{
- unix_shared_memory_queue_t *q;
- snat_main_t * sm = &snat_main;
- snat_static_mapping_t * m;
-
- q = vl_api_client_index_to_input_queue (mp->client_index);
- if (q == 0)
- return;
-
- pool_foreach (m, sm->static_mappings,
- ({
- send_snat_static_mapping_details (m, q, mp->context);
- }));
-}
-
-static void *vl_api_snat_static_mapping_dump_t_print
-(vl_api_snat_static_mapping_dump_t *mp, void * handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: snat_static_mapping_dump ");
-
- FINISH;
-}
-
-static void
-vl_api_snat_control_ping_t_handler
-(vl_api_snat_control_ping_t * mp)
-{
- vl_api_snat_control_ping_reply_t *rmp;
- snat_main_t * sm = &snat_main;
- int rv = 0;
-
- REPLY_MACRO2(VL_API_SNAT_CONTROL_PING_REPLY,
- ({
- rmp->vpe_pid = ntohl (getpid());
- }));
-}
-
-static void *vl_api_snat_control_ping_t_print
-(vl_api_snat_control_ping_t *mp, void * handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: snat_control_ping ");
-
- FINISH;
-}
-
-static void
-vl_api_snat_show_config_t_handler
-(vl_api_snat_show_config_t * mp)
-{
- vl_api_snat_show_config_reply_t *rmp;
- snat_main_t * sm = &snat_main;
- int rv = 0;
-
- REPLY_MACRO2(VL_API_SNAT_SHOW_CONFIG_REPLY,
- ({
- rmp->translation_buckets = htonl (sm->translation_buckets);
- rmp->translation_memory_size = htonl (sm->translation_memory_size);
- rmp->user_buckets = htonl (sm->user_buckets);
- rmp->user_memory_size = htonl (sm->user_memory_size);
- rmp->max_translations_per_user = htonl (sm->max_translations_per_user);
- rmp->outside_vrf_id = htonl (sm->outside_vrf_id);
- rmp->inside_vrf_id = htonl (sm->inside_vrf_id);
- rmp->static_mapping_only = sm->static_mapping_only;
- rmp->static_mapping_connection_tracking =
- sm->static_mapping_connection_tracking;
- }));
-}
-
-static void *vl_api_snat_show_config_t_print
-(vl_api_snat_show_config_t *mp, void * handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: snat_show_config ");
-
- FINISH;
-}
-
-static void
-vl_api_snat_set_workers_t_handler
-(vl_api_snat_set_workers_t * mp)
-{
- snat_main_t * sm = &snat_main;
- vl_api_snat_set_workers_reply_t * rmp;
- int rv = 0;
- uword *bitmap = 0;
- u64 mask = clib_net_to_host_u64 (mp->worker_mask);
-
- if (sm->num_workers < 2)
- {
- rv = VNET_API_ERROR_FEATURE_DISABLED;
- goto send_reply;
- }
-
- bitmap = clib_bitmap_set_multiple (bitmap, 0, mask, BITS (mask));
- rv = snat_set_workers(bitmap);
- clib_bitmap_free (bitmap);
-
- send_reply:
- REPLY_MACRO (VL_API_SNAT_SET_WORKERS_REPLY);
-}
-
-static void *vl_api_snat_set_workers_t_print
-(vl_api_snat_set_workers_t *mp, void * handle)
-{
- u8 * s;
- uword *bitmap = 0;
- u8 first = 1;
- int i;
- u64 mask = clib_net_to_host_u64 (mp->worker_mask);
-
- s = format (0, "SCRIPT: snat_set_workers ");
- bitmap = clib_bitmap_set_multiple (bitmap, 0, mask, BITS (mask));
- clib_bitmap_foreach (i, bitmap,
- ({
- if (first)
- s = format (s, "%d", i);
- else
- s = format (s, ",%d", i);
- first = 0;
- }));
- clib_bitmap_free (bitmap);
- FINISH;
-}
-
-static void
-send_snat_worker_details
-(u32 worker_index, unix_shared_memory_queue_t * q, u32 context)
-{
- vl_api_snat_worker_details_t *rmp;
- snat_main_t * sm = &snat_main;
- vlib_worker_thread_t *w =
- vlib_worker_threads + worker_index + sm->first_worker_index;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_SNAT_WORKER_DETAILS+sm->msg_id_base);
- rmp->context = context;
- rmp->worker_index = htonl (worker_index);
- rmp->lcore_id = htonl (w->lcore_id);
- strncpy ((char *) rmp->name, (char *) w->name, ARRAY_LEN (rmp->name) - 1);
-
- vl_msg_api_send_shmem (q, (u8 *) & rmp);
-}
-
-static void
-vl_api_snat_worker_dump_t_handler
-(vl_api_snat_worker_dump_t * mp)
-{
- unix_shared_memory_queue_t *q;
- snat_main_t * sm = &snat_main;
- u32 * worker_index;
-
- q = vl_api_client_index_to_input_queue (mp->client_index);
- if (q == 0)
- return;
-
- vec_foreach (worker_index, sm->workers)
- {
- send_snat_worker_details(*worker_index, q, mp->context);
- }
-}
-
-static void *vl_api_snat_worker_dump_t_print
-(vl_api_snat_worker_dump_t *mp, void * handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: snat_worker_dump ");
-
- FINISH;
-}
-
-/* List of message types that this plugin understands */
-#define foreach_snat_plugin_api_msg \
-_(SNAT_ADD_ADDRESS_RANGE, snat_add_address_range) \
-_(SNAT_INTERFACE_ADD_DEL_FEATURE, snat_interface_add_del_feature) \
-_(SNAT_ADD_STATIC_MAPPING, snat_add_static_mapping) \
-_(SNAT_CONTROL_PING, snat_control_ping) \
-_(SNAT_STATIC_MAPPING_DUMP, snat_static_mapping_dump) \
-_(SNAT_SHOW_CONFIG, snat_show_config) \
-_(SNAT_ADDRESS_DUMP, snat_address_dump) \
-_(SNAT_INTERFACE_DUMP, snat_interface_dump) \
-_(SNAT_SET_WORKERS, snat_set_workers) \
-_(SNAT_WORKER_DUMP, snat_worker_dump)
-
-/* Set up the API message handling tables */
-static clib_error_t *
-snat_plugin_api_hookup (vlib_main_t *vm)
-{
- snat_main_t * sm __attribute__ ((unused)) = &snat_main;
-#define _(N,n) \
- vl_msg_api_set_handlers((VL_API_##N + sm->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_snat_plugin_api_msg;
-#undef _
-
- return 0;
-}
-
-#define vl_msg_name_crc_list
-#include <snat/snat_all_api_h.h>
-#undef vl_msg_name_crc_list
-
-static void
-setup_message_id_table (snat_main_t * sm, api_main_t * am)
-{
-#define _(id,n,crc) \
- vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + sm->msg_id_base);
- foreach_vl_msg_name_crc_snat;
-#undef _
-}
-
-static void plugin_custom_dump_configure (snat_main_t * sm)
-{
-#define _(n,f) sm->api_main->msg_print_handlers \
- [VL_API_##n + sm->msg_id_base] \
- = (void *) vl_api_##f##_t_print;
- foreach_snat_plugin_api_msg;
-#undef _
-}
-
-static clib_error_t * snat_init (vlib_main_t * vm)
-{
- snat_main_t * sm = &snat_main;
- clib_error_t * error = 0;
- ip4_main_t * im = &ip4_main;
- ip_lookup_main_t * lm = &im->lookup_main;
- u8 * name;
- uword *p;
- vlib_thread_registration_t *tr;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
- uword *bitmap = 0;
- u32 i;
-
- name = format (0, "snat_%08x%c", api_version, 0);
-
- /* Ask for a correctly-sized block of API message decode slots */
- sm->msg_id_base = vl_msg_api_get_msg_ids
- ((char *) name, VL_MSG_FIRST_AVAILABLE);
-
- sm->vlib_main = vm;
- sm->vnet_main = vnet_get_main();
- sm->ip4_main = im;
- sm->ip4_lookup_main = lm;
- sm->api_main = &api_main;
- sm->first_worker_index = 0;
- sm->next_worker = 0;
- sm->num_workers = 0;
- sm->workers = 0;
- sm->fq_in2out_index = ~0;
- sm->fq_out2in_index = ~0;
-
- p = hash_get_mem (tm->thread_registrations_by_name, "workers");
- if (p)
- {
- tr = (vlib_thread_registration_t *) p[0];
- if (tr)
- {
- sm->num_workers = tr->count;
- sm->first_worker_index = tr->first_index;
- }
- }
-
- /* Use all available workers by default */
- if (sm->num_workers > 1)
- {
- for (i=0; i < sm->num_workers; i++)
- bitmap = clib_bitmap_set (bitmap, i, 1);
- snat_set_workers(bitmap);
- clib_bitmap_free (bitmap);
- }
-
- error = snat_plugin_api_hookup (vm);
-
- /* Add our API messages to the global name_crc hash table */
- setup_message_id_table (sm, &api_main);
-
- plugin_custom_dump_configure (sm);
- vec_free(name);
-
- return error;
-}
-
-VLIB_INIT_FUNCTION (snat_init);
-
-void snat_free_outside_address_and_port (snat_main_t * sm,
- snat_session_key_t * k,
- u32 address_index)
-{
- snat_address_t *a;
- u16 port_host_byte_order = clib_net_to_host_u16 (k->port);
-
- ASSERT (address_index < vec_len (sm->addresses));
-
- a = sm->addresses + address_index;
-
- ASSERT (clib_bitmap_get_no_check (a->busy_port_bitmap,
- port_host_byte_order) == 1);
-
- clib_bitmap_set_no_check (a->busy_port_bitmap, port_host_byte_order, 0);
- a->busy_ports--;
-}
-
-/**
- * @brief Match SNAT static mapping.
- *
- * @param sm SNAT main.
- * @param match Address and port to match.
- * @param mapping External or local address and port of the matched mapping.
- * @param by_external If 0 match by local address otherwise match by external
- * address.
- *
- * @returns 0 if match found otherwise 1.
- */
-int snat_static_mapping_match (snat_main_t * sm,
- snat_session_key_t match,
- snat_session_key_t * mapping,
- u8 by_external)
-{
- clib_bihash_kv_8_8_t kv, value;
- snat_static_mapping_t *m;
- snat_static_mapping_key_t m_key;
- clib_bihash_8_8_t *mapping_hash = &sm->static_mapping_by_local;
-
- if (by_external)
- mapping_hash = &sm->static_mapping_by_external;
-
- m_key.addr = match.addr;
- m_key.port = clib_net_to_host_u16 (match.port);
- m_key.fib_index = match.fib_index;
-
- kv.key = m_key.as_u64;
-
- if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
- {
- /* Try address only mapping */
- m_key.port = 0;
- kv.key = m_key.as_u64;
- if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
- return 1;
- }
-
- m = pool_elt_at_index (sm->static_mappings, value.value);
-
- if (by_external)
- {
- mapping->addr = m->local_addr;
- /* Address only mapping doesn't change port */
- mapping->port = m->addr_only ? match.port
- : clib_host_to_net_u16 (m->local_port);
- mapping->fib_index = m->fib_index;
- }
- else
- {
- mapping->addr = m->external_addr;
- /* Address only mapping doesn't change port */
- mapping->port = m->addr_only ? match.port
- : clib_host_to_net_u16 (m->external_port);
- mapping->fib_index = sm->outside_fib_index;
- }
-
- return 0;
-}
-
-int snat_alloc_outside_address_and_port (snat_main_t * sm,
- snat_session_key_t * k,
- u32 * address_indexp)
-{
- int i;
- snat_address_t *a;
- u32 portnum;
-
- for (i = 0; i < vec_len (sm->addresses); i++)
- {
- if (sm->addresses[i].busy_ports < (65535-1024))
- {
- a = sm->addresses + i;
-
- while (1)
- {
- portnum = random_u32 (&sm->random_seed);
- portnum &= 0xFFFF;
- if (portnum < 1024)
- continue;
- if (clib_bitmap_get_no_check (a->busy_port_bitmap, portnum))
- continue;
- clib_bitmap_set_no_check (a->busy_port_bitmap, portnum, 1);
- a->busy_ports++;
- /* Caller sets protocol and fib index */
- k->addr = a->addr;
- k->port = clib_host_to_net_u16(portnum);
- *address_indexp = i;
- return 0;
- }
- }
- }
- /* Totally out of translations to use... */
- return 1;
-}
-
-
-static clib_error_t *
-add_address_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, *line_input = &_line_input;
- snat_main_t * sm = &snat_main;
- ip4_address_t start_addr, end_addr, this_addr;
- u32 start_host_order, end_host_order;
- int i, count;
- int is_add = 1;
- int rv = 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, "%U - %U",
- unformat_ip4_address, &start_addr,
- unformat_ip4_address, &end_addr))
- ;
- else if (unformat (line_input, "%U", unformat_ip4_address, &start_addr))
- end_addr = start_addr;
- else if (unformat (line_input, "del"))
- is_add = 0;
- else
- return clib_error_return (0, "unknown input '%U'",
- format_unformat_error, input);
- }
- unformat_free (line_input);
-
- if (sm->static_mapping_only)
- return clib_error_return (0, "static mapping only mode");
-
- start_host_order = clib_host_to_net_u32 (start_addr.as_u32);
- end_host_order = clib_host_to_net_u32 (end_addr.as_u32);
-
- if (end_host_order < start_host_order)
- return clib_error_return (0, "end address less than start address");
-
- count = (end_host_order - start_host_order) + 1;
-
- if (count > 1024)
- clib_warning ("%U - %U, %d addresses...",
- format_ip4_address, &start_addr,
- format_ip4_address, &end_addr,
- count);
-
- this_addr = start_addr;
-
- for (i = 0; i < count; i++)
- {
- if (is_add)
- snat_add_address (sm, &this_addr);
- else
- rv = snat_del_address (sm, this_addr);
-
- switch (rv)
- {
- case VNET_API_ERROR_NO_SUCH_ENTRY:
- return clib_error_return (0, "S-NAT address not exist.");
- break;
- case VNET_API_ERROR_UNSPECIFIED:
- return clib_error_return (0, "S-NAT address used in static mapping.");
- break;
- default:
- break;
- }
-
- increment_v4_address (&this_addr);
- }
-
- return 0;
-}
-
-VLIB_CLI_COMMAND (add_address_command, static) = {
- .path = "snat add address",
- .short_help = "snat add addresses <ip4-range-start> [- <ip4-range-end>] [del]",
- .function = add_address_command_fn,
-};
-
-static clib_error_t *
-snat_feature_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, *line_input = &_line_input;
- vnet_main_t * vnm = vnet_get_main();
- clib_error_t * error = 0;
- u32 sw_if_index;
- u32 * inside_sw_if_indices = 0;
- u32 * outside_sw_if_indices = 0;
- int is_del = 0;
- int i;
-
- sw_if_index = ~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, "in %U", unformat_vnet_sw_interface,
- vnm, &sw_if_index))
- vec_add1 (inside_sw_if_indices, sw_if_index);
- else if (unformat (line_input, "out %U", unformat_vnet_sw_interface,
- vnm, &sw_if_index))
- vec_add1 (outside_sw_if_indices, sw_if_index);
- else if (unformat (line_input, "del"))
- is_del = 1;
- else
- return clib_error_return (0, "unknown input '%U'",
- format_unformat_error, input);
- }
- unformat_free (line_input);
-
- if (vec_len (inside_sw_if_indices))
- {
- for (i = 0; i < vec_len(inside_sw_if_indices); i++)
- {
- sw_if_index = inside_sw_if_indices[i];
- snat_interface_add_del (sw_if_index, 1, is_del);
- }
- }
-
- if (vec_len (outside_sw_if_indices))
- {
- for (i = 0; i < vec_len(outside_sw_if_indices); i++)
- {
- sw_if_index = outside_sw_if_indices[i];
- snat_interface_add_del (sw_if_index, 0, is_del);
- }
- }
-
- vec_free (inside_sw_if_indices);
- vec_free (outside_sw_if_indices);
-
- return error;
-}
-
-VLIB_CLI_COMMAND (set_interface_snat_command, static) = {
- .path = "set interface snat",
- .function = snat_feature_command_fn,
- .short_help = "set interface snat in <intfc> out <intfc> [del]",
-};
-
-static clib_error_t *
-add_static_mapping_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, *line_input = &_line_input;
- clib_error_t * error = 0;
- ip4_address_t l_addr, e_addr;
- u32 l_port = 0, e_port = 0, vrf_id = ~0;
- int is_add = 1;
- int addr_only = 1;
- 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, "local %U %u", unformat_ip4_address, &l_addr,
- &l_port))
- addr_only = 0;
- else if (unformat (line_input, "local %U", unformat_ip4_address, &l_addr))
- ;
- else if (unformat (line_input, "external %U %u", unformat_ip4_address,
- &e_addr, &e_port))
- addr_only = 0;
- else if (unformat (line_input, "external %U", unformat_ip4_address,
- &e_addr))
- ;
- else if (unformat (line_input, "vrf %u", &vrf_id))
- ;
- else if (unformat (line_input, "del"))
- is_add = 0;
- else
- return clib_error_return (0, "unknown input: '%U'",
- format_unformat_error, line_input);
- }
- unformat_free (line_input);
-
- rv = snat_add_static_mapping(l_addr, e_addr, (u16) l_port, (u16) e_port,
- vrf_id, addr_only, is_add);
-
- switch (rv)
- {
- case VNET_API_ERROR_INVALID_VALUE:
- return clib_error_return (0, "External port already in use.");
- break;
- case VNET_API_ERROR_NO_SUCH_ENTRY:
- if (is_add)
- return clib_error_return (0, "External addres must be allocated.");
- else
- return clib_error_return (0, "Mapping not exist.");
- break;
- case VNET_API_ERROR_NO_SUCH_FIB:
- return clib_error_return (0, "No such VRF id.");
- case VNET_API_ERROR_VALUE_EXIST:
- return clib_error_return (0, "Mapping already exist.");
- default:
- break;
- }
-
- return error;
-}
-
-/*?
- * @cliexpar
- * @cliexstart{snat add static mapping}
- * Static mapping allows hosts on the external network to initiate connection
- * to to the local network host.
- * To create static mapping between local host address 10.0.0.3 port 6303 and
- * external address 4.4.4.4 port 3606 use:
- * vpp# snat add static mapping local 10.0.0.3 6303 external 4.4.4.4 3606
- * If not runnig "static mapping only" S-NAT plugin mode use before:
- * vpp# snat add address 4.4.4.4
- * To create static mapping between local and external address use:
- * vpp# snat add static mapping local 10.0.0.3 external 4.4.4.4
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (add_static_mapping_command, static) = {
- .path = "snat add static mapping",
- .function = add_static_mapping_command_fn,
- .short_help =
- "snat add static mapping local <addr> [<port>] external <addr> [<port>] [vrf <table-id>] [del]",
-};
-
-static clib_error_t *
-set_workers_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, *line_input = &_line_input;
- uword *bitmap = 0;
- int rv = 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, "%U", unformat_bitmap_list, &bitmap))
- ;
- else
- return clib_error_return (0, "unknown input '%U'",
- format_unformat_error, input);
- }
- unformat_free (line_input);
-
- if (bitmap == 0)
- return clib_error_return (0, "List of workers must be specified.");
-
- rv = snat_set_workers(bitmap);
-
- clib_bitmap_free (bitmap);
-
- switch (rv)
- {
- case VNET_API_ERROR_INVALID_WORKER:
- return clib_error_return (0, "Invalid worker(s).");
- break;
- case VNET_API_ERROR_FEATURE_DISABLED:
- return clib_error_return (0,
- "Supported only if 2 or more workes available.");
- break;
- default:
- break;
- }
-
- return 0;
-}
-
-/*?
- * @cliexpar
- * @cliexstart{set snat workers}
- * Set SNAT workers if 2 or more workers available, use:
- * vpp# set snat workers 0-2,5
- * @cliexend
-?*/
-VLIB_CLI_COMMAND (set_workers_command, static) = {
- .path = "set snat workers",
- .function = set_workers_command_fn,
- .short_help =
- "set snat workers <workers-list>",
-};
-
-static clib_error_t *
-snat_config (vlib_main_t * vm, unformat_input_t * input)
-{
- snat_main_t * sm = &snat_main;
- u32 translation_buckets = 1024;
- u32 translation_memory_size = 128<<20;
- u32 user_buckets = 128;
- u32 user_memory_size = 64<<20;
- u32 max_translations_per_user = 100;
- u32 outside_vrf_id = 0;
- u32 inside_vrf_id = 0;
- u32 static_mapping_buckets = 1024;
- u32 static_mapping_memory_size = 64<<20;
- u8 static_mapping_only = 0;
- u8 static_mapping_connection_tracking = 0;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "translation hash buckets %d", &translation_buckets))
- ;
- else if (unformat (input, "translation hash memory %d",
- &translation_memory_size));
- else if (unformat (input, "user hash buckets %d", &user_buckets))
- ;
- else if (unformat (input, "user hash memory %d",
- &user_memory_size))
- ;
- else if (unformat (input, "max translations per user %d",
- &max_translations_per_user))
- ;
- else if (unformat (input, "outside VRF id %d",
- &outside_vrf_id))
- ;
- else if (unformat (input, "inside VRF id %d",
- &inside_vrf_id))
- ;
- else if (unformat (input, "static mapping only"))
- {
- static_mapping_only = 1;
- if (unformat (input, "connection tracking"))
- static_mapping_connection_tracking = 1;
- }
- else
- return clib_error_return (0, "unknown input '%U'",
- format_unformat_error, input);
- }
-
- /* for show commands, etc. */
- sm->translation_buckets = translation_buckets;
- sm->translation_memory_size = translation_memory_size;
- sm->user_buckets = user_buckets;
- sm->user_memory_size = user_memory_size;
- sm->max_translations_per_user = max_translations_per_user;
- sm->outside_vrf_id = outside_vrf_id;
- sm->outside_fib_index = ~0;
- sm->inside_vrf_id = inside_vrf_id;
- sm->inside_fib_index = ~0;
- sm->static_mapping_only = static_mapping_only;
- sm->static_mapping_connection_tracking = static_mapping_connection_tracking;
-
- if (!static_mapping_only ||
- (static_mapping_only && static_mapping_connection_tracking))
- {
- clib_bihash_init_8_8 (&sm->worker_by_in, "worker-by-in", user_buckets,
- user_memory_size);
-
- clib_bihash_init_8_8 (&sm->worker_by_out, "worker-by-out", user_buckets,
- user_memory_size);
-
- vec_validate (sm->per_thread_data, tm->n_vlib_mains - 1);
-
- clib_bihash_init_8_8 (&sm->in2out, "in2out", translation_buckets,
- translation_memory_size);
-
- clib_bihash_init_8_8 (&sm->out2in, "out2in", translation_buckets,
- translation_memory_size);
-
- clib_bihash_init_8_8 (&sm->user_hash, "users", user_buckets,
- user_memory_size);
- }
- clib_bihash_init_8_8 (&sm->static_mapping_by_local,
- "static_mapping_by_local", static_mapping_buckets,
- static_mapping_memory_size);
-
- clib_bihash_init_8_8 (&sm->static_mapping_by_external,
- "static_mapping_by_external", static_mapping_buckets,
- static_mapping_memory_size);
- return 0;
-}
-
-VLIB_CONFIG_FUNCTION (snat_config, "snat");
-
-u8 * format_snat_key (u8 * s, va_list * args)
-{
- snat_session_key_t * key = va_arg (*args, snat_session_key_t *);
- char * protocol_string = "unknown";
- static char *protocol_strings[] = {
- "UDP",
- "TCP",
- "ICMP",
- };
-
- if (key->protocol < ARRAY_LEN(protocol_strings))
- protocol_string = protocol_strings[key->protocol];
-
- s = format (s, "%U proto %s port %d fib %d",
- format_ip4_address, &key->addr, protocol_string,
- clib_net_to_host_u16 (key->port), key->fib_index);
- return s;
-}
-
-u8 * format_snat_session (u8 * s, va_list * args)
-{
- snat_main_t * sm __attribute__((unused)) = va_arg (*args, snat_main_t *);
- snat_session_t * sess = va_arg (*args, snat_session_t *);
-
- s = format (s, " i2o %U\n", format_snat_key, &sess->in2out);
- s = format (s, " o2i %U\n", format_snat_key, &sess->out2in);
- s = format (s, " last heard %.2f\n", sess->last_heard);
- s = format (s, " total pkts %d, total bytes %lld\n",
- sess->total_pkts, sess->total_bytes);
- if (snat_is_session_static (sess))
- s = format (s, " static translation\n");
- else
- s = format (s, " dynamic translation\n");
-
- return s;
-}
-
-u8 * format_snat_user (u8 * s, va_list * args)
-{
- snat_main_per_thread_data_t * sm = va_arg (*args, snat_main_per_thread_data_t *);
- snat_user_t * u = va_arg (*args, snat_user_t *);
- int verbose = va_arg (*args, int);
- dlist_elt_t * head, * elt;
- u32 elt_index, head_index;
- u32 session_index;
- snat_session_t * sess;
-
- s = format (s, "%U: %d dynamic translations, %d static translations\n",
- format_ip4_address, &u->addr, u->nsessions, u->nstaticsessions);
-
- if (verbose == 0)
- return s;
-
- if (u->nsessions || u->nstaticsessions)
- {
- head_index = u->sessions_per_user_list_head_index;
- head = pool_elt_at_index (sm->list_pool, head_index);
-
- elt_index = head->next;
- elt = pool_elt_at_index (sm->list_pool, elt_index);
- session_index = elt->value;
-
- while (session_index != ~0)
- {
- sess = pool_elt_at_index (sm->sessions, session_index);
-
- s = format (s, " %U\n", format_snat_session, sm, sess);
-
- elt_index = elt->next;
- elt = pool_elt_at_index (sm->list_pool, elt_index);
- session_index = elt->value;
- }
- }
-
- return s;
-}
-
-u8 * format_snat_static_mapping (u8 * s, va_list * args)
-{
- snat_static_mapping_t *m = va_arg (*args, snat_static_mapping_t *);
-
- if (m->addr_only)
- s = format (s, "local %U external %U vrf %d",
- format_ip4_address, &m->local_addr,
- format_ip4_address, &m->external_addr,
- m->vrf_id);
- else
- s = format (s, "local %U:%d external %U:%d vrf %d",
- format_ip4_address, &m->local_addr, m->local_port,
- format_ip4_address, &m->external_addr, m->external_port,
- m->vrf_id);
-
- return s;
-}
-
-static clib_error_t *
-show_snat_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- int verbose = 0;
- snat_main_t * sm = &snat_main;
- snat_user_t * u;
- snat_static_mapping_t *m;
- snat_interface_t *i;
- snat_address_t * ap;
- vnet_main_t *vnm = vnet_get_main();
- snat_main_per_thread_data_t *tsm;
- u32 users_num = 0, sessions_num = 0, *worker;
- uword j = 0;
-
- if (unformat (input, "detail"))
- verbose = 1;
- else if (unformat (input, "verbose"))
- verbose = 2;
-
- if (sm->static_mapping_only)
- {
- if (sm->static_mapping_connection_tracking)
- vlib_cli_output (vm, "SNAT mode: static mapping only connection "
- "tracking");
- else
- vlib_cli_output (vm, "SNAT mode: static mapping only");
- }
- else
- {
- vlib_cli_output (vm, "SNAT mode: dynamic translations enabled");
- }
-
- if (verbose > 0)
- {
- pool_foreach (i, sm->interfaces,
- ({
- vlib_cli_output (vm, "%U %s", format_vnet_sw_interface_name, vnm,
- vnet_get_sw_interface (vnm, i->sw_if_index),
- i->is_inside ? "in" : "out");
- }));
-
- vec_foreach (ap, sm->addresses)
- {
- u8 * s = format (0, "");
- vlib_cli_output (vm, "%U", format_ip4_address, &ap->addr);
- clib_bitmap_foreach (j, ap->busy_port_bitmap,
- ({
- s = format (s, " %d", j);
- }));
- vlib_cli_output (vm, " %d busy ports:%v", ap->busy_ports, s);
- }
- }
-
- if (sm->num_workers > 1)
- {
- vlib_cli_output (vm, "%d workers", vec_len (sm->workers));
- if (verbose > 0)
- {
- vec_foreach (worker, sm->workers)
- {
- vlib_worker_thread_t *w =
- vlib_worker_threads + *worker + sm->first_worker_index;
- vlib_cli_output (vm, " %v", w->name);
- }
- }
- }
-
- if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
- {
- vlib_cli_output (vm, "%d static mappings",
- pool_elts (sm->static_mappings));
-
- if (verbose > 0)
- {
- pool_foreach (m, sm->static_mappings,
- ({
- vlib_cli_output (vm, "%U", format_snat_static_mapping, m);
- }));
- }
- }
- else
- {
- vec_foreach (tsm, sm->per_thread_data)
- {
- users_num += pool_elts (tsm->users);
- sessions_num += pool_elts (tsm->sessions);
- }
-
- vlib_cli_output (vm, "%d users, %d outside addresses, %d active sessions,"
- " %d static mappings",
- users_num,
- vec_len (sm->addresses),
- sessions_num,
- pool_elts (sm->static_mappings));
-
- if (verbose > 0)
- {
- vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->in2out,
- verbose - 1);
- vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->out2in,
- verbose - 1);
- vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->worker_by_in,
- verbose - 1);
- vlib_cli_output (vm, "%U", format_bihash_8_8, &sm->worker_by_out,
- verbose - 1);
- vec_foreach_index (j, sm->per_thread_data)
- {
- tsm = vec_elt_at_index (sm->per_thread_data, j);
-
- if (pool_elts (tsm->users) == 0)
- continue;
-
- vlib_worker_thread_t *w = vlib_worker_threads + j;
- vlib_cli_output (vm, "Thread %d (%v at lcore %u):", j, w->name,
- w->lcore_id);
- vlib_cli_output (vm, " %d list pool elements",
- pool_elts (tsm->list_pool));
-
- pool_foreach (u, tsm->users,
- ({
- vlib_cli_output (vm, " %U", format_snat_user, tsm, u,
- verbose - 1);
- }));
- }
-
- if (pool_elts (sm->static_mappings))
- {
- vlib_cli_output (vm, "static mappings:");
- pool_foreach (m, sm->static_mappings,
- ({
- vlib_cli_output (vm, "%U", format_snat_static_mapping, m);
- }));
- }
- }
- }
-
- return 0;
-}
-
-VLIB_CLI_COMMAND (show_snat_command, static) = {
- .path = "show snat",
- .short_help = "show snat",
- .function = show_snat_command_fn,
-};