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-rw-r--r--src/vnet/ip/ip_container_proxy.c297
1 files changed, 297 insertions, 0 deletions
diff --git a/src/vnet/ip/ip_container_proxy.c b/src/vnet/ip/ip_container_proxy.c
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+/*
+ * Copyright (c) 2015 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.
+ */
+/*
+ * ip/ip_lookup.c: ip4/6 adjacency and lookup table management
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <vnet/ip/ip_container_proxy.h>
+#include <vnet/ip/format.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/dpo/l3_proxy_dpo.h>
+#include <vnet/dpo/load_balance.h>
+
+clib_error_t *
+vnet_ip_container_proxy_add_del (vnet_ip_container_proxy_args_t * args)
+{
+ u32 fib_index;
+
+ if (!vnet_sw_interface_is_api_valid (vnet_get_main (), args->sw_if_index))
+ return clib_error_return_code (0, VNET_API_ERROR_INVALID_INTERFACE, 0,
+ "invalid sw_if_index");
+
+ fib_index = fib_table_get_table_id_for_sw_if_index (args->prefix.fp_proto,
+ args->sw_if_index);
+ if (args->is_add)
+ {
+ dpo_id_t proxy_dpo = DPO_INVALID;
+ l3_proxy_dpo_add_or_lock (fib_proto_to_dpo (args->prefix.fp_proto),
+ args->sw_if_index, &proxy_dpo);
+ fib_table_entry_special_dpo_add (fib_index,
+ &args->prefix,
+ FIB_SOURCE_PROXY,
+ FIB_ENTRY_FLAG_EXCLUSIVE, &proxy_dpo);
+ dpo_reset (&proxy_dpo);
+ }
+ else
+ {
+ fib_table_entry_special_remove (fib_index, &args->prefix,
+ FIB_SOURCE_PROXY);
+ }
+ return 0;
+}
+
+u8
+ip_container_proxy_is_set (fib_prefix_t * pfx, u32 sw_if_index)
+{
+ u32 fib_index;
+ fib_node_index_t fei;
+ const dpo_id_t *dpo;
+ l3_proxy_dpo_t *l3p;
+ load_balance_t *lb0;
+
+ fib_index = fib_table_get_table_id_for_sw_if_index (pfx->fp_proto,
+ sw_if_index);
+ if (fib_index == ~0)
+ return 0;
+
+ fei = fib_table_lookup_exact_match (fib_index, pfx);
+ if (fei == FIB_NODE_INDEX_INVALID)
+ return 0;
+
+ dpo = fib_entry_contribute_ip_forwarding (fei);
+ lb0 = load_balance_get (dpo->dpoi_index);
+ dpo = load_balance_get_bucket_i (lb0, 0);
+ if (dpo->dpoi_type != DPO_L3_PROXY)
+ return 0;
+
+ l3p = l3_proxy_dpo_get (dpo->dpoi_index);
+ return (l3p->l3p_sw_if_index == sw_if_index);
+}
+
+typedef struct ip_container_proxy_walk_ctx_t_
+{
+ ip_container_proxy_cb_t cb;
+ void *ctx;
+} ip_container_proxy_walk_ctx_t;
+
+static fib_table_walk_rc_t
+ip_container_proxy_fib_table_walk (fib_node_index_t fei, void *arg)
+{
+ ip_container_proxy_walk_ctx_t *ctx = arg;
+ const fib_prefix_t *pfx;
+ const dpo_id_t *dpo;
+ load_balance_t *lb;
+ l3_proxy_dpo_t *l3p;
+
+ pfx = fib_entry_get_prefix (fei);
+ if (fib_entry_is_sourced (fei, FIB_SOURCE_PROXY))
+ {
+ dpo = fib_entry_contribute_ip_forwarding (fei);
+ lb = load_balance_get (dpo->dpoi_index);
+ dpo = load_balance_get_bucket_i (lb, 0);
+ l3p = l3_proxy_dpo_get (dpo->dpoi_index);
+ ctx->cb (pfx, l3p->l3p_sw_if_index, ctx->ctx);
+ }
+
+ return FIB_TABLE_WALK_CONTINUE;
+}
+
+void
+ip_container_proxy_walk (ip_container_proxy_cb_t cb, void *ctx)
+{
+ fib_table_t *fib_table;
+ ip_container_proxy_walk_ctx_t wctx = {
+ .cb = cb,
+ .ctx = ctx,
+ };
+
+ /* *INDENT-OFF* */
+ pool_foreach (fib_table, ip4_main.fibs,
+ ({
+ fib_table_walk(fib_table->ft_index,
+ FIB_PROTOCOL_IP4,
+ ip_container_proxy_fib_table_walk,
+ &wctx);
+ }));
+ pool_foreach (fib_table, ip6_main.fibs,
+ ({
+ fib_table_walk(fib_table->ft_index,
+ FIB_PROTOCOL_IP6,
+ ip_container_proxy_fib_table_walk,
+ &wctx);
+ }));
+ /* *INDENT-ON* */
+}
+
+clib_error_t *
+ip_container_cmd (vlib_main_t * vm,
+ unformat_input_t * main_input, vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ fib_prefix_t pfx;
+ u32 is_del, addr_set = 0;
+ vnet_main_t *vnm;
+ u32 sw_if_index;
+
+ vnm = vnet_get_main ();
+ is_del = 0;
+ sw_if_index = ~0;
+ clib_memset (&pfx, 0, sizeof (pfx));
+
+ /* Get a line of input. */
+ if (!unformat_user (main_input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "%U", unformat_ip4_address, &pfx.fp_addr.ip4))
+ {
+ pfx.fp_proto = FIB_PROTOCOL_IP4;
+ pfx.fp_len = 32;
+ addr_set = 1;
+ }
+ else if (unformat (line_input, "%U",
+ unformat_ip6_address, &pfx.fp_addr.ip6))
+ {
+ pfx.fp_proto = FIB_PROTOCOL_IP6;
+ pfx.fp_len = 128;
+ addr_set = 1;
+ }
+ else if (unformat (line_input, "%U",
+ unformat_vnet_sw_interface, vnm, &sw_if_index))
+ ;
+ else if (unformat (line_input, "del"))
+ is_del = 1;
+ else
+ {
+ unformat_free (line_input);
+ return (clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input));
+ }
+ }
+
+ if (~0 == sw_if_index || !addr_set)
+ {
+ unformat_free (line_input);
+ vlib_cli_output (vm, "interface and address must be set");
+ return 0;
+ }
+
+ vnet_ip_container_proxy_args_t args = {
+ .prefix = pfx,
+ .sw_if_index = sw_if_index,
+ .is_add = !is_del,
+ };
+ vnet_ip_container_proxy_add_del (&args);
+ unformat_free (line_input);
+ return (NULL);
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (ip_container_command_node, static) = {
+ .path = "ip container",
+ .function = ip_container_cmd,
+ .short_help = "ip container <address> <interface>",
+ .is_mp_safe = 1,
+};
+/* *INDENT-ON* */
+
+clib_error_t *
+show_ip_container_cmd_fn (vlib_main_t * vm, unformat_input_t * main_input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_main_t *vnm = vnet_get_main ();
+ fib_prefix_t pfx;
+ u32 sw_if_index = ~0;
+ u8 has_proxy;
+
+ if (!unformat_user (main_input, unformat_line_input, line_input))
+ return 0;
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "%U", unformat_ip4_address, &pfx.fp_addr.ip4))
+ {
+ pfx.fp_proto = FIB_PROTOCOL_IP4;
+ pfx.fp_len = 32;
+ }
+ else if (unformat (line_input, "%U",
+ unformat_ip6_address, &pfx.fp_addr.ip6))
+ {
+ pfx.fp_proto = FIB_PROTOCOL_IP6;
+ pfx.fp_len = 128;
+ }
+ else if (unformat (line_input, "%U",
+ unformat_vnet_sw_interface, vnm, &sw_if_index))
+ ;
+ else
+ {
+ unformat_free (line_input);
+ return (clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input));
+ }
+ }
+
+ if (~0 == sw_if_index)
+ {
+ unformat_free (line_input);
+ vlib_cli_output (vm, "no interface");
+ return (clib_error_return (0, "no interface"));
+ }
+
+ has_proxy = ip_container_proxy_is_set (&pfx, sw_if_index);
+ vlib_cli_output (vm, "ip container proxy is: %s", has_proxy ? "on" : "off");
+
+ unformat_free (line_input);
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_ip_container_command, static) = {
+ .path = "show ip container",
+ .function = show_ip_container_cmd_fn,
+ .short_help = "show ip container <address> <interface>",
+ .is_mp_safe = 1,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */