--- /dev/null
+/*
+ * 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.
+ */
+
+/**
+ * @file
+ * @brief Local TCP/IP stack punt infrastructure.
+ *
+ * Provides a set of VPP nodes togather with the relevant APIs and CLI
+ * commands in order to adjust and dispatch packets from the VPP data plane
+ * to the local TCP/IP stack
+ */
+#include <vlib/vlib.h>
+#include <vnet/pg/pg.h>
+#include <vnet/ip/udp.h>
+#include <vnet/ip/punt.h>
+
+#define foreach_punt_next \
+ _ (PUNT, "error-punt")
+
+typedef enum
+{
+#define _(s,n) PUNT_NEXT_##s,
+ foreach_punt_next
+#undef _
+ PUNT_N_NEXT,
+} punt_next_t;
+
+vlib_node_registration_t udp4_punt_node;
+vlib_node_registration_t udp6_punt_node;
+
+/** @brief IPv4/IPv6 UDP punt node main loop.
+
+ This is the main loop inline function for IPv4/IPv6 UDP punt
+ transition node.
+
+ @param vm vlib_main_t corresponding to the current thread
+ @param node vlib_node_runtime_t
+ @param frame vlib_frame_t whose contents should be dispatched
+ @param is_ipv4 indicates if called for IPv4 or IPv6 node
+*/
+always_inline uword
+udp46_punt_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, int is_ip4)
+{
+ u32 n_left_from, *from, *to_next;
+ word advance;
+
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+
+ /* udp[46]_lookup hands us the data payload, not the IP header */
+ if (is_ip4)
+ advance = -(sizeof (ip4_header_t) + sizeof (udp_header_t));
+ else
+ advance = -(sizeof (ip6_header_t) + sizeof (udp_header_t));
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, PUNT_NEXT_PUNT, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ vlib_buffer_advance (b0, advance);
+ b0->error = node->errors[PUNT_ERROR_UDP_PORT];
+ }
+
+ vlib_put_next_frame (vm, node, PUNT_NEXT_PUNT, n_left_to_next);
+ }
+
+ return from_frame->n_vectors;
+}
+
+static char *punt_error_strings[] = {
+#define punt_error(n,s) s,
+#include "punt_error.def"
+#undef punt_error
+};
+
+/** @brief IPv4 UDP punt node.
+ @node ip4-udp-punt
+
+ This is the IPv4 UDP punt transition node. It is registered as a next
+ node for the "ip4-udp-lookup" handling UDP port(s) requested for punt.
+ The buffer's current data pointer is adjusted to the original packet
+ IPv4 header. All buffers are dispatched to "error-punt".
+
+ @param vm vlib_main_t corresponding to the current thread
+ @param node vlib_node_runtime_t
+ @param frame vlib_frame_t whose contents should be dispatched
+
+ @par Graph mechanics: next index usage
+
+ @em Sets:
+ - <code>vnet_buffer(b)->current_data</code>
+ - <code>vnet_buffer(b)->current_len</code>
+
+ <em>Next Index:</em>
+ - Dispatches the packet to the "error-punt" node
+*/
+static uword
+udp4_punt (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ return udp46_punt_inline (vm, node, from_frame, 1 /* is_ip4 */ );
+}
+
+/** @brief IPv6 UDP punt node.
+ @node ip6-udp-punt
+
+ This is the IPv6 UDP punt transition node. It is registered as a next
+ node for the "ip6-udp-lookup" handling UDP port(s) requested for punt.
+ The buffer's current data pointer is adjusted to the original packet
+ IPv6 header. All buffers are dispatched to "error-punt".
+
+ @param vm vlib_main_t corresponding to the current thread
+ @param node vlib_node_runtime_t
+ @param frame vlib_frame_t whose contents should be dispatched
+
+ @par Graph mechanics: next index usage
+
+ @em Sets:
+ - <code>vnet_buffer(b)->current_data</code>
+ - <code>vnet_buffer(b)->current_len</code>
+
+ <em>Next Index:</em>
+ - Dispatches the packet to the "error-punt" node
+*/
+static uword
+udp6_punt (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ return udp46_punt_inline (vm, node, from_frame, 0 /* is_ip4 */ );
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (udp4_punt_node) = {
+ .function = udp4_punt,
+ .name = "ip4-udp-punt",
+ /* Takes a vector of packets. */
+ .vector_size = sizeof (u32),
+
+ .n_errors = PUNT_N_ERROR,
+ .error_strings = punt_error_strings,
+
+ .n_next_nodes = PUNT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [PUNT_NEXT_##s] = n,
+ foreach_punt_next
+#undef _
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (udp4_punt_node, udp4_punt)
+
+VLIB_REGISTER_NODE (udp6_punt_node) = {
+ .function = udp6_punt,
+ .name = "ip6-udp-punt",
+ /* Takes a vector of packets. */
+ .vector_size = sizeof (u32),
+
+ .n_errors = PUNT_N_ERROR,
+ .error_strings = punt_error_strings,
+
+ .n_next_nodes = PUNT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [PUNT_NEXT_##s] = n,
+ foreach_punt_next
+#undef _
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (udp6_punt_node, udp6_punt)
+/* *INDENT-ON* */
+
+/**
+ * @brief Request IP traffic punt to the local TCP/IP stack.
+ *
+ * @em Note
+ * - UDP is the only protocol supported in the current implementation
+ * - When requesting UDP punt port number(s) must be specified
+ * - All TCP traffic is currently punted to the host by default
+ *
+ * @param vm vlib_main_t corresponding to the current thread
+ * @param ipv IP protcol version.
+ * 4 - IPv4, 6 - IPv6, ~0 for both IPv6 and IPv4
+ * @param protocol 8-bits L4 protocol value
+ * Only value of 17 (UDP) is currently supported
+ * @param port 16-bits L4 (TCP/IP) port number when applicable
+ *
+ * @returns 0 on success, non-zero value otherwise
+ */
+clib_error_t *
+vnet_punt_add_del (vlib_main_t * vm, u8 ipv, u8 protocol, u16 port,
+ int is_add)
+{
+ /* For now we only support adding specific UDP port punt */
+ {
+ if (!is_add)
+ return clib_error_return (0, "punt delete is not supported yet");
+
+ if (protocol != IP_PROTOCOL_UDP)
+ return clib_error_return (0,
+ "only UDP protocol (%d) is supported, got %d",
+ IP_PROTOCOL_UDP, protocol);
+
+ if (port == (u16) ~ 0)
+ return clib_error_return (0, "TCP/UDP port must be specified");
+ }
+
+ if (ipv != (u8) ~ 0)
+ {
+ if (ipv == 4)
+ udp_register_dst_port (vm, port, udp4_punt_node.index, 1);
+ else if (ipv == 6)
+ udp_register_dst_port (vm, port, udp6_punt_node.index, 0);
+ else
+ return clib_error_return (0, "IP version must be 4 or 6, got %d",
+ ipv);
+ }
+ else
+ {
+ udp_register_dst_port (vm, port, udp4_punt_node.index, 1);
+ udp_register_dst_port (vm, port, udp6_punt_node.index, 0);
+ }
+
+ return 0;
+
+}
+
+static clib_error_t *
+udp_punt_cli (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ u32 udp_port;
+ int is_add = 1;
+ clib_error_t *error;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "del"))
+ is_add = 0;
+ else if (unformat (input, "%d", &udp_port))
+ {
+ /* punt both IPv6 and IPv4 when used in CLI */
+ error = vnet_punt_add_del (vm, ~0, IP_PROTOCOL_UDP,
+ udp_port, is_add);
+ if (error)
+ clib_error_report (error);
+ }
+ }
+
+ return 0;
+}
+
+/*?
+ * The set of '<em>set punt</em>' commands allows specific IP traffic to
+ * be punted to the host TCP/IP stack
+ *
+ * @em Note
+ * - UDP is the only protocol supported in the current implementation
+ * - When requesting UDP punt port number(s) must be specified
+ * - All TCP traffic is currently punted to the host by default
+ *
+ * @cliexpar
+ * @parblock
+ * Example of how to request NTP traffic to be punted
+ * @cliexcmd{set punt udp 125}
+ *
+ * @endparblock
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (punt_udp_command, static) = {
+ .path = "set punt udp",
+ .short_help = "set punt udp [del] port-num1 [port-num2 ...]",
+ .function = udp_punt_cli,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
*------------------------------------------------------------------
* api_format.c
*
- * Copyright (c) 2014 Cisco and/or its affiliates.
+ * Copyright (c) 2014-2016 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:
_(ip_source_and_port_range_check_add_del_reply) \
_(ip_source_and_port_range_check_interface_add_del_reply)\
_(delete_subif_reply) \
-_(l2_interface_pbb_tag_rewrite_reply)
+_(l2_interface_pbb_tag_rewrite_reply) \
+_(punt_reply)
#define _(n) \
static void vl_api_##n##_t_handler \
_(IPSEC_GRE_ADD_DEL_TUNNEL_REPLY, ipsec_gre_add_del_tunnel_reply) \
_(IPSEC_GRE_TUNNEL_DETAILS, ipsec_gre_tunnel_details) \
_(DELETE_SUBIF_REPLY, delete_subif_reply) \
-_(L2_INTERFACE_PBB_TAG_REWRITE_REPLY, l2_interface_pbb_tag_rewrite_reply)
+_(L2_INTERFACE_PBB_TAG_REWRITE_REPLY, l2_interface_pbb_tag_rewrite_reply) \
+_(PUNT_REPLY, punt_reply)
/* M: construct, but don't yet send a message */
return 0;
}
+static int
+api_punt (vat_main_t * vam)
+{
+ unformat_input_t *i = vam->input;
+ vl_api_punt_t *mp;
+ f64 timeout;
+ u32 ipv = ~0;
+ u32 protocol = ~0;
+ u32 port = ~0;
+ int is_add = 1;
+
+ while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (i, "ip %d", &ipv))
+ ;
+ else if (unformat (i, "protocol %d", &protocol))
+ ;
+ else if (unformat (i, "port %d", &port))
+ ;
+ else if (unformat (i, "del"))
+ is_add = 0;
+ else
+ {
+ clib_warning ("parse error '%U'", format_unformat_error, i);
+ return -99;
+ }
+ }
+
+ M (PUNT, punt);
+
+ mp->is_add = (u8) is_add;
+ mp->ipv = (u8) ipv;
+ mp->l4_protocol = (u8) protocol;
+ mp->l4_port = htons ((u16) port);
+
+ S;
+ W;
+ /* NOTREACHED */
+ return 0;
+}
+
static void vl_api_ipsec_gre_tunnel_details_t_handler
(vl_api_ipsec_gre_tunnel_details_t * mp)
{
_(delete_subif,"sub_sw_if_index <nn> sub_if_id <nn>") \
_(l2_interface_pbb_tag_rewrite, \
"<intfc> | sw_if_index <nn> \n" \
- "[disable | push | pop | translate_pbb_stag <outer_tag>] \n" \
- "dmac <mac> smac <mac> sid <nn> [vlanid <nn>]")
+ "[disable | push | pop | translate_pbb_stag <outer_tag>] \n" \
+ "dmac <mac> smac <mac> sid <nn> [vlanid <nn>]") \
+_(punt, "protocol <l4-protocol> [ip <ver>] [port <l4-port>] [del]")
/* List of command functions, CLI names map directly to functions */
#define foreach_cli_function \
Code Review / vpp.git / commitdiff