diff options
Diffstat (limited to 'src/vnet/span')
| -rw-r--r-- | src/vnet/span/node.c | 286 | ||||
| -rw-r--r-- | src/vnet/span/span.api | 60 | ||||
| -rw-r--r-- | src/vnet/span/span.c | 197 | ||||
| -rw-r--r-- | src/vnet/span/span.h | 62 | ||||
| -rw-r--r-- | src/vnet/span/span.md | 65 | ||||
| -rw-r--r-- | src/vnet/span/span_api.c | 153 |
6 files changed, 823 insertions, 0 deletions
diff --git a/src/vnet/span/node.c b/src/vnet/span/node.c new file mode 100644 index 00000000000..50d642c2f8b --- /dev/null +++ b/src/vnet/span/node.c @@ -0,0 +1,286 @@ +/* + * 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 <vlib/vlib.h> +#include <vnet/vnet.h> +#include <vppinfra/error.h> + +#include <vnet/span/span.h> + +#include <vppinfra/error.h> +#include <vppinfra/elog.h> + +vlib_node_registration_t span_node; + +/* packet trace format function */ +u8 * +format_span_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 *); + span_trace_t *t = va_arg (*args, span_trace_t *); + + vnet_main_t *vnm = &vnet_main; + s = format (s, "SPAN: mirrored %U -> %U", + format_vnet_sw_if_index_name, vnm, t->src_sw_if_index, + format_vnet_sw_if_index_name, vnm, t->mirror_sw_if_index); + + return s; +} + +#define foreach_span_error \ +_(HITS, "SPAN incomming packets processed") + +typedef enum +{ +#define _(sym,str) SPAN_ERROR_##sym, + foreach_span_error +#undef _ + SPAN_N_ERROR, +} span_error_t; + +static char *span_error_strings[] = { +#define _(sym,string) string, + foreach_span_error +#undef _ +}; + +static_always_inline void +span_mirror (vlib_main_t * vm, span_interface_t * si0, vlib_buffer_t * b0, + vlib_frame_t ** mirror_frames, int is_rx) +{ + vlib_buffer_t *c0; + vnet_main_t *vnm = &vnet_main; + u32 *to_mirror_next = 0; + u32 i; + + if (is_rx != 0 && si0->num_rx_mirror_ports == 0) + return; + + if (is_rx == 0 && si0->num_tx_mirror_ports == 0) + return; + + /* Don't do it again */ + if (PREDICT_FALSE (b0->flags & VNET_BUFFER_SPAN_CLONE)) + return; + + /* *INDENT-OFF* */ + clib_bitmap_foreach (i, is_rx ? si0->rx_mirror_ports : si0->tx_mirror_ports, ( + { + if (mirror_frames[i] == 0) + mirror_frames[i] = vnet_get_frame_to_sw_interface (vnm, i); + to_mirror_next = vlib_frame_vector_args (mirror_frames[i]); + to_mirror_next += mirror_frames[i]->n_vectors; + c0 = vlib_buffer_copy (vm, b0); + vnet_buffer (c0)->sw_if_index[VLIB_TX] = i; + c0->flags |= VNET_BUFFER_SPAN_CLONE; + to_mirror_next[0] = vlib_get_buffer_index (vm, c0); + mirror_frames[i]->n_vectors++; + })); + /* *INDENT-ON* */ +} + +static_always_inline uword +span_node_inline_fn (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame, int is_rx) +{ + span_main_t *sm = &span_main; + vnet_main_t *vnm = &vnet_main; + u32 n_left_from, *from, *to_next; + u32 n_span_packets = 0; + u32 next_index; + u32 sw_if_index; + static __thread vlib_frame_t **mirror_frames = 0; + vlib_rx_or_tx_t rxtx = is_rx ? VLIB_RX : VLIB_TX; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + vec_validate_aligned (mirror_frames, sm->max_sw_if_index, + CLIB_CACHE_LINE_BYTES); + + 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; + u32 bi1; + vlib_buffer_t *b0; + vlib_buffer_t *b1; + span_interface_t *si0, *si1; + u32 sw_if_index0; + u32 next0 = 0; + u32 sw_if_index1; + u32 next1 = 0; + + /* speculatively enqueue b0, b1 to the current next frame */ + to_next[0] = bi0 = from[0]; + to_next[1] = bi1 = from[1]; + to_next += 2; + n_left_to_next -= 2; + from += 2; + n_left_from -= 2; + + b0 = vlib_get_buffer (vm, bi0); + b1 = vlib_get_buffer (vm, bi1); + sw_if_index0 = vnet_buffer (b0)->sw_if_index[rxtx]; + sw_if_index1 = vnet_buffer (b1)->sw_if_index[rxtx]; + si0 = vec_elt_at_index (sm->interfaces, sw_if_index0); + si1 = vec_elt_at_index (sm->interfaces, sw_if_index1); + + span_mirror (vm, si0, b0, mirror_frames, is_rx); + span_mirror (vm, si1, b1, mirror_frames, is_rx); + + vnet_feature_next (sw_if_index0, &next0, b0); + vnet_feature_next (sw_if_index1, &next1, b1); + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + span_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); + t->src_sw_if_index = sw_if_index0; + //t->mirror_sw_if_index = si0->mirror_sw_if_index; + } + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + span_trace_t *t = vlib_add_trace (vm, node, b1, sizeof (*t)); + t->src_sw_if_index = sw_if_index1; + //t->mirror_sw_if_index = si1->mirror_sw_if_index; + } + /* verify speculative enqueue, maybe switch current next frame */ + 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; + vlib_buffer_t *b0; + span_interface_t *si0; + u32 sw_if_index0; + u32 next0 = 0; + + /* speculatively enqueue b0 to the current next frame */ + to_next[0] = bi0 = from[0]; + to_next += 1; + n_left_to_next -= 1; + from += 1; + n_left_from -= 1; + + b0 = vlib_get_buffer (vm, bi0); + sw_if_index0 = vnet_buffer (b0)->sw_if_index[rxtx]; + si0 = vec_elt_at_index (sm->interfaces, sw_if_index0); + span_mirror (vm, si0, b0, mirror_frames, is_rx); + + vnet_feature_next (sw_if_index0, &next0, b0); + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + span_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); + t->src_sw_if_index = sw_if_index0; + } + /* verify speculative enqueue, maybe switch current next frame */ + 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); + } + + + for (sw_if_index = 0; sw_if_index < vec_len (mirror_frames); sw_if_index++) + { + if (mirror_frames[sw_if_index] == 0) + continue; + + vnet_put_frame_to_sw_interface (vnm, sw_if_index, + mirror_frames[sw_if_index]); + mirror_frames[sw_if_index] = 0; + } + vlib_node_increment_counter (vm, span_node.index, SPAN_ERROR_HITS, + n_span_packets); + + return frame->n_vectors; +} + +static uword +span_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return span_node_inline_fn (vm, node, frame, 1); +} + +static uword +span_output_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return span_node_inline_fn (vm, node, frame, 0); +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (span_input_node) = { + .function = span_input_node_fn, + .name = "span-input", + .vector_size = sizeof (u32), + .format_trace = format_span_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(span_error_strings), + .error_strings = span_error_strings, + + .n_next_nodes = 0, + + /* edit / add dispositions here */ + .next_nodes = { + [0] = "error-drop", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (span_input_node, span_input_node_fn) + +VLIB_REGISTER_NODE (span_output_node) = { + .function = span_output_node_fn, + .name = "span-output", + .vector_size = sizeof (u32), + .format_trace = format_span_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(span_error_strings), + .error_strings = span_error_strings, + + .n_next_nodes = 0, + + /* edit / add dispositions here */ + .next_nodes = { + [0] = "error-drop", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (span_output_node, span_output_node_fn) + +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/span/span.api b/src/vnet/span/span.api new file mode 100644 index 00000000000..4babdd834ee --- /dev/null +++ b/src/vnet/span/span.api @@ -0,0 +1,60 @@ +/* Hey Emacs use -*- mode: C -*- */ +/* + * 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. + */ + + /** \brief Enable/Disable span to mirror traffic from one interface to another + @param client_index - opaque cookie to identify the sender + @param context - sender context which was passed in the request + @param sw_if_index_from - interface to be mirorred + @param sw_if_index_to - interface where the traffic is mirrored + @param state - 0 = disabled, 1 = rx enabled, 2 = tx enabled, 3 tx & rx enabled +*/ +define sw_interface_span_enable_disable { + u32 client_index; + u32 context; + u32 sw_if_index_from; + u32 sw_if_index_to; + u8 state; +}; + +/** \brief Reply to SPAN enable/disable request + @param context - sender context which was passed in the request +*/ +define sw_interface_span_enable_disable_reply { + u32 context; + i32 retval; +}; + +/** \brief SPAN dump request + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request +*/ +define sw_interface_span_dump { + u32 client_index; + u32 context; +}; + +/** \brief Reply to SPAN dump request + @param context - sender context which was passed in the request + @param sw_if_index_from - mirorred interface + @param sw_if_index_to - interface where the traffic is mirrored + @param state - 0 = disabled, 1 = rx enabled, 2 = tx enabled, 3 tx & rx enabled +*/ +define sw_interface_span_details { + u32 context; + u32 sw_if_index_from; + u32 sw_if_index_to; + u8 state; +}; diff --git a/src/vnet/span/span.c b/src/vnet/span/span.c new file mode 100644 index 00000000000..7b5816c79f2 --- /dev/null +++ b/src/vnet/span/span.c @@ -0,0 +1,197 @@ +/* + * 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 <vlib/vlib.h> +#include <vppinfra/error.h> +#include <vnet/feature/feature.h> + +#include <vnet/span/span.h> + +int +span_add_delete_entry (vlib_main_t * vm, + u32 src_sw_if_index, u32 dst_sw_if_index, u8 state) +{ + span_main_t *sm = &span_main; + span_interface_t *si; + u32 new_num_rx_mirror_ports, new_num_tx_mirror_ports; + + if (state > 3) + return VNET_API_ERROR_UNIMPLEMENTED; + + if ((src_sw_if_index == ~0) || (dst_sw_if_index == ~0 && state > 0) + || (src_sw_if_index == dst_sw_if_index)) + return VNET_API_ERROR_INVALID_INTERFACE; + + vnet_sw_interface_t *sw_if; + + sw_if = vnet_get_sw_interface (vnet_get_main (), src_sw_if_index); + if (sw_if->type == VNET_SW_INTERFACE_TYPE_SUB) + return VNET_API_ERROR_UNIMPLEMENTED; + + vec_validate_aligned (sm->interfaces, src_sw_if_index, + CLIB_CACHE_LINE_BYTES); + si = vec_elt_at_index (sm->interfaces, src_sw_if_index); + + si->rx_mirror_ports = clib_bitmap_set (si->rx_mirror_ports, dst_sw_if_index, + (state & 1) != 0); + si->tx_mirror_ports = clib_bitmap_set (si->tx_mirror_ports, dst_sw_if_index, + (state & 2) != 0); + + new_num_rx_mirror_ports = clib_bitmap_count_set_bits (si->rx_mirror_ports); + new_num_tx_mirror_ports = clib_bitmap_count_set_bits (si->tx_mirror_ports); + + if (new_num_rx_mirror_ports == 1 && si->num_rx_mirror_ports == 0) + vnet_feature_enable_disable ("device-input", "span-input", + src_sw_if_index, 1, 0, 0); + + if (new_num_rx_mirror_ports == 0 && si->num_rx_mirror_ports == 1) + vnet_feature_enable_disable ("device-input", "span-input", + src_sw_if_index, 0, 0, 0); + + if (new_num_rx_mirror_ports == 1 && si->num_rx_mirror_ports == 0) + vnet_feature_enable_disable ("device-input", "span-output", + src_sw_if_index, 1, 0, 0); + + if (new_num_rx_mirror_ports == 0 && si->num_rx_mirror_ports == 1) + vnet_feature_enable_disable ("device-input", "span-output", + src_sw_if_index, 0, 0, 0); + + si->num_rx_mirror_ports = new_num_rx_mirror_ports; + si->num_tx_mirror_ports = new_num_tx_mirror_ports; + + if (dst_sw_if_index > sm->max_sw_if_index) + sm->max_sw_if_index = dst_sw_if_index; + + return 0; +} + +static clib_error_t * +set_interface_span_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + span_main_t *sm = &span_main; + u32 src_sw_if_index = ~0; + u32 dst_sw_if_index = ~0; + u8 state = 3; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "%U", unformat_vnet_sw_interface, + sm->vnet_main, &src_sw_if_index)) + ; + else if (unformat (input, "destination %U", unformat_vnet_sw_interface, + sm->vnet_main, &dst_sw_if_index)) + ; + else if (unformat (input, "disable")) + state = 0; + else if (unformat (input, "rx")) + state = 1; + else if (unformat (input, "tx")) + state = 2; + else if (unformat (input, "both")) + state = 3; + else + break; + } + + int rv = + span_add_delete_entry (vm, src_sw_if_index, dst_sw_if_index, state); + if (rv == VNET_API_ERROR_INVALID_INTERFACE) + return clib_error_return (0, "Invalid interface"); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (set_interface_span_command, static) = { + .path = "set interface span", + .short_help = "set interface span <if-name> [disable | destination <if-name> [both|rx|tx]]", + .function = set_interface_span_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +show_interfaces_span_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + span_main_t *sm = &span_main; + span_interface_t *si; + vnet_main_t *vnm = &vnet_main; + u8 header = 1; + char *states[] = { "none", "rx", "tx", "both" }; + u8 *s = 0; + + /* *INDENT-OFF* */ + vec_foreach (si, sm->interfaces) + if (si->num_rx_mirror_ports || si->num_tx_mirror_ports) + { + clib_bitmap_t *b; + u32 i; + b = clib_bitmap_dup_or (si->rx_mirror_ports, si->tx_mirror_ports); + if (header) + { + vlib_cli_output (vm, "%-40s %s", "Source interface", + "Mirror interface (direction)"); + header = 0; + } + s = format (s, "%U", format_vnet_sw_if_index_name, vnm, + si - sm->interfaces); + clib_bitmap_foreach (i, b, ( + { + int state; + state = (clib_bitmap_get (si->rx_mirror_ports, i) + + clib_bitmap_get (si->tx_mirror_ports, i) * 2); + + vlib_cli_output (vm, "%-40v %U (%s)", s, + format_vnet_sw_if_index_name, vnm, i, + states[state]); + vec_reset_length (s); + })); + clib_bitmap_free (b); + } + /* *INDENT-ON* */ + vec_free (s); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (show_interfaces_span_command, static) = { + .path = "show interfaces span", + .short_help = "Shows SPAN mirror table", + .function = show_interfaces_span_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +span_init (vlib_main_t * vm) +{ + span_main_t *sm = &span_main; + + sm->vlib_main = vm; + sm->vnet_main = vnet_get_main (); + + return 0; +} + +VLIB_INIT_FUNCTION (span_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/span/span.h b/src/vnet/span/span.h new file mode 100644 index 00000000000..a98b010bf61 --- /dev/null +++ b/src/vnet/span/span.h @@ -0,0 +1,62 @@ +/* + * 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. + */ + +#ifndef __span_h__ +#define __span_h__ + +#include <vnet/vnet.h> +#include <vnet/ip/ip.h> + +typedef struct +{ + clib_bitmap_t *rx_mirror_ports; + clib_bitmap_t *tx_mirror_ports; + u32 num_rx_mirror_ports; + u32 num_tx_mirror_ports; +} span_interface_t; + +typedef struct +{ + /* per-interface vector of span instances */ + span_interface_t *interfaces; + + /* biggest sw_if_index used so far */ + u32 max_sw_if_index; + + /* convenience */ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; +} span_main_t; + +span_main_t span_main; + +typedef struct +{ + u32 src_sw_if_index; /* mirrored interface index */ + u32 mirror_sw_if_index; /* output interface index */ +} span_trace_t; + +#endif /* __span_h__ */ + +int +span_add_delete_entry (vlib_main_t * vm, u32 src_sw_if_index, + u32 dst_sw_if_index, u8 is_add); +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/span/span.md b/src/vnet/span/span.md new file mode 100644 index 00000000000..ee3f814f5c3 --- /dev/null +++ b/src/vnet/span/span.md @@ -0,0 +1,65 @@ +# VPP SPAN implementation + +This is a memo intended to contain documentation of the VPP SPAN implementation. +Everything that is not directly obvious should come here. + + +## Switched Port Analyzer (SPAN) +Port mirroring is used on a network switch to send a copy of network packets seen on one switch port to a network monitoring connection on another switch port. +Can be used by network engineers or administrators to measure performnce, analyze and debug data or diagnose errors on a network. + +### RX traffic node +There is one static node to mirror incomming packets. +* span-input: Creates a copy of incomming buffer due to incomming buffers can be reused internally. + +Chaining: dpdk-input -> span-input -> +* original buffer is sent to ethernet-input for processing +* buffer copy is sent to interface-output + +### Configuration +SPAN supports the following CLI configuration commands: + +#### Enable/Disable SPAN (CLI) + set interface span <if-name> [disable | destination <if-name>] + +<if-name>: mirrored interface name +destination <if-name>: monitoring interface name +disable: delete mirroring + +#### Enable/Disabl SPAN (API) +SPAN supports the following API configuration command: + sw_interface_span_enable_disable src GigabitEthernet0/8/0 dst GigabitEthernet0/9/0 + sw_interface_span_enable_disable src_sw_if_index 1 dst_sw_if_index 2 + +src/src_sw_if_index: mirrored interface name +dst/dst_sw_if_index: monitoring interface name + +#### Remove SPAN entry (API) +SPAN supports the following API configuration command: + sw_interface_span_enable_disable src_sw_if_index 1 dst_sw_if_index 2 disable + +src_sw_if_index: mirrored interface name +dst_sw_if_index: monitoring interface name + +### Configuration example + +Mirror all packets on interface GigabitEthernet0/10/0 to interface GigabitEthernet0/11/0. + +Configure IPv4 addresses on mirrored interface: +set interface ip address GigabitEthernet0/10/0 192.168.1.13/24 +set interface state GigabitEthernet0/10/0 up + +Configure IPv4 addresses on monitoring interface: +set interface ip address GigabitEthernet0/11/0 192.168.2.13/24 +set interface state GigabitEthernet0/11/0 up + +Configure SPAN +set span src GigabitEthernet0/10/0 dst GigabitEthernet0/11/0 + +### Operational data + +Active SPAN mirroring CLI show command: + show interfaces span + +Active SPAN mirroring API dump command: + sw_interface_span_dump diff --git a/src/vnet/span/span_api.c b/src/vnet/span/span_api.c new file mode 100644 index 00000000000..b4565663eb9 --- /dev/null +++ b/src/vnet/span/span_api.c @@ -0,0 +1,153 @@ +/* + *------------------------------------------------------------------ + * span_api.c - span mirroring api + * + * 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 <vlibmemory/api.h> + +#include <vnet/interface.h> +#include <vnet/api_errno.h> +#include <vnet/span/span.h> + +#include <vnet/vnet_msg_enum.h> + +#define vl_typedefs /* define message structures */ +#include <vnet/vnet_all_api_h.h> +#undef vl_typedefs + +#define vl_endianfun /* define message structures */ +#include <vnet/vnet_all_api_h.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 <vnet/vnet_all_api_h.h> +#undef vl_printfun + +#include <vlibapi/api_helper_macros.h> + +#define foreach_vpe_api_msg \ +_(SW_INTERFACE_SPAN_ENABLE_DISABLE, sw_interface_span_enable_disable) \ +_(SW_INTERFACE_SPAN_DUMP, sw_interface_span_dump) \ + +static void + vl_api_sw_interface_span_enable_disable_t_handler + (vl_api_sw_interface_span_enable_disable_t * mp) +{ + vl_api_sw_interface_span_enable_disable_reply_t *rmp; + int rv; + + vlib_main_t *vm = vlib_get_main (); + + rv = span_add_delete_entry (vm, ntohl (mp->sw_if_index_from), + ntohl (mp->sw_if_index_to), mp->state); + + REPLY_MACRO (VL_API_SW_INTERFACE_SPAN_ENABLE_DISABLE_REPLY); +} + +static void +vl_api_sw_interface_span_dump_t_handler (vl_api_sw_interface_span_dump_t * mp) +{ + + unix_shared_memory_queue_t *q; + span_interface_t *si; + vl_api_sw_interface_span_details_t *rmp; + span_main_t *sm = &span_main; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (!q) + return; + + /* *INDENT-OFF* */ + vec_foreach (si, sm->interfaces) + if (si->num_rx_mirror_ports || si->num_tx_mirror_ports) + { + clib_bitmap_t *b; + u32 i; + b = clib_bitmap_dup_or (si->rx_mirror_ports, si->tx_mirror_ports); + clib_bitmap_foreach (i, b, ( + { + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_SPAN_DETAILS); + rmp->context = mp->context; + + rmp->sw_if_index_from = htonl (si - sm->interfaces); + rmp->sw_if_index_to = htonl (i); + rmp->state = (u8) (clib_bitmap_get (si->rx_mirror_ports, i) + + clib_bitmap_get (si->tx_mirror_ports, i) * 2); + + vl_msg_api_send_shmem (q, (u8 *) & rmp); + })); + clib_bitmap_free (b); + } + /* *INDENT-ON* */ +} + +/* + * vpe_api_hookup + * Add vpe's API message handlers to the table. + * vlib has alread mapped shared memory and + * added the client registration handlers. + * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() + */ +#define vl_msg_name_crc_list +#include <vnet/vnet_all_api_h.h> +#undef vl_msg_name_crc_list + +static void +setup_message_id_table (api_main_t * am) +{ +#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); + foreach_vl_msg_name_crc_span; +#undef _ +} + +static clib_error_t * +span_api_hookup (vlib_main_t * vm) +{ + api_main_t *am = &api_main; + +#define _(N,n) \ + vl_msg_api_set_handlers(VL_API_##N, #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_vpe_api_msg; +#undef _ + + /* + * Set up the (msg_name, crc, message-id) table + */ + setup_message_id_table (am); + + return 0; +} + +VLIB_API_INIT_FUNCTION (span_api_hookup); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |