2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vlib/vlib.h>
17 #include <vppinfra/error.h>
18 #include <vnet/feature/feature.h>
19 #include <vnet/l2/l2_input.h>
20 #include <vnet/l2/l2_output.h>
22 #include <vnet/span/span.h>
29 SPAN_BOTH = SPAN_RX | SPAN_TX
32 static_always_inline u32
33 span_dst_set (span_mirror_t * sm, u32 dst_sw_if_index, int enable)
36 clib_bitmap_set (sm->mirror_ports, dst_sw_if_index, enable);
37 u32 last = sm->num_mirror_ports;
38 sm->num_mirror_ports = clib_bitmap_count_set_bits (sm->mirror_ports);
43 span_add_delete_entry (vlib_main_t * vm,
44 u32 src_sw_if_index, u32 dst_sw_if_index, u8 state,
47 span_main_t *sm = &span_main;
49 if (state > SPAN_BOTH)
50 return VNET_API_ERROR_UNIMPLEMENTED;
52 if ((src_sw_if_index == ~0) || (dst_sw_if_index == ~0 && state > 0)
53 || (src_sw_if_index == dst_sw_if_index))
54 return VNET_API_ERROR_INVALID_INTERFACE;
56 vec_validate_aligned (sm->interfaces, src_sw_if_index,
57 CLIB_CACHE_LINE_BYTES);
59 span_interface_t *si = vec_elt_at_index (sm->interfaces, src_sw_if_index);
61 int rx = ! !(state & SPAN_RX);
62 int tx = ! !(state & SPAN_TX);
64 span_mirror_t *rxm = &si->mirror_rxtx[sf][VLIB_RX];
65 span_mirror_t *txm = &si->mirror_rxtx[sf][VLIB_TX];
67 u32 last_rx_ports_count = span_dst_set (rxm, dst_sw_if_index, rx);
68 u32 last_tx_ports_count = span_dst_set (txm, dst_sw_if_index, tx);
70 int enable_rx = last_rx_ports_count == 0 && rxm->num_mirror_ports == 1;
71 int disable_rx = last_rx_ports_count == 1 && rxm->num_mirror_ports == 0;
72 int enable_tx = last_tx_ports_count == 0 && txm->num_mirror_ports == 1;
73 int disable_tx = last_tx_ports_count == 1 && txm->num_mirror_ports == 0;
77 case SPAN_FEAT_DEVICE:
78 if (enable_rx || disable_rx)
79 vnet_feature_enable_disable ("device-input", "span-input",
80 src_sw_if_index, rx, 0, 0);
81 if (enable_tx || disable_tx)
82 vnet_feature_enable_disable ("interface-output", "span-output",
83 src_sw_if_index, tx, 0, 0);
86 if (enable_rx || disable_rx)
87 l2input_intf_bitmap_enable (src_sw_if_index, L2INPUT_FEAT_SPAN, rx);
88 if (enable_tx || disable_tx)
89 l2output_intf_bitmap_enable (src_sw_if_index, L2OUTPUT_FEAT_SPAN, tx);
92 return VNET_API_ERROR_UNIMPLEMENTED;
95 if (dst_sw_if_index > sm->max_sw_if_index)
96 sm->max_sw_if_index = dst_sw_if_index;
101 static clib_error_t *
102 set_interface_span_command_fn (vlib_main_t * vm,
103 unformat_input_t * input,
104 vlib_cli_command_t * cmd)
106 span_main_t *sm = &span_main;
107 u32 src_sw_if_index = ~0;
108 u32 dst_sw_if_index = ~0;
109 u8 state = SPAN_BOTH;
110 span_feat_t sf = SPAN_FEAT_DEVICE;
112 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
114 if (unformat (input, "%U", unformat_vnet_sw_interface,
115 sm->vnet_main, &src_sw_if_index))
117 else if (unformat (input, "destination %U", unformat_vnet_sw_interface,
118 sm->vnet_main, &dst_sw_if_index))
120 else if (unformat (input, "disable"))
121 state = SPAN_DISABLE;
122 else if (unformat (input, "rx"))
124 else if (unformat (input, "tx"))
126 else if (unformat (input, "both"))
128 else if (unformat (input, "l2"))
135 span_add_delete_entry (vm, src_sw_if_index, dst_sw_if_index, state, sf);
136 if (rv == VNET_API_ERROR_INVALID_INTERFACE)
137 return clib_error_return (0, "Invalid interface");
142 VLIB_CLI_COMMAND (set_interface_span_command, static) = {
143 .path = "set interface span",
144 .short_help = "set interface span <if-name> [l2] {disable | destination <if-name> [both|rx|tx]}",
145 .function = set_interface_span_command_fn,
149 static clib_error_t *
150 show_interfaces_span_command_fn (vlib_main_t * vm,
151 unformat_input_t * input,
152 vlib_cli_command_t * cmd)
154 span_main_t *sm = &span_main;
155 span_interface_t *si;
156 vnet_main_t *vnm = &vnet_main;
158 char *states[] = { "none", "rx", "tx", "both" };
162 vec_foreach (si, sm->interfaces)
164 span_mirror_t * drxm = &si->mirror_rxtx[SPAN_FEAT_DEVICE][VLIB_RX];
165 span_mirror_t * dtxm = &si->mirror_rxtx[SPAN_FEAT_DEVICE][VLIB_TX];
167 span_mirror_t * lrxm = &si->mirror_rxtx[SPAN_FEAT_L2][VLIB_RX];
168 span_mirror_t * ltxm = &si->mirror_rxtx[SPAN_FEAT_L2][VLIB_TX];
170 if (drxm->num_mirror_ports || dtxm->num_mirror_ports ||
171 lrxm->num_mirror_ports || ltxm->num_mirror_ports)
174 clib_bitmap_t *d = clib_bitmap_dup_or (drxm->mirror_ports, dtxm->mirror_ports);
175 clib_bitmap_t *l = clib_bitmap_dup_or (lrxm->mirror_ports, ltxm->mirror_ports);
176 clib_bitmap_t *b = clib_bitmap_dup_or (d, l);
179 vlib_cli_output (vm, "%-20s %-20s %6s %6s", "Source", "Destination",
183 s = format (s, "%U", format_vnet_sw_if_index_name, vnm,
184 si - sm->interfaces);
185 clib_bitmap_foreach (i, b, (
187 int device = (clib_bitmap_get (drxm->mirror_ports, i) +
188 clib_bitmap_get (dtxm->mirror_ports, i) * 2);
189 int l2 = (clib_bitmap_get (lrxm->mirror_ports, i) +
190 clib_bitmap_get (ltxm->mirror_ports, i) * 2);
192 vlib_cli_output (vm, "%-20v %-20U (%6s) (%6s)", s,
193 format_vnet_sw_if_index_name, vnm, i,
194 states[device], states[l2]);
195 vec_reset_length (s);
197 clib_bitmap_free (b);
198 clib_bitmap_free (l);
199 clib_bitmap_free (d);
208 VLIB_CLI_COMMAND (show_interfaces_span_command, static) = {
209 .path = "show interface span",
210 .short_help = "Shows SPAN mirror table",
211 .function = show_interfaces_span_command_fn,
216 * fd.io coding-style-patch-verification: ON
219 * eval: (c-set-style "gnu")