span: add tx functionality and support for multiple mirror ports
Change-Id: Ib6dd290085e6f9a434499af8d19f346220dc8428
Signed-off-by: Damjan Marion <damarion@cisco.com>
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
diff --git a/vnet/Makefile.am b/vnet/Makefile.am
index a8e4867..a5f47fc 100644
--- a/vnet/Makefile.am
+++ b/vnet/Makefile.am
@@ -21,7 +21,9 @@
vnet/l2/l2.api.h \
vnet/l2/l2.api.json \
vnet/map/map.api.h \
- vnet/map/map.api.json
+ vnet/map/map.api.json \
+ vnet/span/span.api.h \
+ vnet/span/span.api.json
libvnet_la_SOURCES =
libvnetplugin_la_SOURCES =
@@ -667,10 +669,12 @@
########################################
libvnet_la_SOURCES += \
- vnet/span/span.c \
+ vnet/span/span_api.c \
+ vnet/span/span.c \
vnet/span/node.c
nobase_include_HEADERS += \
+ vnet/span/span.api.h \
vnet/span/span.h
########################################
diff --git a/vnet/vnet/buffer.h b/vnet/vnet/buffer.h
index 6da6993..898c94e 100644
--- a/vnet/vnet/buffer.h
+++ b/vnet/vnet/buffer.h
@@ -70,6 +70,9 @@
#define LOG2_VNET_BUFFER_LOCALLY_ORIGINATED LOG2_VLIB_BUFFER_FLAG_USER(7)
#define VNET_BUFFER_LOCALLY_ORIGINATED (1 << LOG2_VNET_BUFFER_LOCALLY_ORIGINATED)
+#define LOG2_VNET_BUFFER_SPAN_CLONE LOG2_VLIB_BUFFER_FLAG_USER(8)
+#define VNET_BUFFER_SPAN_CLONE (1 << LOG2_VNET_BUFFER_SPAN_CLONE)
+
#define foreach_buffer_opaque_union_subtype \
_(ethernet) \
_(ip) \
diff --git a/vnet/vnet/interface_output.c b/vnet/vnet/interface_output.c
index 3302e79..475b0b9 100644
--- a/vnet/vnet/interface_output.c
+++ b/vnet/vnet/interface_output.c
@@ -1223,9 +1223,16 @@
{
.arc_name = "interface-output",
.start_nodes = VNET_FEATURES (0),
+ .end_node = "interface-tx",
.arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
};
+VNET_FEATURE_INIT (span_tx, static) = {
+ .arc_name = "interface-output",
+ .node_name = "span-output",
+ .runs_before = VNET_FEATURES ("interface-tx"),
+};
+
VNET_FEATURE_INIT (interface_tx, static) = {
.arc_name = "interface-output",
.node_name = "interface-tx",
diff --git a/vnet/vnet/span/node.c b/vnet/vnet/span/node.c
index 32d4407..50d642c 100644
--- a/vnet/vnet/span/node.c
+++ b/vnet/vnet/span/node.c
@@ -57,23 +57,61 @@
#undef _
};
-static uword
-span_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+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, *to_mirror_next = 0;
+ u32 n_left_from, *from, *to_next;
u32 n_span_packets = 0;
- u32 next_index, mirror_sw_if_index0, mirror_sw_if_index1;
- u32 last_mirror_sw_if_index = ~0;
- vlib_frame_t *mirror_frame = 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;
- /* TODO dual loop */
+ vec_validate_aligned (mirror_frames, sm->max_sw_if_index,
+ CLIB_CACHE_LINE_BYTES);
+
while (n_left_from > 0)
{
u32 n_left_to_next;
@@ -84,8 +122,9 @@
{
u32 bi0;
u32 bi1;
- vlib_buffer_t *b0, *c0;
- vlib_buffer_t *b1, *c1;
+ vlib_buffer_t *b0;
+ vlib_buffer_t *b1;
+ span_interface_t *si0, *si1;
u32 sw_if_index0;
u32 next0 = 0;
u32 sw_if_index1;
@@ -100,68 +139,30 @@
n_left_from -= 2;
b0 = vlib_get_buffer (vm, bi0);
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- mirror_sw_if_index0 = sm->dst_by_src_sw_if_index[sw_if_index0];
b1 = vlib_get_buffer (vm, bi1);
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
- mirror_sw_if_index1 = sm->dst_by_src_sw_if_index[sw_if_index1];
+ 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);
- /* get frame to mirror interface */
- if (PREDICT_FALSE
- ((last_mirror_sw_if_index != mirror_sw_if_index0)
- || mirror_frame == 0))
- {
- if (mirror_frame)
- vnet_put_frame_to_sw_interface (vnm, last_mirror_sw_if_index,
- mirror_frame);
- last_mirror_sw_if_index = mirror_sw_if_index0;
- mirror_frame =
- vnet_get_frame_to_sw_interface (vnm, mirror_sw_if_index0);
- to_mirror_next = vlib_frame_vector_args (mirror_frame);
- }
- /* get frame to mirror interface */
- if (PREDICT_FALSE
- ((last_mirror_sw_if_index != mirror_sw_if_index1)
- || mirror_frame == 0))
- {
- if (mirror_frame)
- vnet_put_frame_to_sw_interface (vnm, last_mirror_sw_if_index,
- mirror_frame);
- last_mirror_sw_if_index = mirror_sw_if_index1;
- mirror_frame =
- vnet_get_frame_to_sw_interface (vnm, mirror_sw_if_index0);
- to_mirror_next = vlib_frame_vector_args (mirror_frame);
- }
- c0 = vlib_buffer_copy (vm, b0);
- vnet_buffer (c0)->sw_if_index[VLIB_TX] = mirror_sw_if_index0;
- to_mirror_next[0] = vlib_get_buffer_index (vm, c0);
- to_mirror_next += 1;
- mirror_frame->n_vectors++;
+ 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);
-
- c1 = vlib_buffer_copy (vm, b1);
- vnet_buffer (c1)->sw_if_index[VLIB_TX] = mirror_sw_if_index1;
- to_mirror_next[0] = vlib_get_buffer_index (vm, c1);
- to_mirror_next += 1;
- mirror_frame->n_vectors++;
-
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 =
- sm->dst_by_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 =
- sm->dst_by_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,
@@ -171,7 +172,8 @@
while (n_left_from > 0 && n_left_to_next > 0)
{
u32 bi0;
- vlib_buffer_t *b0, *c0;
+ vlib_buffer_t *b0;
+ span_interface_t *si0;
u32 sw_if_index0;
u32 next0 = 0;
@@ -183,27 +185,9 @@
n_left_from -= 1;
b0 = vlib_get_buffer (vm, bi0);
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- mirror_sw_if_index0 = sm->dst_by_src_sw_if_index[sw_if_index0];
-
- /* get frame to mirror interface */
- if (PREDICT_FALSE
- ((last_mirror_sw_if_index != mirror_sw_if_index0)
- || mirror_frame == 0))
- {
- if (mirror_frame)
- vnet_put_frame_to_sw_interface (vnm, last_mirror_sw_if_index,
- mirror_frame);
- last_mirror_sw_if_index = mirror_sw_if_index0;
- mirror_frame =
- vnet_get_frame_to_sw_interface (vnm, mirror_sw_if_index0);
- to_mirror_next = vlib_frame_vector_args (mirror_frame);
- }
- c0 = vlib_buffer_copy (vm, b0);
- vnet_buffer (c0)->sw_if_index[VLIB_TX] = mirror_sw_if_index0;
- to_mirror_next[0] = vlib_get_buffer_index (vm, c0);
- to_mirror_next += 1;
- mirror_frame->n_vectors++;
+ 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);
@@ -211,8 +195,6 @@
{
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 =
- sm->dst_by_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,
@@ -222,16 +204,39 @@
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vnet_put_frame_to_sw_interface (vnm, last_mirror_sw_if_index, mirror_frame);
+
+ 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_node) = {
- .function = span_node_fn,
+VLIB_REGISTER_NODE (span_input_node) = {
+ .function = span_input_node_fn,
.name = "span-input",
.vector_size = sizeof (u32),
.format_trace = format_span_trace,
@@ -248,9 +253,30 @@
},
};
+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* */
-VLIB_NODE_FUNCTION_MULTIARCH (span_node, span_node_fn)
/*
* fd.io coding-style-patch-verification: ON
*
diff --git a/vnet/vnet/span/span.api b/vnet/vnet/span/span.api
new file mode 100644
index 0000000..2f3b411
--- /dev/null
+++ b/vnet/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;
+};
\ No newline at end of file
diff --git a/vnet/vnet/span/span.c b/vnet/vnet/span/span.c
index 5230045..7b5816c 100644
--- a/vnet/vnet/span/span.c
+++ b/vnet/vnet/span/span.c
@@ -21,22 +21,59 @@
int
span_add_delete_entry (vlib_main_t * vm,
- u32 src_sw_if_index, u32 dst_sw_if_index, u8 is_add)
+ 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 ((src_sw_if_index == ~0) || (dst_sw_if_index == ~0 && is_add)
+ 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 =
- vnet_get_sw_interface (sm->vnet_main, src_sw_if_index);
+ vnet_sw_interface_t *sw_if;
- vec_validate_aligned (sm->dst_by_src_sw_if_index, sw->sw_if_index,
+ 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);
- sm->dst_by_src_sw_if_index[sw->sw_if_index] = is_add ? dst_sw_if_index : 0;
- vnet_feature_enable_disable ("device-input", "span-input",
- sw->sw_if_index, is_add, 0, 0);
+ 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;
}
@@ -48,7 +85,7 @@
span_main_t *sm = &span_main;
u32 src_sw_if_index = ~0;
u32 dst_sw_if_index = ~0;
- u8 is_add = 1;
+ u8 state = 3;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
@@ -59,13 +96,19 @@
sm->vnet_main, &dst_sw_if_index))
;
else if (unformat (input, "disable"))
- is_add = 0;
+ 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, is_add);
+ 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;
@@ -74,7 +117,7 @@
/* *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>]",
+ .short_help = "set interface span <if-name> [disable | destination <if-name> [both|rx|tx]]",
.function = set_interface_span_command_fn,
};
/* *INDENT-ON* */
@@ -84,28 +127,43 @@
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;
- u32 src_sw_if_index = 0, *dst_sw_if_index;
u8 header = 1;
+ char *states[] = { "none", "rx", "tx", "both" };
+ u8 *s = 0;
- vec_foreach (dst_sw_if_index, sm->dst_by_src_sw_if_index)
- {
- if (*dst_sw_if_index > 0) // && *dst_sw_if_index != ~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,
- "SPAN source interface to destination interface table");
+ vlib_cli_output (vm, "%-40s %s", "Source interface",
+ "Mirror interface (direction)");
header = 0;
}
- vlib_cli_output (vm, "%32U => %-32U",
- format_vnet_sw_if_index_name, vnm, src_sw_if_index,
- format_vnet_sw_if_index_name, vnm, *dst_sw_if_index);
+ 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);
}
- src_sw_if_index++;
- }
+ /* *INDENT-ON* */
+ vec_free (s);
return 0;
}
diff --git a/vnet/vnet/span/span.h b/vnet/vnet/span/span.h
index 751bebf..a98b010 100644
--- a/vnet/vnet/span/span.h
+++ b/vnet/vnet/span/span.h
@@ -21,8 +21,19 @@
typedef struct
{
- /* destination interface index by source interface index */
- u32 *dst_by_src_sw_if_index;
+ 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;
diff --git a/vnet/vnet/span/span_api.c b/vnet/vnet/span/span_api.c
new file mode 100644
index 0000000..eacd6ec
--- /dev/null
+++ b/vnet/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_l2;
+#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:
+ */
diff --git a/vnet/vnet/vnet_all_api_h.h b/vnet/vnet/vnet_all_api_h.h
index 887b1b0..c8ead56 100644
--- a/vnet/vnet/vnet_all_api_h.h
+++ b/vnet/vnet/vnet_all_api_h.h
@@ -32,6 +32,7 @@
#include <vnet/interface.api.h>
#include <vnet/map/map.api.h>
#include <vnet/l2/l2.api.h>
+#include <vnet/span/span.api.h>
/*
* fd.io coding-style-patch-verification: ON