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authorBenoît Ganne <bganne@cisco.com>2019-01-21 17:41:25 +0100
committerDamjan Marion <dmarion@me.com>2019-01-31 22:08:54 +0000
commit362456a9bdc5ffc440bf776c3685ba81b8513f6e (patch)
treedb06209bef7bd0fbf5dceb94c2126a782f369040 /src/vlib/node_cli.c
parent35467f112acb21fe1ea287c7d8794b0859f149c0 (diff)
Add 'show vlib graphviz' command
Add a new command to dump vlib graph as graphviz/dot file Change-Id: I43fc072cff8153ac500e5fbc6641a3705c2e995e Signed-off-by: Benoît Ganne <bganne@cisco.com>
Diffstat (limited to 'src/vlib/node_cli.c')
-rw-r--r--src/vlib/node_cli.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/src/vlib/node_cli.c b/src/vlib/node_cli.c
index ad17c1d6f4d..c8e32b58a69 100644
--- a/src/vlib/node_cli.c
+++ b/src/vlib/node_cli.c
@@ -37,6 +37,9 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
#include <vlib/vlib.h>
#include <vlib/threads.h>
@@ -88,6 +91,81 @@ VLIB_CLI_COMMAND (show_node_graph_command, static) = {
};
/* *INDENT-ON* */
+static clib_error_t *
+show_node_graphviz (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ clib_error_t *error = 0;
+ vlib_node_main_t *nm = &vm->node_main;
+ u8 *chroot_filename = 0;
+ int fd;
+ vlib_node_t **nodes = 0;
+ uword i, j;
+
+ if (!unformat_user (input, unformat_vlib_tmpfile, &chroot_filename))
+ {
+ fd = -1;
+ }
+ else
+ {
+ fd =
+ open ((char *) chroot_filename, O_CREAT | O_TRUNC | O_WRONLY, 0664);
+ }
+
+#define format__(vm__, fd__, ...) \
+ if ((fd) < 0) \
+ { \
+ vlib_cli_output((vm__), ## __VA_ARGS__); \
+ } \
+ else \
+ { \
+ fdformat((fd__), ## __VA_ARGS__); \
+ }
+
+ format__ (vm, fd, "%s", "digraph {\n");
+
+ nodes = vec_dup (nm->nodes);
+ vec_sort_with_function (nodes, node_cmp);
+
+ for (i = 0; i < vec_len (nodes); i++)
+ {
+ for (j = 0; j < vec_len (nodes[i]->next_nodes); j++)
+ {
+ vlib_node_t *x;
+
+ if (nodes[i]->next_nodes[j] == VLIB_INVALID_NODE_INDEX)
+ continue;
+
+ x = vec_elt (nm->nodes, nodes[i]->next_nodes[j]);
+ format__ (vm, fd, " \"%v\" -> \"%v\"\n", nodes[i]->name, x->name);
+ }
+ }
+
+ format__ (vm, fd, "%s", "}");
+
+ if (fd >= 0)
+ {
+ vlib_cli_output (vm,
+ "vlib graph dumped into `%s'. Run eg. `fdp -Tsvg -O %s'.",
+ chroot_filename, chroot_filename);
+ }
+
+ vec_free (nodes);
+ vec_free (chroot_filename);
+ vec_free (nodes);
+ if (fd >= 0)
+ close (fd);
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_node_graphviz_command, static) = {
+ .path = "show vlib graphviz",
+ .short_help = "Dump packet processing node graph as a graphviz dotfile",
+ .function = show_node_graphviz,
+};
+/* *INDENT-ON* */
+
static u8 *
format_vlib_node_state (u8 * s, va_list * va)
{