session: add session lookup cli for stats
Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I96bff47206ef64ea7369ae92e1b9ff1f74dfd71b
diff --git a/src/vnet/session/session_lookup.c b/src/vnet/session/session_lookup.c
index a884599..335905d 100644
--- a/src/vnet/session/session_lookup.c
+++ b/src/vnet/session/session_lookup.c
@@ -1710,6 +1710,85 @@
};
/* *INDENT-ON* */
+u8 *
+format_session_lookup_tables (u8 *s, va_list *args)
+{
+ u32 fib_proto = va_arg (*args, u32);
+ u32 *fibs, num_fibs = 0, fib_index, indent;
+ session_table_t *st;
+ u64 total_mem = 0;
+
+ fibs = fib_index_to_table_index[fib_proto];
+
+ for (fib_index = 0; fib_index < vec_len (fibs); fib_index++)
+ {
+ if (fibs[fib_index] == ~0)
+ continue;
+
+ num_fibs += 1;
+ st = session_table_get (fibs[fib_index]);
+ total_mem += session_table_memory_size (st);
+ }
+
+ indent = format_get_indent (s);
+ s = format (s, "active fibs:\t%u\n", num_fibs);
+ s = format (s, "%Umax fib-index:\t%u\n", format_white_space, indent,
+ vec_len (fibs) - 1);
+ s = format (s, "%Utable memory:\t%U\n", format_white_space, indent,
+ format_memory_size, total_mem);
+ s = format (s, "%Uvec memory:\t%U\n", format_white_space, indent,
+ format_memory_size, vec_mem_size (fibs));
+
+ return s;
+}
+
+static clib_error_t *
+show_session_lookup_command_fn (vlib_main_t *vm, unformat_input_t *input,
+ vlib_cli_command_t *cmd)
+{
+ session_table_t *st;
+ u32 fib_index = ~0;
+
+ session_cli_return_if_not_enabled ();
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "table %u", &fib_index))
+ ;
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+
+ if (fib_index != ~0)
+ {
+ st = session_table_get_for_fib_index (FIB_PROTOCOL_IP4, fib_index);
+ if (st)
+ vlib_cli_output (vm, "%U", format_session_table, st);
+ else
+ vlib_cli_output (vm, "no ip4 table for fib-index %u", fib_index);
+ st = session_table_get_for_fib_index (FIB_PROTOCOL_IP6, fib_index);
+ if (st)
+ vlib_cli_output (vm, "%U", format_session_table, st);
+ else
+ vlib_cli_output (vm, "no ip6 table for fib-index %u", fib_index);
+ goto done;
+ }
+
+ vlib_cli_output (vm, "ip4 fib lookup tables:\n %U",
+ format_session_lookup_tables, FIB_PROTOCOL_IP4);
+ vlib_cli_output (vm, "ip6 fib lookup tables:\n %U",
+ format_session_lookup_tables, FIB_PROTOCOL_IP6);
+
+done:
+ return 0;
+}
+
+VLIB_CLI_COMMAND (show_session_lookup_command, static) = {
+ .path = "show session lookup",
+ .short_help = "show session lookup [table <fib-index>]",
+ .function = show_session_lookup_command_fn,
+};
+
void
session_lookup_init (void)
{
diff --git a/src/vnet/session/session_table.c b/src/vnet/session/session_table.c
index 9af8ae6..cbb284d 100644
--- a/src/vnet/session/session_table.c
+++ b/src/vnet/session/session_table.c
@@ -185,6 +185,66 @@
&ctx);
}
+u32
+session_table_memory_size (session_table_t *st)
+{
+ u64 total_size = 0;
+
+ if (clib_bihash_is_initialised_16_8 (&st->v4_session_hash))
+ {
+ clib_bihash_alloc_chunk_16_8_t *c = st->v4_session_hash.chunks;
+ while (c)
+ {
+ total_size += c->size;
+ c = c->next;
+ }
+ c = st->v4_half_open_hash.chunks;
+ while (c)
+ {
+ total_size += c->size;
+ c = c->next;
+ }
+ }
+
+ if (clib_bihash_is_initialised_48_8 (&st->v6_session_hash))
+ {
+ clib_bihash_alloc_chunk_48_8_t *c = st->v6_session_hash.chunks;
+ while (c)
+ {
+ total_size += c->size;
+ c = c->next;
+ }
+ c = st->v6_half_open_hash.chunks;
+ while (c)
+ {
+ total_size += c->size;
+ c = c->next;
+ }
+ }
+
+ return total_size;
+}
+
+u8 *
+format_session_table (u8 *s, va_list *args)
+{
+ session_table_t *st = va_arg (*args, session_table_t *);
+
+ if (clib_bihash_is_initialised_16_8 (&st->v4_session_hash))
+ {
+ s = format (s, "%U", format_bihash_16_8, &st->v4_session_hash, 0);
+ s = format (s, "%U", format_bihash_16_8, &st->v4_half_open_hash, 0);
+ }
+
+ if (clib_bihash_is_initialised_48_8 (&st->v6_session_hash))
+ {
+ s = format (s, "%U", format_bihash_48_8, &st->v6_session_hash, 0);
+ s = format (s, "%U", format_bihash_48_8, &st->v6_half_open_hash, 0);
+ }
+
+ return s;
+}
+
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
diff --git a/src/vnet/session/session_table.h b/src/vnet/session/session_table.h
index 2127ea4..8e10b2f 100644
--- a/src/vnet/session/session_table.h
+++ b/src/vnet/session/session_table.h
@@ -69,6 +69,9 @@
void session_table_init (session_table_t * slt, u8 fib_proto);
void session_table_free (session_table_t *slt, u8 fib_proto);
+u32 session_table_memory_size (session_table_t *st);
+u8 *format_session_table (u8 *s, va_list *args);
+
/* Internal, try not to use it! */
session_table_t *_get_session_tables ();