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-rw-r--r--src/plugins/unittest/vlib_test.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/src/plugins/unittest/vlib_test.c b/src/plugins/unittest/vlib_test.c
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+++ b/src/plugins/unittest/vlib_test.c
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+/*
+ * Copyright (c) 2019 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>
+
+u8 *vlib_validate_buffers (vlib_main_t * vm,
+ u32 * buffers,
+ uword next_buffer_stride,
+ uword n_buffers,
+ vlib_buffer_known_state_t known_state,
+ uword follow_buffer_next);
+
+static clib_error_t *
+test_vlib_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ u32 bi;
+ u8 *res;
+ u32 allocated;
+ vlib_buffer_t *b;
+ vlib_buffer_t *last_b;
+ u8 junk[4] = { 1, 2, 3, 4 };
+ vlib_packet_template_t _t, *t = &_t;
+ u8 *data_copy = 0;
+
+ /* Cover vlib_packet_template_get_packet */
+ t->packet_data = format (0, "silly packet data");
+ t->min_n_buffers_each_alloc = 1;
+ t->name = (u8 *) "test template";
+
+ if (vlib_packet_template_get_packet (vm, t, &bi))
+ vlib_buffer_free_one (vm, bi);
+
+ vec_free (t->packet_data);
+
+ /* Get a buffer */
+ allocated = vlib_buffer_alloc (vm, &bi, 1);
+ if (allocated != 1)
+ return clib_error_return (0, "Buffer allocation failure!");
+
+ b = vlib_get_buffer (vm, bi);
+
+ /* Force buffer allocation */
+ b->current_length = 2048;
+ last_b = b;
+ vlib_buffer_chain_append_data_with_alloc (vm, b, &last_b,
+ junk, ARRAY_LEN (junk));
+
+ /* Cover vlib_buffer_length_in_chain_slow_path(...) */
+ b->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID);
+ vlib_cli_output (vm, "buffer length %d",
+ vlib_buffer_length_in_chain (vm, b));
+ b->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID);
+ vlib_cli_output (vm, "%u", vlib_buffer_index_length_in_chain (vm, bi));
+
+ /* Add more data. Eat Mor Chikin. */
+ vlib_buffer_add_data (vm, &bi, junk, ARRAY_LEN (junk));
+
+ /* Dump the resulting two-chunk pkt */
+ vlib_cli_output (vm, "%U", format_vlib_buffer_and_data, b);
+
+ vec_validate (data_copy, vlib_buffer_length_in_chain (vm, b) - 1);
+ vlib_cli_output (vm, "%u", vlib_buffer_contents (vm, bi, data_copy));
+ vec_free (data_copy);
+
+ /* Cover simple functions in buffer.h / buffer_funcs.h */
+ vlib_cli_output (vm, "%llx", vlib_buffer_get_va (b));
+ vlib_cli_output (vm, "%llx", vlib_buffer_get_current_va (b));
+ vlib_cli_output (vm, "%d", vlib_buffer_has_space (b, 100ll));
+ vlib_buffer_reset (b);
+ vlib_cli_output (vm, "%llx", vlib_buffer_get_tail (b));
+ vlib_buffer_put_uninit (b, 0);
+ vlib_buffer_push_uninit (b, 0);
+ vlib_buffer_make_headroom (b, 0);
+ (void) vlib_buffer_pull (b, 0);
+ vlib_cli_output (vm, "%llx", vlib_buffer_get_pa (vm, b));
+ vlib_cli_output (vm, "%llx", vlib_buffer_get_current_pa (vm, b));
+
+ /* Validate it one way */
+ res = vlib_validate_buffer (vm, bi, 1 /* follow_buffer_next */ );
+ if (res)
+ return clib_error_return (0, "%v", res);
+
+ /* Validate it a different way */
+ res = vlib_validate_buffers (vm, &bi, 0 /* stride */ ,
+ 1, VLIB_BUFFER_KNOWN_ALLOCATED,
+ 1 /* follow_buffer_next */ );
+ if (res)
+ return clib_error_return (0, "%v", res);
+
+ /* Free it */
+ vlib_buffer_free_one (vm, bi);
+ /* It will be free */
+ res = vlib_validate_buffers (vm, &bi, 0 /* stride */ ,
+ 1, VLIB_BUFFER_KNOWN_FREE,
+ 1 /* follow_buffer_next */ );
+ if (res)
+ return clib_error_return (0, "%v", res);
+
+ /* It will not be allocated, exercise error path */
+ res = vlib_validate_buffers (vm, &bi, 0 /* stride */ ,
+ 1, VLIB_BUFFER_KNOWN_ALLOCATED,
+ 1 /* follow_buffer_next */ );
+ if (res)
+ return clib_error_return (0, "%v", res);
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (test_vlib_command, static) =
+{
+ .path = "test vlib",
+ .short_help = "vlib code coverate unit test",
+ .function = test_vlib_command_fn,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */