/**
* Set match in an object of type of_flow_modify.
* @param obj Pointer to an object of type of_flow_modify.
* @param match Pointer to the child of type of_match_t.
*
* If the child's wire buffer is the same as the parent's, then
* nothing is done as the changes have already been registered in the
* parent. Otherwise, the data in the child's wire buffer is inserted
* into the parent's and the appropriate lengths are updated.
*/
int WARN_UNUSED_RESULT
of_flow_modify_match_set(
of_flow_modify_t *obj,
of_match_t *match)
{
of_wire_buffer_t *wbuf;
int offset = 0; /* Offset of value relative to the start obj */
int abs_offset; /* Offset of value relative to start of wbuf */
of_version_t ver;
int cur_len = 0; /* Current length of object data */
int new_len, delta; /* For set, need new length and delta */
of_octets_t match_octets; /* Serialized string for match */
ASSERT(IS_FLOW_MOD_SUBTYPE(obj->object_id));
ver = obj->version;
wbuf = OF_OBJECT_TO_WBUF(obj);
ASSERT(wbuf != NULL);
/* By version, determine offset and current length (where needed) */
switch (ver) {
case OF_VERSION_1_0:
offset = 8;
cur_len = _WIRE_MATCH_PADDED_LEN(obj, offset);
break;
case OF_VERSION_1_1:
offset = 48;
cur_len = _WIRE_MATCH_PADDED_LEN(obj, offset);
break;
case OF_VERSION_1_2:
case OF_VERSION_1_3:
offset = 48;
cur_len = _WIRE_MATCH_PADDED_LEN(obj, offset);
break;
default:
ASSERT(0);
}
abs_offset = OF_OBJECT_ABSOLUTE_OFFSET(obj, offset);
ASSERT(abs_offset >= 0);
ASSERT(cur_len >= 0 && cur_len < 64 * 1024);
/* Match object */
OF_TRY(of_match_serialize(ver, match, &match_octets));
new_len = match_octets.bytes;
of_wire_buffer_replace_data(wbuf, abs_offset, cur_len,
match_octets.data, new_len);
/* Free match serialized octets */
FREE(match_octets.data);
/* Not scalar, update lengths if needed */
delta = new_len - cur_len;
if (delta != 0) {
/* Update parent(s) */
of_object_parent_length_update((of_object_t *)obj, delta);
}
OF_LENGTH_CHECK_ASSERT(obj);
return OF_ERROR_NONE;
}
static int
test_match_3(void)
{
of_match_t match1;
of_match_t match2;
int value = 1;
of_octets_t octets;
of_object_storage_t storage;
memset(&storage, 0, sizeof(storage));
storage.obj.wbuf = &storage.wbuf;
/* Serialize to version OF_VERSION_1_0 */
TEST_ASSERT((value = of_match_populate(&match1, OF_VERSION_1_0, value)) > 0);
TEST_ASSERT(of_match_serialize(OF_VERSION_1_0, &match1, &octets) ==
OF_ERROR_NONE);
storage.obj.wbuf->buf = octets.data;
storage.obj.wbuf->alloc_bytes = octets.bytes;
storage.obj.wbuf->current_bytes = octets.bytes;
TEST_ASSERT(of_match_deserialize(OF_VERSION_1_0, &match2, &storage.obj, 0, octets.bytes) ==
OF_ERROR_NONE);
TEST_ASSERT(memcmp(&match1, &match2, sizeof(match1)) == 0);
FREE(octets.data);
/* Serialize to version OF_VERSION_1_1 */
TEST_ASSERT((value = of_match_populate(&match1, OF_VERSION_1_1, value)) > 0);
TEST_ASSERT(of_match_serialize(OF_VERSION_1_1, &match1, &octets) ==
OF_ERROR_NONE);
storage.obj.wbuf->buf = octets.data;
storage.obj.wbuf->alloc_bytes = octets.bytes;
storage.obj.wbuf->current_bytes = octets.bytes;
TEST_ASSERT(of_match_deserialize(OF_VERSION_1_1, &match2, &storage.obj, 0, octets.bytes) ==
OF_ERROR_NONE);
TEST_ASSERT(memcmp(&match1, &match2, sizeof(match1)) == 0);
FREE(octets.data);
/* Serialize to version OF_VERSION_1_2 */
TEST_ASSERT((value = of_match_populate(&match1, OF_VERSION_1_2, value)) > 0);
TEST_ASSERT(of_match_serialize(OF_VERSION_1_2, &match1, &octets) ==
OF_ERROR_NONE);
storage.obj.wbuf->buf = octets.data;
storage.obj.wbuf->alloc_bytes = octets.bytes;
storage.obj.wbuf->current_bytes = octets.bytes;
TEST_ASSERT(of_match_deserialize(OF_VERSION_1_2, &match2, &storage.obj, 0, octets.bytes) ==
OF_ERROR_NONE);
TEST_ASSERT(memcmp(&match1, &match2, sizeof(match1)) == 0);
FREE(octets.data);
/* Serialize to version OF_VERSION_1_3 */
TEST_ASSERT((value = of_match_populate(&match1, OF_VERSION_1_3, value)) > 0);
TEST_ASSERT(of_match_serialize(OF_VERSION_1_3, &match1, &octets) ==
OF_ERROR_NONE);
storage.obj.wbuf->buf = octets.data;
storage.obj.wbuf->alloc_bytes = octets.bytes;
storage.obj.wbuf->current_bytes = octets.bytes;
TEST_ASSERT(of_match_deserialize(OF_VERSION_1_3, &match2, &storage.obj, 0, octets.bytes) ==
OF_ERROR_NONE);
TEST_ASSERT(memcmp(&match1, &match2, sizeof(match1)) == 0);
FREE(octets.data);
return TEST_PASS;
}
