/**
* Bind an object of type of_list_instruction_t to the parent of type of_flow_modify for
* member instructions
* @param obj Pointer to an object of type of_flow_modify.
* @param instructions Pointer to the child object of type
* of_list_instruction_t to be filled out.
* \ingroup of_flow_modify
*
* The parameter instructions is filled out to point to the same underlying
* wire buffer as its parent.
*
*/
void
of_flow_modify_instructions_bind(
of_flow_modify_t *obj,
of_list_instruction_t *instructions)
{
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 */
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_1:
offset = 136;
cur_len = _END_LEN(obj, offset);
break;
case OF_VERSION_1_2:
case OF_VERSION_1_3:
offset = _FLOW_MODIFY_INSTRUCTIONS_OFFSET(obj);
cur_len = _END_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);
/* Initialize child */
of_list_instruction_init(instructions, obj->version, 0, 1);
/* Attach to parent */
instructions->parent = (of_object_t *)obj;
instructions->wire_object.wbuf = obj->wire_object.wbuf;
instructions->wire_object.obj_offset = abs_offset;
instructions->wire_object.owned = 0;
instructions->length = cur_len;
OF_LENGTH_CHECK_ASSERT(obj);
return ;
}
of_object_t *
of_list_instruction_new(of_version_t version)
{
of_object_t *obj;
int bytes;
bytes = of_object_fixed_len[version][OF_LIST_INSTRUCTION];
if ((obj = of_object_new(OF_WIRE_BUFFER_MAX_LENGTH)) == NULL) {
return NULL;
}
of_list_instruction_init(obj, version, bytes, 0);
return obj;
}
