/*
* Add or modify flow table entry.
*
* When modifying, the stats can be optionally cleared
*/
static void
flow_cmd_new(struct dpdk_flow_message *request)
{
struct dpdk_message reply = {0};
int pos = 0;
pos = flow_table_lookup(&request->key);
if (pos < 0) {
if (request->flags & FLAG_CREATE) {
flow_table_add_flow(&request->key, request->actions);
reply.type = 0;
} else {
reply.type = ENOENT;
}
} else {
if (request->flags & FLAG_REPLACE) {
/* Retrieve flow stats*/
flow_table_get_flow(&request->key,
NULL, &request->stats);
/* Depending on the value of request->clear we will
* either update or keep the same stats
*/
flow_table_mod_flow(&request->key,
request->actions, request->clear);
reply.type = 0;
} else {
reply.type = EEXIST;
}
}
reply.flow_msg = *request;
send_reply_to_vswitchd(&reply);
}
/* Try to modify a flow, which should succeed */
static void
test_flow_table_mod_flow(int argc, char *argv[])
{
struct flow_key key1 = {1};
struct action action_multiple[MAX_ACTIONS] = {0};
struct action action_check[MAX_ACTIONS] = {0};
struct flow_stats stats_zero = {0};
struct flow_stats stats_check = {0};
int ret = 0;
flow_table_init();
/* add a flow with 2 actions */
action_output_build(&action_multiple[0], 2);
action_output_build(&action_multiple[1], 1);
action_null_build(&action_multiple[2]);
flow_table_add_flow(&key1, action_multiple);
action_output_build(&action_multiple[0], 1);
action_null_build(&action_multiple[1]);
/*modify it to only have 1 action */
flow_table_mod_flow(&key1, action_multiple, true);
ret = flow_table_get_flow(&key1, action_check, &stats_check);
assert(ret >= 0);
assert(memcmp(&action_multiple[0], action_check, sizeof(struct action)) == 0);
/* check that our flow now only has one entry */
assert(action_check[1].type == ACTION_NULL);
assert(memcmp(&stats_zero, &stats_check , sizeof(struct flow_stats)) == 0 );
}
