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hwsim: add new 'Delay' property to Rules 

This allows a matching frame to be delayed by some number of
milliseconds.
This commit is contained in:
James Prestwood 2020-06-02 10:30:18 -07:00 committed by Denis Kenzior
parent 078c2d76c7
commit 32a55fb75c
1 changed files with 48 additions and 5 deletions
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53
tools/hwsim.c
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@ -113,6 +113,7 @@ enum hwsim_tx_control_flags {
};
#define IEEE80211_TX_RATE_TABLE_SIZE 4
#define HWSIM_DELAY_MIN_MS 1
struct hwsim_rule {
unsigned int id;
@ -125,6 +126,7 @@ struct hwsim_rule {
uint32_t frequency;
int priority;
int signal;
int delay;
};
struct hwsim_support {
@ -1106,7 +1108,8 @@ static bool radio_match_addr(const struct radio_info_rec *radio,
static void process_rules(const struct radio_info_rec *src_radio,
const struct radio_info_rec *dst_radio,
struct hwsim_frame *frame, bool *drop)
struct hwsim_frame *frame, bool *drop,
uint32_t *delay)
{
const struct l_queue_entry *rule_entry;
@ -1149,6 +1152,9 @@ static void process_rules(const struct radio_info_rec *src_radio,
frame->signal = rule->signal / 100;
*drop = rule->drop;
if (delay)
*delay = rule->delay;
}
}
@ -1232,7 +1238,7 @@ static void hwsim_frame_unref(struct hwsim_frame *frame)
bool drop = false;
process_rules(frame->ack_radio, frame->src_radio,
frame, &drop);
frame, &drop, NULL);
if (!drop)
frame->flags |= HWSIM_TX_STAT_ACK;
@ -1374,13 +1380,14 @@ static void process_frame(struct hwsim_frame *frame)
bool drop_mcast = false;
if (util_is_broadcast_address(frame->dst_ether_addr))
process_rules(frame->src_radio, NULL, frame, &drop_mcast);
process_rules(frame->src_radio, NULL, frame, &drop_mcast, NULL);
for (entry = l_queue_get_entries(radio_info); entry;
entry = entry->next) {
struct radio_info_rec *radio = entry->data;
struct send_frame_info *send_info;
bool drop = drop_mcast;
uint32_t delay = HWSIM_DELAY_MIN_MS;
if (radio == frame->src_radio)
continue;
@ -1413,7 +1420,7 @@ static void process_frame(struct hwsim_frame *frame)
continue;
}
process_rules(frame->src_radio, radio, frame, &drop);
process_rules(frame->src_radio, radio, frame, &drop, &delay);
if (drop)
continue;
@ -1422,7 +1429,7 @@ static void process_frame(struct hwsim_frame *frame)
send_info->radio = radio;
send_info->frame = hwsim_frame_ref(frame);
if (!l_timeout_create_ms(1, frame_delay_callback,
if (!l_timeout_create_ms(delay, frame_delay_callback,
send_info, NULL)) {
l_error("Error delaying frame, frame will be dropped");
send_frame_destroy(send_info);
@ -1875,6 +1882,7 @@ static struct l_dbus_message *rule_add(struct l_dbus *dbus,
rule->id = next_rule_id++;
rule->source_any = true;
rule->destination_any = true;
rule->delay = HWSIM_DELAY_MIN_MS;
if (!rules)
rules = l_queue_new();
@ -2160,6 +2168,37 @@ static struct l_dbus_message *rule_property_set_drop(
return l_dbus_message_new_method_return(message);
}
static bool rule_property_get_delay(struct l_dbus *dbus,
struct l_dbus_message *message,
struct l_dbus_message_builder *builder,
void *user_data)
{
struct hwsim_rule *rule = user_data;
l_dbus_message_builder_append_basic(builder, 'u', &rule->delay);
return true;
}
static struct l_dbus_message *rule_property_set_delay(
struct l_dbus *dbus,
struct l_dbus_message *message,
struct l_dbus_message_iter *new_value,
l_dbus_property_complete_cb_t complete,
void *user_data)
{
struct hwsim_rule *rule = user_data;
uint32_t val;
if (!l_dbus_message_iter_get_variant(new_value, "u", &val) ||
val < HWSIM_DELAY_MIN_MS)
return dbus_error_invalid_args(message);
rule->delay = val;
return l_dbus_message_new_method_return(message);
}
static void setup_rule_interface(struct l_dbus_interface *interface)
{
l_dbus_interface_method(interface, "Remove", 0, rule_remove, "", "");
@ -2192,6 +2231,10 @@ static void setup_rule_interface(struct l_dbus_interface *interface)
L_DBUS_PROPERTY_FLAG_AUTO_EMIT, "b",
rule_property_get_drop,
rule_property_set_drop);
l_dbus_interface_property(interface, "Delay",
L_DBUS_PROPERTY_FLAG_AUTO_EMIT, "u",
rule_property_get_delay,
rule_property_set_delay);
}
static void request_name_callback(struct l_dbus *dbus, bool success,