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hwsim: add MatchTimes property 

This integer property can be set to only match a rule a number of
times rather than all packets. This is useful for testing behavior
of a single dropped frame or ack. Once the rule has been matched
'MatchTimes' the rules will no longer be applied (unless set again
to some integer greater than zero).
This commit is contained in:
James Prestwood 2021-09-07 14:14:42 -07:00 committed by Denis Kenzior
parent 11271cd967
commit f2197fa06b
1 changed files with 42 additions and 0 deletions
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42
tools/hwsim.c
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@ -131,6 +131,7 @@ struct hwsim_rule {
int delay;
uint8_t *prefix;
size_t prefix_len;
int match_times; /* negative value indicates unused */
};
struct hwsim_support {
@ -1217,6 +1218,8 @@ static void process_rules(const struct radio_info_rec *src_radio,
}
/* Rule deemed to match frame, apply any changes */
if (rule->match_times == 0)
continue;
if (rule->signal)
frame->signal = rule->signal / 100;
@ -1225,6 +1228,9 @@ static void process_rules(const struct radio_info_rec *src_radio,
if (delay)
*delay = rule->delay;
if (rule->match_times > 0)
rule->match_times--;
}
}
@ -2008,6 +2014,7 @@ static struct l_dbus_message *rule_add(struct l_dbus *dbus,
rule->destination_any = true;
rule->delay = 0;
rule->enabled = false;
rule->match_times = -1;
if (!rules)
rules = l_queue_new();
@ -2412,6 +2419,37 @@ static struct l_dbus_message *rule_property_set_enabled(
return l_dbus_message_new_method_return(message);
}
static bool rule_property_get_match_times(struct l_dbus *dbus,
struct l_dbus_message *message,
struct l_dbus_message_builder *builder,
void *user_data)
{
struct hwsim_rule *rule = user_data;
uint16_t val = rule->match_times;
l_dbus_message_builder_append_basic(builder, 'q', &val);
return true;
}
static struct l_dbus_message *rule_property_set_match_times(
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;
uint16_t val;
if (!l_dbus_message_iter_get_variant(new_value, "q", &val))
return dbus_error_invalid_args(message);
rule->match_times = 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, "", "");
@ -2456,6 +2494,10 @@ static void setup_rule_interface(struct l_dbus_interface *interface)
L_DBUS_PROPERTY_FLAG_AUTO_EMIT, "b",
rule_property_get_enabled,
rule_property_set_enabled);
l_dbus_interface_property(interface, "MatchTimes",
L_DBUS_PROPERTY_FLAG_AUTO_EMIT, "q",
rule_property_get_match_times,
rule_property_set_match_times);
}
static void request_name_callback(struct l_dbus *dbus, bool success,