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hwsim: Add Rule.Drop property

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Add a way to have matching packets dropped by the hwsim medium.
This commit is contained in:
Andrew Zaborowski 2017-08-23 18:18:48 +02:00 committed by Denis Kenzior
parent 07b04e180f
commit bf86081eba
1 changed files with 50 additions and 5 deletions
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55
tools/hwsim.c
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@ -99,6 +99,7 @@ struct hwsim_rule {
bool source_any : 1;
bool destination_any : 1;
bool bidirectional : 1;
bool drop : 1;
uint32_t frequency;
int priority;
int signal;
@ -1043,7 +1044,7 @@ 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)
struct hwsim_frame *frame, bool *drop)
{
const struct l_queue_entry *rule_entry;
@ -1084,6 +1085,8 @@ static void process_rules(const struct radio_info_rec *src_radio,
if (rule->signal)
frame->signal = rule->signal / 100;
*drop = rule->drop;
}
}
@ -1163,10 +1166,13 @@ static void hwsim_frame_unref(struct hwsim_frame *frame)
*/
if (!(frame->flags & HWSIM_TX_CTL_NO_ACK) && frame->acked) {
frame->flags |= HWSIM_TX_STAT_ACK;
bool drop = false;
process_rules(frame->ack_radio, frame->src_radio,
frame);
frame, &drop);
if (!drop)
frame->flags |= HWSIM_TX_STAT_ACK;
}
send_frame_tx_info(frame);
@ -1222,14 +1228,16 @@ static bool interface_info_match_dst(const void *a, const void *b)
static void process_frame(struct hwsim_frame *frame)
{
const struct l_queue_entry *entry;
bool drop_mcast = false;
if (is_multicast_addr(frame->dst_ether_addr))
process_rules(frame->src_radio, NULL, frame);
process_rules(frame->src_radio, NULL, frame, &drop_mcast);
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;
if (radio == frame->src_radio)
continue;
@ -1262,7 +1270,10 @@ static void process_frame(struct hwsim_frame *frame)
continue;
}
process_rules(frame->src_radio, radio, frame);
process_rules(frame->src_radio, radio, frame, &drop);
if (drop)
continue;
send_info = l_new(struct send_frame_info, 1);
send_info->radio = radio;
@ -1932,6 +1943,37 @@ static struct l_dbus_message *rule_property_set_signal(struct l_dbus *dbus,
return l_dbus_message_new_method_return(message);
}
static bool rule_property_get_drop(struct l_dbus *dbus,
struct l_dbus_message *message,
struct l_dbus_message_builder *builder,
void *user_data)
{
struct hwsim_rule *rule = user_data;
bool bval = rule->drop;
l_dbus_message_builder_append_basic(builder, 'b', &bval);
return true;
}
static struct l_dbus_message *rule_property_set_drop(
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;
bool bval;
if (!l_dbus_message_iter_get_variant(new_value, "b", &bval))
return dbus_error_invalid_args(message);
rule->drop = bval;
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, "", "");
@ -1954,6 +1996,9 @@ static void setup_rule_interface(struct l_dbus_interface *interface)
l_dbus_interface_property(interface, "SignalStrength", 0, "n",
rule_property_get_signal,
rule_property_set_signal);
l_dbus_interface_property(interface, "Drop", 0, "b",
rule_property_get_drop,
rule_property_set_drop);
}
static void request_name_callback(struct l_dbus *dbus, bool success,