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monitor: Add support for decoding frame types

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This commit is contained in:
Marcel Holtmann 2014-08-10 01:01:47 -07:00
parent c50d624e55
commit bbca35c57b
1 changed files with 118 additions and 4 deletions
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122
monitor/nlmon.c
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@ -165,6 +165,86 @@ static void print_ie(unsigned int level, const char *label,
}
}
static void print_frame_type(unsigned int level, const char *label,
const void *data, uint16_t size)
{
uint16_t frame_type = *((uint16_t *) data);
uint8_t type = frame_type & 0x000c;
uint8_t subtype = (frame_type & 0x00f0) >> 4;
const char *str;
print_attr(level, "%s: 0x%04x", label, frame_type);
switch (type) {
case 0x00:
str = "Management";
break;
default:
str = "Reserved";
break;
}
print_attr(level + 1, "Type: %s (%u)", str, type);
switch (subtype) {
case 0x00:
str = "Association request";
break;
case 0x01:
str = "Association response";
break;
case 0x02:
str = "Reassociation request";
break;
case 0x03:
str = "Reassociation response";
break;
case 0x04:
str = "Probe request";
break;
case 0x05:
str = "Probe response";
break;
case 0x06:
str = "Timingd Advertisement";
break;
case 0x08:
str = "Beacon";
break;
case 0x09:
str = "ATIM";
break;
case 0x0a:
str = "Disassociation";
break;
case 0x0b:
str = "Authentication";
break;
case 0x0c:
str = "Deauthentication";
break;
case 0x0d:
str = "Action";
break;
case 0x0e:
str = "Action No Ack";
break;
default:
str = "Reserved";
break;
}
print_attr(level + 1, "Subtype: %s (%u)", str, subtype);
}
static void print_frame(unsigned int level, const char *label,
const void *data, uint16_t size)
{
print_attr(level, "%s: len %u", label, size);
print_frame_type(level + 1, "Frame Type", data, 2);
print_hexdump(level + 1, data, size);
}
typedef void (*attr_func_t) (unsigned int level, const char *label,
const void *data, uint16_t size);
enum attr_type {
@ -238,6 +318,37 @@ static const struct attr_entry bss_table[] = {
{ }
};
static const struct attr_entry frame_types_field_table[] = {
{ NL80211_ATTR_FRAME_TYPE,
"Frame Type", ATTR_CUSTOM,
{ .function = print_frame_type } },
{ }
};
static const struct attr_entry frame_types_table[] = {
{ NL80211_IFTYPE_ADHOC, "Ad-hoc", ATTR_NESTED,
{ frame_types_field_table } },
{ NL80211_IFTYPE_STATION, "Station", ATTR_NESTED,
{ frame_types_field_table } },
{ NL80211_IFTYPE_AP, "AP", ATTR_NESTED,
{ frame_types_field_table } },
{ NL80211_IFTYPE_AP_VLAN, "AP-VLAN", ATTR_NESTED,
{ frame_types_field_table } },
{ NL80211_IFTYPE_WDS, "WDS", ATTR_NESTED,
{ frame_types_field_table } },
{ NL80211_IFTYPE_MONITOR, "Monitor", ATTR_NESTED,
{ frame_types_field_table } },
{ NL80211_IFTYPE_MESH_POINT, "Mesh-point", ATTR_NESTED,
{ frame_types_field_table } },
{ NL80211_IFTYPE_P2P_CLIENT, "P2P-Client", ATTR_NESTED,
{ frame_types_field_table } },
{ NL80211_IFTYPE_P2P_GO, "P2P-GO", ATTR_NESTED,
{ frame_types_field_table } },
{ NL80211_IFTYPE_P2P_DEVICE, "P2P-Device", ATTR_NESTED,
{ frame_types_field_table } },
{ }
};
static const struct attr_entry attr_table[] = {
{ NL80211_ATTR_WIPHY,
"Wiphy", ATTR_U32 },
@ -345,7 +456,7 @@ static const struct attr_entry attr_table[] = {
"Supported Commands", ATTR_ARRAY,
{ .array_type = ATTR_U32 } },
{ NL80211_ATTR_FRAME,
"Frame", ATTR_BINARY },
"Frame", ATTR_CUSTOM, { .function = print_frame } },
{ NL80211_ATTR_SSID,
"SSID", ATTR_BINARY },
{ NL80211_ATTR_AUTH_TYPE,
@ -441,11 +552,14 @@ static const struct attr_entry attr_table[] = {
{ NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
"Wiphy TX Power Level", ATTR_U32 },
{ NL80211_ATTR_TX_FRAME_TYPES,
"TX Frame Types" },
"TX Frame Types", ATTR_NESTED,
{ frame_types_table } },
{ NL80211_ATTR_RX_FRAME_TYPES,
"RX Frame Types" },
"RX Frame Types", ATTR_NESTED,
{ frame_types_table } },
{ NL80211_ATTR_FRAME_TYPE,
"Frame Type", ATTR_U16 },
"Frame Type", ATTR_CUSTOM,
{ .function = print_frame_type } },
{ NL80211_ATTR_CONTROL_PORT_ETHERTYPE,
"Control Port Ethertype", ATTR_FLAG_OR_U16 },
{ NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT,