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monitor: parse RNR element

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James Prestwood 2022-08-09 14:04:46 -07:00 committed by Denis Kenzior
parent 5374e44354
commit e67169337f
1 changed files with 117 additions and 0 deletions
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117
monitor/nlmon.c
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@ -2278,6 +2278,121 @@ static void print_rsnx(unsigned int level, const char *label,
print_attr(level + 1, "SAE Hash-to-Element");
}
static void print_bss_parameters(unsigned int level, uint8_t parameters)
{
print_attr(level, "BSS Parameters");
if (test_bit(&parameters, 0))
print_attr(level + 1, "OCT Recommended");
if (test_bit(&parameters, 1))
print_attr(level + 1, "Same SSID");
if (test_bit(&parameters, 2))
print_attr(level + 1, "Multiple BSSID");
if (test_bit(&parameters, 3))
print_attr(level + 1, "Transmitted BSSID");
if (test_bit(&parameters, 4))
print_attr(level + 1, "2.4/5GHz Co-Located ESS member");
if (test_bit(&parameters, 5))
print_attr(level + 1, "Unsolicited Probe Responses Active");
if (test_bit(&parameters, 6))
print_attr(level + 1, "Co-Located AP");
}
static void print_reduced_neighbor_report(unsigned int level, const char *label,
const void *data, uint16_t size)
{
const uint8_t *ptr = data;
unsigned int field_count = 0;
print_attr(level, "%s", label);
if (size < 5) {
print_attr(level + 1, "error parsing");
return;
}
level++;
while (ptr < (uint8_t *)data + size) {
uint16_t hdr = l_get_le16(ptr);
uint8_t oper = l_get_u8(ptr + 2);
uint8_t chan = l_get_u8(ptr + 3);
uint8_t count = bit_field((uint8_t)(hdr & 0xff), 4, 4);
uint8_t type = bit_field((uint8_t)(hdr & 0xff), 0, 2);
uint8_t filtered = test_bit(&hdr, 2);
uint8_t info_size = (hdr & 0xff00) >> 8;
uint8_t i;
ptr += 4;
print_attr(level, "Field #%u", field_count);
/* TBTT Information Header */
print_attr(level + 1, "Info Field Type: %u", type);
print_attr(level + 1, "Filtered Neighbor AP: %u", filtered);
print_attr(level + 1, "Information Count: %u", count);
print_attr(level + 1, "Information Length: %u", info_size);
print_attr(level + 1, "Operating Class: %u", oper);
print_attr(level + 1, "Channel: %u", chan);
level++;
/* Information Set(s) */
for (i = 0; i <= count; i++) {
const uint8_t *info = ptr;
if (info + info_size > (uint8_t *)data + size ||
info_size == 0 || info_size == 3 ||
info_size == 4 || info_size == 10) {
print_attr(level + 1, "error parsing");
return;
}
print_attr(level, "Information Set #%u", i);
if (info_size >= 1)
print_attr(level + 1,
"Neighbor TBTT Offset: %u TU's",
l_get_u8(info++));
if (info_size >= 7) {
print_attr(level + 1, "BSSID: "MAC,
MAC_STR(info));
info += 6;
}
if (info_size == 5 || info_size == 6 ||
info_size >= 11) {
print_attr(level + 1, "Short SSID: %08x",
l_get_u32(info));
info += 4;
}
if (info_size == 2 || info_size == 6 ||
info_size == 8 || info_size == 9 ||
info_size >= 12)
print_bss_parameters(level + 1, *info++);
if (info_size == 9 || info_size >= 13)
print_attr(level + 1, "20 MHz PSD: %d",
(int8_t)*info++);
ptr += info_size;
}
level--;
field_count++;
}
}
static struct attr_entry ie_entry[] = {
{ IE_TYPE_SSID, "SSID",
ATTR_CUSTOM, { .function = print_ie_ssid } },
@ -2340,6 +2455,8 @@ static struct attr_entry ie_entry[] = {
ATTR_CUSTOM, { .function = print_fast_bss_transition } },
{ IE_TYPE_MOBILITY_DOMAIN, "Mobility Domain",
ATTR_CUSTOM, { .function = print_mobility_domain } },
{ IE_TYPE_REDUCED_NEIGHBOR_REPORT, "Reduced Neighbor Report",
ATTR_CUSTOM, { .function = print_reduced_neighbor_report } },
{ IE_TYPE_RSNX, "RSNX",
ATTR_CUSTOM, { .function = print_rsnx } },
{ },