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monitor: Decode OUI portion of vendor specific information elements

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This commit is contained in:
Marcel Holtmann 2014-08-10 13:21:49 -07:00
parent 05c6ecbeff
commit d8ed30e13b
1 changed files with 56 additions and 2 deletions
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58
monitor/nlmon.c
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@ -148,6 +148,53 @@ static void print_hexdump(unsigned int level,
} }
} }
static const struct {
const uint8_t oui[3];
const char *str;
} oui_table[] = {
{ { 0x00, 0x03, 0x7f }, "Atheros" },
{ { 0x00, 0x03, 0x93 }, "Apple" },
{ { 0x00, 0x0f, 0xac }, "IEEE 802.11" },
{ { 0x00, 0x10, 0x18 }, "Broadcom" },
{ { 0x00, 0x17, 0xf2 }, "Apple" },
{ { 0x00, 0x40, 0x96 }, "Cisco Systems" },
{ { 0x00, 0x50, 0xf2 }, "Microsoft" },
{ { 0x00, 0x90, 0x4c }, "Epigram" },
{ { 0x50, 0x6f, 0x9a }, "Wi-Fi Alliance" },
{ }
};
static void print_ie_vendor(unsigned int level,
const void *data, uint16_t size)
{
const uint8_t *oui = data;
const char *str = NULL;
unsigned int i;
print_attr(level, "Vendor specific: len %u", size);
if (size < 3) {
print_hexdump(level + 1, data, size);
return;
}
for (i = 0; oui_table[i].str; i++) {
if (!memcmp(oui_table[i].oui, oui, 3)) {
str = oui_table[i].str;
break;
}
}
if (str)
print_attr(level + 1, "%s (%02x:%02x:%02x)", str,
oui[0], oui[1], oui[2]);
else
print_attr(level + 1, "%02x:%02x:%02x",
oui[0], oui[1], oui[2]);
print_hexdump(level + 1, data + 3, size - 3);
}
static void print_ie(unsigned int level, const char *label, static void print_ie(unsigned int level, const char *label,
const void *data, uint16_t size) const void *data, uint16_t size)
{ {
@ -160,8 +207,15 @@ static void print_ie(unsigned int level, const char *label,
while (ie_tlv_iter_next(&iter)) { while (ie_tlv_iter_next(&iter)) {
uint8_t tag = ie_tlv_iter_get_tag(&iter); uint8_t tag = ie_tlv_iter_get_tag(&iter);
print_attr(level + 1, "Tag %u: len %u", tag, iter.len); switch (tag) {
print_hexdump(level + 2, iter.data, iter.len); case IE_TYPE_VENDOR_SPECIFIC:
print_ie_vendor(level + 1, iter.data, iter.len);
break;
default:
print_attr(level + 1, "Tag %u: len %u", tag, iter.len);
print_hexdump(level + 2, iter.data, iter.len);
break;
}
} }
} }