* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
+/* \summary: IEEE 802.11 printer */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
if (ssid.length != 0) {
if (ssid.length > sizeof(ssid.ssid) - 1)
return 0;
- if (!ND_TTEST2(*(p + offset), ssid.length))
- return 0;
- if (length < ssid.length)
- return 0;
memcpy(&ssid.ssid, p + offset, ssid.length);
offset += ssid.length;
length -= ssid.length;
if (challenge.length >
sizeof(challenge.text) - 1)
return 0;
- if (!ND_TTEST2(*(p + offset), challenge.length))
- return 0;
- if (length < challenge.length)
- return 0;
memcpy(&challenge.text, p + offset,
challenge.length);
offset += challenge.length;
if (rates.length != 0) {
if (rates.length > sizeof rates.rate)
return 0;
- if (!ND_TTEST2(*(p + offset), rates.length))
- return 0;
- if (length < rates.length)
- return 0;
memcpy(&rates.rate, p + offset, rates.length);
offset += rates.length;
length -= rates.length;
offset += 3;
length -= 3;
- memcpy(tim.bitmap, p + (tim.length - 3),
- (tim.length - 3));
+ memcpy(tim.bitmap, p + offset, tim.length - 3);
offset += tim.length - 3;
length -= tim.length - 3;
/*
{
uint16_t fc;
u_int caplen, hdrlen, meshdrlen;
- const uint8_t *src, *dst;
+ struct lladdr_info src, dst;
int llc_hdrlen;
caplen = orig_caplen;
hdrlen = roundup2(hdrlen, 4);
if (ndo->ndo_Hflag && FC_TYPE(fc) == T_DATA &&
DATA_FRAME_IS_QOS(FC_SUBTYPE(fc))) {
+ if (caplen < hdrlen + 1) {
+ ND_PRINT((ndo, "%s", tstr));
+ return hdrlen;
+ }
meshdrlen = extract_mesh_header_length(p+hdrlen);
hdrlen += meshdrlen;
} else
caplen -= hdrlen;
p += hdrlen;
+ src.addr_string = etheraddr_string;
+ dst.addr_string = etheraddr_string;
switch (FC_TYPE(fc)) {
case T_MGMT:
- get_mgmt_src_dst_mac(p - hdrlen, &src, &dst);
- if (!mgmt_body_print(ndo, fc, src, p, length)) {
+ get_mgmt_src_dst_mac(p - hdrlen, &src.addr, &dst.addr);
+ if (!mgmt_body_print(ndo, fc, src.addr, p, length)) {
ND_PRINT((ndo, "%s", tstr));
return hdrlen;
}
return hdrlen;
}
} else {
- get_data_src_dst_mac(fc, p - hdrlen, &src, &dst);
- llc_hdrlen = llc_print(ndo, p, length, caplen, src, dst);
+ get_data_src_dst_mac(fc, p - hdrlen, &src.addr, &dst.addr);
+ llc_hdrlen = llc_print(ndo, p, length, caplen, &src, &dst);
if (llc_hdrlen < 0) {
/*
* Some kinds of LLC packet we cannot
* new fields does not count.
*/
uint8_t it_pad;
- uint16_t it_len; /* length of the whole
+ uint16_t it_len; /* length of the whole
* header in bytes, including
* it_version, it_pad,
* it_len, and data fields.
*/
- uint32_t it_present; /* A bitmap telling which
+ uint32_t it_present; /* A bitmap telling which
* fields are present. Set bit 31
* (0x80000000) to extend the
* bitmap by another 32 bits.
* by bitset of flag values, followed by the MCS rate index as
* in IEEE 802.11n.
*
+ *
+ * IEEE80211_RADIOTAP_AMPDU_STATUS u32, u16, u8, u8 unitless
+ *
+ * Contains the AMPDU information for the subframe.
+ *
+ * IEEE80211_RADIOTAP_VHT u16, u8, u8, u8[4], u8, u8, u16
+ *
+ * Contains VHT information about this frame.
+ *
* IEEE80211_RADIOTAP_VENDOR_NAMESPACE
* uint8_t OUI[3]
* uint8_t subspace
/* NB: gap for netbsd definitions */
IEEE80211_RADIOTAP_XCHANNEL = 18,
IEEE80211_RADIOTAP_MCS = 19,
+ IEEE80211_RADIOTAP_AMPDU_STATUS = 20,
+ IEEE80211_RADIOTAP_VHT = 21,
IEEE80211_RADIOTAP_NAMESPACE = 29,
IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30,
IEEE80211_RADIOTAP_EXT = 31
#define IEEE80211_RADIOTAP_MCS_HT_FORMAT_KNOWN 0x08
#define IEEE80211_RADIOTAP_MCS_FEC_TYPE_KNOWN 0x10
#define IEEE80211_RADIOTAP_MCS_STBC_KNOWN 0x20
+#define IEEE80211_RADIOTAP_MCS_NESS_KNOWN 0x40
+#define IEEE80211_RADIOTAP_MCS_NESS_BIT_1 0x80
/* For IEEE80211_RADIOTAP_MCS flags */
#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK 0x03
#define IEEE80211_RADIOTAP_MCS_STBC_2 2
#define IEEE80211_RADIOTAP_MCS_STBC_3 3
#define IEEE80211_RADIOTAP_MCS_STBC_SHIFT 5
-
-/* Radiotap state */
-/* This is used to save state when parsing/processing parameters */
-struct radiotap_state
-{
- uint32_t present;
-
- uint8_t rate;
-};
+#define IEEE80211_RADIOTAP_MCS_NESS_BIT_0 0x80
+
+/* For IEEE80211_RADIOTAP_AMPDU_STATUS */
+#define IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN 0x0001
+#define IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN 0x0002
+#define IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN 0x0004
+#define IEEE80211_RADIOTAP_AMPDU_IS_LAST 0x0008
+#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR 0x0010
+#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN 0x0020
+
+/* For IEEE80211_RADIOTAP_VHT known */
+#define IEEE80211_RADIOTAP_VHT_STBC_KNOWN 0x0001
+#define IEEE80211_RADIOTAP_VHT_TXOP_PS_NA_KNOWN 0x0002
+#define IEEE80211_RADIOTAP_VHT_GUARD_INTERVAL_KNOWN 0x0004
+#define IEEE80211_RADIOTAP_VHT_SGI_NSYM_DIS_KNOWN 0x0008
+#define IEEE80211_RADIOTAP_VHT_LDPC_EXTRA_OFDM_SYM_KNOWN 0x0010
+#define IEEE80211_RADIOTAP_VHT_BEAMFORMED_KNOWN 0x0020
+#define IEEE80211_RADIOTAP_VHT_BANDWIDTH_KNOWN 0x0040
+#define IEEE80211_RADIOTAP_VHT_GROUP_ID_KNOWN 0x0080
+#define IEEE80211_RADIOTAP_VHT_PARTIAL_AID_KNOWN 0x0100
+
+/* For IEEE80211_RADIOTAP_VHT flags */
+#define IEEE80211_RADIOTAP_VHT_STBC 0x01
+#define IEEE80211_RADIOTAP_VHT_TXOP_PS_NA 0x02
+#define IEEE80211_RADIOTAP_VHT_SHORT_GI 0x04
+#define IEEE80211_RADIOTAP_VHT_SGI_NSYM_M10_9 0x08
+#define IEEE80211_RADIOTAP_VHT_LDPC_EXTRA_OFDM_SYM 0x10
+#define IEEE80211_RADIOTAP_VHT_BEAMFORMED 0x20
+
+#define IEEE80211_RADIOTAP_VHT_BANDWIDTH_MASK 0x1f
+
+#define IEEE80211_RADIOTAP_VHT_NSS_MASK 0x0f
+#define IEEE80211_RADIOTAP_VHT_MCS_MASK 0xf0
+#define IEEE80211_RADIOTAP_VHT_MCS_SHIFT 4
+
+#define IEEE80211_RADIOTAP_CODING_LDPC_USERn 0x01
#define IEEE80211_CHAN_FHSS \
(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK)
static void
print_chaninfo(netdissect_options *ndo,
- int freq, int flags)
+ uint16_t freq, int flags, int presentflags)
{
ND_PRINT((ndo, "%u MHz", freq));
- if (IS_CHAN_FHSS(flags))
- ND_PRINT((ndo, " FHSS"));
- if (IS_CHAN_A(flags)) {
- if (flags & IEEE80211_CHAN_HALF)
- ND_PRINT((ndo, " 11a/10Mhz"));
- else if (flags & IEEE80211_CHAN_QUARTER)
- ND_PRINT((ndo, " 11a/5Mhz"));
- else
- ND_PRINT((ndo, " 11a"));
+ if (presentflags & (1 << IEEE80211_RADIOTAP_MCS)) {
+ /*
+ * We have the MCS field, so this is 11n, regardless
+ * of what the channel flags say.
+ */
+ ND_PRINT((ndo, " 11n"));
+ } else {
+ if (IS_CHAN_FHSS(flags))
+ ND_PRINT((ndo, " FHSS"));
+ if (IS_CHAN_A(flags)) {
+ if (flags & IEEE80211_CHAN_HALF)
+ ND_PRINT((ndo, " 11a/10Mhz"));
+ else if (flags & IEEE80211_CHAN_QUARTER)
+ ND_PRINT((ndo, " 11a/5Mhz"));
+ else
+ ND_PRINT((ndo, " 11a"));
+ }
+ if (IS_CHAN_ANYG(flags)) {
+ if (flags & IEEE80211_CHAN_HALF)
+ ND_PRINT((ndo, " 11g/10Mhz"));
+ else if (flags & IEEE80211_CHAN_QUARTER)
+ ND_PRINT((ndo, " 11g/5Mhz"));
+ else
+ ND_PRINT((ndo, " 11g"));
+ } else if (IS_CHAN_B(flags))
+ ND_PRINT((ndo, " 11b"));
+ if (flags & IEEE80211_CHAN_TURBO)
+ ND_PRINT((ndo, " Turbo"));
}
- if (IS_CHAN_ANYG(flags)) {
- if (flags & IEEE80211_CHAN_HALF)
- ND_PRINT((ndo, " 11g/10Mhz"));
- else if (flags & IEEE80211_CHAN_QUARTER)
- ND_PRINT((ndo, " 11g/5Mhz"));
- else
- ND_PRINT((ndo, " 11g"));
- } else if (IS_CHAN_B(flags))
- ND_PRINT((ndo, " 11b"));
- if (flags & IEEE80211_CHAN_TURBO)
- ND_PRINT((ndo, " Turbo"));
+ /*
+ * These apply to 11n.
+ */
if (flags & IEEE80211_CHAN_HT20)
ND_PRINT((ndo, " ht/20"));
else if (flags & IEEE80211_CHAN_HT40D)
static int
print_radiotap_field(netdissect_options *ndo,
- struct cpack_state *s, uint32_t bit, uint8_t *flags,
- struct radiotap_state *state, uint32_t presentflags)
+ struct cpack_state *s, uint32_t bit, uint8_t *flagsp,
+ uint32_t presentflags)
{
- union {
- int8_t i8;
- uint8_t u8;
- int16_t i16;
- uint16_t u16;
- uint32_t u32;
- uint64_t u64;
- } u, u2, u3, u4;
+ u_int i;
int rc;
switch (bit) {
- case IEEE80211_RADIOTAP_FLAGS:
- rc = cpack_uint8(s, &u.u8);
- if (rc != 0)
- break;
- *flags = u.u8;
- break;
- case IEEE80211_RADIOTAP_RATE:
- rc = cpack_uint8(s, &u.u8);
- if (rc != 0)
- break;
- /* Save state rate */
- state->rate = u.u8;
- break;
- case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
- case IEEE80211_RADIOTAP_DB_ANTNOISE:
- case IEEE80211_RADIOTAP_ANTENNA:
- rc = cpack_uint8(s, &u.u8);
- break;
- case IEEE80211_RADIOTAP_DBM_ANTSIGNAL:
- case IEEE80211_RADIOTAP_DBM_ANTNOISE:
- rc = cpack_int8(s, &u.i8);
- break;
- case IEEE80211_RADIOTAP_CHANNEL:
- rc = cpack_uint16(s, &u.u16);
- if (rc != 0)
- break;
- rc = cpack_uint16(s, &u2.u16);
- break;
- case IEEE80211_RADIOTAP_FHSS:
- case IEEE80211_RADIOTAP_LOCK_QUALITY:
- case IEEE80211_RADIOTAP_TX_ATTENUATION:
- case IEEE80211_RADIOTAP_RX_FLAGS:
- rc = cpack_uint16(s, &u.u16);
- break;
- case IEEE80211_RADIOTAP_DB_TX_ATTENUATION:
- rc = cpack_uint8(s, &u.u8);
- break;
- case IEEE80211_RADIOTAP_DBM_TX_POWER:
- rc = cpack_int8(s, &u.i8);
- break;
- case IEEE80211_RADIOTAP_TSFT:
- rc = cpack_uint64(s, &u.u64);
- break;
- case IEEE80211_RADIOTAP_XCHANNEL:
- rc = cpack_uint32(s, &u.u32);
- if (rc != 0)
- break;
- rc = cpack_uint16(s, &u2.u16);
- if (rc != 0)
- break;
- rc = cpack_uint8(s, &u3.u8);
- if (rc != 0)
- break;
- rc = cpack_uint8(s, &u4.u8);
- break;
- case IEEE80211_RADIOTAP_MCS:
- rc = cpack_uint8(s, &u.u8);
- if (rc != 0)
- break;
- rc = cpack_uint8(s, &u2.u8);
+ case IEEE80211_RADIOTAP_TSFT: {
+ uint64_t tsft;
+
+ rc = cpack_uint64(s, &tsft);
if (rc != 0)
- break;
- rc = cpack_uint8(s, &u3.u8);
+ goto trunc;
+ ND_PRINT((ndo, "%" PRIu64 "us tsft ", tsft));
break;
- case IEEE80211_RADIOTAP_VENDOR_NAMESPACE: {
- uint8_t vns[3];
- uint16_t length;
- uint8_t subspace;
-
- if ((cpack_align_and_reserve(s, 2)) == NULL) {
- rc = -1;
- break;
}
- rc = cpack_uint8(s, &vns[0]);
- if (rc != 0)
- break;
- rc = cpack_uint8(s, &vns[1]);
- if (rc != 0)
- break;
- rc = cpack_uint8(s, &vns[2]);
- if (rc != 0)
- break;
- rc = cpack_uint8(s, &subspace);
- if (rc != 0)
- break;
- rc = cpack_uint16(s, &length);
- if (rc != 0)
- break;
+ case IEEE80211_RADIOTAP_FLAGS: {
+ uint8_t flagsval;
- /* Skip up to length */
- s->c_next += length;
+ rc = cpack_uint8(s, &flagsval);
+ if (rc != 0)
+ goto trunc;
+ *flagsp = flagsval;
+ if (flagsval & IEEE80211_RADIOTAP_F_CFP)
+ ND_PRINT((ndo, "cfp "));
+ if (flagsval & IEEE80211_RADIOTAP_F_SHORTPRE)
+ ND_PRINT((ndo, "short preamble "));
+ if (flagsval & IEEE80211_RADIOTAP_F_WEP)
+ ND_PRINT((ndo, "wep "));
+ if (flagsval & IEEE80211_RADIOTAP_F_FRAG)
+ ND_PRINT((ndo, "fragmented "));
+ if (flagsval & IEEE80211_RADIOTAP_F_BADFCS)
+ ND_PRINT((ndo, "bad-fcs "));
break;
- }
- default:
- /* this bit indicates a field whose
- * size we do not know, so we cannot
- * proceed. Just print the bit number.
- */
- ND_PRINT((ndo, "[bit %u] ", bit));
- return -1;
- }
-
- if (rc != 0) {
- ND_PRINT((ndo, "%s", tstr));
- return rc;
- }
+ }
- /* Preserve the state present flags */
- state->present = presentflags;
+ case IEEE80211_RADIOTAP_RATE: {
+ uint8_t rate;
- switch (bit) {
- case IEEE80211_RADIOTAP_CHANNEL:
- /*
- * If CHANNEL and XCHANNEL are both present, skip
- * CHANNEL.
- */
- if (presentflags & (1 << IEEE80211_RADIOTAP_XCHANNEL))
- break;
- print_chaninfo(ndo, u.u16, u2.u16);
- break;
- case IEEE80211_RADIOTAP_FHSS:
- ND_PRINT((ndo, "fhset %d fhpat %d ", u.u16 & 0xff, (u.u16 >> 8) & 0xff));
- break;
- case IEEE80211_RADIOTAP_RATE:
+ rc = cpack_uint8(s, &rate);
+ if (rc != 0)
+ goto trunc;
/*
* XXX On FreeBSD rate & 0x80 means we have an MCS. On
* Linux and AirPcap it does not. (What about
* setting. Such rates do exist, e.g. 11n
* MCS 7 at 20 MHz with a long guard interval.
*/
- if (u.u8 >= 0x80 && u.u8 <= 0x8f) {
+ if (rate >= 0x80 && rate <= 0x8f) {
/*
* XXX - we don't know the channel width
* or guard interval length, so we can't
* information from Flags, at least on
* FreeBSD?
*/
- ND_PRINT((ndo, "MCS %u ", u.u8 & 0x7f));
+ ND_PRINT((ndo, "MCS %u ", rate & 0x7f));
} else
- ND_PRINT((ndo, "%2.1f Mb/s ", .5 * u.u8));
+ ND_PRINT((ndo, "%2.1f Mb/s ", .5 * rate));
break;
- case IEEE80211_RADIOTAP_DBM_ANTSIGNAL:
- ND_PRINT((ndo, "%ddBm signal ", u.i8));
+ }
+
+ case IEEE80211_RADIOTAP_CHANNEL: {
+ uint16_t frequency;
+ uint16_t flags;
+
+ rc = cpack_uint16(s, &frequency);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint16(s, &flags);
+ if (rc != 0)
+ goto trunc;
+ /*
+ * If CHANNEL and XCHANNEL are both present, skip
+ * CHANNEL.
+ */
+ if (presentflags & (1 << IEEE80211_RADIOTAP_XCHANNEL))
+ break;
+ print_chaninfo(ndo, frequency, flags, presentflags);
break;
- case IEEE80211_RADIOTAP_DBM_ANTNOISE:
- ND_PRINT((ndo, "%ddBm noise ", u.i8));
+ }
+
+ case IEEE80211_RADIOTAP_FHSS: {
+ uint8_t hopset;
+ uint8_t hoppat;
+
+ rc = cpack_uint8(s, &hopset);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(s, &hoppat);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT((ndo, "fhset %d fhpat %d ", hopset, hoppat));
break;
- case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
- ND_PRINT((ndo, "%ddB signal ", u.u8));
+ }
+
+ case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: {
+ int8_t dbm_antsignal;
+
+ rc = cpack_int8(s, &dbm_antsignal);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT((ndo, "%ddBm signal ", dbm_antsignal));
break;
- case IEEE80211_RADIOTAP_DB_ANTNOISE:
- ND_PRINT((ndo, "%ddB noise ", u.u8));
+ }
+
+ case IEEE80211_RADIOTAP_DBM_ANTNOISE: {
+ int8_t dbm_antnoise;
+
+ rc = cpack_int8(s, &dbm_antnoise);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT((ndo, "%ddBm noise ", dbm_antnoise));
break;
- case IEEE80211_RADIOTAP_LOCK_QUALITY:
- ND_PRINT((ndo, "%u sq ", u.u16));
+ }
+
+ case IEEE80211_RADIOTAP_LOCK_QUALITY: {
+ uint16_t lock_quality;
+
+ rc = cpack_uint16(s, &lock_quality);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT((ndo, "%u sq ", lock_quality));
break;
- case IEEE80211_RADIOTAP_TX_ATTENUATION:
- ND_PRINT((ndo, "%d tx power ", -(int)u.u16));
+ }
+
+ case IEEE80211_RADIOTAP_TX_ATTENUATION: {
+ uint16_t tx_attenuation;
+
+ rc = cpack_uint16(s, &tx_attenuation);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT((ndo, "%d tx power ", -(int)tx_attenuation));
break;
- case IEEE80211_RADIOTAP_DB_TX_ATTENUATION:
- ND_PRINT((ndo, "%ddB tx power ", -(int)u.u8));
+ }
+
+ case IEEE80211_RADIOTAP_DB_TX_ATTENUATION: {
+ uint8_t db_tx_attenuation;
+
+ rc = cpack_uint8(s, &db_tx_attenuation);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT((ndo, "%ddB tx attenuation ", -(int)db_tx_attenuation));
break;
- case IEEE80211_RADIOTAP_DBM_TX_POWER:
- ND_PRINT((ndo, "%ddBm tx power ", u.i8));
+ }
+
+ case IEEE80211_RADIOTAP_DBM_TX_POWER: {
+ int8_t dbm_tx_power;
+
+ rc = cpack_int8(s, &dbm_tx_power);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT((ndo, "%ddBm tx power ", dbm_tx_power));
break;
- case IEEE80211_RADIOTAP_FLAGS:
- if (u.u8 & IEEE80211_RADIOTAP_F_CFP)
- ND_PRINT((ndo, "cfp "));
- if (u.u8 & IEEE80211_RADIOTAP_F_SHORTPRE)
- ND_PRINT((ndo, "short preamble "));
- if (u.u8 & IEEE80211_RADIOTAP_F_WEP)
- ND_PRINT((ndo, "wep "));
- if (u.u8 & IEEE80211_RADIOTAP_F_FRAG)
- ND_PRINT((ndo, "fragmented "));
- if (u.u8 & IEEE80211_RADIOTAP_F_BADFCS)
- ND_PRINT((ndo, "bad-fcs "));
+ }
+
+ case IEEE80211_RADIOTAP_ANTENNA: {
+ uint8_t antenna;
+
+ rc = cpack_uint8(s, &antenna);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT((ndo, "antenna %u ", antenna));
break;
- case IEEE80211_RADIOTAP_ANTENNA:
- ND_PRINT((ndo, "antenna %d ", u.u8));
+ }
+
+ case IEEE80211_RADIOTAP_DB_ANTSIGNAL: {
+ uint8_t db_antsignal;
+
+ rc = cpack_uint8(s, &db_antsignal);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT((ndo, "%ddB signal ", db_antsignal));
break;
- case IEEE80211_RADIOTAP_TSFT:
- ND_PRINT((ndo, "%" PRIu64 "us tsft ", u.u64));
+ }
+
+ case IEEE80211_RADIOTAP_DB_ANTNOISE: {
+ uint8_t db_antnoise;
+
+ rc = cpack_uint8(s, &db_antnoise);
+ if (rc != 0)
+ goto trunc;
+ ND_PRINT((ndo, "%ddB noise ", db_antnoise));
break;
- case IEEE80211_RADIOTAP_RX_FLAGS:
+ }
+
+ case IEEE80211_RADIOTAP_RX_FLAGS: {
+ uint16_t rx_flags;
+
+ rc = cpack_uint16(s, &rx_flags);
+ if (rc != 0)
+ goto trunc;
/* Do nothing for now */
break;
- case IEEE80211_RADIOTAP_XCHANNEL:
- print_chaninfo(ndo, u2.u16, u.u32);
+ }
+
+ case IEEE80211_RADIOTAP_XCHANNEL: {
+ uint32_t flags;
+ uint16_t frequency;
+ uint8_t channel;
+ uint8_t maxpower;
+
+ rc = cpack_uint32(s, &flags);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint16(s, &frequency);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(s, &channel);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(s, &maxpower);
+ if (rc != 0)
+ goto trunc;
+ print_chaninfo(ndo, frequency, flags, presentflags);
break;
+ }
+
case IEEE80211_RADIOTAP_MCS: {
- static const char *bandwidth[4] = {
+ uint8_t known;
+ uint8_t flags;
+ uint8_t mcs_index;
+ static const char *ht_bandwidth[4] = {
"20 MHz",
"40 MHz",
"20 MHz (L)",
};
float htrate;
- if (u.u8 & IEEE80211_RADIOTAP_MCS_MCS_INDEX_KNOWN) {
+ rc = cpack_uint8(s, &known);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(s, &flags);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(s, &mcs_index);
+ if (rc != 0)
+ goto trunc;
+ if (known & IEEE80211_RADIOTAP_MCS_MCS_INDEX_KNOWN) {
/*
* We know the MCS index.
*/
- if (u3.u8 <= MAX_MCS_INDEX) {
+ if (mcs_index <= MAX_MCS_INDEX) {
/*
* And it's in-range.
*/
- if (u.u8 & (IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN|IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN)) {
+ if (known & (IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN|IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN)) {
/*
* And we know both the bandwidth and
* the guard interval, so we can look
*/
htrate =
ieee80211_float_htrates \
- [u3.u8] \
- [((u2.u8 & IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK) == IEEE80211_RADIOTAP_MCS_BANDWIDTH_40 ? 1 : 0)] \
- [((u2.u8 & IEEE80211_RADIOTAP_MCS_SHORT_GI) ? 1 : 0)];
+ [mcs_index] \
+ [((flags & IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK) == IEEE80211_RADIOTAP_MCS_BANDWIDTH_40 ? 1 : 0)] \
+ [((flags & IEEE80211_RADIOTAP_MCS_SHORT_GI) ? 1 : 0)];
} else {
/*
* We don't know both the bandwidth
* We have the rate.
* Print it.
*/
- ND_PRINT((ndo, "%.1f Mb/s MCS %u ", htrate, u3.u8));
+ ND_PRINT((ndo, "%.1f Mb/s MCS %u ", htrate, mcs_index));
} else {
/*
* We at least have the MCS index.
* Print it.
*/
- ND_PRINT((ndo, "MCS %u ", u3.u8));
+ ND_PRINT((ndo, "MCS %u ", mcs_index));
}
}
- if (u.u8 & IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN) {
+ if (known & IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN) {
ND_PRINT((ndo, "%s ",
- bandwidth[u2.u8 & IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK]));
+ ht_bandwidth[flags & IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK]));
}
- if (u.u8 & IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN) {
+ if (known & IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN) {
ND_PRINT((ndo, "%s GI ",
- (u2.u8 & IEEE80211_RADIOTAP_MCS_SHORT_GI) ?
- "short" : "lon"));
+ (flags & IEEE80211_RADIOTAP_MCS_SHORT_GI) ?
+ "short" : "long"));
}
- if (u.u8 & IEEE80211_RADIOTAP_MCS_HT_FORMAT_KNOWN) {
+ if (known & IEEE80211_RADIOTAP_MCS_HT_FORMAT_KNOWN) {
ND_PRINT((ndo, "%s ",
- (u2.u8 & IEEE80211_RADIOTAP_MCS_HT_GREENFIELD) ?
+ (flags & IEEE80211_RADIOTAP_MCS_HT_GREENFIELD) ?
"greenfield" : "mixed"));
}
- if (u.u8 & IEEE80211_RADIOTAP_MCS_FEC_TYPE_KNOWN) {
+ if (known & IEEE80211_RADIOTAP_MCS_FEC_TYPE_KNOWN) {
ND_PRINT((ndo, "%s FEC ",
- (u2.u8 & IEEE80211_RADIOTAP_MCS_FEC_LDPC) ?
+ (flags & IEEE80211_RADIOTAP_MCS_FEC_LDPC) ?
"LDPC" : "BCC"));
}
- if (u.u8 & IEEE80211_RADIOTAP_MCS_STBC_KNOWN) {
+ if (known & IEEE80211_RADIOTAP_MCS_STBC_KNOWN) {
ND_PRINT((ndo, "RX-STBC%u ",
- (u2.u8 & IEEE80211_RADIOTAP_MCS_STBC_MASK) >> IEEE80211_RADIOTAP_MCS_STBC_SHIFT));
+ (flags & IEEE80211_RADIOTAP_MCS_STBC_MASK) >> IEEE80211_RADIOTAP_MCS_STBC_SHIFT));
+ }
+ break;
+ }
+
+ case IEEE80211_RADIOTAP_AMPDU_STATUS: {
+ uint32_t reference_num;
+ uint16_t flags;
+ uint8_t delim_crc;
+ uint8_t reserved;
+
+ rc = cpack_uint32(s, &reference_num);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint16(s, &flags);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(s, &delim_crc);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(s, &reserved);
+ if (rc != 0)
+ goto trunc;
+ /* Do nothing for now */
+ break;
}
+ case IEEE80211_RADIOTAP_VHT: {
+ uint16_t known;
+ uint8_t flags;
+ uint8_t bandwidth;
+ uint8_t mcs_nss[4];
+ uint8_t coding;
+ uint8_t group_id;
+ uint16_t partial_aid;
+ static const char *vht_bandwidth[32] = {
+ "20 MHz",
+ "40 MHz",
+ "20 MHz (L)",
+ "20 MHz (U)",
+ "80 MHz",
+ "80 MHz (L)",
+ "80 MHz (U)",
+ "80 MHz (LL)",
+ "80 MHz (LU)",
+ "80 MHz (UL)",
+ "80 MHz (UU)",
+ "160 MHz",
+ "160 MHz (L)",
+ "160 MHz (U)",
+ "160 MHz (LL)",
+ "160 MHz (LU)",
+ "160 MHz (UL)",
+ "160 MHz (UU)",
+ "160 MHz (LLL)",
+ "160 MHz (LLU)",
+ "160 MHz (LUL)",
+ "160 MHz (UUU)",
+ "160 MHz (ULL)",
+ "160 MHz (ULU)",
+ "160 MHz (UUL)",
+ "160 MHz (UUU)",
+ "unknown (26)",
+ "unknown (27)",
+ "unknown (28)",
+ "unknown (29)",
+ "unknown (30)",
+ "unknown (31)"
+ };
+
+ rc = cpack_uint16(s, &known);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(s, &flags);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(s, &bandwidth);
+ if (rc != 0)
+ goto trunc;
+ for (i = 0; i < 4; i++) {
+ rc = cpack_uint8(s, &mcs_nss[i]);
+ if (rc != 0)
+ goto trunc;
+ }
+ rc = cpack_uint8(s, &coding);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint8(s, &group_id);
+ if (rc != 0)
+ goto trunc;
+ rc = cpack_uint16(s, &partial_aid);
+ if (rc != 0)
+ goto trunc;
+ for (i = 0; i < 4; i++) {
+ u_int nss, mcs;
+ nss = mcs_nss[i] & IEEE80211_RADIOTAP_VHT_NSS_MASK;
+ mcs = (mcs_nss[i] & IEEE80211_RADIOTAP_VHT_MCS_MASK) >> IEEE80211_RADIOTAP_VHT_MCS_SHIFT;
+
+ if (nss == 0)
+ continue;
+
+ ND_PRINT((ndo, "User %u MCS %u ", i, mcs));
+ ND_PRINT((ndo, "%s FEC ",
+ (coding & (IEEE80211_RADIOTAP_CODING_LDPC_USERn << i)) ?
+ "LDPC" : "BCC"));
+ }
+ if (known & IEEE80211_RADIOTAP_VHT_BANDWIDTH_KNOWN) {
+ ND_PRINT((ndo, "%s ",
+ vht_bandwidth[bandwidth & IEEE80211_RADIOTAP_VHT_BANDWIDTH_MASK]));
+ }
+ if (known & IEEE80211_RADIOTAP_VHT_GUARD_INTERVAL_KNOWN) {
+ ND_PRINT((ndo, "%s GI ",
+ (flags & IEEE80211_RADIOTAP_VHT_SHORT_GI) ?
+ "short" : "long"));
+ }
break;
}
+
+ default:
+ /* this bit indicates a field whose
+ * size we do not know, so we cannot
+ * proceed. Just print the bit number.
+ */
+ ND_PRINT((ndo, "[bit %u] ", bit));
+ return -1;
}
+
return 0;
+
+trunc:
+ ND_PRINT((ndo, "%s", tstr));
+ return rc;
}
-static u_int
-ieee802_11_radio_print(netdissect_options *ndo,
- const u_char *p, u_int length, u_int caplen)
+
+static int
+print_in_radiotap_namespace(netdissect_options *ndo,
+ struct cpack_state *s, uint8_t *flags,
+ uint32_t presentflags, int bit0)
{
#define BITNO_32(x) (((x) >> 16) ? 16 + BITNO_16((x) >> 16) : BITNO_16((x)))
#define BITNO_16(x) (((x) >> 8) ? 8 + BITNO_8((x) >> 8) : BITNO_8((x)))
#define BITNO_8(x) (((x) >> 4) ? 4 + BITNO_4((x) >> 4) : BITNO_4((x)))
#define BITNO_4(x) (((x) >> 2) ? 2 + BITNO_2((x) >> 2) : BITNO_2((x)))
#define BITNO_2(x) (((x) & 2) ? 1 : 0)
+ uint32_t present, next_present;
+ int bitno;
+ enum ieee80211_radiotap_type bit;
+ int rc;
+
+ for (present = presentflags; present; present = next_present) {
+ /*
+ * Clear the least significant bit that is set.
+ */
+ next_present = present & (present - 1);
+
+ /*
+ * Get the bit number, within this presence word,
+ * of the remaining least significant bit that
+ * is set.
+ */
+ bitno = BITNO_32(present ^ next_present);
+
+ /*
+ * Stop if this is one of the "same meaning
+ * in all presence flags" bits.
+ */
+ if (bitno >= IEEE80211_RADIOTAP_NAMESPACE)
+ break;
+
+ /*
+ * Get the radiotap bit number of that bit.
+ */
+ bit = (enum ieee80211_radiotap_type)(bit0 + bitno);
+
+ rc = print_radiotap_field(ndo, s, bit, flags, presentflags);
+ if (rc != 0)
+ return rc;
+ }
+
+ return 0;
+}
+
+u_int
+ieee802_11_radio_print(netdissect_options *ndo,
+ const u_char *p, u_int length, u_int caplen)
+{
#define BIT(n) (1U << n)
#define IS_EXTENDED(__p) \
(EXTRACT_LE_32BITS(__p) & BIT(IEEE80211_RADIOTAP_EXT)) != 0
struct cpack_state cpacker;
const struct ieee80211_radiotap_header *hdr;
- uint32_t present, next_present;
- uint32_t presentflags = 0;
+ uint32_t presentflags;
const uint32_t *presentp, *last_presentp;
- enum ieee80211_radiotap_type bit;
+ int vendor_namespace;
+ uint8_t vendor_oui[3];
+ uint8_t vendor_subnamespace;
+ uint16_t skip_length;
int bit0;
u_int len;
uint8_t flags;
int pad;
u_int fcslen;
- struct radiotap_state state;
if (caplen < sizeof(*hdr)) {
ND_PRINT((ndo, "%s", tstr));
hdr = (const struct ieee80211_radiotap_header *)p;
len = EXTRACT_LE_16BITS(&hdr->it_len);
+ if (len < sizeof(*hdr)) {
+ /*
+ * The length is the length of the entire header, so
+ * it must be as large as the fixed-length part of
+ * the header.
+ */
+ ND_PRINT((ndo, "%s", tstr));
+ return caplen;
+ }
+ /*
+ * If we don't have the entire radiotap header, just give up.
+ */
if (caplen < len) {
ND_PRINT((ndo, "%s", tstr));
return caplen;
cpack_init(&cpacker, (const uint8_t *)hdr, len); /* align against header start */
cpack_advance(&cpacker, sizeof(*hdr)); /* includes the 1st bitmap */
for (last_presentp = &hdr->it_present;
- IS_EXTENDED(last_presentp) &&
- (const u_char*)(last_presentp + 1) <= p + len;
+ (const u_char*)(last_presentp + 1) <= p + len &&
+ IS_EXTENDED(last_presentp);
last_presentp++)
cpack_advance(&cpacker, sizeof(hdr->it_present)); /* more bitmaps */
/* are there more bitmap extensions than bytes in header? */
- if (IS_EXTENDED(last_presentp)) {
+ if ((const u_char*)(last_presentp + 1) > p + len) {
ND_PRINT((ndo, "%s", tstr));
return caplen;
}
+ /*
+ * Start out at the beginning of the default radiotap namespace.
+ */
+ bit0 = 0;
+ vendor_namespace = 0;
+ memset(vendor_oui, 0, 3);
+ vendor_subnamespace = 0;
+ skip_length = 0;
/* Assume no flags */
flags = 0;
/* Assume no Atheros padding between 802.11 header and body */
pad = 0;
/* Assume no FCS at end of frame */
fcslen = 0;
- for (bit0 = 0, presentp = &hdr->it_present; presentp <= last_presentp;
- presentp++, bit0 += 32) {
+ for (presentp = &hdr->it_present; presentp <= last_presentp;
+ presentp++) {
presentflags = EXTRACT_LE_32BITS(presentp);
- /* Clear state. */
- memset(&state, 0, sizeof(state));
+ /*
+ * If this is a vendor namespace, we don't handle it.
+ */
+ if (vendor_namespace) {
+ /*
+ * Skip past the stuff we don't understand.
+ * If we add support for any vendor namespaces,
+ * it'd be added here; use vendor_oui and
+ * vendor_subnamespace to interpret the fields.
+ */
+ if (cpack_advance(&cpacker, skip_length) != 0) {
+ /*
+ * Ran out of space in the packet.
+ */
+ break;
+ }
+
+ /*
+ * We've skipped it all; nothing more to
+ * skip.
+ */
+ skip_length = 0;
+ } else {
+ if (print_in_radiotap_namespace(ndo, &cpacker,
+ &flags, presentflags, bit0) != 0) {
+ /*
+ * Fatal error - can't process anything
+ * more in the radiotap header.
+ */
+ break;
+ }
+ }
+
+ /*
+ * Handle the namespace switch bits; we've already handled
+ * the extension bit in all but the last word above.
+ */
+ switch (presentflags &
+ (BIT(IEEE80211_RADIOTAP_NAMESPACE)|BIT(IEEE80211_RADIOTAP_VENDOR_NAMESPACE))) {
- for (present = EXTRACT_LE_32BITS(presentp); present;
- present = next_present) {
- /* clear the least significant bit that is set */
- next_present = present & (present - 1);
+ case 0:
+ /*
+ * We're not changing namespaces.
+ * advance to the next 32 bits in the current
+ * namespace.
+ */
+ bit0 += 32;
+ break;
- /* extract the least significant bit that is set */
- bit = (enum ieee80211_radiotap_type)
- (bit0 + BITNO_32(present ^ next_present));
+ case BIT(IEEE80211_RADIOTAP_NAMESPACE):
+ /*
+ * We're switching to the radiotap namespace.
+ * Reset the presence-bitmap index to 0, and
+ * reset the namespace to the default radiotap
+ * namespace.
+ */
+ bit0 = 0;
+ vendor_namespace = 0;
+ memset(vendor_oui, 0, 3);
+ vendor_subnamespace = 0;
+ skip_length = 0;
+ break;
+
+ case BIT(IEEE80211_RADIOTAP_VENDOR_NAMESPACE):
+ /*
+ * We're switching to a vendor namespace.
+ * Reset the presence-bitmap index to 0,
+ * note that we're in a vendor namespace,
+ * and fetch the fields of the Vendor Namespace
+ * item.
+ */
+ bit0 = 0;
+ vendor_namespace = 1;
+ if ((cpack_align_and_reserve(&cpacker, 2)) == NULL) {
+ ND_PRINT((ndo, "%s", tstr));
+ break;
+ }
+ if (cpack_uint8(&cpacker, &vendor_oui[0]) != 0) {
+ ND_PRINT((ndo, "%s", tstr));
+ break;
+ }
+ if (cpack_uint8(&cpacker, &vendor_oui[1]) != 0) {
+ ND_PRINT((ndo, "%s", tstr));
+ break;
+ }
+ if (cpack_uint8(&cpacker, &vendor_oui[2]) != 0) {
+ ND_PRINT((ndo, "%s", tstr));
+ break;
+ }
+ if (cpack_uint8(&cpacker, &vendor_subnamespace) != 0) {
+ ND_PRINT((ndo, "%s", tstr));
+ break;
+ }
+ if (cpack_uint16(&cpacker, &skip_length) != 0) {
+ ND_PRINT((ndo, "%s", tstr));
+ break;
+ }
+ break;
- if (print_radiotap_field(ndo, &cpacker, bit, &flags, &state, presentflags) != 0)
- goto out;
+ default:
+ /*
+ * Illegal combination. The behavior in this
+ * case is undefined by the radiotap spec; we
+ * just ignore both bits.
+ */
+ break;
}
}
-out:
if (flags & IEEE80211_RADIOTAP_F_DATAPAD)
pad = 1; /* Atheros padding */
if (flags & IEEE80211_RADIOTAP_F_FCS)
projects / tcpdump / blobdiff