svn commit: r195684 - head/contrib/tcpdump
Sam Leffler
sam at FreeBSD.org
Tue Jul 14 17:11:07 UTC 2009
Author: sam
Date: Tue Jul 14 17:11:06 2009
New Revision: 195684
URL: http://svn.freebsd.org/changeset/base/195684
Log:
Updates, mostly to add 802.11s support:
o add missing Status and Reason codes
o parse/display Action frames
o parse/display Mesh data frames
o parse/display BA frames
Reviewed by: rpaulo
Approved by: re (kib)
Modified:
head/contrib/tcpdump/ieee802_11.h
head/contrib/tcpdump/print-802_11.c
Modified: head/contrib/tcpdump/ieee802_11.h
==============================================================================
--- head/contrib/tcpdump/ieee802_11.h Tue Jul 14 15:42:13 2009 (r195683)
+++ head/contrib/tcpdump/ieee802_11.h Tue Jul 14 17:11:06 2009 (r195684)
@@ -69,12 +69,13 @@
#define ST_DISASSOC 0xA
#define ST_AUTH 0xB
#define ST_DEAUTH 0xC
-/* RESERVED 0xD */
+#define ST_ACTION 0xD
/* RESERVED 0xE */
/* RESERVED 0xF */
#define CTRL_BAR 0x8
+#define CTRL_BA 0x9
#define CTRL_PS_POLL 0xA
#define CTRL_RTS 0xB
#define CTRL_CTS 0xC
@@ -315,6 +316,15 @@ struct ctrl_end_ack_t {
#define CTRL_END_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)
+struct ctrl_ba_t {
+ u_int16_t fc;
+ u_int16_t duration;
+ u_int8_t ra[6];
+ u_int8_t fcs[4];
+};
+
+#define CTRL_BA_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)
+
struct ctrl_bar_t {
u_int16_t fc;
u_int16_t dur;
@@ -329,6 +339,15 @@ struct ctrl_bar_t {
IEEE802_11_RA_LEN+IEEE802_11_TA_LEN+\
IEEE802_11_CTL_LEN+IEEE802_11_SEQ_LEN)
+struct meshcntl_t {
+ u_int8_t flags;
+ u_int8_t ttl;
+ u_int8_t seq[4];
+ u_int8_t addr4[6];
+ u_int8_t addr5[6];
+ u_int8_t addr6[6];
+};
+
#define IV_IV(iv) ((iv) & 0xFFFFFF)
#define IV_PAD(iv) (((iv) >> 24) & 0x3F)
#define IV_KEYID(iv) (((iv) >> 30) & 0x03)
Modified: head/contrib/tcpdump/print-802_11.c
==============================================================================
--- head/contrib/tcpdump/print-802_11.c Tue Jul 14 15:42:13 2009 (r195683)
+++ head/contrib/tcpdump/print-802_11.c Tue Jul 14 17:11:06 2009 (r195684)
@@ -121,41 +121,154 @@ static const char *auth_alg_text[]={"Ope
#define NUM_AUTH_ALGS (sizeof auth_alg_text / sizeof auth_alg_text[0])
static const char *status_text[] = {
- "Succesful", /* 0 */
- "Unspecified failure", /* 1 */
- "Reserved", /* 2 */
- "Reserved", /* 3 */
- "Reserved", /* 4 */
- "Reserved", /* 5 */
- "Reserved", /* 6 */
- "Reserved", /* 7 */
- "Reserved", /* 8 */
- "Reserved", /* 9 */
- "Cannot Support all requested capabilities in the Capability Information field", /* 10 */
- "Reassociation denied due to inability to confirm that association exists", /* 11 */
- "Association denied due to reason outside the scope of the standard", /* 12 */
- "Responding station does not support the specified authentication algorithm ", /* 13 */
- "Received an Authentication frame with authentication transaction " \
- "sequence number out of expected sequence", /* 14 */
- "Authentication rejected because of challenge failure", /* 15 */
- "Authentication rejected due to timeout waiting for next frame in sequence", /* 16 */
- "Association denied because AP is unable to handle additional associated stations", /* 17 */
- "Association denied due to requesting station not supporting all of the " \
- "data rates in BSSBasicRateSet parameter", /* 18 */
+ "Succesful", /* 0 */
+ "Unspecified failure", /* 1 */
+ "Reserved", /* 2 */
+ "Reserved", /* 3 */
+ "Reserved", /* 4 */
+ "Reserved", /* 5 */
+ "Reserved", /* 6 */
+ "Reserved", /* 7 */
+ "Reserved", /* 8 */
+ "Reserved", /* 9 */
+ "Cannot Support all requested capabilities in the Capability "
+ "Information field", /* 10 */
+ "Reassociation denied due to inability to confirm that association "
+ "exists", /* 11 */
+ "Association denied due to reason outside the scope of the "
+ "standard", /* 12 */
+ "Responding station does not support the specified authentication "
+ "algorithm ", /* 13 */
+ "Received an Authentication frame with authentication transaction "
+ "sequence number out of expected sequence", /* 14 */
+ "Authentication rejected because of challenge failure", /* 15 */
+ "Authentication rejected due to timeout waiting for next frame in "
+ "sequence", /* 16 */
+ "Association denied because AP is unable to handle additional"
+ "associated stations", /* 17 */
+ "Association denied due to requesting station not supporting all of "
+ "the data rates in BSSBasicRateSet parameter", /* 18 */
+ "Association denied due to requesting station not supporting "
+ "short preamble operation", /* 19 */
+ "Association denied due to requesting station not supporting "
+ "PBCC encoding", /* 20 */
+ "Association denied due to requesting station not supporting "
+ "channel agility", /* 21 */
+ "Association request rejected because Spectrum Management "
+ "capability is required", /* 22 */
+ "Association request rejected because the information in the "
+ "Power Capability element is unacceptable", /* 23 */
+ "Association request rejected because the information in the "
+ "Supported Channels element is unacceptable", /* 24 */
+ "Association denied due to requesting station not supporting "
+ "short slot operation", /* 25 */
+ "Association denied due to requesting station not supporting "
+ "DSSS-OFDM operation", /* 26 */
+ "Association denied because the requested STA does not support HT "
+ "features", /* 27 */
+ "Reserved", /* 28 */
+ "Association denied because the requested STA does not support "
+ "the PCO transition time required by the AP", /* 29 */
+ "Reserved", /* 30 */
+ "Reserved", /* 31 */
+ "Unspecified, QoS-related failure", /* 32 */
+ "Association denied due to QAP having insufficient bandwidth "
+ "to handle another QSTA", /* 33 */
+ "Association denied due to excessive frame loss rates and/or "
+ "poor conditions on current operating channel", /* 34 */
+ "Association (with QBSS) denied due to requesting station not "
+ "supporting the QoS facility", /* 35 */
+ "Association denied due to requesting station not supporting "
+ "Block Ack", /* 36 */
+ "The request has been declined", /* 37 */
+ "The request has not been successful as one or more parameters "
+ "have invalid values", /* 38 */
+ "The TS has not been created because the request cannot be honored. "
+ "However, a suggested TSPEC is provided so that the initiating QSTA"
+ "may attempt to set another TS with the suggested changes to the "
+ "TSPEC", /* 39 */
+ "Invalid Information Element", /* 40 */
+ "Group Cipher is not valid", /* 41 */
+ "Pairwise Cipher is not valid", /* 42 */
+ "AKMP is not valid", /* 43 */
+ "Unsupported RSN IE version", /* 44 */
+ "Invalid RSN IE Capabilities", /* 45 */
+ "Cipher suite is rejected per security policy", /* 46 */
+ "The TS has not been created. However, the HC may be capable of "
+ "creating a TS, in response to a request, after the time indicated "
+ "in the TS Delay element", /* 47 */
+ "Direct Link is not allowed in the BSS by policy", /* 48 */
+ "Destination STA is not present within this QBSS.", /* 49 */
+ "The Destination STA is not a QSTA.", /* 50 */
+
};
#define NUM_STATUSES (sizeof status_text / sizeof status_text[0])
static const char *reason_text[] = {
- "Reserved", /* 0 */
- "Unspecified reason", /* 1 */
- "Previous authentication no longer valid", /* 2 */
- "Deauthenticated because sending station is leaving (or has left) IBSS or ESS", /* 3 */
- "Disassociated due to inactivity", /* 4 */
- "Disassociated because AP is unable to handle all currently associated stations", /* 5 */
+ "Reserved", /* 0 */
+ "Unspecified reason", /* 1 */
+ "Previous authentication no longer valid", /* 2 */
+ "Deauthenticated because sending station is leaving (or has left) "
+ "IBSS or ESS", /* 3 */
+ "Disassociated due to inactivity", /* 4 */
+ "Disassociated because AP is unable to handle all currently "
+ " associated stations", /* 5 */
"Class 2 frame received from nonauthenticated station", /* 6 */
- "Class 3 frame received from nonassociated station", /* 7 */
- "Disassociated because sending station is leaving (or has left) BSS", /* 8 */
- "Station requesting (re)association is not authenticated with responding station", /* 9 */
+ "Class 3 frame received from nonassociated station", /* 7 */
+ "Disassociated because sending station is leaving "
+ "(or has left) BSS", /* 8 */
+ "Station requesting (re)association is not authenticated with "
+ "responding station", /* 9 */
+ "Disassociated because the information in the Power Capability "
+ "element is unacceptable", /* 10 */
+ "Disassociated because the information in the SupportedChannels "
+ "element is unacceptable", /* 11 */
+ "Invalid Information Element", /* 12 */
+ "Reserved", /* 13 */
+ "Michael MIC failure", /* 14 */
+ "4-Way Handshake timeout", /* 15 */
+ "Group key update timeout", /* 16 */
+ "Information element in 4-Way Handshake different from (Re)Association"
+ "Request/Probe Response/Beacon", /* 17 */
+ "Group Cipher is not valid", /* 18 */
+ "AKMP is not valid", /* 20 */
+ "Unsupported RSN IE version", /* 21 */
+ "Invalid RSN IE Capabilities", /* 22 */
+ "IEEE 802.1X Authentication failed", /* 23 */
+ "Cipher suite is rejected per security policy", /* 24 */
+ "Reserved", /* 25 */
+ "Reserved", /* 26 */
+ "Reserved", /* 27 */
+ "Reserved", /* 28 */
+ "Reserved", /* 29 */
+ "Reserved", /* 30 */
+ "TS deleted because QoS AP lacks sufficient bandwidth for this "
+ "QoS STA due to a change in BSS service characteristics or "
+ "operational mode (e.g. an HT BSS change from 40 MHz channel "
+ "to 20 MHz channel)", /* 31 */
+ "Disassociated for unspecified, QoS-related reason", /* 32 */
+ "Disassociated because QoS AP lacks sufficient bandwidth for this "
+ "QoS STA", /* 33 */
+ "Disassociated because of excessive number of frames that need to be "
+ "acknowledged, but are not acknowledged for AP transmissions "
+ "and/or poor channel conditions", /* 34 */
+ "Disassociated because STA is transmitting outside the limits "
+ "of its TXOPs", /* 35 */
+ "Requested from peer STA as the STA is leaving the BSS "
+ "(or resetting)", /* 36 */
+ "Requested from peer STA as it does not want to use the "
+ "mechanism", /* 37 */
+ "Requested from peer STA as the STA received frames using the "
+ "mechanism for which a set up is required", /* 38 */
+ "Requested from peer STA due to time out", /* 39 */
+ "Reserved", /* 40 */
+ "Reserved", /* 41 */
+ "Reserved", /* 42 */
+ "Reserved", /* 43 */
+ "Reserved", /* 44 */
+ "Peer STA does not support the requested cipher suite", /* 45 */
+ "Association denied due to requesting STA not supporting HT "
+ "features", /* 46 */
};
#define NUM_REASONS (sizeof reason_text / sizeof reason_text[0])
@@ -571,6 +684,66 @@ handle_deauth(const struct mgmt_header_t
return 1;
}
+#define PRINT_HT_ACTION(v) (\
+ (v) == 0 ? printf("TxChWidth") : \
+ (v) == 1 ? printf("MIMOPwrSave") : \
+ printf("Act#%d", (v)) \
+)
+#define PRINT_BA_ACTION(v) (\
+ (v) == 0 ? printf("ADDBA Request") : \
+ (v) == 1 ? printf("ADDBA Response") : \
+ (v) == 2 ? printf("DELBA") : \
+ printf("Act#%d", (v)) \
+)
+#define PRINT_MESHLINK_ACTION(v) (\
+ (v) == 0 ? printf("Request") : \
+ (v) == 1 ? printf("Report") : \
+ printf("Act#%d", (v)) \
+)
+#define PRINT_MESHPEERING_ACTION(v) (\
+ (v) == 0 ? printf("Open") : \
+ (v) == 1 ? printf("Confirm") : \
+ (v) == 2 ? printf("Close") : \
+ printf("Act#%d", (v)) \
+)
+#define PRINT_MESHPATH_ACTION(v) (\
+ (v) == 0 ? printf("Request") : \
+ (v) == 1 ? printf("Report") : \
+ (v) == 2 ? printf("Error") : \
+ (v) == 3 ? printf("RootAnnouncement") : \
+ printf("Act#%d", (v)) \
+)
+
+static int
+handle_action(const struct mgmt_header_t *pmh, const u_char *p)
+{
+ if (!TTEST2(*p, 2))
+ return 0;
+ if (eflag) {
+ printf(": ");
+ } else {
+ printf(" (%s): ", etheraddr_string(pmh->sa));
+ }
+ switch (p[0]) {
+ case 0: printf("Spectrum Management Act#%d", p[1]); break;
+ case 1: printf("QoS Act#%d", p[1]); break;
+ case 2: printf("DLS Act#%d", p[1]); break;
+ case 3: printf("BA "); PRINT_BA_ACTION(p[1]); break;
+ case 7: printf("HT "); PRINT_HT_ACTION(p[1]); break;
+ case 13: printf("MeshLMetric "); PRINT_MESHLINK_ACTION(p[1]); break;
+ case 15: printf("Interwork Act#%d", p[1]); break;
+ case 16: printf("Resource Act#%d", p[1]); break;
+ case 17: printf("Proxy Act#%d", p[1]); break;
+ case 30: printf("MeshPeering "); PRINT_MESHPEERING_ACTION(p[1]); break;
+ case 32: printf("MeshPath "); PRINT_MESHPATH_ACTION(p[1]); break;
+ case 127: printf("Vendor Act#%d", p[1]); break;
+ default:
+ printf("Reserved(%d) Act#%d", p[0], p[1]);
+ break;
+ }
+ return 1;
+}
+
/*********************************************************************************
* Print Body funcs
@@ -622,6 +795,10 @@ mgmt_body_print(u_int16_t fc, const stru
printf("DeAuthentication");
return handle_deauth(pmh, p);
break;
+ case ST_ACTION:
+ printf("Action");
+ return handle_action(pmh, p);
+ break;
default:
printf("Unhandled Management subtype(%x)",
FC_SUBTYPE(fc));
@@ -649,6 +826,14 @@ ctrl_body_print(u_int16_t fc, const u_ch
EXTRACT_LE_16BITS(&(((const struct ctrl_bar_t *)p)->ctl)),
EXTRACT_LE_16BITS(&(((const struct ctrl_bar_t *)p)->seq)));
break;
+ case CTRL_BA:
+ printf("BA");
+ if (!TTEST2(*p, CTRL_BA_HDRLEN))
+ return 0;
+ if (!eflag)
+ printf(" RA:%s ",
+ etheraddr_string(((const struct ctrl_ba_t *)p)->ra));
+ break;
case CTRL_PS_POLL:
printf("Power Save-Poll");
if (!TTEST2(*p, CTRL_PS_POLL_HDRLEN))
@@ -829,6 +1014,10 @@ ctrl_header_print(u_int16_t fc, const u_
EXTRACT_LE_16BITS(&(((const struct ctrl_bar_t *)p)->ctl)),
EXTRACT_LE_16BITS(&(((const struct ctrl_bar_t *)p)->seq)));
break;
+ case CTRL_BA:
+ printf("RA:%s ",
+ etheraddr_string(((const struct ctrl_ba_t *)p)->ra));
+ break;
case CTRL_PS_POLL:
printf("BSSID:%s TA:%s ",
etheraddr_string(((const struct ctrl_ps_poll_t *)p)->bssid),
@@ -901,14 +1090,20 @@ extract_header_length(u_int16_t fc)
}
}
+static int
+extract_mesh_header_length(const u_char *p)
+{
+ return (p[0] &~ 3) ? 0 : 6*(1 + (p[0] & 3));
+}
+
/*
* Print the 802.11 MAC header if eflag is set, and set "*srcp" and "*dstp"
* to point to the source and destination MAC addresses in any case if
* "srcp" and "dstp" aren't null.
*/
-static inline void
-ieee_802_11_hdr_print(u_int16_t fc, const u_char *p, const u_int8_t **srcp,
- const u_int8_t **dstp)
+static void
+ieee_802_11_hdr_print(u_int16_t fc, const u_char *p, u_int hdrlen,
+ u_int meshdrlen, const u_int8_t **srcp, const u_int8_t **dstp)
{
if (vflag) {
if (FC_MORE_DATA(fc))
@@ -928,6 +1123,21 @@ ieee_802_11_hdr_print(u_int16_t fc, cons
EXTRACT_LE_16BITS(
&((const struct mgmt_header_t *)p)->duration));
}
+ if (meshdrlen != 0) {
+ const struct meshcntl_t *mc =
+ (const struct meshcntl_t *)&p[hdrlen - meshdrlen];
+ int ae = mc->flags & 3;
+
+ printf("MeshData (AE %d TTL %u seq %u", ae, mc->ttl,
+ EXTRACT_LE_32BITS(mc->seq));
+ if (ae > 0)
+ printf(" A4:%s", etheraddr_string(mc->addr4));
+ if (ae > 1)
+ printf(" A5:%s", etheraddr_string(mc->addr5));
+ if (ae > 2)
+ printf(" A6:%s", etheraddr_string(mc->addr6));
+ printf(") ");
+ }
switch (FC_TYPE(fc)) {
case T_MGMT:
@@ -956,7 +1166,7 @@ static u_int
ieee802_11_print(const u_char *p, u_int length, u_int caplen, int pad)
{
u_int16_t fc;
- u_int hdrlen;
+ u_int hdrlen, meshdrlen;
const u_int8_t *src, *dst;
u_short extracted_ethertype;
@@ -969,13 +1179,19 @@ ieee802_11_print(const u_char *p, u_int
hdrlen = extract_header_length(fc);
if (pad)
hdrlen = roundup2(hdrlen, 4);
+ if (FC_TYPE(fc) == T_DATA && DATA_FRAME_IS_QOS(FC_SUBTYPE(fc))) {
+ meshdrlen = extract_mesh_header_length(p+hdrlen);
+ hdrlen += meshdrlen;
+ } else
+ meshdrlen = 0;
+
if (caplen < hdrlen) {
printf("[|802.11]");
return hdrlen;
}
- ieee_802_11_hdr_print(fc, p, &src, &dst);
+ ieee_802_11_hdr_print(fc, p, hdrlen, meshdrlen, &src, &dst);
/*
* Go past the 802.11 header.
@@ -1014,8 +1230,8 @@ ieee802_11_print(const u_char *p, u_int
* handle intelligently
*/
if (!eflag)
- ieee_802_11_hdr_print(fc, p - hdrlen, NULL,
- NULL);
+ ieee_802_11_hdr_print(fc, p - hdrlen, hdrlen,
+ meshdrlen, NULL, NULL);
if (extracted_ethertype)
printf("(LLC %s) ",
etherproto_string(
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