Cleanup generic block based fiemap

[safe/jmp/linux-2.6] / include / net / ieee80211_radiotap.h

diff --git a/include/net/ieee80211_radiotap.h b/include/net/ieee80211_radiotap.h
index a0c2b41..af49f8a 100644 (file)
--- a/include/net/ieee80211_radiotap.h
+++ b/include/net/ieee80211_radiotap.h
@@ -1,7 +1,4 @@
-/* $FreeBSD: src/sys/net80211/ieee80211_radiotap.h,v 1.5 2005/01/22 20:12:05 sam Exp $ */
-/* $NetBSD: ieee80211_radiotap.h,v 1.11 2005/06/22 06:16:02 dyoung Exp $ */
-
-/*-
+/*
  * Copyright (c) 2003, 2004 David Young.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -40,9 +37,8 @@
 
 #include <linux/if_ether.h>
 #include <linux/kernel.h>
+#include <asm/unaligned.h>
 
-/* Radiotap header version (from official NetBSD feed) */
-#define IEEE80211RADIOTAP_VERSION      "1.5"
 /* Base version of the radiotap packet header data */
 #define PKTHDR_RADIOTAP_VERSION                0
 
@@ -61,12 +57,8 @@
  * readers.
  */
 
-/* XXX tcpdump/libpcap do not tolerate variable-length headers,
- * yet, so we pad every radiotap header to 64 bytes. Ugh.
- */
-#define IEEE80211_RADIOTAP_HDRLEN      64
-
-/* The radio capture header precedes the 802.11 header.
+/*
+ * The radio capture header precedes the 802.11 header.
  * All data in the header is little endian on all platforms.
  */
 struct ieee80211_radiotap_header {
@@ -88,7 +80,7 @@ struct ieee80211_radiotap_header {
                                 * Additional extensions are made
                                 * by setting bit 31.
                                 */
-};
+} __packed;
 
 /* Name                                 Data type    Units
  * ----                                 ---------    -----
@@ -206,6 +198,10 @@ enum ieee80211_radiotap_type {
        IEEE80211_RADIOTAP_TX_FLAGS = 15,
        IEEE80211_RADIOTAP_RTS_RETRIES = 16,
        IEEE80211_RADIOTAP_DATA_RETRIES = 17,
+
+       /* valid in every it_present bitmap, even vendor namespaces */
+       IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29,
+       IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30,
        IEEE80211_RADIOTAP_EXT = 31
 };
 
@@ -238,8 +234,10 @@ enum ieee80211_radiotap_type {
                                                 * 802.11 header and payload
                                                 * (to 32-bit boundary)
                                                 */
+#define IEEE80211_RADIOTAP_F_BADFCS    0x40    /* bad FCS */
+
 /* For IEEE80211_RADIOTAP_RX_FLAGS */
-#define IEEE80211_RADIOTAP_F_RX_BADFCS 0x0001  /* frame failed crc check */
+#define IEEE80211_RADIOTAP_F_RX_BADPLCP        0x0002  /* frame has bad PLCP */
 
 /* For IEEE80211_RADIOTAP_TX_FLAGS */
 #define IEEE80211_RADIOTAP_F_TX_FAIL   0x0001  /* failed due to excessive
@@ -255,4 +253,13 @@ enum ieee80211_radiotap_type {
        (((x) == 14) ? 2484 : ((x) * 5) + 2407) : \
        ((x) + 1000) * 5)
 
+/* helpers */
+static inline int ieee80211_get_radiotap_len(unsigned char *data)
+{
+       struct ieee80211_radiotap_header *hdr =
+               (struct ieee80211_radiotap_header *)data;
+
+       return get_unaligned_le16(&hdr->it_len);
+}
+
 #endif                         /* IEEE80211_RADIOTAP_H */