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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-11 19:40:14 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-11 19:40:14 -0700
commit038a5008b2f395c85e6e71d6ddf3c684e7c405b0 (patch)
tree4735eab577e97e5a22c3141e3f60071c8065585e /Documentation/networking/mac80211-injection.txt
parentdd6d1844af33acb4edd0a40b1770d091a22c94be (diff)
parent266918303226cceac7eca38ced30f15f277bd89c (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (867 commits) [SKY2]: status polling loop (post merge) [NET]: Fix NAPI completion handling in some drivers. [TCP]: Limit processing lost_retrans loop to work-to-do cases [TCP]: Fix lost_retrans loop vs fastpath problems [TCP]: No need to re-count fackets_out/sacked_out at RTO [TCP]: Extract tcp_match_queue_to_sack from sacktag code [TCP]: Kill almost unused variable pcount from sacktag [TCP]: Fix mark_head_lost to ignore R-bit when trying to mark L [TCP]: Add bytes_acked (ABC) clearing to FRTO too [IPv6]: Update setsockopt(IPV6_MULTICAST_IF) to support RFC 3493, try2 [NETFILTER]: x_tables: add missing ip6t_modulename aliases [NETFILTER]: nf_conntrack_tcp: fix connection reopening [QETH]: fix qeth_main.c [NETLINK]: fib_frontend build fixes [IPv6]: Export userland ND options through netlink (RDNSS support) [9P]: build fix with !CONFIG_SYSCTL [NET]: Fix dev_put() and dev_hold() comments [NET]: make netlink user -> kernel interface synchronious [NET]: unify netlink kernel socket recognition [NET]: cleanup 3rd argument in netlink_sendskb ... Fix up conflicts manually in Documentation/feature-removal-schedule.txt and my new least favourite crap, the "mod_devicetable" support in the files include/linux/mod_devicetable.h and scripts/mod/file2alias.c. (The latter files seem to be explicitly _designed_ to get conflicts when different subsystems work with them - that have an absolutely horrid lack of subsystem separation!) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/networking/mac80211-injection.txt')
-rw-r--r--Documentation/networking/mac80211-injection.txt32
1 files changed, 26 insertions, 6 deletions
diff --git a/Documentation/networking/mac80211-injection.txt b/Documentation/networking/mac80211-injection.txt
index 53ef7a06f49..84906ef3ed6 100644
--- a/Documentation/networking/mac80211-injection.txt
+++ b/Documentation/networking/mac80211-injection.txt
@@ -13,15 +13,35 @@ The radiotap format is discussed in
./Documentation/networking/radiotap-headers.txt.
Despite 13 radiotap argument types are currently defined, most only make sense
-to appear on received packets. Currently three kinds of argument are used by
-the injection code, although it knows to skip any other arguments that are
-present (facilitating replay of captured radiotap headers directly):
+to appear on received packets. The following information is parsed from the
+radiotap headers and used to control injection:
- - IEEE80211_RADIOTAP_RATE - u8 arg in 500kbps units (0x02 --> 1Mbps)
+ * IEEE80211_RADIOTAP_RATE
- - IEEE80211_RADIOTAP_ANTENNA - u8 arg, 0x00 = ant1, 0x01 = ant2
+ rate in 500kbps units, automatic if invalid or not present
- - IEEE80211_RADIOTAP_DBM_TX_POWER - u8 arg, dBm
+
+ * IEEE80211_RADIOTAP_ANTENNA
+
+ antenna to use, automatic if not present
+
+
+ * IEEE80211_RADIOTAP_DBM_TX_POWER
+
+ transmit power in dBm, automatic if not present
+
+
+ * IEEE80211_RADIOTAP_FLAGS
+
+ IEEE80211_RADIOTAP_F_FCS: FCS will be removed and recalculated
+ IEEE80211_RADIOTAP_F_WEP: frame will be encrypted if key available
+ IEEE80211_RADIOTAP_F_FRAG: frame will be fragmented if longer than the
+ current fragmentation threshold. Note that
+ this flag is only reliable when software
+ fragmentation is enabled)
+
+The injection code can also skip all other currently defined radiotap fields
+facilitating replay of captured radiotap headers directly.
Here is an example valid radiotap header defining these three parameters