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a5f69d94d8
linux/net
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Helmut Schaa a5f69d94d8 mac80211: Get rid of search loop for rate group index 
Finding the group index for a specific rate is done by looping through
all groups and returning if the correct one is found. This code is
called for each tx'ed frame and thus it makes sense to reduce its
runtime.

Do this by calculating the group index by this formula based on the SGI
and HT40 flags as well as the stream number:

idx = (HT40 * 2 * MINSTREL_MAX_STREAMS) +
      (SGI * MINSTREL_MAX_STREAMS) +
      (streams - 1)

Hence, the groups are ordered by th HT40 flag first, then by the SGI
flag and afterwards by the number of used streams.

This should reduce the runtime of minstrel_ht_get_group_idx
considerable.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-17 15:43:57 -05:00
..
9p net/9p: Convert net/9p protocol dumps to tracepoints 2011-10-24 11:13:12 -05:00
802 rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER 2011-08-02 04:29:23 -07:00
8021q vlan: allow nested vlan_do_receive() 2011-10-30 04:43:30 -04:00
appletalk net: add skb frag size accessors 2011-10-19 03:10:46 -04:00
atm Merge branch 'master' of github.com:davem330/net 2011-09-22 03:23:13 -04:00
ax25
batman-adv Merge branch 'batman-adv/maint' of git://git.open-mesh.org/linux-merge 2011-10-30 03:05:07 -04:00
bluetooth Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-next 2011-11-09 14:54:33 -05:00
bridge Merge branch 'master' of ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2011-10-24 18:18:09 -04:00
caif caif: Fix BUG() with network namespaces 2011-10-25 19:22:23 -04:00
can can: remove references to berlios mailinglist 2011-10-17 19:22:46 -04:00
ceph Merge branch 'for-linus' of git://github.com/NewDreamNetwork/ceph-client 2011-09-29 19:58:58 -07:00
core net: add wireless TX status socket option 2011-11-09 16:01:02 -05:00
dcb dcb: add DCBX mode to event notifier attributes 2011-10-06 15:49:51 -04:00
dccp ipv6: tcp: fix TCLASS value in ACK messages sent from TIME_WAIT 2011-10-27 00:44:35 -04:00
decnet rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER 2011-08-02 04:29:23 -07:00
dns_resolver
dsa net: remove use of ndo_set_multicast_list in drivers 2011-08-17 20:22:03 -07:00
econet af_econet: Use current logging styles and neatening 2011-07-03 20:05:16 -07:00
ethernet net: don't clear IFF_XMIT_DST_RELEASE in ether_setup 2011-09-15 14:49:44 -04:00
ieee802154 6LoWPAN: fix skb_copy call 2011-09-15 15:36:35 -04:00
ipv4 ipv6: tcp: fix TCLASS value in ACK messages sent from TIME_WAIT 2011-10-27 00:44:35 -04:00
ipv6 ipv6: fix route lookup in addrconf_prefix_rcv() 2011-10-30 04:12:36 -04:00
ipx
irda Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty 2011-10-26 15:11:09 +02:00
iucv net: more accurate skb truesize 2011-10-13 16:05:07 -04:00
key net: Remove casts of void * 2011-06-16 23:19:27 -04:00
l2tp Merge branch 'master' of ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2011-10-24 18:18:09 -04:00
lapb wan: make LAPB callbacks const 2011-09-16 19:20:20 -04:00
llc
mac80211 mac80211: Get rid of search loop for rate group index 2011-11-17 15:43:57 -05:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2011-10-25 13:25:22 +02:00
netlabel Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net 2011-08-20 10:39:12 -07:00
netlink af_unix: dont send SCM_CREDENTIALS by default 2011-09-28 13:29:50 -04:00
netrom netrom: Reduce switch/case indent 2011-07-01 16:11:16 -07:00
nfc NFC: Check if NCI data flow control is used 2011-11-11 12:32:50 -05:00
packet macvlan: handle fragmented multicast frames 2011-10-18 23:22:07 -04:00
phonet rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER 2011-08-02 04:29:23 -07:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2011-10-25 13:25:22 +02:00
rfkill net/rfkill/core.c: use kstrtoul, etc 2011-11-09 16:14:10 -05:00
rose rose: Delete commented out references to ancient firewalling code. 2011-07-07 02:41:59 -07:00
rxrpc rxrpc: Fix set but unused variable 'usage' in rxrpc_get_transport() 2011-05-19 18:51:50 -04:00
sched net_sched: cls_flow: use skb_header_pointer() 2011-10-24 18:40:14 -04:00
sctp ipv6: tcp: fix TCLASS value in ACK messages sent from TIME_WAIT 2011-10-27 00:44:35 -04:00
sunrpc Merge branch 'nfs-for-3.2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs 2011-10-25 15:44:06 +02:00
tipc tipc: Remove unused link event tracking code 2011-09-17 22:55:15 -04:00
unix af_unix: dont send SCM_CREDENTIALS by default 2011-09-28 13:29:50 -04:00
wanrouter
wimax
wireless nl80211: Pass probe response data to drivers 2011-11-11 12:32:51 -05:00
x25 x25: Prevent skb overreads when checking call user data 2011-10-17 19:31:40 -04:00
xfrm net: add skb frag size accessors 2011-10-19 03:10:46 -04:00
compat.c
Kconfig NFC: add nfc subsystem core 2011-07-05 15:26:57 -04:00
Makefile NFC: add nfc subsystem core 2011-07-05 15:26:57 -04:00
nonet.c
socket.c net: add wireless TX status socket option 2011-11-09 16:01:02 -05:00
sysctl_net.c