So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes
on 64bit architectures, allowing us to combine the 4 bytes hole left by the
layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4
64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN...
:-)
Many calculations that previously required that skb->{transport,network,
mac}_header be first converted to a pointer now can be done directly, being
meaningful as offsets or pointers.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Renaming skb->h to skb->transport_header, skb->nh to skb->network_header and
skb->mac to skb->mac_header, to match the names of the associated helpers
(skb[_[re]set]_{transport,network,mac}_header).
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This time of the type:
skb->nh.iph = (struct iphdr *)skb->data;
That is completely equivalent to:
skb->nh.raw = skb->data;
Wonder why people love casts... :-)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For the common, open coded 'skb->nh.raw = skb->data' operation, so that we can
later turn skb->nh.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.
This one touches just the most simple case, next will handle the slightly more
"complex" cases.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For the common, open coded 'skb->mac.raw = skb->data' operation, so that we can
later turn skb->mac.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.
This one touches just the most simple case, next will handle the slightly more
"complex" cases.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
One less thing for drivers writers to worry about.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is a bug in ieee80211softmac that always sets the user rate
to 11Mbs, no matter the capabilities of the device. This bug was
probably beneficial as long as the bcm43xx cards were rate limited;
however, most are now capable of relatively high speeds. This patch
fixes that bug and eliminates an assert that is no longer needed.
Once the cards are capable of full OFDM speeds, the 24 Mbs rate will
be changed to 54 Mbs.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Sparse issues the warning "warning: symbol 'crypt' shadows an earlier one"
in net/ieee80211/ieee80211_tx.c.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Unconfigured bcm43xx device can hit an assert() during wx_get_rate
queries. This is because bcm43xx calls ieee80211softmac_start late
(i.e. during open instead of probe).
bcm43xx_net_open ->
bcm43xx_init_board ->
bcm43xx_select_wireless_core ->
ieee80211softmac_start
Fix is to check that device is running before completing
ieee80211softmac_wx_get_rate.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
ieee80211softmac_wx_get_genie locks the associnfo mutex at
function exit. This patch fixes it. The patch is against Linus'
tree (commit af1713e0).
Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The signature of work functions changed recently from a context
pointer to the work structure pointer. This caused a problem in
the ieee80211softmac code, because the ieee80211softmac_assox_work
function has been called directly with a parameter explicitly
casted to (void*). This compiled correctly but resulted in a
softlock, because mutex_lock was called with the wrong memory
address. The patch fixes the problem. Another issue was a wrong
call of the schedule_work function. Softmac works again and this
fixes the problem I mentioned earlier in the zd1211rw rx tasklet
patch. The patch is against Linus' tree (commit af1713e0).
Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Acked-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Fix ieee80211-softmac compile problem where it's using schedule_work() on a
delayed_work struct.
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Routine ieee80211softmac_wx_set_mlme has one return that fails
to release a mutex acquired at entry.
Signed-off-by: Maxime Austruy <maxime@tralhalla.org>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
In 2.6.19 a deauthentication from the AP doesn't start a
reassociation by the softmac code. It appears that
mac->associnfo.associating must be set and the
ieee80211softmac_assoc_work function must be scheduled. This patch
fixes that.
Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Conflicts:
drivers/ata/libata-scsi.c
include/linux/libata.h
Futher merge of Linus's head and compilation fixups.
Signed-Off-By: David Howells <dhowells@redhat.com>
Conflicts:
drivers/infiniband/core/iwcm.c
drivers/net/chelsio/cxgb2.c
drivers/net/wireless/bcm43xx/bcm43xx_main.c
drivers/net/wireless/prism54/islpci_eth.c
drivers/usb/core/hub.h
drivers/usb/input/hid-core.c
net/core/netpoll.c
Fix up merge failures with Linus's head and fix new compilation failures.
Signed-Off-By: David Howells <dhowells@redhat.com>
When scanning in debug mode, softmac is very chatty in that it puts
3 lines in the logs for each time it scans. This patch has only one
line containing all the information previously reported.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
bcm43xx and ipw2100 currently duplicate the same simplistic get_stats
handler. Additionally, zd1211rw requires the same handler to fix a
bug where all stats are reported as 0.
This patch adds a generic implementation to the ieee80211 layer,
which drivers are free to override.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
And use kmemdup and kzalloc where applicable
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
SoftMAC contains a number of debug-type messages that continue to print
even when debugging is turned off. This patch substitutes dprintkl for
printkl for those lines.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
In the SoftMAC version of the IEEE 802.11 stack, not all duplicate messages are
detected. For the most part, there is no difficulty; however for TKIP and CCMP
encryption, the duplicates result in a "replay detected" log message where the
received and previous values of the TSC are identical. This change adds a new
variable to the ieee80211_device structure that holds the 'seq_ctl' value for
the previous frame. When a new frame repeats the value, the frame is dropped and
the appropriate counter is incremented.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Hi
this patch allow to set the mtu between 1500 and 2304 (max octets in an
MSDU) for devices using ieee80211 linux stack.
Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch adds a host_strip_iv_icv flag to ieee80211 which indicates that
ieee80211_rx should strip the IV/ICV/other security features from the payload.
This saves on some memmove() calls in the driver and seems like something that
belongs in the stack as it can be used by bcm43xx, ipw2200, and zd1211rw
I will submit the ipw2200 patch separately as it needs testing.
This patch also adds some sensible variable reuse (idx vs keyidx) in
ieee80211_rx
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
In the scan section of ieee80211softmac, network transmits are
disabled. When SoftMAC re-enables transmits, it may override the
wishes of a driver that may have very good reasons for disabling
transmits. At least one failure in bcm43xx can be traced to this
problem. In addition, several unexplained problems may arise from
the unexpected enabling of transmits. Note that making this change
introduces a new bug that would allow transmits for the current session
to be transmitted on the wrong channel; however, the new bug is much
less severe than the one being fixed, as the new one only leads to
a few retransmits, whereas the old one can bring the interface down.
A fix that will not introduce new bugs is being investigated; however,
the current, more serious one should be fixed now.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The 802.11 header length is affected by the wireless mode (WDS or not) and
type (QoS or not). We should use the variable hdr_len instead of the
hard coded IEEE80211_3ADDR_LEN, otherwise we may touch invalid memory.
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The "ieee80211: Workaround malformed 802.11 frames from AP" patch (see
http://kernel.org/git/?p=linux/kernel/git/linville/wireless-2.6.git;a=commit;h=f09fc44d8c25f22c4d985bb93857338ed02feac6 )
fixes the problem with some buggy APs but also converts debug message into
an error one. This floods the log with errors when you are near such AP (you
get a message for every beacon). This patch reverts the error message back
to the debug one.
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
CRYPTO_MANAGER is selected automatically by CONFIG_ECB and CONFIG_CBC.
config CRYPTO_ECB
tristate "ECB support"
select CRYPTO_BLKCIPHER
select CRYPTO_MANAGER
I've added CONFIG_ECB to the ones you mentioned and CONFIG_CBC to
gssapi.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Fix a slab corruption in ieee80211softmac_auth(). The size of a buffer
was miscomputed.
see http://bugzilla.kernel.org/show_bug.cgi?id=7245
Acked-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Laurent Riffard <laurent.riffard@free.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This fixes some race conditions in the WirelessExtension
handling and association handling code.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Patch to make bcm43xx-softmac be compatible with the revised SSID
length of WE-21.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch converts all remaining users to use the new block cipher type
where applicable. It also changes all simple cipher operations to use
the new encrypt_one/decrypt_one interface.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Stop processing further but return success when we receive a malformed
packet from the AP. We need this patch to workaround some AP bugs. For
example, the beacon frames from the Orinoco AP1000 contains an IE (value
= 128) with length equals to 8 but the actual frame length is only 7.
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The IEEE80211 TKIP and WEP Tx and Rx paths use the same crypto_tfm to encrypt
and decrypt data. During the encrypt and decrypt process, both of them will
set a new key to crypto_tfm. If they happen on the same time, it will
corrupt the crypto_tfm. Thus users will receive an ICV error or Michael MIC
error. This only likely to happen on SMP box with heavy traffic both on Tx
and Rx. The patch use two sets of crypto_tfms to avoid this problem.
Signed-off-by: Hong Liu <hong.liu@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
ieee80211_rx_any is new to 2.6.18-rc1, even though it appears this function
was never completed:
http://lists.sipsolutions.net/pipermail/softmac-dev/2006-February/000103.html
This patch changes ieee80211_rx_any to always claim the skb, which avoids
further driver complexity and the possibility of leaking management frames.
It also exports the function so that people can actually use it.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
