- 10 Jun, 2009 7 commits
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Matthieu CASTET authored
Fix possible unaligned u32 access in b43_generate_plcp_hdr(). Unaligned data is read/write with a u32 pointer instead of using the packed structure. Some versions of gcc ignore the "packed" attribute, if the structure element is accessed through a local pointer. Signed-off-by:
Matthieu CASTET <castet.matthieu@free.fr> Signed-off-by:
Michael Buesch <mb@bu3sch.de> Signed-off-by:
John W. Linville <linville@tuxdriver.com>
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Bob Copeland authored
The minstrel rate controller periodically looks up rate indexes in a sampling table. When accessing a specific row and column, minstrel correctly does a bounds check which, on the surface, appears to handle the case where mi->n_rates < 2. However, mi->sample_idx is actually defined as an unsigned, so the right hand side is taken to be a huge positive number when negative, and the check will always fail. Consequently, the RC will overrun the array and cause random memory corruption when communicating with a peer that has only a single rate. The max value of mi->sample_idx is around 25 so casting to int should have no ill effects. Without the change, uptime is a few minutes under load with an AP that has a single hard-coded rate, and both the AP and STA could potentially crash. With the change, both lasted 12 hours with a steady load. Thanks to Ognjen Maric for providing the single-rate clue so I could reproduce this. This fixes http://bugzilla.kernel.org/show_bug.cgi?id=12490 on the regression list (also http://bugzilla.kernel.org/show_bug.cgi?id=13000). Cc: stable@kernel.org Reported-by:
Sergey S. Kostyliov <rathamahata@gmail.com> Reported-by:
Ognjen Maric <ognjen.maric@gmail.com> Signed-off-by:
Bob Copeland <me@bobcopeland.com> Signed-off-by:
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Sebastian Andrzej Siewior authored
This removes the dependency on GPIO framework and lets the SPI host driver handle the chip select. The SPI host driver is required to keep the CS active for the entire message unless cs_change says otherwise. This patch collects the two/three single SPI transfers into a message. Also the delay in read path in case use_dummy_writes are not used is moved into the SPI host driver. Tested-by:
Mike Rapoport <mike@compulab.co.il> Tested-by:
Andrey Yurovsky <andrey@cozybit.com> Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by:
Dan Williams <dcbw@redhat.com> Signed-off-by:
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Jussi Kivilinna authored
Driver used to be named rndis_wext before inclusion to upstream. Since rndis_wlan is being converted to cfg80211, use of rndis_wext* names can be confusing. So rename all rndis_wext to rndis_wlan (as should have been when driver was renamed). Signed-off-by:
Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by:
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Jussi Kivilinna authored
Capitalize enum labels as told in Documents/CodingStyle. Signed-off-by:
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Johannes Berg authored
This ports the iwlwifi rfkill code to the new API offered by cfg80211 and thus removes a lot of useless stuff. The soft- rfkill is completely removed since that is now handled by setting the interfaces down. Signed-off-by:
Johannes Berg <johannes@sipsolutions.net> Tested-by:
Reinette Chatre <reinette.chatre@intel.com> Signed-off-by:
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Johannes Berg authored
Since we use ERR_PTR and similar macros, we need to include linux/err.h. Signed-off-by:
David S. Miller <davem@davemloft.net>
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- 09 Jun, 2009 27 commits
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Breno Leitao authored
There is no need to check if a pointer is NULL before calling vfree(), since vfree() function already check for it. Signed-off-by:
Breno Leitão <leitao@linux.vnet.ibm.com> Signed-off-by:
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Yi Zou authored
Include offloaded FCoE data into total rx/tx statistics for 82599 so they are properly reflected by ethtool or ifconfig. Signed-off-by:
Yi Zou <yi.zou@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by:
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Chaitanya Lala authored
Ethtool is a standard way of getting information about ethernet interfaces. We enhance ethtool kernel interface & e1000e to make the MDI-X status readable via ethtool in userspace. Signed-off-by:
Chaitanya Lala <clala@riverbed.com> Signed-off-by:
Arthur Jones <ajones@riverbed.com> Signed-off-by:
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Simon Horman authored
e1000e_config_collision_dist() sets tctl, but subsequently tctl is overwritten. It seems to me that as things stand the call to e1000e_config_collision_dist() has no effect and should either be removed or moved down a little bit. This kernel patch takes the latter option. Signed-off-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
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Dave Graham authored
Phy corruption has been observed on 2-port 82571 adapters, and is root-caused to lack of synchronization between the 2 driver instances, which conflict when attempting to access the phy via the single MDIC register. A semaphore exists for this purpose, and is now used on these designs. Because PXE &/or EFI boot code (which we cannot expect to be built with this fix) may leave the inter-instance semaphore in an invalid initial state when the driver first loads, this fix also includes a one-time (per driver load) fix-up of the semaphore initial state. Signed-off-by:
dave graham <david.graham@intel.com> Signed-off-by:
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Sergey Lapin authored
fakehard is a really simple driver implementing only necessary callbacks and serves the role of an example of driver for HardMAC IEEE 802.15.4 device. Signed-off-by:
Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by:
Sergey Lapin <slapin@ossfans.org> Signed-off-by:
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Sergey Lapin authored
Add MAINTAINERS entry and a small text describing our stack interfaces, how to hook the drivers, etc. Signed-off-by:
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Sergey Lapin authored
Add a netlink interface for configuration of IEEE 802.15.4 device. Also this interface specifies events notification sent by devices towards higher layers. Signed-off-by:
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Sergey Lapin authored
Add support for communication over IEEE 802.15.4 networks. This implementation is neither certified nor complete, but aims to that goal. This commit contains only the socket interface for communication over IEEE 802.15.4 networks. One can either send RAW datagrams or use SOCK_DGRAM to encapsulate data inside normal IEEE 802.15.4 packets. Configuration interface, drivers and software MAC 802.15.4 implementation will follow. Initial implementation was done by Maxim Gorbachyov, Maxim Osipov and Pavel Smolensky as a research project at Siemens AG. Later the stack was heavily reworked to better suit the linux networking model, and is now maitained as an open project partially sponsored by Siemens. Signed-off-by:
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Sergey Lapin authored
IEEE 802.15.4 stack requires several constants to be defined/adjusted. Signed-off-by:
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Jarek Poplawski authored
Change PSCHED_SHIFT from 10 to 6 to increase schedulers time resolution. This will increase 16x a number of (internal) ticks per nanosecond, and is needed to improve accuracy of schedulers based on rate tables, like HTB, TBF or CBQ, with rates above 100Mbit. It is assumed this change is safe for 32bit accounting of time diffs up to 2 minutes, which should be enough for common use (extremely low rate values may overflow, so get inaccurate instead). To make full use of this change an updated iproute2 will be needed. (But using older iproute2 should be safe too.) This change breaks ticks - microseconds similarity, so some minor code fixes might be needed. It is also planned to change naming adequately eg. to PSCHED_TICKS2NS() etc. in the near future. Reported-by:
Antonio Almeida <vexwek@gmail.com> Tested-by:
Jarek Poplawski <jarkao2@gmail.com> Signed-off-by:
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Jarek Poplawski authored
Use PSCHED_SHIFT constant instead of '10' in PSCHED_US2NS() and PSCHED_NS2US() macros to enable changing this value later. Additionally use PSCHED_SHIFT in sch_hfsc SM_SHIFT and ISM_SHIFT definitions. This part of the patch is based on feedback from Patrick McHardy <kaber@trash.net>. Reported-by:
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Eric Dumazet authored
commit f001fde5 (net: introduce a list of device addresses dev_addr_list (v6)) added one regression Vegard Nossum found in its testings. With kmemcheck help, Vegard found some uninitialized memory was read and reported to user, potentialy leaking kernel data. ( thread can be found on http://lkml.org/lkml/2009/5/30/177 ) dev_addr_init() incorrectly uses sizeof() operator. We were initializing one byte instead of MAX_ADDR_LEN bytes. Reported-by:
Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by:
Eric Dumazet <eric.dumazet@gmail.com> Acked-by:
Jiri Pirko <jpirko@redhat.com> Signed-off-by:
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David S. Miller authored
This driver does not indicate support for frag lists. Furthermore, even if it did, the code is walking the frag lists incorrectly. The idiom is: for (iter = skb_shinfo(skb)->frag_list; iter; iter = iter->next) but it's doing: for (iter = skb_shinfo(skb)->frag_list; iter; iter = skb_shinfo(iter)->frag_list) which would never work. And this proves that this driver never saw an SKB with active frag lists. So just remove the code altogether and the driver TX path becomes much simpler. Signed-off-by: -
David S. Miller authored
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David S. Miller authored
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David S. Miller authored
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David S. Miller authored
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David S. Miller authored
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David S. Miller authored
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David S. Miller authored
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David S. Miller authored
Signed-off-by: -
David S. Miller authored
Signed-off-by: -
David S. Miller authored
Signed-off-by: -
David S. Miller authored
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David S. Miller authored
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David S. Miller authored
With the hope that these can be used to eliminate direct references to the frag list implementation. Signed-off-by:
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- 08 Jun, 2009 6 commits
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David S. Miller authored
Furthermore, it twiddles with the details of SKB list handling directly, which we're trying to eliminate. Signed-off-by: -
Maciej W. Rozycki authored
A driver overhaul on 29 Feb 2000 (!) broke locking around fiddling with the tx descriptor ring in start_xmit(); a follow-on "fix" removed the broken remnants altogether. Here's a patch to restore proper locking in the function -- the complement in the interrupt handler has been correct all the time. This *may* have been the reason for the occasional confusion of the chip -- triggering a tx timeout followed by a chip reset sequence -- seen on R4k-based DECstations with the onboard Ethernet interface. Another theory is the confusion is due to an unindentified problem -- perhaps a silicon erratum -- associated with the variation of the MT ASIC used to interface the R4k CPU to the rest of the system on these computers; with its aggressive write-back buffering the design is particularly weakly ordered when it comes to MMIO (in the absence of ordering barriers uncached reads are allowed to bypass earlier uncached writes, even if to the same location), which may trigger all kinds of corner cases in peripheral hardware as well as software. Either way this piece of code is buggy. Signed-off-by:
Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by:
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Tilman Schmidt authored
Clarify calling context and return codes of callback methods, and add a description of the _cmsg structure and helper functions. Impact: documentation Signed-off-by:
Tilman Schmidt <tilman@imap.cc> Signed-off-by:
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Tilman Schmidt authored
The dereferencing of the private pointer cmsg->m in capi_cmsg2str() may cause an Oops in case of an error, which is particularly inconvenient as that function is typically used to format an error message. Add a NULL pointer check to avoid this. Impact: error handling improvement Signed-off-by:
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Tilman Schmidt authored
Add kerneldoc comments for the exported funtions in capiutil.c. Impact: documentation Signed-off-by:
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Tilman Schmidt authored
Change the name of the Kernel CAPI exported function capi_ctr_reseted() to something representing its purpose better. Impact: renaming, no functional change Signed-off-by:
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