- 27 5月, 2009 4 次提交
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由 Herbert Xu 提交于
By caching frag0_len, we can avoid checking both frag0 and the length separately in skb_gro_header. This helps as skb_gro_header is called four times per packet which amounts to a few million times at 10Gb/s. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Herbert Xu 提交于
Currently skb_gro_header is used for packets which put the hardware header in skb->data with the rest in frags. Since the drivers that need this optimisation all provide completely non-linear packets, we can gain extra optimisations by only performing the frag0 optimisation for completely non-linear packets. In particular, we can simply test frag0 (instead of skb_headlen) to see whether the optimisation is in force. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Herbert Xu 提交于
The function skb_gro_header is called four times per packet which quickly adds up at 10Gb/s. This patch inlines it to allow better optimisations. Some architectures perform multiplication for page_address, which is done by each skb_gro_header invocation. This patch caches that value in skb->cb to avoid the unnecessary multiplications. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Just use the constant 20 to keep things working. If someone is so motivated, this can be converted over to dynamic strings. I tried and it's a lot of work. But for now this is good enough. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 26 5月, 2009 1 次提交
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由 Eric Dumazet 提交于
We would like to get rid of netdev->trans_start = jiffies; that about all net drivers have to use in their start_xmit() function, and use txq->trans_start instead. This can be done generically in core network, as suggested by David. Some devices, (particularly loopback) dont need trans_start update, because they dont have transmit watchdog. We could add a new device flag, or rely on fact that txq->tran_start can be updated is txq->xmit_lock_owner is different than -1. Use a helper function to hide our choice. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 5月, 2009 8 次提交
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由 Alexander Beregalov 提交于
All drivers are already converted to new net_device_ops API and nobody uses old API anymore. Signed-off-by: NAlexander Beregalov <a.beregalov@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Andreas Eversberg 提交于
The new ID is validated by Cologne Chip. LEDs control is also supported. Signed-off-by: NAndreas Eversberg <andreas@eversberg.eu> Signed-off-by: NKarsten Keil <keil@b1-systems.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Karsten Keil 提交于
This patch make debug printk's KERN_DEBUG and also fix some codestyle issues. Signed-off-by: NKarsten Keil <keil@b1-systems.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Andreas Eversberg 提交于
new id for HFC-8S Signed-off-by: NAndreas Eversberg <andreas@eversberg.eu> Signed-off-by: NKarsten Keil <keil@b1-systems.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Karsten Keil 提交于
New version without emulating arch specific stuff for the other architectures, the special IO and init functions for the 8xx microcontroller are in a separate include file. Signed-off-by: NAndreas Eversberg <andreas@eversberg.eu> Signed-off-by: NKarsten Keil <keil@b1-systems.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Andreas Eversberg 提交于
Add IMHOLD_L1 ioctl. The feature will be disabled on closing. Signed-off-by: NAndreas Eversberg <andreas@eversberg.eu> Signed-off-by: NKarsten Keil <keil@b1-systems.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Andreas Eversberg 提交于
Added tx-fifo information for calculation of current delay to sync tx and rx streams for echo canceler. Signed-off-by: NAndreas Eversberg <andreas@eversberg.eu> Signed-off-by: NKarsten Keil <keil@b1-systems.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Andreas Eversberg 提交于
This patch was made by Titus Moldovan and provides IOCTL functions for enabling and disabling the controller's built in watchdog. The use is optional. Signed-off-by: NAndreas Eversberg <andreas@eversberg.eu> Signed-off-by: NKarsten Keil <keil@b1-systems.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 23 5月, 2009 1 次提交
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由 Zhu Yi 提交于
The patch moves some utility functions from mac80211 to cfg80211. Because these functions are doing generic 802.11 operations so they are not mac80211 specific. The moving allows some fullmac drivers to be also benefit from these utility functions. Signed-off-by: NZhu Yi <yi.zhu@intel.com> Signed-off-by: NSamuel Ortiz <samuel.ortiz@intel.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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- 22 5月, 2009 2 次提交
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由 Neil Horman 提交于
Patch to add the ability to detect drops in hardware interfaces via dropwatch. Adds a tracepoint to net_rx_action to signal everytime a napi instance is polled. The dropmon code then periodically checks to see if the rx_frames counter has changed, and if so, adds a drop notification to the netlink protocol, using the reserved all-0's vector to indicate the drop location was in hardware, rather than somewhere in the code. Signed-off-by: NNeil Horman <nhorman@tuxdriver.com> include/linux/net_dropmon.h | 8 ++ include/trace/napi.h | 11 +++ net/core/dev.c | 5 + net/core/drop_monitor.c | 124 ++++++++++++++++++++++++++++++++++++++++++-- net/core/net-traces.c | 4 + net/core/netpoll.c | 2 6 files changed, 149 insertions(+), 5 deletions(-) Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric W. Biederman 提交于
The the PACKET_ADD_MEMBERSHIP and the PACKET_DROP_MEMBERSHIP setsockopt calls for af_packet already has all of the infrastructure needed to subscribe to multiple mac addresses. All that is missing is a flag to say that the address we want to listen on is a unicast address. So introduce PACKET_MR_UNICAST and wire it up to dev_unicast_add and dev_unicast_delete. Additionally I noticed that errors from dev_mc_add were not propagated from packet_dev_mc so fix that. Signed-off-by: NEric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 20 5月, 2009 1 次提交
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由 Sascha Hlusiak 提交于
be sent periodically. The rs_delay can be speficied when adding the PRL entry and defaults to 15 minutes. The RS is sent from every link local adress that's assigned to the tunnel interface. It's directed to the (guessed) linklocal address of the router and is sent through the tunnel. Better: send to ff02::2 encapsuled in unicast directed to router-v4. Signed-off-by: NSascha Hlusiak <contact@saschahlusiak.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 19 5月, 2009 6 次提交
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由 Eric Dumazet 提交于
One point of contention in high network loads is the dst_release() performed when a transmited skb is freed. This is because NIC tx completion calls dev_kree_skb() long after original call to dev_queue_xmit(skb). CPU cache is cold and the atomic op in dst_release() stalls. On SMP, this is quite visible if one CPU is 100% handling softirqs for a network device, since dst_clone() is done by other cpus, involving cache line ping pongs. It seems right place to release dst is in dev_hard_start_xmit(), for most devices but ones that are virtual, and some exceptions. David Miller suggested to define a new device flag, set in alloc_netdev_mq() (so that most devices set it at init time), and carefuly unset in devices which dont want a NULL skb->dst in their ndo_start_xmit(). List of devices that must clear this flag is : - loopback device, because it calls netif_rx() and quoting Patrick : "ip_route_input() doesn't accept loopback addresses, so loopback packets already need to have a dst_entry attached." - appletalk/ipddp.c : needs skb->dst in its xmit function - And all devices that call again dev_queue_xmit() from their xmit function (as some classifiers need skb->dst) : bonding, vlan, macvlan, eql, ifb, hdlc_fr Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric W. Biederman 提交于
Currently when we have a signal pending we have the functionality to restart that the current system call. There are other cases such as nasty lock ordering issues where it makes sense to have a simple fix that uses try lock and restarts the system call. Buying time to figure out how to rework the locking strategy. Signed-off-by: NEric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Johann Baudy 提交于
New packet socket feature that makes packet socket more efficient for transmission. - It reduces number of system call through a PACKET_TX_RING mechanism, based on PACKET_RX_RING (Circular buffer allocated in kernel space which is mmapped from user space). - It minimizes CPU copy using fragmented SKB (almost zero copy). Signed-off-by: NJohann Baudy <johann.baudy@gnu-log.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Wolfgang Grandegger 提交于
This driver adds support for the SJA1000 chips connected to the "platform bus", which can be found on various embedded systems. Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de> Signed-off-by: NWolfgang Grandegger <wg@grandegger.com> Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: NOliver Hartkopp <oliver.hartkopp@volkswagen.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Wolfgang Grandegger 提交于
The CAN network device driver interface provides a generic interface to setup, configure and monitor CAN network devices. It exports a set of common data structures and functions, which all real CAN network device drivers should use. Please have a look to the SJA1000 or MSCAN driver to understand how to use them. The name of the module is can-dev.ko. Furthermore, it adds a Netlink interface allowing to configure the CAN device using the program "ip" from the iproute2 utility suite. For further information please check "Documentation/networking/can.txt" Signed-off-by: NWolfgang Grandegger <wg@grandegger.com> Signed-off-by: NOliver Hartkopp <oliver.hartkopp@volkswagen.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
offsetof(struct net_device, features)=0x44 offsetof(struct net_device, stats.tx_packets)=0x54 offsetof(struct net_device, stats.tx_bytes)=0x5c offsetof(struct net_device, stats.tx_dropped)=0x6c Network drivers that touch dev->stats.tx_packets/stats.tx_bytes in their tx path can slow down SMP operations, since they dirty a cache line that should stay shared (dev->features is needed in rx and tx paths) We could move away stats field in net_device but it wont help that much. (Two cache lines dirtied in tx path, we can do one only) Better solution is to add tx_packets/tx_bytes/tx_dropped in struct netdev_queue because this structure is already touched in tx path and counters updates will then be free (no increase in size) Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 18 5月, 2009 3 次提交
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由 Ben Hutchings 提交于
These registers were originally defined for XENPAK modules, but are also implemented by many other 10G PHYs. Signed-off-by: NBen Hutchings <bhutchings@solarflare.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ben Hutchings 提交于
These do not have an in-kernel user but may be useful to user-space. Signed-off-by: NBen Hutchings <bhutchings@solarflare.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
struct net_device trans_start field is a hot spot on SMP and high performance devices, particularly multi queues ones, because every transmitter dirties it. Is main use is tx watchdog and bonding alive checks. But as most devices dont use NETIF_F_LLTX, we have to lock a netdev_queue before calling their ndo_start_xmit(). So it makes sense to move trans_start from net_device to netdev_queue. Its update will occur on a already present (and in exclusive state) cache line, for free. We can do this transition smoothly. An old driver continue to update dev->trans_start, while an updated one updates txq->trans_start. Further patches could also put tx_bytes/tx_packets counters in netdev_queue to avoid dirtying dev->stats (vlan device comes to mind) Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 16 5月, 2009 1 次提交
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由 Martin K. Petersen 提交于
This patch provides new heuristics for parsing both the form factor and media rotation rate ATA IDENFITY words. The reported ATA version must be 7 or greater and the device must return values defined as valid in the standard. Only then are the characteristics reported to SCSI via the VPD B1 page. This seems like a reasonable compromise to me considering that we have been shipping several kernel releases that key off the rotation rate bit without any version checking whatsoever. With no complaints so far. Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com> Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
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- 15 5月, 2009 1 次提交
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由 Jens Axboe 提交于
This reverts commit fafd688e. Work is progressing to switch away from pdflush as the process backing for flushing out dirty data. So it seems pointless to add more knobs to control pdflush threads. The original author of the patch did not have any specific use cases for adding the knobs, so we can easily revert this before 2.6.30 to avoid having to maintain this API forever. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 14 5月, 2009 3 次提交
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由 Jouni Malinen 提交于
When setting a key with NL80211_CMD_NEW_KEY, we should allow the key sequence number (RSC) to be set in order to allow replay protection to work correctly for group keys. This patch documents this use for nl80211 and adds the couple of missing pieces in nl80211/cfg80211 and mac80211 to support this. In addition, WEXT SIOCSIWENCODEEXT compat processing in cfg80211 is extended to handle the RSC (this was already specified in WEXT, but just not implemented in cfg80211/mac80211). Signed-off-by: NJouni Malinen <jouni.malinen@atheros.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Jouni Malinen 提交于
Add a new NL80211_ATTR_CONTROL_PORT flag for NL80211_CMD_ASSOCIATE to allow user space to indicate that it will control the IEEE 802.1X port in station mode. Previously, mac80211 was always marking the port authorized in station mode. This was enough when drop_unencrypted flag was set. However, drop_unencrypted can currently be controlled only with WEXT and the current nl80211 design does not allow fully secure configuration. Fix this by providing a mechanism for user space to control the IEEE 802.1X port in station mode (i.e., do the same that we are already doing in AP mode). Signed-off-by: NJouni Malinen <jouni.malinen@atheros.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Johannes Berg 提交于
It is currently not possible to modify station flags, but that capability would be very useful. This patch introduces a new nl80211 attribute that contains a set/mask for station flags, and updates the internal API (and mac80211) to mirror that. The new attribute is parsed before falling back to the old so that userspace can specify both (if it can) to work on all kernels. Signed-off-by: NJohannes Berg <johannes@sipsolutions.net> Signed-off-by: NJouni Malinen <jouni.malinen@atheros.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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- 13 5月, 2009 2 次提交
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由 Maciej Sosnowski 提交于
as reported by Alexander Beregalov <a.beregalov@gmail.com> ioatdma 0000:00:08.0: DMA-API: device driver frees DMA memory with wrong function [device address=0x000000007f76f800] [size=2000 bytes] [map ped as single] [unmapped as page] The ioatdma driver was unmapping all regions (either allocated as page or single) using unmap_page. This patch lets dma driver recognize if unmap_single or unmap_page should be used. It introduces two new dma control flags: DMA_COMPL_SRC_UNMAP_SINGLE and DMA_COMPL_DEST_UNMAP_SINGLE. They should be set to indicate dma driver to do dma-unmapping as single (first one for the source, tha latter for the destination). If respective flag is not set, the driver assumes dma-unmapping as page. Signed-off-by: NMaciej Sosnowski <maciej.sosnowski@intel.com> Reported-by: NAlexander Beregalov <a.beregalov@gmail.com> Tested-by: NAlexander Beregalov <a.beregalov@gmail.com> Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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由 Arnd Bergmann 提交于
In order to build the generic syscall table, we need a declaration for every system call. sys_pipe2 was added without a proper declaration, so add this to syscalls.h now. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Cc: Ulrich Drepper <drepper@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 12 5月, 2009 2 次提交
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由 Jouni Malinen 提交于
IEEE 802.11w/D9.0 introduces a mechanism for Action field Category values to be used to select which Action frames are Robust. Public and Vendor-specific categories are marked as not Robust in IEEE 802.11w; HT will be marked not Robust in IEEE 802.11n. A new Vendor-specific Protected category is allocated for Robust vendor-specific Action frames. Another new category, Protected Dual of Action, is introduced for protecting some existing Public Action frames (e.g., IEEE 802.11y protected enablement). Signed-off-by: NJouni Malinen <jouni.malinen@atheros.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Jouni Malinen 提交于
NL80211_CMD_ASSOCIATE request must be able to indicate whether management frame protection (IEEE 802.11w) is being used. mac80211 was able to use MFP in client mode only with WEXT, but the new NL80211_ATTR_USE_MFP attribute will allow this to be done with nl80211, too. Since we are currently using nl80211 for MFP only with drivers that use user space SME, only MFP disabled and required values are used. However, the NL80211_ATTR_USE_MFP attribute is an enum that can be extended with MFP optional in the future, if that is needed with some drivers (e.g., if the RSN IE is generated by the driver). Signed-off-by: NJouni Malinen <jouni.malinen@atheros.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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- 09 5月, 2009 5 次提交
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由 Al Viro 提交于
Put generic_show_options read access to s_options under rcu_read_lock, split save_mount_options() into "we are setting it the first time" (uses in foo_fill_super()) and "we are relacing and freeing the old one", synchronize_rcu() before kfree() in the latter. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
... and make path_lookup_open() static Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Christoph Hellwig 提交于
There's no kernel-only content in it anymore, so move it to header-y and remove the superflous #ifdef __KERNEL__. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
Does equivalent of up_write(&s->s_umount); deactivate_super(s); However, it does not does not unlock it until it's all over. As the result, it's safe to use to dispose of new superblock on ->get_sb() failure exits - nobody will see the sucker until it's all over. Equivalent using up_write/deactivate_super is safe for that purpose if superblock is either safe to use or has NULL ->s_root when we unlock. Normally filesystems take the required precautions, but a) we do have bugs in that area in some of them. b) up_write/deactivate_super sequence is extremely common, so the helper makes sense anyway. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Jeff Mahoney 提交于
With Al Viro's patch to move privroot lookup to fs mount, there's no need to have special code to hide the privroot in reiserfs_lookup. I've also cleaned up the privroot hiding in reiserfs_readdir_dentry and removed the last user of reiserfs_xattrs(). Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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