- 17 Mar, 2012 17 commits
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Alexander Duyck authored
Instead of keeping a local copy of the skb on the stack for as long as long as we do it makes sense to instead just place it on the first tx_buffer structure so that we can save space on the stack and avoid unnecessary read/write operations copying the pointer out of the stack and onto the ring later. Signed-off-by:
Alexander Duyck <alexander.h.duyck@intel.com> Tested-by:
Stephen Ko <stephen.s.ko@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Alexander Duyck authored
A separate value was added to track Tx completions in order to determine if the Tx unit was hung. However we can do the same thing using the number of packets completed without having to add another stat to the Tx ring. Signed-off-by:
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Alexander Duyck authored
This change makes it more likely that the descriptor flags setup will use cmov instructions instead of conditional jumps when setting up the flags. The advantage to this is that the code should just flow a bit more smoothly. To do this it is necessary to set the TX_FLAGS_CSUM bit in tx_flags when doing TSO so that we also do the checksum in addition to the segmentation offload. Signed-off-by:
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Alexander Duyck authored
This change makes certain that any packet we attempt to transmit will meet minimum size requirements for the hardware. Signed-off-by:
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Alexander Duyck authored
This change is meant to just cleanup the logic in ixgbe_change_mtu since we are making it unnecessarily complex due to a workaround required for 82599 when SR-IOV is enabled. Signed-off-by:
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Alexander Duyck authored
This patch replaces the existing Rx hot-path in the ixgbe driver with a new implementation that is based on performing a double buffered receive. The ixgbe driver already had something similar in place for its' packet split path, however in that case we were still receiving the header for the packet into the sk_buff. The big change here is the entire receive path will receive into pages only, and then pull the header out of the page and copy it into the sk_buff data. There are several motivations behind this approach. First, this allows us to avoid several cache misses as we were taking a set of cache misses for allocating the sk_buff and then another set for receiving data into the sk_buff. We are able to avoid these misses on receive now as we allocate the sk_buff when data is available. Second we are able to see a considerable performance gain when an IOMMU is enabled because we are no longer unmapping every buffer on receive. Instead we can delay the unmap until we are unable to use the page, and instead we can simply call sync_single_range on the half of the page that contains new data. Finally we are able to drop a considerable amount of code from the driver as we no longer have to support 2 different receive modes, packet split and one buffer. This allows us to optimize the Rx path further since less branching is required. Signed-off-by:
Ross Brattain <ross.b.brattain@intel.com> Tested-by:
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Ben Greear authored
This allows the NIC to receive all frames available, including those with bad FCS, ethernet control frames, and more. Tested by sending frames with bad FCS. Signed-off-by:
Ben Greear <greearb@candelatech.com> Tested-by:
Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by:
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Ben Greear authored
Including bad FCS, used generate frames with bad FCS to test other system's handling of RX of bad packets. Signed-off-by:
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Ben Greear authored
This allows the NIC to receive all frames available, including those with bad FCS, un-matched vlans, ethernet control frames, and more. Tested by sending frames with bad FCS. Signed-off-by:
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Ben Greear authored
Including bad FCS, used generate frames with bad FCS to test other system's handling of RX of bad packets. Signed-off-by:
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françois romieu authored
- add eni_do_release() to balance eni_do_init - turn the zeroes DMA area into a per device data Signed-off-by:
Francois Romieu <romieu@fr.zoreil.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Philipp Zabel authored
This patch adds clk_prepare/clk_unprepare calls to the pxaficp_ir driver by using the helper functions clk_prepare_enable and clk_disable_unprepare. Signed-off-by:
Philipp Zabel <philipp.zabel@gmail.com> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Haojian Zhuang <haojian.zhuang@marvell.com> Cc: Samuel Ortiz <samuel@sortiz.org> Signed-off-by:
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Neil Horman authored
I found recently that the arp_process function which handles all of our received arp frames, is using IPV4_DEVCONF_ALL macro to check the state of the arp_process flag. This seems wrong, as it implies that either none or all of the network interfaces accept gratuitous arps. This patch corrects that, allowing per-interface arp_accept configuration to deviate from the all setting. Note this also brings us into line with the way the arp_filter setting is handled during arp_process execution. Tested this myself on my home network, and confirmed it works as expected. Signed-off-by:
Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> Signed-off-by:
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Alexey Orishko authored
If host is going to autosuspend function with two interfaces and if IP packet has arrived in-between of two usbnet_suspend() callbacks, i.e usbnet_resume() is called in-between, tx data flow is stopped. When autosuspend timer expires and device is put to autosuspend again, tx queue is waked up and data can be sent again. This behavior might be repeated several times in a row. Tested on Intel/ARM. Reviewed-by:
Sjur Brændeland <sjur.brandeland@stericsson.com> Tested-by:
Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com> Signed-off-by:
Alexey Orishko <alexey.orishko@stericsson.com> Acked-by:
Oliver Neukum <oneukum@suse.de> Signed-off-by:
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Stefan Roese authored
This patch adds support to configure the STMMAC ethernet driver via device-tree instead of platform_data. Currently, only the properties needed on SPEAr600 are provided. All other properties should be added once needed on other platforms. Signed-off-by:
Stefan Roese <sr@denx.de> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by:
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Santosh Nayak authored
Change the datatype of "ip_addr" to __be32 as 'ip' should be in big endian format. Adapter needs "ip address" in big endian format stored at lower 32bit of req.word[1]. netxen_config_ipaddr() now receives 'ip' in big endian format. To satisfy adapter's need, use memcpy() to copy byte by byte of 'ip' into lower 32bit of req.word[1]. Mac address and serial number of adapter need to be in little endian format. Change the data type of the related variables to __le32 / __le64 or cast it explicitly to __le32 / __le64 depending upon the requirement. Signed-off-by:
Santosh Nayak <santoshprasadnayak@gmail.com> Signed-off-by:
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Rami Rosen authored
The patch removes unused stats member in pxa168 network driver. Signed-off-by:
Rami Rosen <ramirose@gmail.com> Signed-off-by:
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- 16 Mar, 2012 5 commits
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John W. Linville authored
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem Conflicts: drivers/net/wireless/ath/ath9k/hw.c
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Alexey Orishko authored
Changes: - removed a limit for amount of datagrams for IN NTB - using pointer to traverse NTB in rx_fixup() - renamed "temp" to "len" in rx_fixup() - do NTB sequence number check in rx path Tested on Intel/ARM. Reviewed-by:
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Alexey Orishko authored
Changes/fixes: - inform device if max_datagram_size was changed by host - max_datagram_size can't be bigger MTU in ETH func descr - fix constants definitions to enable running CAIF service over NCM Tested on Intel/ARM. Reviewed-by:
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Alexey Orishko authored
Changes: - use high resolution timer latency became approx. 10-15 times less than before - use taklet for sending remaining data in tx path Tested on Intel/ARM. Reviewed-by:
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Eric Dumazet authored
asix_rx_fixup() is complex, and does some unnecessary memory copies (at least on x86 where NET_IP_ALIGN is 0) Also, it tends to provide skbs with a big truesize (4096+256 with MTU=1500) to upper stack, so incoming trafic consume a lot of memory and I noticed early packet drops because we hit socket rcvbuf too fast. Switch to a different strategy, using copybreak so that we provide nice skbs to upper stack (including the NET_SKB_PAD to avoid future head reallocations in some paths) With this patch, I no longer see packets drops or tcp collapses on various tcp workload with a AX88772 adapter. Signed-off-by:
Eric Dumazet <eric.dumazet@gmail.com> Cc: Aurelien Jacobs <aurel@gnuage.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Trond Wuellner <trond@chromium.org> Cc: Grant Grundler <grundler@chromium.org> Cc: Paul Stewart <pstew@chromium.org> Reviewed-by:
Grant Grundler <grundler@chromium.org> Reviewed-by:
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- 15 Mar, 2012 18 commits
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Daniel Drake authored
libertas provides a dump_survey implementation based on reading of a RSSI value. However, this RSSI value is calculated based on the last received beacon from the associated AP - it is not a good way of surveying a channel in general, and even causes an error if the card is not associated to a network. As this is not appropriate as a survey, remove it. This fixes an issue where something in userspace is repeatedly calling site-survey during boot, resulting in many repeated errors as the RSSI value cannot be read before associating. Signed-off-by:
Daniel Drake <dsd@laptop.org> Signed-off-by:
John W. Linville <linville@tuxdriver.com>
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Felix Fietkau authored
Signed-off-by:
Felix Fietkau <nbd@openwrt.org> Signed-off-by:
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Felix Fietkau authored
Makes them more readable and reduces code size Signed-off-by:
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Felix Fietkau authored
Program tx gain through iniModesTxGain like on AR9287 Signed-off-by:
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Felix Fietkau authored
use iniModesFastClock for 5 ghz fast clock specific settings, and iniAdditional for clock/chip specific initval overrides Signed-off-by:
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Felix Fietkau authored
Program the ah->ini_japan2484 INI values which were left out by accident Signed-off-by:
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Felix Fietkau authored
Signed-off-by:
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Felix Fietkau authored
These arrays are unused Signed-off-by:
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Felix Fietkau authored
The ATH9K_HW_CAP_AUTOSLEEP check is bogus, the rx status area needs to be cleared on all non-EDMA PCI/AHB based chipsets anyway. Limit the memset to the rx status area to improve performance. Signed-off-by:
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Felix Fietkau authored
The driver can just check the mask directly Signed-off-by:
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Felix Fietkau authored
By checking for NR_CPUS, the compiler can optimize out register access serialization code on non-SMP kernels Signed-off-by:
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Felix Fietkau authored
The default antenna (as programmed by the INI file) is always 0 anyway. Signed-off-by:
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Felix Fietkau authored
Automatically set the ah->htc_reset_init on init and after PHY disable. Signed-off-by:
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Felix Fietkau authored
TXQ_FLAG_TXOKINT_ENABLE and TXQ_FLAG_TXERRINT_ENABLE are always set and used together, and they share the same bitmask in enum ath9k_tx_queue_flags. Simplify the code that tests for these flags. Signed-off-by:
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Felix Fietkau authored
Signed-off-by:
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Eliad Peller authored
uapsd_queues and uapsd_max_sp_len are relevant only for managed interfaces, and can be configured differently for each vif. Move them from the local struct to sdata->u.mgd, and update the debugfs functions accordingly. Signed-off-by:
Eliad Peller <eliad@wizery.com> Signed-off-by:
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Eliad Peller authored
Some debugfs write functions call kstrto* functions, which assume the string is null-terminated. Make it valid by changing ieee80211_if_write() to use static buffer instead of allocating one, and set the last char to NULL. (The write functions try to parse some integer/mac address, so 64 bytes buffer should be enough) Signed-off-by:
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