- 06 Dec, 2013 40 commits
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Eric Dumazet authored
Some network drivers use dev_kfree_skb_any() and dev_kfree_skb_irq() helpers to free skbs, both for dropped packets and TX completed ones. We need to separate the two causes to get better diagnostics given by dropwatch or "perf record -e skb:kfree_skb" This patch provides two new helpers, dev_consume_skb_any() and dev_consume_skb_irq() to be used for consumed skbs. __dev_kfree_skb_irq() is slightly optimized to remove one atomic_dec_and_test() in fast path, and use this_cpu_{r|w} accessors. Signed-off-by:Eric Dumazet <edumazet@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Zhi Yong Wu authored
Signed-off-by:
Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> Signed-off-by:
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Zhi Yong Wu authored
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Zhi Yong Wu authored
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Zhi Yong Wu authored
Since vhost_dev_init() forever return 0, some branches are never run, therefore need to be removed. Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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Nithin Sujir authored
Signed-off-by:
Nithin Nayak Sujir <nsujir@broadcom.com> Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
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Nithin Sujir authored
commit 4d958473 - "tg3: Workaround rx_discards stat bug", added a workaround for miscounted statistics for multicast packets. This fix needs to be applied to the 5762. Signed-off-by:
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Nithin Sujir authored
The APD bit is 14 and not bit 10. Signed-off-by:
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Nithin Sujir authored
Some link partners have issues if the non-standard 1G half duplex is advertised. This patch adds support for an nvram setting to disable the advertisement. Signed-off-by:
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Nithin Sujir authored
rxbds_empty is an informational statistic signifying that a ring full condition was observed. It does not mean an overflow has occurred. Signed-off-by:
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David S. Miller authored
Florian Fainelli says: ==================== net: of_mdio improvements This patchset contains a few improvements to the MDIO device tree parsing code such as refactoring and parsing the "max-speed" property which is defined in the ePAPR specification. ==================== Signed-off-by: -
Florian Fainelli authored
The 'max-speed' property is optional but defined in the ePAPR specification and now supported by the Linux Device Tree parsing infrastructure. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Florian Fainelli authored
The ARC emac driver was the only in-tree to parse a PHY device 'max-speed' property but yet failed to do it correctly because 'max-speed' is supposed to set a PHY device supported features, not the advertising features as it was done. Now that of_mdiobus_register() takes care of doing that, remove the custom 'max-speed' parsing code. Signed-off-by:
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Florian Fainelli authored
The "max-speed" property is defined per the ePAPR specification to express the maximum speed a PHY supports. Use that property, if present to set the phydev->supported features which properly restricts the PHY within the range of defined speeds. Signed-off-by:
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Florian Fainelli authored
Breakdown the PHY_*_FEATURES into per speed defines such that we can easily re-use them individually. Signed-off-by:
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Florian Fainelli authored
If irq_of_parse_and_map fails to find an interrupt line for a given PHY, we will force the PHY interrupt to be PHY_POLL, completely overriding the previous value that the MDIO bus may have set for us (e.g: PHY_IGNORE_INTERRUPT). In case of failure, just restore the previous value. Signed-off-by:
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Florian Fainelli authored
Use the PHY_MAX_ADDR constant for checking if a MDIO bus address is valid instead of using a plain "32". Signed-off-by:
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Florian Fainelli authored
Since commit 779d835e ("net: of_mdio: scan mdiobus for PHYs without reg property") we have two foreach loops which do pretty much the same thing. Factor the PHY device registration in a function helper: of_mdiobus_register_phy() which takes care of the details and allows for future PHY specific extensions. Signed-off-by:
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wangweidong authored
fix some typos Acked-by:
Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
Wang Weidong <wangweidong1@huawei.com> Signed-off-by:
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wangweidong authored
sctp_peer_needs_update only return 0 or 1. Acked-by:
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wangweidong authored
Make the code more simplification. Acked-by:
Joe Perches <joe@perches.com> Signed-off-by:
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wangweidong authored
kzalloc had initialize the allocated memroy. Therefore, remove the initialize with 0 and the memset. Acked-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-nextDavid S. Miller authored
Jeff Kirsher says: ==================== Intel Wired LAN Driver Updates This series contains updates to i40e only. Christopher Pau provides a patch to set pf_id based on device and function numbers since NICs with ARI enabled can have function numbers larger than 8. Anjali provides 3 i40e patches to update hardware defines to keep in sync with hardware updates. Shannon provides the majority of i40e patches, with 7. First patch clears the admin queue head and tail registers during admin queue shutdown. Then simplifies the admin queue head-tail-len setups to use more virtual registers. Provides several patches to cleanup and fix driver load and reset procedures to make more robust. Lastly, provides an ethtool test for interrupts using the software interrupt. Mitch provides some i40e patches which fixes up VF code in the PF driver, specifically the number of vectors per VF are reported by the hardware does not include vector 0, so we need to account for this when checking. In addition, cleans up debugging messages. Kamil provides an i40e patch to fix the diagnostics test by restricting the diagnostic test length. ==================== Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-nextDavid S. Miller authored
John W. Linville says: ==================== Please pull this batch of updates intended for the 3.14 stream... For the mac80211 bits, Johannes says: "I have various improvements/cleanups/fixes all over, but the shortlog shows that Luis's regulatory work and mesh work from the cozybit folks are the biggest ones, along with the CSA fixes." Along with that, we have big batches of updates to brcmfmac, rtlwifi, and ath9k. There are updates to wcn36xx, rt2x00, and a handful of others as well. ==================== Signed-off-by: -
Eric Dumazet authored
With the introduction of TCP Small Queues, TSO auto sizing, and TCP pacing, we can implement Automatic Corking in the kernel, to help applications doing small write()/sendmsg() to TCP sockets. Idea is to change tcp_push() to check if the current skb payload is under skb optimal size (a multiple of MSS bytes) If under 'size_goal', and at least one packet is still in Qdisc or NIC TX queues, set the TCP Small Queue Throttled bit, so that the push will be delayed up to TX completion time. This delay might allow the application to coalesce more bytes in the skb in following write()/sendmsg()/sendfile() system calls. The exact duration of the delay is depending on the dynamics of the system, and might be zero if no packet for this flow is actually held in Qdisc or NIC TX ring. Using FQ/pacing is a way to increase the probability of autocorking being triggered. Add a new sysctl (/proc/sys/net/ipv4/tcp_autocorking) to control this feature and default it to 1 (enabled) Add a new SNMP counter : nstat -a | grep TcpExtTCPAutoCorking This counter is incremented every time we detected skb was under used and its flush was deferred. Tested: Interesting effects when using line buffered commands under ssh. Excellent performance results in term of cpu usage and total throughput. lpq83:~# echo 1 >/proc/sys/net/ipv4/tcp_autocorking lpq83:~# perf stat ./super_netperf 4 -t TCP_STREAM -H lpq84 -- -m 128 9410.39 Performance counter stats for './super_netperf 4 -t TCP_STREAM -H lpq84 -- -m 128': 35209.439626 task-clock # 2.901 CPUs utilized 2,294 context-switches # 0.065 K/sec 101 CPU-migrations # 0.003 K/sec 4,079 page-faults # 0.116 K/sec 97,923,241,298 cycles # 2.781 GHz [83.31%] 51,832,908,236 stalled-cycles-frontend # 52.93% frontend cycles idle [83.30%] 25,697,986,603 stalled-cycles-backend # 26.24% backend cycles idle [66.70%] 102,225,978,536 instructions # 1.04 insns per cycle # 0.51 stalled cycles per insn [83.38%] 18,657,696,819 branches # 529.906 M/sec [83.29%] 91,679,646 branch-misses # 0.49% of all branches [83.40%] 12.136204899 seconds time elapsed lpq83:~# echo 0 >/proc/sys/net/ipv4/tcp_autocorking lpq83:~# perf stat ./super_netperf 4 -t TCP_STREAM -H lpq84 -- -m 128 6624.89 Performance counter stats for './super_netperf 4 -t TCP_STREAM -H lpq84 -- -m 128': 40045.864494 task-clock # 3.301 CPUs utilized 171 context-switches # 0.004 K/sec 53 CPU-migrations # 0.001 K/sec 4,080 page-faults # 0.102 K/sec 111,340,458,645 cycles # 2.780 GHz [83.34%] 61,778,039,277 stalled-cycles-frontend # 55.49% frontend cycles idle [83.31%] 29,295,522,759 stalled-cycles-backend # 26.31% backend cycles idle [66.67%] 108,654,349,355 instructions # 0.98 insns per cycle # 0.57 stalled cycles per insn [83.34%] 19,552,170,748 branches # 488.244 M/sec [83.34%] 157,875,417 branch-misses # 0.81% of all branches [83.34%] 12.130267788 seconds time elapsed Signed-off-by: -
Yijing Wang authored
Use PCI standard macro dev_is_pci() instead of hardcoding. Signed-off-by:
Yijing Wang <wangyijing@huawei.com> Signed-off-by:
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Yijing Wang authored
Replace local macro DFX_BUS_PCI() with PCI standard macro dev_is_pci(). Acked-by:
Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by:
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Eric Dumazet authored
Compiler doesn't know skb_shinfo(skb) pointer is usually constant. By using a temporary variable, we help generating smaller code. For example, tcp_init_nondata_skb() is inlined after this patch. Signed-off-by:
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Eric Dumazet authored
Remove one useless conditional branch : napi->skb is NULL, so nothing bad can happen. Signed-off-by:
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Eric Dumazet authored
ip6_forward() runs from softirq context, we can use the SNMP macros assuming this. Use same indentation for all IP6_INC_STATS_BH() calls. Signed-off-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
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Duan Jiong authored
Signed-off-by:
Duan Jiong <duanj.fnst@cn.fujitsu.com> Signed-off-by:
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stephen hemminger authored
Fix spelling errors in tun driver. Signed-off-by:
Stephen Hemminger <stephen@networkplumber.org> Acked-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
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Jeff Kirsher authored
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: John Fastabend <john.r.fastabend@intel.com> CC: Alex Duyck <alexander.h.duyck@intel.com> CC: Marcel Holtmann <marcel@holtmann.org> CC: Gustavo Padovan <gustavo@padovan.org> CC: Johan Hedberg <johan.hedberg@gmail.com> CC: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by:
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Jeff Kirsher authored
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: Samuel Ortiz <samuel@sortiz.org> Signed-off-by:
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Jeff Kirsher authored
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: netfilter@vger.kernel.org CC: Pablo Neira Ayuso <pablo@netfilter.org> CC: Patrick McHardy <kaber@trash.net> CC: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by:
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Jeff Kirsher authored
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: Paul Moore <paul@paul-moore.com> Signed-off-by:
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Jeff Kirsher authored
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. Signed-off-by:
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Jeff Kirsher authored
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> CC: James Morris <jmorris@namei.org> CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> CC: Patrick McHardy <kaber@trash.net> Signed-off-by:
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Jeff Kirsher authored
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: Vlad Yasevich <vyasevich@gmail.com> CC: Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
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Jeff Kirsher authored
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: Jay Vosburgh <fubar@us.ibm.com> CC: Veaceslav Falico <vfalico@redhat.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Paul Mackerras <paulus@samba.org> CC: Ian Campbell <ian.campbell@citrix.com> CC: Wei Liu <wei.liu2@citrix.com> CC: Rusty Russell <rusty@rustcorp.com.au> CC: "Michael S. Tsirkin" <mst@redhat.com> Signed-off-by:
Wei Liu <wei.liu2@citrix.com> Signed-off-by:
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