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2013-08-27e1000e: balance semaphore put/get for 82573Steven La1-0/+5
Steven (cc-ed) noticed an imbalance in semaphore put/get for 82573-based NICs. Don't we need something like the following (untested) patch? Signed-off-by: Steven La <sla@riverbed.com> Acked-by: Arthur Kepner <akepner@riverbed.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27Documentation/networking/: Update Intel wired LAN driver documentationJeff Kirsher8-43/+193
Updates the documentation to the Intel wired LAN drivers. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27bna: firmware update to 3.2.1.1Rasesh Mody1-2/+2
This patch updates the firmware to address the thermal notification issue Signed-off-by: Rasesh Mody <rmody@brocade.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27VMXNET3: Add support for virtual IOMMUAndy King2-83/+138
This patch adds support for virtual IOMMU to the vmxnet3 module. We switch to DMA consistent mappings for anything we pass to the device. There were a few places where we already did this, but using pci_blah(); these have been fixed to use dma_blah(), along with all new occurrences where we've replaced kmalloc() and friends. Also fix two small bugs: 1) use after free of rq->buf_info in vmxnet3_rq_destroy() 2) a cpu_to_le32() that should have been a cpu_to_le64() Acked-by: George Zhang <georgezhang@vmware.com> Acked-by: Aditya Sarwade <asarwade@vmware.com> Signed-off-by: Andy King <acking@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27be2net: implement ethtool set/get_channel hooksSathya Perla3-32/+104
Support is provided only for combined channels. When SR-IOV is not enabled, BE3 supports upto 16 channels and Lancer-R/SH-R support upto 32 channels. Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27be2net: refactor be_setup() to consolidate queue creation routinesSathya Perla2-58/+50
1) Move be_cmd_if_create() above queue create routines to allow TXQ creation (that requires if_handle) to be clubbed with TX-CQ creation. 2) Consolidate all queue create routines into be_setup_queues() Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27be2net: Fix be_cmd_if_create() to use MBOX if MCCQ is not createdSathya Perla1-24/+85
Currently the IF_CREATE FW cmd is issued only *after* MCCQ is created as it was coded to only use MCCQ. By fixing this, cmd_if_create() can be called before MCCQ is created and the same routine for VF provisioning can be called after. This allows for consolidating all the queue create routines by moving the be_cmd_if_create() call above all queue create calls in be_setup(). Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27be2net: refactor be_get_resources() codeSathya Perla6-189/+229
1) use be_resources{} struct to query/store HW resource limits 2) The HW queue/resource limits for BE2/BE3 chips are mostly called out in driver as constants. Code to handle this is scattered across various places in be_setup(). Consolidate this code into BEx_get_resources(). For Lancer-R, Skyhawk-R, these limits are queried from FW. Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27be2net: Fixup profile management routinesVasundhara Volam2-59/+88
1) Parse PCIe descriptor for max-VFs supported by HW 2) Cleanup NIC descriptor parsing in get_func/profile_config() routines 3) Use common struct definitions for v0 and v1 versions of GET_FUNC_CONFIG Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com> Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27be2net: use EQ_CREATEv2 for SH-RSathya Perla4-39/+18
EQ_CREATEv2 explicitly returns the msix-index associated with a EQ. For SH-R this is needed if EQs need to be deleted and re-created without resetting a function. Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27net: tcp_probe: allow more advanced ingress filtering by markDaniel Borkmann1-4/+11
Currently, the tcp_probe snooper can either filter packets by a given port (handed to the module via module parameter e.g. port=80) or lets all TCP traffic pass (port=0, default). When a port is specified, the port number is tested against the sk's source/destination port. Thus, if one of them matches, the information will be further processed for the log. As this is quite limited, allow for more advanced filtering possibilities which can facilitate debugging/analysis with the help of the tcp_probe snooper. Therefore, similarly as added to BPF machine in commit 7e75f93e ("pkt_sched: ingress socket filter by mark"), add the possibility to use skb->mark as a filter. If the mark is not being used otherwise, this allows ingress filtering by flow (e.g. in order to track updates from only a single flow, or a subset of all flows for a given port) and other things such as dynamic logging and reconfiguration without removing/re-inserting the tcp_probe module, etc. Simple example: insmod net/ipv4/tcp_probe.ko fwmark=8888 full=1 ... iptables -A INPUT -i eth4 -t mangle -p tcp --dport 22 \ --sport 60952 -j MARK --set-mark 8888 [... sampling interval ...] iptables -D INPUT -i eth4 -t mangle -p tcp --dport 22 \ --sport 60952 -j MARK --set-mark 8888 The current option to filter by a given port is still being preserved. A similar approach could be done for the sctp_probe module as a follow-up. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27qlcnic: Update version to 5.3.49.Sucheta Chakraborty1-2/+2
Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27qlcnic: dcb: Add support for CEE Netlink interface.Sucheta Chakraborty4-1/+629
o Adapter and driver supports only CEE dcbnl ops. Only GET callbacks within dcbnl ops are supported currently. Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27qlcnic: dcb: Register DCB AEN handler.Sucheta Chakraborty7-2/+137
o Adapter sends Asynchronous Event Notifications to the driver when there are changes in the switch or adapter DCBX configuration. AEN handler updates the driver DCBX parameters. Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27qlcnic: dcb: Get DCB parameters from the adapter.Sucheta Chakraborty7-2/+278
o Populate driver data structures with local, operational, and peer DCB parameters. Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-27qlcnic: dcb: Query adapter DCB capabilities.Sucheta Chakraborty12-0/+345
o Query adapter DCB capabilities and populate local data structures with relevant information. o Add QLCNIC_DCB to Kconfig for enabling/disabling DCB. Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-26openvswitch: Rename key_len to key_endAndy Zhou2-16/+17
Key_end is a better name describing the ending boundary than key_len. Rename those variables to make it less confusing. Signed-off-by: Andy Zhou <azhou@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-08-26openvswitch: Add SCTP supportJoe Stringer6-4/+121
This patch adds support for rewriting SCTP src,dst ports similar to the functionality already available for TCP/UDP. Rewriting SCTP ports is expensive due to double-recalculation of the SCTP checksums; this is performed to ensure that packets traversing OVS with invalid checksums will continue to the destination with any checksum corruption intact. Reviewed-by: Simon Horman <horms@verge.net.au> Signed-off-by: Joe Stringer <joe@wand.net.nz> Signed-off-by: Ben Pfaff <blp@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-08-26ARM: at91/dt: define phy available on sama5d3 mother boardBoris BREZILLON1-0/+8
This patch describe the phy used on atmel sama5d3 mother board: - phy address - phy interrupt pin Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-26net/cadence/macb: add support for dt phy definitionBoris BREZILLON1-7/+34
The macb driver only handle PHY description through platform_data (macb_platform_data). Thus, when using dt you cannot define phy properties like phy address or phy irq pin. This patch makes use of the of_mdiobus_register to add support for phy device definition using dt. A fallback to the autoscan procedure is added in case there is no phy devices defined in dt. Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-25ipip: potential race in ip_tunnel_init_net()Dan Carpenter1-6/+4
Eric Dumazet says that my previous fix for an ERR_PTR dereference (ea857f28ab 'ipip: dereferencing an ERR_PTR in ip_tunnel_init_net()') could be racy and suggests the following fix instead. Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-25bonding: fix error return code in bond_enslave()Wei Yongjun1-1/+2
Fix to return a negative error code in the add bond vlan ids error handling case instead of 0, as done elsewhere in this function. Introduced by commit 1ff412ad7714f6952f76ffd77f0a7f2f563288a1. (bonding: change the bond's vlan syncing functions with the standard ones) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Nikolay Aleksandrov <nikolay@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-23net: Add NEXTHDR_SCTP to ipv6.hJoe Stringer1-0/+1
Signed-off-by: Joe Stringer <joe@wand.net.nz> Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-08-23openvswitch: Mega flow implementationAndy Zhou7-513/+1171
Add wildcarded flow support in kernel datapath. Wildcarded flow can improve OVS flow set up performance by avoid sending matching new flows to the user space program. The exact performance boost will largely dependent on wildcarded flow hit rate. In case all new flows hits wildcard flows, the flow set up rate is within 5% of that of linux bridge module. Pravin has made significant contributions to this patch. Including API clean ups and bug fixes. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Andy Zhou <azhou@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-08-23openvswitch: check CONFIG_OPENVSWITCH_GRE in makefileCong Wang2-4/+4
Cc: Jesse Gross <jesse@nicira.com> Cc: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-08-23openvswitch: Fix argument descriptions in vport.c.Justin Pettit1-1/+2
Signed-off-by: Justin Pettit <jpettit@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-08-23openvswitch:: link upper device for port devicesJiri Pirko1-1/+19
Link upper device properly. That will make IFLA_MASTER filled up. Set the master to port 0 of the datapath under which the port belongs. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-08-23openvswitch: Use non rcu hlist_del() flow table entry.Pravin B Shelar1-1/+1
Flow table destroy is done in rcu call-back context. Therefore there is no need to use rcu variant of hlist_del(). Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-08-23openvswitch: Use RCU lock for dp dump operation.Pravin B Shelar1-6/+7
RCUfy dp-dump operation which is already read-only. This makes all ovs dump operations lockless. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-08-23openvswitch: Use RCU lock for flow dump operation.Pravin B Shelar1-8/+9
Flow dump operation is read-only operation. There is no need to take ovs-lock. Following patch use rcu-lock for dumping flows. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-08-23lib/lz4: correct the LZ4 licenseRichard Laager3-7/+7
The LZ4 code is listed as using the "BSD 2-Clause License". Signed-off-by: Richard Laager <rlaager@wiktel.com> Acked-by: Kyungsik Lee <kyungsik.lee@lge.com> Cc: Chanho Min <chanho.min@lge.com> Cc: Richard Yao <ryao@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ The 2-clause BSD can be just converted into GPL, but that's rude and pointless, so don't do it - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-23memcg: get rid of swapaccount leftoversMichal Hocko3-3/+2
The swapaccount kernel parameter without any values has been removed by commit a2c8990aed5a ("memsw: remove noswapaccount kernel parameter") but it seems that we didn't get rid of all the left overs. Make sure that menuconfig help text and kernel-parameters.txt are clear about value for the paramter and remove the stalled comment which is not very much useful on its own. Signed-off-by: Michal Hocko <mhocko@suse.cz> Reported-by: Gergely Risko <gergely@risko.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-23nilfs2: fix issue with counting number of bio requests for BIO_EOPNOTSUPP error detectionVyacheslav Dubeyko1-1/+1
Fix the issue with improper counting number of flying bio requests for BIO_EOPNOTSUPP error detection case. The sb_nbio must be incremented exactly the same number of times as complete() function was called (or will be called) because nilfs_segbuf_wait() will call wail_for_completion() for the number of times set to sb_nbio: do { wait_for_completion(&segbuf->sb_bio_event); } while (--segbuf->sb_nbio > 0); Two functions complete() and wait_for_completion() must be called the same number of times for the same sb_bio_event. Otherwise, wait_for_completion() will hang or leak. Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Tested-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-23nilfs2: remove double bio_put() in nilfs_end_bio_write() for BIO_EOPNOTSUPP errorVyacheslav Dubeyko1-2/+1
Remove double call of bio_put() in nilfs_end_bio_write() for the case of BIO_EOPNOTSUPP error detection. The issue was found by Dan Carpenter and he suggests first version of the fix too. Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Tested-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-23drivers/platform/olpc/olpc-ec.c: initialise earlierDaniel Drake1-1/+1
Being a low-level component, various drivers (e.g. olpc-battery) assume that it is ok to communicate with the OLPC Embedded Controller during probe. Therefore the OLPC EC driver must be initialised before other drivers try to use it. This was the case until it was recently moved out of arch/x86 and restructured around commits ac2504151f5a ("Platform: OLPC: turn EC driver into a platform_driver") and 85f90cf6ca56 ("x86: OLPC: switch over to using new EC driver on x86"). Use arch_initcall so that olpc-ec is readied earlier, matching the previous behaviour. Fixes a regression introduced in Linux-3.6 where various drivers such as olpc-battery and olpc-xo1-sci failed to load due to an inability to communicate with the EC. The user-visible effect was a lack of battery monitoring, missing ebook/lid switch input devices, etc. Signed-off-by: Daniel Drake <dsd@laptop.org> Cc: Andres Salomon <dilinger@queued.net> Cc: Paul Fox <pgf@laptop.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-22fs_enet: cleanup clock API useGerhard Sittig2-0/+23
make the Freescale ethernet driver get, prepare and enable the FEC clock during probe(); disable and unprepare the clock upon remove(), put is done by the devm approach; hold a reference to the clock over the period of use. clock lookup is non-fatal as not all platforms provide clock specs in their device tree; failure to enable specified clocks is fatal. Signed-off-by: Gerhard Sittig <gsi@denx.de> Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22fs_enet: silence a build warning (unused variable)Gerhard Sittig1-1/+0
Since commit 720a43efd30f04a0a492c85fb997361c44fbae05 (drivers:net: Remove unnecessary OOM messages after netdev_alloc_skb) there is a build warning: drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c: In function 'tx_skb_align_workaround': drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c:586:26: warning: unused variable 'fep' Fix it. Signed-off-by: Gerhard Sittig <gsi@denx.de> Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22net: sctp_probe: simplify code by using %pISc format specifierDaniel Borkmann1-7/+2
We can simply use the %pISc format specifier that was recently added and thus remove some code that distinguishes between IPv4 and IPv6. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22net: ethernet: davinci_cpdma: export cpdma_chan_get_statsDaniel Mack1-0/+1
This is needed when the cpsw driver is built as module. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22ipv4: expose IPV4_DEVCONFstephen hemminger2-33/+35
IP sends device configuration (see inet_fill_link_af) as an array in the netlink information, but the indices in that array are not exposed to userspace through any current santized header file. It was available back in 2.6.32 (in /usr/include/linux/sysctl.h) but was broken by: commit 02291680ffba92e5b5865bc0c5e7d1f3056b80ec Author: Eric W. Biederman <ebiederm@xmission.com> Date: Sun Feb 14 03:25:51 2010 +0000 net ipv4: Decouple ipv4 interface parameters from binary sysctl numbers Eric was solving the sysctl problem but then the indices were re-exposed by a later addition of devconf support for IPV4 commit 9f0f7272ac9506f4c8c05cc597b7e376b0b9f3e4 Author: Thomas Graf <tgraf@infradead.org> Date: Tue Nov 16 04:32:48 2010 +0000 ipv4: AF_INET link address family Putting them in /usr/include/linux/ip.h seemed the logical match for the DEVCONF_ definitions for IPV6 in /usr/include/linux/ip6.h Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22ipv6: handle Redirect ICMP Message with no Redirected Header optionDuan Jiong3-1/+26
rfc 4861 says the Redirected Header option is optional, so the kernel should not drop the Redirect Message that has no Redirected Header option. In this patch, the function ip6_redirect_no_header() is introduced to deal with that condition. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
2013-08-22be2net: fix disabling TX in be_close()Sathya Perla1-1/+1
commit fba875591 ("disable TX in be_close()") disabled TX in be_close() to protect be_xmit() from touching freed up queues in the AER recovery flow. But, TX must be disabled *before* cleaning up TX completions in the close() path, not after. This allows be_tx_compl_clean() to free up all TX-req skbs that were notified to the HW. Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22net: tcp_probe: add IPv6 supportDaniel Borkmann1-10/+44
The tcp_probe currently only supports analysis of IPv4 connections. Therefore, it would be nice to have IPv6 supported as well. Since we have the recently added %pISpc specifier that is IPv4/IPv6 generic, build related sockaddress structures from the flow information and pass this to our format string. Tested with SSH and HTTP sessions on IPv4 and IPv6. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22net: tcp_probe: kprobes: adapt jtcp_rcv_established signatureDaniel Borkmann1-1/+8
This patches fixes a rather unproblematic function signature mismatch as the const specifier was missing for the th variable; and next to that it adds a build-time assertion so that future function signature mismatches for kprobes will not end badly, similarly as commit 22222997 ("net: sctp: add build check for sctp_sf_eat_sack_6_2/jsctp_sf_eat_sack") did it for SCTP. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22net: tcp_probe: also include rcv_wnd next to snd_wndDaniel Borkmann1-2/+4
It is helpful to sometimes know the TCP window sizes of an established socket e.g. to confirm that window scaling is working or to tweak the window size to improve high-latency connections, etc etc. Currently the TCP snooper only exports the send window size, but not the receive window size. Therefore, also add the receive window size to the end of the output line. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22ethernet: broadcom: remove unnecessary platform_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22ethernet: moxa: remove unnecessary platform_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22tcp: increase throughput when reordering is highYuchung Cheng1-12/+20
The stack currently detects reordering and avoid spurious retransmission very well. However the throughput is sub-optimal under high reordering because cwnd is increased only if the data is deliverd in order. I.e., FLAG_DATA_ACKED check in tcp_ack(). The more packet are reordered the worse the throughput is. Therefore when reordering is proven high, cwnd should advance whenever the data is delivered regardless of its ordering. If reordering is low, conservatively advance cwnd only on ordered deliveries in Open state, and retain cwnd in Disordered state (RFC5681). Using netperf on a qdisc setup of 20Mbps BW and random RTT from 45ms to 55ms (for reordering effect). This change increases TCP throughput by 20 - 25% to near bottleneck BW. A special case is the stretched ACK with new SACK and/or ECE mark. For example, a receiver may receive an out of order or ECN packet with unacked data buffered because of LRO or delayed ACK. The principle on such an ACK is to advance cwnd on the cummulative acked part first, then reduce cwnd in tcp_fastretrans_alert(). Signed-off-by: Yuchung Cheng <ycheng@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22SolutionEngine7724: fix typo in Ether platform dataSergei Shtylyov1-1/+1
Commit bd61224b1cbec096694e89c4187119c8576fe186 (SolutionEngine7724: fix Ether support) has a typo in the 'phy_interface' field name of the platform data which causes build error -- fix it. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-22SH7619: fix typo in Ether platform dataSergei Shtylyov1-1/+1
Commit 06a64f91da72cb5827e2bedef2ead60a123fd66e (SH7619: fix Ether support) has a typo in the 'phy_interface' field name of the platform data which causes build error -- fix it. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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