- 06 Jan, 2014 24 commits
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Vijay Subramanian authored
Proportional Integral controller Enhanced (PIE) is a scheduler to address the bufferbloat problem. >From the IETF draft below: " Bufferbloat is a phenomenon where excess buffers in the network cause high latency and jitter. As more and more interactive applications (e.g. voice over IP, real time video streaming and financial transactions) run in the Internet, high latency and jitter degrade application performance. There is a pressing need to design intelligent queue management schemes that can control latency and jitter; and hence provide desirable quality of service to users. We present here a lightweight design, PIE(Proportional Integral controller Enhanced) that can effectively control the average queueing latency to a target value. Simulation results, theoretical analysis and Linux testbed results have shown that PIE can ensure low latency and achieve high link utilization under various congestion situations. The design does not require per-packet timestamp, so it incurs very small overhead and is simple enough to implement in both hardware and software. " Many thanks to Dave Taht for extensive feedback, reviews, testing and suggestions. Thanks also to Stephen Hemminger and Eric Dumazet for reviews and suggestions. Naeem Khademi and Dave Taht independently contributed to ECN support. For more information, please see technical paper about PIE in the IEEE Conference on High Performance Switching and Routing 2013. A copy of the paper can be found at ftp://ftpeng.cisco.com/pie/. Please also refer to the IETF draft submission at http://tools.ietf.org/html/draft-pan-tsvwg-pie-00 All relevant code, documents and test scripts and results can be found at ftp://ftpeng.cisco.com/pie/. For problems with the iproute2/tc or Linux kernel code, please contact Vijay Subramanian (vijaynsu@cisco.com or subramanian.vijay@gmail.com) Mythili Prabhu (mysuryan@cisco.com) Signed-off-by:
Vijay Subramanian <subramanian.vijay@gmail.com> Signed-off-by:
Mythili Prabhu <mysuryan@cisco.com> CC: Dave Taht <dave.taht@bufferbloat.net> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
net/netfilter/nfnetlink_queue_core.c: In function 'nfqnl_put_sk_uidgid': net/netfilter/nfnetlink_queue_core.c:304:35: error: 'TCP_TIME_WAIT' undeclared (first use in this function) net/netfilter/nfnetlink_queue_core.c:304:35: note: each undeclared identifier is reported only once for each function it appears in make[3]: *** [net/netfilter/nfnetlink_queue_core.o] Error 1 Just a missing include of net/tcp_states.h Reported-by:
Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nftablesDavid S. Miller authored
Pablo Neira Ayuso says: <pablo@netfilter.org> ==================== nftables updates for net-next The following patchset contains nftables updates for your net-next tree, they are: * Add set operation to the meta expression by means of the select_ops() infrastructure, this allows us to set the packet mark among other things. From Arturo Borrero Gonzalez. * Fix wrong format in sscanf in nf_tables_set_alloc_name(), from Daniel Borkmann. * Add new queue expression to nf_tables. These comes with two previous patches to prepare this new feature, one to add mask in nf_tables_core to evaluate the queue verdict appropriately and another to refactor common code with xt_NFQUEUE, from Eric Leblond. * Do not hide nftables from Kconfig if nfnetlink is not enabled, also from Eric Leblond. * Add the reject expression to nf_tables, this adds the missing TCP RST support. It comes with an initial patch to refactor common code with xt_NFQUEUE, again from Eric Leblond. * Remove an unused variable assignment in nf_tables_dump_set(), from Michal Nazarewicz. * Remove the nft_meta_target code, now that Arturo added the set operation to the meta expression, from me. * Add help information for nf_tables to Kconfig, also from me. * Allow to dump all sets by specifying NFPROTO_UNSPEC, similar feature is available to other nf_tables objects, requested by Arturo, from me. * Expose the table usage counter, so we can know how many chains are using this table without dumping the list of chains, from Tomasz Bursztyka. ==================== Signed-off-by: -
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. Majority of this series contains patches from Greg and Mitch to fix up or add functionality to the PF/VF driver interactions. Notably, a fix for SR-IOV VF port VLAN which resolved the problem of port VLAN configurations not being persistent across VF driver loads and unloads and enable/disable of the feature. Also do not enable the default port on the VEB, which is designed only to bridge the PF to an Open vSwitch or bridge. Another fix to resolve a possible memory corruption condition where ARQ messages are written to random memory locations. Fix a problem where the 'ip link show' command would display stale link address information after the link address was set via the 'ip link set' command. Anjali provides several patches, one which saves information that can be used while cleaning the Tx ring and useful in detecting Tx hangs. Then provides a fixes to the admin queue shutdown function to ensure we are shutting down the queue in the shutdown path and ensure ASQ is alive before issuing the admin queue command. Shannon provides a fix for get/update vsi params where the incorrect struct was being used. ==================== Signed-off-by: -
Anjali Singhai Jain authored
If the device is not in a working state avoid making admin queue (AQ) calls that rely on a working AQ. Change-Id: Ifbba6d257b3a5b51bfe92938c04088c0baa21433 Signed-off-by:
Anjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by:
Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by:
Kavindya Deegala <kavindya.s.deegala@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Anjali Singhai Jain authored
Driver needs to make sure the send queue is alive before trying to use it. Chagne-Id: I9bd1f6159c45c98e63f562e3a8dfb57edfe50e13 Signed-off-by:
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Anjali Singhai Jain authored
Always call the AQ call to shutdown the queue in the shutdown path. Check ASQ is alive before issuing the AQ command since we might be resetting to recover from a bad state in which case we should not issue the AQ command. Use the register variable for length so it can be used by PF, VF and GL AQ commands. Change-Id: Ic3d305687ea3f1a6afa84e864b7a27bd38a9af32 Signed-off-by:
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Greg Rose authored
The VF VSI Port VLAN settings still allow the user to view VLAN tag in the descriptor. Fix the settings to hide the VLAN ID from the VF. The VF is not supposed to be aware it is on a VLAN in the Port VLAN scenario. Change-Id: I976f2bacb455dbb750f8c53a781c689f02cb8907 Signed-off-by:
Greg Rose <gregory.v.rose@intel.com> Signed-off-by:
Sibai Li <sibai.li@intel.com> Signed-off-by:
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Shannon Nelson authored
The get_vsi_params and update_vsi_params functions were using a different command struct that just happened to have an seid element in the right place and so worked correctly anyway. This patch fixes the functions to use the right data struct. There is no actual logic change. Change-Id: I513b5e1dc293dfd5b2ba4fa443cbdbfa608d9d19 Signed-off-by:
Shannon Nelson <shannon.nelson@intel.com> Signed-off-by:
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Greg Rose authored
Fix a problem where the 'ip link show' command would display stale link address information after the link address was set via the 'ip link set' command. In addition, fix problem with the user being allowed to overwrite the administratively set VF MAC address. Change-Id: I669ed14e55f2b633ef7b456b713632b08468671c Signed-off-by:
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Mitch Williams authored
When communicating with VF devices over the AQ, the FW refers to the VF by its global VF ID, not local the VF ID with reference to its parent PF. Since the global and local VF IDs are identical for PF 0, the code worked correctly on PF 0. However, we cannot just use global IDs throughout the code as most of the other references to the VF (VSI setup, register offsets, etc.) require the local VF ID. Instead, we just add or subtract our base VF ID when sending and receiving AQ messages. Change-Id: I92f4332b4876bc68b2f9af9ebf48761f63b6bd97 Signed-off-by:
Mitch Williams <mitch.a.williams@intel.com> Signed-off-by:
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Mitch Williams authored
When SR-IOV is disabled, the (now nonexistent) virtual function devices undergo a VFLR event. We don't need to handle this event because the VFs are gone, but we do need to tell the HW that they are complete. This fixes an issue with a phantom VFLR and broken VFs when SR-IOV is re-enabled. Change-Id: I7580b49ded0158172a85b14661ec212af77000c8 Signed-off-by:
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Mitch Williams authored
Shockingly, the compiler didn't flag this uninitialized variable. This fixes a potential memory corruption condition where ARQ messages are written to random memory locations. Change-Id: Iac82f4562d2bf3f42df3f3b2163d9cbed2160135 Signed-off-by:
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Mitch Williams authored
Use struct assignment rather than an expensive memory copy. Change-Id: I1d18d510774dfd41a9c1250cdef238a4187528f5 Signed-off-by:
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Greg Rose authored
Enabling the default port on the VEB causes all outgoing traffic from virtual functions to be copied to the physical function. The default port is only supposed to be used if you wish to bridge the physical function to a SW switch such as Open vSwitch or the Linux bridge. That allows the SW switch to route traffic to VMs that are not using a virtual function. Eventually we'll want to implement the ndo_fdb_add, ndo_fdb_del, and ndo_fdb_dump functions. The ndo_fdb_add function would set the default port on the VEB in those cases where the MAC/VLAN address filters have overflowed. Normally we would not want to use it. Change-Id: I3990f0384fff2840c4e43bc0955dd0b701380852 Signed-off-by:
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Mitch Williams authored
We don't need to read the base VF id. It's already stashed in the HW struct. Change-Id: Ib81e2f76fc40b12c966e014a856b481912cafefc Signed-off-by:
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Jesse Brandeburg authored
Trivial whitespace fix. Change-Id: Ib7c70891a33c4b3d200c69367549d0dbdee0f076 Signed-off-by:
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Greg Rose authored
This patch fixes two different problems. 1) The port VLAN configuration was not persistent across VF driver loads and unloads. 2) The port VLAN configuration was only correct the first time it was set. Switching the port VLAN on and off would cause subsequent VLAN configurations to be corrupted in the VSI. Ensure that the correct bits are being set for the VSI port VLAN configuration. Change-Id: I7ebf5329f77eb8d73ccd3324eb346b3abeea737d Signed-off-by:
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Anjali Singhai Jain authored
Save information that we can use while cleaning the tx ring. Also record the time_stamp since we will need it to check tx hangs. Change-Id: Ia3f1c17f6fec9bcb7fef2542d77eac7f6c4f115c Signed-off-by:
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Eyal Perry authored
Check if the device get enough bandwidth from the entire PCI chain to satisfy its capabilities. This patch determines the PCIe device's bandwidth capabilities by reading its PCIe Link Capabilities registers and then call the pcie_get_minimum_link function to ensure that the adapter is hooked into a slot which is capable of providing the necessary bandwidth capabilities. Signed-off-by:
Eyal Perry <eyalpe@mellanox.com> Signed-off-by:
Amir Vadai <amirv@mellanox.com> Signed-off-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. Anjali provides two cleanups to remove unnecessary code and a fix to resolve debugfs dumping only half the NVM. Then provides a fix to ethtool NVM reads where shadow RAM was used instead of actual NVM reads. Jesse provides a couple of fixes, one removes custom i40e functions which duplicate existing kernel functionality. Second fixes constant cast issues by replacing __constant_htons with htons. Mitch provides a couple of fixes for the VF interfaces in i40e. First provides a fix to guard against VF message races with can cause a panic. Second fix reinitializes the buffer size each time we clean the ARQ, because subsequent messages can be truncated. Lastly adds functionality to enable/disable ICR 0 dynamically. Vasu adds a simple guard against multiple includes of the i40e_txrx.h file. Shannon provides a couple of fixes, first fix swaps a couple of lines around in the error handling if the allocation for the VSI array fails. Second fixes an issue where we try to free the q_vector that has not been setup which can panic the kernel. David provides a patch to save off the point to memory and the length of 2 structs used in the admin queue in order to store all info about allocated kernel memory. Neerav fixes ring allocation where allocation and clearing of rings for a VSI should be using the alloc_queue_pairs and not num_queue_pairs. Then removes the unused define for multi-queue enabled. ==================== Signed-off-by: -
Hannes Frederic Sowa authored
macvlan needs vlan_pcpu_stats so make it visible even if compiling without VLAN_8021Q support. Otherwise a very long compiler error happens. Fixes: cdf3e274 ("macvlan: unify macvlan_pcpu_stats and vlan_pcpu_stats") Cc: Li RongQing <roy.qing.li@gmail.com> Signed-off-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-By:
Li RongQing <roy.qing.li@gmail.com> Signed-off-by:
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Daniel Borkmann authored
netdev_kobject_init() is only being called from __init context, that is, net_dev_init(), so annotate it with __init as well, thus the kernel can take this as a hint that the function is used only during the initialization phase and free up used memory resources after its invocation. Signed-off-by:
Daniel Borkmann <dborkman@redhat.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller authored
Pablo Neira Ayuso says: ==================== netfilter/IPVS updates for net-next The following patchset contains Netfilter updates for your net-next tree, they are: * Add full port randomization support. Some crazy researchers found a way to reconstruct the secure ephemeral ports that are allocated in random mode by sending off-path bursts of UDP packets to overrun the socket buffer of the DNS resolver to trigger retransmissions, then if the timing for the DNS resolution done by a client is larger than usual, then they conclude that the port that received the burst of UDP packets is the one that was opened. It seems a bit aggressive method to me but it seems to work for them. As a result, Daniel Borkmann and Hannes Frederic Sowa came up with a new NAT mode to fully randomize ports using prandom. * Add a new classifier to x_tables based on the socket net_cls set via cgroups. These includes two patches to prepare the field as requested by Zefan Li. Also from Daniel Borkmann. * Use prandom instead of get_random_bytes in several locations of the netfilter code, from Florian Westphal. * Allow to use the CTA_MARK_MASK in ctnetlink when mangling the conntrack mark, also from Florian Westphal. * Fix compilation warning due to unused variable in IPVS, from Geert Uytterhoeven. * Add support for UID/GID via nfnetlink_queue, from Valentina Giusti. * Add IPComp extension to x_tables, from Fan Du. ==================== Signed-off-by:
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- 05 Jan, 2014 16 commits
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Anjali Singhai Jain authored
Driver needs to clean PBA only when interrupts are turned off and we are polling instead. Change-Id: Ic0c1da761bd3abe7f73b1cc8bcddf8e3a232fd0f Signed-off-by:
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Anjali Singhai Jain authored
These functions don't need a prototype as they are defined in the file before they are called. Change-Id: Ie17ffad4a29a9c0df434c4ebc4681128a6095c65 Signed-off-by:
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Neerav Parikh authored
Remove references to I40E_FLAG_MQ_ENABLED from the code as it doesn't seem to be used anywhere. Change-Id: I4c89fb65b2cdd26fbb0c58fccbbb4b03f0e5f1b3 Signed-off-by:
Neerav Parikh <Neerav.Parikh@intel.com> Signed-off-by:
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Neerav Parikh authored
The allocation and clearing of rings for a VSI should be using the alloc_queue_pairs and not num_queue_pairs. The alloc_queue_pairs per VSI is a pre-allocated number of queues assigned to a VSI; based on number of TCs enabled only certain number of queues may be used from that. This is mainly valid only for the LAN VSI case as that is the only VSI that may be enabled with multiple traffic classes. In the future the number of TCs may change based on DCBX configuration. The actual number of queues that are enabled/configured is based on the number of TCs enabled for a given VSI and that is stored in num_queue_pairs. With this change num_[tr]x_queues is unused so remove them. Change-Id: I9c2f84778bb25f7313c630e9b002a0caa883ce29 Signed-off-by:
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Shannon Nelson authored
Don't try to free a q_vector that hasn't been set up as it can panic the kernel. Change-Id: I0650cc6c441d0779788c522c790293c276d14fbc Signed-off-by:
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David Cassard authored
Save both a pointer to memory and the length in order to store all info about allocated kernel memory. This patch changes some adminq allocations to preserve the full i40e_dma_mem/i40e_virt_mem structs for every allocation. Change-Id: Ibcf96159aba4ba61f839d16d87d19478df28e630 Signed-off-by:
David Cassard <david.g.cassard@intel.com> Signed-off-by:
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Shannon Nelson authored
Swap a couple lines around in the error handling if the kzalloc() for the pf->vsi array fails. This was causing a kernel BUG because the call to i40e_clear_interrupt_scheme() was assuming the pf->vsi[] array existed. In this fix it is possible that i40e_reset_interrupt_capability() will get called twice, but this is a safe action. Change-Id: I939163ccaa89baac7511556d36bc873864c35ae1 Signed-off-by:
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Mitch Williams authored
When cleaning the ARQ, we must reinitialize the buffer size each time we go through the loop, because i40e_clean_arq_element returns the message length in the same field. Without this change, subsequent messages can be truncated to the length of the previous message. Change-Id: Ic9c32ff843faf0fc3196d21351a1c3a60c6158eb Signed-off-by:
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Mitch Williams authored
Introduce i40e_irq_dynamic_disable_icr0 and use it and its previously- extant counterpart when appropriate. Change-Id: Ieb4037874fba2e96fc2354b34a97a3cb8f6490f3 Signed-off-by:
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Vasu Dev authored
Add an include header guard to guard against multiple includes Change-Id: I73efa03efc912d2047edab903c7caed05b444da2 Signed-off-by:
Vasu Dev <vasu.dev@intel.com> Signed-off-by:
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Mitch Williams authored
When disabling and enabling VFs on a live system with the VF driver loaded, it's possible to receive an admin queue message from the VF driver at an inconvenient time, e.g. when the associated data structures aren't present or configured. This causes a rather inconvenient panic. To guard against this, we change the order of when we set num_alloc_vfs when turning off SR-IOV, and then gate processing of any VF messages based upon that value. Likewise, when enabling VFs, we shut off the relevant interrupt until configuration is complete. Change-Id: I0c172c056616c2bebd78bbc807ab446eb484deea Signed-off-by:
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Jesse Brandeburg authored
replace __constant_htons with htons Change-Id: I123a5318bae34c8b004c71db07c56f137c685849 Signed-off-by:
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Anjali Singhai Jain authored
Earlier we were reading Shadow RAM (copy of the NVM) which can differ from the actual NVM. Use AQ instead to read the actual NVM. Change-Id: Ia0f2773b722db77d093f738c068af872be69bbd4 Signed-off-by:
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Jesse Brandeburg authored
Remove custom i40e functions around ethernet addresses that are duplicating already existing kernel functionality. Also ends up fixing a bug with multicast addresses. Signed-off-by:
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Anjali Singhai Jain authored
Debugfs was reading exactly half the number of words, fix it. Change-Id: Ieb217f3c6dca455d44e50a0dc61a6664c0cb2265 Signed-off-by:
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David S. Miller authored
bgmac: add initial support for core rev 4 on ARM BCM47xx ==================== This adds support for core rev 4 and ARM BCM47XX. With an other fix to the platform code I am now getting over 200 MBit/s with this Ethernet driver, the DMA problems are solved are unrelated to bgmac. v3: - moved flags calculation for bcma_core_enable() into if block - remove hard coding of phy address to BGMAC_PHY_NOREGS v2: add changed suggested by Rafał ==================== Signed-off-by:
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