- 03 Dec, 2015 40 commits
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David S. Miller authored
Stefan Hajnoczi says: ==================== Add virtio transport for AF_VSOCK v2: * Rebased onto Linux v4.4-rc2 * vhost: Refuse to assign reserved CIDs * vhost: Refuse guest CID if already in use * vhost: Only accept correctly addressed packets (no spoofing!) * vhost: Support flexible rx/tx descriptor layout * vhost: Add missing total_tx_buf decrement * virtio_transport: Fix total_tx_buf accounting * virtio_transport: Add virtio_transport global mutex to prevent races * common: Notify other side of SOCK_STREAM disconnect (fixes shutdown semantics) * common: Avoid recursive mutex_lock(tx_lock) for write_space (fixes deadlock) * common: Define VIRTIO_VSOCK_TYPE_STREAM/DGRAM hardware interface constants * common: Define VIRTIO_VSOCK_SHUTDOWN_RCV/SEND hardware interface constants * common: Fix peer_buf_alloc inheritance on child socket This patch series adds a virtio transport for AF_VSOCK (net/vmw_vsock/). AF_VSOCK is designed for communication between virtual machines and hypervisors. It is currently only implemented for VMware's VMCI transport. This series implements the proposed virtio-vsock device specification from here: http://comments.gmane.org/gmane.comp.emulators.virtio.devel/855 Most of the work was done by Asias He and Gerd Hoffmann a while back. I have picked up the series again. The QEMU userspace changes are here: https://github.com/stefanha/qemu/commits/vsock Why virtio-vsock? ----------------- Guest<->host communication is currently done over the virtio-serial device. This makes it hard to port sockets API-based applications and is limited to static ports. virtio-vsock uses the sockets API so that applications can rely on familiar SOCK_STREAM and SOCK_DGRAM semantics. Applications on the host can easily connect to guest agents because the sockets API allows multiple connections to a listen socket (unlike virtio-serial). This simplifies the guest<->host communication and eliminates the need for extra processes on the host to arbitrate virtio-serial ports. Overview -------- This series adds 3 pieces: 1. virtio_transport_common.ko - core virtio vsock code that uses vsock.ko 2. virtio_transport.ko - guest driver 3. drivers/vhost/vsock.ko - host driver Howto ----- The following kernel options are needed: CONFIG_VSOCKETS=y CONFIG_VIRTIO_VSOCKETS=y CONFIG_VIRTIO_VSOCKETS_COMMON=y CONFIG_VHOST_VSOCK=m Launch QEMU as follows: # qemu ... -device vhost-vsock-pci,id=vhost-vsock-pci0,guest-cid=3 Guest and host can communicate via AF_VSOCK sockets. The host's CID (address) is 2 and the guest is automatically assigned a CID (use VMADDR_CID_ANY (-1) to bind to it). Status ------ There are a few design changes I'd like to make to the virtio-vsock device: 1. The 3-way handshake isn't necessary over a reliable transport (virtqueue). Spoofing packets is also impossible so the security aspects of the 3-way handshake (including syn cookie) add nothing. The next version will have a single operation to establish a connection. 2. Credit-based flow control doesn't work for SOCK_DGRAM since multiple clients can transmit to the same listen socket. There is no way for the clients to coordinate buffer space with each other fairly. The next version will drop credit-based flow control for SOCK_DGRAM and only rely on best-effort delivery. SOCK_STREAM still has guaranteed delivery. 3. In the next version only the host will be able to establish connections (i.e. to connect to a guest agent). This is for security reasons since there is currently no ability to provide host services only to certain guests. This also matches how AF_VSOCK works on modern VMware hypervisors. ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Asias He authored
Enable virtio-vsock and vhost-vsock. Signed-off-by:
Asias He <asias@redhat.com> Signed-off-by:
Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by:
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Asias He authored
VM sockets vhost transport implementation. This module runs in host kernel. Signed-off-by:
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Asias He authored
VM sockets virtio transport implementation. This module runs in guest kernel. Signed-off-by:
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Asias He authored
This module contains the common code and header files for the following virtio-vsock and virtio-vhost kernel modules. Signed-off-by:
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Asias He authored
Signed-off-by:
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Roopa Prabhu authored
Adds support for RTNH_F_DEAD and RTNH_F_LINKDOWN flags on mpls routes due to link events. Also adds code to ignore dead routes during route selection. Unlike ip routes, mpls routes are not deleted when the route goes dead. This is current mpls behaviour and this patch does not change that. With this patch however, routes will be marked dead. dead routes are not notified to userspace (this is consistent with ipv4 routes). dead routes: ----------- $ip -f mpls route show 100 nexthop as to 200 via inet 10.1.1.2 dev swp1 nexthop as to 700 via inet 10.1.1.6 dev swp2 $ip link set dev swp1 down $ip link show dev swp1 4: swp1: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000 link/ether 00:02:00:00:00:01 brd ff:ff:ff:ff:ff:ff $ip -f mpls route show 100 nexthop as to 200 via inet 10.1.1.2 dev swp1 dead linkdown nexthop as to 700 via inet 10.1.1.6 dev swp2 linkdown routes: ---------------- $ip -f mpls route show 100 nexthop as to 200 via inet 10.1.1.2 dev swp1 nexthop as to 700 via inet 10.1.1.6 dev swp2 $ip link show dev swp1 4: swp1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000 link/ether 00:02:00:00:00:01 brd ff:ff:ff:ff:ff:ff /* carrier goes down */ $ip link show dev swp1 4: swp1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000 link/ether 00:02:00:00:00:01 brd ff:ff:ff:ff:ff:ff $ip -f mpls route show 100 nexthop as to 200 via inet 10.1.1.2 dev swp1 linkdown nexthop as to 700 via inet 10.1.1.6 dev swp2 Signed-off-by:Roopa Prabhu <roopa@cumulusnetworks.com> Acked-by:
Robert Shearman <rshearma@brocade.com> Signed-off-by:
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David S. Miller authored
Simon Horman says: ==================== ravb: More compatibility strings this short series adds generic gen2 and gen3, and soc-specific compatibility strings for the missing gen2 SoCs. Key Changes in v2: * Include "rcar-" in generic bindings ==================== Signed-off-by: -
Simon Horman authored
Simply document new compatibility strings. As a previous patch adds a generic R-Car Gen2 compatibility string there appears to be no need for a driver updates. Signed-off-by:
Simon Horman <horms+renesas@verge.net.au> Acked-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Simon Horman authored
Add fallback compatibility strings for R-Car Gen 2 & 3 SoC Families. This is in keeping with the fallback scheme being adopted wherever appropriate for drivers for Renesas SoCs. Signed-off-by:
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Phil Sutter authored
Setting a value bigger than 255 resulted in using only the lower eight bits of that value as it is assigned to the u8 header field. To avoid this unexpected result, reject such values. Setting a value of zero is technically possible, but hosts receiving such a packet have to treat it like hop_limit was set to one, according to RFC2460. Therefore I don't see a use-case for that. Setting a route's hop_limit to zero in iproute2 means to use the sysctl default, which is not the case here: Setting e.g. net.conf.eth0.hop_limit=0 will not make the kernel use net.conf.all.hop_limit for outgoing packets on eth0. To avoid these kinds of confusion, reject zero. Signed-off-by:
Phil Sutter <phil@nwl.cc> Signed-off-by:
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Kazuya Mizuguchi authored
This patch makes PTP support active in CONFIG mode on R-Car Gen3. Signed-off-by:
Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> Signed-off-by:
Yoshihiro Kaneko <ykaneko0929@gmail.com> Signed-off-by:
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David S. Miller authored
Jakub Kicinski says: ==================== Netronome NFP4000/NFP6000 NIC VF driver This patchset adds support for VFs of Netronome's NFP-4000 and NFP-6000 based NICs. We are currently also preparing the submission for the PF driver, but it is not quite ready yet. The PF driver can be found on GitHub: https://github.com/Netronome/nfp-drv-kmods ==================== Signed-off-by:
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Jakub Kicinski authored
Add driver for Virtual Functions for the Netronome's NFP-4000 and NFP-6000 based NICs. Signed-off-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by:
Rolf Neugebauer <rolf.neugebauer@netronome.com> Signed-off-by:
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Jakub Kicinski authored
Add PCI vendor id for Netronome Systems. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queueDavid S. Miller authored
Jeff Kirsher says: ==================== 40GbE Intel Wired LAN Driver Updates 2015-12-03 This series contains updates to i40e and i40evf only. Mitch updates the i40evf driver by increasing the maximum number of queues, since future devices will allow for more queue pairs. Cleans up a duplicate printing of the driver info string done in init, since it is already done in probe. Cleaned up the several allocations which did not need to be at atomic level, where GFP_KERNEL would work just fine. Then makes i40e_sync_vsi_filters() a more mature function, make having a common exit point so it will properly release the busy lock on the VSI and propagate errors to the callers. Then does some whitespace housekeeping in i40evf. Kiran moves and updates the detection/recovery of transmit queue hang code to service_task from tx_timeout function. Also fixed memory leak when users program flow-director filter using ethtool (sideband filter programming), the cause being the check of 'tx_buffer->skb' was preventing 'raw_buf' from being freed as part of the cleanup. Jesse enabled the ability to turn off/on packet split using ethtool priv flags. Then does some housekeeping for both the i40e and i40evf drivers which includes: remove unused/useless code, correct whitespace, remove duplicate #include, fix incorrect comment, etc... Neerav cleans up functions to gather Flow Control Rx XOFF stats, since the recent change in the driver logic for checking transmit hang has been moved, so these functions do not do anything meaningful any longer. ==================== Signed-off-by: -
David S. Miller authored
Or Gerlitz says: ==================== Introducing ConnectX-4 Ethernet SRIOV This patchset introduces the support of Ethernet SRIOV in ConnectX-4 family of 100G Ethernet NICs. Some features are still missing, but all the basic SRIOV functionalities are there already. Basic Introduction: ConnectX-4 HW architecture provides two kinds of underlying HW switches. MPFS (Multi Physical Function Switch) or L2 Table in Software terms: The HCA has one MPFS switch per physical port, this switch is responsible of forwarding Unicast traffic to the various overlying Physical Functions (PFs). Multicast traffic is flooded amongst all the PFs, Each PF can request to forward a unicast MAC to its E-Switch Uplink vport (which we will cover later) through SET_L2_TABLE_ENTRY HW command. MPFS has five ports, four are connected to PFs (one for each) and one is connected directly to the Physical Port (Physical Link). E-Switch (Ethernet Switch): The HCA has one per physical function. The main responsibility of this component is to forward Unicast/Multicast and vlan tagged/untagged traffic to the various Virtual Functions (VFs) allocated by the PF. Unlike MPFS, the PF needs to explicitly create the E-Switch FDB table, Which is a HW flow table managed by the PF driver whenever vport_group_manager capability bit is set for this PF. E-Switch has Virtual Ports (vports) entities as its ports, vport0 and uplink vport are special kind of vports that represents PF vport (vport0) and uplink vport which is connected to the MPFS switch (if exists) as the PF external link. vport1..vportN represent VF0..VF(N-1) egress/ingress ports. E-Switch FDB contains forwarding rules such as: UC MAC0 -> vport0(PF). UC MAC1 -> vport1. UC MAC2 -> vport2. MC MACX -> vport0, vport2, Uplink. MC MACY -> vport1, Uplink. For unmatched traffic FDB has the following default rules: Unmatched Traffic (src vport != Uplink) -> Uplink. Unmatched Traffic (src vport == Uplink) -> vport0(PF). NIC VPort context: Each NIC (VF/PF) has its own vport context which will be used to store the current NIC vport context (UC/MC and vlan lists) and other NIC properties such as MTU, promisc mode, etc.. NIC (VF/PF) driver is responsible of constantly updating this context. FDB rules population: Each NIC vport (VF/PF) will notify E-Switch manager of its UC/MC vport context changes via modify vport context command, which will be translated to an event that will be handled by E-Switch manager (PF) which will update FDB table accordingly. Both PF and VF use the same driver and submit commands directly to the firmware. The PF sees the vport_group_manager capability bit and as such runs the code to populate the embedded switches as explained above. The patch goes as follows: Patches 1-2 introduces the basic PCI SRIOV functionalities and the support of Connectx4 to enable specific VFs via enable/disable HCA commands. These two patches will be also in use later for the IB SRIOV flow. Patches 3-8 Introduces the basic E-Switch capabilities and commands to be used later by VF to modify and update its NIC vport context, and by PF (E-Switch Manager) driver to Query the VF NIC context and acts accordingly. Patches 9-10 Provide the needed functionality of a NIC driver VF/PF to support SRIOV, mainly vport context update support. Patch 11 ("net/mlx5: Introducing E-Switch and l2 table"), Introduces the basic E-Switch support and infrastructure to read vport context events and to update MPFS L2 Table of the UC mac addresses request by the PF. Patches 12-18 Introduces SRIOV enablemenet and E-Switch FDB table management It adds the Basic E-Swtich public API to set and get sriov properties to be used in PF netdev sriov ndos. Patchset was applied ontop of commit 3f8c0f7e "gianfar: use of_property_read_bool()" Saeed, Eli and Or. changes from V0, addressed feedback from Alex Duyck: - patch 09, remove the loop to seek the device address - patch 09, avoid using array as returned value from helper function - patch 10, fix possible buffer over-run changes from V1, addressed feedback from and Julia Lawall and kbuild test robot - patch 11 check the right variable for allocation failure - patch 18 eliminated unneeded semicolon ==================== Signed-off-by: -
Saeed Mahameed authored
Implement and enable SR-IOV ndos to manage SR-IOV configuration via netdev netlink API. Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
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Saeed Mahameed authored
Add support to get VF statistics using query vport counter command. Signed-off-by:
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Saeed Mahameed authored
Add query and modify functions to control client vlan and qos striping or insertion, in E-Switch vports contexts. Signed-off-by:
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Saeed Mahameed authored
E-Switch vport context is unlike NIC vport context, managed by the E-Switch manager or vport_group_manager and not by the NIC(VF) driver. The E-Switch manager can access (read/modify) any of its vports E-Switch context. Currently E-Switch vport context includes only clietnt and server vlan insertion and striping data (for later support of VST mode). Signed-off-by:
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Saeed Mahameed authored
Implement set VF mac/link state and query VF config to be used later in nedev VF ndos or any other management API. Signed-off-by:
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Saeed Mahameed authored
Enabling E-Switch SRIOV for nvfs+1 vports. Create E-Switch FDB for L2 UC/MC mac steering between VFs/PF and external vport (Uplink). FDB contains forwarding rules such as: UC MAC0 -> vport0(PF). UC MAC1 -> vport1. UC MAC2 -> vport2. MC MACX -> vport0, vport2, Uplink. MC MACY -> vport1, Uplink. For unmatched traffic FDB has the following default rules: Unmached Traffic (src vport != Uplink) -> Uplink. Unmached Traffic (src vport == Uplink) -> vport0(PF). FDB rules population: Each NIC vport (VF) will notify E-Switch manager of its UC/MC vport context changes via modify vport context command, which will be translated to an event that will be handled by E-Switch manager (PF) which will update FDB table accordingly. Signed-off-by:
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Saeed Mahameed authored
Define needed hardware structures and capabilities needed for E-Switch FDB flow tables and read them on driver load. Signed-off-by:
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Saeed Mahameed authored
E-Switch is the software entity that represents and manages ConnectX4 inter-HCA ethernet l2 switching. E-Switch has its own Virtual Ports, each Vport/vNIC/VF can be connected to the device through a vport of an e-switch. Each e-switch is managed by one vNIC identified by HCA_CAP.vport_group_manager (usually it is the PF/vport[0]), and its main responsibility is to forward each packet to the right vport. e-Switch needs to manage its own l2-table and FDB tables. L2 table is a flow table that is managed by FW, it is needed for Multi-host (Multi PF) configuration for inter HCA switching between PFs. FDB table is a flow table that is totally managed by e-Switch driver, its main responsibility is to switch packets between e-Swtich internal vports and uplink vport that belong to the same. This patch introduces only e-Swtich l2 table management, FDB managemnt will come later when ethernet SRIOV/VFs will be enabled. preperation for ethernet sriov and l2 table management. Signed-off-by:
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Saeed Mahameed authored
Each Vport/vNIC must notify underlying e-Switch layer for vlan table changes in-order to update SR-IOV FDB tables. We do that at vlan_rx_add_vid and vlan_rx_kill_vid ndos. Signed-off-by:
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Saeed Mahameed authored
Each Vport/vNIC must notify underlying e-Switch layer for UC/MC list and promisc mode updates, in-order to update l2 tables and SR-IOV FDB tables. We do that at set_rx_mode ndo. preperation for ethernet-SRIOV and l2 table management. Signed-off-by:
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Saeed Mahameed authored
Those functions are needed to notify the upcoming L2 table and SR-IOV E-Switch(FDB) manager(PF), of the NIC vport (vf) vlan table changes. preperation for ethernet sriov and l2 table management. Signed-off-by:
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Saeed Mahameed authored
Those functions are needed to notify the upcoming SR-IOV E-Switch(FDB) manager(PF), of the NIC vport (vf) promisc mode changes. Preperation for ethernet sriov and l2 table management. Signed-off-by:
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Saeed Mahameed authored
In preparation for SR-IOV we add here an API to enable each e-switch manager (PF) to configure its VFs link states in e-switch preparation for ethernet sriov. Signed-off-by:
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Saeed Mahameed authored
Those functions are needed to notify the upcoming L2 table and SR-IOV E-Switch(FDB) manager(PF), of the NIC vport (vf) UC/MC mac lists changes. preperation for ethernet sriov and l2 table management. Signed-off-by:
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Saeed Mahameed authored
In preparation for SR-IOV we add here an API to enable each e-switch client (PF/VF) to configure its L2 MAC addresses and for the e-switch manager (usually the PF) to access them in order to be able to configure them into the e-switch. Therefore we now pass vport num parameter to mlx5_query_nic_vport_context, so PF can access other vports contexts. preperation for ethernet sriov and l2 table management. Signed-off-by:
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Saeed Mahameed authored
Update HCA capabilities and HW struct to include needed capabilities for upcoming Ethernet Switch (SR-IOV E-Switch). Signed-off-by:
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Eli Cohen authored
This patch adds SRIOV base support for mlx5 supported devices. The same driver is used for both PFs and VFs; VFs are identified by the driver through the flag MLX5_PCI_DEV_IS_VF added to the pci table entries. Virtual functions are created as usual through writing a value to the sriov_numvs sysfs file of the PF device. Upon instantiating VFs, they will all be probed by the driver on the hypervisor. One can gracefully unbind them through /sys/bus/pci/drivers/mlx5_core/unbind. mlx5_wait_for_vf_pages() was added to ensure that when a VF dies without executing proper teardown, the hypervisor driver waits till all of the pages that were allocated at the hypervisor to maintain its operation are returned. In order for the VF to be operational, the PF needs to call enable_hca for it. This can be done before the VFs are created through a call to pci_enable_sriov. If the there are VFs assigned to a VMs when the driver of the PF is unloaded, all the VF will experience system error and PF driver unloads cleanly; in this case pci_disable_sriov is not called and the devices will show when running lspci. Once the PF driver is reloaded, it will sync its data structures which maintain state on its VFs. Signed-off-by:
Eli Cohen <eli@mellanox.com> Signed-off-by:
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Eli Cohen authored
Modify these functions to have func_id argument to state which device we are referring to. This is done as a preparation for SRIOV support where a PF driver needs to control its virtual functions. Signed-off-by:
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Jarod Wilson authored
Reasonably sure this doesn't serve any purpose. CC: Jay Cliburn <jcliburn@gmail.com> CC: Chris Snook <chris.snook@gmail.com> CC: netdev@vger.kernel.org Signed-off-by:
Jarod Wilson <jarod@redhat.com> Signed-off-by:
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David S. Miller authored
Jiri Pirko says: ==================== bonding/team offload + mlxsw implementation This patchset introduces needed infrastructure for link aggregation offload - for both team and bonding. It also implements the offload in mlxsw driver. Particulary, this patchset introduces possibility for upper driver (bond/team/bridge/..) to pass type-specific info down to notifier listeners. Info is passed along with NETDEV_CHANGEUPPER/NETDEV_PRECHANGEUPPER notifiers. Listeners (drivers of netdevs being enslaved) can react accordingly. Other extension is for run-time use. This patchset introduces new netdev notifier type - NETDEV_CHANGELOWERSTATE. Along with this notification, the upper driver (bond/team/bridge/..) can pass some information about lower device change, particulary link-up and TX-enabled states. Listeners (drivers of netdevs being enslaved) can react accordingly. The last part of the patchset is implementation of LAG offload in mlxsw, using both previously introduced infrastructre extensions. Note that bond-speficic (and ugly) NETDEV_BONDING_INFO used by mlx4 can be removed and mlx4 can use the extensions this patchset adds. I plan to convert it and get rid of NETDEV_BONDING_INFO in a follow-up patchset. v2->v3: - one small fix in patch 1 v1->v2: - added patch 1 and 2 per Andy's request - couple of more or less cosmetic changes described in couple other patches ==================== Signed-off-by: -
Jiri Pirko authored
Enabling/disabling TX on a LAG port means enabling/disabling distribution in our HW. Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Jiri Pirko authored
Implement FDB offloading for lagged ports, including learning LAG FDB entries, adding/removing static FDB entries and dumping existing LAG FDB entries. Signed-off-by:
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Jiri Pirko authored
Implement basic procedures for joining/leaving port to/from LAG. That includes HW setup of collector, core LAG mapping setup. Signed-off-by:
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