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* net/mlx5: FPGA, Add SBU bypass and reset flowsIlan Tayari2017-06-273-0/+52
| | | | | | | | | | | | | | | | | | | | The Innova FPGA includes shell hardware and Sandbox-Unit (SBU) hardware. The shell hardware is handled by mlx5_core itself, while the SBU is handled by a client driver. Reset the SBU to a well-known initial state when initializing a new device, and set the FPGA to bypass mode when uninitializing a device. This allows the client driver to assume that its device has been reset when a new device is detected. During SBU reset, the FPGA is put into SBU-bypass mode. In this mode packets do not pass through the SBU, so it cannot affect the network data stream at all. A factory-image does not have an SBU, so skip these flows. Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
* net/mlx5: FPGA, Add high-speed connection routinesIlan Tayari2017-06-276-1/+1264
| | | | | | | | | | | | | | | | | | | | | | | | | | An FPGA high-speed connection has two endpoints, an FPGA QP and a ConnectX QP. Add library routines to create and connect the endpoints of an FPGA high-speed connection. These routines allow creating and interacting with both types of connections: Shell and Sandbox Unit (SBU). Shell connection provides an interface to the FPGA's address space, which includes the configuration space and the DDR. Use of the shell connection will be introduced in a later patchset. SBU connection provides a command and/or data interface to the application-specific logic within the FPGA. Use of the SBU connection will be introduced in a later patch in this patchset. Some struct definitions are added to a new header file sdk.h, which will be extended in later patches in the patchset. This header file will contain the in-kernel FPGA client driver API. Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
* net/mlx5: FPGA, Add FW commands for FPGA QPsIlan Tayari2017-06-273-0/+129
| | | | | | | | | | | The FPGA QP is a high-bandwidth communication channel between the host CPU and the FPGA device. It allows performing DMA operations between host memory and the FPGA logic via the ConnectX chip. Add ConnectX FW commands which create and manipulate FPGA QPs. Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
* net/mlx5: FPGA, Move FPGA init/cleanup to init_onceIlan Tayari2017-06-273-17/+16Star
| | | | | | | | | The FPGA init and cleanup routines should be called just once per device. Move them to the init_once and cleanup_once routines. Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
* net/mlx5: Add QP WQ supportIlan Tayari2017-06-272-0/+56
| | | | | | | | | | A QP in ConnectX is a concatenation of RQ and SQ which share a QP-number and work together. Add support for allocating and managing the work-queue buffer for a QP, in a similar way to how SQs and RQs are already supported. Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
* net/mlx5: Make get_cqe routine not ethernet-specificIlan Tayari2017-06-275-22/+21Star
| | | | | | | | | | | | | | Move mlx5e_get_cqe routine to wq.h and rename it to mlx5_cqwq_get_cqe. This allows it to be used by other CQ users outside of the ethernet driver code. A later patch in this patchset will make use of it from FPGA code for the FPGA high-speed connection. Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
* net/mlx5: Add support for multiple RoCE enableIlan Tayari2017-06-271-0/+4
| | | | | | | | | | | | | Previously, only mlx5_ib enabled RoCE on the port, but FPGA needs it as well. Add support for counting number of enables, so that FPGA and IB can work in parallel and independently. Program the HW to enable RoCE on the first enable call, and program to disable RoCE on the last disable call. Signed-off-by: Ilan Tayari <ilant@mellanox.com> Reviewed-by: Boris Pismenny <borisp@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
* net/mlx5: Add reserved-gids supportIlan Tayari2017-06-276-3/+243
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Reserved GIDs are entries in the GID table in use by the mlx5_core and its submodules (e.g. FPGA, SRIOV, E-Swtich, netdev). The entries are reserved at the high indexes of the GID table. A mlx5 submodule may reserve a certain amount of GIDs for its own use during the load sequence by calling mlx5_core_reserve_gids, and must also take care to un-reserve these GIDs when it closes. Reservation is only allowed during the load sequence and before any interfaces (e.g. mlx5_ib or mlx5_en) are up. After reservation, a submodule may call mlx5_core_reserved_gid_alloc/ free to allocate entries from the reserved GIDs pool. Reserve a GID table entry for every supported FPGA QP. A later patch in the patchset will remove them from being reported to IB core. Another such patch will make use of these for FPGA QPs in Innova NIC. Added lib/mlx5.h to serve as a library for mlx5 submodlues, and to expose only public mlx5 API, more mlx5 library files will be added in future submissions. Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
* net/mlx5: Set interface flags before cleanup in unload_oneIlan Tayari2017-06-271-2/+3
| | | | | | | | | | | | | | In load_one, the interface flags are changed from down to up, only after initializing the interfaces. In unload_one, the flags are changed from up to down before the interface cleanup. Change the cleanup order to be opposite to initialization order. This fixes flag consistency between init and cleanup. Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
* net/mlx4: fix spelling mistake: "coalesing" -> "coalescing"Colin Ian King2017-06-271-1/+1
| | | | | | | | Trivial fix to spelling mistake in en_dbg debug message Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: macb: add fixed-link node supportMichael Grzeschik2017-06-252-39/+60
| | | | | | | | | In case the MACB is directly connected to a non-mdio PHY/device, it should be possible to provide a fixed link configuration in the DT. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: qcom/emac: add support for emulation systemsTimur Tabi2017-06-251-2/+21
| | | | | | | | | | | On emulation systems, the EMAC's internal PHY ("SGMII") is not present, but is not needed for network functionality. So just display a warning message and ignore the SGMII. Tested-by: Philip Elcan <pelcan@codeaurora.org> Tested-by: Adam Wallis <awallis@codeaurora.org> Signed-off-by: Timur Tabi <timur@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: qcom/emac: do not reset the EMAC during initializationTimur Tabi2017-06-251-2/+0Star
| | | | | | | | | | | On ACPI systems, the driver depends on firmware pre-initializing the EMAC because we don't have access to the clocks, and the EMAC has specific clock programming requirements. Therefore, we don't want to reset the EMAC while we are completing the initialization. Tested-by: Richard Ruigrok <rruigrok@codeaurora.org> Signed-off-by: Timur Tabi <timur@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: qcom/emac: add shutdown functionTimur Tabi2017-06-251-0/+14
| | | | | | | | | | The shutdown function halts all DMA and interrupts, so that all operations are discontinued when the system shuts down, e.g. via kexec or a forced reboot. Tested-by: Tyler Baicar <tbaicar@codeaurora.org> Signed-off-by: Timur Tabi <timur@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: add VF and PF representors to flower appSimon Horman2017-06-251-2/+83
| | | | | | | | | | | Initialise VF and PF representors in flower app. Based in part on work by Benjamin LaHaise, Bert van Leeuwen and Jakub Kicinski. Signed-off-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: add flower appSimon Horman2017-06-254-0/+300
| | | | | | | | | | | | Add app for flower offload. At this point the PF netdev and phys port representor netdevs are initialised. Follow-up work will add support for VF and PF representors and beyond that offloading the flower classifier. Based in part on work by Benjamin LaHaise and Bert van Leeuwen. Signed-off-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: add support for control messages for flower appSimon Horman2017-06-255-3/+281
| | | | | | | | | | | | In preparation for adding a new flower app - targeted at offloading the flower classifier - provide support for control message that it will use to communicate with the NFP. Based in part on work by Bert van Leeuwen. Signed-off-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: add support for tx/rx with metadata portidSimon Horman2017-06-252-6/+52
| | | | | | | | | | Allow tx/rx with metadata port id. This will be used for tx/rx of representor netdevs acting as upper-devices while a pf netdev acts as a lower-device. Signed-off-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: provide nfp_port to of nfp_net_get_mac_addr()Simon Horman2017-06-253-15/+15
| | | | | | | | | | | Provide port rather than vNIC as parameter of nfp_net_get_mac_addr. This is to allow this function to be used by representor netdevs where a vNIC may have more than one physical port none of which are associated with the vNIC. Signed-off-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: app callbacks for SRIOVSimon Horman2017-06-252-5/+55
| | | | | | | | | | | | | | Add app-callbacks for app-specific initialisation of SRIOV. Disabling SRIOV is brought forward in nfp_pci_remove() so that nfp_app_sriov_disable is called while the app still exists. This is intended to be used to implement representor netdevs for virtual ports. Signed-off-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: add stats and xmit helpers for representorsSimon Horman2017-06-252-1/+226
| | | | | | | | | | | Provide helpers for stats and xmit on representor netdevs. Parts based on work by Bert van Leeuwen, Benjamin LaHaise and Jakub Kicinski. Signed-off-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: general representor implementationSimon Horman2017-06-255-0/+287
| | | | | | | | | | | Provide infrastructure to create and destroy representors of a given type. Parts based on work by Bert van Leeuwen, Benjamin LaHaise, and Jakub Kicinski. Signed-off-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: map mac_stats and vf_cfg BARsSimon Horman2017-06-255-33/+164
| | | | | | | | | | | | | | If present map mac_stats and vf_cfg BARs. These will be used by representor netdevs to read statistics for phys port and vf representors. Also provide defines describing the layout of the mac_stats area. Similar defines are already present for the cf_cfg area. Based in part on work by Jakub Kicinski. Signed-off-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: move physical port init into a helperJakub Kicinski2017-06-253-17/+34
| | | | | | | | | Move MAC/PHY port init into a helper to make it easier to reuse it in the representor code. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfp: devlink add support for getting eswitch modeJakub Kicinski2017-06-252-0/+33
| | | | | | | | | | Add app callback for reporting eswitch mode. Non-SRIOV apps should not implement this callback, nfp_app code will then respond with -EOPNOTSUPP. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: bcmgenet: Remove special handling of "internal" phy-modeFlorian Fainelli2017-06-231-16/+8Star
| | | | | | | | The PHY library now supports an "internal" phy-mode, thus making our custom parsing code now unnecessary. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge tag 'mlx5-updates-2017-06-23' of ↵David S. Miller2017-06-2311-98/+528
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5-updates-2017-06-23 This series provides some updates to the mlx5 core and netdevice drivers. Three patches from Tariq, Introduces page reuse mechanism in non-Striding RQ RX datapath, we allow the the RX descriptor to reuse its allocated page as much as it could, until the page is fully consumed. RX page reuse reduces the stress on page allocator and improves RX performance especially with high speeds (100Gb/s). Next four patches of the series from Or allows to offload tc flower matching on ttl/hoplimit and header re-write of hoplimit. The rest of the series from Yotam and Or enhances mlx5 to support FW flashing through the mlxfw module, in a similar manner done by the mlxsw driver. Currently, only ethtool based flashing is implemented, where both Eth and IB ports are supported. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * net/mlx5e: IPoIB, Support the flash device ethtool callbackOr Gerlitz2017-06-221-0/+9
| | | | | | | | | | | | | | | | | | This callback further invokes the mlxfw module to flash the new firmware file to the device. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * net/mlx5e: Support the flash device ethtool callbackOr Gerlitz2017-06-222-0/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This callback further invokes the mlxfw module to flash the new firmware file to the device. As the firmware flash process takes about 20 seconds and ethtool takes the rtnl lock during the flash_device callback, we release the rtnl lock at the beginning of the flash process and take it again before leaving the callback. This way, rtnl is not held during the process. To make sure the device does not get deleted while being flashed, we take a reference to it before releasing rtnl lock. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * net/mlx5: Add mlxfw callbacksOr Gerlitz2017-06-222-0/+157
| | | | | | | | | | | | | | | | | | | | | | Add mlx5 implementation for the ones defined by the mlxfw shared module to be used while flashing the device firmware. The callbacks do their job through the MCQI, MCC and MCDA registers. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * net/mlx5: Add helper functions to set/query MCC/MCDA/MCQI registersOr Gerlitz2017-06-221-0/+114
| | | | | | | | | | | | | | | | To be used by the mlx5 callbacks exposed to the mlxfw module. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * mlxfw: Make the module selectableOr Gerlitz2017-06-222-1/+16
| | | | | | | | | | | | | | | | | | | | | | There are upcoming NIC (mlx5) use-cases where people want to avoid building the mlxfw module, allow for that. The mlxsw module is untouched and keeps selecting mlxfw. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Acked-by: Yotam Gigi <yotamg@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * net/mlx5e: Add header re-write offloading of IPv6 hop-limitOr Gerlitz2017-06-221-0/+1
| | | | | | | | | | | | | | | | For environments where flow-based ipv6 router is offloaded. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Paul Blakey <paulb@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * net/mlx5e: Use macro for TC header re-write offload field mappingOr Gerlitz2017-06-221-25/+29
| | | | | | | | | | | | | | | | | | | | | | Use a macro for the static mapping between the enumeration of field supported by the firmware for header re-write to the corresponding network header field. This improves the readability of the code and doesn't change any functionality. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Paul Blakey <paulb@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * net/mlx5e: Offload TC matching on ip ttlOr Gerlitz2017-06-221-3/+8
| | | | | | | | | | | | | | | | | | | | | | Enable offloading of TC matching on ip ttl / hop-limit As matching on ttl is supported only by newer HW brands (ConnectX-5), we should do capability check before attempting to offload that. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Paul Blakey <paulb@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * net/mlx5e: Relocate the TC match on ip tos offload code sectionOr Gerlitz2017-06-221-23/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | The code section for offloading matches on ip tos (L3) should come before and not after the one that deals with tcp/udp (L4) matches. Otherwise, we might come up with wrong min-inline requirement, when one attempts to match on both L3 and L4. Fixes: fd7da28b280d ('net/mlx5e: Offload TC matching on ip tos / traffic-class') Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Paul Blakey <paulb@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * net/mlx5e: Introduce RX Page-ReuseTariq Toukan2017-06-224-37/+126
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce a Page-Reuse mechanism in non-Striding RQ RX datapath. A WQE (RX descriptor) buffer is a page, that in most cases was fully wasted on a packet that is much smaller, requiring a new page for the next round. In this patch, we implement a page-reuse mechanism, that resembles a `SW Striding RQ`. We allow the WQE to reuse its allocated page as much as it could, until the page is fully consumed. In each round, the WQE is capable of receiving packet of maximal size (MTU). Yet, upon the reception of a packet, the WQE knows the actual packet size, and consumes the exact amount of memory needed to build a linear SKB. Then, it updates the buffer pointer within the page accordingly, for the next round. Feature is mutually exclusive with XDP (packet-per-page) and LRO (session size is a power of two, needs unused page). Performance tests: iperf tcp tests show huge gain: -------------------------------------------- num streams | BW before | BW after | ratio | 1 | 22.2 | 30.9 | 1.39x | 8 | 64.2 | 93.6 | 1.46x | 64 | 56.7 | 91.4 | 1.61x | -------------------------------------------- Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * net/mlx5e: Enhance RX SKB headroom logicTariq Toukan2017-06-222-8/+7Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In the RX memory scheme of non Striding RQ, we use linear SKBs. Keeping NET_IP_ALIGN in headroom can improve performance on some archs. In addition, take this headroom into account when calculating the LRO WQE size. These are not needed in Striding RQ as they're done implicitly within the non-linear SKB allocation. Fixes: 1bfecfca565c ("net/mlx5e: Build RX SKB on demand") Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
| * net/mlx5e: Build SKB with exact frag_sizeTariq Toukan2017-06-223-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | Build the SKB over the receive packet instead of the whole page. Getting the SKB's linear data and shared_info closer improves locality. In addition, this opens up the possibility to make use of other parts of the page in the downstream page-reuse patch. Fixes: 1bfecfca565c ("net/mlx5e: Build RX SKB on demand") Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
* | cxgb4: Use Firmware params to get buffer-group mapArjun Vynipadath2017-06-233-18/+101
| | | | | | | | | | | | | | | | | | | | | | | | Buffer group mappings can be obtained using FW_PARAMs cmd for newer FW. Since some of the bg_maps are obtained in atomic context, created another t4_query_params_ns(), that wont sleep when awaiting mbox cmd completion. Signed-off-by: Casey Leedom <leedom@chelsio.com> Signed-off-by: Arjun Vynipadath <arjun@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | cxgb4: Update T6 Buffer Group and Channel MappingsArjun Vynipadath2017-06-233-18/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were using t4_get_mps_bg_map() for both t4_get_port_stats() to determine which MPS Buffer Groups to report statistics on for a given Port, and also for t4_sge_alloc_rxq() to provide a TP Ingress Channel Congestion Map. For T4/T5 these are actually the same values (because they are ~somewhat~ related), but for T6 they should return different values (T6 has Port 0 associated with MPS Buffer Group 0 (with MPS Buffer Group 1 silently cascading off) and Port 1 is associated with MPS Buffer Group 2 (with 3 cascading off)). Based on the original work by Casey Leedom <leedom@chelsio.com> Signed-off-by: Arjun Vynipadath <arjun@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ena: update ena driver to version 1.2.0Netanel Belgazal2017-06-231-3/+3
| | | | | | | | | | Signed-off-by: Netanel Belgazal <netanel@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ena: update driver's rx drop statisticsNetanel Belgazal2017-06-231-0/+9
| | | | | | | | | | | | | | | | | | rx drop counter is reported by the device in the keep-alive event. update the driver's counter with the device counter. Signed-off-by: Netanel Belgazal <netanel@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ena: use lower_32_bits()/upper_32_bits() to split dma addressNetanel Belgazal2017-06-231-2/+2
| | | | | | | | | | | | | | | | In ena_com_mem_addr_set(), use the above functions to split dma address to the lower 32 bits and the higher 16 bits. Signed-off-by: Netanel Belgazal <netanel@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ena: separate skb allocation to dedicated functionNetanel Belgazal2017-06-231-17/+27
| | | | | | | | | | Signed-off-by: Netanel Belgazal <netanel@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ena: use napi_schedule_irqoff when possibleNetanel Belgazal2017-06-231-1/+1
| | | | | | | | | | Signed-off-by: Netanel Belgazal <netanel@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ena: allow the driver to work with small number of msix vectorsNetanel Belgazal2017-06-232-20/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Current driver tries to allocate msix vectors as the number of the negotiated io queues. (with another msix vector for management). If pci_alloc_irq_vectors() fails, the driver aborts the probe and the ENA network device is never brought up. With this patch, the driver's logic will reduce the number of IO queues to the number of allocated msix vectors (minus one for management) instead of failing probe(). Signed-off-by: Netanel Belgazal <netanel@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ena: add support for out of order rx buffers refillNetanel Belgazal2017-06-234-17/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ENA driver post Rx buffers through the Rx submission queue for the ENA device to fill them with receive packets. Each Rx buffer is marked with req_id in the Rx descriptor. Newer ENA devices could consume the posted Rx buffer in out of order, and as result the corresponding Rx completion queue will have Rx completion descriptors with non contiguous req_id(s) In this change the driver holds two rings. The first ring (called free_rx_ids) is a mapping ring. It holds all the unused request ids. The values in this ring are from 0 to ring_size -1. When the driver wants to allocate a new Rx buffer it uses the head of free_rx_ids and uses it's value as the index for rx_buffer_info ring. The req_id is also written to the Rx descriptor Upon Rx completion, The driver took the req_id from the completion descriptor and uses it as index in rx_buffer_info. The req_id is then return to the free_rx_ids ring. This patch also adds statistics to inform when the driver receive out of range or unused req_id. Note: free_rx_ids is only accessible from the napi handler, so no locking is required Signed-off-by: Netanel Belgazal <netanel@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ena: add reset reason for each device FLRNetanel Belgazal2017-06-235-6/+54
| | | | | | | | | | | | | | | | For each device reset, log to the device what is the cause the reset occur. Signed-off-by: Netanel Belgazal <netanel@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: ena: change sizeof() argument to be the type pointerNetanel Belgazal2017-06-231-8/+8
| | | | | | | | | | | | | | | | | | | | Instead of using: memset(ptr, 0x0, sizeof(struct ...)) use: memset(ptr, 0x0, sizeor(*ptr)) Signed-off-by: Netanel Belgazal <netanel@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-07 20:49:54 +0200