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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski2023-10-051-2/+3
|\ | | | | | | | | | | | | | | Cross-merge networking fixes after downstream PR. No conflicts (or adjacent changes of note). Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| * net: mana: Fix oversized sge0 for GSO packetsHaiyang Zhang2023-10-051-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Handle the case when GSO SKB linear length is too large. MANA NIC requires GSO packets to put only the header part to SGE0, otherwise the TX queue may stop at the HW level. So, use 2 SGEs for the skb linear part which contains more than the packet header. Fixes: ca9c54d2d6a5 ("net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)") Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
* | net: mana: Annotate struct hwc_dma_buf with __counted_byKees Cook2023-10-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct hwc_dma_buf. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Long Li <longli@microsoft.com> Cc: Ajay Sharma <sharmaajay@microsoft.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Wei Liu <wei.liu@kernel.org> Cc: Dexuan Cui <decui@microsoft.com> Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20230922172858.3822653-9-keescook@chromium.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* | net: mana: Annotate struct mana_rxq with __counted_byKees Cook2023-10-021-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct mana_rxq. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Wei Liu <wei.liu@kernel.org> Cc: Dexuan Cui <decui@microsoft.com> Cc: Long Li <longli@microsoft.com> Cc: Ajay Sharma <sharmaajay@microsoft.com> Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20230922172858.3822653-7-keescook@chromium.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* net: mana: Add gdma stats to ethtool output for manaShradha Gupta2023-08-111-0/+87
| | | | | | | | | | | | | | | | Extended performance counter stats in 'ethtool -S <interface>' for MANA VF to include GDMA tx LSO packets and bytes count. Tested-on: Ubuntu22 Testcases: 1. LISA testcase: PERF-NETWORK-TCP-THROUGHPUT-MULTICONNECTION-NTTTCP-Synthetic 2. LISA testcase: PERF-NETWORK-TCP-THROUGHPUT-MULTICONNECTION-NTTTCP-SRIOV 3. Validated the GDMA stat packets and byte counters Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: mana: Add page pool for RX buffersHaiyang Zhang2023-08-061-0/+3
| | | | | | | | | | | | | | | Add page pool for RX buffers for faster buffer cycle and reduce CPU usage. The standard page pool API is used. With iperf and 128 threads test, this patch improved the throughput by 12-15%, and decreased the IRQ associated CPU's usage from 99-100% to 10-50%. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: mana: Configure hwc timeout from hardwareSouradeep Chakrabarti2023-08-042-1/+24
| | | | | | | | | | | At present hwc timeout value is a fixed value. This patch sets the hwc timeout from the hardware. It now uses a new hardware capability GDMA_DRV_CAP_FLAG_1_HWC_TIMEOUT_RECONFIG to query and set the value in hwc_timeout. Signed-off-by: Souradeep Chakrabarti <schakrabarti@linux.microsoft.com> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* eth: add missing xdp.h includes in driversJakub Kicinski2023-08-031-0/+2
| | | | | | | | | | | | | Handful of drivers currently expect to get xdp.h by virtue of including netdevice.h. This will soon no longer be the case so add explicit includes. Reviewed-by: Wei Fang <wei.fang@nxp.com> Reviewed-by: Gerhard Engleder <gerhard@engleder-embedded.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Jesper Dangaard Brouer <hawk@kernel.org> Link: https://lore.kernel.org/r/20230803010230.1755386-2-kuba@kernel.org Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
* Merge tag 'v6.4' into rdma.git for-nextJason Gunthorpe2023-06-271-2/+0
|\ | | | | | | | | | | | | | | | | | | | | Linux 6.4 Resolve conflicts between rdma rc and next in rxe_cq matching linux-next: drivers/infiniband/sw/rxe/rxe_cq.c: https://lore.kernel.org/r/20230622115246.365d30ad@canb.auug.org.au Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
| * net: mana: Fix perf regression: remove rx_cqes, tx_cqes countersHaiyang Zhang2023-05-301-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The apc->eth_stats.rx_cqes is one per NIC (vport), and it's on the frequent and parallel code path of all queues. So, r/w into this single shared variable by many threads on different CPUs creates a lot caching and memory overhead, hence perf regression. And, it's not accurate due to the high volume concurrent r/w. For example, a workload is iperf with 128 threads, and with RPS enabled. We saw perf regression of 25% with the previous patch adding the counters. And this patch eliminates the regression. Since the error path of mana_poll_rx_cq() already has warnings, so keeping the counter and convert it to a per-queue variable is not necessary. So, just remove this counter from this high frequency code path. Also, remove the tx_cqes counter for the same reason. We have warnings & other counters for errors on that path, and don't need to count every normal cqe processing. Cc: stable@vger.kernel.org Fixes: bd7fc6e1957c ("net: mana: Add new MANA VF performance counters for easier troubleshooting") Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Link: https://lore.kernel.org/r/1685115537-31675-1-git-send-email-haiyangz@microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
* | RDMA/mana_ib: Use v2 version of cfg_rx_steer_req to enable RX coalescingLong Li2023-06-011-1/+3
|/ | | | | | | | | | | | | With RX coalescing, one CQE entry can be used to indicate multiple packets on the receive queue. This saves processing time and PCI bandwidth over the CQ. The MANA Ethernet driver also uses the v2 version of the protocol. It doesn't use RX coalescing and its behavior is not changed. Link: https://lore.kernel.org/r/1684045095-31228-1-git-send-email-longli@linuxonhyperv.com Signed-off-by: Long Li <longli@microsoft.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
* net: mana: Add support for jumbo frameHaiyang Zhang2023-04-142-0/+18
| | | | | | | | | | | | | | | During probe, get the hardware-allowed max MTU by querying the device configuration. Users can select MTU up to the device limit. When XDP is in use, limit MTU settings so the buffer size is within one page. And, when MTU is set to a too large value, XDP is not allowed to run. Also, to prevent changing MTU fails, and leaves the NIC in a bad state, pre-allocate all buffers before starting the change. So in low memory condition, it will return error, without affecting the NIC. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: mana: Enable RX path to handle various MTU sizesHaiyang Zhang2023-04-141-0/+7
| | | | | | | | | Update RX data path to allocate and use RX queue DMA buffers with proper size based on potentially various MTU sizes. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: mana: Refactor RX buffer allocation code to prepare for various MTUHaiyang Zhang2023-04-141-5/+1
| | | | | | | | | | | Move out common buffer allocation code from mana_process_rx_cqe() and mana_alloc_rx_wqe() to helper functions. Refactor related variables so they can be changed in one place, and buffer sizes are in sync. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: mana: Add new MANA VF performance counters for easier troubleshootingShradha Gupta2023-03-171-0/+18
| | | | | | | | | Extended performance counter stats in 'ethtool -S <interface>' output for MANA VF to facilitate troubleshooting. Tested-on: Ubuntu22 Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: mana: Fix IRQ name - add PCI and queue numberHaiyang Zhang2023-01-211-0/+3
| | | | | | | | | | | | | | The PCI and queue number info is missing in IRQ names. Add PCI and queue number to IRQ names, to allow CPU affinity tuning scripts to work. Cc: stable@vger.kernel.org Fixes: ca9c54d2d6a5 ("net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)") Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Link: https://lore.kernel.org/r/1674161950-19708-1-git-send-email-haiyangz@microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds2022-12-142-17/+17
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull rdma updates from Jason Gunthorpe: "Usual size of updates, a new driver, and most of the bulk focusing on rxe: - Usual typos, style, and language updates - Driver updates for mlx5, irdma, siw, rts, srp, hfi1, hns, erdma, mlx4, srp - Lots of RXE updates: * Improve reply error handling for bad MR operations * Code tidying * Debug printing uses common loggers * Remove half implemented RD related stuff * Support IBA's recently defined Atomic Write and Flush operations - erdma support for atomic operations - New driver 'mana' for Ethernet HW available in Azure VMs. This driver only supports DPDK" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (122 commits) IB/IPoIB: Fix queue count inconsistency for PKEY child interfaces RDMA: Add missed netdev_put() for the netdevice_tracker RDMA/rxe: Enable RDMA FLUSH capability for rxe device RDMA/cm: Make QP FLUSHABLE for supported device RDMA/rxe: Implement flush completion RDMA/rxe: Implement flush execution in responder side RDMA/rxe: Implement RC RDMA FLUSH service in requester side RDMA/rxe: Extend rxe packet format to support flush RDMA/rxe: Allow registering persistent flag for pmem MR only RDMA/rxe: Extend rxe user ABI to support flush RDMA: Extend RDMA kernel verbs ABI to support flush RDMA: Extend RDMA user ABI to support flush RDMA/rxe: Fix incorrect responder length checking RDMA/rxe: Fix oops with zero length reads RDMA/mlx5: Remove not-used IB_FLOW_SPEC_IB define RDMA/hns: Fix XRC caps on HIP08 RDMA/hns: Fix error code of CMD RDMA/hns: Fix page size cap from firmware RDMA/hns: Fix PBL page MTR find RDMA/hns: Fix AH attr queried by query_qp ...
| * RDMA/mana: Remove redefinition of basic u64 typeLeon Romanovsky2022-11-141-17/+14
| | | | | | | | | | | | | | | | | | gdma_obj_handle_t is no more than redefinition of basic u64 type. Remove such obfuscation. Link: https://lore.kernel.org/r/3c1e821279e6a165d058655d2343722d6650e776.1668160486.git.leonro@nvidia.com Acked-by: Long Li <longli@microsoft.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
| * RDMA/mana_ib: Add a driver for Microsoft Azure Network AdapterLong Li2022-11-111-0/+3
| | | | | | | | | | | | | | | | | | | | | | Add a RDMA VF driver for Microsoft Azure Network Adapter (MANA). Co-developed-by: Ajay Sharma <sharmaajay@microsoft.com> Signed-off-by: Ajay Sharma <sharmaajay@microsoft.com> Reviewed-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Long Li <longli@microsoft.com> Link: https://lore.kernel.org/r/1667502990-2559-13-git-send-email-longli@linuxonhyperv.com Signed-off-by: Leon Romanovsky <leon@kernel.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski2022-12-091-1/+8
| | | | | | | | | | | | No conflicts. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* | Merge branch 'mana-shared-6.2' of ↵Jakub Kicinski2022-11-102-1/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma Long Li says: ==================== Introduce Microsoft Azure Network Adapter (MANA) RDMA driver [netdev prep] The first 11 patches which modify the MANA Ethernet driver to support RDMA driver. * 'mana-shared-6.2' of https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: net: mana: Define data structures for protection domain and memory registration net: mana: Define data structures for allocating doorbell page from GDMA net: mana: Define and process GDMA response code GDMA_STATUS_MORE_ENTRIES net: mana: Define max values for SGL entries net: mana: Move header files to a common location net: mana: Record port number in netdev net: mana: Export Work Queue functions for use by RDMA driver net: mana: Set the DMA device max segment size net: mana: Handle vport sharing between devices net: mana: Record the physical address for doorbell page region net: mana: Add support for auxiliary device ==================== Link: https://lore.kernel.org/all/1667502990-2559-1-git-send-email-longli@linuxonhyperv.com/ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* net: mana: Define data structures for protection domain and memory registrationAjay Sharma2022-11-101-5/+116
| | | | | | | | | | | | | The MANA hardware support protection domain and memory registration for use in RDMA environment. Add those definitions and expose them for use by the RDMA driver. Signed-off-by: Ajay Sharma <sharmaajay@microsoft.com> Signed-off-by: Long Li <longli@microsoft.com> Link: https://lore.kernel.org/r/1667502990-2559-12-git-send-email-longli@linuxonhyperv.com Reviewed-by: Dexuan Cui <decui@microsoft.com> Acked-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
* net: mana: Define data structures for allocating doorbell page from GDMALong Li2022-11-101-0/+24
| | | | | | | | | | | The RDMA device needs to allocate doorbell pages for each user context. Define the GDMA data structures for use by the RDMA driver. Reviewed-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Long Li <longli@microsoft.com> Link: https://lore.kernel.org/r/1667502990-2559-11-git-send-email-longli@linuxonhyperv.com Acked-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
* net: mana: Define and process GDMA response code GDMA_STATUS_MORE_ENTRIESAjay Sharma2022-11-101-0/+2
| | | | | | | | | | | | | When doing memory registration, the PF may respond with GDMA_STATUS_MORE_ENTRIES to indicate a follow request is needed. This is not an error and should be processed as expected. Signed-off-by: Ajay Sharma <sharmaajay@microsoft.com> Reviewed-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Long Li <longli@microsoft.com> Link: https://lore.kernel.org/r/1667502990-2559-10-git-send-email-longli@linuxonhyperv.com Acked-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
* net: mana: Define max values for SGL entriesLong Li2022-11-102-3/+8
| | | | | | | | | | | | | The number of maximum SGl entries should be computed from the maximum WQE size for the intended queue type and the corresponding OOB data size. This guarantees the hardware queue can successfully queue requests up to the queue depth exposed to the upper layer. Reviewed-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Long Li <longli@microsoft.com> Link: https://lore.kernel.org/r/1667502990-2559-9-git-send-email-longli@linuxonhyperv.com Acked-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
* net: mana: Move header files to a common locationLong Li2022-11-105-0/+1565
In preparation to add MANA RDMA driver, move all the required header files to a common location for use by both Ethernet and RDMA drivers. Reviewed-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Long Li <longli@microsoft.com> Link: https://lore.kernel.org/r/1667502990-2559-8-git-send-email-longli@linuxonhyperv.com Acked-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
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