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2026-06-09net: mana: Cache MANA_QUERY_LINK_CONFIG result to avoid repeated HWC queriesErni Sri Satya Vennela
mana_query_link_cfg() sends an HWC command to firmware on every call, but the link speed and QoS values it returns only change when the driver explicitly calls mana_set_bw_clamp(). This function is called not only by userspace via ethtool get_link_ksettings, but also periodically by hv_netvsc through netvsc_get_link_ksettings and by the sysfs speed_show attribute via dev_attr_show, resulting in unnecessary HWC traffic every few minutes. Add a link_cfg_error field to mana_port_context to cache the query result. The field uses three states: 1 (not yet queried, initial value set during mana_probe_port), 0 (success, speed/max_speed are valid), or a negative errno for permanent errors like -EOPNOTSUPP when the hardware does not support the command. Transient errors and qos_unconfigured responses are not cached so that subsequent calls will retry. MANA is ops-locked because it implements net_shaper_ops, so the core already takes netdev_lock() around all ethtool_ops and net_shaper_ops entry points. Reuse that lock to serialize mana_query_link_cfg() and mana_set_bw_clamp(). This prevents a concurrent mana_set_bw_clamp() from racing with an in-flight query and publishing stale pre-clamp speed/max_speed. Invalidate the cache inside mana_set_bw_clamp() on success, so all current and future callers that change the link configuration automatically trigger a fresh query on the next mana_query_link_cfg() call. Also reset link_cfg_error during resume in mana_probe() under netdev_lock(), so that any query already in flight cannot later store 0 and silently overwrite the post-resume invalidation. Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com> Link: https://patch.msgid.link/20260606133301.2180073-1-ernis@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-09net: mana: Add support for PF device 0x00C1Haiyang Zhang
Update the device id table to include the new device id 0x00C1. This device's BAR layout is similar to VF's, update the function, mana_gd_init_registers(), accordingly. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/20260605212302.2135499-1-haiyangz@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-09RDMA/mana_ib: Allocate interrupt contexts on EQsLong Li
Use the GIC functions to allocate interrupt contexts for RDMA EQs. These interrupt contexts may be shared with Ethernet EQs when MSI-X vectors are limited. The driver now supports allocating dedicated MSI-X for each EQ. Indicate this capability through driver capability bits. The RDMA EQs pass use_msi_bitmap=false to share MSI-X vectors with Ethernet, while the capability flag advertises that the driver supports per-vPort EQ separation when hardware has sufficient vectors. Populate eq.irq on all RDMA EQs for consistency with the Ethernet path. Also relocate the GDMA_DRV_CAP_FLAG_1_HW_VPORT_LINK_AWARE define to its numeric BIT(6) position among the other capability flags. Signed-off-by: Long Li <longli@microsoft.com> Acked-by: Leon Romanovsky <leon@kernel.org> Link: https://patch.msgid.link/20260605005717.2059954-7-longli@microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-09net: mana: Allocate interrupt context for each EQ when creating vPortLong Li
Use GIC functions to create a dedicated interrupt context or acquire a shared interrupt context for each EQ when setting up a vPort. The caller now owns the GIC reference across the EQ create/destroy lifecycle: mana_create_eq() calls mana_gd_get_gic() before creating each EQ and mana_destroy_eq() calls mana_gd_put_gic() after destroying it. The msix_index invalidation is moved from mana_gd_deregister_irq() to the mana_gd_create_eq() error path so that mana_destroy_eq() can read the index before teardown. Signed-off-by: Long Li <longli@microsoft.com> Link: https://patch.msgid.link/20260605005717.2059954-6-longli@microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-09net: mana: Introduce GIC context with refcounting for interrupt managementLong Li
To allow Ethernet EQs to use dedicated or shared MSI-X vectors and RDMA EQs to share the same MSI-X, introduce a GIC (GDMA IRQ Context) with reference counting. This allows the driver to create an interrupt context on an assigned or unassigned MSI-X vector and share it across multiple EQ consumers. Signed-off-by: Long Li <longli@microsoft.com> Link: https://patch.msgid.link/20260605005717.2059954-4-longli@microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-09net: mana: Query device capabilities and configure MSI-X sharing for EQsLong Li
When querying the device, adjust the max number of queues to allow dedicated MSI-X vectors for each vPort. The per-vPort queue count is clamped towards MANA_DEF_NUM_QUEUES but will not exceed the hardware maximum reported by the device. MSI-X sharing among vPorts is enabled when there are not enough MSI-X vectors for dedicated allocation, or when the platform does not support dynamic MSI-X allocation (in which case all vectors are pre-allocated at probe time and sharing is always used). The msi_sharing flag is reset at the top of mana_gd_query_max_resources() so it is recomputed from current hardware state on each probe or resume cycle. Clamp apc->max_queues to gc->max_num_queues_vport in mana_init_port() so that on resume, if max_num_queues_vport has decreased due to fewer MSI-X vectors, num_queues is reduced accordingly before EQ allocation. A device reporting zero ports now results in a fatal probe error since the per-vPort MSI-X math requires at least one port. Rename mana_query_device_cfg() to mana_gd_query_device_cfg() as it is used at GDMA device probe time for querying device capabilities. Signed-off-by: Long Li <longli@microsoft.com> Link: https://patch.msgid.link/20260605005717.2059954-3-longli@microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-06-09net: mana: Create separate EQs for each vPortLong Li
To prepare for assigning vPorts to dedicated MSI-X vectors, remove EQ sharing among the vPorts and create dedicated EQs for each vPort. Move the EQ definition from struct mana_context to struct mana_port_context and update related support functions. Export mana_create_eq() and mana_destroy_eq() for use by the MANA RDMA driver. RSS QPs now take a vport reference via pd->vport_use_count to ensure EQs outlive all QP consumers. The vport must already be configured by a raw QP before an RSS QP can be created. EQs are only destroyed when the last QP (raw or RSS) on the PD releases its reference. Restrict each vport to a single RSS QP. The hardware only supports one steering configuration (indirection table / hash key) per vport, and mana_disable_vport_rx() on QP destroy disables RX globally for the vport. Previously, creating a second RSS QP would silently overwrite the first QP's steering config and destroy would blackhole all traffic. This is now explicitly rejected with -EBUSY. Existing applications (DPDK being the primary RDMA consumer) always create one RSS QP per vport, so no real-world flows are affected. Reject cross-port PD sharing for both raw and RSS QPs. Since EQs and vport configuration are per-port, a PD is bound to the port used by its first raw QP. Subsequent QPs on the same PD must use the same port or the creation fails with -EINVAL. Previously this was silently broken: with shared EQs it appeared to work, but with per-vPort EQs a cross-port PD would cause wrong-port EQ teardown and corruption. DPDK creates one PD per port so no existing flows are affected. Serialize mana_set_channels() and the async per-port queue reset handler against RDMA vport configuration to prevent RDMA from claiming the vport during the detach/attach window. A channel_changing flag is set under apc->vport_mutex before detach and checked by mana_cfg_vport() when called from the RDMA path, blocking RDMA from grabbing the vport during the entire window. When the port is down and RDMA already holds the vport, the channel change is rejected with -EBUSY. Signed-off-by: Long Li <longli@microsoft.com> Link: https://patch.msgid.link/20260605005717.2059954-2-longli@microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-22net: mana: Expose hardware diagnostic info via debugfsErni Sri Satya Vennela
Add debugfs entries to expose hardware configuration and diagnostic information that aids in debugging driver initialization and runtime operations without adding noise to dmesg. The debugfs directory for each PCI device is named using pci_name() (the unique BDF address), and its creation and removal is integrated into mana_gd_setup() and mana_gd_cleanup_device() respectively, so that all callers (probe, remove, suspend, resume, shutdown) share a single code path. Device-level entries (under /sys/kernel/debug/mana/<BDF>/): - num_msix_usable, max_num_queues: Max resources from hardware - gdma_protocol_ver, pf_cap_flags1: VF version negotiation results - num_vports, bm_hostmode: Device configuration Per-vPort entries (under /sys/kernel/debug/mana/<BDF>/vportN/): - port_handle: Hardware vPort handle - max_sq, max_rq: Max queues from vPort config - indir_table_sz: Indirection table size - steer_rx, steer_rss, steer_update_tab, steer_cqe_coalescing: Last applied steering configuration parameters Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20260519064621.772154-1-ernis@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-7.1-rc3). Conflicts: net/ipv4/igmp.c 726fa7da2d8c ("ipv4: igmp: get rid of IGMPV3_{QQIC,MRC} and simplify calculation") c6bebaa744f7 ("ipv4: igmp: annotate data-races in igmp_heard_query()") https://lore.kernel.org/a7365e4873340f7a5e30411207de3bf9@kernel.org Adjacent changes: net/psp/psp_main.c 30cb24f97d44 ("psp: strip variable-length PSP header in psp_dev_rcv()") c2b22277ad89 ("psp: validate IPv4 header fields in psp_dev_rcv()") net/sched/sch_fq_codel.c f83e07b29246 ("net/sched: sch_fq_codel: annotate data-races from fq_codel_dump_class_stats()") 3f3aa77ff1c8 ("net/sched: add qstats_cpu_drop_inc() helper") net/wireless/pmsr.c 0f3c0a197309 ("wifi: nl80211: fix NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST usage") 410aa47fd9d3 ("wifi: cfg80211: allow suppressing FTM result reporting for PD requests") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-05net: mana: Use per-queue allocation for tx_qp to reduce allocation sizeAditya Garg
Convert tx_qp from a single contiguous array allocation to per-queue individual allocations. Each mana_tx_qp struct is approximately 35KB. With many queues (e.g., 32/64), the flat array requires a single contiguous allocation that can fail under memory fragmentation. Change mana_tx_qp *tx_qp to mana_tx_qp **tx_qp (array of pointers), allocating each queue's mana_tx_qp individually via kvzalloc. This reduces each allocation to ~35KB and provides vmalloc fallback, avoiding allocation failure due to fragmentation. Signed-off-by: Aditya Garg <gargaditya@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/20260502074552.23857-2-gargaditya@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-05net: mana: Fix crash from unvalidated SHM offset read from BAR0 during FLRDipayaan Roy
During Function Level Reset recovery, the MANA driver reads hardware BAR0 registers that may temporarily contain garbage values. The SHM (Shared Memory) offset read from GDMA_REG_SHM_OFFSET is used to compute gc->shm_base, which is later dereferenced via readl() in mana_smc_poll_register(). If the hardware returns an unaligned or out-of-range value, the driver must not blindly use it, as this would propagate the hardware error into a kernel crash. The following crash was observed on an arm64 Hyper-V guest running kernel 6.17.0-3013-azure during VF reset recovery triggered by HWC timeout. [13291.785274] Unable to handle kernel paging request at virtual address ffff8000a200001b [13291.785311] Mem abort info: [13291.785332] ESR = 0x0000000096000021 [13291.785343] EC = 0x25: DABT (current EL), IL = 32 bits [13291.785355] SET = 0, FnV = 0 [13291.785363] EA = 0, S1PTW = 0 [13291.785372] FSC = 0x21: alignment fault [13291.785382] Data abort info: [13291.785391] ISV = 0, ISS = 0x00000021, ISS2 = 0x00000000 [13291.785404] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [13291.785412] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [13291.785421] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000014df3a1000 [13291.785432] [ffff8000a200001b] pgd=1000000100438403, p4d=1000000100438403, pud=1000000100439403, pmd=0068000fc2000711 [13291.785703] Internal error: Oops: 0000000096000021 [#1] SMP [13291.830975] Modules linked in: tls qrtr mana_ib ib_uverbs ib_core xt_owner xt_tcpudp xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables cfg80211 8021q garp mrp stp llc binfmt_misc joydev serio_raw nls_iso8859_1 hid_generic aes_ce_blk aes_ce_cipher polyval_ce ghash_ce sm4_ce_gcm sm4_ce_ccm sm4_ce sm4_ce_cipher hid_hyperv sm4 sm3_ce sha3_ce hv_netvsc hid vmgenid hyperv_keyboard hyperv_drm sch_fq_codel nvme_fabrics efi_pstore dm_multipath nfnetlink vsock_loopback vmw_vsock_virtio_transport_common hv_sock vmw_vsock_vmci_transport vmw_vmci vsock dmi_sysfs ip_tables x_tables autofs4 [13291.862630] CPU: 122 UID: 0 PID: 61796 Comm: kworker/122:2 Tainted: G W 6.17.0-3013-azure #13-Ubuntu VOLUNTARY [13291.869902] Tainted: [W]=WARN [13291.871901] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 01/08/2026 [13291.878086] Workqueue: events mana_serv_func [13291.880718] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [13291.884835] pc : mana_smc_poll_register+0x48/0xb0 [13291.887902] lr : mana_smc_setup_hwc+0x70/0x1c0 [13291.890493] sp : ffff8000ab79bbb0 [13291.892364] x29: ffff8000ab79bbb0 x28: ffff00410c8b5900 x27: ffff00410d630680 [13291.896252] x26: ffff004171f9fd80 x25: 000000016ed55000 x24: 000000017f37e000 [13291.899990] x23: 0000000000000000 x22: 000000016ed55000 x21: 0000000000000000 [13291.904497] x20: ffff8000a200001b x19: 0000000000004e20 x18: ffff8000a6183050 [13291.908308] x17: 0000000000000000 x16: 0000000000000000 x15: 000000000000000a [13291.912542] x14: 0000000000000004 x13: 0000000000000000 x12: 0000000000000000 [13291.916298] x11: 0000000000000000 x10: 0000000000000001 x9 : ffffc45006af1bd8 [13291.920945] x8 : ffff000151129000 x7 : 0000000000000000 x6 : 0000000000000000 [13291.925293] x5 : 000000015f214000 x4 : 000000017217a000 x3 : 000000016ed50000 [13291.930436] x2 : 000000016ed55000 x1 : 0000000000000000 x0 : ffff8000a1ffffff [13291.934342] Call trace: [13291.935736] mana_smc_poll_register+0x48/0xb0 (P) [13291.938611] mana_smc_setup_hwc+0x70/0x1c0 [13291.941113] mana_hwc_create_channel+0x1a0/0x3a0 [13291.944283] mana_gd_setup+0x16c/0x398 [13291.946584] mana_gd_resume+0x24/0x70 [13291.948917] mana_do_service+0x13c/0x1d0 [13291.951583] mana_serv_func+0x34/0x68 [13291.953732] process_one_work+0x168/0x3d0 [13291.956745] worker_thread+0x2ac/0x480 [13291.959104] kthread+0xf8/0x110 [13291.961026] ret_from_fork+0x10/0x20 [13291.963560] Code: d2807d00 9417c551 71000673 54000220 (b9400281) [13291.967299] ---[ end trace 0000000000000000 ]--- Disassembly of mana_smc_poll_register() around the crash site: Disassembly of section .text: 00000000000047c8 <mana_smc_poll_register>: 47c8: d503201f nop 47cc: d503201f nop 47d0: d503233f paciasp 47d4: f800865e str x30, [x18], #8 47d8: a9bd7bfd stp x29, x30, [sp, #-48]! 47dc: 910003fd mov x29, sp 47e0: a90153f3 stp x19, x20, [sp, #16] 47e4: 91007014 add x20, x0, #0x1c 47e8: 5289c413 mov w19, #0x4e20 47ec: f90013f5 str x21, [sp, #32] 47f0: 12001c35 and w21, w1, #0xff 47f4: 14000008 b 4814 <mana_smc_poll_register+0x4c> 47f8: 36f801e1 tbz w1, #31, 4834 <mana_smc_poll_register+0x6c> 47fc: 52800042 mov w2, #0x2 4800: d280fa01 mov x1, #0x7d0 4804: d2807d00 mov x0, #0x3e8 4808: 94000000 bl 0 <usleep_range_state> 480c: 71000673 subs w19, w19, #0x1 4810: 54000200 b.eq 4850 <mana_smc_poll_register+0x88> 4814: b9400281 ldr w1, [x20] <-- **** CRASHED HERE ***** 4818: d50331bf dmb oshld 481c: 2a0103e2 mov w2, w1 ... From the crash signature x20 = ffff8000a200001b, this address ends in 0x1b which is not 4-byte aligned, so the 'ldr w1, [x20]' instruction (readl) triggers the arm64 alignment fault (FSC = 0x21). The root cause is in mana_gd_init_vf_regs(), which computes: gc->shm_base = gc->bar0_va + mana_gd_r64(gc, GDMA_REG_SHM_OFFSET); The offset is used without any validation. The same problem exists in mana_gd_init_pf_regs() for sriov_base_off and sriov_shm_off. Fix this by validating all offsets before use: - VF: check shm_off is within BAR0, properly aligned to 4 bytes (readl requirement), and leaves room for the full 256-bit (32-byte) SMC aperture. - PF: check sriov_base_off is within BAR0, aligned to 8 bytes (readq requirement), and leaves room to safely read the sriov_shm_off register at sriov_base_off + GDMA_PF_REG_SHM_OFF. Then check sriov_shm_off leaves room for the full SMC aperture. All arithmetic uses subtraction rather than addition to avoid integer overflow on garbage values. Define SMC_APERTURE_SIZE (32 bytes, derived from the 256-bit aperture width) Return -EPROTO on invalid values. The existing recovery path in mana_serv_reset() already handles -EPROTO by falling through to PCI device rescan, giving the hardware another chance to present valid register values after reset. Fixes: 9bf66036d686 ("net: mana: Handle hardware recovery events when probing the device") Signed-off-by: Dipayaan Roy <dipayanroy@linux.microsoft.com> Link: https://patch.msgid.link/afQUMClyjmBVfD+u@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-04-20Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds
Pull rdma updates from Jason Gunthorpe: "The usual collection of driver changes, more core infrastructure updates that typical this cycle: - Minor cleanups and kernel-doc fixes in bnxt_re, hns, rdmavt, efa, ocrdma, erdma, rtrs, hfi1, ionic, and pvrdma - New udata validation framework and driver updates - Modernize CQ creation interface in mlx4 and mlx5, manage CQ umem in core - Promote UMEM to a core component, split out DMA block iterator logic - Introduce FRMR pools with aging, statistics, pinned handles, and netlink control and use it in mlx5 - Add PCIe TLP emulation support in mlx5 - Extend umem to work with revocable pinned dmabuf's and use it in irdma - More net namespace improvements for rxe - GEN4 hardware support in irdma - First steps to MW and UC support in mana_ib - Support for CQ umem and doorbells in bnxt_re - Drop opa_vnic driver from hfi1 Fixes: - IB/core zero dmac neighbor resolution race - GID table memory free - rxe pad/ICRC validation and r_key async errors - mlx4 external umem for CQ - umem DMA attributes on unmap - mana_ib RX steering on RSS QP destroy" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (116 commits) RDMA/core: Fix user CQ creation for drivers without create_cq RDMA/ionic: bound node_desc sysfs read with %.64s IB/core: Fix zero dmac race in neighbor resolution RDMA/mana_ib: Support memory windows RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv RDMA/core: Prefer NLA_NUL_STRING RDMA/core: Fix memory free for GID table RDMA/hns: Remove the duplicate calls to ib_copy_validate_udata_in() RDMA: Remove redundant = {} for udata req structs RDMA/irdma: Add missing comp_mask check in alloc_ucontext RDMA/hns: Add missing comp_mask check in create_qp RDMA/mlx5: Pull comp_mask validation into ib_copy_validate_udata_in_cm() RDMA: Use ib_copy_validate_udata_in_cm() for zero comp_mask RDMA/hns: Use ib_copy_validate_udata_in() RDMA/mlx4: Use ib_copy_validate_udata_in() for QP RDMA/mlx4: Use ib_copy_validate_udata_in() RDMA/mlx5: Use ib_copy_validate_udata_in() for MW RDMA/mlx5: Use ib_copy_validate_udata_in() for SRQ RDMA/pvrdma: Use ib_copy_validate_udata_in() for srq RDMA: Use ib_copy_validate_udata_in() for implicit full structs ...
2026-04-09RDMA/mana_ib: Support memory windowsKonstantin Taranov
Implement .alloc_mw() and .dealloc_mw() for mana device. This is just the basic infrastructure, MW is not practically usable until additional kernel support for allowing user space to submit MW work requests is completed. Link: https://patch.msgid.link/r/20260331090851.2276205-1-kotaranov@linux.microsoft.com Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Reviewed-by: Long Li <longli@microsoft.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2026-03-30RDMA/mana_ib: Disable RX steering on RSS QP destroyLong Li
When an RSS QP is destroyed (e.g. DPDK exit), mana_ib_destroy_qp_rss() destroys the RX WQ objects but does not disable vPort RX steering in firmware. This leaves stale steering configuration that still points to the destroyed RX objects. If traffic continues to arrive (e.g. peer VM is still transmitting) and the VF interface is subsequently brought up (mana_open), the firmware may deliver completions using stale CQ IDs from the old RX objects. These CQ IDs can be reused by the ethernet driver for new TX CQs, causing RX completions to land on TX CQs: WARNING: mana_poll_tx_cq+0x1b8/0x220 [mana] (is_sq == false) WARNING: mana_gd_process_eq_events+0x209/0x290 (cq_table lookup fails) Fix this by disabling vPort RX steering before destroying RX WQ objects. Note that mana_fence_rqs() cannot be used here because the fence completion is delivered on the CQ, which is polled by user-mode (e.g. DPDK) and not visible to the kernel driver. Refactor the disable logic into a shared mana_disable_vport_rx() in mana_en, exported for use by mana_ib, replacing the duplicate code. The ethernet driver's mana_dealloc_queues() is also updated to call this common function. Fixes: 0266a177631d ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter") Cc: stable@vger.kernel.org Signed-off-by: Long Li <longli@microsoft.com> Link: https://patch.msgid.link/20260325194100.1929056-1-longli@microsoft.com Signed-off-by: Leon Romanovsky <leon@kernel.org>
2026-03-26net: mana: Set default number of queues to 16Long Li
Set the default number of queues per vPort to MANA_DEF_NUM_QUEUES (16), as 16 queues can achieve optimal throughput for typical workloads. The actual number of queues may be lower if it exceeds the hardware reported limit. Users can increase the number of queues up to max_queues via ethtool if needed. Signed-off-by: Long Li <longli@microsoft.com> Link: https://patch.msgid.link/20260323194925.1766385-1-longli@microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-18net: mana: Add ethtool counters for RX CQEs in coalesced typeHaiyang Zhang
For RX CQEs with type CQE_RX_COALESCED_4, to measure the coalescing efficiency, add counters to count how many contains 2, 3, 4 packets respectively. Also, add a counter for the error case of first packet with length == 0. Reviewed-by: Long Li <longli@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/20260317191826.1346111-4-haiyangz@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-18net: mana: Add support for RX CQE CoalescingHaiyang Zhang
Our NIC can have up to 4 RX packets on 1 CQE. To support this feature, check and process the type CQE_RX_COALESCED_4. The default setting is disabled, to avoid possible regression on latency. And, add ethtool handler to switch this feature. To turn it on, run: ethtool -C <nic> rx-cqe-frames 4 To turn it off: ethtool -C <nic> rx-cqe-frames 1 The rx-cqe-nsec is the time out value in nanoseconds after the first packet arrival in a coalesced CQE to be sent. It's read-only for this NIC. Reviewed-by: Long Li <longli@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/20260317191826.1346111-3-haiyangz@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-10net: mana: hardening: Validate doorbell ID from GDMA_REGISTER_DEVICE responseErni Sri Satya Vennela
As a part of MANA hardening for CVM, add validation for the doorbell ID (db_id) received from hardware in the GDMA_REGISTER_DEVICE response to prevent out-of-bounds memory access when calculating the doorbell page address. In mana_gd_ring_doorbell(), the doorbell page address is calculated as: addr = db_page_base + db_page_size * db_index = (bar0_va + db_page_off) + db_page_size * db_index A hardware could return values that cause this address to fall outside the BAR0 MMIO region. In Confidential VM environments, hardware responses cannot be fully trusted. Add the following validations: - Store the BAR0 size (bar0_size) in gdma_context during probe. - Validate the doorbell page offset (db_page_off) read from device registers does not exceed bar0_size during initialization, converting mana_gd_init_registers() to return an error code. - Validate db_id from GDMA_REGISTER_DEVICE response against the maximum number of doorbell pages that fit within BAR0. Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com> Link: https://patch.msgid.link/20260306211212.543376-1-ernis@linux.microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-03-03net: mana: Trigger VF reset/recovery on health check failure due to HWC timeoutDipayaan Roy
The GF stats periodic query is used as mechanism to monitor HWC health check. If this HWC command times out, it is a strong indication that the device/SoC is in a faulty state and requires recovery. Today, when a timeout is detected, the driver marks hwc_timeout_occurred, clears cached stats, and stops rescheduling the periodic work. However, the device itself is left in the same failing state. Extend the timeout handling path to trigger the existing MANA VF recovery service by queueing a GDMA_EQE_HWC_RESET_REQUEST work item. This is expected to initiate the appropriate recovery flow by suspende resume first and if it fails then trigger a bus rescan. This change is intentionally limited to HWC command timeouts and does not trigger recovery for errors reported by the SoC as a normal command response. Signed-off-by: Dipayaan Roy <dipayanroy@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/aaFShvKnwR5FY8dH@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-02-12Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds
Pull rdma updates from Jason Gunthorpe: "Usual smallish cycle. The NFS biovec work to push it down into RDMA instead of indirecting through a scatterlist is pretty nice to see, been talked about for a long time now. - Various code improvements in irdma, rtrs, qedr, ocrdma, irdma, rxe - Small driver improvements and minor bug fixes to hns, mlx5, rxe, mana, mlx5, irdma - Robusness improvements in completion processing for EFA - New query_port_speed() verb to move past limited IBA defined speed steps - Support for SG_GAPS in rts and many other small improvements - Rare list corruption fix in iwcm - Better support different page sizes in rxe - Device memory support for mana - Direct bio vec to kernel MR for use by NFS-RDMA - QP rate limiting for bnxt_re - Remote triggerable NULL pointer crash in siw - DMA-buf exporter support for RDMA mmaps like doorbells" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (66 commits) RDMA/mlx5: Implement DMABUF export ops RDMA/uverbs: Add DMABUF object type and operations RDMA/uverbs: Support external FD uobjects RDMA/siw: Fix potential NULL pointer dereference in header processing RDMA/umad: Reject negative data_len in ib_umad_write IB/core: Extend rate limit support for RC QPs RDMA/mlx5: Support rate limit only for Raw Packet QP RDMA/bnxt_re: Report QP rate limit in debugfs RDMA/bnxt_re: Report packet pacing capabilities when querying device RDMA/bnxt_re: Add support for QP rate limiting MAINTAINERS: Drop RDMA files from Hyper-V section RDMA/uverbs: Add __GFP_NOWARN to ib_uverbs_unmarshall_recv() kmalloc svcrdma: use bvec-based RDMA read/write API RDMA/core: add rdma_rw_max_sge() helper for SQ sizing RDMA/core: add MR support for bvec-based RDMA operations RDMA/core: use IOVA-based DMA mapping for bvec RDMA operations RDMA/core: add bio_vec based RDMA read/write API RDMA/irdma: Use kvzalloc for paged memory DMA address array RDMA/rxe: Fix race condition in QP timer handlers RDMA/mana_ib: Add device‑memory support ...
2026-01-27RDMA/mana_ib: Add device‑memory supportKonstantin Taranov
Introduce a basic DM implementation that enables creating and registering device memory, and using the associated memory keys for networking operations. Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Link: https://patch.msgid.link/20260127082649.429018-1-kotaranov@linux.microsoft.com Signed-off-by: Leon Romanovsky <leon@kernel.org>
2026-01-13net: mana: Implement ndo_tx_timeout and serialize queue resets per port.Dipayaan Roy
Implement .ndo_tx_timeout for MANA so any stalled TX queue can be detected and a device-controlled port reset for all queues can be scheduled to a ordered workqueue. The reset for all queues on stall detection is recomended by hardware team. Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Dipayaan Roy <dipayanroy@linux.microsoft.com> Link: https://patch.msgid.link/20260112130552.GA11785@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-12-01net: mana: Handle hardware recovery events when probing the deviceLong Li
When MANA is being probed, it's possible that hardware is in recovery mode and the device may get GDMA_EQE_HWC_RESET_REQUEST over HWC in the middle of the probe. Detect such condition and go through the recovery service procedure. Signed-off-by: Long Li <longli@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/1764193552-9712-1-git-send-email-longli@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19net: mana: Drop TX skb on post_work_request failure and unmap resourcesAditya Garg
Drop TX packets when posting the work request fails and ensure DMA mappings are always cleaned up. Signed-off-by: Aditya Garg <gargaditya@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/1763464269-10431-3-git-send-email-gargaditya@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-19net: mana: Handle SKB if TX SGEs exceed hardware limitAditya Garg
The MANA hardware supports a maximum of 30 scatter-gather entries (SGEs) per TX WQE. Exceeding this limit can cause TX failures. Add ndo_features_check() callback to validate SKB layout before transmission. For GSO SKBs that would exceed the hardware SGE limit, clear NETIF_F_GSO_MASK to enforce software segmentation in the stack. Add a fallback in mana_start_xmit() to linearize non-GSO SKBs that still exceed the SGE limit. Also, Add ethtool counter for SKBs linearized Co-developed-by: Dipayaan Roy <dipayanroy@linux.microsoft.com> Signed-off-by: Dipayaan Roy <dipayanroy@linux.microsoft.com> Signed-off-by: Aditya Garg <gargaditya@linux.microsoft.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/1763464269-10431-2-git-send-email-gargaditya@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-17net: mana: Add standard counter rx_missed_errorsErni Sri Satya Vennela
Report standard counter stats->rx_missed_errors using hc_rx_discards_no_wqe from the hardware. Add a global workqueue to periodically run mana_query_gf_stats every 2 seconds to get the latest info in eth_stats and define a driver capability flag to notify hardware of the periodic queries. To avoid repeated failures and log flooding, the workqueue is not rescheduled if mana_query_gf_stats fails on HWC timeout error and the stats are reset to 0. Other errors are transient which will not need a VF reset for recovery. Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/1763120599-6331-3-git-send-email-ernis@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-11-17net: mana: Move hardware counter stats from per-port to per-VF contextErni Sri Satya Vennela
Move hardware counter (HC) statistics from mana_port_context to mana_context to enable sharing stats across multiple network ports on the same MANA VF. Previously, each network port queried hardware counters independently using MANA_QUERY_GF_STAT command (GF = Generic Function stats from GDMA hardware), resulting in redundant queries when multiple ports existed on the same device. Isolate hardware counter stats by introducing mana_ethtool_hc_stats in mana_context and update the code to ensure all stats are properly reported via ethtool -S <interface>, maintaining consistency with previous behavior. Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/1763120599-6331-2-git-send-email-ernis@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-10-31net: mana: Support HW link state eventsHaiyang Zhang
Handle the NIC hardware link state events received from the HW channel, then set the proper link state accordingly. And, add a feature bit, GDMA_DRV_CAP_FLAG_1_HW_VPORT_LINK_AWARE, to inform the NIC hardware this handler exists. Our MANA NIC only sends out the link state down/up messages when we need to let the VM rerun DHCP client and change IP address. So, add netif_carrier_on() in the probe(), let the NIC show the right initial state in /sys/class/net/ethX/operstate. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/1761770601-16920-1-git-send-email-haiyangz@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-19net: mana: Use page pool fragments for RX buffers instead of full pages to ↵Dipayaan Roy
improve memory efficiency. This patch enhances RX buffer handling in the mana driver by allocating pages from a page pool and slicing them into MTU-sized fragments, rather than dedicating a full page per packet. This approach is especially beneficial on systems with large base page sizes like 64KB. Key improvements: - Proper integration of page pool for RX buffer allocations. - MTU-sized buffer slicing to improve memory utilization. - Reduce overall per Rx queue memory footprint. - Automatic fallback to full-page buffers when: * Jumbo frames are enabled (MTU > PAGE_SIZE / 2). * The XDP path is active, to avoid complexities with fragment reuse. Testing on VMs with 64KB pages shows around 200% throughput improvement. Memory efficiency is significantly improved due to reduced wastage in page allocations. Example: We are now able to fit 35 rx buffers in a single 64kb page for MTU size of 1500, instead of 1 rx buffer per page previously. Tested: - iperf3, iperf2, and nttcp benchmarks. - Jumbo frames with MTU 9000. - Native XDP programs (XDP_PASS, XDP_DROP, XDP_TX, XDP_REDIRECT) for testing the XDP path in driver. - Memory leak detection (kmemleak). - Driver load/unload, reboot, and stress scenarios. Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Dipayaan Roy <dipayanroy@linux.microsoft.com> Link: https://patch.msgid.link/20250814140410.GA22089@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-07-01net: mana: Handle Reset Request from MANA NICHaiyang Zhang
Upon receiving the Reset Request, pause the connection and clean up queues, wait for the specified period, then resume the NIC. In the cleanup phase, the HWC is no longer responding, so set hwc_timeout to zero to skip waiting on the response. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/1751055983-29760-1-git-send-email-haiyangz@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-19net: mana: Handle unsupported HWC commandsErni Sri Satya Vennela
If any of the HWC commands are not recognized by the underlying hardware, the hardware returns the response header status of -1. Log the information using netdev_info_once to avoid multiple error logs in dmesg. Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Saurabh Singh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Dipayaan Roy <dipayanroy@linux.microsoft.com> Link: https://patch.msgid.link/1750144656-2021-5-git-send-email-ernis@linux.microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-06-19net: mana: Add speed support in mana_get_link_ksettingsErni Sri Satya Vennela
Allow mana ethtool get_link_ksettings operation to report the maximum speed supported by the SKU in mbps. The driver retrieves this information by issuing a HWC command to the hardware via mana_query_link_cfg(), which retrieves the SKU's maximum supported speed. These APIs when invoked on hardware that are older/do not support these APIs, the speed would be reported as UNKNOWN. Before: $ethtool enP30832s1 > Settings for enP30832s1: Supported ports: [ ] Supported link modes: Not reported Supported pause frame use: No Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: Unknown! Duplex: Full Auto-negotiation: off Port: Other PHYAD: 0 Transceiver: internal Link detected: yes After: $ethtool enP30832s1 > Settings for enP30832s1: Supported ports: [ ] Supported link modes: Not reported Supported pause frame use: No Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: 16000Mb/s Duplex: Full Auto-negotiation: off Port: Other PHYAD: 0 Transceiver: internal Link detected: yes Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Saurabh Singh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Long Li <longli@microsoft.com> Link: https://patch.msgid.link/1750144656-2021-4-git-send-email-ernis@linux.microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-06-19net: mana: Add support for net_shaper_opsErni Sri Satya Vennela
Introduce support for net_shaper_ops in the MANA driver, enabling configuration of rate limiting on the MANA NIC. To apply rate limiting, the driver issues a HWC command via mana_set_bw_clamp() and updates the corresponding shaper object in the net_shaper cache. If an error occurs during this process, the driver restores the previous speed by querying the current link configuration using mana_query_link_cfg(). The minimum supported bandwidth is 100 Mbps, and only values that are exact multiples of 100 Mbps are allowed. Any other values are rejected. To remove a shaper, the driver resets the bandwidth to the maximum supported by the SKU using mana_set_bw_clamp() and clears the associated cache entry. If an error occurs during this process, the shaper details are retained. On the hardware that does not support these APIs, the net-shaper calls to set speed would fail. Set the speed: ./tools/net/ynl/pyynl/cli.py \ --spec Documentation/netlink/specs/net_shaper.yaml \ --do set --json '{"ifindex":'$IFINDEX', "handle":{"scope": "netdev", "id":'$ID' }, "bw-max": 200000000 }' Get the shaper details: ./tools/net/ynl/pyynl/cli.py \ --spec Documentation/netlink/specs/net_shaper.yaml \ --do get --json '{"ifindex":'$IFINDEX', "handle":{"scope": "netdev", "id":'$ID' }}' > {'bw-max': 200000000, > 'handle': {'scope': 'netdev'}, > 'ifindex': $IFINDEX, > 'metric': 'bps'} Delete the shaper object: ./tools/net/ynl/pyynl/cli.py \ --spec Documentation/netlink/specs/net_shaper.yaml \ --do delete --json '{"ifindex":'$IFINDEX', "handle":{"scope": "netdev","id":'$ID' }}' Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Saurabh Singh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Long Li <longli@microsoft.com> Link: https://patch.msgid.link/1750144656-2021-3-git-send-email-ernis@linux.microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-06-17Merge branch 'shradha_v6.16-rc1' of https://github.com/shradhagupta6/linuxJakub Kicinski
Shradha Gupta says: ==================== Allow dyn MSI-X vector allocation of MANA In this patchset we want to enable the MANA driver to be able to allocate MSI-X vectors in PCI dynamically. The first patch exports pci_msix_prepare_desc() in PCI to be able to correctly prepare descriptors for dynamically added MSI-X vectors. The second patch adds the support of dynamic vector allocation in pci-hyperv PCI controller by enabling the MSI_FLAG_PCI_MSIX_ALLOC_DYN flag and using the pci_msix_prepare_desc() exported in first patch. The third patch adds a detailed description of the irq_setup(), to help understand the function design better. The fourth patch is a preparation patch for mana changes to support dynamic IRQ allocation. It contains changes in irq_setup() to allow skipping first sibling CPU sets, in case certain IRQs are already affinitized to them. The fifth patch has the changes in MANA driver to be able to allocate MSI-X vectors dynamically. If the support does not exist it defaults to older behavior. * 'shradha_v6.16-rc1' of https://github.com/shradhagupta6/linux: net: mana: Allocate MSI-X vectors dynamically net: mana: Allow irq_setup() to skip cpus for affinity net: mana: explain irq_setup() algorithm PCI: hv: Allow dynamic MSI-X vector allocation PCI/MSI: Export pci_msix_prepare_desc() for dynamic MSI-X allocations ==================== Link: https://patch.msgid.link/1749650984-9193-1-git-send-email-shradhagupta@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-17net: mana: Allocate MSI-X vectors dynamicallyShradha Gupta
Currently, the MANA driver allocates MSI-X vectors statically based on MANA_MAX_NUM_QUEUES and num_online_cpus() values and in some cases ends up allocating more vectors than it needs. This is because, by this time we do not have a HW channel and do not know how many IRQs should be allocated. To avoid this, we allocate 1 MSI-X vector during the creation of HWC and after getting the value supported by hardware, dynamically add the remaining MSI-X vectors. Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
2025-06-16net: mana: Add handler for hardware servicing eventsHaiyang Zhang
To collaborate with hardware servicing events, upon receiving the special EQE notification from the HW channel, remove the devices on this bus. Then, after a waiting period based on the device specs, rescan the parent bus to recover the devices. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/1749834034-18498-1-git-send-email-haiyangz@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-06-10net: mana: Expose additional hardware counters for drop and TC via ethtool.Dipayaan Roy
Add support for reporting additional hardware counters for drop and TC using the ethtool -S interface. These counters include: - Aggregate Rx/Tx drop counters - Per-TC Rx/Tx packet counters - Per-TC Rx/Tx byte counters - Per-TC Rx/Tx pause frame counters The counters are exposed using ethtool_ops->get_ethtool_stats and ethtool_ops->get_strings. This feature/counters are not available to all versions of hardware. Signed-off-by: Dipayaan Roy <dipayanroy@linux.microsoft.com> Reviewed-by: Subbaraya Sundeep <sbhatta@marvell.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/20250609100103.GA7102@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-30Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds
Pull rdma updates from Jason Gunthorpe: "Usual collection of driver fixes: - Small bug fixes and cleansup in hfi, hns, rxe, mlx5, mana siw - Further ODP functionality in rxe - Remote access MRs in mana, along with more page sizes - Improve CM scalability with a rwlock around the agent - More trace points for hns - ODP hmm conversion to the new two step dma API - Support the ethernet HW device in mana as well as the RNIC - Cleanups: - Use secs_to_jiffies() when appropriate - Use ERR_CAST() instead of naked casts - Don't use %pK in printk - Unusued functions removed - Allocation type matching" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (57 commits) RDMA/cma: Fix hang when cma_netevent_callback fails to queue_work RDMA/bnxt_re: Support extended stats for Thor2 VF RDMA/hns: Fix endian issue in trace events RDMA/mlx5: Avoid flexible array warning IB/cm: Remove dead code and adjust naming RDMA/core: Avoid hmm_dma_map_alloc() for virtual DMA devices RDMA/rxe: Break endless pagefault loop for RO pages RDMA/bnxt_re: Fix return code of bnxt_re_configure_cc RDMA/bnxt_re: Fix missing error handling for tx_queue RDMA/bnxt_re: Fix incorrect display of inactivity_cp in debugfs output RDMA/mlx5: Add support for 200Gbps per lane speeds RDMA/mlx5: Remove the redundant MLX5_IB_STAGE_UAR stage RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction net: mana: Add support for auxiliary device servicing events RDMA/mana_ib: unify mana_ib functions to support any gdma device RDMA/mana_ib: Add support of mana_ib for RNIC and ETH nic net: mana: Probe rdma device in mana driver RDMA/siw: replace redundant ternary operator with just rv RDMA/umem: Separate implicit ODP initialization from explicit ODP RDMA/core: Convert UMEM ODP DMA mapping to caching IOVA and page linkage ...
2025-05-28net: mana: Add support for Multi Vports on Bare metalHaiyang Zhang
To support Multi Vports on Bare metal, increase the device config response version. And, skip the register HW vport, and register filter steps, when the Bare metal hostmode is set. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://patch.msgid.link/1747671636-5810-1-git-send-email-haiyangz@microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-05-12net: mana: Add support for auxiliary device servicing eventsShiraz Saleem
Handle soc servicing events which require the rdma auxiliary device resources to be cleaned up during a suspend, and re-initialized during a resume. Signed-off-by: Shiraz Saleem <shirazsaleem@microsoft.com> Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Link: https://patch.msgid.link/1746633545-17653-5-git-send-email-kotaranov@linux.microsoft.com Signed-off-by: Leon Romanovsky <leon@kernel.org>
2025-05-12net: mana: Probe rdma device in mana driverKonstantin Taranov
Initialize gdma device for rdma inside mana module. For each gdma device, initialize an auxiliary ib device. Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Link: https://patch.msgid.link/1746633545-17653-2-git-send-email-kotaranov@linux.microsoft.com Reviewed-by: Long Li <longli@microsoft.com> Signed-off-by: Leon Romanovsky <leon@kernel.org>
2025-04-20RDMA/mana_ib: Add support of 4M, 1G, and 2G pagesKonstantin Taranov
Check PF capability flag whether the 4M, 1G, and 2G pages are supported. Add these pages sizes to mana_ib, if supported. Define possible page sizes in enum gdma_page_type and remove unused enum atb_page_size. Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Link: https://patch.msgid.link/1744621234-26114-4-git-send-email-kotaranov@linux.microsoft.com Reviewed-by: Long Li <longli@microsoft.com> Signed-off-by: Leon Romanovsky <leon@kernel.org>
2025-04-20RDMA/mana_ib: support of the zero based MRsKonstantin Taranov
Add IB_ZERO_BASED to the valid flags and use the corresponding MR creation request for the zero based memory. Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Link: https://patch.msgid.link/1744621234-26114-3-git-send-email-kotaranov@linux.microsoft.com Reviewed-by: Long Li <longli@microsoft.com> Signed-off-by: Leon Romanovsky <leon@kernel.org>
2025-03-29Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds
Pull rdma updates from Jason Gunthorpe: - Usual minor updates and fixes for bnxt_re, hfi1, rxe, mana, iser, mlx5, vmw_pvrdma, hns - Make rxe work on tun devices - mana gains more standard verbs as it moves toward supporting in-kernel verbs - DMABUF support for mana - Fix page size calculations when memory registration exceeds 4G - On Demand Paging support for rxe - mlx5 support for RDMA TRANSPORT flow tables and a new ucap mechanism to access control use of them - Optional RDMA_TX/RX counters per QP in mlx5 * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (73 commits) IB/mad: Check available slots before posting receive WRs RDMA/mana_ib: Fix integer overflow during queue creation RDMA/mlx5: Fix calculation of total invalidated pages RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow RDMA/mlx5: Fix page_size variable overflow RDMA/mlx5: Drop access_flags from _mlx5_mr_cache_alloc() RDMA/mlx5: Fix cache entry update on dereg error RDMA/mlx5: Fix MR cache initialization error flow RDMA/mlx5: Support optional-counters binding for QPs RDMA/mlx5: Compile fs.c regardless of INFINIBAND_USER_ACCESS config RDMA/core: Pass port to counter bind/unbind operations RDMA/core: Add support to optional-counters binding configuration RDMA/core: Create and destroy rdma_counter using rdma_zalloc_drv_obj() RDMA/mlx5: Add optional counters for RDMA_TX/RX_packets/bytes RDMA/core: Fix use-after-free when rename device name RDMA/bnxt_re: Support perf management counters RDMA/rxe: Fix incorrect return value of rxe_odp_atomic_op() RDMA/uverbs: Propagate errors from rdma_lookup_get_uobject() RDMA/mana_ib: Handle net event for pointing to the current netdev net: mana: Change the function signature of mana_get_primary_netdev_rcu ...
2025-03-18net: mana: Support holes in device list reply msgHaiyang Zhang
According to GDMA protocol, holes (zeros) are allowed at the beginning or middle of the gdma_list_devices_resp message. The existing code cannot properly handle this, and may miss some devices in the list. To fix, scan the entire list until the num_of_devs are found, or until the end of the list. 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: Long Li <longli@microsoft.com> Reviewed-by: Shradha Gupta <shradhagupta@microsoft.com> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Link: https://patch.msgid.link/1741723974-1534-1-git-send-email-haiyangz@microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-13net: mana: Change the function signature of mana_get_primary_netdev_rcuLong Li
Change mana_get_primary_netdev_rcu() to mana_get_primary_netdev(), and return the ndev with refcount held. The caller is responsible for dropping the refcount. Also drop the check for IFF_SLAVE as it is not necessary if the upper device is present. Signed-off-by: Long Li <longli@microsoft.com> Link: https://patch.msgid.link/1741821332-9392-1-git-send-email-longli@linuxonhyperv.com Signed-off-by: Leon Romanovsky <leon@kernel.org>
2025-02-06RDMA/mana_ib: Query feature_flags bitmask from FWShiraz Saleem
Extend the mana_ib_gd_query_adapter_caps function to retrieve and store the feature_flags from the firmware response. Signed-off-by: Shiraz Saleem <shirazsaleem@microsoft.com> Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Link: https://patch.msgid.link/1738751713-16169-2-git-send-email-kotaranov@linux.microsoft.com Signed-off-by: Leon Romanovsky <leon@kernel.org>
2025-02-03RDMA/mana_ib: implement get_dma_mrKonstantin Taranov
Implement allocation of DMA-mapped memory regions. Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Link: https://patch.msgid.link/1737394039-28772-3-git-send-email-kotaranov@linux.microsoft.com Reviewed-by: Shiraz Saleem <shirazsaleem@microsoft.com> Reviewed-by: Long Li <longli@microsoft.com> Signed-off-by: Leon Romanovsky <leon@kernel.org>
2025-02-03RDMA/mana_ib: Allow registration of DMA-mapped memory in PDsKonstantin Taranov
Allow the HW to register DMA-mapped memory for kernel-level PDs. Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Link: https://patch.msgid.link/1737394039-28772-2-git-send-email-kotaranov@linux.microsoft.com Reviewed-by: Shiraz Saleem <shirazsaleem@microsoft.com> Reviewed-by: Long Li <longli@microsoft.com> Signed-off-by: Leon Romanovsky <leon@kernel.org>
2024-10-09net: mana: Enable debugfs files for MANA deviceShradha Gupta
Implement debugfs in MANA driver to be able to view RX,TX,EQ queue specific attributes and dump their gdma queues. These dumps can be used by other userspace utilities to improve debuggability and troubleshooting Following files are added in debugfs: /sys/kernel/debug/mana/ |-------------- 1 |--------------- EQs | |------- eq0 | | |---head | | |---tail | | |---eq_dump | |------- eq1 | . | . | |--------------- adapter-MTU |--------------- vport0 |------- RX-0 | |---cq_budget | |---cq_dump | |---cq_head | |---cq_tail | |---rq_head | |---rq_nbuf | |---rq_tail | |---rxq_dump |------- RX-1 . . |------- TX-0 | |---cq_budget | |---cq_dump | |---cq_head | |---cq_tail | |---sq_head | |---sq_pend_skb_qlen | |---sq_tail | |---txq_dump |------- TX-1 . . Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3 (git 2.39.1) at 2026-07-09 07:09:30 +0000