linux-stable.git/include/linux/mlx5, branch linux-5.15.y

net/mlx5e: Expose rx_oversize_pkts_buffer counter

2026-02-06T15:42:00+00:00

[ Upstream commit 16ab85e78439bab1201ff26ba430231d1574b4ae ]

Add the rx_oversize_pkts_buffer counter to ethtool statistics.
This counter exposes the number of dropped received packets due to
length which arrived to RQ and exceed software buffer size allocated by
the device for incoming traffic. It might imply that the device MTU is
larger than the software buffers size.

Signed-off-by: Gal Pressman 
Reviewed-by: Tariq Toukan 
Signed-off-by: Saeed Mahameed 
Signed-off-by: Jakub Kicinski 
Stable-dep-of: 476681f10cc1 ("net/mlx5e: Account for netdev stats in ndo_get_stats64")
Signed-off-by: Sasha Levin

net/mlx5: Add HW definitions of vport debug counters

2026-02-06T15:41:59+00:00

[ Upstream commit 3e94e61bd44d90070dcda53b647fdc826097ef26 ]

total_q_under_processor_handle - number of queues in error state due to an
async error or errored command.

send_queue_priority_update_flow - number of QP/SQ priority/SL update
events.

cq_overrun - number of times CQ entered an error state due to an
overflow.

async_eq_overrun -number of time an EQ mapped to async events was
overrun.

comp_eq_overrun - number of time an EQ mapped to completion events was
overrun.

quota_exceeded_command - number of commands issued and failed due to quota
exceeded.

invalid_command - number of commands issued and failed dues to any reason
other than quota exceeded.

Signed-off-by: Saeed Mahameed 
Signed-off-by: Michael Guralnik 
Signed-off-by: Saeed Mahameed 
Stable-dep-of: 476681f10cc1 ("net/mlx5e: Account for netdev stats in ndo_get_stats64")
Signed-off-by: Sasha Levin

net/mlx5e: Add support to klm_umr_wqe

2025-08-28T14:24:02+00:00

[ Upstream commit d7b896acbdcb3ef5dab1fd2f33ba5a8da6ba1dda ]

This commit adds the needed definitions for using the klm_umr_wqe.
UMR stands for user-mode memory registration, is a mechanism to alter
address translation properties of MKEY by posting WorkQueueElement
aka WQE on send queue.
MKEY stands for memory key, MKEY are used to describe a region in memory that
can be later used by HW.
KLM stands for {Key, Length, MemVa}, KLM_MKEY is indirect MKEY that enables
to map multiple memory spaces with different sizes in unified MKEY.
klm_umr_wqe is a UMR that use to update a KLM_MKEY.
SHAMPO feature uses KLM_MKEY for memory registration of his header buffer.

Signed-off-by: Ben Ben-Ishay 
Reviewed-by: Tariq Toukan 
Signed-off-by: Saeed Mahameed 
Stable-dep-of: 531d0d32de3e ("net/mlx5: Correctly set gso_size when LRO is used")
Signed-off-by: Sasha Levin

RDMA/mlx5: Fix error flow upon firmware failure for RQ destruction

2025-06-27T10:05:12+00:00

[ Upstream commit 5d2ea5aebbb2f3ebde4403f9c55b2b057e5dd2d6 ]

Upon RQ destruction if the firmware command fails which is the
last resource to be destroyed some SW resources were already cleaned
regardless of the failure.

Now properly rollback the object to its original state upon such failure.

In order to avoid a use-after free in case someone tries to destroy the
object again, which results in the following kernel trace:
refcount_t: underflow; use-after-free.
WARNING: CPU: 0 PID: 37589 at lib/refcount.c:28 refcount_warn_saturate+0xf4/0x148
Modules linked in: rdma_ucm(OE) rdma_cm(OE) iw_cm(OE) ib_ipoib(OE) ib_cm(OE) ib_umad(OE) mlx5_ib(OE) rfkill mlx5_core(OE) mlxdevm(OE) ib_uverbs(OE) ib_core(OE) psample mlxfw(OE) mlx_compat(OE) macsec tls pci_hyperv_intf sunrpc vfat fat virtio_net net_failover failover fuse loop nfnetlink vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vmw_vmci vsock xfs crct10dif_ce ghash_ce sha2_ce sha256_arm64 sha1_ce virtio_console virtio_gpu virtio_blk virtio_dma_buf virtio_mmio dm_mirror dm_region_hash dm_log dm_mod xpmem(OE)
CPU: 0 UID: 0 PID: 37589 Comm: python3 Kdump: loaded Tainted: G           OE     -------  ---  6.12.0-54.el10.aarch64 #1
Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : refcount_warn_saturate+0xf4/0x148
lr : refcount_warn_saturate+0xf4/0x148
sp : ffff80008b81b7e0
x29: ffff80008b81b7e0 x28: ffff000133d51600 x27: 0000000000000001
x26: 0000000000000000 x25: 00000000ffffffea x24: ffff00010ae80f00
x23: ffff00010ae80f80 x22: ffff0000c66e5d08 x21: 0000000000000000
x20: ffff0000c66e0000 x19: ffff00010ae80340 x18: 0000000000000006
x17: 0000000000000000 x16: 0000000000000020 x15: ffff80008b81b37f
x14: 0000000000000000 x13: 2e656572662d7265 x12: ffff80008283ef78
x11: ffff80008257efd0 x10: ffff80008283efd0 x9 : ffff80008021ed90
x8 : 0000000000000001 x7 : 00000000000bffe8 x6 : c0000000ffff7fff
x5 : ffff0001fb8e3408 x4 : 0000000000000000 x3 : ffff800179993000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000133d51600
Call trace:
 refcount_warn_saturate+0xf4/0x148
 mlx5_core_put_rsc+0x88/0xa0 [mlx5_ib]
 mlx5_core_destroy_rq_tracked+0x64/0x98 [mlx5_ib]
 mlx5_ib_destroy_wq+0x34/0x80 [mlx5_ib]
 ib_destroy_wq_user+0x30/0xc0 [ib_core]
 uverbs_free_wq+0x28/0x58 [ib_uverbs]
 destroy_hw_idr_uobject+0x34/0x78 [ib_uverbs]
 uverbs_destroy_uobject+0x48/0x240 [ib_uverbs]
 __uverbs_cleanup_ufile+0xd4/0x1a8 [ib_uverbs]
 uverbs_destroy_ufile_hw+0x48/0x120 [ib_uverbs]
 ib_uverbs_close+0x2c/0x100 [ib_uverbs]
 __fput+0xd8/0x2f0
 __fput_sync+0x50/0x70
 __arm64_sys_close+0x40/0x90
 invoke_syscall.constprop.0+0x74/0xd0
 do_el0_svc+0x48/0xe8
 el0_svc+0x44/0x1d0
 el0t_64_sync_handler+0x120/0x130
 el0t_64_sync+0x1a4/0x1a8

Fixes: e2013b212f9f ("net/mlx5_core: Add RQ and SQ event handling")
Signed-off-by: Patrisious Haddad 
Link: https://patch.msgid.link/3181433ccdd695c63560eeeb3f0c990961732101.1745839855.git.leon@kernel.org
Signed-off-by: Leon Romanovsky 
Signed-off-by: Sasha Levin

net/mlx5: use do_aux_work for PHC overflow checks

2025-03-13T11:50:18+00:00

[ Upstream commit e61e6c415ba9ff2b32bb6780ce1b17d1d76238f1 ]

The overflow_work is using system wq to do overflow checks and updates
for PHC device timecounter, which might be overhelmed by other tasks.
But there is dedicated kthread in PTP subsystem designed for such
things. This patch changes the work queue to proper align with PTP
subsystem and to avoid overloading system work queue.
The adjfine() function acts the same way as overflow check worker,
we can postpone ptp aux worker till the next overflow period after
adjfine() was called.

Reviewed-by: Dragos Tatulea 
Signed-off-by: Vadim Fedorenko 
Acked-by: Tariq Toukan 
Link: https://patch.msgid.link/20250107104812.380225-1-vadfed@meta.com
Signed-off-by: Paolo Abeni 
Signed-off-by: Sasha Levin

RDMA/mlx5: Remove iova from struct mlx5_core_mkey

2025-03-13T11:50:07+00:00

[ Upstream commit cf6a8b1b24d675afc35a01cccd081160014a0125 ]

iova is already stored in ibmr->iova, no need to store it here.

Signed-off-by: Aharon Landau 
Reviewed-by: Shay Drory 
Acked-by: Michael S. Tsirkin 
Signed-off-by: Leon Romanovsky 
Stable-dep-of: 235f23840219 ("RDMA/mlx5: Fix indirect mkey ODP page count")
Signed-off-by: Sasha Levin

net/mlx5: Add priorities for counters in RDMA namespaces

2025-01-23T16:15:59+00:00

[ Upstream commit b8dfed636fc6239396c3a2ae5f812505906cf215 ]

Add additional flow steering priorities in the RDMA namespace.
This allows adding flow counters to count filtered RDMA traffic and then
continue processing in the regular RDMA steering flow.

Signed-off-by: Aharon Landau 
Reviewed-by: Maor Gottlieb 
Signed-off-by: Mark Zhang 
Signed-off-by: Leon Romanovsky 
Stable-dep-of: c08d3e62b2e7 ("net/mlx5: Fix RDMA TX steering prio")
Signed-off-by: Sasha Levin

RDMA/mlx5: Enforce same type port association for multiport RoCE

2025-01-09T12:28:44+00:00

[ Upstream commit e05feab22fd7dabcd6d272c4e2401ec1acdfdb9b ]

Different core device types such as PFs and VFs shouldn't be affiliated
together since they have different capabilities, fix that by enforcing
type check before doing the affiliation.

Fixes: 32f69e4be269 ("{net, IB}/mlx5: Manage port association for multiport RoCE")
Reviewed-by: Mark Bloch 
Signed-off-by: Patrisious Haddad 
Link: https://patch.msgid.link/88699500f690dff1c1852c1ddb71f8a1cc8b956e.1733233480.git.leonro@nvidia.com
Reviewed-by: Mateusz Polchlopek 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Sasha Levin

net/mlx5: Add missing masks and QoS bit masks for scheduling elements

2024-10-17T13:10:36+00:00

[ Upstream commit 452ef7f86036392005940de54228d42ca0044192 ]

Add the missing masks for supported element types and Transmit
Scheduling Arbiter (TSAR) types in scheduling elements.

Also, add the corresponding bit masks for these types in the QoS
capabilities of a NIC scheduler.

Fixes: 214baf22870c ("net/mlx5e: Support HTB offload")
Signed-off-by: Carolina Jubran 
Reviewed-by: Cosmin Ratiu 
Signed-off-by: Saeed Mahameed 
Signed-off-by: Sasha Levin

net/mlx5: Add IFC bits and enums for flow meter

2024-10-17T13:10:36+00:00

[ Upstream commit f5d23ee137e51b4e5cd5d263b144d5e6719f6e52 ]

Add/extend structure layouts and defines for flow meter.

Signed-off-by: Jianbo Liu 
Reviewed-by: Ariel Levkovich 
Signed-off-by: Saeed Mahameed 
Stable-dep-of: 452ef7f86036 ("net/mlx5: Add missing masks and QoS bit masks for scheduling elements")
Signed-off-by: Sasha Levin