linux/include/net/mana, branch v6.15

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

2025-03-29T18:12:28Z

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 ...

net: mana: Support holes in device list reply msg

2025-03-18T10:32:15Z

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 Reviewed-by: Long Li Reviewed-by: Shradha Gupta Reviewed-by: Michal Swiatkowski Link: https://patch.msgid.link/1741723974-1534-1-git-send-email-haiyangz@microsoft.com Signed-off-by: Paolo Abeni

net: mana: Change the function signature of mana_get_primary_netdev_rcu

2025-03-13T12:03:02Z

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 Link: https://patch.msgid.link/1741821332-9392-1-git-send-email-longli@linuxonhyperv.com Signed-off-by: Leon Romanovsky

RDMA/mana_ib: Query feature_flags bitmask from FW

2025-02-06T08:51:13Z

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 Signed-off-by: Konstantin Taranov Link: https://patch.msgid.link/1738751713-16169-2-git-send-email-kotaranov@linux.microsoft.com Signed-off-by: Leon Romanovsky

RDMA/mana_ib: implement get_dma_mr

2025-02-03T11:56:19Z

Implement allocation of DMA-mapped memory regions. Signed-off-by: Konstantin Taranov Link: https://patch.msgid.link/1737394039-28772-3-git-send-email-kotaranov@linux.microsoft.com Reviewed-by: Shiraz Saleem Reviewed-by: Long Li Signed-off-by: Leon Romanovsky

RDMA/mana_ib: Allow registration of DMA-mapped memory in PDs

2025-02-03T11:56:19Z

Allow the HW to register DMA-mapped memory for kernel-level PDs. Signed-off-by: Konstantin Taranov Link: https://patch.msgid.link/1737394039-28772-2-git-send-email-kotaranov@linux.microsoft.com Reviewed-by: Shiraz Saleem Reviewed-by: Long Li Signed-off-by: Leon Romanovsky

net: mana: Enable debugfs files for MANA device

2024-10-09T12:42:04Z

net: mana: Increase the DEF_RX_BUFFERS_PER_QUEUE to 1024

2024-10-03T09:37:24Z

Through some experiments, we found out that increasing the default RX buffers count from 512 to 1024, gives slightly better throughput and significantly reduces the no_wqe_rx errs on the receiver side. Along with these, other parameters like cpu usage, retrans seg etc also show some improvement with 1024 value. Following are some snippets from the experiments ntttcp tests with 512 Rx buffers --------------------------------------- connections| throughput| no_wqe errs| --------------------------------------- 1 | 40.93Gbps | 123,211 | 16 | 180.15Gbps | 190,120 | 128 | 180.20Gbps | 173,508 | 256 | 180.27Gbps | 189,884 | ntttcp tests with 1024 Rx buffers --------------------------------------- connections| throughput| no_wqe errs| --------------------------------------- 1 | 44.22Gbps | 19,864 | 16 | 180.19Gbps | 4,430 | 128 | 180.21Gbps | 2,560 | 256 | 180.29Gbps | 1,529 | So, increasing the default RX buffers per queue count to 1024 Signed-off-by: Shradha Gupta Reviewed-by: Haiyang Zhang Reviewed-by: Pavan Chebbi Link: https://patch.msgid.link/1727667875-29908-1-git-send-email-shradhagupta@linux.microsoft.com Signed-off-by: Paolo Abeni

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2024-09-06T03:37:20Z

Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/phy/phy_device.c 2560db6ede1a ("net: phy: Fix missing of_node_put() for leds") 1dce520abd46 ("net: phy: Use for_each_available_child_of_node_scoped()") https://lore.kernel.org/20240904115823.74333648@canb.auug.org.au Adjacent changes: drivers/net/ethernet/xilinx/xilinx_axienet.h drivers/net/ethernet/xilinx/xilinx_axienet_main.c 858430db28a5 ("net: xilinx: axienet: Fix race in axienet_stop") 76abb5d675c4 ("net: xilinx: axienet: Add statistics support") Signed-off-by: Jakub Kicinski

net: mana: Improve mana_set_channels() in low mem conditions

2024-09-04T23:28:51Z

The mana_set_channels() function requires detaching the mana driver and reattaching it with changed channel values. During this operation if the system is low on memory, the reattach might fail, causing the network device being down. To avoid this we pre-allocate buffers at the beginning of set operation, to prevent complete network loss Signed-off-by: Shradha Gupta Reviewed-by: Gerhard Engleder Reviewed-by: Haiyang Zhang Link: https://patch.msgid.link/1725248734-21760-1-git-send-email-shradhagupta@linux.microsoft.com Signed-off-by: Jakub Kicinski