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Date:      Thu, 16 Feb 2017 08:35:41 +0000
From:      "Eggert, Lars" <lars@netapp.com>
To:        "freebsd-net@FreeBSD.org" <freebsd-net@FreeBSD.org>
Cc:        Giuseppe Lettieri <g.lettieri@iet.unipi.it>
Subject:   netmap error on -CURRENT with em and igb
Message-ID:  <8F640402-8F0B-407D-AB72-743A9AB50CA3@netapp.com>

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Hi,

I can't put em or igb interfaces into netmap mode on a recent -CURRENT =
(ix interfaces work on the same machines). Here are the pkt-gen and =
dmesg outputs:

#=EE=82=B0 sudo sysctl dev.netmap.admode=3D1
#=EE=82=B0 sudo sysctl dev.netmap.verbose=3D1

# sudo ./pkt-gen -i em1
790.411737 main [2274] interface is em1
790.411753 main [2397] running on 1 cpus (have 20)
790.411823 extract_ip_range [369] range is 10.0.0.1:0 to 10.0.0.1:0
790.411828 extract_ip_range [369] range is 10.1.0.1:0 to 10.1.0.1:0
790.625117 nm_open [898] NIOCREGIF failed: Operation not permitted em1
790.625126 main [2479] Unable to open netmap:em1: Operation not =
permitted
790.625129 main [2560] aborting

dmesg:
790.411868 [1776] netmap_interp_ringid      em1: tx [0,2) rx [0,2) id 0
790.419431 [ 551] nm_mem_assign_group       iommu_group 0
790.425548 [1148] netmap_config_obj_allocator objsize 1024 clustsize =
4096 objects 4
790.434368 [1148] netmap_config_obj_allocator objsize 36864 clustsize =
36864 objects 1
790.443390 [1148] netmap_config_obj_allocator objsize 2048 clustsize =
4096 objects 2
790.452219 [1270] netmap_finalize_obj_allocator Pre-allocated 25 =
clusters (4/100KB) for 'netmap_if'
790.463605 [1270] netmap_finalize_obj_allocator Pre-allocated 200 =
clusters (36/7200KB) for 'netmap_ring'
790.534919 [1270] netmap_finalize_obj_allocator Pre-allocated 81920 =
clusters (4/327680KB) for 'netmap_buf'
790.546113 [1377] netmap_mem_finalize_all   interfaces 100 KB, rings =
7200 KB, buffers 320 MB
790.555873 [1380] netmap_mem_finalize_all   Free buffers: 163838
790.605325 [1831] netmap_mem_global_deref   active =3D 0
790.612967 [ 949] netmap_close              dev 0xfffff8000a4d7c00 fflag =
0x20003 devtype 8192 td 0xfffff8000b899000

# sudo ./pkt-gen -i igb1
094.077695 main [2274] interface is igb1
094.077711 main [2397] running on 1 cpus (have 10)
094.077822 extract_ip_range [369] range is 10.0.0.1:0 to 10.0.0.1:0
094.077827 extract_ip_range [369] range is 10.1.0.1:0 to 10.1.0.1:0
094.280311 nm_open [898] NIOCREGIF failed: Operation not permitted igb1
094.280319 main [2479] Unable to open netmap:igb1: Operation not =
permitted
094.280323 main [2560] aborting

dmesg:
094.077866 [1776] netmap_interp_ringid      igb1: tx [0,8) rx [0,8) id 0
094.085425 [ 551] nm_mem_assign_group       iommu_group 0
094.091449 [1148] netmap_config_obj_allocator objsize 1024 clustsize =
4096 objects 4
094.100125 [1148] netmap_config_obj_allocator objsize 36864 clustsize =
36864 objects 1
094.109004 [1148] netmap_config_obj_allocator objsize 2048 clustsize =
4096 objects 2
094.117705 [1270] netmap_finalize_obj_allocator Pre-allocated 25 =
clusters (4/100KB) for 'netmap_if'
094.128918 [1270] netmap_finalize_obj_allocator Pre-allocated 200 =
clusters (36/7200KB) for 'netmap_ring'
094.199456 [1270] netmap_finalize_obj_allocator Pre-allocated 81920 =
clusters (4/327680KB) for 'netmap_buf'
094.210482 [1377] netmap_mem_finalize_all   interfaces 100 KB, rings =
7200 KB, buffers 320 MB
094.220078 [1380] netmap_mem_finalize_all   Free buffers: 163838
094.260201 [1831] netmap_mem_global_deref   active =3D 0
094.268364 [ 949] netmap_close              dev 0xfffff8000a453000 fflag =
0x20003 devtype 8192 td 0xfffff80014d45000

Lars

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