github.com/rigado/snapd@v2.42.5-go-mod+incompatible/interfaces/builtin/broadcom_asic_control.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2017 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package builtin
    21  
    22  const broadcomAsicControlSummary = `allows using the broadcom-asic kernel module`
    23  
    24  const broadcomAsicControlBaseDeclarationSlots = `
    25    broadcom-asic-control:
    26      allow-installation:
    27        slot-snap-type:
    28          - core
    29      deny-auto-connection: true
    30  `
    31  
    32  const broadcomAsicControlConnectedPlugAppArmor = `
    33  # Description: Allow access to broadcom asic kernel module.
    34  
    35  /sys/module/linux_bcm_knet/{,**} r,
    36  /sys/module/linux_kernel_bde/{,**} r,
    37  /sys/module/linux_user_bde/{,**} r,
    38  /dev/linux-user-bde rw,
    39  /dev/linux-kernel-bde rw,
    40  /dev/linux-bcm-knet rw,
    41  
    42  # These are broader than they needs to be, but until we query udev
    43  # for specific devices, use a broader glob
    44  /sys/devices/pci[0-9a-f]*/**/config r,
    45  /sys/devices/pci[0-9a-f]*/**/{,subsystem_}device r,
    46  /sys/devices/pci[0-9a-f]*/**/{,subsystem_}vendor r,
    47  
    48  /sys/bus/pci/devices/ r,
    49  /run/udev/data/+pci:[0-9a-f]* r,
    50  `
    51  
    52  var broadcomAsicControlConnectedPlugUDev = []string{
    53  	`SUBSYSTEM=="pci", DRIVER=="linux-kernel-bde"`,
    54  	`SUBSYSTEM=="net", KERNEL=="bcm[0-9]*"`,
    55  }
    56  
    57  // The upstream linux kernel doesn't come with support for the
    58  // necessary kernel modules we need to drive a Broadcom ASIC.
    59  // All necessary modules need to be loaded on demand if the
    60  // kernel the device runs with provides them.
    61  var broadcomAsicControlConnectedPlugKMod = []string{
    62  	"linux-user-bde",
    63  	"linux-kernel-bde",
    64  	"linux-bcm-knet",
    65  }
    66  
    67  func init() {
    68  	registerIface(&commonInterface{
    69  		name:                     "broadcom-asic-control",
    70  		summary:                  broadcomAsicControlSummary,
    71  		implicitOnCore:           true,
    72  		implicitOnClassic:        true,
    73  		reservedForOS:            true,
    74  		baseDeclarationSlots:     broadcomAsicControlBaseDeclarationSlots,
    75  		connectedPlugAppArmor:    broadcomAsicControlConnectedPlugAppArmor,
    76  		connectedPlugKModModules: broadcomAsicControlConnectedPlugKMod,
    77  		connectedPlugUDev:        broadcomAsicControlConnectedPlugUDev,
    78  	})
    79  }