1. 05 Sep, 2021 2 commits
    • Antonio Quartulli's avatar
      ip/ip6_gre: use the same logic as SIT interfaces when computing v6LL address · e5dd7294
      Antonio Quartulli authored
      GRE interfaces are not Ether-like and therefore it is not
      possible to generate the v6LL address the same way as (for example)
      GRETAP devices.
      
      With default settings, a GRE interface will attempt generating its v6LL
      address using the EUI64 approach, but this will fail when the local
      endpoint of the GRE tunnel is set to "any". In this case the GRE
      interface will end up with no v6LL address, thus violating RFC4291.
      
      SIT interfaces already implement a different logic to ensure that a v6LL
      address is always computed.
      
      Change the GRE v6LL generation logic to follow the same approach as SIT.
      This way GRE interfaces will always have a v6LL address as well.
      
      Behaviour of GRETAP interfaces has not been changed as they behave like
      classic Ether-like interfaces.
      
      To avoid code duplication sit_add_v4_addrs() has been renamed to
      add_v4_addrs() and adapted to handle also the IP6GRE/GRE cases.
      Signed-off-by: default avatarAntonio Quartulli <a@unstable.cc>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e5dd7294
    • Song Yoong Siang's avatar
      net: stmmac: Fix overall budget calculation for rxtx_napi · 81d0885d
      Song Yoong Siang authored
      tx_done is not used for napi_complete_done(). Thus, NAPI busy polling
      mechanism by gro_flush_timeout and napi_defer_hard_irqs will not able
      be triggered after a packet is transmitted when there is no receive
      packet.
      
      Fix this by taking the maximum value between tx_done and rx_done as
      overall budget completed by the rxtx NAPI poll to ensure XDP Tx ZC
      operation is continuously polling for next Tx frame. This gives
      benefit of lower packet submission processing latency and jitter
      under XDP Tx ZC mode.
      
      Performance of tx-only using xdp-sock on Intel ADL-S platform is
      the same with and without this patch.
      
      root@intel-corei7-64:~# ./xdpsock -i enp0s30f4 -t -z -q 1 -n 10
       sock0@enp0s30f4:1 txonly xdp-drv
                         pps            pkts           10.00
      rx                 0              0
      tx                 511630         8659520
      
       sock0@enp0s30f4:1 txonly xdp-drv
                         pps            pkts           10.00
      rx                 0              0
      tx                 511625         13775808
      
       sock0@enp0s30f4:1 txonly xdp-drv
                         pps            pkts           10.00
      rx                 0              0
      tx                 511619         18892032
      
      Fixes: 132c32ee ("net: stmmac: Add TX via XDP zero-copy socket")
      Cc: <stable@vger.kernel.org> # 5.13.x
      Co-developed-by: default avatarOng Boon Leong <boon.leong.ong@intel.com>
      Signed-off-by: default avatarOng Boon Leong <boon.leong.ong@intel.com>
      Signed-off-by: default avatarSong Yoong Siang <yoong.siang.song@intel.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      81d0885d
  2. 04 Sep, 2021 5 commits
  3. 03 Sep, 2021 15 commits
  4. 02 Sep, 2021 12 commits
    • Rafał Miłecki's avatar
      net: dsa: b53: Set correct number of ports in the DSA struct · d12e1c46
      Rafał Miłecki authored
      Setting DSA_MAX_PORTS caused DSA to call b53 callbacks (e.g.
      b53_disable_port() during dsa_register_switch()) for invalid
      (non-existent) ports. That made b53 modify unrelated registers and is
      one of reasons for a broken BCM5301x support.
      
      This problem exists for years but DSA_MAX_PORTS usage has changed few
      times. It seems the most accurate to reference commit dropping
      dsa_switch_alloc() in the Fixes tag.
      
      Fixes: 7e99e347 ("net: dsa: remove dsa_switch_alloc helper")
      Signed-off-by: default avatarRafał Miłecki <rafal@milecki.pl>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d12e1c46
    • Rafał Miłecki's avatar
      net: dsa: b53: Fix calculating number of switch ports · cdb067d3
      Rafał Miłecki authored
      It isn't true that CPU port is always the last one. Switches BCM5301x
      have 9 ports (port 6 being inactive) and they use port 5 as CPU by
      default (depending on design some other may be CPU ports too).
      
      A more reliable way of determining number of ports is to check for the
      last set bit in the "enabled_ports" bitfield.
      
      This fixes b53 internal state, it will allow providing accurate info to
      the DSA and is required to fix BCM5301x support.
      
      Fixes: 967dd82f ("net: dsa: b53: Add support for Broadcom RoboSwitch")
      Signed-off-by: default avatarRafał Miłecki <rafal@milecki.pl>
      Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cdb067d3
    • Daniele Palmas's avatar
      net: usb: cdc_mbim: avoid altsetting toggling for Telit LN920 · aabbdc67
      Daniele Palmas authored
      Add quirk CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE for Telit LN920
      0x1061 composition in order to avoid bind error.
      Signed-off-by: default avatarDaniele Palmas <dnlplm@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      aabbdc67
    • Ziyang Xuan's avatar
      net: hso: add failure handler for add_net_device · ecdc28de
      Ziyang Xuan authored
      If the network devices connected to the system beyond
      HSO_MAX_NET_DEVICES. add_net_device() in hso_create_net_device()
      will be failed for the network_table is full. It will lead to
      business failure which rely on network_table, for example,
      hso_suspend() and hso_resume(). It will also lead to memory leak
      because resource release process can not search the hso_device
      object from network_table in hso_free_interface().
      
      Add failure handler for add_net_device() in hso_create_net_device()
      to solve the above problems.
      
      Fixes: 72dc1c09 ("HSO: add option hso driver")
      Signed-off-by: default avatarZiyang Xuan <william.xuanziyang@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ecdc28de
    • Tetsuo Handa's avatar
      flow: fix object-size-mismatch warning in flowi{4,6}_to_flowi_common() · b9edbfe1
      Tetsuo Handa authored
      Commit 3df98d79 ("lsm,selinux: pass flowi_common instead of flowi
      to the LSM hooks") introduced flowi{4,6}_to_flowi_common() functions which
      cause UBSAN warning when building with LLVM 11.0.1 on Ubuntu 21.04.
      
       ================================================================================
       UBSAN: object-size-mismatch in ./include/net/flow.h:197:33
       member access within address ffffc9000109fbd8 with insufficient space
       for an object of type 'struct flowi'
       CPU: 2 PID: 7410 Comm: systemd-resolve Not tainted 5.14.0 #51
       Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 02/27/2020
       Call Trace:
        dump_stack_lvl+0x103/0x171
        ubsan_type_mismatch_common+0x1de/0x390
        __ubsan_handle_type_mismatch_v1+0x41/0x50
        udp_sendmsg+0xda2/0x1300
        ? ip_skb_dst_mtu+0x1f0/0x1f0
        ? sock_rps_record_flow+0xe/0x200
        ? inet_send_prepare+0x2d/0x90
        sock_sendmsg+0x49/0x80
        ____sys_sendmsg+0x269/0x370
        __sys_sendmsg+0x15e/0x1d0
        ? syscall_enter_from_user_mode+0xf0/0x1b0
        do_syscall_64+0x3d/0xb0
        entry_SYSCALL_64_after_hwframe+0x44/0xae
       RIP: 0033:0x7f7081a50497
       Code: 0c 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
       RSP: 002b:00007ffc153870f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
       RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007f7081a50497
       RDX: 0000000000000000 RSI: 00007ffc15387140 RDI: 000000000000000c
       RBP: 00007ffc15387140 R08: 0000563f29a5e4fc R09: 000000000000cd28
       R10: 0000563f29a68a30 R11: 0000000000000246 R12: 000000000000000c
       R13: 0000000000000001 R14: 0000563f29a68a30 R15: 0000563f29a5e50c
       ================================================================================
      
      I don't think we need to call flowi{4,6}_to_flowi() from these functions
      because the first member of "struct flowi4" and "struct flowi6" is
      
        struct flowi_common __fl_common;
      
      while the first member of "struct flowi" is
      
        union {
          struct flowi_common __fl_common;
          struct flowi4       ip4;
          struct flowi6       ip6;
          struct flowidn      dn;
        } u;
      
      which should point to the same address without access to "struct flowi".
      Signed-off-by: default avatarTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b9edbfe1
    • Ryoga Saito's avatar
      Set fc_nlinfo in nh_create_ipv4, nh_create_ipv6 · 9aca491e
      Ryoga Saito authored
      This patch fixes kernel NULL pointer dereference when creating nexthop
      which is bound with SRv6 decapsulation. In the creation of nexthop,
      __seg6_end_dt_vrf_build is called. __seg6_end_dt_vrf_build expects
      fc_lninfo in fib6_config is set correctly, but it isn't set in
      nh_create_ipv6, which causes kernel crash.
      
      Here is steps to reproduce kernel crash:
      
      1. modprobe vrf
      2. ip -6 nexthop add encap seg6local action End.DT4 vrftable 1 dev eth0
      
      We got the following message:
      
      [  901.370336] BUG: kernel NULL pointer dereference, address: 0000000000000ba0
      [  901.371658] #PF: supervisor read access in kernel mode
      [  901.372672] #PF: error_code(0x0000) - not-present page
      [  901.373672] PGD 0 P4D 0
      [  901.374248] Oops: 0000 [#1] SMP PTI
      [  901.374944] CPU: 0 PID: 8593 Comm: ip Not tainted 5.14-051400-generic #202108310811-Ubuntu
      [  901.376404] Hardware name: Red Hat KVM, BIOS 1.11.1-4.module_el8.2.0+320+13f867d7 04/01/2014
      [  901.377907] RIP: 0010:vrf_ifindex_lookup_by_table_id+0x19/0x90 [vrf]
      [  901.379182] Code: c1 e9 72 ff ff ff e8 96 49 01 c2 66 0f 1f 44 00 00 0f 1f 44 00 00 55 48 89 e5 41 56 41 55 41 89 f5 41 54 53 8b 05 47 4c 00 00 <48> 8b 97 a0 0b 00 00 48 8b 1c c2 e8 57 27 53 c1 4c 8d a3 88 00 00
      [  901.382652] RSP: 0018:ffffbf2d02043590 EFLAGS: 00010282
      [  901.383746] RAX: 000000000000000b RBX: ffff990808255e70 RCX: ffffbf2d02043aa8
      [  901.385436] RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000000
      [  901.386924] RBP: ffffbf2d020435b0 R08: 00000000000000c0 R09: ffff990808255e40
      [  901.388537] R10: ffffffff83b08c90 R11: 0000000000000009 R12: 0000000000000000
      [  901.389937] R13: 0000000000000001 R14: 0000000000000000 R15: 000000000000000b
      [  901.391226] FS:  00007fe49381f740(0000) GS:ffff99087dc00000(0000) knlGS:0000000000000000
      [  901.392737] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [  901.393803] CR2: 0000000000000ba0 CR3: 000000000e3e8003 CR4: 0000000000770ef0
      [  901.395122] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      [  901.396496] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
      [  901.397833] PKRU: 55555554
      [  901.398578] Call Trace:
      [  901.399144]  l3mdev_ifindex_lookup_by_table_id+0x3b/0x70
      [  901.400179]  __seg6_end_dt_vrf_build+0x34/0xd0
      [  901.401067]  seg6_end_dt4_build+0x16/0x20
      [  901.401904]  seg6_local_build_state+0x271/0x430
      [  901.402797]  lwtunnel_build_state+0x81/0x130
      [  901.403645]  fib_nh_common_init+0x82/0x100
      [  901.404465]  ? sock_def_readable+0x4b/0x80
      [  901.405285]  fib6_nh_init+0x115/0x7c0
      [  901.406033]  nh_create_ipv6.isra.0+0xe1/0x140
      [  901.406932]  rtm_new_nexthop+0x3b7/0xeb0
      [  901.407828]  rtnetlink_rcv_msg+0x152/0x3a0
      [  901.408663]  ? rtnl_calcit.isra.0+0x130/0x130
      [  901.409535]  netlink_rcv_skb+0x55/0x100
      [  901.410319]  rtnetlink_rcv+0x15/0x20
      [  901.411026]  netlink_unicast+0x1a8/0x250
      [  901.411813]  netlink_sendmsg+0x238/0x470
      [  901.412602]  ? _copy_from_user+0x2b/0x60
      [  901.413394]  sock_sendmsg+0x65/0x70
      [  901.414112]  ____sys_sendmsg+0x218/0x290
      [  901.414929]  ? copy_msghdr_from_user+0x5c/0x90
      [  901.415814]  ___sys_sendmsg+0x81/0xc0
      [  901.416559]  ? fsnotify_destroy_marks+0x27/0xf0
      [  901.417447]  ? call_rcu+0xa4/0x230
      [  901.418153]  ? kmem_cache_free+0x23f/0x410
      [  901.418972]  ? dentry_free+0x37/0x70
      [  901.419705]  ? mntput_no_expire+0x4c/0x260
      [  901.420574]  __sys_sendmsg+0x62/0xb0
      [  901.421297]  __x64_sys_sendmsg+0x1f/0x30
      [  901.422057]  do_syscall_64+0x5c/0xc0
      [  901.422756]  ? syscall_exit_to_user_mode+0x27/0x50
      [  901.423675]  ? __x64_sys_close+0x12/0x40
      [  901.424462]  ? do_syscall_64+0x69/0xc0
      [  901.425219]  ? irqentry_exit_to_user_mode+0x9/0x20
      [  901.426149]  ? irqentry_exit+0x19/0x30
      [  901.426901]  ? exc_page_fault+0x89/0x160
      [  901.427709]  ? asm_exc_page_fault+0x8/0x30
      [  901.428536]  entry_SYSCALL_64_after_hwframe+0x44/0xae
      [  901.429514] RIP: 0033:0x7fe493945747
      [  901.430248] Code: 64 89 02 48 c7 c0 ff ff ff ff eb bb 0f 1f 80 00 00 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
      [  901.433549] RSP: 002b:00007ffe9932cf68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
      [  901.434981] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe493945747
      [  901.436303] RDX: 0000000000000000 RSI: 00007ffe9932cfe0 RDI: 0000000000000003
      [  901.437607] RBP: 00000000613053f7 R08: 0000000000000001 R09: 00007ffe9932d07c
      [  901.438990] R10: 000055f4a903a010 R11: 0000000000000246 R12: 0000000000000001
      [  901.440340] R13: 0000000000000001 R14: 000055f4a802b163 R15: 000055f4a8042020
      [  901.441630] Modules linked in: vrf nls_utf8 isofs nls_iso8859_1 dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua intel_rapl_msr intel_rapl_common isst_if_mbox_msr isst_if_common nfit rapl input_leds joydev serio_raw qemu_fw_cfg mac_hid sch_fq_codel drm virtio_rng ip_tables x_tables autofs4 btrfs blake2b_generic zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd virtio_net net_failover cryptd psmouse virtio_blk failover i2c_piix4 pata_acpi floppy
      [  901.450808] CR2: 0000000000000ba0
      [  901.451514] ---[ end trace c27b934b99ade304 ]---
      [  901.452403] RIP: 0010:vrf_ifindex_lookup_by_table_id+0x19/0x90 [vrf]
      [  901.453626] Code: c1 e9 72 ff ff ff e8 96 49 01 c2 66 0f 1f 44 00 00 0f 1f 44 00 00 55 48 89 e5 41 56 41 55 41 89 f5 41 54 53 8b 05 47 4c 00 00 <48> 8b 97 a0 0b 00 00 48 8b 1c c2 e8 57 27 53 c1 4c 8d a3 88 00 00
      [  901.456910] RSP: 0018:ffffbf2d02043590 EFLAGS: 00010282
      [  901.457912] RAX: 000000000000000b RBX: ffff990808255e70 RCX: ffffbf2d02043aa8
      [  901.459238] RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000000
      [  901.460552] RBP: ffffbf2d020435b0 R08: 00000000000000c0 R09: ffff990808255e40
      [  901.461882] R10: ffffffff83b08c90 R11: 0000000000000009 R12: 0000000000000000
      [  901.463208] R13: 0000000000000001 R14: 0000000000000000 R15: 000000000000000b
      [  901.464529] FS:  00007fe49381f740(0000) GS:ffff99087dc00000(0000) knlGS:0000000000000000
      [  901.466058] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [  901.467189] CR2: 0000000000000ba0 CR3: 000000000e3e8003 CR4: 0000000000770ef0
      [  901.468515] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      [  901.469858] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
      [  901.471139] PKRU: 55555554
      Signed-off-by: default avatarRyoga Saito <contact@proelbtn.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9aca491e
    • Dan Carpenter's avatar
      net: qrtr: revert check in qrtr_endpoint_post() · d2cabd2d
      Dan Carpenter authored
      I tried to make this check stricter as a hardenning measure but it broke
      audo and wifi on these devices so revert it.
      
      Fixes: aaa8e492 ("net: qrtr: make checks in qrtr_endpoint_post() stricter")
      Reported-by: default avatarJohn Stultz <john.stultz@linaro.org>
      Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
      Tested-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d2cabd2d
    • Jan Hoffmann's avatar
      net: dsa: lantiq_gswip: fix maximum frame length · 552799f8
      Jan Hoffmann authored
      Currently, outgoing packets larger than 1496 bytes are dropped when
      tagged VLAN is used on a switch port.
      
      Add the frame check sequence length to the value of the register
      GSWIP_MAC_FLEN to fix this. This matches the lantiq_ppa vendor driver,
      which uses a value consisting of 1518 bytes for the MAC frame, plus the
      lengths of special tag and VLAN tags.
      
      Fixes: 14fceff4 ("net: dsa: Add Lantiq / Intel DSA driver for vrx200")
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarJan Hoffmann <jan@3e8.eu>
      Acked-by: default avatarHauke Mehrtens <hauke@hauke-m.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      552799f8
    • Jakub Kicinski's avatar
      selftests: add simple GSO GRE test · 025efa0a
      Jakub Kicinski authored
      Test case for commit a6e3f298 ("ip6_tunnel: fix GRE6 segmentation").
      Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      025efa0a
    • Jiwon Kim's avatar
      ipv6: change return type from int to void for mld_process_v2 · 3f22bb13
      Jiwon Kim authored
      The mld_process_v2 only returned 0.
      
      So, the return type is changed to void.
      Signed-off-by: default avatarJiwon Kim <jiwonaid0@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      3f22bb13
    • Geert Uytterhoeven's avatar
      net/sun3_82586: Fix return value of sun3_82586_probe() · 66abf5fb
      Geert Uytterhoeven authored
      drivers/net/ethernet/i825xx/sun3_82586.c: In function ‘sun3_82586_probe’:
      drivers/net/ethernet/i825xx/sun3_82586.c:317:9: warning: returning ‘struct net_device *’ from a function with return type ‘int’ makes integer from pointer without a cast [-Wint-conversion]
        317 |  return dev;
            |         ^~~
      
      The return type of sun3_82586_probe() was changed, but one return value
      was forgotten to be updated.
      
      Fixes: e179d78e ("m68k: remove legacy probing")
      Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      66abf5fb
    • Ivan Mikhaylov's avatar
      net/ncsi: add get MAC address command to get Intel i210 MAC address · 205b95fe
      Ivan Mikhaylov authored
      This patch adds OEM Intel GMA command and response handler for it.
      Signed-off-by: default avatarBrad Ho <Brad_Ho@phoenix.com>
      Signed-off-by: default avatarPaul Fertser <fercerpav@gmail.com>
      Signed-off-by: default avatarIvan Mikhaylov <i.mikhaylov@yadro.com>
      Link: https://lore.kernel.org/r/20210830171806.119857-2-i.mikhaylov@yadro.comSigned-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      205b95fe
  5. 01 Sep, 2021 6 commits