1. 18 Aug, 2017 5 commits
  2. 16 Aug, 2017 20 commits
    • David S. Miller's avatar
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 510c8a89
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix TCP checksum offload handling in iwlwifi driver, from Emmanuel
          Grumbach.
      
       2) In ksz DSA tagging code, free SKB if skb_put_padto() fails. From
          Vivien Didelot.
      
       3) Fix two regressions with bonding on wireless, from Andreas Born.
      
       4) Fix build when busypoll is disabled, from Daniel Borkmann.
      
       5) Fix copy_linear_skb() wrt. SO_PEEK_OFF, from Eric Dumazet.
      
       6) Set SKB cached route properly in inet_rtm_getroute(), from Florian
          Westphal.
      
       7) Fix PCI-E relaxed ordering handling in cxgb4 driver, from Ding
          Tianhong.
      
       8) Fix module refcnt leak in ULP code, from Sabrina Dubroca.
      
       9) Fix use of GFP_KERNEL in atomic contexts in AF_KEY code, from Eric
          Dumazet.
      
      10) Need to purge socket write queue in dccp_destroy_sock(), also from
          Eric Dumazet.
      
      11) Make bpf_trace_printk() work properly on 32-bit architectures, from
          Daniel Borkmann.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (47 commits)
        bpf: fix bpf_trace_printk on 32 bit archs
        PCI: fix oops when try to find Root Port for a PCI device
        sfc: don't try and read ef10 data on non-ef10 NIC
        net_sched: remove warning from qdisc_hash_add
        net_sched/sfq: update hierarchical backlog when drop packet
        net_sched: reset pointers to tcf blocks in classful qdiscs' destructors
        ipv4: fix NULL dereference in free_fib_info_rcu()
        net: Fix a typo in comment about sock flags.
        ipv6: fix NULL dereference in ip6_route_dev_notify()
        tcp: fix possible deadlock in TCP stack vs BPF filter
        dccp: purge write queue in dccp_destroy_sock()
        udp: fix linear skb reception with PEEK_OFF
        ipv6: release rt6->rt6i_idev properly during ifdown
        af_key: do not use GFP_KERNEL in atomic contexts
        tcp: ulp: avoid module refcnt leak in tcp_set_ulp
        net/cxgb4vf: Use new PCI_DEV_FLAGS_NO_RELAXED_ORDERING flag
        net/cxgb4: Use new PCI_DEV_FLAGS_NO_RELAXED_ORDERING flag
        PCI: Disable Relaxed Ordering Attributes for AMD A1100
        PCI: Disable Relaxed Ordering for some Intel processors
        PCI: Disable PCIe Relaxed Ordering if unsupported
        ...
      510c8a89
    • Daniel Borkmann's avatar
      bpf: fix bpf_trace_printk on 32 bit archs · 88a5c690
      Daniel Borkmann authored
      James reported that on MIPS32 bpf_trace_printk() is currently
      broken while MIPS64 works fine:
      
        bpf_trace_printk() uses conditional operators to attempt to
        pass different types to __trace_printk() depending on the
        format operators. This doesn't work as intended on 32-bit
        architectures where u32 and long are passed differently to
        u64, since the result of C conditional operators follows the
        "usual arithmetic conversions" rules, such that the values
        passed to __trace_printk() will always be u64 [causing issues
        later in the va_list handling for vscnprintf()].
      
        For example the samples/bpf/tracex5 test printed lines like
        below on MIPS32, where the fd and buf have come from the u64
        fd argument, and the size from the buf argument:
      
          [...] 1180.941542: 0x00000001: write(fd=1, buf=  (null), size=6258688)
      
        Instead of this:
      
          [...] 1625.616026: 0x00000001: write(fd=1, buf=009e4000, size=512)
      
      One way to get it working is to expand various combinations
      of argument types into 8 different combinations for 32 bit
      and 64 bit kernels. Fix tested by James on MIPS32 and MIPS64
      as well that it resolves the issue.
      
      Fixes: 9c959c86
      
       ("tracing: Allow BPF programs to call bpf_trace_printk()")
      Reported-by: default avatarJames Hogan <james.hogan@imgtec.com>
      Tested-by: default avatarJames Hogan <james.hogan@imgtec.com>
      Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      88a5c690
    • dingtianhong's avatar
      PCI: fix oops when try to find Root Port for a PCI device · 0e405232
      dingtianhong authored
      Eric report a oops when booting the system after applying
      the commit a99b646a ("PCI: Disable PCIe Relaxed..."):
      
      [    4.241029] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
      [    4.247001] IP: pci_find_pcie_root_port+0x62/0x80
      [    4.253011] PGD 0
      [    4.253011] P4D 0
      [    4.253011]
      [    4.258013] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
      [    4.262015] Modules linked in:
      [    4.265005] CPU: 31 PID: 1 Comm: swapper/0 Not tainted 4.13.0-dbx-DEV #316
      [    4.271002] Hardware name: Intel RML,PCH/Iota_QC_19, BIOS 2.40.0 06/22/2016
      [    4.279002] task: ffffa2ee38cfa040 task.stack: ffffa51ec0004000
      [    4.285001] RIP: 0010:pci_find_pcie_root_port+0x62/0x80
      [    4.290012] RSP: 0000:ffffa51ec0007ab8 EFLAGS: 00010246
      [    4.295003] RAX: 0000000000000000 RBX: ffffa2ee36bae000 RCX: 0000000000000006
      [    4.303002] RDX: 000000000000081c RSI: ffffa2ee38cfa8c8 RDI: ffffa2ee36bae000
      [    4.310013] RBP: ffffa51ec0007b58 R08: 0000000000000001 R09: 0000000000000000
      [    4.317001] R10: 0000000000000000 R11: 0000000000000000 R12: ffffa51ec0007ad0
      [    4.324005] R13: ffffa2ee36bae098 R14: 0000000000000002 R15: ffffa2ee37204818
      [    4.331002] FS:  0000000000000000(0000) GS:ffffa2ee3fcc0000(0000) knlGS:0000000000000000
      [    4.339002] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [    4.345001] CR2: 0000000000000050 CR3: 000000401000f000 CR4: 00000000001406e0
      [    4.351002] Call Trace:
      [    4.354012]  ? pci_configure_device+0x19f/0x570
      [    4.359002]  ? pci_conf1_read+0xb8/0xf0
      [    4.363002]  ? raw_pci_read+0x23/0x40
      [    4.366011]  ? pci_read+0x2c/0x30
      [    4.370014]  ? pci_read_config_word+0x67/0x70
      [    4.374012]  pci_device_add+0x28/0x230
      [    4.378012]  ? pci_vpd_f0_read+0x50/0x80
      [    4.382014]  pci_scan_single_device+0x96/0xc0
      [    4.386012]  pci_scan_slot+0x79/0xf0
      [    4.389001]  pci_scan_child_bus+0x31/0x180
      [    4.394014]  acpi_pci_root_create+0x1c6/0x240
      [    4.398013]  pci_acpi_scan_root+0x15f/0x1b0
      [    4.402012]  acpi_pci_root_add+0x2e6/0x400
      [    4.406012]  ? acpi_evaluate_integer+0x37/0x60
      [    4.411002]  acpi_bus_attach+0xdf/0x200
      [    4.415002]  acpi_bus_attach+0x6a/0x200
      [    4.418014]  acpi_bus_attach+0x6a/0x200
      [    4.422013]  acpi_bus_scan+0x38/0x70
      [    4.426011]  acpi_scan_init+0x10c/0x271
      [    4.429001]  acpi_init+0x2fa/0x348
      [    4.433004]  ? acpi_sleep_proc_init+0x2d/0x2d
      [    4.437001]  do_one_initcall+0x43/0x169
      [    4.441001]  kernel_init_freeable+0x1d0/0x258
      [    4.445003]  ? rest_init+0xe0/0xe0
      [    4.449001]  kernel_init+0xe/0x150
      
      ====================== cut here =============================
      
      It looks like the pci_find_pcie_root_port() was trying to
      find the Root Port for the PCI device which is the Root
      Port already, it will return NULL and trigger the problem,
      so check the highest_pcie_bridge to fix thie problem.
      
      Fixes: a99b646a ("PCI: Disable PCIe Relaxed Ordering if unsupported")
      Fixes: c56d4450
      
       ("PCI: Turn off Request Attributes to avoid Chelsio T5 Completion erratum")
      Reported-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
      Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
      Signed-off-by: default avatarDing Tianhong <dingtianhong@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0e405232
    • Biju Das's avatar
      dt-bindings: net: ravb : Add support for r8a7745 SoC · 22cb7a3a
      Biju Das authored
      
      
      Add a new compatible string for the RZ/G1E (R8A7745) SoC.
      Signed-off-by: default avatarBiju Das <biju.das@bp.renesas.com>
      Acked-by: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      22cb7a3a
    • David S. Miller's avatar
      Merge branch 'getroute-no-rtnl' · 5d1321a9
      David S. Miller authored
      
      
      Florian Westphal says:
      
      ====================
      ipv4 getroute doesn't assume rtnl lock is held anymore, also make
      this true for ipv6, then switch both to DOIT_UNLOCKED.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5d1321a9
    • Florian Westphal's avatar
    • Florian Westphal's avatar
    • Florian Westphal's avatar
      ipv6: route: make rtm_getroute not assume rtnl is locked · 121622db
      Florian Westphal authored
      
      
      __dev_get_by_index assumes RTNL is held, use _rcu version instead.
      Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      121622db
    • Florian Westphal's avatar
      selftests: add 'ip get' to rtnetlink.sh · 2cc76595
      Florian Westphal authored
      
      
      exercise ip/ip6 RTM_GETROUTE doit() callpath.
      Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2cc76595
    • Bert Kenward's avatar
      sfc: don't try and read ef10 data on non-ef10 NIC · 61deee96
      Bert Kenward authored
      The MAC stats command takes a port ID, which doesn't exist on
      pre-ef10 NICs (5000- and 6000- series). This is extracted from the
      NIC specific data; we misinterpret this as the ef10 data structure,
      causing us to read potentially unallocated data. With a KASAN kernel
      this can cause errors with:
         BUG: KASAN: slab-out-of-bounds in efx_mcdi_mac_stats
      
      Fixes: 0a2ab4d9
      
       ("sfc: set the port-id when calling MC_CMD_MAC_STATS")
      Reported-by: default avatarStefano Brivio <sbrivio@redhat.com>
      Tested-by: default avatarStefano Brivio <sbrivio@redhat.com>
      Signed-off-by: default avatarBert Kenward <bkenward@solarflare.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      61deee96
    • Craig Gallek's avatar
      dsa: fix flow disector null pointer · 7324157b
      Craig Gallek authored
      A recent change to fix up DSA device behavior made the assumption that
      all skbs passing through the flow disector will be associated with a
      device. This does not appear to be a safe assumption.  Syzkaller found
      the crash below by attaching a BPF socket filter that tries to find the
      payload offset of a packet passing between two unix sockets.
      
      kasan: GPF could be caused by NULL-ptr deref or user memory access
      general protection fault: 0000 [#1] SMP KASAN
      Dumping ftrace buffer:
         (ftrace buffer empty)
      Modules linked in:
      CPU: 0 PID: 2940 Comm: syzkaller872007 Not tainted 4.13.0-rc4-next-20170811 #1
      Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
      task: ffff8801d1b425c0 task.stack: ffff8801d0bc0000
      RIP: 0010:__skb_flow_dissect+0xdcd/0x3ae0 net/core/flow_dissector.c:445
      RSP: 0018:ffff8801d0bc7340 EFLAGS: 00010206
      RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
      RDX: 0000000000000060 RSI: ffffffff856dc080 RDI: 0000000000000300
      RBP: ffff8801d0bc7870 R08: 0000000000000000 R09: 0000000000000000
      R10: 0000000000000008 R11: ffffed003a178f1e R12: 0000000000000000
      R13: 0000000000000000 R14: ffffffff856dc080 R15: ffff8801ce223140
      FS:  00000000016ed880(0000) GS:ffff8801dc000000(0000) knlGS:0000000000000000
      CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      CR2: 0000000020008000 CR3: 00000001ce22d000 CR4: 00000000001406f0
      DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
      Call Trace:
       skb_flow_dissect_flow_keys include/linux/skbuff.h:1176 [inline]
       skb_get_poff+0x9a/0x1a0 net/core/flow_dissector.c:1079
       ______skb_get_pay_offset net/core/filter.c:114 [inline]
       __skb_get_pay_offset+0x15/0x20 net/core/filter.c:112
      Code: 80 3c 02 00 44 89 6d 10 0f 85 44 2b 00 00 4d 8b 67 20 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 00 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 13 2b 00 00 4d 8b a4 24 00 03 00 00 4d 85 e4
      RIP: __skb_flow_dissect+0xdcd/0x3ae0 net/core/flow_dissector.c:445 RSP: ffff8801d0bc7340
      
      Fixes: 43e66528
      
       ("net-next: dsa: fix flow dissection")
      Reported-by: default avatarDmitry Vyukov <dvyukov@google.com>
      Signed-off-by: default avatarCraig Gallek <kraig@google.com>
      Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7324157b
    • Konstantin Khlebnikov's avatar
      net_sched: remove warning from qdisc_hash_add · c90e9514
      Konstantin Khlebnikov authored
      It was added in commit e57a784d ("pkt_sched: set root qdisc
      before change() in attach_default_qdiscs()") to hide duplicates
      from "tc qdisc show" for incative deivices.
      
      After 59cc1f61 ("net: sched: convert qdisc linked list to hashtable")
      it triggered when classful qdisc is added to inactive device because
      default qdiscs are added before switching root qdisc.
      
      Anyway after commit ea327469
      
       ("net: sched: avoid duplicates in
      qdisc dump") duplicates are filtered right in dumper.
      Signed-off-by: default avatarKonstantin Khlebnikov <khlebnikov@yandex-team.ru>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c90e9514
    • Konstantin Khlebnikov's avatar
      net_sched/sfq: update hierarchical backlog when drop packet · 325d5dc3
      Konstantin Khlebnikov authored
      When sfq_enqueue() drops head packet or packet from another queue it
      have to update backlog at upper qdiscs too.
      
      Fixes: 2ccccf5f
      
       ("net_sched: update hierarchical backlog too")
      Signed-off-by: default avatarKonstantin Khlebnikov <khlebnikov@yandex-team.ru>
      Acked-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      325d5dc3
    • Konstantin Khlebnikov's avatar
      net_sched: reset pointers to tcf blocks in classful qdiscs' destructors · 89890422
      Konstantin Khlebnikov authored
      Traffic filters could keep direct pointers to classes in classful qdisc,
      thus qdisc destruction first removes all filters before freeing classes.
      Class destruction methods also tries to free attached filters but now
      this isn't safe because tcf_block_put() unlike to tcf_destroy_chain()
      cannot be called second time.
      
      This patch set class->block to NULL after first tcf_block_put() and
      turn second call into no-op.
      
      Fixes: 6529eaba
      
       ("net: sched: introduce tcf block infractructure")
      Signed-off-by: default avatarKonstantin Khlebnikov <khlebnikov@yandex-team.ru>
      Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      89890422
    • Eric Dumazet's avatar
      ipv4: fix NULL dereference in free_fib_info_rcu() · 187e5b3a
      Eric Dumazet authored
      If fi->fib_metrics could not be allocated in fib_create_info()
      we attempt to dereference a NULL pointer in free_fib_info_rcu() :
      
          m = fi->fib_metrics;
          if (m != &dst_default_metrics && atomic_dec_and_test(&m->refcnt))
                  kfree(m);
      
      Before my recent patch, we used to call kfree(NULL) and nothing wrong
      happened.
      
      Instead of using RCU to defer freeing while we are under memory stress,
      it seems better to take immediate action.
      
      This was reported by syzkaller team.
      
      Fixes: 3fb07daf
      
       ("ipv4: add reference counting to metrics")
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Reported-by: default avatarDmitry Vyukov <dvyukov@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      187e5b3a
    • Tonghao Zhang's avatar
    • Eric Dumazet's avatar
      ipv6: fix NULL dereference in ip6_route_dev_notify() · 12d94a80
      Eric Dumazet authored
      
      
      Based on a syzkaller report [1], I found that a per cpu allocation
      failure in snmp6_alloc_dev() would then lead to NULL dereference in
      ip6_route_dev_notify().
      
      It seems this is a very old bug, thus no Fixes tag in this submission.
      
      Let's add in6_dev_put_clear() helper, as we will probably use
      it elsewhere (once available/present in net-next)
      
      [1]
      kasan: CONFIG_KASAN_INLINE enabled
      kasan: GPF could be caused by NULL-ptr deref or user memory access
      general protection fault: 0000 [#1] SMP KASAN
      Dumping ftrace buffer:
         (ftrace buffer empty)
      Modules linked in:
      CPU: 1 PID: 17294 Comm: syz-executor6 Not tainted 4.13.0-rc2+ #10
      Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
      task: ffff88019f456680 task.stack: ffff8801c6e58000
      RIP: 0010:__read_once_size include/linux/compiler.h:250 [inline]
      RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:26 [inline]
      RIP: 0010:refcount_sub_and_test+0x7d/0x1b0 lib/refcount.c:178
      RSP: 0018:ffff8801c6e5f1b0 EFLAGS: 00010202
      RAX: 0000000000000037 RBX: dffffc0000000000 RCX: ffffc90005d25000
      RDX: ffff8801c6e5f218 RSI: ffffffff82342bbf RDI: 0000000000000001
      RBP: ffff8801c6e5f240 R08: 0000000000000001 R09: 0000000000000000
      R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10038dcbe37
      R13: 0000000000000006 R14: 0000000000000001 R15: 00000000000001b8
      FS:  00007f21e0429700(0000) GS:ffff8801dc100000(0000) knlGS:0000000000000000
      CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      CR2: 0000001ddbc22000 CR3: 00000001d632b000 CR4: 00000000001426e0
      DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
      DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
      Call Trace:
       refcount_dec_and_test+0x1a/0x20 lib/refcount.c:211
       in6_dev_put include/net/addrconf.h:335 [inline]
       ip6_route_dev_notify+0x1c9/0x4a0 net/ipv6/route.c:3732
       notifier_call_chain+0x136/0x2c0 kernel/notifier.c:93
       __raw_notifier_call_chain kernel/notifier.c:394 [inline]
       raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401
       call_netdevice_notifiers_info+0x51/0x90 net/core/dev.c:1678
       call_netdevice_notifiers net/core/dev.c:1694 [inline]
       rollback_registered_many+0x91c/0xe80 net/core/dev.c:7107
       rollback_registered+0x1be/0x3c0 net/core/dev.c:7149
       register_netdevice+0xbcd/0xee0 net/core/dev.c:7587
       register_netdev+0x1a/0x30 net/core/dev.c:7669
       loopback_net_init+0x76/0x160 drivers/net/loopback.c:214
       ops_init+0x10a/0x570 net/core/net_namespace.c:118
       setup_net+0x313/0x710 net/core/net_namespace.c:294
       copy_net_ns+0x27c/0x580 net/core/net_namespace.c:418
       create_new_namespaces+0x425/0x880 kernel/nsproxy.c:107
       unshare_nsproxy_namespaces+0xae/0x1e0 kernel/nsproxy.c:206
       SYSC_unshare kernel/fork.c:2347 [inline]
       SyS_unshare+0x653/0xfa0 kernel/fork.c:2297
       entry_SYSCALL_64_fastpath+0x1f/0xbe
      RIP: 0033:0x4512c9
      RSP: 002b:00007f21e0428c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000110
      RAX: ffffffffffffffda RBX: 0000000000718150 RCX: 00000000004512c9
      RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000062020200
      RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000
      R10: 0000000000000000 R11: 0000000000000216 R12: 00000000004b973d
      R13: 00000000ffffffff R14: 000000002001d000 R15: 00000000000002dd
      Code: 50 2b 34 82 c7 00 f1 f1 f1 f1 c7 40 04 04 f2 f2 f2 c7 40 08 f3 f3
      f3 f3 e8 a1 43 39 ff 4c 89 f8 48 8b 95 70 ff ff ff 48 c1 e8 03 <0f> b6
      0c 18 4c 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85
      RIP: __read_once_size include/linux/compiler.h:250 [inline] RSP:
      ffff8801c6e5f1b0
      RIP: atomic_read arch/x86/include/asm/atomic.h:26 [inline] RSP:
      ffff8801c6e5f1b0
      RIP: refcount_sub_and_test+0x7d/0x1b0 lib/refcount.c:178 RSP:
      ffff8801c6e5f1b0
      ---[ end trace e441d046c6410d31 ]---
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Reported-by: default avatarDmitry Vyukov <dvyukov@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      12d94a80
    • Ido Schimmel's avatar
      mlxsw: spectrum_router: Use correct config option · df9a21f1
      Ido Schimmel authored
      I made an embarrassing mistake and used 'IPV6' instead of 'CONFIG_IPV6'
      around the function that updates the kernel about IPv6 neighbours
      activity. This can be a problem if the kernel has more neighbours than a
      certain threshold and it starts deleting those that are supposedly
      inactive.
      
      Fixes: b5f3e0d4
      
       ("mlxsw: spectrum_router: Fix build when IPv6 isn't enabled")
      Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      df9a21f1
    • Ido Schimmel's avatar
      ipv6: fib: Provide offload indication using nexthop flags · fe400799
      Ido Schimmel authored
      
      
      IPv6 routes currently lack nexthop flags as in IPv4. This has several
      implications.
      
      In the forwarding path, it requires us to check the carrier state of the
      nexthop device and potentially ignore a linkdown route, instead of
      checking for RTNH_F_LINKDOWN.
      
      It also requires capable drivers to use the user facing IPv6-specific
      route flags to provide offload indication, instead of using the nexthop
      flags as in IPv4.
      
      Add nexthop flags to IPv6 routes in the 40 bytes hole and use it to
      provide offload indication instead of the RTF_OFFLOAD flag, which is
      removed while it's still not part of any official kernel release.
      
      In the near future we would like to use the field for the
      RTNH_F_{LINKDOWN,DEAD} flags, but this change is more involved and might
      not be ready in time for the current cycle.
      Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
      Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
      Acked-by: default avatarDavid Ahern <dsahern@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fe400799
  3. 15 Aug, 2017 15 commits