1. 20 Jun, 2017 25 commits
  2. 19 Jun, 2017 9 commits
  3. 18 Jun, 2017 6 commits
    • Florian Fainelli's avatar
      net: dsa: Fix legacy probing · 06d4d450
      Florian Fainelli authored
      After commit 6d3c8c0d ("net: dsa: Remove master_netdev and
      use dst->cpu_dp->netdev") and a29342e7 ("net: dsa: Associate
      slave network device with CPU port") we would be seeing NULL pointer
      dereferences when accessing dst->cpu_dp->netdev too early. In the legacy
      code, we actually know early in advance the master network device, so
      pass it down to the relevant functions.
      
      Fixes: 6d3c8c0d ("net: dsa: Remove master_netdev and use dst->cpu_dp->netdev")
      Fixes: a29342e7 ("net: dsa: Associate slave network device with CPU port")
      Reported-by: default avatarJason Cobham <jcobham@questertangent.com>
      Tested-by: default avatarJason Cobham <jcobham@questertangent.com>
      Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
      Reviewed-by: default avatarVivien Didelot <vivien.didelot@savoirfairelinux.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      06d4d450
    • Dave Watson's avatar
      tls: update Kconfig · d807ec65
      Dave Watson authored
      Missing crypto deps for some platforms.
      Default to n for new module.
      
      config: m68k-amcore_defconfig (attached as .config)
      compiler: m68k-linux-gcc (GCC) 4.9.0
      
      make.cross ARCH=m68k
      All errors (new ones prefixed by >>):
      
         net/built-in.o: In function `tls_set_sw_offload':
      >> (.text+0x732f8): undefined reference to `crypto_alloc_aead'
         net/built-in.o: In function `tls_set_sw_offload':
      >> (.text+0x7333c): undefined reference to `crypto_aead_setkey'
         net/built-in.o: In function `tls_set_sw_offload':
      >> (.text+0x73354): undefined reference to `crypto_aead_setauthsize'
      Reported-by: default avatarkbuild test robot <fengguang.wu@intel.com>
      Signed-off-by: default avatarDave Watson <davejwatson@fb.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d807ec65
    • David S. Miller's avatar
      Merge branch 'net-remove-dst-garbage-collector-logic' · ffe95ecf
      David S. Miller authored
      Wei Wang says:
      
      ====================
      remove dst garbage collector logic
      
      The current mechanism of dst release is a bit complicated. It is because
      the users of dst get divided into 2 situations:
        1. Most users take the reference count when using a dst and release the
           reference count when done.
        2. Exceptional users like IPv4/IPv6/decnet/xfrm routing code do not take
           reference count when referencing to a dst due to some histotic reasons.
      
      Due to those exceptional use cases in 2, reference count being 0 is not an
      adequate evidence to indicate that no user is using this dst. So users in 1
      can't free the dst simply based on reference count being 0 because users in
      2 might still hold reference to it.
      Instead, a dst garbage list is needed to hold the dst entries that already
      get removed by the users in 2 but are still held by users in 1. And a periodic
      garbage collector task is run to check all the dst entries in the list to see
      if the users in 1 have released the reference to those dst entries.
      If so, the dst is now ready to be freed.
      
      This logic introduces unnecessary complications in the dst code which makes it
      hard to understand and to debug.
      
      In order to get rid of the whole dst garbage collector (gc) and make the dst
      code more unified and simplified, we can make the users in 2 also take reference
      count on the dst and release it properly when done.
      This way, dst can be safely freed once the refcount drops to 0 and no gc
      thread is needed anymore.
      
      This patch series' target is to completely get rid of dst gc logic and free
      dst based on reference count only.
      Patch 1-3 are preparation patches to do some cleanup/improvement on the existing
      code to make later work easier.
      Patch 4-21 are real implementations.
      In these patches, a temporary flag DST_NOGC is used to help transition
      those exceptional users one by one. Once every component is transitioned,
      this temporary flag is removed.
      By the end of this patch series, all dst are refcounted when being used
      and released when done. And dst will be freed when its refcount drops to 0.
      No dst gc task is running anymore.
      
      Note: This patch series depends on the decnet fix that was sent right before:
            "decnet: always not take dst->__refcnt when inserting dst into hash table"
      
      v2:
        add curly braces in udp_v4/6_early_demux() in patch 02
        add EXPORT_SYMBOL() for dst_dev_put() in patch 05
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ffe95ecf
    • Wei Wang's avatar
      net: add debug atomic_inc_not_zero() in dst_hold() · 44ebe791
      Wei Wang authored
      This patch is meant to add a debug warning on the situation where dst is
      being held during its destroy phase. This could potentially cause double
      free issue on the dst.
      Signed-off-by: default avatarWei Wang <weiwan@google.com>
      Acked-by: default avatarMartin KaFai Lau <kafai@fb.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      44ebe791
    • Wei Wang's avatar
      net: reorder all the dst flags · 1eb04e7c
      Wei Wang authored
      As some dst flags are removed, reorder the dst flags to fill in the
      blanks.
      Note: these flags are not exposed into user space. So it is safe to
      reorder.
      Signed-off-by: default avatarWei Wang <weiwan@google.com>
      Acked-by: default avatarMartin KaFai Lau <kafai@fb.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1eb04e7c
    • Wei Wang's avatar
      net: remove DST_NOCACHE flag · a4c2fd7f
      Wei Wang authored
      DST_NOCACHE flag check has been removed from dst_release() and
      dst_hold_safe() in a previous patch because all the dst are now ref
      counted properly and can be released based on refcnt only.
      Looking at the rest of the DST_NOCACHE use, all of them can now be
      removed or replaced with other checks.
      So this patch gets rid of all the DST_NOCACHE usage and remove this flag
      completely.
      Signed-off-by: default avatarWei Wang <weiwan@google.com>
      Acked-by: default avatarMartin KaFai Lau <kafai@fb.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a4c2fd7f