1. 18 11月, 2015 2 次提交
    • V
      vlan: Fix untag operations of stacked vlans with REORDER_HEADER off · a6e18ff1
      Vlad Yasevich 提交于
      When we have multiple stacked vlan devices all of which have
      turned off REORDER_HEADER flag, the untag operation does not
      locate the ethernet addresses correctly for nested vlans.
      The reason is that in case of REORDER_HEADER flag being off,
      the outer vlan headers are put back and the mac_len is adjusted
      to account for the presense of the header.  Then, the subsequent
      untag operation, for the next level vlan, always use VLAN_ETH_HLEN
      to locate the begining of the ethernet header and that ends up
      being a multiple of 4 bytes short of the actuall beginning
      of the mac header (the multiple depending on the how many vlan
      encapsulations ethere are).
      
      As a reslult, if there are multiple levles of vlan devices
      with REODER_HEADER being off, the recevied packets end up
      being dropped.
      
      To solve this, we use skb->mac_len as the offset.  The value
      is always set on receive path and starts out as a ETH_HLEN.
      The value is also updated when the vlan header manupations occur
      so we know it will be correct.
      Signed-off-by: NVladislav Yasevich <vyasevic@redhat.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      a6e18ff1
    • T
      via-velocity: unconditionally drop frames with bad l2 length · 6c606fa3
      Timo Teräs 提交于
      By default the driver allowed incorrect frames to be received. What is
      worse the code does not handle very short frames correctly. The FCS
      length is unconditionally subtracted, and the underflow can cause
      skb_put to be called with large number after implicit cast to unsigned.
      And indeed, an skb_over_panic() was observed with via-velocity.
      
      This removes the module parameter as it does not work in it's
      current state, and should be implemented via NETIF_F_RXALL if needed.
      Suggested-by: NFrancois Romieu <romieu@fr.zoreil.com>
      Signed-off-by: NTimo Teräs <timo.teras@iki.fi>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6c606fa3
  2. 17 11月, 2015 28 次提交
  3. 16 11月, 2015 10 次提交