1. 12 Jul, 2009 6 commits
    • Sridhar Samudrala's avatar
      udpv4: Handle large incoming UDP/IPv4 packets and support software UFO. · d7ca4cc0
      Sridhar Samudrala authored
      - validate and forward GSO UDP/IPv4 packets from untrusted sources.
      - do software UFO if the outgoing device doesn't support UFO.
      Signed-off-by: default avatarSridhar Samudrala <sri@us.ibm.com>
      Acked-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d7ca4cc0
    • Johannes Berg's avatar
      net: move and export get_net_ns_by_pid · 30ffee84
      Johannes Berg authored
      The function get_net_ns_by_pid(), to get a network
      namespace from a pid_t, will be required in cfg80211
      as well. Therefore, let's move it to net_namespace.c
      and export it. We can't make it a static inline in
      the !NETNS case because it needs to verify that the
      given pid even exists (and return -ESRCH).
      Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      30ffee84
    • Johannes Berg's avatar
      genetlink: make netns aware · 134e6375
      Johannes Berg authored
      This makes generic netlink network namespace aware. No
      generic netlink families except for the controller family
      are made namespace aware, they need to be checked one by
      one and then set the family->netnsok member to true.
      
      A new function genlmsg_multicast_netns() is introduced to
      allow sending a multicast message in a given namespace,
      for example when it applies to an object that lives in
      that namespace, a new function genlmsg_multicast_allns()
      to send a message to all network namespaces (for objects
      that do not have an associated netns).
      
      The function genlmsg_multicast() is changed to multicast
      the message in just init_net, which is currently correct
      for all generic netlink families since they only work in
      init_net right now. Some will later want to work in all
      net namespaces because they do not care about the netns
      at all -- those will have to be converted to use one of
      the new functions genlmsg_multicast_allns() or
      genlmsg_multicast_netns() whenever they are made netns
      aware in some way.
      
      After this patch families can easily decide whether or
      not they should be available in all net namespaces. Many
      genl families us it for objects not related to networking
      and should therefore be available in all namespaces, but
      that will have to be done on a per family basis.
      
      Note that this doesn't touch on the checkpoint/restart
      problem where network namespaces could be used, genl
      families and multicast groups are numbered globally and
      I see no easy way of changing that, especially since it
      must be possible to multicast to all network namespaces
      for those families that do not care about netns.
      Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      134e6375
    • Johannes Berg's avatar
      net: make namespace iteration possible under RCU · 11a28d37
      Johannes Berg authored
      All we need to take care of is using proper RCU list
      add/del primitives and inserting a synchronize_rcu()
      at one place to make sure the exit notifiers are run
      after everybody has stopped iterating the list.
      Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      11a28d37
    • Johannes Berg's avatar
      netlink: use call_rcu for netlink_change_ngroups · 6c04bb18
      Johannes Berg authored
      For the network namespace work in generic netlink I need
      to be able to call this function under rcu_read_lock(),
      otherwise the locking becomes a nightmare and more locks
      would be needed. Instead, just embed a struct rcu_head
      (actually a struct listeners_rcu_head that also carries
      the pointer to the memory block) into the listeners
      memory so we can use call_rcu() instead of synchronising
      and then freeing. No rcu_barrier() is needed since this
      code cannot be modular.
      Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6c04bb18
    • Johannes Berg's avatar
      netlink: remove unused exports · 487420df
      Johannes Berg authored
      I added those myself in commits b4ff4f04 and 84659eb5,
      but I see no reason now why they should be exported,
      only generic netlink uses them which cannot be modular.
      Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      487420df
  2. 10 Jul, 2009 34 commits