Eric Lee / smarc-fsl-linux-kernel

20 Aug, 2010

1 commit

  • eb4d40654   net/sched: add ACT_CSUM action to update packets checksums ... Browse Code »

    net/sched: add ACT_CSUM action to update packets checksums

    ACT_CSUM can be called just after ACT_PEDIT in order to re-compute some
    altered checksums in IPv4 and IPv6 packets. The following checksums are
    supported by this patch:
    - IPv4: IPv4 header, ICMP, IGMP, TCP, UDP & UDPLite
    - IPv6: ICMPv6, TCP, UDP & UDPLite
    It's possible to request in the same action to update different kind of
    checksums, if the packets flow mix TCP, UDP and UDPLite, ...

    An example of usage is done in the associated iproute2 patch.

    Version 3 changes:
    - remove useless goto instructions
    - improve IPv6 hop options decoding

    Version 2 changes:
    - coding style correction
    - remove useless arguments of some functions
    - use stack in tcf_csum_dump()
    - add tcf_csum_skb_nextlayer() to factor code

    Signed-off-by: Gregoire Baron
    Acked-by: jamal
    Signed-off-by: David S. Miller

    Grégoire Baron
     

25 Jul, 2010

1 commit

  • 3b87956ea   net sched: fix race in mirred device removal ... Browse Code »

    This fixes hang when target device of mirred packet classifier
    action is removed.

    If a mirror or redirection action is configured to cause packets
    to go to another device, the classifier holds a ref count, but was assuming
    the adminstrator cleaned up all redirections before removing. The fix
    is to add a notifier and cleanup during unregister.

    The new list is implicitly protected by RTNL mutex because
    it is held during filter add/delete as well as notifier.

    Signed-off-by: Stephen Hemminger
    Acked-by: Jamal Hadi Salim
    Signed-off-by: David S. Miller

    stephen hemminger
     

23 Oct, 2009

1 commit

13 Sep, 2008

1 commit

11 Oct, 2007

1 commit

  • b42199523   [PKT_SCHED]: Add stateless NAT ... Browse Code »

    Stateless NAT is useful in controlled environments where restrictions are
    placed on through traffic such that we don't need connection tracking to
    correctly NAT protocol-specific data.

    In particular, this is of interest when the number of flows or the number
    of addresses being NATed is large, or if connection tracking information
    has to be replicated and where it is not practical to do so.

    Previously we had stateless NAT functionality which was integrated into
    the IPv4 routing subsystem. This was a great solution as long as the NAT
    worked on a subnet to subnet basis such that the number of NAT rules was
    relatively small. The reason is that for SNAT the routing based system
    had to perform a linear scan through the rules.

    If the number of rules is large then major renovations would have take
    place in the routing subsystem to make this practical.

    For the time being, the least intrusive way of achieving this is to use
    the u32 classifier written by Alexey Kuznetsov along with the actions
    infrastructure implemented by Jamal Hadi Salim.

    The following patch is an attempt at this problem by creating a new nat
    action that can be invoked from u32 hash tables which would allow large
    number of stateless NAT rules that can be used/updated in constant time.

    The actual NAT code is mostly based on the previous stateless NAT code
    written by Alexey. In future we might be able to utilise the protocol
    NAT code from netfilter to improve support for other protocols.

    Signed-off-by: Herbert Xu
    Signed-off-by: David S. Miller

    Herbert Xu
     

23 Sep, 2006

1 commit

  • e9ce1cd3c   [PKT_SCHED]: Kill pkt_act.h inlining. ... Browse Code »

    This was simply making templates of functions and mostly causing a lot
    of code duplication in the classifier action modules.

    We solve this more cleanly by having a common "struct tcf_common" that
    hash worker functions contained once in act_api.c can work with.

    Callers work with real action objects that have the common struct
    plus their module specific struct members. You go from a common
    object to the higher level one using a "to_foo()" macro which makes
    use of container_of() to do the dirty work.

    This also kills off act_generic.h which was only used by act_simple.c
    and keeping it around was more work than the it's value.

    Signed-off-by: David S. Miller

    David S. Miller
     

23 Mar, 2006

1 commit

25 Apr, 2005

1 commit

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds