Eric Lee / smarc-fsl-linux-kernel

11 Oct, 2007

5 commits

  • 0795af572   [NET]: Introduce and use print_mac() and DECLARE_MAC_BUF() ... Browse Code »

    This is nicer than the MAC_FMT stuff.

    Signed-off-by: Joe Perches
    Signed-off-by: David S. Miller

    Joe Perches
     
  • 881d966b4   [NET]: Make the device list and device lookups per namespace. ... Browse Code »

    This patch makes most of the generic device layer network
    namespace safe. This patch makes dev_base_head a
    network namespace variable, and then it picks up
    a few associated variables. The functions:
    dev_getbyhwaddr
    dev_getfirsthwbytype
    dev_get_by_flags
    dev_get_by_name
    __dev_get_by_name
    dev_get_by_index
    __dev_get_by_index
    dev_ioctl
    dev_ethtool
    dev_load
    wireless_process_ioctl

    were modified to take a network namespace argument, and
    deal with it.

    vlan_ioctl_set and brioctl_set were modified so their
    hooks will receive a network namespace argument.

    So basically anthing in the core of the network stack that was
    affected to by the change of dev_base was modified to handle
    multiple network namespaces. The rest of the network stack was
    simply modified to explicitly use &init_net the initial network
    namespace. This can be fixed when those components of the network
    stack are modified to handle multiple network namespaces.

    For now the ifindex generator is left global.

    Fundametally ifindex numbers are per namespace, or else
    we will have corner case problems with migration when
    we get that far.

    At the same time there are assumptions in the network stack
    that the ifindex of a network device won't change. Making
    the ifindex number global seems a good compromise until
    the network stack can cope with ifindex changes when
    you change namespaces, and the like.

    Signed-off-by: Eric W. Biederman
    Signed-off-by: David S. Miller

    Eric W. Biederman
     
  • e730c1551   [NET]: Make packet reception network namespace safe ... Browse Code »

    This patch modifies every packet receive function
    registered with dev_add_pack() to drop packets if they
    are not from the initial network namespace.

    This should ensure that the various network stacks do
    not receive packets in a anything but the initial network
    namespace until the code has been converted and is ready
    for them.

    Signed-off-by: Eric W. Biederman
    Signed-off-by: David S. Miller

    Eric W. Biederman
     
  • 1b8d7ae42   [NET]: Make socket creation namespace safe. ... Browse Code »

    This patch passes in the namespace a new socket should be created in
    and has the socket code do the appropriate reference counting. By
    virtue of this all socket create methods are touched. In addition
    the socket create methods are modified so that they will fail if
    you attempt to create a socket in a non-default network namespace.

    Failing if we attempt to create a socket outside of the default
    network namespace ensures that as we incrementally make the network stack
    network namespace aware we will not export functionality that someone
    has not audited and made certain is network namespace safe.
    Allowing us to partially enable network namespaces before all of the
    exotic protocols are supported.

    Any protocol layers I have missed will fail to compile because I now
    pass an extra parameter into the socket creation code.

    [ Integrated AF_IUCV build fixes from Andrew Morton... -DaveM ]

    Signed-off-by: Eric W. Biederman
    Signed-off-by: David S. Miller

    Eric W. Biederman
     
  • 457c4cbc5   [NET]: Make /proc/net per network namespace ... Browse Code »

    This patch makes /proc/net per network namespace. It modifies the global
    variables proc_net and proc_net_stat to be per network namespace.
    The proc_net file helpers are modified to take a network namespace argument,
    and all of their callers are fixed to pass &init_net for that argument.
    This ensures that all of the /proc/net files are only visible and
    usable in the initial network namespace until the code behind them
    has been updated to be handle multiple network namespaces.

    Making /proc/net per namespace is necessary as at least some files
    in /proc/net depend upon the set of network devices which is per
    network namespace, and even more files in /proc/net have contents
    that are relevant to a single network namespace.

    Signed-off-by: Eric W. Biederman
    Signed-off-by: David S. Miller

    Eric W. Biederman
     

11 Jul, 2007

1 commit

09 May, 2007

1 commit

04 May, 2007

1 commit

  • 7562f876c   [NET]: Rework dev_base via list_head (v3) ... Browse Code »

    Cleanup of dev_base list use, with the aim to simplify making device
    list per-namespace. In almost every occasion, use of dev_base variable
    and dev->next pointer could be easily replaced by for_each_netdev
    loop. A few most complicated places were converted to using
    first_netdev()/next_netdev().

    Signed-off-by: Pavel Emelianov
    Acked-by: Kirill Korotaev
    Signed-off-by: David S. Miller

    Pavel Emelianov
     

26 Apr, 2007

6 commits

15 Feb, 2007

2 commits

  • 0b4d41471   [PATCH] sysctl: remove insert_at_head from register_sysctl ... Browse Code »

    The semantic effect of insert_at_head is that it would allow new registered
    sysctl entries to override existing sysctl entries of the same name. Which is
    pain for caching and the proc interface never implemented.

    I have done an audit and discovered that none of the current users of
    register_sysctl care as (excpet for directories) they do not register
    duplicate sysctl entries.

    So this patch simply removes the support for overriding existing entries in
    the sys_sysctl interface since no one uses it or cares and it makes future
    enhancments harder.

    Signed-off-by: Eric W. Biederman
    Acked-by: Ralf Baechle
    Acked-by: Martin Schwidefsky
    Cc: Russell King
    Cc: David Howells
    Cc: "Luck, Tony"
    Cc: Ralf Baechle
    Cc: Paul Mackerras
    Cc: Martin Schwidefsky
    Cc: Andi Kleen
    Cc: Jens Axboe
    Cc: Corey Minyard
    Cc: Neil Brown
    Cc: "John W. Linville"
    Cc: James Bottomley
    Cc: Jan Kara
    Cc: Trond Myklebust
    Cc: Mark Fasheh
    Cc: David Chinner
    Cc: "David S. Miller"
    Cc: Patrick McHardy
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Eric W. Biederman
     
  • 9fa7b46d7   [PATCH] sysctl: llc: remove unnecessary insert_at_head flag ... Browse Code »

    The sysctl numbers used are unique so setting the insert_at_head flag serves
    no semantis purpose, and is just confusing.

    Signed-off-by: Eric W. Biederman
    Cc: Arnaldo Carvalho de Melo
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Eric W. Biederman
     

13 Feb, 2007

1 commit

  • da7071d7e   [PATCH] mark struct file_operations const 8 ... Browse Code »

    Many struct file_operations in the kernel can be "const". Marking them const
    moves these to the .rodata section, which avoids false sharing with potential
    dirty data. In addition it'll catch accidental writes at compile time to
    these shared resources.

    Signed-off-by: Arjan van de Ven
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arjan van de Ven
     

11 Feb, 2007

1 commit

03 Dec, 2006

1 commit

14 Aug, 2006

1 commit

  • 7ee66fcb9   [LLC]: multicast receive device match ... Browse Code »

    Fix from Aji_Srinivas@emc.com, STP packets are incorrectly received on
    all LLC datagram sockets, whichever interface they are bound to. The
    llc_sap datagram receive logic sends packets with a unicast
    destination MAC to one socket bound to that SAP and MAC, and multicast
    packets to all sockets bound to that SAP. STP packets are multicast,
    and we do need to know on which interface they were received.

    Signed-off-by: Stephen Hemminger
    Signed-off-by: David S. Miller

    Stephen Hemminger
     

05 Aug, 2006

1 commit

  • 30a584d94   [LLX]: SOCK_DGRAM interface fixes ... Browse Code »

    The datagram interface of LLC is broken in a couple of ways.
    These were discovered when trying to use it to build an out-of-kernel
    version of STP.

    First it didn't pass the source address of the received packet
    in recvfrom(). It needs to copy the source address of received LLC packets
    into the socket control block. At the same time fix a security issue
    because there was uninitialized data leakage. Every recvfrom call
    was just copying out old data.

    Second, LLC should not merge multiple packets in one receive call
    on datagram sockets. LLC should preserve packet boundaries on
    SOCK_DGRAM.

    This fix goes against the old historical comments about UNIX98 semantics
    but without this fix SOCK_DGRAM is broken and useless. So either ANK's
    interpretation was incorect or UNIX98 standard was wrong.

    Signed-off-by: Stephen Hemminger
    Acked-by: Arnaldo Carvalho de Melo
    Signed-off-by: David S. Miller

    Stephen Hemminger
     

22 Jul, 2006

1 commit

01 Jul, 2006

1 commit

18 Jun, 2006

7 commits

20 Apr, 2006

1 commit

21 Mar, 2006

4 commits

04 Jan, 2006

3 commits

  • b5e5fa5e0   [NET]: Add a dev_ioctl() fallback to sock_ioctl() ... Browse Code »

    Currently all network protocols need to call dev_ioctl as the default
    fallback in their ioctl implementations. This patch adds a fallback
    to dev_ioctl to sock_ioctl if the protocol returned -ENOIOCTLCMD.
    This way all the procotol ioctl handlers can be simplified and we don't
    need to export dev_ioctl.

    Signed-off-by: Christoph Hellwig
    Signed-off-by: David S. Miller

    Christoph Hellwig
     
  • 90ddc4f04   [NET]: move struct proto_ops to const ... Browse Code »

    I noticed that some of 'struct proto_ops' used in the kernel may share
    a cache line used by locks or other heavily modified data. (default
    linker alignement is 32 bytes, and L1_CACHE_LINE is 64 or 128 at
    least)

    This patch makes sure a 'struct proto_ops' can be declared as const,
    so that all cpus can share all parts of it without false sharing.

    This is not mandatory : a driver can still use a read/write structure
    if it needs to (and eventually a __read_mostly)

    I made a global stubstitute to change all existing occurences to make
    them const.

    This should reduce the possibility of false sharing on SMP, and
    speedup some socket system calls.

    Signed-off-by: Eric Dumazet
    Signed-off-by: David S. Miller

    Eric Dumazet
     
  • c1cbe4b7a   [NET]: Avoid atomic xchg() for non-error case ... Browse Code »

    It also looks like there were 2 places where the test on sk_err was
    missing from the event wait logic (in sk_stream_wait_connect and
    sk_stream_wait_memory), while the rest of the sock_error() users look
    to be doing the right thing. This version of the patch fixes those,
    and cleans up a few places that were testing ->sk_err directly.

    Signed-off-by: Benjamin LaHaise
    Signed-off-by: David S. Miller

    Benjamin LaHaise
     

18 Nov, 2005

1 commit

  • 381998241   [LLC]: Fix compiler warnings introduced by TX window scaling changes. ... Browse Code »

    Noticed by Olaf Hering.

    The comparisons want a u8 here (the data type on the left-hand branch
    is a u8 structure member, and the constant on the right-hand branch is
    "~((u8) 128)"), but C turns it into an integer so we get:

    net/llc/llc_c_ac.c: In function `llc_conn_ac_inc_npta_value':
    net/llc/llc_c_ac.c:998: warning: comparison is always true due to limited range of data type
    net/llc/llc_c_ac.c:999: warning: large integer implicitly truncated to unsigned type

    Fix this up by explicitly recasting the right-hand branch constant
    into a "u8" once more.

    Signed-off-by: David S. Miller

    David S. Miller
     

15 Nov, 2005

1 commit