Eric Lee / smarc-fsl-linux-kernel

02 Jul, 2011

1 commit

  • 06f8fe11b   decnet: Reduce switch/case indent ... Browse Code »

    Make the case labels the same indent as the switch.

    git diff -w shows differences for line wrapping.
    (fit multiple lines to 80 columns, join where possible)

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

    Joe Perches
     

13 Mar, 2011

2 commits

14 Dec, 2010

1 commit

  • 0dbaee3b3   net: Abstract default ADVMSS behind an accessor. ... Browse Code »

    Make all RTAX_ADVMSS metric accesses go through a new helper function,
    dst_metric_advmss().

    Leave the actual default metric as "zero" in the real metric slot,
    and compute the actual default value dynamically via a new dst_ops
    AF specific callback.

    For stacked IPSEC routes, we use the advmss of the path which
    preserves existing behavior.

    Unlike ipv4/ipv6, DecNET ties the advmss to the mtu and thus updates
    advmss on pmtu updates. This inconsistency in advmss handling
    results in more raw metric accesses than I wish we ended up with.

    Signed-off-by: David S. Miller

    David S. Miller
     

09 Dec, 2010

1 commit

29 Nov, 2010

1 commit

15 Nov, 2010

1 commit

11 Nov, 2010

1 commit

  • 8d987e5c7   net: avoid limits overflow ... Browse Code »

    Robin Holt tried to boot a 16TB machine and found some limits were
    reached : sysctl_tcp_mem[2], sysctl_udp_mem[2]

    We can switch infrastructure to use long "instead" of "int", now
    atomic_long_t primitives are available for free.

    Signed-off-by: Eric Dumazet
    Reported-by: Robin Holt
    Reviewed-by: Robin Holt
    Signed-off-by: Andrew Morton
    Signed-off-by: David S. Miller

    Eric Dumazet
     

09 Nov, 2010

1 commit

  • fc766e4c4   decnet: RCU conversion and get rid of dev_base_lock ... Browse Code »

    While tracking dev_base_lock users, I found decnet used it in
    dnet_select_source(), but for a wrong purpose:

    Writers only hold RTNL, not dev_base_lock, so readers must use RCU if
    they cannot use RTNL.

    Adds an rcu_head in struct dn_ifaddr and handle proper RCU management.

    Adds __rcu annotation in dn_route as well.

    Signed-off-by: Eric Dumazet
    Acked-by: Steven Whitehouse
    Signed-off-by: David S. Miller

    Eric Dumazet
     

21 Apr, 2010

1 commit

  • aa3951451   net: sk_sleep() helper ... Browse Code »

    Define a new function to return the waitqueue of a "struct sock".

    static inline wait_queue_head_t *sk_sleep(struct sock *sk)
    {
    return sk->sk_sleep;
    }

    Change all read occurrences of sk_sleep by a call to this function.

    Needed for a future RCU conversion. sk_sleep wont be a field directly
    available.

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

    Eric Dumazet
     

13 Apr, 2010

1 commit

  • b6c6712a4   net: sk_dst_cache RCUification ... Browse Code »

    With latest CONFIG_PROVE_RCU stuff, I felt more comfortable to make this
    work.

    sk->sk_dst_cache is currently protected by a rwlock (sk_dst_lock)

    This rwlock is readlocked for a very small amount of time, and dst
    entries are already freed after RCU grace period. This calls for RCU
    again :)

    This patch converts sk_dst_lock to a spinlock, and use RCU for readers.

    __sk_dst_get() is supposed to be called with rcu_read_lock() or if
    socket locked by user, so use appropriate rcu_dereference_check()
    condition (rcu_read_lock_held() || sock_owned_by_user(sk))

    This patch avoids two atomic ops per tx packet on UDP connected sockets,
    for example, and permits sk_dst_lock to be much less dirtied.

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

    Eric Dumazet
     

26 Nov, 2009

1 commit

  • 09ad9bc75   net: use net_eq to compare nets ... Browse Code »

    Generated with the following semantic patch

    @@
    struct net *n1;
    struct net *n2;
    @@
    - n1 == n2
    + net_eq(n1, n2)

    @@
    struct net *n1;
    struct net *n2;
    @@
    - n1 != n2
    + !net_eq(n1, n2)

    applied over {include,net,drivers/net}.

    Signed-off-by: Octavian Purdila
    Signed-off-by: David S. Miller

    Octavian Purdila
     

06 Nov, 2009

1 commit

  • 3f378b684   net: pass kern to net_proto_family create function ... Browse Code »

    The generic __sock_create function has a kern argument which allows the
    security system to make decisions based on if a socket is being created by
    the kernel or by userspace. This patch passes that flag to the
    net_proto_family specific create function, so it can do the same thing.

    Signed-off-by: Eric Paris
    Acked-by: Arnaldo Carvalho de Melo
    Signed-off-by: David S. Miller

    Eric Paris
     

04 Nov, 2009

1 commit

  • c6d14c845   net: Introduce for_each_netdev_rcu() iterator ... Browse Code »

    Adds RCU management to the list of netdevices.

    Convert some for_each_netdev() users to RCU version, if
    it can avoid read_lock-ing dev_base_lock

    Ie:
    read_lock(&dev_base_loack);
    for_each_netdev(net, dev)
    some_action();
    read_unlock(&dev_base_lock);

    becomes :

    rcu_read_lock();
    for_each_netdev_rcu(net, dev)
    some_action();
    rcu_read_unlock();

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

    Eric Dumazet
     

21 Oct, 2009

1 commit

  • ea94ff3b5   net: Fix for dst_negative_advice ... Browse Code »

    dst_negative_advice() should check for changed dst and reset
    sk_tx_queue_mapping accordingly. Pass sock to the callers of
    dst_negative_advice.

    (sk_reset_txq is defined just for use by dst_negative_advice. The
    only way I could find to get around this is to move dst_negative_()
    from dst.h to dst.c, include sock.h in dst.c, etc)

    Signed-off-by: Krishna Kumar
    Signed-off-by: David S. Miller

    Krishna Kumar
     

07 Oct, 2009

1 commit

01 Oct, 2009

1 commit

  • b7058842c   net: Make setsockopt() optlen be unsigned. ... Browse Code »

    This provides safety against negative optlen at the type
    level instead of depending upon (sometimes non-trivial)
    checks against this sprinkled all over the the place, in
    each and every implementation.

    Based upon work done by Arjan van de Ven and feedback
    from Linus Torvalds.

    Signed-off-by: David S. Miller

    David S. Miller
     

27 Jun, 2009

1 commit

  • 10e854480   decnet: Use rcu_barrier() on module unload. ... Browse Code »

    The decnet module unloading as been disabled with a '#if 0' statement,
    because it have had issues.

    We add a rcu_barrier() anyhow for correctness.

    The maintainer (Chrissie Caulfield) will look into the unload issue
    when time permits.

    Acked-by: Paul E. McKenney
    Acked-by: Chrissie Caulfield
    Signed-off-by: Jesper Dangaard Brouer
    Signed-off-by: David S. Miller

    Jesper Dangaard Brouer
     

18 Jun, 2009

1 commit

  • 31e6d363a   net: correct off-by-one write allocations reports ... Browse Code »

    commit 2b85a34e911bf483c27cfdd124aeb1605145dc80
    (net: No more expensive sock_hold()/sock_put() on each tx)
    changed initial sk_wmem_alloc value.

    We need to take into account this offset when reporting
    sk_wmem_alloc to user, in PROC_FS files or various
    ioctls (SIOCOUTQ/TIOCOUTQ)

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

    Eric Dumazet
     

03 Jun, 2009

1 commit

  • adf30907d   net: skb->dst accessors ... Browse Code »

    Define three accessors to get/set dst attached to a skb

    struct dst_entry *skb_dst(const struct sk_buff *skb)

    void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)

    void skb_dst_drop(struct sk_buff *skb)
    This one should replace occurrences of :
    dst_release(skb->dst)
    skb->dst = NULL;

    Delete skb->dst field

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

    Eric Dumazet
     

29 May, 2009

1 commit

10 Mar, 2009

1 commit

27 Feb, 2009

2 commits

  • e57c624be   decnet: fix sparse warnings: symbol shadows an earlier one ... Browse Code »

    Impact: Remove redundant variable declarations, resp. rename
    inner scope variable.

    Fix this sparse warnings:
    net/decnet/af_decnet.c:1252:40: warning: symbol 'skb' shadows an earlier one
    net/decnet/af_decnet.c:1223:24: originally declared here
    net/decnet/af_decnet.c:1582:29: warning: symbol 'val' shadows an earlier one
    net/decnet/af_decnet.c:1527:22: originally declared here
    net/decnet/dn_dev.c:687:21: warning: symbol 'err' shadows an earlier one
    net/decnet/dn_dev.c:670:13: originally declared here
    net/decnet/sysctl_net_decnet.c:182:21: warning: symbol 'len' shadows an earlier one
    net/decnet/sysctl_net_decnet.c:173:16: originally declared here

    Signed-off-by: Hannes Eder
    Signed-off-by: David S. Miller

    Hannes Eder
     
  • db849df63   decnet: remove some pointless conditionals before kfree_skb() ... Browse Code »

    Remove some pointless conditionals before kfree_skb().

    Signed-off-by: Wei Yongjun
    Signed-off-by: David S. Miller

    Wei Yongjun
     

01 Feb, 2009

1 commit

27 Nov, 2008

1 commit

20 Jul, 2008

1 commit

17 Jul, 2008

1 commit

  • 5c52ba170   sock: add net to prot->enter_memory_pressure callback ... Browse Code »

    The tcp_enter_memory_pressure calls NET_INC_STATS, but doesn't
    have where to get the net from.

    I decided to add a sk argument, not the net itself, only to factor
    all the required sock_net(sk) calls inside the enter_memory_pressure
    callback itself.

    Signed-off-by: Pavel Emelyanov
    Signed-off-by: David S. Miller

    Pavel Emelyanov
     

17 Jun, 2008

1 commit

26 Mar, 2008

2 commits

01 Mar, 2008

1 commit

29 Jan, 2008

1 commit

01 Nov, 2007

1 commit

  • 6257ff217   [NET]: Forget the zero_it argument of sk_alloc() ... Browse Code »

    Finally, the zero_it argument can be completely removed from
    the callers and from the function prototype.

    Besides, fix the checkpatch.pl warnings about using the
    assignments inside if-s.

    This patch is rather big, and it is a part of the previous one.
    I splitted it wishing to make the patches more readable. Hope
    this particular split helped.

    Signed-off-by: Pavel Emelyanov
    Signed-off-by: David S. Miller

    Pavel Emelyanov
     

11 Oct, 2007

4 commits

  • 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
     
  • e9dc86534   [NET]: Make device event notification network namespace safe ... Browse Code »

    Every user of the network device notifiers is either a protocol
    stack or a pseudo device. If a protocol stack that does not have
    support for multiple network namespaces receives an event for a
    device that is not in the initial network namespace it quite possibly
    can get confused and do the wrong thing.

    To avoid problems until all of the protocol stacks are converted
    this patch modifies all netdev event handlers to ignore events on
    devices that are not in the initial network namespace.

    As the rest of the code is made network namespace aware these
    checks can be removed.

    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