01 Nov, 2007
1 commit
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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
11 Oct, 2007
5 commits
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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_ioctlwere 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 -
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 -
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 -
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 -
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
11 Jul, 2007
1 commit
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Make all initialized struct seq_operations in net/ const
Signed-off-by: Philippe De Muyter
Signed-off-by: David S. Miller
09 May, 2007
1 commit
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Remove includes of where it is not used/needed.
Suggested by Al Viro.Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Apr, 2007
7 commits
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Signed-off-by: Arnaldo Carvalho de Melo
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To clearly state the intent of copying to linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.Signed-off-by: Arnaldo Carvalho de Melo
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To clearly state the intent of copying from linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.Signed-off-by: Arnaldo Carvalho de Melo
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This is similar to the skb_reset_network_header(), i.e. at the point we reset
the transport header pointer/offset skb->tail is equal to skb->data.Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: David S. Miller -
For the common, open coded 'skb->h.raw = skb->data' operation, so that we can
later turn skb->h.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.This one touches just the most simple cases:
skb->h.raw = skb->data;
skb->h.raw = {skb_push|[__]skb_pull}()The next ones will handle the slightly more "complex" cases.
Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: David S. Miller -
For the common, open coded 'skb->nh.raw = skb->data' operation, so that we can
later turn skb->nh.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.This one touches just the most simple case, next will handle the slightly more
"complex" cases.Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: David S. Miller -
Now network timestamps use ktime_t infrastructure, we can add a new
ioctl() SIOCGSTAMPNS command to get timestamps in 'struct timespec'.
User programs can thus access to nanosecond resolution.Signed-off-by: Eric Dumazet
CC: Stephen Hemminger
Signed-off-by: David S. Miller
20 Mar, 2007
1 commit
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This patch fixes two NULL dereferences spotted by the Coverity checker.
Signed-off-by: Adrian Bunk
Signed-off-by: David S. Miller
15 Feb, 2007
2 commits
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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 -
There has not been much maintenance on sysctl in years, and as a result is
there is a lot to do to allow future interesting work to happen, and being
ambitious I'm trying to do it all at once :)The patches in this series fall into several general categories.
- Removal of useless attempts to override the standard sysctls
- Registers of sysctl numbers in sysctl.h so someone else does not use
the magic number and conflict.- C99 conversions so it becomes possible to change the layout of
struct ctl_table without breaking everything.- Removal of useless claims of module ownership, in the proc dir entries
- Removal of sys_sysctl support where people had used conflicting sysctl
numbers. Trying to break glibc or other applications by changing the
ABI is not cool. 9 instances of this in the kernel seems a little
extreme.- General enhancements when I got the junk I could see out.
This patch:
Since x25 uses unique binary numbers inserting yourself at the head of the
search list for sysctls so you can override already registered sysctls is
pointless.Signed-off-by: Eric W. Biederman
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
13 Feb, 2007
1 commit
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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
11 Feb, 2007
1 commit
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Signed-off-by: YOSHIFUJI Hideaki
Signed-off-by: David S. Miller
09 Feb, 2007
3 commits
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View the active forwarded calls
cat /proc/net/x25/forwardSigned-off-by: Andrew Hendry
Signed-off-by: David S. Miller -
echo "1" > /proc/sys/net/x25/x25_forward
To turn on x25_forwarding, defaults to off
Requires the previous patch.Signed-off-by: Andrew Hendry
Signed-off-by: David S. Miller -
Adds call forwarding to X.25, allowing it to operate like an X.25 router.
Useful if one needs to manipulate X.25 traffic with tools like tc.
This is an update/cleanup based off a patch submitted by Daniel Ferenci a few years ago.Thanks Alan for the feedback.
Added the null check to the clones.
Moved the skb_clone's into the forwarding functions.Worked ok with Cisco XoT, linux X.25 back to back, and some old NTUs/PADs.
Signed-off-by: Andrew Hendry
Signed-off-by: David S. Miller
24 Jan, 2007
1 commit
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__x25_find_socket does a sock_hold.
This adds a missing sock_put in x25_receive_data.Signed-off-by: Andrew Hendry
Signed-off-by: David S. Miller
09 Jan, 2007
1 commit
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Trivial. Newlines missing on the SOCK_DEBUG's for X.25 facility
negotiation.Signed-off-by: Andrew Hendry
Signed-off-by: David S. Miller
04 Jan, 2007
1 commit
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This patch adds a proper prototype for x25_init_timers() in
include/net/x25.hSigned-off-by: Adrian Bunk
Signed-off-by: David S. Miller
01 Jul, 2006
1 commit
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Signed-off-by: Jörn Engel
Signed-off-by: Adrian Bunk
30 Apr, 2006
1 commit
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When the sk_timer function x25_heartbeat_expiry() is called by the
kernel in a running/terminating process, spinlock-recursion and
spinlock-lockup locks up the kernel. This has happened with testing
on some distro's and the patch below fixed it.Signed-off-by: Shaun Pereira
Signed-off-by: David S. Miller
22 Mar, 2006
4 commits
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Allows dte facility patch to use 32 64 bit ioctl conversion mechanism
Signed-off-by: Shaun Pereira
Signed-off-by: Andrew Morton
Signed-off-by: David S. Miller -
Allows use of the optional user facility to insert ITU-T
(http://www.itu.int/ITU-T/) specified DTE facilities in call set-up x25
packets. This feature is optional; no facilities will be added if the ioctl
is not used, and call setup packet remains the same as before.If the ioctls provided by the patch are used, then a facility marker will be
added to the x25 packet header so that the called dte address extension
facility can be differentiated from other types of facilities (as described in
the ITU-T X.25 recommendation) that are also allowed in the x25 packet header.Facility markers are made up of two octets, and may be present in the x25
packet headers of call-request, incoming call, call accepted, clear request,
and clear indication packets. The first of the two octets represents the
facility code field and is set to zero by this patch. The second octet of the
marker represents the facility parameter field and is set to 0x0F because the
marker will be inserted before ITU-T type DTE facilities.Since according to ITU-T X.25 Recommendation X.25(10/96)- 7.1 "All networks
will support the facility markers with a facility parameter field set to all
ones or to 00001111", therefore this patch should work with all x.25 networks.While there are many ITU-T DTE facilities, this patch implements only the
called and calling address extension, with placeholders in the
x25_dte_facilities structure for the rest of the facilities.Testing:
This patch was tested using a cisco xot router connected on its serial ports
to an X.25 network, and on its lan ports to a host running an xotd daemon.It is also possible to test this patch using an xotd daemon and an x25tap
patch, where the xotd daemons work back-to-back without actually using an x.25
network. See www.fyonne.net for details on how to do this.Signed-off-by: Shaun Pereira
Acked-by: Andrew Hendry
Signed-off-by: Andrew Morton
Signed-off-by: David S. Miller -
Fixes the following error from kernel
T2 kernel: schedule_timeout:
wrong timeout value ffffffffffffffff from ffffffff88164796Signed-off-by: Shaun Pereira
Acked-by: Arnd Bergmann
Signed-off-by: Andrew Morton
Signed-off-by: David S. Miller -
To allow 32 bit x25 module structures to be passed to a 64 bit kernel via
ioctl using the new compat_sock_ioctl registration mechanism instead of the
obsolete 'register_ioctl32_conversion into hash table' mechanismSigned-off-by: Shaun Pereira
Acked-by: Arnd Bergmann
Signed-off-by: Andrew Morton
Signed-off-by: David S. Miller
12 Jan, 2006
1 commit
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net: Use where capable() is used.
Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Jan, 2006
1 commit
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When a user-space server application calls bind on a socket, then in kernel
space this bound socket is considered 'x25-linked' and the SOCK_ZAPPED flag
is unset.(As in x25_bind()/af_x25.c).Now when a user-space client application attempts to connect to the server
on the listening socket, if the kernel accepts this in-coming call, then it
returns a new socket to userland and attempts to reply to the caller.The reply/x25_sendmsg() will fail, because the new socket created on
call-accept has its SOCK_ZAPPED flag set by x25_make_new().
(sock_init_data() called by x25_alloc_socket() called by x25_make_new()
sets the flag to SOCK_ZAPPED)).Fix: Using the sock_copy_flag() routine available in sock.h fixes this.
Tested on 32 and 64 bit kernels with x25 over tcp.
Signed-off-by: Shaun Pereira
Signed-off-by: Andrew Morton
Signed-off-by: David S. Miller
04 Jan, 2006
2 commits
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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 -
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
30 Aug, 2005
3 commits
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Lots of places just needs the states, not even linux/tcp.h, where this
enum was, needs it.This speeds up development of the refactorings as less sources are
rebuilt when things get moved from net/tcp.h.Signed-off-by: Arnaldo Carvalho de Melo
Signed-off-by: David S. Miller -
Bonding just wants the device before the skb_bond()
decapsulation occurs, so simply pass that original
device into packet_type->func() as an argument.It remains to be seen whether we can use this same
exact thing to get rid of skb->input_dev as well.Signed-off-by: David S. Miller
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Remove the "list" member of struct sk_buff, as it is entirely
redundant. All SKB list removal callers know which list the
SKB is on, so storing this in sk_buff does nothing other than
taking up some space.Two tricky bits were SCTP, which I took care of, and two ATM
drivers which Francois Romieu fixed
up.Signed-off-by: David S. Miller
Signed-off-by: Francois Romieu
12 Jul, 2005
1 commit
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Move the protocol specific config options out to the specific protocols.
With this change net/Kconfig now starts to become readable and serve as a
good basis for further re-structuring.The menu structure is left almost intact, except that indention is
fixed in most cases. Most visible are the INET changes where several
"depends on INET" are replaced with a single ifdef INET / endif pair.Several new files were created to accomplish this change - they are
small but serve the purpose that config options are now distributed
out where they belongs.Signed-off-by: Sam Ravnborg
Signed-off-by: David S. Miller
