Commit Graph

35 Commits

Author SHA1 Message Date
Allan Stephens 0e35fd5e52 tipc: Eliminate improper use of TIPC_OK error code
This patch corrects many places where TIPC routines indicated
successful completion by returning TIPC_OK instead of 0.
(The TIPC_OK symbol has the value 0, but it should only be used
in contexts that deal with the error code field of a TIPC
message header.)

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-14 22:44:01 -07:00
Allan Stephens 0ea522416b tipc: Remove unneeded parameter to tipc_createport_raw()
This patch eliminates an unneeded parameter when creating a low-level
TIPC port object.  Instead of returning both the pointer to the port
structure and the port's reference ID, it now returns only the pointer
since the port structure contains the reference ID as one of its fields.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-14 22:42:19 -07:00
Allan Stephens 99c145939b tipc: Fix bugs in rejection of message with short header
This patch ensures that TIPC doesn't try to access non-existent
message header fields when rejecting a message with a short header.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 17:48:25 -07:00
Allan Stephens 9bef54383d tipc: Message header creation optimizations
This patch eliminates several cases where message header fields
were being set to the same value twice.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 17:47:55 -07:00
Allan Stephens 7571521756 tipc: Optimize message initialization routine
This patch eliminates the rarely-used "error code" argument
when initializing a TIPC message header, since the default
value of zero is the desired result in most cases; the few
exceptional cases now set the error code explicitly.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 17:37:34 -07:00
Allan Stephens 5307e46957 tipc: Standardize error checking on incoming messages via native API
This patch re-orders & re-groups the error checks performed on
messages being delivered to native API ports, in order to clarify the
similarities and differences required for the various message types.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 17:28:45 -07:00
Allan Stephens 84b07c1638 tipc: Fix bug in connection setup via native API
This patch fixes a bug that prevented TIPC from receiving a
connection setup request message on a native TIPC port.
The revised connection setup logic ensures that validation
of the source of a connection-based message is skipped if
the port is not yet connected to a peer.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-04 17:28:21 -07:00
Allan Stephens 6d4a6672c8 tipc: Update "previous node" indicators when node address changes
This patch ensures that the "previous node" field in any existing
TIPC port message header templates is updated properly when a TIPC
network address is assigned to the node.  (Previously, only the
"originating node" field was updated.)

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-21 14:54:12 -07:00
Allan Stephens 7ef43ebaa5 tipc: Fix race condition when creating socket or native port
This patch eliminates the (very remote) chance of a crash resulting
from a partially initialized socket or native port unexpectedly
receiving a message.  Now, during the creation of a socket or native
port, the underlying generic port's lock is not released until all
initialization required to handle incoming messages has been done.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-12 15:42:28 -07:00
Allan Stephens 0c3141e910 [TIPC]: Overhaul of socket locking logic
This patch modifies TIPC's socket code to follow the same approach
used by other protocols.  This change eliminates the need for a
mutex in the TIPC-specific portion of the socket protocol data
structure -- in its place, the standard Linux socket backlog queue
and associated locking routines are utilized.  These changes fix
a long-standing receive queue bug on SMP systems, and also enable
individual read and write threads to utilize a socket without
unnecessarily interfering with each other.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-15 00:22:02 -07:00
Allan Stephens 06d82c9191 [TIPC]: Minor cleanup of message header code
This patch eliminates some unused or duplicate message header
symbols, and fixes up the comments and/or location of a few
other symbols.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-06 15:06:55 -08:00
Allan Stephens 8c8696553a [TIPC]: Removal of message header option code
This patch removes code associated with optional, user-specified
fields of the TIPC message header.  Such fields were never
utilized by TIPC, and have now been removed from the protocol
specification.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-06 15:05:07 -08:00
Julia Lawall 4cec72c890 [TIPC]: Use tipc_port_unlock
The file net/tipc/port.c takes a lock using the function tipc_port_lock and
then releases the lock sometimes using tipc_port_unlock and sometimes using
spin_unlock_bh(p_ptr->publ.lock).  tipc_port_unlock simply does the
spin_unlock_bh, but it seems cleaner to use it everywhere.

The problem was fixed using the following semantic patch.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
struct port *p_ptr;
@@

   p_ptr = tipc_port_lock(...)
   ...
(
   p_ptr = tipc_port_lock(...);
|
?- spin_unlock_bh(p_ptr->publ.lock);
+  tipc_port_unlock(p_ptr);
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Jon Paul Maloy <maloy@donjonn.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:01:05 -08:00
Jesper Juhl 897c77cab0 [TIPC]: Clean up duplicate includes in net/tipc/
This patch cleans up duplicate includes in
	net/tipc/

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-08-13 22:52:07 -07:00
Allan Stephens 05646c9110 [TIPC]: Optimize stream send routine to avoid fragmentation
This patch enhances TIPC's stream socket send routine so that
it avoids transmitting data in chunks that require fragmentation
and reassembly, thereby improving performance at both the
sending and receiving ends of the connection.

The "maximum packet size" hint that records MTU info allows
the socket to decide how big a chunk it should send; in the
event that the hint has become stale, fragmentation may still
occur, but the data will be passed correctly and the hint will
be updated in time for the following send.  Note: The 66060 byte
pseudo-MTU used for intra-node connections requires the send
routine to perform an additional check to ensure it does not
exceed TIPC"s limit of 66000 bytes of user data per chunk.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Jon Paul Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-10 22:06:12 -07:00
Arnaldo Carvalho de Melo 27d7ff46a3 [SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}
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 <acme@ghostprotocols.net>
2007-04-25 22:28:29 -07:00
YOSHIFUJI Hideaki c430728526 [NET] TIPC: Fix whitespace errors.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-10 23:20:15 -08:00
Adrian Bunk d55b4c631e [TIPC] net/tipc/port.c: fix NULL dereference
The correct order is: NULL check before dereference

Spotted by the Coverity checker.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-01 15:42:33 -08:00
Allan Stephens 065fd1772a [TIPC]: Add missing unlock in port timeout code.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-18 19:55:13 -07:00
Panagiotis Issaris 0da974f4f3 [NET]: Conversions from kmalloc+memset to k(z|c)alloc.
Signed-off-by: Panagiotis Issaris <takis@issaris.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-21 14:51:30 -07:00
Ingo Molnar 34af946a22 [PATCH] spin/rwlock init cleanups
locking init cleanups:

 - convert " = SPIN_LOCK_UNLOCKED" to spin_lock_init() or DEFINE_SPINLOCK()
 - convert rwlocks in a similar manner

this patch was generated automatically.

Motivation:

 - cleanliness
 - lockdep needs control of lock initialization, which the open-coded
   variants do not give
 - it's also useful for -rt and for lock debugging in general

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:39 -07:00
Allan Stephens a10bd924a4 [TIPC]: Enhanced & cleaned up system messages; fixed 2 obscure memory leaks.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-25 23:52:17 -07:00
Allan Stephens f131072c3d [TIPC]: First phase of assert() cleanup
This also contains enhancements to simplify comparisons in name table
publication removal algorithm and to simplify name table sanity checking
when shutting down TIPC.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-25 23:51:37 -07:00
Allan Stephens a75bf87427 [TIPC]: Added missing warning for out-of-memory condition
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-25 23:50:01 -07:00
Allan Stephens a7513528cd [TIPC]: Withdrawing all names from nameless port now returns success, not error
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-25 23:49:33 -07:00
Allan Stephens 9688243b63 [TIPC]: Allow ports to receive multicast messages through native API.
This fix prevents a kernel panic if an application mistakenly sends a
multicast message to  TIPC's topology service or configuration service.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-25 23:38:58 -07:00
Per Liden 7c501a5960 [TIPC]: Remove unused functions
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:37:27 -08:00
Sam Ravnborg 05790c6456 [TIPC]: Remove inlines from *.c
With reference to latest discussions on linux-kernel with respect to
inline here is a patch for tipc to remove all inlines as used in
the .c files. See also chapter 14 in Documentation/CodingStyle.

Before:
   text        data     bss     dec     hex filename
 102990        5292    1752  110034   1add2 tipc.o

Now:
   text        data     bss     dec     hex filename
 101190        5292    1752  108234   1a6ca tipc.o

This is a nice text size reduction which will improve icache usage.
In some cases bigger (> 4 lines) functions where declared inline
and used in many places, they are most probarly no longer inlined by gcc
resulting in the size reduction.
There are several one liners that no longer are declared inline, but gcc
should inline these just fine without the inline hint.

With this patch applied one warning is added about an unused static
function - that was hidded by utilising inline before.
The function in question were kept so this patch is solely a
inline removal patch.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:37:04 -08:00
Sam Ravnborg 1fc54d8f49 [TIPC]: Fix simple sparse warnings
Tried to run the new tipc stack through sparse.
Following patch fixes all cases where 0 was used
as replacement of NULL.
Use NULL to document this is a pointer and to silence sparse.

This brough sparse warning count down with 127 to 24 warnings.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:36:47 -08:00
Per Liden 4323add677 [TIPC] Avoid polluting the global namespace
This patch adds a tipc_ prefix to all externally visible symbols.

Signed-off-by: Per Liden <per.liden@ericsson.com>
2006-01-18 00:45:16 +01:00
David S. Miller 880b005f29 [TIPC]: Fix 64-bit build warnings.
When storing u32 values in a pointer, need to do
some long casts to keep GCC happy.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 14:06:41 -08:00
Per Liden 593a5f22d8 [TIPC] More updates of file headers
Updated copyright notice to include the year the file was
actually created. Information about file creation dates
was extracted from the files in the old CVS repository
at tipc.sourceforge.net.

Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>
2006-01-12 14:06:39 -08:00
Per Liden 9da1c8b694 [TIPC] Update of file headers
The copyright statements from different parts of Ericsson
have been merged into one.

Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>
2006-01-12 14:06:38 -08:00
Per Liden 9ea1fd3c1a [TIPC] License header update
The license header in each file now more clearly state that this
code is licensed under a dual BSD/GPL. Before this was only
evident if you looked at the MODULE_LICENSE line in core.c.

Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>
2006-01-12 14:06:36 -08:00
Per Liden b97bf3fd8f [TIPC] Initial merge
TIPC (Transparent Inter Process Communication) is a protocol designed for
intra cluster communication. For more information see
http://tipc.sourceforge.net

Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>
2006-01-12 14:06:31 -08:00