History log of /net/tipc/msg.c
Revision Date Author Comments
50100a5e39461b2a61d6040e73c384766c29975d 23-Aug-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: use pseudo message to wake up sockets after link congestion

The current link implementation keeps a linked list of blocked ports/
sockets that is populated when there is link congestion. The purpose
of this is to let the link know which users to wake up when the
congestion abates.

This adds unnecessary complexity to the data structure and the code,
since it forces us to involve the link each time we want to delete
a socket. It also forces us to grab the spinlock port_lock within
the scope of node_lock. We want to get rid of this direct dependence,
as well as the deadlock hazard resulting from the usage of port_lock.

In this commit, we instead let the link keep list of a "wakeup" pseudo
messages for use in such situations. Those messages are sent to the
pending sockets via the ordinary message reception path, and wake up
the socket's owner when they are received.

This enables us to get rid of the 'waiting_ports' linked lists in struct
tipc_port that manifest this direct reference. As a consequence, we can
eliminate another BH entry into the socket, and hence the need to grab
port_lock. This is a further step in our effort to remove port_lock
altogether.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1dd0bd2b14032037d40a316dd52370f1713fa62b 23-Aug-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: introduce new function tipc_msg_create()

The function tipc_msg_init() has turned out to be of limited value
in many cases. It take too few parameters to be usable for creating
a complete message, it makes too many assumptions about what the
message should be used for, and it does not allocate any buffer to
be returned to the caller.

Therefore, we now introduce the new function tipc_msg_create(), which
takes all the parameters needed to create a full message, and returns
a buffer of the requested size. The new function will be very useful
for the changes we will be doing in later commits in this series.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13e9b9972fa0f34059e737ae215a26e43966b46f 25-Jul-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: make tipc_buf_append() more robust

As per comment from David Miller, we try to make the buffer reassembly
function more resilient to user errors than it is today.

- We check that the "*buf" parameter always is set, since this is
mandatory input.

- We ensure that *buf->next always is set to NULL before linking in
the buffer, instead of relying of the caller to have done this.

- We ensure that the "tail" pointer in the head buffer's control
block is initialized to NULL when the first fragment arrives.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9fbfb8b120bd4fe89cd70d6c8841e6e1cfab2609 17-Jul-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: rename temporarily named functions

After the previous commit, we can now give the functions with temporary
names, such as tipc_link_xmit2(), tipc_msg_build2() etc., their proper
names.

There are no functional changes in this commit.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
c4116e10579c5bbbfc3cd2ad0324ee0d8691e531 17-Jul-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: remove unreferenced functions

We can now remove a number of functions which have become obsolete
and unreferenced through this commit series. There are no functional
changes in this commit.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
078bec826f7b73cf2a2397680537bcb7e075b492 17-Jul-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: add new functions for multicast and broadcast distribution

We add a new broadcast link transmit function in bclink.c and a new
receive function in socket.c. The purpose is to move the branching
between external and internal destination down to the link layer,
just as we have done with unicast in earlier commits. We also make
use of the new link-independent fragmentation support that was
introduced in an earlier commit series.

This gives a shorter and simpler code path, and makes it possible
to obtain copy-free buffer delivery to all node local destination
sockets.

The new transmission code is added in parallel with the existing one,
and will be used by the socket multicast send function in the next
commit in this series.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
29322d0db98e5a84f5cc6a55655bee3dc4ffb5ab 05-Jul-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: fix bug in multicast/broadcast message reassembly

Since commit 37e22164a8a3c39bdad45aa463b1e69a1fdf4110 ("tipc: rename and
move message reassembly function") reassembly of long broadcast messages
has been broken. This is because we test for a non-NULL return value
of the *buf parameter as criteria for succesful reassembly. However, this
parameter is left defined even after reception of the first fragment,
when reassebly is still incomplete. This leads to a kernel crash as soon
as a the first fragment of a long broadcast message is received.

We fix this with this commit, by implementing a stricter behavior of the
function and its return values.

This commit should be applied to both net and net-next.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ac0074ee70ddb32f62d918b31cb20e3c947c75a1 26-Jun-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: clean up connection protocol reception function

We simplify the code for receiving connection probes, leveraging the
recently introduced tipc_msg_reverse() function. We also stick to
the principle of sending a possible response message directly from
the calling (tipc_sk_rcv or backlog_rcv) functions, hence making
the call chain shallower and easier to follow.

We make one small protocol change here, allowed according to
the spec. If a protocol message arrives from a remote socket that
is not the one we are connected to, we are currently generating a
connection abort message and send it to the source. This behavior
is unnecessary, and might even be a security risk, so instead we
now choose to only ignore the message. The consequnce for the sender
is that he will need longer time to discover his mistake (until the
next timeout), but this is an extreme corner case, and may happen
anyway under other circumstances, so we deem this change acceptable.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5a379074a7dd6d288ec9e6472769ba0e0c54dd85 26-Jun-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: introduce message evaluation function

When a message arrives in a node and finds no destination
socket, we may need to drop it, reject it, or forward it after
a secondary destination lookup. The latter two cases currently
results in a code path that is perceived as complex, because it
follows a deep call chain via obscure functions such as
net_route_named_msg() and net_route_msg().

We now introduce a function, tipc_msg_eval(), that takes the
decision about whether such a message should be rejected or
forwarded, but leaves it to the caller to actually perform
the indicated action.

If the decision is 'reject', it is still the task of the recently
introduced function tipc_msg_reverse() to take the final decision
about whether the message is rejectable or not. In the latter case
it drops the message.

As a result of this change, we can finally eliminate the function
net_route_named_msg(), and hence become independent of net_route_msg().

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8db1bae30b7cd3c3abc05f467d0f7c69b33b80e9 26-Jun-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: separate building and sending of rejected messages

The way we build and send rejected message is currenty perceived as
hard to follow, partly because we let the transmission go via deep
call chains through functions such as tipc_reject_msg() and
net_route_msg().

We want to remove those functions, and make the call sequences shallower
and simpler. For this purpose, we separate building and sending of
rejected messages. We build the reject message using the new function
tipc_msg_reverse(), and let the transmission go via the newly introduced
tipc_link_xmit2() function, as all transmission eventually will do. We
also ensure that all calls to tipc_link_xmit2() are made outside
port_lock/bh_lock_sock.

Finally, we replace all calls to tipc_reject_msg() with the two new
calls at all locations in the code that we want to keep. The remaining
calls are made from code that we are planning to remove, along with
tipc_reject_msg() itself.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
067608e9d019d6477fd45dd948e81af0e5bf599f 26-Jun-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: introduce direct iovec to buffer chain fragmentation function

Fragmentation at message sending is currently performed in two
places in link.c, depending on whether data to be transmitted
is delivered in the form of an iovec or as a big sk_buff. Those
functions are also tightly entangled with the send functions
that are using them.

We now introduce a re-entrant, standalone function, tipc_msg_build2(),
that builds a packet chain directly from an iovec. Each fragment is
sized according to the MTU value given by the caller, and is prepended
with a correctly built fragment header, when needed. The function is
independent from who is calling and where the chain will be delivered,
as long as the caller is able to indicate a correct MTU.

The function is tested, but not called by anybody yet. Since it is
incompatible with the existing tipc_msg_build(), and we cannot yet
remove that function, we have given it a temporary name.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4f1688b2c63cd86f0d7bcf95a9b3040e38bd3c1a 26-Jun-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: introduce send functions for chained buffers in link

The current link implementation provides several different transmit
functions, depending on the characteristics of the message to be
sent: if it is an iovec or an sk_buff, if it needs fragmentation or
not, if the caller holds the node_lock or not. The permutation of
these options gives us an unwanted amount of unnecessarily complex
code.

As a first step towards simplifying the send path for all messages,
we introduce two new send functions at link level, tipc_link_xmit2()
and __tipc_link_xmit2(). The former looks up a link to the message
destination, and if one is found, it grabs the node lock and calls
the second function, which works exclusively inside the node lock
protection. If no link is found, and the destination is on the same
node, it delivers the message directly to the local destination
socket.

The new functions take a buffer chain where all packet headers are
already prepared, and the correct MTU has been used. These two
functions will later replace all other link-level transmit functions.

The functions are not backwards compatible, so we have added them
as new functions with temporary names. They are tested, but have no
users yet. Those will be added later in this series.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
37e22164a8a3c39bdad45aa463b1e69a1fdf4110 14-May-2014 Jon Paul Maloy <jon.maloy@ericsson.com> tipc: rename and move message reassembly function

The function tipc_link_frag_rcv() is in reality a re-entrant generic
message reassemby function that has nothing in particular to do with
the link, where it is defined now. This becomes obvious when we see
the need to call the function from other places in the code.

In this commit rename it to tipc_buf_append() and move it to the file
msg.c. We also simplify its signature by moving the tail pointer to
the control block of the head buffer, hence making the head buffer
self-contained.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9446b87addd90a067b21c726aedd3c42694c1780 18-Oct-2013 Ying Xue <ying.xue@windriver.com> tipc: remove iovec length parameter from all sending functions

tipc_msg_build() now copies message data from iovec to skb_buff
using memcpy_fromiovecend(), which doesn't need to be passed the
iovec length to perform the copying.

So we remove the parameter indicating iovec length in all
functions where TIPC messages are built and sent.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5c0a0fc81f4dc786b42c4fc9c7c72ba635406ab5 18-Oct-2013 Ying Xue <ying.xue@windriver.com> tipc: don't use memcpy to copy from user space

tipc_msg_build() calls skb_copy_to_linear_data_offset() to copy data
from user space to kernel space. However, the latter function does
in its turn call memcpy() to perform the actual copying. This poses
an obvious security and robustness risk, since memcpy() never makes
any validity check on the pointer it is copying from.

To correct this, we the replace the offending function call with
a call to memcpy_fromiovecend(), which uses copy_from_user() to
perform the copying.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
ae8509c420122866344bde1241e31858d0aa2fbc 17-Jun-2013 Paul Gortmaker <paul.gortmaker@windriver.com> tipc: cosmetic realignment of function arguments

No runtime code changes here. Just a realign of the function
arguments to start where the 1st one was, and fit as many args
as can be put in an 80 char line.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
f1733d7580ff94deb8ea071a293c23939ae0d450 17-Jun-2013 Ying Xue <ying.xue@windriver.com> tipc: remove user_port instance from tipc_port structure

After the native API has been completely removed, the 'user_port'
field in struct tipc_port becomes unused, and can be removed.
As a consequence, the "usrmem" argument in tipc_msg_build() is no
longer needed, and so we remove that one too.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
568fc588fce85602e4e2c7573f6f912311306b72 29-Jun-2012 Erik Hugne <erik.hugne@ericsson.com> tipc: remove TIPC packet debugging functions and macros

The link queue traces and packet level debug functions served
a purpose during early development, but are now redundant
since there are other, more capable tools available for
debugging at the packet level.

The TIPC_DEBUG Kconfig option is removed since it does not
provide any extra debugging features anymore.

This gets rid of a lot of tipc_printf usages, which will
make the pending cleanup work of that function easier.

Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
617d3c7a50b3dc15f558d60013047aede79dc055 30-Apr-2012 Paul Gortmaker <paul.gortmaker@windriver.com> tipc: compress out gratuitous extra carriage returns

Some of the comment blocks are floating in limbo between two
functions, or between blocks of code. Delete the extra line
feeds between any comment and its associated following block
of code, to be consistent with the majority of the rest of
the kernel. Also delete trailing newlines at EOF and fix
a couple trivial typos in existing comments.

This is a 100% cosmetic change with no runtime impact. We get
rid of over 500 lines of non-code, and being blank line deletes,
they won't even show up as noise in git blame.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
5f6d9123f1c7ef7297b0da1620988fe16c738e75 04-Nov-2011 Allan Stephens <allan.stephens@windriver.com> tipc: Eliminate trivial buffer manipulation helper routines

Gets rid of two inlined routines that simply call existing sk_buff
manipulation routines, since there is no longer any extra processing
done by the helper routines.

Note that these changes are essentially cosmetic in nature, and have
no impact on the actual operation of TIPC.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
3d749a6a26b0811b4b2bb4ec2c47cd630a6bbf88 07-Oct-2011 Allan Stephens <allan.stephens@windriver.com> tipc: Hide media-specific addressing details from generic bearer code

Reworks TIPC's media address data structure and associated processing
routines to transfer all media-specific details of address conversion
to the associated TIPC media adaptation code. TIPC's generic bearer code
now only needs to know which media type an address is associated with
and whether or not it is a broadcast address, and totally ignores the
"value" field that contains the actual media-specific addressing info.

These changes eliminate the need for a number of endianness conversion
operations and will make it easier for TIPC to support new media types
in the future.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
15f4e2b30372695573bc46102790094a92b3eb11 31-May-2011 Allan Stephens <allan.stephens@windriver.com> tipc: Eliminate useless check when creating internal message

Gets rid of code that allows tipc_msg_init() to create a short
payload message header. This optimization is possible because
there are no longer any callers who require this capability.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2689690469c9fd76f9db0afcdf2523f48cce4006 21-Apr-2011 Allan Stephens <Allan.Stephens@windriver.com> tipc: Avoid recomputation of outgoing message length

Rework TIPC's message sending routines to take advantage of the total
amount of data value passed to it by the kernel socket infrastructure.
This change eliminates the need for TIPC to compute the size of outgoing
messages itself, as well as the check for an oversize message in
tipc_msg_build(). In addition, this change warrants an explanation:

- res = send_packet(NULL, sock, &my_msg, 0);
+ res = send_packet(NULL, sock, &my_msg, bytes_to_send);

Previously, the final argument to send_packet() was ignored (since the
amount of data being sent was recalculated by a lower-level routine)
and we could just pass in a dummy value (0). Now that the
recalculation is being eliminated, the argument value being passed to
send_packet() is significant and we have to supply the actual amount
of data we want to send.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
390bce4237487975c2168aa5fa786f75ead66852 11-Mar-2011 Allan Stephens <allan.stephens@windriver.com> tipc: Eliminate obsolete routine for handling routed messages

Eliminates a routine that is used in handling messages arriving from
another cluster or zone. Such messages can no longer be received by TIPC
now that multi-cluster and multi-zone network support has been eliminated.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
7945c1fb02ef08316df8c054ce180bf3f4e35ae4 11-Mar-2011 Allan Stephens <allan.stephens@windriver.com> tipc: Eliminate remaining support for routing table messages

Gets rid of all remaining code relating to ROUTE_DISTRIBUTOR messages.
These messages were only used in multi-cluster and multi-zone networks,
which TIPC no longer supports. (For safety, TIPC now treats such messages
the same way that it handles other unrecognized messages.)

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
e7b3acb6a85266dfd3e102b3d15b51b0ecd6bc2e 27-Feb-2011 Allan Stephens <Allan.Stephens@windriver.com> tipc: Eliminate timestamp from link protocol messages

Removes support for the timestamp field of TIPC's link protocol messages.

This field was previously used to hold an OS-dependent timestamp value
that was used to assist in debugging early versions of TIPC. The field
has now been deemed unnecessary and has been removed from the latest TIPC
specification. This change has no impact on the operation of TIPC since
the field was set by TIPC, but never referenced.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2e07dda1659095115e5e36a2fed0fddc1e3ea1c8 25-Jan-2011 Allan Stephens <Allan.Stephens@windriver.com> tipc: Remove unused message header field for requested number of links

Eliminates support for the "number of requested links" field in a neighbor
discovery message. This field was never used and has been removed from
the TIPC 2.0 protocol specification.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
741de3e9ff6e07e908e1cad2eb03e29677fde093 25-Jan-2011 Allan Stephens <Allan.Stephens@windriver.com> tipc: Remove support for per-connection message sequence numbering

Eliminates TIPC's prototype support for message sequence numbering
on routable connections (i.e. connections requiring more than one hop).
This capability isn't currently used, and can be removed since TIPC
only supports systems in which all inter-node communication can be
achieved in a single hop.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
a016892cd6eb8d3dd9769021b088917ac7371abd 31-Dec-2010 Allan Stephens <Allan.Stephens@windriver.com> tipc: remove extraneous braces from single statements

Cleans up TIPC's source code to eliminate the presence of unnecessary
use of {} around single statements.

These changes are purely cosmetic and do not alter the operation of TIPC
in any way.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
0e65967e33be61e5f67727edd4ea829b47676fc0 31-Dec-2010 Allan Stephens <Allan.Stephens@windriver.com> tipc: cleanup various cosmetic whitespace issues

Cleans up TIPC's source code to eliminate deviations from generally
accepted coding conventions relating to leading/trailing white space
and white space around commas, braces, cases, and sizeof.

These changes are purely cosmetic and do not alter the operation of TIPC
in any way.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
886ef52a8ce6930a9d0c58267d5b5038ac3e8d30 31-Dec-2010 Allan Stephens <Allan.Stephens@windriver.com> tipc: remove redundant #includes

Eliminates a number of #include statements that no longer serve any
useful purpose.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6e7e309c62ab584348e0fef90c8e3e48f634dba1 31-Dec-2010 Allan Stephens <Allan.Stephens@windriver.com> tipc: Finish streamlining of debugging code

Completes the simplification of TIPC's debugging capabilities. By default
TIPC includes no debugging code, and any debugging code added by developers
that calls the dbg() and dbg_macros() is compiled out. If debugging support
is enabled, TIPC prints out some additional data about its internal state
when certain abnormal conditions occur, and any developer-added calls to the
TIPC debug macros are compiled in.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
c80262829769419e19527f972672e8df0480235a 30-Nov-2010 Allan Stephens <allan.stephens@windriver.com> tipc: Remove obsolete inclusions of header files

Gets rid of #include statements that are no longer required as a
result of the merging of obsolete native API header file content
into other TIPC include files.

Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
31e3c3f6f1f9b154981a0e6620df700463db30ee 13-Oct-2010 stephen hemminger <shemminger@vyatta.com> tipc: cleanup function namespace

Do some cleanups of TIPC based on make namespacecheck
1. Don't export unused symbols
2. Eliminate dead code
3. Make functions and variables local
4. Rename buf_acquire to tipc_buf_acquire since it is used in several files

Compile tested only.
This make break out of tree kernel modules that depend on TIPC routines.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23461e835b3537dd395828b090fb1cb64a198f85 11-May-2010 Allan Stephens <allan.stephens@windriver.com> tipc: Reduce footprint by un-inlining tipc_msg_* routines

Convert tipc_msg_* inline routines that are more than one line into
standard functions, thereby eliminating some repeated code.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
e0d4e3d0d72cfae7b7eac14e39e12dfc6b406313 05-Jun-2008 Allan Stephens <allan.stephens@windriver.com> tipc: Fix bugs in message error code display when debugging

This patch corrects two problems in the display of error code
information in TIPC messages when debugging:
- no longer tries to display error code in NAME_DISTRIBUTOR
messages, which don't have the error field
- now displays error code in 24 byte data messages, which do
have the error field

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
48c971394626173eaf1c33441ea1d900c88b21a3 05-May-2008 Allan Stephens <allan.stephens@windriver.com> tipc: Exclude debug-only print buffer code when not debugging

This patch modifies TIPC to only exclude debug-related print buffer
routines when debugging capabilities are not required. It also
fixes up some related #defines that exceed 80 characters.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
06d82c9191261942ce7873ce4a8735fd2a15e662 07-Mar-2008 Allan Stephens <allan.stephens@windriver.com> [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>
c43072852649d8382b81237ce51195bcec36f24a 09-Feb-2007 YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> [NET] TIPC: Fix whitespace errors.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4323add67792ced172d0d93b8b2e6187023115f1 18-Jan-2006 Per Liden <per.liden@ericsson.com> [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>
593a5f22d8035b1396a958b6bbde9f13c0f09549 11-Jan-2006 Per Liden <per.liden@nospam.ericsson.com> [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>
9da1c8b694f8e72a16f259614caaae50cbcdaf10 11-Jan-2006 Per Liden <per.liden@nospam.ericsson.com> [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>
9ea1fd3c1a15c620d1e3d0aa269d34b705477003 11-Jan-2006 Per Liden <per.liden@nospam.ericsson.com> [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>
b97bf3fd8f6a16966d4f18983b2c40993ff937d4 02-Jan-2006 Per Liden <per.liden@nospam.ericsson.com> [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>