linux-toradex.git/net/tipc/net.c, branch v3.2.73

tipc: Remove obsolete manipulation of message re-route count field

2011-09-01T15:16:35+00:00

Eliminates code that increments and validates the re-route count field
of payload messages, since the elimination of multi-cluster support
means that it is no longer necessary for TIPC to forward incoming messages
to another node. (The obsolete code was incorrect anyway, since it
incorrectly incremented the re-route count field of messages that
originated on the node that forwarded the message.)

Signed-off-by: Allan Stephens 
Signed-off-by: Paul Gortmaker

tipc: delete extra semicolon blocking node deletion

2011-03-14T16:21:12+00:00

Remove bogus semicolon only recently introduced in 34e46258cb9f5
that blocks cleanup of nodes for N>1 on shutdown.

Signed-off-by: Paul Gortmaker

tipc: manually inline net_start/stop, make assoc. vars static

2011-03-13T20:35:17+00:00

Relocates network-related variables into the subsystem files where
they are now primarily used (following the recent rework of TIPC's
node table), and converts globals into locals where possible. Changes
the initialization of tipc_num_links from run-time to compile-time,
and eliminates the net_start routine that becomes empty as a result.
Also eliminates the corresponding net_stop routine by moving its
(trivial) content into the one location that called the routine.

Signed-off-by: Allan Stephens 
Signed-off-by: Paul Gortmaker

tipc: Convert node object array to a hash table

2011-03-13T20:35:17+00:00

Replaces the dynamically allocated array of pointers to the cluster's
node objects with a static hash table. Hash collisions are resolved
using chaining, with a typical hash chain having only a single node,
to avoid degrading performance during processing of incoming packets.
The conversion to a hash table reduces the memory requirements for
TIPC's node table to approximately the same size it had prior to
the previous commit.

In addition to the hash table itself, TIPC now also maintains a
linked list for the node objects, sorted by ascending network address.
This list allows TIPC to continue sending responses to user space
applications that request node and link information in sorted order.
The list also improves performance when name table update messages are
sent by making it easier to identify the nodes that must be notified.

Signed-off-by: Allan Stephens 
Signed-off-by: Paul Gortmaker

tipc: Eliminate configuration for maximum number of cluster nodes

2011-03-13T20:35:17+00:00

Gets rid of the need for users to specify the maximum number of
cluster nodes supported by TIPC. TIPC now automatically provides
support for all 4K nodes allowed by its addressing scheme.

Note: This change sets TIPC's memory usage to the amount used by
a maximum size node table with 4K entries.  An upcoming patch that
converts the node table from a linear array to a hash table will
compact the node table to a more efficient design, but for clarity
it is nice to have all the Kconfig infrastruture go away separately.

Signed-off-by: Allan Stephens 
Signed-off-by: Paul Gortmaker

tipc: Split up unified structure of network-related variables

2011-03-13T20:35:17+00:00

Converts the fields of the global "tipc_net" structure into individual
variables.  Since the struct was never referenced as a complete unit,
its existence was pointless.  This will facilitate upcoming changes to
TIPC's node table and simpify upcoming relocation of the variables so
they are only visible to the files that actually use them.

This change is essentially cosmetic in nature, and doesn't affect the
operation of TIPC.

Signed-off-by: Allan Stephens 
Signed-off-by: Paul Gortmaker

tipc: Fix problem with missing link in "tipc-config -l" output

2011-03-13T20:35:16+00:00

Removes a race condition that could cause TIPC's internal counter
of the number of links it has to neighboring nodes to have the
incorrect value if two independent threads of control simultaneously
create new link endpoints connecting to two different nodes using two
different bearers. Such under counting would result in TIPC failing to
list the final link(s) in its response to a configuration request to
list all of the node's links. The counter is now updated atomically
to ensure that simultaneous increments do not interfere with each
other.

Thanks go to Peter Butler  for his assistance in
diagnosing and fixing this problem.

Signed-off-by: Allan Stephens 
Signed-off-by: Paul Gortmaker

tipc: remove redundant #includes

2011-01-01T21:57:54+00:00

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

Signed-off-by: Allan Stephens 
Signed-off-by: Paul Gortmaker 
Signed-off-by: David S. Miller

tipc: remove calls to dbg() and msg_dbg()

2011-01-01T21:57:52+00:00

Eliminates obsolete calls to two of TIPC's main debugging macros, as well
as a pair of associated debugging routines that are no longer required.

Signed-off-by: Allan Stephens 
Signed-off-by: Paul Gortmaker 
Signed-off-by: David S. Miller

tipc: Remove prototype code for supporting multiple clusters

2011-01-01T21:57:49+00:00

Eliminates routines, data structures, and files that were intended
to allow TIPC to support a network containing multiple clusters.
Currently, TIPC supports only networks consisting of a single cluster
within a single zone, so this code is unnecessary.

Signed-off-by: Allan Stephens 
Signed-off-by: Paul Gortmaker 
Signed-off-by: David S. Miller