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2012-04-19tipc: Update node-scope publications when network address is assignedAllan Stephens1-4/+10
Ensures that node-scope name publications that exist prior to the configuration of a node's network address are properly re-initialized with that address when it is assigned. TIPC's node-scope publications are now tracked using a publications list like the lists used for cluster-scope and zone-scope publications so they can be easily updated when required. The inclusion of node scope name publications in a conventional publication list means that they must now also be withdrawn, just like cluster and zone scope publications are currently withdrawn. So some conditional tests on scope ==/!= TIPC_NODE_SCOPE are inserted/removed accordingly. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-04-19tipc: Separate cluster-scope and zone-scope names into distinct listsAllan Stephens1-5/+26
Utilizes distinct lists to track zone-scope and cluster-scope names published by a node. For now, TIPC continues to process the entries in both lists in the same way; however, an upcoming patch will utilize the existence of the lists to prevent the sending of cluster-scope names to nodes that are not part of the local cluster. To achieve this, an array of publication lists is introduced, so that they can be iterated over and accessed via publ->scope as an index where convenient. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-04-18tipc: Factor out name publication code to a separate functionAllan Stephens1-27/+34
This is done so that it can be reused with differing publication lists, instead of being hard coded to the cluster publicaton list. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-04-18tipc: introduce publication lists structAllan Stephens1-10/+17
There is currently a single list that is containing both cluster-scope and zone-scope publications, and the list count is a separate free floating variable. Create a struct to bind the count to the list, and to pave the way for factoring out the publications into zone/cluster/node scope. The current "publ_root" most matches what will be the cluster scope list, so it is named accordingly in this commit. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-02-24tipc: Eliminate trivial buffer manipulation helper routinesAllan Stephens1-2/+2
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>
2012-02-06tipc: Eliminate alteration of publication key during name table purgingAllan Stephens1-4/+0
Removes code that alters the publication key of a name table entry that is being forcibly purged from TIPC's name table after contact with the publishing node has been lost. Current TIPC ensures that all defunct names are purged before re-establishing contact with a failed node. There used to be a risk that the publication might be accidentally deleted because it might be re-added to the name table before the purge operation was completed. But now there is no longer a need to ensure that the new key is different than the old one. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-12-29tipc: rename struct link* to struct tipc_link*Paul Gortmaker1-1/+1
This converts the following: struct link -> struct tipc_link struct link_req -> struct tipc_link_req struct link_name -> struct tipc_link_name Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-12-27tipc: Eliminate useless check when network address is assignedAllan Stephens1-7/+5
Gets rid of an unnecessary check in the routine that updates the port id of a node's name publications when the node is assigned a network address, since the routine is only invoked if the new address is different from the existing one. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-09-17tipc: Enhance sending of bulk name table messagesAllan Stephens1-2/+8
Modifies the initial transfer of name table entries to a new neighboring node so that the messages are enqueued as a unit, rather than individually. The revised algorithm now locates the link carrying the message only once, and eliminates unnecessary checks for link congestion, message fragmentation, and message bundling that are not required when sending these messages. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-09-17tipc: relocate/coalesce node cast in tipc_named_node_upPaul Gortmaker1-2/+3
Functions like this are called using unsigned longs from function pointers. In this case, the function is passed in a node which is normally internally treated as a u32 by TIPC. Rather than add more casts into this function in the future for each added use of node within, move the cast to a single place on a local. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-09-17tipc: Prevent fragmented messages during initial name table exchangeAllan Stephens1-3/+19
Reduces the maximum size of messages sent during the initial exchange of name table information between two nodes to be no larger than the MTU of the first link established between the nodes. This ensures that messages will never need to be fragmented, which would add unnecessary overhead to the name table synchronization mechanism. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-06-24tipc: Cleanup of message header size terminologyAllan Stephens1-3/+3
Performs cosmetic cleanup of the symbolic names used to specify TIPC payload message header sizes. The revised names now more accurately reflect the payload messages in which they can appear. In addition, several places where these payload message symbol names were being used to create non-payload messages have been updated to use the proper internal message symbolic name. No functional changes are introduced by this rework. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-03-31Fix common misspellingsLucas De Marchi1-1/+1
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-13tipc: cosmetic - function names are not to be full sentencesPaul Gortmaker1-1/+1
Function names like "tipc_node_has_redundant_links" are unweildy and result in long lines even for simple lines. The "has" doesn't contribute any value add, so dropping that is a slight step in the right direction. This is a cosmetic change, basic result of: for i in `grep -l tipc_node_has_ *` ; do sed -i s/tipc_node_has_/tipc_node_/ $i ; done Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-03-13tipc: Convert node object array to a hash tableAllan Stephens1-4/+2
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 <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-03-13tipc: Split up unified structure of network-related variablesAllan Stephens1-2/+2
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 <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-03-13tipc: Cosmetic changes to node subscription codeAllan Stephens1-3/+4
Relocates the code that notifies users of node subscriptions so that it is adjacent to the rest of the routines that implement TIPC's node subscription capability. Renames the name table routine that is invoked by a node subscription to better reflect its purpose and to be consistent with other, similar name table routines. These changes are cosmetic in nature, and do not alter the behavior of TIPC. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-03-13tipc: Prevent null pointer error when removing a node subscriptionAllan Stephens1-2/+3
Prevents a null pointer dereference from occurring if a node subscription is triggered at the same time that the subscribing port or publication is terminating the subscription. The problem arises if the triggering routine asynchronously activates and deregisters the node subscription while deregistration is already underway -- the deregistration routine may find that the pointer it has just verified to be non-NULL is now NULL. To avoid this race condition the triggering routine now simply marks the node subscription as defunct (to prevent it from re-activating) instead of deregistering it. The subscription is now both deregistered and destroyed only when the subscribing port or publication code terminates the node subscription. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-01-01tipc: remove zeroing assignments to static global variablesAllan Stephens1-1/+1
Cleans up TIPC's source code to eliminate the needless initialization of static variables to zero. 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>
2011-01-01tipc: remove pointless check for NULL prior to kfreeAllan Stephens1-3/+1
It is acceptable to call kfree() with NULL, so these checks are not serving 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>
2011-01-01tipc: remove redundant #includesAllan Stephens1-1/+0
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>
2011-01-01tipc: remove calls to dbg() and msg_dbg()Allan Stephens1-14/+0
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 <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-01tipc: Remove prototype code for supporting multiple clustersAllan Stephens1-4/+24
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 <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-02tipc: Remove obsolete inclusions of header filesAllan Stephens1-2/+0
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>
2010-10-16tipc: cleanup function namespacestephen hemminger1-1/+1
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>
2010-05-12tipc: add tipc_ prefix to fcns targeted for un-inliningAllan Stephens1-1/+1
These functions have enough code in them such that they seem like sensible targets for un-inlining. Prior to doing that, this adds the tipc_ prefix to the functions, so that in the event of a panic dump or similar, the subsystem from which the functions come from is immediately clear. 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>
2008-06-04tipc: Optimize message initialization routineAllan Stephens1-2/+1
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>
2008-05-05tipc: Fix null pointer dereference in debug codeAllan Stephens1-3/+0
This patch eliminates an obsolete use of the DBG_OUTPUT print buffer which could lead to a null pointer crash in tipc_printf() if TIPC's debugging capabilities are configured. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-10[NET] TIPC: Fix whitespace errors.YOSHIFUJI Hideaki1-32/+32
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02[TIPC]: endianness annotationsAl Viro1-5/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-18[TIPC]: Name publication events now delivered in chronological orderAllan Stephens1-1/+1
This patch tivially re-orders the entries in TIPC's list of local publications so that applications will receive publication events in the order they were published. 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[TIPC]: Enhanced & cleaned up system messages; fixed 2 obscure memory leaks.Allan Stephens1-5/+5
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[TIPC]: First phase of assert() cleanupAllan Stephens1-3/+17
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>
2006-04-18[NET]: Remove redundant NULL checks before [kv]freeJesper Juhl1-2/+1
Redundant NULL check before kfree removal from net/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20[TIPC]: Fix simple sparse warningsSam Ravnborg1-3/+3
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>
2006-01-18[TIPC] Avoid polluting the global namespacePer Liden1-46/+46
This patch adds a tipc_ prefix to all externally visible symbols. Signed-off-by: Per Liden <per.liden@ericsson.com>
2006-01-12[TIPC] More updates of file headersPer Liden1-1/+1
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[TIPC] Update of file headersPer Liden1-2/+1
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[TIPC] License header updatePer Liden1-19/+23
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[TIPC] Initial mergePer Liden1-0/+306
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>
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