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* tipc: Remove support for per-connection message sequence numberingAllan Stephens2011-02-23
| | | | | | | | | | | 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>
* tipc: Add in missing lock during link initializationAllan Stephens2011-02-23
| | | | | | | | | | Ensure that the routine that starts up processing on a newly created link endpoint takes the spinlock of the node object that owns the link, to prevent possible conflicts with processing involving other links owned by that node object. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Fix port counter handling to correct congestion controlAllan Stephens2011-02-23
| | | | | | | | | | | | | | | | | | | | | | | | | | Modifies TIPC's congestion control between a connected port and its peer so that it works as documented. The following changes have been made: 1) The counter of the number of messages sent by a port now starts at zero, rather than one. This prevents the port from reporting port congestion one message earlier than it was supposed to. 2) The counter of the number of messages sent by a port is now incremented only if a non-empty message is sent successfully. This prevents the port from becoming permanently congested if too many send attempts are unsuccessful because of congestion (or other reasons). It also removes the risk that empty hand- shaking messages used during connection setup might cause the port to report congestion earlier than it was supposed to. 3) The counter of the number of unacknowledged messages received by a port controlled by an internal TIPC service is now incremented only if the message is non-empty, in order to be consistent with the aforementioned changes. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Minor optimization to topology service connection establishmentAllan Stephens2011-02-23
| | | | | | | | | | Eliminates a local iovec structure containing no data, which was previously used during the establishment of a topology service connection, since the same effect can be achieved by passing in a NULL pointer and an iovec length of zero. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Set unused probe field of link protocol messages to defined valueAllan Stephens2011-02-23
| | | | | | | | | Ensures that a link reset or activate message has a "probe" field of zero. (This field is currently unused in these messages, but this could potentially change in future versions of TIPC.) Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Improve accuracy of link transmit queue maximum size statisticAllan Stephens2011-02-23
| | | | | | | | | | | | | Enhances TIPC's unicast and broadcast link code to update the transmit queue maximum size counter in a single place, namely the routine that adds messages to the queue. This ensures that the maximum size statistic reported for unicast links is completely accurate, rather than being partially based on statistical sampling. The changes to link.h are just documenting the roles of the variables. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Eliminate unnecessary locking when starting topology serviceAllan Stephens2011-02-23
| | | | | | | | | Modifies the initialization code for TIPC's topology service to avoid taking the spinlock protecting the subscriber list, since there is no need to do this. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Clean up tracking of node requesting a broadcast retransmitAllan Stephens2011-02-23
| | | | | | | | | | Allows the broadcast link to track the node that is requesting a retransmit in a new field dedicated to that purpose. This replaces the existing mechanism that (ab)uses an existing node structure linked list field to do the tracking. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Fix print statements that assume pointers are 32-bit valuesAllan Stephens2011-02-23
| | | | | | | | Corrects print statements that use %x to print pointer values to use %p instead, so that 64-bit pointer values are displayed correctly. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Improve handling of invalid link tolerance valuesAllan Stephens2011-02-23
| | | | | | | | | | | | | Enhances TIPC link code to ignore an invalid link tolerance value contained in an incoming LINK_PROTOCOL message, rather than processing the value and potentially causing a divide-by-zero error. Also add a compile-time check that catches attempts to redefine TIPC's minimum link tolerance value in a manner that might result in the same divide-by-zero error at run-time. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Prevent invalid memory access when sending to configuration serviceAllan Stephens2011-02-23
| | | | | | | | | | | Reject TIPC configuration service messages without a full message header. Previously, an application that sent a message to the configuration service that was too short could cause the validation code to access an uninitialized field in the msghdr structure, resulting in a memory access exception. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Remove unused global variable tipc_user_countAllan Stephens2011-02-23
| | | | | | | | | | Eliminates a global variable that was previously used by TIPC's user registry to track the number of distinct applications using TIPC. Due to the recent elimination of the user registry this variable no longer serves any purpose and can be removed. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Combine bearer structure with tipc_bearer structureAllan Stephens2011-02-23
| | | | | | | | | | | | | | | | Combines two distinct structures containing information about a TIPC bearer into a single structure. The structures were previously kept separate so that public information about a bearer could be made available to plug-in media types using TIPC's native API, while the remaining information was kept private for use by TIPC itself. However, now that the native API has been removed there is no longer any need for this arrangement. Since one of the structures was already embedded within the other, the change largely involves replacing instances of "publ.foo" with "foo". The changes do not otherwise alter the operation of TIPC bearers. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: Combine port structure with tipc_port structureAllan Stephens2011-02-23
| | | | | | | | | | | | | | | | | Merge two distinct structures containing information about a TIPC port into a single structure. The structures were previously kept separate so that public information about a port could be made available to applications using TIPC's native API, while the remaining information was kept private for use by TIPC itself. However, now that the native API has been removed there is no longer any need for this somewhat confusing arrangement. Since one of the structures was already embedded within the other, the change largely involves replacing instances of "publ.foo" with "foo". The changes do not otherwise alter the operation of TIPC ports. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* tipc: update log.h re-include protection to reflect new namePaul Gortmaker2011-01-01
| | | | | | | | The tipc/dbg.h file was recently renamed to tipc/log.h, but the re-include define was not updated accordingly. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tipc: remove extraneous braces from single statementsAllan Stephens2011-01-01
| | | | | | | | | | | | 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>
* tipc: remove zeroing assignments to static global variablesAllan Stephens2011-01-01
| | | | | | | | | | | | 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>
* tipc: split variable assignments out of conditional expressionsAllan Stephens2011-01-01
| | | | | | | | | | | | | Cleans up TIPC's source code to eliminate assigning values to variables within conditional expressions, improving code readability and reducing warnings from various code checker tools. 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>
* tipc: cleanup various cosmetic whitespace issuesAllan Stephens2011-01-01
| | | | | | | | | | | | | 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>
* tipc: recode getsockopt error handling for better readabilityPaul Gortmaker2011-01-01
| | | | | | | | | | The existing code for the copy to user and error handling at the end of getsockopt isn't easy to follow, due to the excessive use of if/else. By simply using return where appropriate, it can be made smaller and easier to follow at the same time. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tipc: remove pointless check for NULL prior to kfreeAllan Stephens2011-01-01
| | | | | | | | | 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>
* tipc: remove redundant #includesAllan Stephens2011-01-01
| | | | | | | | | 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>
* tipc: Finish streamlining of debugging codeAllan Stephens2011-01-01
| | | | | | | | | | | | | 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>
* tipc: Prune down link-specific debugging codeAllan Stephens2011-01-01
| | | | | | | | | | | | | | | Eliminates most link-specific debugging code in TIPC, which is now largely unnecessary. All calls to the link-specific debugging macros have been removed, as are the macros themselves; in addition, the optional allocation of print buffers to hold debugging information for each link endpoint has been removed. The ability for TIPC to print out helpful diagnostic information when link retransmit failures occur has been retained for the time being, as an aid in tracking down the cause of such failures. 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>
* tipc: remove dump() and tipc_dump_dbg()Allan Stephens2011-01-01
| | | | | | | | | Eliminates calls to two debugging macros that are being completely obsoleted, as well as any 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>
* tipc: remove calls to dbg() and msg_dbg()Allan Stephens2011-01-01
| | | | | | | | | 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>
* tipc: rename dbg.[ch] to log.[ch]Allan Stephens2011-01-01
| | | | | | | | | | As the first step in removing obsolete debugging code from TIPC the files that implement TIPC's non-debug-related log buffer subsystem are renamed to better reflect their true nature. 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>
* tipc: Remove internal linked list of node objectsAllan Stephens2011-01-01
| | | | | | | | | | Eliminates a sorted list TIPC uses to keep track of the neighboring nodes it has links to, since this duplicates information already present in the internal array of node object pointers. 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>
* tipc: Remove user registry subsystemAllan Stephens2011-01-01
| | | | | | | | | | | Eliminates routines, data structures, and files that make up TIPC's user registry. The user registry is no longer needed since the native API routines that utilized it no longer exist and there are no longer any internal TIPC services that use it. 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>
* tipc: Eliminate use of user registry by topology serviceAllan Stephens2011-01-01
| | | | | | | | | | Simplifies TIPC's network topology service so that it no longer registers its ports with the user registry, since the service doesn't take advantage of any of the registry's capabilities. 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>
* tipc: Eliminate use of user registry by configuration serviceAllan Stephens2011-01-01
| | | | | | | | | | Simplifies TIPC's configuration service so that it no longer registers its port with the user registry, since the service doesn't take advantage of any of the registry's capabilities. 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>
* tipc: Remove prototype code for supporting multiple clustersAllan Stephens2011-01-01
| | | | | | | | | | | 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>
* tipc: Remove prototype code for supporting inter-cluster routingAllan Stephens2011-01-01
| | | | | | | | | | | Eliminates routines and data structures that were intended to allow TIPC to route messages to other 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>
* tipc: Remove prototype code for supporting slave nodesAllan Stephens2011-01-01
| | | | | | | | | | | | | | | | | Simplifies routines and data structures that were intended to allow TIPC to support slave nodes (i.e. nodes that did not have links to all of the other nodes in its cluster, forcing TIPC to route messages that it could not deliver directly through a non-slave node). Currently, TIPC supports only networks containing non-slave nodes, so this code is unnecessary. Note: The latest edition of the TIPC 2.0 Specification has eliminated the concept of slave nodes entirely. 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>
* tipc: Remove prototype code for supporting multiple zonesAllan Stephens2011-01-01
| | | | | | | | | | | Eliminates routines, data structures, and files that were intended to allows TIPC to support a network containing multiple zones. 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>
* tipc: Delete tipc_ownidentity()Allan Stephens2010-12-02
| | | | | | | | | Moves the content of the native API routine tipc_ownidentity() into the sole routine that calls it, since it can no longer be called in isolation. 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>
* tipc: Eliminate obsolete native API forwarding routinesAllan Stephens2010-12-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | Moves the content of each native API message forwarding routine into the sole routine that calls it, since the forwarding routines no longer be called in isolation. Also removes code in each routine that altered the outgoing message's importance level since this is now no longer possible. The previous function mapping (parent function, and child API) was as follows: tipc_send2name \--tipc_forward2name tipc_send2port \--tipc_forward2port tipc_send_buf2port \--tipc_forward_buf2port After this commit, the children don't exist and their functionality is completely in the respective parent. 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>
* tipc: Eliminate an unused symbolic constant in link codeAllan Stephens2010-12-02
| | | | | | | | Removes a symbol that is not referenced anywhere by TIPC's link 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>
* tipc: Eliminate useless initialization when creating subscriberAllan Stephens2010-12-02
| | | | | | | | | Removes initialization of a local variable that is always assigned a different value before it is referenced. 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>
* tipc: Remove unused domain argument from multicast send routineAllan Stephens2010-12-02
| | | | | | | | | Eliminates an unused argument from tipc_multicast(), now that this routine can no longer be called by kernel-based applications. 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>
* tipc: Remove support for TIPC mode change callbackAllan Stephens2010-12-02
| | | | | | | | | | | Eliminates support for the callback routine invoked when TIPC changes its mode of operation from inactive to standalone or from standalone to networked. This callback was part of TIPC's obsolete native API and is not used by TIPC internally. 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>
* tipc: Delete useless function prototypesAllan Stephens2010-12-02
| | | | | | | | | | | Removes several function declarations that aren't used anywhere, either because they reference routines that no longer exist or because all users of the function reference it after it has already been defined. 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>
* tipc: Eliminate useless return value when disabling a bearerAllan Stephens2010-12-02
| | | | | | | | | Modifies bearer_disable() to return void since it always indicates success anyway. 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>
* tipc: Delete unused configuration service structure definitionAllan Stephens2010-12-02
| | | | | | | | | Removes a structure definition that is no longer used by TIPC's configuration service. 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>
* tipc: Remove obsolete inclusions of header filesAllan Stephens2010-12-02
| | | | | | | | | | 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>
* tipc: Remove obsolete native API files and exportsAllan Stephens2010-12-02
| | | | | | | | | | | | | | | | | As part of the removal of TIPC's native API support it is no longer necessary for TIPC to export symbols for routines that can be called by kernel-based applications, nor for it to have header files that kernel-based applications can include to access the declarations for those routines. This commit eliminates the exporting of symbols by TIPC and migrates the contents of each obsolete native API include file into its corresponding non-native API equivalent. The code which was migrated in this commit was migrated intact, in that there are no technical changes combined with the relocation. 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>
* net: tipc: fix information leak to userlandKulikov Vasiliy2010-11-09
| | | | | | | | | Structure sockaddr_tipc is copied to userland with padding bytes after "id" field in union field "name" unitialized. It leads to leaking of contents of kernel stack memory. We have to initialize them to zero. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2010-10-21
|\ | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/core/dev.c
| * Revert d88dca79d3852a3623f606f781e013d61486828aNeil Horman2010-10-21
| | | | | | | | | | | | | | | | | | | | | | TIPC needs to have its endianess issues fixed. Unfortunately, the format of a subscriber message is passed in directly from user space, so requiring this message to be in network byte order breaks user space ABI. Revert this change until such time as we can determine how to do this in a backwards compatible manner. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Revert c6537d6742985da1fbf12ae26cde6a096fd35b5cNeil Horman2010-10-21
| | | | | | | | | | | | | | | | | | | | | | Backout the tipc changes to the flags int he subscription message. These changees, while reasonable on the surface, interefere with user space ABI compatibility which is a no-no. This was part of the changes to fix the endianess issues in the TIPC protocol, which would be really nice to do but we need to do so in a way that is backwards compatible with user space. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>