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2015-03-29tipc: fix two bugs in secondary destination lookupJon Paul Maloy1-0/+1
A message sent to a node after a successful name table lookup may still find that the destination socket has disappeared, because distribution of name table updates is non-atomic. If so, the message will be rejected back to the sender with error code TIPC_ERR_NO_PORT. If the source socket of the message has disappeared in the meantime, the message should be dropped. However, in the currrent code, the message will instead be subject to an unwanted tertiary lookup, because the function tipc_msg_lookup_dest() doesn't check if there is an error code present in the message before performing the lookup. In the worst case, the message may now find the old destination again, and be redirected once more, instead of being dropped directly as it should be. A second bug in this function is that the "prev_node" field in the message is not updated after successful lookup, something that may have unpredictable consequences. The problems arising from those bugs occur very infrequently. The third change in this function; the test on msg_reroute_msg_cnt() is purely cosmetic, reflecting that the returned value never can be negative. This commit corrects the two bugs described above. Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-13tipc: make tipc node address support net namespaceYing Xue1-38/+6
If net namespace is supported in tipc, each namespace will be treated as a separate tipc node. Therefore, every namespace must own its private tipc node address. This means the "tipc_own_addr" global variable of node address must be moved to tipc_net structure to satisfy the requirement. It's turned out that users also can assign node address for every namespace. Signed-off-by: Ying Xue <ying.xue@windriver.com> Tested-by: Tero Aho <Tero.Aho@coriant.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-13tipc: make tipc broadcast link support net namespaceYing Xue1-0/+3
TIPC broadcast link is statically established and its relevant states are maintained with the global variables: "bcbearer", "bclink" and "bcl". Allowing different namespace to own different broadcast link instances, these variables must be moved to tipc_net structure and broadcast link instances would be allocated and initialized when namespace is created. Signed-off-by: Ying Xue <ying.xue@windriver.com> Tested-by: Tero Aho <Tero.Aho@coriant.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-13tipc: make tipc node table aware of net namespaceYing Xue1-0/+2
Global variables associated with node table are below: - node table list (node_htable) - node hash table list (tipc_node_list) - node table lock (node_list_lock) - node number counter (tipc_num_nodes) - node link number counter (tipc_num_links) To make node table support namespace, above global variables must be moved to tipc_net structure in order to keep secret for different namespaces. As a consequence, these variables are allocated and initialized when namespace is created, and deallocated when namespace is destroyed. After the change, functions associated with these variables have to utilize a namespace pointer to access them. So adding namespace pointer as a parameter of these functions is the major change made in the commit. Signed-off-by: Ying Xue <ying.xue@windriver.com> Tested-by: Tero Aho <Tero.Aho@coriant.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-13tipc: cleanup core.c and core.h filesYing Xue1-2/+0
Only the works of initializing and shutting down tipc module are done in core.h and core.c files, so all stuffs which are not closely associated with the two tasks should be moved to appropriate places. Signed-off-by: Ying Xue <ying.xue@windriver.com> Tested-by: Tero Aho <Tero.Aho@coriant.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-14tipc: explicitly include core.h in addr.hAndreas Bofjäll1-0/+2
The inline functions in addr.h uses tipc_own_addr which is exported by core.h, but addr.h never actually includes it. It works because it is explicitly included where this is used, but it looks a bit strange. Include core.h in addr.h explicitly to make the dependency clearer. Signed-off-by: Andreas Bofjäll <andreas.bofjall@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-30tipc: compress out gratuitous extra carriage returnsPaul Gortmaker1-3/+0
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>
2012-04-19tipc: Add routines for safe checking of node's network addressAllan Stephens1-1/+19
Introduces routines that test whether a given network address is equal to a node's own network address or if it lies within the node's own network cluster, and which work properly regardless of whether the node is using the default network address <0.0.0> or a non-zero network address that is assigned later on. In essence, these routines ensure that address <0.0.0> is treated as an alias for "this node", regardless of which network address the node is actually using. Old users of the pre-existing more strict match in_own_cluster() have been accordingly redirected to what is now called in_own_cluster_exact() --- which does not extend matching to <0,0,0>. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-05-11tipc: make zone/cluster mask constants a definePaul Gortmaker1-2/+5
This allows them to be available for easy re-use in other places and avoids trivial mistakes caused by "count the f's and 0's". Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-03-13tipc: Add network address mask helper routinesAllan Stephens1-4/+13
Introduces a pair of helper routines that convert the network address for a TIPC node into the network address for its cluster or zone. This is a cosmetic change designed to avoid future errors caused by the incorrect use of address bitmasks, and does not alter the existing operation of TIPC. Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-01-02tipc: Remove prototype code for supporting inter-cluster routingAllan Stephens1-15/+0
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>
2011-01-02tipc: Remove prototype code for supporting slave nodesAllan Stephens1-10/+0
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>
2010-05-13tipc: Reduce footprint by un-inlining address routinesAllan Stephens1-34/+3
Convert address-related inline routines that are more than one line into standard functions, thereby eliminating a significant amount of 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>
2010-05-13tipc: add tipc_ prefix to fcns targeted for un-inliningAllan Stephens1-4/+4
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>
2008-02-08[TIPC]: Kill unused static inline (x5)Ilpo Järvinen1-5/+0
All these static inlines are unused: in_own_zone 1 (net/tipc/addr.h) msg_dataoctet 1 (net/tipc/msg.h) msg_direct 1 (include/net/tipc/tipc_msg.h) msg_options 1 (include/net/tipc/tipc_msg.h) tipc_nmap_get 1 (net/tipc/bcast.h) Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-11[NET] TIPC: Fix whitespace errors.YOSHIFUJI Hideaki1-3/+3
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-18[TIPC] Avoid polluting the global namespacePer Liden1-2/+2
This patch adds a tipc_ prefix to all externally visible symbols. Signed-off-by: Per Liden <per.liden@ericsson.com>
2006-01-13[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>
2006-01-13[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>
2006-01-13[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>
2006-01-13[TIPC] Initial mergePer Liden1-0/+125
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>