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* Fix sctp compileChristian Borntraeger2007-10-23
| | | | | | | | | | | | | | sctp fails to compile with net/sctp/sm_make_chunk.c: In function 'sctp_pack_cookie': net/sctp/sm_make_chunk.c:1516: error: implicit declaration of function 'sg_init_table' net/sctp/sm_make_chunk.c:1517: error: implicit declaration of function 'sg_set_page' use the proper include file. SCTP maintainers Vlad Yasevich and Sridhar Samudrala are CCed. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Update net/ to use sg helpersJens Axboe2007-10-22
| | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Remove "unsafe" from module structRusty Russell2007-10-17
| | | | | | | | | | | | | | | | | | | | Adrian Bunk points out that "unsafe" was used to mark modules touched by the deprecated MOD_INC_USE_COUNT interface, which has long gone. It's time to remove the member from the module structure, as well. If you want a module which can't unload, don't register an exit function. (Vlad Yasevich says SCTP is now safe to unload, so just remove the __unsafe there). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Shannon Nelson <shannon.nelson@intel.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com> Cc: Sridhar Samudrala <sri@us.ibm.com> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IPV6]: Replace sk_buff ** with sk_buff * in input handlersHerbert Xu2007-10-15
| | | | | | | | | With all the users of the double pointers removed from the IPv6 input path, this patch converts all occurances of sk_buff ** to sk_buff * in IPv6 input handlers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* fix breakage in sctp getsockoptAl Viro2007-10-14
| | | | | | | copy_to_user() into on-stack array Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [INET]: local port range robustnessStephen Hemminger2007-10-10
| | | | | | | | | | | | | | | Expansion of original idea from Denis V. Lunev <den@openvz.org> Add robustness and locking to the local_port_range sysctl. 1. Enforce that low < high when setting. 2. Use seqlock to ensure atomic update. The locking might seem like overkill, but there are cases where sysadmin might want to change value in the middle of a DoS attack. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: port randomizationStephen Hemminger2007-10-10
| | | | | | | | | | | Add port randomization rather than a simple fixed rover for use with SCTP. This makes it act similar to TCP, UDP, DCCP when allocating ports. No longer need port_alloc_lock as well (suggestion by Brian Haley). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Tie ADD-IP and AUTH functionality as required by spec.Vlad Yasevich2007-10-10
| | | | | | | | | ADD-IP spec requires AUTH. It is, in fact, dangerous without AUTH. So, disable ADD-IP functionality if the peer claims to support ADD-IP, but not AUTH. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: API updates to suport SCTP-AUTH extensions.Vlad Yasevich2007-10-10
| | | | | | | | | | Add SCTP-AUTH API. The API implemented here was agreed to between implementors at the 9th SCTP Interop. It will be documented in the next revision of the SCTP socket API spec. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Implement the receive and verification of AUTH chunkVlad Yasevich2007-10-10
| | | | | | | | | This patch implements the receive path needed to process authenticated chunks. Add ability to process the AUTH chunk and handle edge cases for authenticated COOKIE-ECHO as well. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Enable the sending of the AUTH chunk.Vlad Yasevich2007-10-10
| | | | | | | | | | | | | | | | | | | | | SCTP-AUTH, Section 6.2: Endpoints MUST send all requested chunks authenticated where this has been requested by the peer. The other chunks MAY be sent authenticated or not. If endpoint pair shared keys are used, one of them MUST be selected for authentication. To send chunks in an authenticated way, the sender MUST include these chunks after an AUTH chunk. This means that a sender MUST bundle chunks in order to authenticate them. If the endpoint has no endpoint pair shared key for the peer, it MUST use Shared Key Identifier 0 with an empty endpoint pair shared key. If there are multiple endpoint shared keys the sender selects one and uses the corresponding Shared Key Identifier Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Implete SCTP-AUTH parameter processingVlad Yasevich2007-10-10
| | | | | | | | | | | | Implement processing for the CHUNKS, RANDOM, and HMAC parameters and deal with how this parameters are effected by association restarts. In particular, during unexpeted INIT processing, we need to reply with parameters from the original INIT chunk. Also, after restart, we need to update the old association with new peer parameters and change the association shared keys. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Implement SCTP-AUTH initializations.Vlad Yasevich2007-10-10
| | | | | | | | The patch initializes AUTH related members of the generic SCTP structures and provides a way to enable/disable auth extension. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Implement SCTP-AUTH internalsVlad Yasevich2007-10-10
| | | | | | | | | This patch implements the internals operations of the AUTH, such as key computation and storage. It also adds necessary variables to the SCTP data structures. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Move sysctl_sctp_[rw]mem definitions to protocol.cVlad Yasevich2007-10-10
| | | | | | | | | The sctp_[rw]mem definitions should really be in protocol.c since that is where they are initialized. This also allows one to build a kernel without sysctl support. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Implement the Supported Extensions ParameterVlad Yasevich2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | SCTP Supported Extenions parameter is specified in Section 4.2.7 of the ADD-IP draft (soon to be RFC). The parameter is encoded as: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Parameter Type = 0x8008 | Parameter Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | CHUNK TYPE 1 | CHUNK TYPE 2 | CHUNK TYPE 3 | CHUNK TYPE 4 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | .... | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | CHUNK TYPE N | PAD | PAD | PAD | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ It contains a list of chunks that a particular SCTP extension uses. Current extensions supported are Partial Reliability (FWD-TSN) and ADD-IP (ASCONF and ASCONF-ACK). When implementing new extensions (AUTH, PKT-DROP, etc..), new chunks need to be added to this parameter. Parameter processing would be modified to negotiate support for these new features. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP] net/sctp/socket.c: make 3 variables staticAdrian Bunk2007-10-10
| | | | | | | | | | This patch makes the following needlessly global variables static: - sctp_memory_pressure - sctp_memory_allocated - sctp_sockets_allocated Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Make sctp_addto_param() static.Adrian Bunk2007-10-10
| | | | | | | sctp_addto_param() can become static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make the device list and device lookups per namespace.Eric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes most of the generic device layer network namespace safe. This patch makes dev_base_head a network namespace variable, and then it picks up a few associated variables. The functions: dev_getbyhwaddr dev_getfirsthwbytype dev_get_by_flags dev_get_by_name __dev_get_by_name dev_get_by_index __dev_get_by_index dev_ioctl dev_ethtool dev_load wireless_process_ioctl were modified to take a network namespace argument, and deal with it. vlan_ioctl_set and brioctl_set were modified so their hooks will receive a network namespace argument. So basically anthing in the core of the network stack that was affected to by the change of dev_base was modified to handle multiple network namespaces. The rest of the network stack was simply modified to explicitly use &init_net the initial network namespace. This can be fixed when those components of the network stack are modified to handle multiple network namespaces. For now the ifindex generator is left global. Fundametally ifindex numbers are per namespace, or else we will have corner case problems with migration when we get that far. At the same time there are assumptions in the network stack that the ifindex of a network device won't change. Making the ifindex number global seems a good compromise until the network stack can cope with ifindex changes when you change namespaces, and the like. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make socket creation namespace safe.Eric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | This patch passes in the namespace a new socket should be created in and has the socket code do the appropriate reference counting. By virtue of this all socket create methods are touched. In addition the socket create methods are modified so that they will fail if you attempt to create a socket in a non-default network namespace. Failing if we attempt to create a socket outside of the default network namespace ensures that as we incrementally make the network stack network namespace aware we will not export functionality that someone has not audited and made certain is network namespace safe. Allowing us to partially enable network namespaces before all of the exotic protocols are supported. Any protocol layers I have missed will fail to compile because I now pass an extra parameter into the socket creation code. [ Integrated AF_IUCV build fixes from Andrew Morton... -DaveM ] Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make /proc/net per network namespaceEric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | This patch makes /proc/net per network namespace. It modifies the global variables proc_net and proc_net_stat to be per network namespace. The proc_net file helpers are modified to take a network namespace argument, and all of their callers are fixed to pass &init_net for that argument. This ensures that all of the /proc/net files are only visible and usable in the initial network namespace until the code behind them has been updated to be handle multiple network namespaces. Making /proc/net per namespace is necessary as at least some files in /proc/net depend upon the set of network devices which is per network namespace, and even more files in /proc/net have contents that are relevant to a single network namespace. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: Add v4mapped address inlineBrian Haley2007-10-10
| | | | | | | Add v4mapped address inline to avoid calls to ipv6_addr_type(). Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Rewrite of sctp buffer management codeNeil Horman2007-10-10
| | | | | | | | | | | | | This patch introduces autotuning to the sctp buffer management code similar to the TCP. The buffer space can be grown if the advertised receive window still has room. This might happen if small message sizes are used, which is common in telecom environmens. New tunables are introduced that provide limits to buffer growth and memory pressure is entered if to much buffer spaces is used. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* fix sctp_del_bind_addr() last argument typeAl Viro2007-09-26
| | | | | | | | It gets pointer to fastcall function, expects a pointer to normal one and calls the sucker. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SCTP : Add paramters validity check for ASCONF chunkWei Yongjun2007-09-26
| | | | | | | | | | | | | If ADDIP is enabled, when an ASCONF chunk is received with ASCONF paramter length set to zero, this will cause infinite loop. By the way, if an malformed ASCONF chunk is received, will cause processing to access memory without verifying. This is because of not check the validity of parameters in ASCONF chunk. This patch fixed this. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Discard OOTB packetes with bundled INIT early.Vlad Yasevich2007-09-26
| | | | | | | | | | | | | | | RFC 4460 and future RFC 4960 (2960-bis) specify that packets with bundled INIT chunks need to be dropped. We currenlty do that only after processing any leading chunks. For OOTB chunks, since we already walk the entire packet, we should discard packets with bundled INITs. There are other chunks chunks that MUST NOT be bundled, but the spec is silent on theire treatment. Thus, we'll leave their teatment alone for the moment. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Acked-by: Wei Yongjun <yjwei@cn.fujitsu.com>
* SCTP: Clean up OOTB handling and fix infinite loop processingVlad Yasevich2007-09-26
| | | | | | | | | | | While processing OOTB chunks as well as chunks with an invalid length of 0, it was possible to SCTP to get wedged inside an infinite loop because we didn't catch the condition correctly, or didn't mark the packet for discard correctly. This work is based on original findings and work by Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Explicitely discard OOTB chunksVlad Yasevich2007-09-26
| | | | | | | | | | | Explicitely discard OOTB chunks, whether the result is a SHUTDOWN COMPLETE or an ABORT. We need to discard the OOTB SHUTDOWN ACK to prevent bombing attackes since responsed MUST NOT be bundled. We also explicietely discard in the ABORT case since that function is widely used internally. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Acked-by: Neil Horman <nhorman@tuxdriver.com>
* SCTP: Send ABORT chunk with correct tag in response to INIT ACKWei Yongjun2007-09-26
| | | | | | | | | | | | When SCTP client received an INIT ACK chunk with missing mandatory parameter such as "cookie parameter", it will send back a ABORT with T-bit not set and verification tag is set to 0. This is because before we accept this INIT ACK chunk, we do not know the peer's tag. This patch change to reflect vtag when responding to INIT ACK with missing mandatory parameter. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Validate buffer room when processing sequential chunksVlad Yasevich2007-09-26
| | | | | | | | | | When we process bundled chunks, we need to make sure that the skb has the buffer for each header since we assume it's always there. Some malicious node can send us something like DATA + 2 bytes and we'll try to walk off the end refrencing potentially uninitialized memory. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* [SCTP]: Convert bind_addr_list locking to RCUVlad Yasevich2007-09-16
| | | | | | | | | | | | | | | | | | | | | Since the sctp_sockaddr_entry is now RCU enabled as part of the patch to synchronize sctp_localaddr_list, it makes sense to change all handling of these entries to RCU. This includes the sctp_bind_addrs structure and it's list of bound addresses. This list is currently protected by an external rw_lock and that looks like an overkill. There are only 2 writers to the list: bind()/bindx() calls, and BH processing of ASCONF-ACK chunks. These are already seriealized via the socket lock, so they will not step on each other. These are also relatively rare, so we should be good with RCU. The readers are varied and they are easily converted to RCU. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Sridhar Samdurala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SCTP]: Add RCU synchronization around sctp_localaddr_listVlad Yasevich2007-09-16
| | | | | | | | | | | | | sctp_localaddr_list is modified dynamically via NETDEV_UP and NETDEV_DOWN events, but there is not synchronization between writer (even handler) and readers. As a result, the readers can access an entry that has been freed and crash the sytem. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Sridhar Samdurala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* SCTP: Fix to handle invalid parameter length correctlyWei Yongjun2007-08-30
| | | | | | | | | | | | If an INIT with invalid parameter length look like this: Parameter Type : 1 Parameter Length: 800 and not contain any payload, SCTP will ignore this parameter and send back a INIT-ACK. This patch is fix to handle this invalid parameter length correctly. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Abort on COOKIE-ECHO if backlog is exceeded.Vlad Yasevich2007-08-30
| | | | | | | | | Currently we abort on the INIT chunk we our backlog is currenlty exceeded. Delay this about untill COOKIE-ECHO to give the user time to accept the socket. Also, make sure that we treat sk_max_backlog of 0 as no connections allowed. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Correctly disable listening when backlog is 0.Vlad Yasevich2007-08-30
| | | | Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Do not retransmit chunks that are newer then rtt.Vlad Yasevich2007-08-30
| | | | | | | | | When performing a retransmit, do not include the chunk if it was sent less then 1 rtt ago. The reason is that we may receive the SACK very soon and wouldn't retransmit. Suggested by Randy Stewart. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Uncomfirmed transports can't become InactiveVlad Yasevich2007-08-30
| | | | | | | | | Do not set Unconfirmed transports to Inactive state. This may result in an inactive association being destroyed since we start counting errors on "inactive" transports against the association. This was found at the SCTP interop event. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Pick the correct port when binding to 0.Vlad Yasevich2007-08-30
| | | | | | | | | sctp_bindx() allows the use of unspecified port. The problem is that every address we bind to ends up selecting a new port if the user specified port 0. This patch allows re-use of the already selected port when the port from bindx was 0. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Use net_ratelimit to suppress error messages print too fastWei Yongjun2007-08-30
| | | | | | | | | | | | | When multi bundling SHUTDOWN-ACK message is received in ESTAB state, this will cause "sctp protocol violation state" message print many times. If SHUTDOWN-ACK is bundled 300 times in one packet, message will be print 300 times. The same problem also exists when received unexpected HEARTBEAT-ACK message which is bundled message times. This patch used net_ratelimit() to suppress error messages print too fast. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Fix to encode PROTOCOL VIOLATION error cause correctlyWei Yongjun2007-08-30
| | | | | | | | | | | | | | | | | | | | | | | | | | PROTOCOL VIOLATION error cause in ABORT is bad encode when make abort chunk. When SCTP encode ABORT chunk with PROTOCOL VIOLATION error cause, it just add the error messages to PROTOCOL VIOLATION error cause, the rest four bytes(struct sctp_paramhdr) is just add to the chunk, not change the length of error cause. This cause the ABORT chunk to be a bad format. The chunk is like this: ABORT chunk Chunk type: ABORT (6) Chunk flags: 0x00 Chunk length: 72 (*1) Protocol violation cause Cause code: Protocol violation (0x000d) Cause length: 62 (*2) Cause information: 5468652063756D756C61746976652074736E2061636B2062... Cause padding: 0000 [Needless] 00030010 Chunk Length(*1) = 72 but Cause length(*2) only 62, not include the extend 4 bytes. ((72 - sizeof(chunk_hdr)) = 68) != (62 +3) / 4 * 4 Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Fix sctp_addto_chunk() to add pad with correct lengthWei Yongjun2007-08-30
| | | | | | | | | At function sctp_addto_chunk(), it do pad before add payload to chunk if chunk length is not 4-byte alignment. But it do pad with a bad length. This patch fixed this probleam. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: Assign stream sequence numbers to the entire messageVlad Yasevich2007-08-29
| | | | | | | | | | | | | Currently we only assign the sequence number to a packet that we are about to transmit. This however breaks the Partial Reliability extensions, because it's possible for us to never transmit a packet, i.e. it expires before we get to send it. In such cases, if the message contained multiple SCTP fragments, and we did manage to send the first part of the message, the Stream sequence numbers would get into invalid state and cause receiver to stall. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: properly clean up fragment and ordering queues during FWD-TSN.Vlad Yasevich2007-08-29
| | | | | | | | | When we recieve a FWD-TSN (meaning the peer has abandoned the data), we need to clean up any partially received messages that may be hanging out on the re-assembly or re-ordering queues. This is a MUST requirement that was not properly done before. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com.>
* SCTP: remove useless code in function sctp_init_causeWei Yongjun2007-08-02
| | | | | | | | Some code in function sctp_init_cause() seem useless, this patch remove them. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: drop SACK if ctsn is not less than the next tsn of assocWei Yongjun2007-08-02
| | | | | | | | | | | | | | | | | | | | | We need to drop the SACK if the peer is attempting to acknowledge unset data, i.e. the CTSN in the SACK is greater or equal to the next TSN we will send. Example: Endpoint A Endpoint B <--------------- DATA (TSN=1) SACK(TSN=1) ---------------> <--------------- DATA (TSN=2) <--------------- DATA (TSN=3) <--------------- DATA (TSN=4) <--------------- DATA (TSN=5) SACK(TSN=1000) ---------------> <--------------- DATA (TSN=6) <--------------- DATA (TSN=7) Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: IPv4 mapped addr not returned in SCTPv6 accept()Vlad Yasevich2007-08-01
| | | | | | | | When issuing a connect call on an AF_INET6 sctp socket with a IPv4-mapped destination, the peer address that is returned by getpeeraddr() should be v4-mapped as well. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* SCTP: IPv4 mapped addr not returned in SCTPv6 accept()Dave Johnson2007-08-01
| | | | | | | | | | | | | | An accept() call on a SCTPv6 socket that returns due to connection of a IPv4 mapped peer will fill out the 'struct sockaddr' with a zero IPv6 address instead of the IPv4 mapped address of the peer. This is due to the v4mapped flag not getting copied into the new socket on accept() as well as a missing check for INET6 socket type in sctp_v4_to_sk_*addr(). Signed-off-by: Dave Johnson <djohnson@sw.starentnetworks.com> Cc: Srinivas Akkipeddi <sakkiped@starentnetworks.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: fix shadow symbol in net/sctp/tsnmap.cSebastian Siewior2007-08-01
| | | | | | | | | | net/sctp/tsnmap.c:164:16: warning: symbol '_end' shadows an earlier one include/asm-generic/sections.h:13:13: originally declared here Renamed renamed _end to end_ and _start (for consistence). Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: try to fix readlockSebastian Siewior2007-08-01
| | | | | | | unlock the reader lock in error case. Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
* sctp: remove shadowed symbolssebastian@breakpoint.cc2007-08-01
| | | | | | | | | | | Fixes the following sparse warnings: net/sctp/sm_make_chunk.c:1457:9: warning: symbol 'len' shadows an earlier one net/sctp/sm_make_chunk.c:1356:23: originally declared here net/sctp/socket.c:1534:22: warning: symbol 'chunk' shadows an earlier one net/sctp/socket.c:1387:20: originally declared here Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
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