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* [DCCP]: Always use debug-toggle parametersGerrit Renker2007-04-251-4/+0
| | | | | | | | | | | | | | | | | Currently debugging output (when configured) is automatically enabled when DCCP modules are compiled into the kernel rather than built as loadable modules. This is not necessary, since the module parameters in this case become kernel commandline parameters, e.g. DCCP or CCID3 debug output can be enabled for a static build by appending the following at the boot prompt: dccp.dccp_debug=1 dccp_ccid3.ccid3_debug=1 This patch therefore does away with the more complicated way of always enabling debug output for static builds Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Fix for follows48Gerrit Renker2007-04-251-3/+1
| | | | | | | | | | | | | | | | | The follows48 relation identifies whether 48-bit sequence number x is the direct successor of y. Currently, it does not handle cases of the following type correctly: follows48(0x(prefix)10000LL, 0x(prefix)0FFFFLL) where prefix is an arbitrary hex sequence of up to 7 digits. This is fixed by reusing the new dccp_delta_seqno function. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Make `before' relation unambiguousGerrit Renker2007-04-251-5/+2
| | | | Problem:
* [DCCP]: Make dccp_delta_seqno return signed numbersGerrit Renker2007-04-251-2/+5
| | | | Problem:
* [DCCP]: 48-bit sequence number arithmeticGerrit Renker2007-04-251-20/+27
| | | | | | | | | | | | | | | | | This patch * organizes the sequence arithmetic functions into one corner of dccp.h * performs a small modification of dccp_set_seqno to make it more widely reusable (now it is safe to use any number, since it performs modulo-2^48 assignment) * adds functions and generic macros for 48-bit sequence arithmetic: --48 bit complement --modulo-48 addition and modulo-48 subtraction --dccp_inc_seqno now a special case of add48 Constants renamed following a suggestion by Arnaldo. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: make dccp_write_xmit_timer() static againAdrian Bunk2007-03-251-1/+0
| | | | | | | dccp_write_xmit_timer() needlessly became global. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Initialise write_xmit_timer also on passive socketsGerrit Renker2007-03-091-0/+1
| | | | | | | | | | | | | | | | | | The TX CCID needs the write_xmit_timer for delaying packet sends. Previously this timer was only activated on active (connecting) sockets. This patch initialises the write_xmit_timer in sync with the other timers, i.e. the timer will be ready on any socket. This is used by applications with a listening socket which start to stream after receiving an initiation by the client. The write_xmit_timer is stopped when the application closes, as before. Was tested to work and to remove the timer bug reported on dccp@vger. Also moved timer initialisation into timer.c (static). Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] DCCP: Fix whitespace errors.YOSHIFUJI Hideaki2007-02-101-4/+4
| | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Debug timeval operationsGerrit Renker2006-12-111-0/+1
| | | | | | | | | | | | | | | | | | | | Problem: Most target types in the CCID3 code are u32, so subtle conversion errors can occur if signed time calculations yield negative results: the original values are lost in the conversion to unsigned, calculation errors go undetected. This patch therefore * sets all critical time types from unsigned to suseconds_t * avoids comparison between signed/unsigned via type-casting * provides ample warning messages in case time calculations are negative These warning messages can be removed at a later stage when the code has undergone more testing. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: Remove timeo from output.cIan McDonald2006-12-111-2/+0
| | | | | | | | | | | | | | It simplifies waiting for the CCID module to signal that a packet is ready to be sent. Other simplifications flow on from this such as removing constants. As a result of this EAGAIN is not returned any more by dccp_wait_for_ccid (which would otherwise lead to unnecessarily discarding the packet in dccp_write_xmit). Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: Simplified conditions due to use of enum:8 statesGerrit Renker2006-12-021-6/+11
| | | | | | | | | | | | | | | | | | | | | | This reaps the benefit of the earlier patch, which changed the type of CCID 3 states to use enums, in that many conditions are now simplified and the number of possible (unexpected) values is greatly reduced. In a few instances, this also allowed to simplify pre-conditions; where care has been taken to retain logical equivalence. [DCCP]: Introduce a consistent BUG/WARN message scheme This refines the existing set of DCCP messages so that * BUG(), BUG_ON(), WARN_ON() have meaningful DCCP-specific counterparts * DCCP_CRIT (for severe warnings) is not rate-limited * DCCP_WARN() is introduced as rate-limited wrapper Using these allows a faster and cleaner transition to their original counterparts once the code has matured into a full DCCP implementation. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: Set TX Queue Length Bounds via SysctlIan McDonald2006-12-021-0/+1
| | | | | | | | | | | | | | Previously the transmit queue was unbounded. This patch: * puts a limit on transmit queue length and sends back EAGAIN if the buffer is full * sets the TX queue length to a sensible default * implements tx buffer sysctls for DCCP Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: enable debug messages also for static buildsGerrit Renker2006-12-021-7/+12
| | | | | | | | | | | This patch * makes debugging (when configured) work both for static / module build * provides generic debugging macros for use in other DCCP / CCID modules * adds missing information about debug parameters to Kconfig * performs some code tidy-up Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: Introduce DCCP_{BUG{_ON},CRIT} macros, use enum:8 for the ccid3 statesGerrit Renker2006-12-021-0/+8
| | | | | | | | | | | This patch tackles the following problem: * the ccid3_hc_{t,r}x_sock define ccid3hc{t,r}x_state as `u8', but in reality there can only be a few, pre-defined enum names * this necessitates addiditional checking for unexpected values which would otherwise be caught by the compiler Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: Introduce a consistent naming scheme for sysctlsGerrit Renker2006-12-021-6/+6
| | | | | | | | | | | | | | In order to make their function clearer and obtain a consistent naming scheme to identify sysctls, all existing DCCP sysctls have been prefixed with `sysctl_dccp', following the same convention as used by TCP. Feature-specific sysctls retain the `feat' in the middle, although the `default' has been dropped, since it is obvious from use. Also removed a duplicate `dccp_feat_default_sequence_window' in ipv4.c. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: Add sysctls to control retransmission behaviourGerrit Renker2006-12-021-0/+11
| | | | | | | | | | | | | | | | | | | | This adds 3 sysctls which govern the retransmission behaviour of DCCP control packets (3way handshake, feature negotiation). It removes 4 FIXMEs from the code. The close resemblance of sysctl variables to their TCP analogues is emphasised not only by their name, but also by giving them the same initial values. This is useful since there is not much practical experience with DCCP yet. Furthermore, with regard to the previous patch, it is now possible to limit the number of keepalive-Responses by setting net.dccp.default.request_retries (also a bit like in TCP). Lastly, added documentation of all existing DCCP sysctls. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: Support for partial checksums (RFC 4340, sec. 9.2)Gerrit Renker2006-12-021-5/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch does the following: a) introduces variable-length checksums as specified in [RFC 4340, sec. 9.2] b) provides necessary socket options and documentation as to how to use them c) basic support and infrastructure for the Minimum Checksum Coverage feature [RFC 4340, sec. 9.2.1]: acceptability tests, user notification and user interface In addition, it (1) fixes two bugs in the DCCPv4 checksum computation: * pseudo-header used checksum_len instead of skb->len * incorrect checksum coverage calculation based on dccph_x (2) removes dccp_v4_verify_checksum() since it reduplicates code of the checksum computation; code calling this function is updated accordingly. (3) now uses skb_checksum(), which is safer than checksum_partial() if the sk_buff has is a non-linear buffer (has pages attached to it). (4) fixes an outstanding TODO item: * If P.CsCov is too large for the packet size, drop packet and return. The code has been tested with applications, the latest version of tcpdump now comes with support for partial DCCP checksums. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: tidy up dccp_v{4,6}_conn_requestGerrit Renker2006-12-021-12/+1
| | | | | | | This is a code simplification to remove reduplicated code by concentrating and abstracting shared code. Detailed Changes:
* [DCCP]: Fix logfile overflowIan McDonald2006-12-021-0/+2
| | | | | | | | | | | | This patch fixes data being spewed into the logs continually. As the code stood if there was a large queue and long delays timeo would go down to zero and never get reset. This fixes it by resetting timeo. Put constant into header as well. Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: calling dccp_v{4,6}_reqsk_send_ack is a BUGGerrit Renker2006-12-021-0/+2
| | | | | | | | | | This patch removes two functions, the send_ack functions of request_sock, which are not called/used by the DCCP code. It is correct that these functions are not called, below is a justification why calling these functions (on a passive socket in the LISTEN/RESPOND state) would mean a DCCP protocol violation. A) Background: using request_sock in TCP:
* [DCCP] timewait: Remove leftover extern declarationsArnaldo Carvalho de Melo2006-12-021-2/+0
| | | | | | | | | Gerrit Renker noticed dccp_tw_deschedule and submitted a patch with a FIXME, but as he suggests in the same patch the best thing is to just ditch this declaration, while doing that also noticed that tcp_tw_count is as well not defined anywhere, so ditch it too. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: set safe upper bound for option lengthGerrit Renker2006-12-021-6/+12
| | | | | | | | | | | This is a re-send from http://www.mail-archive.com/dccp@vger.kernel.org/msg00553.html It is the same patch as before, but I have built in Arnaldo's suggestions pointed out in that posting. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: Update documentation references.Gerrit Renker2006-10-241-1/+1
| | | | | | | | | | | | | | | | | | Updates the references to spec documents throughout the code, taking into account that * the DCCP, CCID 2, and CCID 3 drafts all became RFCs in March this year * RFC 1063 was obsoleted by RFC 1191 * draft-ietf-tcpimpl-pmtud-0x.txt was published as an Informational RFC, RFC 2923 on 2000-09-22. All references verified. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Introduce tx bufferingIan McDonald2006-09-221-1/+1
| | | | | | | | | This adds transmit buffering to DCCP. I have tested with CCID2/3 and with loss and rate limiting. Signed off by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Introduces follows48 functionIan McDonald2006-08-261-0/+8
| | | | | | | | This adds a new function to see if two sequence numbers follow each other. Signed off by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Update contact details and copyrightIan McDonald2006-08-261-1/+1
| | | | | | | Just updating copyright and contacts Signed off by: Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: David S. Miller <davem@davemloft.net>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [DCCP] minisock: Rename struct dccp_options to struct dccp_minisockArnaldo Carvalho de Melo2006-03-201-6/+5
| | | | | | | | | | | | | | This will later be included in struct dccp_request_sock so that we can have per connection feature negotiation state while in the 3way handshake, when we clone the DCCP_ROLE_LISTEN socket (in dccp_create_openreq_child) we'll just copy this state from dreq_minisock to dccps_minisock. Also the feature negotiation and option parsing code will mostly touch dccps_minisock, which will simplify some stuff. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: {get|set}sockopt compatibility layerDmitry Mishin2006-03-201-0/+8
| | | | | | | | | This patch extends {get|set}sockopt compatibility layer in order to move protocol specific parts to their place and avoid huge universal net/compat.c file in the future. Signed-off-by: Dmitry Mishin <dim@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] options: Make dccp_insert_options & friends yell on errorArnaldo Carvalho de Melo2006-03-201-4/+4
| | | | | | | | | | And not the silly LIMIT_NETDEBUG and silently return without inserting the option requested. Also drop some old debugging messages associated to option insertion. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Remove leftover dccp_send_response prototypeArnaldo Carvalho de Melo2006-03-201-1/+0
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] ipv6: Add missing ipv6 control socketArnaldo Carvalho de Melo2006-03-201-3/+1
| | | | | | | | | | | | | | I guess I forgot to add it, nah, now it just works: 18:04:33.274066 IP6 ::1.1476 > ::1.5001: request (service=0) 18:04:33.334482 IP6 ::1.5001 > ::1.1476: reset (code=bad_service_code) Ditched IP_DCCP_UNLOAD_HACK, as now we would have to do it for both IPv6 and IPv4, so I'll come up with another way for freeing the control sockets in upcoming changesets. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Uninline some functionsArnaldo Carvalho de Melo2006-03-201-47/+2
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Move the IPv4 specific bits from proto.c to ipv4.cArnaldo Carvalho de Melo2006-03-201-6/+0
| | | | | | | | | | | | | | | | | | | | | | With this patch in place we can break down the complexity by better compartmentalizing the code that is common to ipv6 and ipv4. Now we have these modules: Module Size Used by dccp_diag 1344 0 inet_diag 9448 1 dccp_diag dccp_ccid3 15856 0 dccp_tfrc_lib 12320 1 dccp_ccid3 dccp_ccid2 5764 0 dccp_ipv4 16996 2 dccp 48208 4 dccp_diag,dccp_ccid3,dccp_ccid2,dccp_ipv4 dccp_ipv6 still requires dccp_ipv4 due to dccp_ipv6_mapped, that is the next target to work on the "hey, ipv4 is legacy, I only want ipv6 dude!" direction. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Move dccp_[un]hash from ipv4.c to the coreArnaldo Carvalho de Melo2006-03-201-0/+1
| | | | | | | As this is used by both ipv4 and ipv6 and is not ipv4 specific. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Move dccp_v4_{init,destroy}_sock to the coreArnaldo Carvalho de Melo2006-03-201-2/+2
| | | | | | | Removing one more ipv6 uses ipv4 stuff case in dccp land. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Generalize dccp_v4_send_resetArnaldo Carvalho de Melo2006-03-201-5/+1
| | | | | | | | | | Renaming it to dccp_send_reset and moving it from the ipv4 specific code to the core dccp code. This fixes some bugs in IPV6 where timers would send v4 resets, etc. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] feat: Introduce sysctls for the default featuresArnaldo Carvalho de Melo2006-03-201-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [root@qemu ~]# for a in /proc/sys/net/dccp/default/* ; do echo $a ; cat $a ; done /proc/sys/net/dccp/default/ack_ratio 2 /proc/sys/net/dccp/default/rx_ccid 3 /proc/sys/net/dccp/default/send_ackvec 1 /proc/sys/net/dccp/default/send_ndp 1 /proc/sys/net/dccp/default/seq_window 100 /proc/sys/net/dccp/default/tx_ccid 3 [root@qemu ~]# So if wanting to test ccid3 as the tx CCID one can just do: [root@qemu ~]# echo 3 > /proc/sys/net/dccp/default/tx_ccid [root@qemu ~]# echo 2 > /proc/sys/net/dccp/default/rx_ccid [root@qemu ~]# cat /proc/sys/net/dccp/default/[tr]x_ccid 2 3 [root@qemu ~]# Of course we also need the setsockopt for each app to tell its preferences, but for testing or defining something other than CCID2 as the default for apps that don't explicitely set their preference the sysctl interface is handy. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: sparse endianness annotationsAndrea Bittau2006-03-201-17/+6
| | | | | | | | | | This also fixes the layout of dccp_hdr short sequence numbers, problem was not fatal now as we only support long (48 bits) sequence numbers. Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Prepare the AF agnostic core for the introduction of DCCPv6Arnaldo Carvalho de Melo2006-01-031-0/+22
| | | | | | | | | | | | | Basically exports a similar set of functions as the one exported by the non-AF specific TCP code. In the process moved some non-AF specific code from dccp_v4_connect to dccp_connect_init and moved the checksum verification from dccp_invalid_packet to dccp_v4_rcv, so as to use it in dccp_v6_rcv too. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Just rename dccp_v4_prot to dccp_protArnaldo Carvalho de Melo2006-01-031-1/+1
| | | | | | | To match TCP equivalent. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Simplify skb_set_owner_w semanticsHerbert Xu2005-10-311-1/+0
| | | | | | | | | | | While we're at it let's reorganise the set_owner_w calls a little so that: 1) dccp_transmit_skb sets the owner for all packets except data packets. 2) Add dccp_skb_entail to set owner for packets queued for retransmission. 3) Make dccp_transmit_skb static. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: Move the ack vector code to net/dccp/ackvec.[ch]Arnaldo Carvalho de Melo2005-09-181-70/+12
| | | | | | | | Isolating it, that will be used when we introduce a CCID2 (TCP-Like) implementation. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Introduce DCCP_SOCKOPT_SERVICEArnaldo Carvalho de Melo2005-09-161-5/+4
| | | | | | | | | | | | | | | | | As discussed in the dccp@vger mailing list: Now applications have to use setsockopt(DCCP_SOCKOPT_SERVICE, service[s]), prior to calling listen() and connect(). An array of unsigned ints can be passed meaning that the listening sock accepts connection requests for several services. With this we can ditch struct sockaddr_dccp and use only sockaddr_in (and sockaddr_in6 in the future). Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] Introduce dccp_timestampArnaldo Carvalho de Melo2005-09-091-12/+4
| | | | | | | | To start the timestamps with 0.0ms, easing the integer maths in the CCIDs, this probably will be reworked to use the to be introduced struct timeval_offset infrastructure out of skb_get_timestamp, etc. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [CCID3]: Call sk->sk_write_space(sk) when receiving a feedback packetArnaldo Carvalho de Melo2005-08-291-0/+1
| | | | | | | | | | | | | | | This makes the send rate calculations behave way more closely to what is specified, with the jitter previously seen on x and x_recv disappearing completely on non lossy setups. This resembles the tcp_data_snd_check code, that possibly we'll end up using in DCCP as well, perhaps moving this code to inet_connection_sock. For now I'm doing the simplest implementation tho. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [CCID3]: Reorganise timeval handlingArnaldo Carvalho de Melo2005-08-291-4/+40
| | | | | | | | | | | | | | | | | Introducing functions to add to or subtract from a timeval variable and renaming now_delta to timeval_new_delta that calls do_gettimeofday and then timeval_delta, that should be used when there are several deltas made relative to the current time or setting variables to it, so as to avoid calling do_gettimeofday excessively. I'm leaving these "timeval_" prefixed funcions internal to DCCP for a while till we're sure there are no subtle bugs in it. It also is more correct as it checks if the number of usecs added to or subtracted from a tv_usec field is more than 2 seconds. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Introduce dccp_wait_for_ccid and use it in dccp_write_xmitArnaldo Carvalho de Melo2005-08-291-2/+1
| | | | | | | | | | This is not quite what I think we should have long term but improves performance for now, so lets use it till we get CCID3 working well, then we can think about using sk_write_queue, perhaps using some ideas from Juwen Lai's old stack for 2.4.20. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Export dccp_insert_option_timestamp to CCIDsArnaldo Carvalho de Melo2005-08-291-0/+2
| | | | | | | | And don't insert a TIMESTAMP option in all packets, leave the decision to the CCIDs. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Implement the CLOSING timerArnaldo Carvalho de Melo2005-08-291-1/+1
| | | | | | | | | | | So that we retransmit CLOSE/CLOSEREQ packets till they elicit an answer or we hit a timeout. Most of the machinery uses TCP approaches, this code has to be polished & audited, but this is better than we had before. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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