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* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-30
| | | | | 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 Melo2006-03-21
| | | | | | | | | | | | | | 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>
* [DCCP]: Uninline some functionsArnaldo Carvalho de Melo2006-03-21
| | | | | 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 Melo2006-03-20
| | | | | | | | | | 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] CCID: Improve CCID infrastructureArnaldo Carvalho de Melo2006-03-20
| | | | | | | | | | | | | | | | | | | 1. No need for ->ccid_init nor ->ccid_exit, this is what module_{init,exit} does and anynways neither ccid2 nor ccid3 were using it. 2. Rename struct ccid to struct ccid_operations and introduce struct ccid with a pointer to ccid_operations and rigth after it the rx or tx private state. 3. Remove the pointer to the state of the half connections from struct dccp_sock, now its derived thru ccid_priv() from the ccid pointer. Now we also can implement the setsockopt for changing the CCID easily as no ccid init routines can affect struct dccp_sock in any way that prevents other CCIDs from working if a CCID switch operation is asked by apps. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Initial feature negotiation implementationAndrea Bittau2006-03-20
| | | | | | | | | | | | | | | Still needs more work, but boots and doesn't crashes, even does some negotiation! 18:38:52.174934 127.0.0.1.43458 > 127.0.0.1.5001: request <change_l ack_ratio 2, change_r ccid 2, change_l ccid 2> 18:38:52.218526 127.0.0.1.5001 > 127.0.0.1.43458: response <nop, nop, change_l ack_ratio 2, confirm_r ccid 2 2, confirm_l ccid 2 2, confirm_r ack_ratio 2> 18:38:52.185398 127.0.0.1.43458 > 127.0.0.1.5001: <nop, confirm_r ack_ratio 2, ack_vector0 0x00, elapsed_time 212> :-) Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Notify CCID only after ACK vectors have been processed.Andrea Bittau2006-01-03
| | | | | | | | | | | The CCID should be notified of packet reception only when a packet is valid. Therefore, the ACK vector needs to be processed before notifying the CCID. Also, the CCID might need information provided by the ACK vector. Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Send an ACK vector when ACKing a response packetAndrea Bittau2006-01-03
| | | | | | | | | | | If ACK vectors are used, each packet with an ACK should contain an ACK vector. The only exception currently is response packets. It probably is not a good idea to store ACK vector state before the connection is completed (to help protect from syn floods). Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Do not process a packet twice when it's not in state DCCP_OPEN.Andrea Bittau2006-01-03
| | | | | | | | | | | | | | | | | | | | | | | | When packets are received, the connection is either in DCCP_OPEN [fast-path] or it isn't. If it's not [e.g. DCCP_PARTOPEN] upper layers will perform sanity checks and parse options. If it is in DCCP_OPEN, dccp_rcv_established() will do it. It is important not to re-parse options in dccp_rcv_established() when it is not called from the fast-path. Else, fore example, the ack vector will be added twice and the CCID will see the packet twice. The solution is to always enfore sanity checks from the upper layers. When packets arrive in the fast-path, sanity checks will be performed before calling dccp_rcv_established(). Note(acme): I rewrote the patch to achieve the same result but keeping dccp_rcv_established with the previous semantics and having it split into __dccp_rcv_established, that doesn't does do any sanity check, code in state != DCCP_OPEN use this lighter version as they already do the sanity checks. Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IP_SOCKGLUE]: Remove most of the tcp specific callsArnaldo Carvalho de Melo2006-01-03
| | | | | | | | | | | | | | As DCCP needs to be called in the same spots. Now we have a member in inet_sock (is_icsk), set at sock creation time from struct inet_protosw->flags (if INET_PROTOSW_ICSK is set, like for TCP and DCCP) to see if a struct sock instance is a inet_connection_sock for places like the ones in ip_sockglue.c (v4 and v6) where we previously were looking if sk_type was SOCK_STREAM, that is insufficient because we now use the same code for DCCP, that has sk_type SOCK_DCCP. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Prepare the AF agnostic core for the introduction of DCCPv6Arnaldo Carvalho de Melo2006-01-03
| | | | | | | | | | | | | 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]: Introduce dccp_ipv4_af_opsArnaldo Carvalho de Melo2006-01-03
| | | | | | | | And make the core DCCP code AF agnostic, just like TCP, now its time to work on net/dccp/ipv6.c, we are close to the end! Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Transition from PARTOPEN to OPEN when receiving DATA packetsArnaldo Carvalho de Melo2005-10-11
| | | | | | | | Noticed by Andrea Bittau, that provided a patch that was modified to not transition from RESPOND to OPEN when receiving DATA packets. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Move the ack vector code to net/dccp/ackvec.[ch]Arnaldo Carvalho de Melo2005-09-18
| | | | | | | | 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]: More precisely set reset_code when sending RESET packetsArnaldo Carvalho de Melo2005-09-16
| | | | | | | | Moving the setting of DCCP_SKB_CB(skb)->dccpd_reset_code to the places where events happen that trigger sending a RESET packet. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Handle SYNC packets in dccp_rcv_state_processArnaldo Carvalho de Melo2005-09-13
| | | | | | | Eliciting a SYNCACK in response, we were handling SYNC packets only in the DCCP_OPEN state, in dccp_rcv_established. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP]: Check if already in the CLOSING state in dccp_rcv_closereqArnaldo Carvalho de Melo2005-09-13
| | | | | | | | It is possible to receive more than one CLOSEREQ packet if the CLOSE packet sent in response is somehow lost, change the state to DCCP_CLOSING only on the first CLOSEREQ packet received. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [DCCP] Introduce dccp_timestampArnaldo Carvalho de Melo2005-09-09
| | | | | | | | 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>
* [DCCP]: Initial dccp_poll implementationArnaldo Carvalho de Melo2005-08-29
| | | | | | | Tested with a patched netcat, no horror stories so far 8) 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 Melo2005-08-29
| | | | | | | | | | | 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>
* [DCCP]: Fix printf format warnings on 64-bit.David S. Miller2005-08-29
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Fix the ACK and SEQ window variables settingsArnaldo Carvalho de Melo2005-08-29
| | | | | | | This is from a first audit, more eyeballs are more than welcome. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Give more info on Step 6 failure debug printkArnaldo Carvalho de Melo2005-08-29
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Use LIMIT_NETDEBUG in some debugging printksArnaldo Carvalho de Melo2005-08-29
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Send SYNCACK packets in response to SYNC packetsArnaldo Carvalho de Melo2005-08-29
| | | | | | | | Also fix step 6 when receiving SYNC or SYNCACK packets, i.e. we were not using the updated swl. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Fix RESET handling in dccp_rcv_state_processArnaldo Carvalho de Melo2005-08-29
| | | | | | | To avoid holding TIMEWAIT state for sockets in the LISTEN state. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Just reflow the source code to fit in 80 columnsArnaldo Carvalho de Melo2005-08-29
| | | | | | | Andrew Morton should be happy now 8) Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make NETDEBUG pure printk wrappersPatrick McHardy2005-08-29
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Fix u64 printf format warnings.David S. Miller2005-08-29
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Initial implementationArnaldo Carvalho de Melo2005-08-29
Development to this point was done on a subversion repository at: http://oops.ghostprotocols.net:81/cgi-bin/viewcvs.cgi/dccp-2.6/ This repository will be kept at this site for the foreseable future, so that interested parties can see the history of this code, attributions, etc. If I ever decide to take this offline I'll provide the full history at some other suitable place. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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