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2005-08-29[DCCP]: Initial dccp_poll implementationArnaldo Carvalho de Melo
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>
2005-08-29[DCCP]: Call the HC exit routines at dccp_v4_destroy_sockArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Introduce dccp_get_infoArnaldo Carvalho de Melo
And also hc_tx and hc_rx get_info functions for the CCIDs to fill in information that is specific to them. For now reusing struct tcp_info, later I'll try to figure out a better solution, for now its really nice to get this kind of info: [root@qemu ~]# ./ss -danemi State Recv-Q Send-Q Local Addr:Port Peer Addr:Port LISTEN 0 0 *:5001 *:* ino:628 sk:c1340040 mem:(r0,w0,f0,t0) cwnd:0 ssthresh:0 ESTAB 0 0 172.20.0.2:5001 172.20.0.1:32785 ino:629 sk:c13409a0 mem:(r0,w0,f0,t0) ts rto:1000 rtt:0.004/0 cwnd:0 ssthresh:0 rcv_rtt:61.377 This, for instance, shows that we're not congestion controlling ACKs, as the above output is in the ttcp receiving host, and ttcp is a one way app, i.e. the received never calls sendmsg, so ccid_hc_tx_send_packet is never called, so the TX half connection stays in TFRC_SSTATE_NO_SENT state and hctx_rtt is never calculated, stays with the value set in ccid3_hc_tx_init, 4us, as show above in milliseconds (0.004ms), upcoming patches will fix this. rcv_rtt seems sane tho, matching ping results :-) Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[CCID3]: Calculate the RTT in the RX half connectionArnaldo Carvalho de Melo
Using TIMESTAMP_ECHO and ELAPSED_TIME options received. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Export dccp_insert_option_timestamp to CCIDsArnaldo Carvalho de Melo
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>
2005-08-29[CCID]: Make ccid_hc_[rt]x_exit accept NULL argumentsArnaldo Carvalho de Melo
Just like kfree, etc it will just not call the CCID exit routines when the private data area is set to NULL. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Send a DATAACK packet when we have a TIMESTAMP_ECHO pendingArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Fix skb leak in dccp_sendmsgArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Implement the CLOSING timerArnaldo Carvalho de Melo
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>
2005-08-29[DCCP]: Fix printf format warnings on 64-bit.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Fix ackno setting in SYNC/SYNCACK packetsArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Fix the ACK and SEQ window variables settingsArnaldo Carvalho de Melo
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>
2005-08-29[DCCP]: Give more info on Step 6 failure debug printkArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Fix seqno setting in dccp_v4_ctl_send_resetArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[CCID3]: Reintroduce ccid3hctx_t_rtoArnaldo Carvalho de Melo
CCID3 keeps this variable in usecs, inet_connection_socks in jiffies, so to avoid Mars orbiter losses lets reintroduce ccid3hctx_t_rto 8) Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Fix the timestamp optionsIan McDonald
This changes timestamp, timestamp echo, and elapsed time to use units of 10 usecs as per DCCP spec. This has been tested to verify that times are correct. Also fixed up length and used hton/ntoh more. Still to add in later patches: - actually use elapsed time to adjust RTT (commented out as was prior to this patch) - send options at times more closely following the spec (content is now correct) Signed-off-by: Ian McDonald <iam4@cs.waikato.ac.nz> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Use LIMIT_NETDEBUG in some debugging printksArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Set dccp_ctl_socket to NULL in dccp_ctl_sock_exitArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Fix elapsed time option as per section 13.2 of spec v11Ian McDonald
The elapsed time can be two bytes or four bytes only. Signed-off-by: Ian McDonald <iam4@cs.waikato.ac.nz> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Send SYNCACK packets in response to SYNC packetsArnaldo Carvalho de Melo
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>
2005-08-29[DCCP]: Fix compiler warningsPatrick McHardy
may be a false warning if there always is something on ccid3hcrx_hist: net/dccp/ccids/ccid3.c: In function 'ccid3_hc_rx_packet_recv': net/dccp/ccids/ccid3.c:1634: warning: 'tstamp.tv_usec' may be used uninitialized in this function net/dccp/ccids/ccid3.c:1634: warning: 'tstamp.tv_sec' may be used uninitialized in this function const on inline functions doesn't have any effect: net/dccp/dccp.h:64: warning: type qualifiers ignored on function return type net/dccp/dccp.h:70: warning: type qualifiers ignored on function return type net/dccp/dccp.h:76: warning: type qualifiers ignored on function return type Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Fix sparse warningsArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Fix RESET handling in dccp_rcv_state_processArnaldo Carvalho de Melo
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>
2005-08-29[DCCP]: Introduce the DCCP Kernel hacking menuArnaldo Carvalho de Melo
Only available if CONFIG_DEBUG_KERNEL is enabled in the "Kernel Hacking" Menu. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Rewrite dccp_sendmsg to be more like UDPArnaldo Carvalho de Melo
Based on discussions with Nishida-san. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Just reflow the source code to fit in 80 columnsArnaldo Carvalho de Melo
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>
2005-08-29[PACKET_HISTORY]: Add dccphtx_rtt and rename the win_count fieldsArnaldo Carvalho de Melo
As requested by Ian. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: Ian McDonald <iam4@cs.waikato.ac.nz> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[INET_DIAG]: Move the tcp_diag interface to the proper placeArnaldo Carvalho de Melo
With this the previous setup is back, i.e. tcp_diag can be built as a module, as dccp_diag and both share the infrastructure available in inet_diag. If one selects CONFIG_INET_DIAG as module CONFIG_INET_TCP_DIAG will also be built as a module, as will CONFIG_INET_DCCP_DIAG, if CONFIG_IP_DCCP was selected static or as a module, if CONFIG_INET_DIAG is y, being statically linked CONFIG_INET_TCP_DIAG will follow suit and CONFIG_INET_DCCP_DIAG will be built in the same manner as CONFIG_IP_DCCP. Now to aim at UDP, converting it to use inet_hashinfo, so that we can use iproute2 for UDP sockets as well. Ah, just to show an example of this new infrastructure working for DCCP :-) [root@qemu ~]# ./ss -dane State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 0 *:5001 *:* ino:942 sk:cfd503a0 ESTAB 0 0 127.0.0.1:5001 127.0.0.1:32770 ino:943 sk:cfd50a60 ESTAB 0 0 127.0.0.1:32770 127.0.0.1:5001 ino:947 sk:cfd50700 TIME-WAIT 0 0 127.0.0.1:32769 127.0.0.1:5001 timer:(timewait,3.430ms,0) ino:0 sk:cf209620 Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[INET_DIAG]: Rename tcp_diag.[ch] to inet_diag.[ch]Arnaldo Carvalho de Melo
Next changeset will introduce net/ipv4/tcp_diag.c, moving the code that was put transitioanlly in inet_diag.c. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[TCPDIAG]: Just rename everything to inet_diagArnaldo Carvalho de Melo
Next changeset will rename tcp_diag.[ch] to inet_diag.[ch]. I'm taking this longer route so as to easy review, making clear the changes made all along the way. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[TCPDIAG]: Introduce inet_diag_{register,unregister}Arnaldo Carvalho de Melo
Next changeset will rename tcp_diag to inet_diag and move the tcp_diag code out of it and into a new tcp_diag.c, similar to the net/dccp/diag.c introduced in this changeset, completing the transition to a generic inet_diag infrastructure. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[CCID3]: Ditch USEC_IN_SEC as time.h has USEC_PER_SECArnaldo Carvalho de Melo
That is equivalent, no need to have a private one. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-08-29[CCID3]: Separate most of the packet history codeArnaldo Carvalho de Melo
This also changes the list_for_each_entry_safe_continue behaviour to match its kerneldoc comment, that is, to start after the pos passed. Also adds several helper functions from previously open coded fragments, making the code more clear. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-08-29[TCPDIAG]: Implement cheapest way of supporting DCCPDIAG_GETSOCKArnaldo Carvalho de Melo
With ugly ifdefs, etc, but this actually: 1. keeps the existing ABI, i.e. no need to recompile the iproute2 utilities if not interested in DCCP. 2. Provides all the tcp_diag functionality in DCCP, with just a small patch that makes iproute2 support DCCP. Of course I'll get this cleaned-up in time, but for now I think its OK to be this way to quickly get this functionality. iproute2-ss050808 patch at: http://vger.kernel.org/~acme/iproute2-ss050808.dccp.patch Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[NET]: Make NETDEBUG pure printk wrappersPatrick McHardy
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Finish the TIMEWAIT minisock supportArnaldo Carvalho de Melo
Using most of the infrastructure TCP uses, with a dccp_death_row, etc. As per my current interpretation of the draft what we have with this changeset seems to be all we need (or very close to it 8)). Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Initialize icsk_rto in dccp_v4_init_sockArnaldo Carvalho de Melo
Fixes nasty bug related to the retransmit timer (yeah, DCCP does retransmits) firing too early. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Introduce dccp_write_xmit from code in dccp_sendmsgArnaldo Carvalho de Melo
This way it gets closer to the TCP flow, where congestion window checks are done, it seems we can map ccid_hc_tx_send_packet in dccp_write_xmit to tcp_snd_wnd_test in tcp_write_xmit, a CCID2 decision should just fit in here as well... Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Fix u64 printf format warnings.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[INET]: Make inet_create try to load protocol modulesArnaldo Carvalho de Melo
Syntax is net-pf-PROTOCOL_FAMILY-PROTOCOL-SOCK_TYPE and if this fails net-pf-PROTOCOL_FAMILY-PROTOCOL. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[CCID3]: Reenable list_for_each_entry_safe_continue usageArnaldo Carvalho de Melo
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Fix checksum routinesYoshifumi Nishida
Signed-off-by: Yoshifumi Nishida <nishida@csl.sony.co.jp> Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[ICSK]: Move generalised functions from tcp to inet_connection_sockArnaldo Carvalho de Melo
This also improves reqsk_queue_prune and renames it to inet_csk_reqsk_queue_prune, as it deals with both inet_connection_sock and inet_request_sock objects, not just with request_sock ones thus belonging to inet_request_sock. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[DCCP]: Initial implementationArnaldo Carvalho de Melo
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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