- 04 9月, 2008 3 次提交
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由 Gerrit Renker 提交于
The TX/RX CCIDs of the minisock are now redundant: similar to the Ack Vector case, their value equals initially that of the sysctl, but at the end of feature negotiation may be something different. The old interface removed by this patch thus has been replaced by the newer interface to dynamically query the currently loaded CCIDs earlier in this patch set. Also removed the constructors for the TX CCID and the RX CCID, since the switch rx/non-rx is done by the handler in minisocks.c (and the handler is the only place in the code where CCIDs are loaded). Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: NIan McDonald <ian.mcdonald@jandi.co.nz>
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由 Gerrit Renker 提交于
This provides function to query the current TX/RX CCID dynamically, without reliance on the minisock value, using dynamic information available in the currently loaded CCID module. This query function is then used to (a) provide the getsockopt part for getting/setting CCIDs via sockopts; (b) replace the current test for "which CCID is in use" in probe.c. Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: NIan McDonald <ian.mcdonald@jandi.co.nz>
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由 Gerrit Renker 提交于
This provides a data structure to record which CCIDs are locally supported and three accessor functions: - a test function for internal use which is used to validate CCID requests made by the user; - a copy function so that the list can be used for feature-negotiation; - documented getsockopt() support so that the user can query capabilities. The data structure is a table which is filled in at compile-time with the list of available CCIDs (which in turn depends on the Kconfig choices). Using the copy function for cloning the list of supported CCIDs is useful for feature negotiation, since the negotiation is now with the full list of available CCIDs (e.g. {2, 3}) instead of the default value {2}. This means negotiation will not fail if the peer requests to use CCID3 instead of CCID2. Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk> Acked-by: NIan McDonald <ian.mcdonald@jandi.co.nz>
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- 29 1月, 2008 2 次提交
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由 Gerrit Renker 提交于
This introduces a CCMPS field for setting a CCID-specific upper bound on the application payload size, as is defined in RFC 4340, section 14. Only the TX CCID is considered in setting this limit, since the RX CCID generates comparatively small (DCCP-Ack) feedback packets. The CCMPS field includes network and transport layer header lengths. The only current CCMPS customer is CCID4 (via RFC 4828). A wrapper is used to allow querying the CCMPS even at times where the CCID modules may not have been fully negotiated yet. In dccp_sync_mss() the variable `mss_now' has been renamed into `cur_mps', to reflect that we are dealing with an MPS, but not an MSS. Since the DCCP code closely follows the TCP code, the identifiers `dccp_sync_mss' and `dccps_mss_cache' have been kept, as they have direct TCP counterparts. Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: NIan McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Gerrit Renker 提交于
This adds documentation for the ccid_operations structure. Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: NIan McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 12 12月, 2006 1 次提交
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由 Gerrit Renker 提交于
The function ccid3_hc_tx_insert_options only does a redundant no-op, as the operation DCCP_SKB_CB(skb)->dccpd_ccval = hctx->ccid3hctx_last_win_count; is already performed _unconditionally_ in ccid3_hc_tx_send_packet. Since there is further no current need for this function, it is removed entirely. Since furthermore, there is actually no present need for the entire interface function ccid_hc_tx_insert_options, it was decided to remove it also, to clean up the interface. Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: NArnaldo Carvalho de Melo <acme@mandriva.com>
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- 08 12月, 2006 1 次提交
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由 Christoph Lameter 提交于
Replace all uses of kmem_cache_t with struct kmem_cache. The patch was generated using the following script: #!/bin/sh # # Replace one string by another in all the kernel sources. # set -e for file in `find * -name "*.c" -o -name "*.h"|xargs grep -l $1`; do quilt add $file sed -e "1,\$s/$1/$2/g" $file >/tmp/$$ mv /tmp/$$ $file quilt refresh done The script was run like this sh replace kmem_cache_t "struct kmem_cache" Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 03 12月, 2006 1 次提交
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由 Gerrit Renker 提交于
This patch implements a suggestion by Ian McDonald and 1) Avoids tests against negative packet lengths by using unsigned int for packet payload lengths in the CCID send_packet()/packet_sent() routines 2) As a consequence, it removes an now unnecessary test with regard to `len > 0' in ccid3_hc_tx_packet_sent: that condition is always true, since * negative packet lengths are avoided * ccid3_hc_tx_send_packet flags an error whenever the payload length is 0. As a consequence, ccid3_hc_tx_packet_sent is never called as all errors returned by ccid_hc_tx_send_packet are caught in dccp_write_xmit 3) Removes the third argument of ccid_hc_tx_send_packet (the `len' parameter), since it is currently always set to skb->len. The code is updated with regard to this parameter change. Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: NIan McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by: NArnaldo Carvalho de Melo <acme@mandriva.com>
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- 21 3月, 2006 2 次提交
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由 Arnaldo Carvalho de Melo 提交于
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: NArnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
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: NArnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 04 1月, 2006 1 次提交
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由 Arnaldo Carvalho de Melo 提交于
To help in reducing the number of include dependencies, several files were touched as they were getting needed headers indirectly for stuff they use. Thanks also to Alan Menegotto for pointing out that net/dccp/proto.c had linux/dccp.h include twice. Signed-off-by: NArnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 10月, 2005 1 次提交
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由 Arnaldo Carvalho de Melo 提交于
For consistency with ccid_exit and to fix a bug when IP_DCCP_UNLOAD_HACK is enabled as the control sock is not associated to any CCID. Signed-off-by: NArnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 18 9月, 2005 1 次提交
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由 Arnaldo Carvalho de Melo 提交于
Allocation for the optnames is similar to the DCCP options, with a range for rx and tx half connection CCIDs. Signed-off-by: NArnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 30 8月, 2005 5 次提交
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由 Arnaldo Carvalho de Melo 提交于
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: NArnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
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: NArnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
Andrew Morton should be happy now 8) Signed-off-by: NArnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
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: NArnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
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: NArnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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