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* [NET] ethernet: optimize memcpy and memsetStephen Hemminger2007-10-10
| | | | | | | | | | The ethernet header management only needs to handle a fixed size address (6 bytes). If the memcpy/memset are changed to be passed a constant length, then compiler can optimize for this case (and if it is smart eliminate string instructions). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Inline attach_encap_tmpl(), attach_sec_ctx(), and ↵Thomas Graf2007-10-10
| | | | | | | | | | | | attach_one_addr() These functions are only used once and are a lot easier to understand if inlined directly into the function. Fixes by Masahide NAKAMURA. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Remove dependency on rtnetlinkThomas Graf2007-10-10
| | | | | Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Use nlattr instead of rtattrThomas Graf2007-10-10
| | | | | Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Rename attribute array from xfrma[] to attrs[]Thomas Graf2007-10-10
| | | | | | | Increases readability a lot. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Enhance indexing of the attribute arrayThomas Graf2007-10-10
| | | | | | | | nlmsg_parse() puts attributes at array[type] so the indexing method can be simpilfied by removing the obscuring "- 1". Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Establish an attribute policyThomas Graf2007-10-10
| | | | | | | | | | Adds a policy defining the minimal payload lengths for all the attributes allowing for most attribute validation checks to be removed from in the middle of the code path. Makes updates more consistent as many format errors are recognised earlier, before any changes have been attempted. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Use nlmsg_parse() to parse attributesThomas Graf2007-10-10
| | | | | | | | | | Uses nlmsg_parse() to parse the attributes. This actually changes behaviour as unknown attributes (type > MAXTYPE) no longer cause an error. Instead unknown attributes will be ignored henceforth to keep older kernels compatible with more recent userspace tools. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Use nlmsg_new() and type-safe size calculation helpersThomas Graf2007-10-10
| | | | | | | | | | | Moves all complex message size calculation into own inlined helper functions and makes use of the type-safe netlink interface. Using nlmsg_new() simplifies the calculation itself as it takes care of the netlink header length by itself. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Clear up some of the CONFIG_XFRM_SUB_POLICY ifdef messThomas Graf2007-10-10
| | | | | | | | Moves all of the SUB_POLICY ifdefs related to the attribute size calculation into a function. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Move algorithm length calculation to its own functionThomas Graf2007-10-10
| | | | | | | | Adds alg_len() to calculate the properly padded length of an algorithm attribute to simplify the code. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Use nla_put()/NLA_PUT() variantesThomas Graf2007-10-10
| | | | | | | | Also makes use of copy_sec_ctx() in another place and removes duplicated code. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Use nlmsg_broadcast() and nlmsg_unicast()Thomas Graf2007-10-10
| | | | | | | This simplifies successful return codes from >0 to 0. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Use nlmsg_data() instead of NLMSG_DATA()Thomas Graf2007-10-10
| | | | | Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Use nlmsg_end() and nlmsg_cancel()Thomas Graf2007-10-10
| | | | | Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] netlink: Use nlmsg_put() instead of NLMSG_PUT()Thomas Graf2007-10-10
| | | | | Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Nuke the timeval helpers now that we fully converted to ktime_tArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Nuke dccp_timestamp and dccps_epoch, not used anymoreArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] options: convert dccp_insert_option_timestamp to ktime_tArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Convert dccps_timestamp_time to ktime_tArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] packet_history: Convert dccphtx_tstamp to ktime_tArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] packet_history: convert dccphrx_tstamp to ktime_tArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] ackvec: Convert to ktime_tArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP] CCID3: Stop using dccp_timestampArnaldo Carvalho de Melo2007-10-10
| | | | | | | | Now to convert the ackvec code to ktime_t so that we can get rid of dccp_timestamp and the epoch thing in dccp_sock. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Convert dccp_sample_rtt to ktime_tArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Convert ccid3hcrx_tstamp_last_feedback to ktime_tArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Convert ccid3hcrx_tstamp_last_ack to ktime_tArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Convert ccid3hctx_t_ld to ktime_tArnaldo Carvalho de Melo2007-10-10
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [DCCP]: Make ccid3_hc_tx_update_x get a timestamp if neededArnaldo Carvalho de Melo2007-10-10
| | | | | | | | | | | | | The code was too complicated, if p > 0 in ccid3_hc_tx_no_feedback_timer the timestamp was being obtained to be passed to ccid3_hc_tx_update_x, where only if p > 0 the timestamp was needed, so just leave it to ccid3_hc_tx_update_x to obtain the timestamp if needed. This will help in the upcoming changesets where we'll convert t_ld to ktime_t. We'll eventually try to reuse ktime_get_real() calls again. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> 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>
* [ETHTOOL]: Internal cleanup of ethtool_value-related handlersJeff Garzik2007-10-10
| | | | | | | | | Several get/set functions can be handled by a passing the ethtool_op function pointer directly to a generic function. This permits deletion of a fair bit of redundant code. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ETHTOOL]: Introduce ->{get,set}_priv_flags, ETHTOOL_[GS]PFLAGSJeff Garzik2007-10-10
| | | | | Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ETHTOOL]: Introduce get_sset_count. Obsolete get_stats_count, self_test_countJeff Garzik2007-10-10
| | | | | Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ETHTOOL]: Add ETHTOOL_[GS]FLAGS sub-ioctlsJeff Garzik2007-10-10
| | | | | Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] netconsole: Support dynamic reconfiguration using configfsSatyam Sharma2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based upon initial work by Keiichi Kii <k-keiichi@bx.jp.nec.com>. This patch introduces support for dynamic reconfiguration (adding, removing and/or modifying parameters of netconsole targets at runtime) using a userspace interface exported via configfs. Documentation is also updated accordingly. Issues and brief design overview: (1) Kernel-initiated creation / destruction of kernel objects is not possible with configfs -- the lifetimes of the "config items" is managed exclusively from userspace. But netconsole must support boot/module params too, and these are parsed in kernel and hence netpolls must be setup from the kernel. Joel Becker suggested to separately manage the lifetimes of the two kinds of netconsole_target objects -- those created via configfs mkdir(2) from userspace and those specified from the boot/module option string. This adds complexity and some redundancy here and also means that boot/module param-created targets are not exposed through the configfs namespace (and hence cannot be updated / destroyed dynamically). However, this saves us from locking / refcounting complexities that would need to be introduced in configfs to support kernel-initiated item creation / destroy there. (2) In configfs, item creation takes place in the call chain of the mkdir(2) syscall in the driver subsystem. If we used an ioctl(2) to create / destroy objects from userspace, the special userspace program is able to fill out the structure to be passed into the ioctl and hence specify attributes such as local interface that are required at the time we set up the netpoll. For configfs, this information is not available at the time of mkdir(2). So, we keep all newly-created targets (via configfs) disabled by default. The user is expected to set various attributes appropriately (including the local network interface if required) and then write(2) "1" to the "enabled" attribute. Thus, netpoll_setup() is then called on the set parameters in the context of _this_ write(2) on the "enabled" attribute itself. This design enables the user to reconfigure existing netconsole targets at runtime to be attached to newly-come-up interfaces that may not have existed when netconsole was loaded or when the targets were actually created. All this effectively enables us to get rid of custom ioctls. (3) Ultra-paranoid configfs attribute show() and store() operations, with sanity and input range checking, using only safe string primitives, and compliant with the recommendations in Documentation/filesystems/sysfs.txt. (4) A new function netpoll_print_options() is created in the netpoll API, that just prints out the configured parameters for a netpoll structure. netpoll_parse_options() is modified to use that and it is also exported to be used from netconsole. Signed-off-by: Satyam Sharma <satyam@infradead.org> Acked-by: Keiichi Kii <k-keiichi@bx.jp.nec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] fib_trie: macro cleanupStephen Hemminger2007-10-10
| | | | | | | | This patch converts the messy macro for MASK_PFX to inline function and expands TKEY_GET_MASK in the one place it is used. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] fib_trie: cleanupStephen Hemminger2007-10-10
| | | | | | | | | | | Try this out: * replace macro's with inlines * get rid of places doing multiple evaluations of NODE_PARENT [akpm@linux-foundation.org: rcu_dereference wants an lval] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Move sack_ok access to obviously named funcs & cleanupIlpo Järvinen2007-10-10
| | | | | | | | | | | | | | | | | | | Previously code had IsReno/IsFack defined as macros that were local to tcp_input.c though sack_ok field has user elsewhere too for the same purpose. This changes them to static inlines as preferred according the current coding style and unifies the access to sack_ok across multiple files. Magic bitops of sack_ok for FACK and DSACK are also abstracted to functions with appropriate names. Note: - One sack_ok = 1 remains but that's self explanary, i.e., it enables sack - Couple of !IsReno cases are changed to tcp_is_sack - There were no users for IsDSack => I dropped it Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Reduce sacked_out with reno when purging write_queueIlpo Järvinen2007-10-10
| | | | | | | | | | | | | | | | | | | | | Previously TCP had a transitional state during which reno counted segments that are already below the current window into sacked_out, which is now prevented. In addition, re-try now the unconditional S+L skb catching. This approach conservatively calls just remove_sack and leaves reset_sack() calls alone. The best solution to the whole problem would be to first calculate the new sacked_out fully (this patch does not move reno_sack_reset calls from original sites and thus does not implement this). However, that would require very invasive change to fastretrans_alert (perhaps even slicing it to two halves). Alternatively, all callers of tcp_packets_in_flight (i.e., users that depend on sacked_out) should be postponed until the new sacked_out has been calculated but it isn't any simpler alternative. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Keep state in Disorder also if only lost_out > 0Ilpo Järvinen2007-10-10
| | | | | | | | | | | This happens rather infrequently and is only possible during FRTO. We must not allow TCP to slip to Open state because tcp_fastretrans_alert might then not be called on it's time when FRTO has exited. This become a problem when left_out got removed and was replaced by just sacked_out. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Restore over-zealous tcp_sync_left_out-like removalsIlpo Järvinen2007-10-10
| | | | | | | | | | tcp_verify_left_out is useful for verifying S+L condition, so add it back to couple of places in where the code was not calling to tcp_sync_left_out but used own ad-hoc solution (before the tcp_sync_left_out got removed). Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Left out sync->verify (the new meaning of it) & definifyIlpo Järvinen2007-10-10
| | | | | | | | | | | | | | | | | Left_out was dropped a while ago, thus leaving verifying consistency of the "left out" as only task for the function in question. Thus make it's name more appropriate. In addition, it is intentionally converted to #define instead of static inline because the location of the invariant failure is the most important thing to have if this ever triggers. I think it would have been helpful e.g. in this case where the location of the failure point had to be based on some quesswork: http://lkml.org/lkml/2007/5/2/464 ...Luckily the guesswork seems to have proved to be correct. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Add tcp_left_out(tp) "back" to get cleaner looking linesIlpo Järvinen2007-10-10
| | | | | | | | | tp->left_out got removed but nothing came to replace it back then (users just did addition by themselves), so add function for users now. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Tighten tcp_sock's belt, drop left_outIlpo Järvinen2007-10-10
| | | | | | | | It is easily calculable when needed and user are not that many after all. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Remove num_acked>0 checks from cong.ctrl mods pkts_ackedIlpo Järvinen2007-10-10
| | | | | | | | | | There is no need for such check in pkts_acked because the callback is not invoked unless at least one segment got fully ACKed (i.e., the snd_una moved past skb's end_seq) by the cumulative ACK's snd_una advancement. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Add tcp_dec_pcount_approx int variantIlpo Järvinen2007-10-10
| | | | | Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Move code from tcp_ecn.h to tcp*.c and tcp.h & remove itIlpo Järvinen2007-10-10
| | | | | | | | | No other users exist for tcp_ecn.h. Very few things remain in tcp.h, for most TCP ECN functions callers reside within a single .c file and can be placed there. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Access to highest_sack obsoletes forward_cnt_hintIlpo Järvinen2007-10-10
| | | | | | | In addition, added a reference about the purpose of the loop. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP] FRTO: remove unnecessary fackets/sacked_out recountingIlpo Järvinen2007-10-10
| | | | | | | | | | | | | | F-RTO does not touch SACKED_ACKED bits at all, so there is no need to recount them in tcp_enter_frto_loss. After removal of the else branch, nested ifs can be combined. This must also reset sacked_out when SACK is not in use as TCP could have received some duplicate ACKs prior RTO. To achieve that in a sane manner, tcp_reset_reno_sack was re-placed by the previous patch. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Move Reno SACKed_out counter functions earlierIlpo Järvinen2007-10-10
| | | | | Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
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