- 26 Apr, 2007 40 commits
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Arnaldo Carvalho de Melo authored
For consistency with other skb data accessors, reducing the number of direct accesses to skb->data. Signed-off-by:Arnaldo Carvalho de Melo <acme@redhat.com>
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Eric Dumazet authored
As IPPROTO_TCP is 6, it makes sense to make sure inet_protos[] array is properly cache line aligned to avoid false sharing on SMP. c0680540 b peer_total c0680544 b inet_peer_unused_head c0680560 B inet_protos On i386 this example, we can see that inet_protos[IPPROTO_TCP] shares a potentially hot (and modified) cache line. Signed-off-by:
Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
tcp_memory_pressure and tcp_socket currently share a cache line with tcp_memory_allocated, tcp_sockets_allocated. (Very hot cache line) It makes sense to declare these variables as __read_mostly, to avoid false sharing on SMP. ffffffff8081d9c0 B tcp_orphan_count ffffffff8081d9c4 B tcp_memory_allocated ffffffff8081d9c8 B tcp_sockets_allocated ffffffff8081d9cc B tcp_memory_pressure ffffffff8081d9d0 b tcp_md5sig_users ffffffff8081d9d8 b tcp_md5sig_pool ffffffff8081d9e0 b warntime.31570 ffffffff8081d9e8 b tcp_socket Signed-off-by:
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Thomas Graf authored
The results of FIB rules lookups are cached in the routing cache except for IPv6 as no such cache exists. So far, it was the responsibility of the user to flush the cache after modifying any rules. This lead to many false bug reports due to misunderstanding of this concept. This patch automatically flushes the route cache after inserting or deleting a rule. Thanks to Muli Ben-Yehuda <muli@il.ibm.com> for catching a bug in the previous patch. Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
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Eric Dumazet authored
There is a very tiny probability that build_ehash_secret() is called at the same time by different CPUS. Also, using __read_mostly is a must for inet_ehash_secret Signed-off-by:
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Herbert Xu authored
Right now Xen has a horrible hack that lets it forward packets with partial checksums. One of the reasons that CHECKSUM_PARTIAL and CHECKSUM_COMPLETE were added is so that we can get rid of this hack (where it creates two extra bits in the skbuff to essentially mirror ip_summed without being destroyed by the forwarding code). I had forgotten that I've already gone through all the deivce drivers last time around to make sure that they're looking at ip_summed == CHECKSUM_PARTIAL rather than ip_summed != 0 on transmit. In any case, I've now done that again so it should definitely be safe. Unfortunately nobody has yet added any code to update CHECKSUM_COMPLETE values on forward so we I'm setting that to CHECKSUM_NONE. This should be safe to remove for bridging but I'd like to check that code path first. So here is the patch that lets us get rid of the hack by preserving ip_summed (mostly) on forwarded packets. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Janusz Krzysztofik authored
this is a small patch by Janusz Krzysztofik to ip_route_output_slow() that allows VIP-less LVS linux director to generate packets originating >From VIP if sysctl_ip_nonlocal_bind is set. In a nutshell, the intention is for an LVS linux director to be able to send ICMP unreachable responses to end-users when real-servers are removed. http://archive.linuxvirtualserver.org/html/lvs-users/2007-01/msg00106.htmlSigned-off-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
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Thomas Graf authored
The use of nop rules simplifies the usage of goto rules and adds more flexibility as they allow targets to remain while the actual content of the branches can change easly. Signed-off-by:
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Thomas Graf authored
Rules which match against device names in their selector can remain while the device itself disappears, in fact the device doesn't have to present when the rule is added in the first place. The device name is resolved by trying when the rule is added and later by listening to NETDEV_REGISTER/UNREGISTER notifications. This patch adds the flag FIB_RULE_DEV_DETACHED which is set towards userspace when a rule contains a device match which is unresolved at the moment. This eases spotting the reason why certain rules seem not to function properly. Signed-off-by:
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Thomas Graf authored
This patch adds a new rule action FR_ACT_GOTO which allows to skip a set of rules by jumping to another rule. The rule to jump to is specified via the FRA_GOTO attribute which carries a rule preference. Referring to a rule which doesn't exists is explicitely allowed. Such goto rules are marked with the flag FIB_RULE_UNRESOLVED and will act like a rule with a non-matching selector. The rule will become functional as soon as its target is present. The goto action enables performance optimizations by reducing the average number of rules that have to be passed per lookup. Example: 0: from all lookup local 40: not from all to 192.168.23.128 goto 32766 41: from all fwmark 0xa blackhole 42: from all fwmark 0xff blackhole 32766: from all lookup main Signed-off-by:
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David S. Miller authored
Caused by skb_reset_mac_header() changes, missing semicolon. Signed-off-by: -
Stephen Hemminger authored
Change tcp_probe to use ktime (needed to add one export). Add option to only get events when cwnd changes - from Doug Leith Signed-off-by:
Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by:
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Stephen Hemminger authored
The following update received from Injong updates TCP cubic to the latest version. I am running more complete tests and will have results after 4/1. According to Injong: the new version improves on its scalability, fairness and stability. So in all properties, we confirmed it shows better performance. NCSU results (for 2.6.18 and 2.6.20) available: http://netsrv.csc.ncsu.edu/wiki/index.php/TCP_Testing This version is described in a new Internet draft for CUBIC. http://www.ietf.org/internet-drafts/draft-rhee-tcp-cubic-00.txtSigned-off-by:
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John Heffner authored
Do fragmentation check in ip_forward, similar to ipv6 forwarding. Signed-off-by:
John Heffner <jheffner@psc.edu> Signed-off-by:
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David S. Miller authored
The days are gone when this was not an issue, there are folks out there with huge bot networks that can be used to attack the established hash tables on remote systems. So just like the routing cache and connection tracking hash, use Jenkins hash with random secret input. Signed-off-by: -
Johannes Berg authored
This patch introduces a new NLA_BINARY attribute policy type with the verification of simply checking the maximum length of the payload. It also fixes a small typo in the example. Signed-off-by:
Johannes Berg <johannes@sipsolutions.net> Signed-off-by:
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Vlad Yasevich authored
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Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by:
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Vlad Yasevich authored
As stated in the sctp socket api draft: sac_info: variable If the sac_state is SCTP_COMM_LOST and an ABORT chunk was received for this association, sac_info[] contains the complete ABORT chunk as defined in the SCTP specification RFC2960 [RFC2960] section 3.3.7. We now save received ABORT chunks into the sac_info field and pass that to the user. Signed-off-by:
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Vlad Yasevich authored
Parameters only take effect when a corresponding flag bit is set and a value is specified. This means we need to check the flags in addition to checking for non-zero value. Signed-off-by:
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Vlad Yasevich authored
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Vlad Yasevich authored
This option induces partial delivery to run as soon as the specified amount of data has been accumulated on the association. However, we give preference to fully reassembled messages over PD messages. In any case, window and buffer is freed up. Signed-off-by:
Vlad Yasevich <vladislav.yasevich@.hp.com> Signed-off-by:
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Vlad Yasevich authored
This option was introduced in draft-ietf-tsvwg-sctpsocket-13. It prevents head-of-line blocking in the case of one-to-many endpoint. Applications enabling this option really must enable SCTP_SNDRCV event so that they would know where the data belongs. Based on an earlier patch by Ivan Skytte Jørgensen. Additionally, this functionality now permits multiple associations on the same endpoint to enter Partial Delivery. Applications should be extra careful, when using this functionality, to track EOR indicators. Signed-off-by:
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Patrick McHardy authored
We're holding dev->queue_lock in qdisc_watchdog_schedule and qdisc_watchdog_cancel, no need for the barriers. Signed-off-by:
Patrick McHardy <kaber@trash.net> Signed-off-by:
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Patrick McHardy authored
Uninline tcf_destroy and add a helper function to destroy an entire filter chain. Signed-off-by:
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Patrick McHardy authored
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Patrick McHardy authored
Also rename to psched_tdiff_bounded. Signed-off-by:
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Patrick McHardy authored
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Patrick McHardy authored
Use direct assignment and comparison instead. Signed-off-by:
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Patrick McHardy authored
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Patrick McHardy authored
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Patrick McHardy authored
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Patrick McHardy authored
netem checks PSCHED_TLESS(cb->time_to_send, now) to find out whether it is allowed to send a packet, which is equivalent to cb->time_to_send < now. Use !PSCHED_TLESS(now, cb->time_to_send) instead to properly handle cb->time_to_send == now. Signed-off-by:
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Thomas Graf authored
Patrick has made use of netlink_run_queue() in nfnetlink while my patches have been waiting for net-2.6.22 to open. So this check for NLM_F_REQUEST can go as well. Signed-off-by:
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Yasuyuki Kozakai authored
The destructor per conntrack is unnecessary, then this replaces it with system wide destructor. Signed-off-by:
Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by:
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Yasuyuki Kozakai authored
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Patrick McHardy authored
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Patrick McHardy authored
This is gross, have the wrapper function take the lock. Signed-off-by:
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Michal Miroslaw authored
No other function calls __nfulnl_send() with inst->skb == NULL than nfulnl_timer(). Signed-off-by:
Michal Miroslaw <mirq-linux@rere.qmqm.pl> Signed-off-by:
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Michal Miroslaw authored
get_*() don't need access to seq_file - iter_state is enough for them. Signed-off-by:
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Michal Miroslaw authored
Simple micro-optimization: Don't change any options if the instance is being destroyed. Signed-off-by:
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