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2008-10-08sctp: Rework the tsn map to use generic bitmap.Vlad Yasevich
The tsn map currently use is 4K large and is stuck inside the sctp_association structure making memory references REALLY expensive. What we really need is at most 4K worth of bits so the biggest map we would have is 512 bytes. Also, the map is only really usefull when we have gaps to store and report. As such, starting with minimal map of say 32 TSNs (bits) should be enough for normal low-loss operations. We can grow the map by some multiple of 32 along with some extra room any time we receive the TSN which would put us outside of the map boundry. As we close gaps, we can shift the map to rebase it on the latest TSN we've seen. This saves 4088 bytes per association just in the map alone along savings from the now unnecessary structure members. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08inet: cleanup of local_port_rangeEric Dumazet
I noticed sysctl_local_port_range[] and its associated seqlock sysctl_local_port_range_lock were on separate cache lines. Moreover, sysctl_local_port_range[] was close to unrelated variables, highly modified, leading to cache misses. Moving these two variables in a structure can help data locality and moving this structure to read_mostly section helps sharing of this data among cpus. Cleanup of extern declarations (moved in include file where they belong), and use of inet_get_local_port_range() accessor instead of direct access to ports values. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08udp: Improve port randomizationEric Dumazet
Current UDP port allocation is suboptimal. We select the shortest chain to chose a port (out of 512) that will hash in this shortest chain. First, it can lead to give not so ramdom ports and ease give attackers more opportunities to break the system. Second, it can consume a lot of CPU to scan all table in order to find the shortest chain. Third, in some pathological cases we can fail to find a free port even if they are plenty of them. This patch zap the search for a short chain and only use one random seed. Problem of getting long chains should be addressed in another way, since we can obtain long chains with non random ports. Based on a report and patch from Vitaly Mayatskikh Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08pkt_sched: Update qdisc requeue stats in dev_requeue_skb()Jarek Poplawski
After the last change of requeuing there is no info about such incidents in tc stats. This patch updates the counter, but we should consider this should differ from previous stats because of additional checks preventing to repeat this. On the other hand, previous stats didn't include requeuing of gso_segmented skbs. Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08tcp: fix length used for checksum in a resetIlpo Järvinen
While looking for some common code I came across difference in checksum calculation between tcp_v6_send_(reset|ack) I couldn't explain. I checked both v4 and v6 and found out that both seem to have the same "feature". I couldn't find anything in rfc nor anywhere else which would state that md5 option should be ignored like it was in case of reset so I came to a conclusion that this is probably a genuine bug. I suspect that addition of md5 just was fooled by the excessive copy-paste code in those functions and the reset part was never tested well enough to find out the problem. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: remove unused not init_ipv6_mibs/cleanup_ipv6_mibsDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: making ip and icmp statistics per/namespaceDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: added net argument to ICMP6MSGIN_INC_STATS_BHDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: added net argument to ICMP6MSGOUT_INC_STATS_BHDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: added net argument to ICMP6MSGOUT_INC_STATSDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: added net argument to ICMP6_INC_STATS_BHDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: added net argument to ICMP6_INC_STATSDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: added net argument to IP6_ADD_STATS_BHDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: added net argument to IP6_INC_STATS_BHDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08netns: add net parameter to IP6_INC_STATSDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: consolidate error paths in ipv6_frag_rcvDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08ipv6: local dev is actually unused in ip6_fragmentDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2008-10-08netfilter: xtables: remove bogus mangle table dependency of connmarkJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: use NFPROTO_UNSPEC in more extensionsJan Engelhardt
Lots of extensions are completely family-independent, so squash some code. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: cut down on static data for family-independent extensionsJan Engelhardt
Using ->family in struct xt_*_param, multiple struct xt_{match,target} can be squashed together. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: provide invoked family value to extensionsJan Engelhardt
By passing in the family through which extensions were invoked, a bit of data space can be reclaimed. The "family" member will be added to the parameter structures and the check functions be adjusted. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: move extension arguments into compound structure (6/6)Jan Engelhardt
This patch does this for target extensions' destroy functions. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: move extension arguments into compound structure (5/6)Jan Engelhardt
This patch does this for target extensions' checkentry functions. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: move extension arguments into compound structure (4/6)Jan Engelhardt
This patch does this for target extensions' target functions. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: move extension arguments into compound structure (3/6)Jan Engelhardt
This patch does this for match extensions' destroy functions. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: move extension arguments into compound structure (2/6)Jan Engelhardt
This patch does this for match extensions' checkentry functions. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: move extension arguments into compound structure (1/6)Jan Engelhardt
The function signatures for Xtables extensions have grown over time. It involves a lot of typing/replication, and also a bit of stack space even if they are not used. Realize an NFWS2008 idea and pack them into structs. The skb remains outside of the struct so gcc can continue to apply its optimizations. This patch does this for match extensions' match functions. A few ambiguities have also been addressed. The "offset" parameter for example has been renamed to "fragoff" (there are so many different offsets already) and "protoff" to "thoff" (there is more than just one protocol here, so clarify). Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: use "if" blocks in KconfigJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: sort extensions alphabetically in KconfigJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: ebtables: make BRIDGE_NF_EBTABLES a menuconfig optionJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: ip6tables: fix Kconfig entry dependency for ip6t_LOGJan Engelhardt
ip6t_LOG does certainly not depend on the filter table. (Also, move it so that menuconfig still displays it correctly.) Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: ip6tables: fix name of hopbyhop in KconfigJan Engelhardt
The module is called hbh, not hopbyhop. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: do centralized checkentry call (1/2)Jan Engelhardt
It used to be that {ip,ip6,etc}_tables called extension->checkentry themselves, but this can be moved into the xtables core. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: ebtables: fix one wrong return valueJan Engelhardt
Usually -EINVAL is used when checkentry fails (see *_tables). Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: remove redundant casts from EbtablesJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: remove unused Ebtables functionsJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: implement hotdrop for EbtablesJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: ebtables: use generic table checkingJan Engelhardt
Ebtables ORs (1 << NF_BR_NUMHOOKS) into the hook mask to indicate that the extension was called from a base chain. So this also needs to be present in the extensions' ->hooks. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: x_tables: output bad hook mask in hexadecimalJan Engelhardt
It is a mask, and masks are most useful in hex. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: move Ebtables to use XtablesJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: change Ebtables function signatures to match Xtables'sJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: ebt_among: obtain match size through different meansJan Engelhardt
The function signatures will be changed to match those of Xtables, and the datalen argument will be gone. ebt_among unfortunately relies on it, so we need to obtain it somehow. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: add dummy members to Ebtables code to ease transition to XtablesJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: Change return types of targets/watchers for Ebtables extensionsJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: change return types of match functions for ebtables extensionsJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: change return types of check functions for Ebtables extensionsJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: ebtables: do centralized size checkingJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: iptables TPROXY targetKOVACS Krisztian
The TPROXY target implements redirection of non-local TCP/UDP traffic to local sockets. Additionally, it's possible to manipulate the packet mark if and only if a socket has been found. (We need this because we cannot use multiple targets in the same iptables rule.) Signed-off-by: KOVACS Krisztian <hidden@sch.bme.hu> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: iptables socket matchKOVACS Krisztian
Add iptables 'socket' match, which matches packets for which a TCP/UDP socket lookup succeeds. Signed-off-by: KOVACS Krisztian <hidden@sch.bme.hu> Signed-off-by: Patrick McHardy <kaber@trash.net>
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