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* headers_check fix: tc_ematch/tc_em_text.hJaswinder Singh Rajput2009-01-301-0/+1
| | | | | | | | fix the following 'make headers_check' warning: usr/include/linux/tc_ematch/tc_em_text.h:11: found __[us]{8,16,32,64} type without #include <linux/types.h> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
* headers_check fix: tc_ematch/tc_em_nbyte.hJaswinder Singh Rajput2009-01-301-0/+1
| | | | | | | | fix the following 'make headers_check' warning: usr/include/linux/tc_ematch/tc_em_nbyte.h:8: found __[us]{8,16,32,64} type without #include <linux/types.h> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
* headers_check fix: tc_ematch/tc_em_meta.hJaswinder Singh Rajput2009-01-301-0/+1
| | | | | | | | fix the following 'make headers_check' warning: usr/include/linux/tc_ematch/tc_em_meta.h:18: found __[us]{8,16,32,64} type without #include <linux/types.h> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
* headers_check fix: tc_ematch/tc_em_cmp.hJaswinder Singh Rajput2009-01-301-0/+1
| | | | | | | | fix the following 'make headers_check' warning: usr/include/linux/tc_ematch/tc_em_cmp.h:8: found __[us]{8,16,32,64} type without #include <linux/types.h> Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
* [PKT_SCHED]: vlan tag matchStephen Hemminger2008-02-051-0/+1
| | | | | | | | Provide a way to use tc filters on vlan tag even if tag is buried in skb due to hardware acceleration. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [HEADERS] One line per header in Kbuild files to reduce conflictsDavid Woodhouse2006-09-191-1/+4
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* Add generic Kbuild files for 'make headers_install'David Woodhouse2006-06-181-0/+1
| | | | | | | This adds the Kbuild files listing the files which are to be installed by the 'headers_install' make target, in generic directories. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [INET]: speedup inet (tcp/dccp) lookupsEric Dumazet2005-10-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Arnaldo and I agreed it could be applied now, because I have other pending patches depending on this one (Thank you Arnaldo) (The other important patch moves skc_refcnt in a separate cache line, so that the SMP/NUMA performance doesnt suffer from cache line ping pongs) 1) First some performance data : -------------------------------- tcp_v4_rcv() wastes a *lot* of time in __inet_lookup_established() The most time critical code is : sk_for_each(sk, node, &head->chain) { if (INET_MATCH(sk, acookie, saddr, daddr, ports, dif)) goto hit; /* You sunk my battleship! */ } The sk_for_each() does use prefetch() hints but only the begining of "struct sock" is prefetched. As INET_MATCH first comparison uses inet_sk(__sk)->daddr, wich is far away from the begining of "struct sock", it has to bring into CPU cache cold cache line. Each iteration has to use at least 2 cache lines. This can be problematic if some chains are very long. 2) The goal ----------- The idea I had is to change things so that INET_MATCH() may return FALSE in 99% of cases only using the data already in the CPU cache, using one cache line per iteration. 3) Description of the patch --------------------------- Adds a new 'unsigned int skc_hash' field in 'struct sock_common', filling a 32 bits hole on 64 bits platform. struct sock_common { unsigned short skc_family; volatile unsigned char skc_state; unsigned char skc_reuse; int skc_bound_dev_if; struct hlist_node skc_node; struct hlist_node skc_bind_node; atomic_t skc_refcnt; + unsigned int skc_hash; struct proto *skc_prot; }; Store in this 32 bits field the full hash, not masked by (ehash_size - 1) Using this full hash as the first comparison done in INET_MATCH permits us immediatly skip the element without touching a second cache line in case of a miss. Suppress the sk_hashent/tw_hashent fields since skc_hash (aliased to sk_hash and tw_hash) already contains the slot number if we mask with (ehash_size - 1) File include/net/inet_hashtables.h 64 bits platforms : #define INET_MATCH(__sk, __hash, __cookie, __saddr, __daddr, __ports, __dif)\ (((__sk)->sk_hash == (__hash)) ((*((__u64 *)&(inet_sk(__sk)->daddr)))== (__cookie)) && \ ((*((__u32 *)&(inet_sk(__sk)->dport))) == (__ports)) && \ (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) 32bits platforms: #define TCP_IPV4_MATCH(__sk, __hash, __cookie, __saddr, __daddr, __ports, __dif)\ (((__sk)->sk_hash == (__hash)) && \ (inet_sk(__sk)->daddr == (__saddr)) && \ (inet_sk(__sk)->rcv_saddr == (__daddr)) && \ (!((__sk)->sk_bound_dev_if) || ((__sk)->sk_bound_dev_if == (__dif)))) - Adds a prefetch(head->chain.first) in __inet_lookup_established()/__tcp_v4_check_established() and __inet6_lookup_established()/__tcp_v6_check_established() and __dccp_v4_check_established() to bring into cache the first element of the list, before the {read|write}_lock(&head->lock); Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Acked-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PKT_SCHED]: em_meta: Kill TCF_META_ID_{INDEV,SECURITY,TCVERDICT}David S. Miller2005-07-221-3/+0
| | | | | | | | More unusable TCF_META_* match types that need to get eliminated before 2.6.13 goes out the door. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Thomas Graf <tgraf@suug.ch>
* [PKT_SCHED]: Kill TCF_META_ID_REALDEV from meta ematch.David S. Miller2005-07-221-1/+0
| | | | | | | | | It won't exist any longer when we shrink the SKB in 2.6.14, and we should kill this off before anyone in userspace starts using it. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Thomas Graf <tgraf@suug.ch>
* [PKT_SCHED]: Kill TCF_META_ID_TCCLASSID.Patrick McHardy2005-07-181-1/+0
| | | | | | | | | | | | | | | | | Thomas Graf states: > I used to mark such ids as obsolete in the header but since > skb is on diet anyway and there has been no official > iproute2 release with the ematch bits included it might be > a better idea to remove the ids from the header completely. > Those that have picked up my patch on netdev shouldn't care > about a ABI breakage, actually I doubt that someone is using > it already. So here's the patch to remove it. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Remove unused security member in sk_buffThomas Graf2005-07-051-1/+1
| | | | | Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PKT_SCHED]: Packet classification based on textsearch (ematch)Thomas Graf2005-06-231-0/+19
| | | | | Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PKT_SCHED]: Allow socket attributes to be matched on via meta ematchThomas Graf2005-06-081-0/+30
| | | | | | | | | Adds meta collectors for all socket attributes that make sense to be filtered upon. Some of them are only useful for debugging but having them doesn't hurt. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* Linux-2.6.12-rc2Linus Torvalds2005-04-163-0/+108
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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