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* [NET] CORE: Introducing new memory accounting interface.Hideo Aoki2008-01-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces new memory accounting functions for each network protocol. Most of them are renamed from memory accounting functions for stream protocols. At the same time, some stream memory accounting functions are removed since other functions do same thing. Renaming: sk_stream_free_skb() -> sk_wmem_free_skb() __sk_stream_mem_reclaim() -> __sk_mem_reclaim() sk_stream_mem_reclaim() -> sk_mem_reclaim() sk_stream_mem_schedule -> __sk_mem_schedule() sk_stream_pages() -> sk_mem_pages() sk_stream_rmem_schedule() -> sk_rmem_schedule() sk_stream_wmem_schedule() -> sk_wmem_schedule() sk_charge_skb() -> sk_mem_charge() Removeing sk_stream_rfree(): consolidates into sock_rfree() sk_stream_set_owner_r(): consolidates into skb_set_owner_r() sk_stream_mem_schedule() The following functions are added. sk_has_account(): check if the protocol supports accounting sk_mem_uncharge(): do the opposite of sk_mem_charge() In addition, to achieve consolidation, updating sk_wmem_queued is removed from sk_mem_charge(). Next, to consolidate memory accounting functions, this patch adds memory accounting calls to network core functions. Moreover, present memory accounting call is renamed to new accounting call. Finally we replace present memory accounting calls with new interface in TCP and SCTP. Signed-off-by: Takahiro Yasui <tyasui@redhat.com> Signed-off-by: Hideo Aoki <haoki@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV6]: Remove useless code from fib6_del_route().Gui Jianfeng2008-01-28
| | | | | | | | There are useless codes in fib6_del_route(). The following patch has been tested, every thing looks fine, as usual. Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NEIGH]: Remove unused method from include/net/neighbour.hRami Rosen2008-01-28
| | | | | Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4]: Remove unused define in include/net/arp.h (HAVE_ARP_CREATE)Rami Rosen2008-01-28
| | | | | Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATM]: [he] fixing compilation when you define USE_RBPS_POOL/USE_RBPL_POOLJorge Boncompte2008-01-28
| | | | | | Signed-off-by: Jorge Boncompte <jorge@dti2.net> Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATM]: [ambassador] kmalloc + memset conversion to kzallocJoonwoo Park2008-01-28
| | | | | | Signed-off-by: Joonwoo Park <joonwpark81@gmail.com> Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATM]: [br2864] whitespace cleanupChas Williams2008-01-28
| | | | | Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATM]: [br2864] routed supportEric Kinzie2008-01-28
| | | | | Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATM]: [he] This patch removes the ancient version string.Adrian Bunk2008-01-28
| | | | | | Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ATM]: Convert struct class_device to struct deviceKay Sievers2008-01-28
| | | | | | Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
* [ATM]: atm is no longer experimentalRobert P. J. Day2008-01-28
| | | | | Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Move all calls to xfrm_audit_state_icvfail to xfrm_inputHerbert Xu2008-01-28
| | | | | | | Let's nip the code duplication in the bud :) Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Fix transport-mode async resume on intput without netfilterHerbert Xu2008-01-28
| | | | | | | | | | When netfilter is off the transport-mode async resumption doesn't work because we don't push back the IP header. This patch fixes that by moving most of the code outside of ifdef NETFILTER since the only part that's not common is the short-circuit in the protocol handler. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Fix double free on skb on async outputHerbert Xu2008-01-28
| | | | | | | | | When the output transform returns EINPROGRESS due to async operation we'll free the skb the straight away as if it were an error. This patch fixes that so that the skb is freed when the async operation completes. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LIBERTAS]: Remove last stray user of MAC_FMT.David S. Miller2008-01-28
| | | | | | Reported by Denis V. Lunev Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] Documentaion: Fix error example at XFRMOUTSTATEMODEERROR.Masahide NAKAMURA2008-01-28
| | | | | Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Remove seq_rtt ptr from clean_rtx_queue argsIlpo Järvinen2008-01-28
| | | | | | | | While checking Gavin's patch I noticed that the returned seq_rtt is not used by the caller. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Force TSO splits to MSS boundariesIlpo Järvinen2008-01-28
| | | | | | | | | | | | | | | | | | | | | | | If snd_wnd - snd_nxt wasn't multiple of MSS, skb was split on odd boundary by the callers of tcp_window_allows. We try really hard to avoid unnecessary modulos. Therefore the old caller side check "if (skb->len < limit)" was too wide as well because limit is not bound in any way to skb->len and can cause spurious testing for trimming in the middle of the queue while we only wanted that to happen at the tail of the queue. A simple additional caller side check for tcp_write_queue_tail would likely have resulted 2 x modulos because the limit would have to be first calculated from window, however, doing that unnecessary modulo is not mandatory. After a minor change to the algorithm, simply determine first if the modulo is needed at all and at that point immediately decide also from which value it should be calculated from. This approach also kills some duplicated code. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [ETH]: Combine format_addr() with print_mac().Michael Chan2008-01-28
| | | | | | | | | | | | | | | | | | | print_mac() used many most net drivers and format_addr() used by net-sysfs.c are very similar and they can be intergrated. format_addr() is also identically redefined in the qla4xxx iscsi driver. Export a new function sysfs_format_mac() to be used by net-sysfs, qla4xxx and others in the future. Both print_mac() and sysfs_format_mac() call _format_mac_addr() to do the formatting. Changed print_mac() to use unsigned char * to be consistent with net_device struct's dev_addr. Added buffer length overrun checking as suggested by Joe Perches. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SOCK] Avoid divides in sk_stream_pages() and __sk_stream_mem_reclaim()Eric Dumazet2008-01-28
| | | | | | | | | | | | | | | | sk_forward_alloc being signed, we should take care of divides by SK_STREAM_MEM_QUANTUM we do in sk_stream_pages() and __sk_stream_mem_reclaim() This patchs introduces SK_STREAM_MEM_QUANTUM_SHIFT, defined as ilog2(SK_STREAM_MEM_QUANTUM), to be able to use right shifts instead of plain divides. This should help compiler to choose right shifts instead of expensive divides (as seen with CONFIG_CC_OPTIMIZE_FOR_SIZE=y on x86) Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: Fix outbound statistics.Masahide NAKAMURA2008-01-28
| | | | | Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETNS]: Modify the neighbour table code so it handles multiple network ↵Eric W. Biederman2008-01-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | namespaces I'm actually surprised at how much was involved. At first glance it appears that the neighbour table data structures are already split by network device so all that should be needed is to modify the user interface commands to filter the set of neighbours by the network namespace of their devices. However a couple things turned up while I was reading through the code. The proxy neighbour table allows entries with no network device, and the neighbour parms are per network device (except for the defaults) so they now need a per network namespace default. So I updated the two structures (which surprised me) with their very own network namespace parameter. Updated the relevant lookup and destroy routines with a network namespace parameter and modified the code that interacts with users to filter out neighbour table entries for devices of other namespaces. I'm a little concerned that we can modify and display the global table configuration and from all network namespaces. But this appears good enough for now. I keep thinking modifying the neighbour table to have per network namespace instances of each table type would should be cleaner. The hash table is already dynamically sized so there are it is not a limiter. The default parameter would be straight forward to take care of. However when I look at the how the network table is built and used I still find some assumptions that there is only a single neighbour table for each type of table in the kernel. The netlink operations, neigh_seq_start, the non-core network users that call neigh_lookup. So while it might be doable it would require more refactoring than my current approach of just doing a little extra filtering in the code. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: Drop packets when replay counter would overflowPaul Moore2008-01-28
| | | | | | | | | | | | | | | | | | | | | | | | | | According to RFC4303, section 3.3.3 we need to drop outgoing packets which cause the replay counter to overflow: 3.3.3. Sequence Number Generation The sender's counter is initialized to 0 when an SA is established. The sender increments the sequence number (or ESN) counter for this SA and inserts the low-order 32 bits of the value into the Sequence Number field. Thus, the first packet sent using a given SA will contain a sequence number of 1. If anti-replay is enabled (the default), the sender checks to ensure that the counter has not cycled before inserting the new value in the Sequence Number field. In other words, the sender MUST NOT send a packet on an SA if doing so would cause the sequence number to cycle. An attempt to transmit a packet that would result in sequence number overflow is an auditable event. The audit log entry for this event SHOULD include the SPI value, current date/time, Source Address, Destination Address, and (in IPv6) the cleartext Flow ID. Signed-off-by: Paul Moore <paul.moore@hp.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: RFC4303 compliant auditingPaul Moore2008-01-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a number of new IPsec audit events to meet the auditing requirements of RFC4303. This includes audit hooks for the following events: * Could not find a valid SA [sections 2.1, 3.4.2] . xfrm_audit_state_notfound() . xfrm_audit_state_notfound_simple() * Sequence number overflow [section 3.3.3] . xfrm_audit_state_replay_overflow() * Replayed packet [section 3.4.3] . xfrm_audit_state_replay() * Integrity check failure [sections 3.4.4.1, 3.4.4.2] . xfrm_audit_state_icvfail() While RFC4304 deals only with ESP most of the changes in this patch apply to IPsec in general, i.e. both AH and ESP. The one case, integrity check failure, where ESP specific code had to be modified the same was done to the AH code for the sake of consistency. Signed-off-by: Paul Moore <paul.moore@hp.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Avoid two divides in __tcp_grow_window()Eric Dumazet2008-01-28
| | | | | | | | | | tcp_win_from_space() being signed, compiler might emit an integer divide to compute tcp_win_from_space()/2 . Using right shifts is OK here and less expensive. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Avoid a divide in tcp_mtu_probing()Eric Dumazet2008-01-28
| | | | | | | | | | tcp_mtu_to_mss() being signed, compiler might emit an integer divide to compute tcp_mtu_to_mss()/2 . Using a right shift is OK here and less expensive. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Move mss variable in tcp_mtu_probing()David S. Miller2008-01-28
| | | | | | Down into the only scope where it is used. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SOCK] Avoid integer divides where not necessary in include/net/sock.hEric Dumazet2008-01-28
| | | | | | | | | | Because sk_wmem_queued, sk_sndbuf are signed, a divide per two may force compiler to use an integer divide. We can instead use a right shift. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: tcp_write_timeout.c cleanupEric Dumazet2008-01-28
| | | | | | | | | Before submiting a patch to change a divide to a right shift, I felt necessary to create a helper function tcp_mtu_probing() to reduce length of lines exceeding 100 chars in tcp_write_timeout(). Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [INET]: Avoid an integer divide in rt_garbage_collect()Eric Dumazet2008-01-28
| | | | | | | | | | Since 'goal' is a signed int, compiler may emit an integer divide to compute goal/2. Using a right shift is OK here and less expensive. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Convert several length variable to unsigned.YOSHIFUJI Hideaki2008-01-28
| | | | | | | | | Several length variables cannot be negative, so convert int to unsigned int. This also allows us to do sane shift operations on those variables. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mac80211/Kconfig: whitespace correctionsJohn W. Linville2008-01-28
| | | | | Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/wireless/Kconfig: whitespace correctionsJohn W. Linville2008-01-28
| | | | | Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: don't read ERP information from (re)association responseJohannes Berg2008-01-28
| | | | | | | | | | According to the standard, the field cannot be present, so don't try to interpret it either. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: move tx crypto decisionJohannes Berg2008-01-28
| | | | | | | | | | | | | | This patch moves the decision making about whether a frame is encrypted with a certain algorithm up into the TX handlers rather than having it in the crypto algorithm implementation. This fixes a problem with the radiotap injection code where injecting a non-data packet and requesting encryption could end up asking the driver to encrypt a packet without giving it a key. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: implement station stats retrievalJohannes Berg2008-01-28
| | | | | | | | | This implements the required cfg80211 callback in mac80211 to allow userspace to get station statistics. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* cfg80211/nl80211: implement station attribute retrievalJohannes Berg2008-01-28
| | | | | | | | | | | After a station is added to the kernel's structures, userspace has to be able to retrieve statistics about that station, especially whether the station was idle and how much bytes were transferred to and from it. This adds the necessary code to nl80211. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* cfg80211/nl80211: station handlingJohannes Berg2008-01-28
| | | | | | | | This patch adds station handling to cfg80211/nl80211. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* cfg80211/nl80211: add beacon settingsJohannes Berg2008-01-28
| | | | | | | | | This adds the necessary API to cfg80211/nl80211 to allow changing beaconing settings. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: support getting key sequence counters via cfg80211Johannes Berg2008-01-28
| | | | | | | | | | This implements cfg80211's get_key() to allow retrieving the sequence counter for a TKIP or CCMP key from userspace. It also cleans up and documents the associated low-level driver interface. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: support adding/removing keys via cfg80211Johannes Berg2008-01-28
| | | | | | | | | This adds the necessary hooks to mac80211 to allow userspace to edit keys with cfg80211 (through nl80211.) Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* cfg80211/nl80211: introduce key handlingJohannes Berg2008-01-28
| | | | | | | | | | This introduces key handling to cfg80211/nl80211. Default and group keys can be added, changed and removed; sequence counters for each key can be retrieved. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* doc: fix typo in feature-removal-scheduleStefano Brivio2008-01-28
| | | | | | Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: allow easier multicast/broadcast buffering in hardwareJohannes Berg2008-01-28
| | | | | | | | | | | | | | | | | There are various decisions influencing the decision whether to buffer a frame for after the next DTIM beacon. The "do we have stations in PS mode" condition cannot be tested by the driver so mac80211 has to do that. To ease driver writing for hardware that can buffer frames until after the next DTIM beacon, introduce a new txctl flag telling the driver to buffer a specific frame. While at it, restructure and comment the code for multicast buffering and remove spurious "inline" directives. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: make ieee80211_rx_mgmt_action staticJohannes Berg2008-01-28
| | | | | | | | The function is only used locally. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: clean up eapol handling in TX pathJohannes Berg2008-01-28
| | | | | | | | | | | | | | The previous patch left only one user of the ieee80211_is_eapol() function and that user can be eliminated easily by introducing a new "frame is EAPOL" flag to handle the frame specially (we already have this information) instead of doing the (expensive) ieee80211_is_eapol() all the time. Also, allow unencrypted frames to be sent when they are injected. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mac80211: clean up eapol frame handling/port controlJohannes Berg2008-01-28
| | | | | | | | | | | | | | | | | This cleans up the eapol frame handling and some related code in the receive and transmit paths. After this patch * EAPOL frames addressed to us or the EAPOL group address are always accepted regardless of whether they are encrypted or not * other frames from a station are dropped if PAE is enabled and the station is not authorized * unencrypted frames (except the EAPOL frames above) are dropped if drop_unencrypted is enabled * some superfluous code that eth_type_trans handles anyway is gone * port control is done for transmitted packets Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* rc80211-pid: export tuning parameters through debugfsMattias Nissler2008-01-28
| | | | | | | | | | This adds all the tunable parameters used by rc80211_pid to debugfs for easy testing and tuning. Signed-off-by: Mattias Nissler <mattias.nissler@gmx.de> Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* rc80211-pid: add debuggingMattias Nissler2008-01-28
| | | | | | | | | | | | | This adds a new debugfs file from which rate control relevant events can be read one event per line. The output includes the current time, so graphs can be created showing the rate control parameters. This helps in evaluating and tuning rate control parameters. While at it, we split headers and code for better readability. Signed-off-by: Mattias Nissler <mattias.nissler@gmx.de> Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* rc80211-pid: add sharpening factorStefano Brivio2008-01-28
| | | | | | | | | | This patch introduces a PID sharpening factor for faster response after association and low activity events. Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it> Signed-off-by: Mattias Nissler <mattias.nissler@gmx.de> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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