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* [UDP]: Do not allow specific bind when wildcard bind exists.David S. Miller2007-04-30
| | | | | | | | | | When allocating local ports, do not allow a bind to a port with a specific local address when a bind to that port with a wildcard local address already exists. Noticed by Linus. Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPV4] UDP: Fix endianness bugs in hashing changes.David S. Miller2007-04-30
| | | | | | | | I accidently applied an earlier version of Eric Dumazet's patch, from March 21st. His version from March 30th didn't have these bugs, so this just interdiffs to the correct patch. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2007-04-30
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits) [IPV4] SNMP: Support OutMcastPkts and OutBcastPkts [IPV4] SNMP: Support InMcastPkts and InBcastPkts [IPV4] SNMP: Support InTruncatedPkts [IPV4] SNMP: Support InNoRoutes [SNMP]: Add definitions for {In,Out}BcastPkts [TCP] FRTO: RFC4138 allows Nagle override when new data must be sent [TCP] FRTO: Delay skb available check until it's mandatory [XFRM]: Restrict upper layer information by bundle. [TCP]: Catch skb with S+L bugs earlier [PATCH] INET : IPV4 UDP lookups converted to a 2 pass algo [L2TP]: Add the ability to autoload a pppox protocol module. [SKB]: Introduce skb_queue_walk_safe() [AF_IUCV/IUCV]: smp_call_function deadlock [IPV6]: Fix slab corruption running ip6sic [TCP]: Update references in two old comments [XFRM]: Export SPD info [IPV6]: Track device renames in snmp6. [SCTP]: Fix sctp_getsockopt_local_addrs_old() to use local storage. [NET]: Remove NETIF_F_INTERNAL_STATS, default to internal stats. [NETPOLL]: Remove CONFIG_NETPOLL_RX ...
| * [IPV4] SNMP: Support OutMcastPkts and OutBcastPktsMitsuru Chinen2007-04-30
| | | | | | | | | | | | | | | | | | A transmitted IP multicast datagram should be counted as OutMcastPkts. By the same token, a transmitted IP broadcast datagram should be counted as OutBcastPkts. Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IPV4] SNMP: Support InMcastPkts and InBcastPktsMitsuru Chinen2007-04-30
| | | | | | | | | | | | | | | | | | A received IP multicast datagram should be counted as InMcastPkts. By the same token, a received IP broadcast datagram should be counted as InBcastPkts. Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IPV4] SNMP: Support InTruncatedPktsMitsuru Chinen2007-04-30
| | | | | | | | | | | | | | | | An IP datagram which is being discarded because the datagram frame didn't carry enough data should be counted as InTruncatedPkts. Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IPV4] SNMP: Support InNoRoutesMitsuru Chinen2007-04-30
| | | | | | | | | | | | | | | | An IP datagram which is being discarded because of no routes in the forwarding path should be counted as InNoRoutes. Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [TCP] FRTO: RFC4138 allows Nagle override when new data must be sentIlpo Järvinen2007-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a corner case where less than MSS sized new data thingie is awaiting in the send queue. For F-RTO to work correctly, a new data segment must be sent at certain point or F-RTO cannot be used at all. RFC4138 allows overriding of Nagle at that point. Implementation uses frto_counter states 2 and 3 to distinguish when Nagle override is needed. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [TCP] FRTO: Delay skb available check until it's mandatoryIlpo Järvinen2007-04-30
| | | | | | | | | | | | | | | | No new data is needed until the first ACK comes, so no need to check for application limitedness until then. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [XFRM]: Restrict upper layer information by bundle.Masahide NAKAMURA2007-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On MIPv6 usage, XFRM sub policy is enabled. When main (IPsec) and sub (MIPv6) policy selectors have the same address set but different upper layer information (i.e. protocol number and its ports or type/code), multiple bundle should be created. However, currently we have issue to use the same bundle created for the first time with all flows covered by the case. It is useful for the bundle to have the upper layer information to be restructured correctly if it does not match with the flow. 1. Bundle was created by two policies Selector from another policy is added to xfrm_dst. If the flow does not match the selector, it goes to slow path to restructure new bundle by single policy. 2. Bundle was created by one policy Flow cache is added to xfrm_dst as originated one. If the flow does not match the cache, it goes to slow path to try searching another policy. Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [PATCH] INET : IPV4 UDP lookups converted to a 2 pass algoEric Dumazet2007-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some people want to have many UDP sockets, binded to a single port but many different addresses. We currently hash all those sockets into a single chain. Processing of incoming packets is very expensive, because the whole chain must be examined to find the best match. I chose in this patch to hash UDP sockets with a hash function that take into account both their port number and address : This has a drawback because we need two lookups : one with a given address, one with a wildcard (null) address. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [AF_IUCV/IUCV]: smp_call_function deadlockMartin Schwidefsky2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Calling smp_call_function can lead to a deadlock if it is called from tasklet context. Fixing this deadlock requires to move the smp_call_function from the tasklet context to a work queue. To do that queue the path pending interrupts to a separate list and move the path cleanup out of iucv_path_sever to iucv_path_connect and iucv_path_pending. This creates a new requirement for iucv_path_connect: it may not be called from tasklet context anymore. Also fixed compile problem for CONFIG_HOTPLUG_CPU=n and another one when walking the cpu_online mask. When doing this, we must disable cpu hotplug. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IPV6]: Fix slab corruption running ip6sicEric Sesterhenn2007-04-29
| | | | | | | | | | | | | | From: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [TCP]: Update references in two old commentsGerrit Renker2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | This updates references to drafts in comments which must be about 10 years old. Internet draft draft-ietf-tcpimpl-prob-03.txt expired in 1998 and was replaced by RFC 2525 in March 1999. Section 3.10 of the draft maps almost identically into section 2.17 of RFC 2525: both are entitled "Failure to RST on close with data pending", the differences in text body amount to a typo and minor sentence change. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [XFRM]: Export SPD infoJamal Hadi Salim2007-04-29
| | | | | | | | | | | | | | | | With this patch you can use iproute2 in user space to efficiently see how many policies exist in different directions. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IPV6]: Track device renames in snmp6.Stephen Hemminger2007-04-29
| | | | | | | | | | | | | | | | | | | | | | When network device's are renamed, the IPV6 snmp6 code gets confused. It doesn't track name changes so it will OOPS when network device's are removed. The fix is trivial, just unregister/re-register in notify handler. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SCTP]: Fix sctp_getsockopt_local_addrs_old() to use local storage.Vlad Yasevich2007-04-29
| | | | | | | | | | | | | | | | | | | | | | sctp_getsockopt_local_addrs_old() in net/sctp/socket.c calls copy_to_user() while the spinlock addr_lock is held. this should not be done as copy_to_user() might sleep. the call to sctp_copy_laddrs_to_user() while holding the lock is also problematic as it calls copy_to_user() Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [NET]: Remove NETIF_F_INTERNAL_STATS, default to internal stats.Rusty Russell2007-04-29
| | | | | | | | | | | | | | | | | | | | | | Herbert Xu conviced me that a new flag was overkill; every driver currently overrides get_stats, so we might as well make the internal one the default. If someone did fail to set get_stats, they would now get all 0 stats instead of "No statistics available". Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PATCH] ieee80211: add missing global needed by IEEE80211_DEBUG_XXXXLarry Finger2007-04-28
| | | | | | | | | | | | | | | | | | Using any of the IEEE80211_DEBUG_XXXX macros in any ieee80211_crypt routine built as a module results in a missing global for 'ieee80211_debug_level'. The fix is to export the symbol in ieee80211. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | [PATCH] ieee80211-crypt: Make some TKIP and CCMP error logging conditionalLarry Finger2007-04-28
| | | | | | | | | | | | | | | | | | | | There are messages arising from ieee80211_crypt that spam the logs of casual users. These are changed to be logged only if the user specifically requests the IEEE80211_DEBUG_DROP messages. In either case, the error/drop count is incremented. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | [PATCH] Update my email address from jkmaline@cc.hut.fi to j@w1.fiJouni Malinen2007-04-28
|/ | | | | | | | | | | | | After 13 years of use, it looks like my email address is finally going to disappear. While this is likely to drop the amount of incoming spam greatly ;-), it may also affect more appropriate messages, so let's update my email address in various places. In addition, Host AP mailing list is subscribers-only and linux-wireless can also be used for discussing issues related to this driver which is now shown in MAINTAINERS. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* [AF_RXRPC/AFS]: Arch-specific fixes.David Howells2007-04-27
| | | | | | | | | | | | | | | | | | Fixes for various arch compilation problems: (*) Missing module exports. (*) Variable name collision when rxkad and af_rxrpc both built in (rxrpc_debug). (*) Large constant representation problem (AFS_UUID_TO_UNIX_TIME). (*) Configuration dependencies. (*) printk() format warnings. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Revert sk_buff walker cleanups.David S. Miller2007-04-27
| | | | | | | | | | | This reverts eefa3906283a2b60a6d02a2cda593a7d7d7946c5 The simplification made in that change works with the assumption that the 'offset' parameter to these functions is always positive or zero, which is not true. It can be and often is negative in order to access SKB header values in front of skb->data. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds2007-04-27
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (46 commits) dev_dbg: check dev_dbg() arguments drivers/base/attribute_container.c: use mutex instead of binary semaphore mod_sysfs_setup() doesn't return errno when kobject_add_dir() failure occurs s2ram: add arch irq disable/enable hooks define platform wakeup hook, use in pci_enable_wake() security: prevent permission checking of file removal via sysfs_remove_group() device_schedule_callback() needs a module reference s390: cio: Delay uevents for subchannels sysfs: bin.c printk fix Driver core: use mutex instead of semaphore in DMA pool handler driver core: bus_add_driver should return an error if no bus debugfs: Add debugfs_create_u64() the overdue removal of the mount/umount uevents kobject: Comment and warning fixes to kobject.c Driver core: warn when userspace writes to the uevent file in a non-supported way Driver core: make uevent-environment available in uevent-file kobject core: remove rwsem from struct subsystem qeth: Remove usage of subsys.rwsem PHY: remove rwsem use from phy core IEEE1394: remove rwsem use from ieee1394 core ...
| * uevent: use add_uevent_var() instead of open coding itEric Rannaud2007-04-27
| | | | | | | | | | | | | | | | | | | | | | | | Make use of add_uevent_var() instead of (often incorrectly) open coding it. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Eric Rannaud <eric.rannaud@gmail.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * Driver core: notify userspace of network device renamesJean Tourrilhes2007-04-27
| | | | | | | | | | | | | | | | | | | | Provide rename event for when we rename network devices. Signed-off-by: Jean Tourrilhes <jt@hpl.hp.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | Merge branch 'for-linus' of ↵Linus Torvalds2007-04-27
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6: selinux: preserve boolean values across policy reloads selinux: change numbering of boolean directory inodes in selinuxfs selinux: remove unused enumeration constant from selinuxfs selinux: explicitly number all selinuxfs inodes selinux: export initial SID contexts via selinuxfs selinux: remove userland security class and permission definitions SELinux: move security_skb_extlbl_sid() out of the security server MAINTAINERS: update selinux entry SELinux: rename selinux_netlabel.h to netlabel.h SELinux: extract the NetLabel SELinux support from the security server NetLabel: convert a BUG_ON in the CIPSO code to a runtime check NetLabel: cleanup and document CIPSO constants
| * SELinux: extract the NetLabel SELinux support from the security serverPaul Moore2007-04-26
| | | | | | | | | | | | | | | | | | | | | | Up until this patch the functions which have provided NetLabel support to SELinux have been integrated into the SELinux security server, which for various reasons is not really ideal. This patch makes an effort to extract as much of the NetLabel support from the security server as possibile and move it into it's own file within the SELinux directory structure. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
| * NetLabel: convert a BUG_ON in the CIPSO code to a runtime checkPaul Moore2007-04-26
| | | | | | | | | | | | | | | | | | This patch changes a BUG_ON in the CIPSO code to a runtime check. It should also increase the readability of the code as it replaces an unexplained constant with a well defined macro. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
| * NetLabel: cleanup and document CIPSO constantsPaul Moore2007-04-26
| | | | | | | | | | | | | | | | This patch collects all of the CIPSO constants and puts them in one place; it also documents each value explaining how the value is derived. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* | [IPV4] nl_fib_lookup: Initialise res.r before fib_res_put(&res)Sergey Vlasov2007-04-27
| | | | | | | | | | | | | | | | | | When CONFIG_IP_MULTIPLE_TABLES is enabled, the code in nl_fib_lookup() needs to initialize the res.r field before fib_res_put(&res) - unlike fib_lookup(), a direct call to ->tb_lookup does not set this field. Signed-off-by: Sergey Vlasov <vsu@altlinux.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [IPV6]: Fix thinko in ipv6_rthdr_rcv() changes.YOSHIFUJI Hideaki2007-04-27
| | | | | | | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [WIRELESS] cfg80211: Clarify locking comment.Johannes Berg2007-04-26
| | | | | | | | | | | | | | | | This patch clarifies the comment about locking in wiphy_unregister. 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>
* | [WIRELESS] cfg80211: Fix locking in wiphy_new.Johannes Berg2007-04-26
| | | | | | | | | | | | | | | | | | | | | | This patch fixes the locking in wiphy new. Ingo Oeser <netdev@axxeo.de> noticed that locking in the error case was wrong and also suggested this fix. 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>
* | [WEXT]: Misc code cleanups.Johannes Berg2007-04-26
| | | | | | | | | | | | | | | | Just a few things that didn't fit in with the other patches. 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>
* | [WEXT]: Reduce inline abuse.Johannes Berg2007-04-26
| | | | | | | | | | | | | | | | | | | | | | This patch removes a bunch of inline abuse from wext. Most functions that were marked inline are only used once so the compiler will inline them anyway, others are used multiple times but there's no requirement for them to be inline since they aren't in any fast paths. 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>
* | [WEXT]: Move EXPORT_SYMBOL statements where they belong.Johannes Berg2007-04-26
| | | | | | | | | | | | | | | | | | EXPORT_SYMBOL statements are supposed to go together with the symbol they're exporting. This patch moves them accordingly. 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>
* | [WEXT]: Cleanup early ioctl call path.Johannes Berg2007-04-26
| | | | | | | | | | | | | | | | | | This patch makes the code in wireless_process_ioctl somewhat more readable. 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>
* | [WEXT]: Remove options.Johannes Berg2007-04-26
| | | | | | | | | | | | | | | | | | This patch kills the two options in wext that are required to be enabled anyway because they influence the userspace API. 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>
* | [WEXT]: Remove dead debug code.Johannes Berg2007-04-26
| | | | | | | | | | | | | | | | | | | | This patch kills a whole bunch of code that can only ever be used by defining some things in wext.c. Also, the things that are printed are mostly useless since the API is fairly well-tested. 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>
* | [WEXT]: Clean up how wext is called.Johannes Berg2007-04-26
| | | | | | | | | | | | | | | | This patch cleans up the call paths from the core code into wext. 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>
* | [WEXT]: Move to net/wirelessJohannes Berg2007-04-26
| | | | | | | | | | | | | | | | This patch moves dev/core/wireless.c to net/wireless/wext.c. 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>
* | [RXRPC]: Fix pointers passed to bitops.David S. Miller2007-04-26
| | | | | | | | | | | | | | | | | | | | CC [M] net/rxrpc/ar-input.o net/rxrpc/ar-input.c: In function ‘rxrpc_fast_process_data’: net/rxrpc/ar-input.c:171: warning: passing argument 2 of ‘__test_and_set_bit’ from incompatible pointer type net/rxrpc/ar-input.c:180: warning: passing argument 2 of ‘__clear_bit’ from incompatible pointer type net/rxrpc/ar-input.c:218: warning: passing argument 2 of ‘__clear_bit’ from incompatible pointer type Signed-off-by: David S. Miller <davem@davemloft.net>
* | [RXRPC]: Remove bogus atomic_* overrides.David S. Miller2007-04-26
| | | | | | | | | | | | | | | | These are done with CPP defines which several platforms use for their atomic.h implementation, which floods the build with warnings and breaks the build. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [AF_RXRPC]: Delete the old RxRPC code.David Howells2007-04-26
| | | | | | | | | | | | | | Delete the old RxRPC code as it's now no longer used. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [AF_RXRPC]: Add an interface to the AF_RXRPC module for the AFS filesystem ↵David Howells2007-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | to use Add an interface to the AF_RXRPC module so that the AFS filesystem module can more easily make use of the services available. AFS still opens a socket but then uses the action functions in lieu of sendmsg() and registers an intercept functions to grab messages before they're queued on the socket Rx queue. This permits AFS (or whatever) to: (1) Avoid the overhead of using the recvmsg() call. (2) Use different keys directly on individual client calls on one socket rather than having to open a whole slew of sockets, one for each key it might want to use. (3) Avoid calling request_key() at the point of issue of a call or opening of a socket. This is done instead by AFS at the point of open(), unlink() or other VFS operation and the key handed through. (4) Request the use of something other than GFP_KERNEL to allocate memory. Furthermore: (*) The socket buffer markings used by RxRPC are made available for AFS so that it can interpret the cooked RxRPC messages itself. (*) rxgen (un)marshalling abort codes are made available. The following documentation for the kernel interface is added to Documentation/networking/rxrpc.txt: ========================= AF_RXRPC KERNEL INTERFACE ========================= The AF_RXRPC module also provides an interface for use by in-kernel utilities such as the AFS filesystem. This permits such a utility to: (1) Use different keys directly on individual client calls on one socket rather than having to open a whole slew of sockets, one for each key it might want to use. (2) Avoid having RxRPC call request_key() at the point of issue of a call or opening of a socket. Instead the utility is responsible for requesting a key at the appropriate point. AFS, for instance, would do this during VFS operations such as open() or unlink(). The key is then handed through when the call is initiated. (3) Request the use of something other than GFP_KERNEL to allocate memory. (4) Avoid the overhead of using the recvmsg() call. RxRPC messages can be intercepted before they get put into the socket Rx queue and the socket buffers manipulated directly. To use the RxRPC facility, a kernel utility must still open an AF_RXRPC socket, bind an addess as appropriate and listen if it's to be a server socket, but then it passes this to the kernel interface functions. The kernel interface functions are as follows: (*) Begin a new client call. struct rxrpc_call * rxrpc_kernel_begin_call(struct socket *sock, struct sockaddr_rxrpc *srx, struct key *key, unsigned long user_call_ID, gfp_t gfp); This allocates the infrastructure to make a new RxRPC call and assigns call and connection numbers. The call will be made on the UDP port that the socket is bound to. The call will go to the destination address of a connected client socket unless an alternative is supplied (srx is non-NULL). If a key is supplied then this will be used to secure the call instead of the key bound to the socket with the RXRPC_SECURITY_KEY sockopt. Calls secured in this way will still share connections if at all possible. The user_call_ID is equivalent to that supplied to sendmsg() in the control data buffer. It is entirely feasible to use this to point to a kernel data structure. If this function is successful, an opaque reference to the RxRPC call is returned. The caller now holds a reference on this and it must be properly ended. (*) End a client call. void rxrpc_kernel_end_call(struct rxrpc_call *call); This is used to end a previously begun call. The user_call_ID is expunged from AF_RXRPC's knowledge and will not be seen again in association with the specified call. (*) Send data through a call. int rxrpc_kernel_send_data(struct rxrpc_call *call, struct msghdr *msg, size_t len); This is used to supply either the request part of a client call or the reply part of a server call. msg.msg_iovlen and msg.msg_iov specify the data buffers to be used. msg_iov may not be NULL and must point exclusively to in-kernel virtual addresses. msg.msg_flags may be given MSG_MORE if there will be subsequent data sends for this call. The msg must not specify a destination address, control data or any flags other than MSG_MORE. len is the total amount of data to transmit. (*) Abort a call. void rxrpc_kernel_abort_call(struct rxrpc_call *call, u32 abort_code); This is used to abort a call if it's still in an abortable state. The abort code specified will be placed in the ABORT message sent. (*) Intercept received RxRPC messages. typedef void (*rxrpc_interceptor_t)(struct sock *sk, unsigned long user_call_ID, struct sk_buff *skb); void rxrpc_kernel_intercept_rx_messages(struct socket *sock, rxrpc_interceptor_t interceptor); This installs an interceptor function on the specified AF_RXRPC socket. All messages that would otherwise wind up in the socket's Rx queue are then diverted to this function. Note that care must be taken to process the messages in the right order to maintain DATA message sequentiality. The interceptor function itself is provided with the address of the socket and handling the incoming message, the ID assigned by the kernel utility to the call and the socket buffer containing the message. The skb->mark field indicates the type of message: MARK MEANING =============================== ======================================= RXRPC_SKB_MARK_DATA Data message RXRPC_SKB_MARK_FINAL_ACK Final ACK received for an incoming call RXRPC_SKB_MARK_BUSY Client call rejected as server busy RXRPC_SKB_MARK_REMOTE_ABORT Call aborted by peer RXRPC_SKB_MARK_NET_ERROR Network error detected RXRPC_SKB_MARK_LOCAL_ERROR Local error encountered RXRPC_SKB_MARK_NEW_CALL New incoming call awaiting acceptance The remote abort message can be probed with rxrpc_kernel_get_abort_code(). The two error messages can be probed with rxrpc_kernel_get_error_number(). A new call can be accepted with rxrpc_kernel_accept_call(). Data messages can have their contents extracted with the usual bunch of socket buffer manipulation functions. A data message can be determined to be the last one in a sequence with rxrpc_kernel_is_data_last(). When a data message has been used up, rxrpc_kernel_data_delivered() should be called on it.. Non-data messages should be handled to rxrpc_kernel_free_skb() to dispose of. It is possible to get extra refs on all types of message for later freeing, but this may pin the state of a call until the message is finally freed. (*) Accept an incoming call. struct rxrpc_call * rxrpc_kernel_accept_call(struct socket *sock, unsigned long user_call_ID); This is used to accept an incoming call and to assign it a call ID. This function is similar to rxrpc_kernel_begin_call() and calls accepted must be ended in the same way. If this function is successful, an opaque reference to the RxRPC call is returned. The caller now holds a reference on this and it must be properly ended. (*) Reject an incoming call. int rxrpc_kernel_reject_call(struct socket *sock); This is used to reject the first incoming call on the socket's queue with a BUSY message. -ENODATA is returned if there were no incoming calls. Other errors may be returned if the call had been aborted (-ECONNABORTED) or had timed out (-ETIME). (*) Record the delivery of a data message and free it. void rxrpc_kernel_data_delivered(struct sk_buff *skb); This is used to record a data message as having been delivered and to update the ACK state for the call. The socket buffer will be freed. (*) Free a message. void rxrpc_kernel_free_skb(struct sk_buff *skb); This is used to free a non-DATA socket buffer intercepted from an AF_RXRPC socket. (*) Determine if a data message is the last one on a call. bool rxrpc_kernel_is_data_last(struct sk_buff *skb); This is used to determine if a socket buffer holds the last data message to be received for a call (true will be returned if it does, false if not). The data message will be part of the reply on a client call and the request on an incoming call. In the latter case there will be more messages, but in the former case there will not. (*) Get the abort code from an abort message. u32 rxrpc_kernel_get_abort_code(struct sk_buff *skb); This is used to extract the abort code from a remote abort message. (*) Get the error number from a local or network error message. int rxrpc_kernel_get_error_number(struct sk_buff *skb); This is used to extract the error number from a message indicating either a local error occurred or a network error occurred. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel bothDavid Howells2007-04-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide AF_RXRPC sockets that can be used to talk to AFS servers, or serve answers to AFS clients. KerberosIV security is fully supported. The patches and some example test programs can be found in: http://people.redhat.com/~dhowells/rxrpc/ This will eventually replace the old implementation of kernel-only RxRPC currently resident in net/rxrpc/. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [XFRM]: Missing bits to SAD info.Jamal Hadi Salim2007-04-26
| | | | | | | | | | | | | | This brings the SAD info in sync with net-2.6.22/net-2.6 Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [BLUETOOTH] rfcomm_worker(): fix wakeup raceAndrew Morton2007-04-26
| | | | | | | | | | | | | | | | Set TASK_INTERRUPTIBLE prior to testing the flag to avoid missed wakeups. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [NET]: SPIN_LOCK_UNLOCKED cleanup in drivers/atm, netMilind Arun Choudhary2007-04-26
| | | | | | | | | | | | | | | | SPIN_LOCK_UNLOCKED cleanup,use __SPIN_LOCK_UNLOCKED instead Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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