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* [TIPC]: Improve socket time conversionsAllan Stephens2008-04-14
| | | | | | | | | | | | This patch modifies TIPC's socket code to use standard kernel routines to handle time conversions between jiffies and ms. This ensures proper operation even when HZ isn't 1000. Acknowledgements to Eric Sesterhenn <snakebyte@gmx.de> for identifying this issue and proposing a solution. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Remove redundant socket wait queue initializationAllan Stephens2008-04-14
| | | | | | | | This patch eliminates re-initialization of the standard socket wait queue used for sleeping in TIPC's socket creation code. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Cosmetic cleanup of TIPC polling logicAllan Stephens2008-03-26
| | | | | | | | | This patch eliminates an unnecessary poll-related routine by merging it into TIPC's main polling routine, and updates the comments associated with this code. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.YOSHIFUJI Hideaki2008-03-25
| | | | | | | | | Introduce per-sock inlines: sock_net(), sock_net_set() and per-inet_timewait_sock inlines: twsk_net(), twsk_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.YOSHIFUJI Hideaki2008-03-25
| | | | | | | | Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [TIPC]: Update version to 1.6.3Allan Stephens2008-03-06
| | | | | | | This patch updates TIPC's version number to 1.6.3. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Enhancements to message header writingAllan Stephens2008-03-06
| | | | | | | | | | | | | | | | | | This patch makes two enhancements to the routine used to set bit fields within a TIPC message header: 1) It now ignores any bits of the new field value that are not covered by the mask being used. (Previously, if the new value exceeded the size of the mask the extra bits could corrupt other fields in the message header word being updated.) 2) The code has been optimized to minimize the number of run-time endianness conversion operations by leveraging the fact that the mask (and, in some cases, the value as well) is constant and the necessary conversion can be performed by the compiler. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Use correct bitmask when setting versionAllan Stephens2008-03-06
| | | | | | | | This patch ensures that the 3-bit version field of the TIPC message header is masked correctly when written into a message. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Minor cleanup of message header codeAllan Stephens2008-03-06
| | | | | | | | | This patch eliminates some unused or duplicate message header symbols, and fixes up the comments and/or location of a few other symbols. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Eliminate "sparse" symbol warningsAllan Stephens2008-03-06
| | | | | | | This patch eliminates warnings about undeclared symbols. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Add argument validation for shutdown()Allan Stephens2008-03-06
| | | | | | | | This patch validates that the "how" argument to shutdown() is SHUT_RDWR, since this is the only form that TIPC supports. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Removal of message header option codeAllan Stephens2008-03-06
| | | | | | | | | | This patch removes code associated with optional, user-specified fields of the TIPC message header. Such fields were never utilized by TIPC, and have now been removed from the protocol specification. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Convert tsock->sem in a mutexMatthias Kaehlcke2008-03-04
| | | | | | | The semaphore tsock->sem is used as mutex, convert it to the mutex API Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* tipc: fix integer as NULL pointer sparse warnings in tipcHarvey Harrison2008-02-24
| | | | | | | | | | net/tipc/cluster.c:145:2: warning: Using plain integer as NULL pointer net/tipc/link.c:3254:36: warning: Using plain integer as NULL pointer net/tipc/ref.c:151:15: warning: Using plain integer as NULL pointer net/tipc/zone.c:85:2: warning: Using plain integer as NULL pointer Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: declare proto_ops structures as 'const'.Florian Westphal2008-02-07
| | | | | Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Kill unused static inline (x5)Ilpo Järvinen2008-02-07
| | | | | | | | | | | | | All these static inlines are unused: in_own_zone 1 (net/tipc/addr.h) msg_dataoctet 1 (net/tipc/msg.h) msg_direct 1 (include/net/tipc/tipc_msg.h) msg_options 1 (include/net/tipc/tipc_msg.h) tipc_nmap_get 1 (net/tipc/bcast.h) Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Use tipc_port_unlockJulia Lawall2008-01-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The file net/tipc/port.c takes a lock using the function tipc_port_lock and then releases the lock sometimes using tipc_port_unlock and sometimes using spin_unlock_bh(p_ptr->publ.lock). tipc_port_unlock simply does the spin_unlock_bh, but it seems cleaner to use it everywhere. The problem was fixed using the following semantic patch. (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ struct port *p_ptr; @@ p_ptr = tipc_port_lock(...) ... ( p_ptr = tipc_port_lock(...); | ?- spin_unlock_bh(p_ptr->publ.lock); + tipc_port_unlock(p_ptr); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Jon Paul Maloy <maloy@donjonn.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Convert init_timer into setup_timerPavel Emelyanov2008-01-28
| | | | | | | | | | | | | Many-many code in the kernel initialized the timer->function and timer->data together with calling init_timer(timer). There is already a helper for this. Use it for networking code. The patch is HUGE, but makes the code 130 lines shorter (98 insertions(+), 228 deletions(-)). Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Fix semaphore handling.Andrew Morton2007-12-14
| | | | | | | | | As noted by Kevin, tipc's release() does down_interruptible() and ignores the return value. So if signal_pending() we'll end up doing up() on a non-downed semaphore. Fix. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Forget the zero_it argument of sk_alloc()Pavel Emelyanov2007-11-01
| | | | | | | | | | | | | | | Finally, the zero_it argument can be completely removed from the callers and from the function prototype. Besides, fix the checkpatch.pl warnings about using the assignments inside if-s. This patch is rather big, and it is a part of the previous one. I splitted it wishing to make the patches more readable. Hope this particular split helped. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Wrap netdevice hardware header creation.Stephen Hemminger2007-10-10
| | | | | | | | | | Add inline for common usage of hardware header creation, and fix bug in IPV6 mcast where the assumption about negative return is an errno. Negative return from hard_header means not enough space was available,(ie -N bytes). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Introduce and use print_mac() and DECLARE_MAC_BUF()Joe Perches2007-10-10
| | | | | | | This is nicer than the MAC_FMT stuff. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make the device list and device lookups per namespace.Eric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes most of the generic device layer network namespace safe. This patch makes dev_base_head a network namespace variable, and then it picks up a few associated variables. The functions: dev_getbyhwaddr dev_getfirsthwbytype dev_get_by_flags dev_get_by_name __dev_get_by_name dev_get_by_index __dev_get_by_index dev_ioctl dev_ethtool dev_load wireless_process_ioctl were modified to take a network namespace argument, and deal with it. vlan_ioctl_set and brioctl_set were modified so their hooks will receive a network namespace argument. So basically anthing in the core of the network stack that was affected to by the change of dev_base was modified to handle multiple network namespaces. The rest of the network stack was simply modified to explicitly use &init_net the initial network namespace. This can be fixed when those components of the network stack are modified to handle multiple network namespaces. For now the ifindex generator is left global. Fundametally ifindex numbers are per namespace, or else we will have corner case problems with migration when we get that far. At the same time there are assumptions in the network stack that the ifindex of a network device won't change. Making the ifindex number global seems a good compromise until the network stack can cope with ifindex changes when you change namespaces, and the like. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make device event notification network namespace safeEric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | Every user of the network device notifiers is either a protocol stack or a pseudo device. If a protocol stack that does not have support for multiple network namespaces receives an event for a device that is not in the initial network namespace it quite possibly can get confused and do the wrong thing. To avoid problems until all of the protocol stacks are converted this patch modifies all netdev event handlers to ignore events on devices that are not in the initial network namespace. As the rest of the code is made network namespace aware these checks can be removed. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make packet reception network namespace safeEric W. Biederman2007-10-10
| | | | | | | | | | | | | | This patch modifies every packet receive function registered with dev_add_pack() to drop packets if they are not from the initial network namespace. This should ensure that the various network stacks do not receive packets in a anything but the initial network namespace until the code has been converted and is ready for them. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make socket creation namespace safe.Eric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | This patch passes in the namespace a new socket should be created in and has the socket code do the appropriate reference counting. By virtue of this all socket create methods are touched. In addition the socket create methods are modified so that they will fail if you attempt to create a socket in a non-default network namespace. Failing if we attempt to create a socket outside of the default network namespace ensures that as we incrementally make the network stack network namespace aware we will not export functionality that someone has not audited and made certain is network namespace safe. Allowing us to partially enable network namespaces before all of the exotic protocols are supported. Any protocol layers I have missed will fail to compile because I now pass an extra parameter into the socket creation code. [ Integrated AF_IUCV build fixes from Andrew Morton... -DaveM ] Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Clean up duplicate includes in net/tipc/Jesper Juhl2007-08-14
| | | | | | | | | This patch cleans up duplicate includes in net/tipc/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Fix two minor sparse warnings.Florian Westphal2007-08-02
| | | | | | | | | | fix two warnings generated by sparse: link.c:2386 symbol 'msgcount' shadows an earlier one node.c:244 symbol 'addr_string' shadows an earlier one Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Make function tipc_nameseq_subscribe static.Florian Westphal2007-08-02
| | | | | | | make needlessly global function tipc_nameseq_subscribe static. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: fix tipc_link_create error handlingFlorian Westphal2007-07-31
| | | | | | | | | | | | if printbuf allocation or tipc_node_attach_link() fails, invalid references to the link are left in the associated node and bearer structures. Fix by allocating printbuf early and moving timer initialization and the addition of the new link to the b_ptr->links list after tipc_node_attach_link() succeeded. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/* misc endianness annotationsAl Viro2007-07-26
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: Remove slab destructors from kmem_cache_create().Paul Mundt2007-07-19
| | | | | | | | | | | | | | Slab destructors were no longer supported after Christoph's c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been BUGs for both slab and slub, and slob never supported them either. This rips out support for the dtor pointer from kmem_cache_create() completely and fixes up every single callsite in the kernel (there were about 224, not including the slab allocator definitions themselves, or the documentation references). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge branch 'master' of ↵Linus Torvalds2007-07-19
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (25 commits) [TG3]: Fix msi issue with kexec/kdump. [NET] XFRM: Fix whitespace errors. [NET] TIPC: Fix whitespace errors. [NET] SUNRPC: Fix whitespace errors. [NET] SCTP: Fix whitespace errors. [NET] RXRPC: Fix whitespace errors. [NET] ROSE: Fix whitespace errors. [NET] RFKILL: Fix whitespace errors. [NET] PACKET: Fix whitespace errors. [NET] NETROM: Fix whitespace errors. [NET] NETFILTER: Fix whitespace errors. [NET] IPV4: Fix whitespace errors. [NET] DCCP: Fix whitespace errors. [NET] CORE: Fix whitespace errors. [NET] BLUETOOTH: Fix whitespace errors. [NET] AX25: Fix whitespace errors. [PATCH] mac80211: remove rtnl locking in ieee80211_sta.c [PATCH] mac80211: fix GCC warning on 64bit platforms [GENETLINK]: Dynamic multicast groups. [NETLIKN]: Allow removing multicast groups. ...
| * [NET] TIPC: Fix whitespace errors.YOSHIFUJI Hideaki2007-07-18
| | | | | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* | some kmalloc/memset ->kzalloc (tree wide)Yoann Padioleau2007-07-19
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc). Here is a short excerpt of the semantic patch performing this transformation: @@ type T2; expression x; identifier f,fld; expression E; expression E1,E2; expression e1,e2,e3,y; statement S; @@ x = - kmalloc + kzalloc (E1,E2) ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\) - memset((T2)x,0,E1); @@ expression E1,E2,E3; @@ - kzalloc(E1 * E2,E3) + kcalloc(E1,E2,E3) [akpm@linux-foundation.org: get kcalloc args the right way around] Signed-off-by: Yoann Padioleau <padator@wanadoo.fr> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Bryan Wu <bryan.wu@analog.com> Acked-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jiri Kosina <jkosina@suse.cz> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Acked-by: Pierre Ossman <drzeus-list@drzeus.cx> Cc: Jeff Garzik <jeff@garzik.org> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Greg KH <greg@kroah.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [TIPC]: Optimize stream send routine to avoid fragmentationAllan Stephens2007-07-11
| | | | | | | | | | | | | | | | | | | | This patch enhances TIPC's stream socket send routine so that it avoids transmitting data in chunks that require fragmentation and reassembly, thereby improving performance at both the sending and receiving ends of the connection. The "maximum packet size" hint that records MTU info allows the socket to decide how big a chunk it should send; in the event that the hint has become stale, fragmentation may still occur, but the data will be passed correctly and the hint will be updated in time for the following send. Note: The 66060 byte pseudo-MTU used for intra-node connections requires the send routine to perform an additional check to ensure it does not exceed TIPC"s limit of 66000 bytes of user data per chunk. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Jon Paul Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Use standard socket "not implemented" routinesAllan Stephens2007-07-11
| | | | | | | | | | This patch modifies TIPC's socket API to utilize existing generic routines to indicate unsupported operations, rather than adding similar TIPC-specific routines. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Jon Paul Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Improved support for Ethernet traffic filteringAllan Stephens2007-07-11
| | | | | | | | | | | | | | | | | This patch simplifies TIPC's Ethernet receive routine to take advantage of information already present in each incoming sk_buff indicating whether the packet was explicitly sent to the interface, has been broadcast to all interfaces, or was picked up because the interface is in promiscous mode. This new approach also fixes the problem of TIPC accepting unwanted traffic through UML's multicast-based Ethernet interfaces (which deliver traffic in a promiscuous manner even if the interface is not configured to be promiscuous). Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Jon Paul Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Fix infinite loop in netlink handlerFlorian Westphal2007-06-24
| | | | | | | | | | | The tipc netlink config handler uses the nlmsg_pid from the request header as destination for its reply. If the application initialized nlmsg_pid to 0, the reply is looped back to the kernel, causing hangup. Fix: use nlmsg_pid of the skb that triggered the request. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Fixed erroneous introduction of for_each_netdevJon Paul Maloy2007-05-24
| | | | | Signed-off-by: Jon Paul Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Use menuconfig objects.Jan Engelhardt2007-05-24
| | | | | | | | | Use menuconfigs instead of menus, so the whole menu can be disabled at once instead of going through all options. Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds2007-05-06
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (38 commits) kconfig: fix mconf segmentation fault kbuild: enable use of code from a different dir kconfig: error out if recursive dependencies are found kbuild: scripts/basic/fixdep segfault on pathological string-o-death kconfig: correct minor typo in Kconfig warning message. kconfig: fix path to modules.txt in Kconfig help usr/Kconfig: fix typo kernel-doc: alphabetically-sorted entries in index.html of 'htmldocs' kbuild: be more explicit on missing .config file kbuild: clarify the creation of the LOCALVERSION_AUTO string. kbuild: propagate errors from find in scripts/gen_initramfs_list.sh kconfig: refer to qt3 if we cannot find qt libraries kbuild: handle compressed cpio initramfs-es kbuild: ignore section mismatch warning for references from .paravirtprobe to .init.text kbuild: remove stale comment in modpost.c kbuild/mkuboot.sh: allow spaces in CROSS_COMPILE kbuild: fix make mrproper for Documentation/DocBook/man kbuild: remove kconfig binaries during make mrproper kconfig/menuconfig: do not hardcode '.config' kbuild: override build timestamp & version ...
| * kconfig: fix path to modules.txt in Kconfig helpAlexander E. Patrakov2007-05-02
| | | | | | | | | | | | | | | | Documentation/modules.txt doesn't exist, but Documentation/kbuild/modules.txt does. Signed-off-by: Alexander E. Patrakov Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* | [NET]: Rework dev_base via list_head (v3)Pavel Emelianov2007-05-03
|/ | | | | | | | | | | | Cleanup of dev_base list use, with the aim to simplify making device list per-namespace. In almost every occasion, use of dev_base variable and dev->next pointer could be easily replaced by for_each_netdev loop. A few most complicated places were converted to using first_netdev()/next_netdev(). Signed-off-by: Pavel Emelianov <xemul@openvz.org> Acked-by: Kirill Korotaev <dev@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TIPC]: Enhancements to msg_set_bits() routineAllan Stephens2007-04-26
| | | | | | | | | | | | | | | | | | This patch makes two enhancements to msg_set_bits(): 1) It now ignores any bits of the new field value that are not covered by the mask being used. (Previously, if the new value exceeded the size of the mask the extra bits could corrupt other fields in the message header word being updated.) 2) The code has been optimized to minimize the number of run-time endianness conversion operations by leveraging the fact that the mask (and, in some cases, the value as well) is constant and the necessary conversion can be performed by the compiler. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Jon Paul Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: cleanup extra semicolonsStephen Hemminger2007-04-26
| | | | | | | | | | | Spring cleaning time... There seems to be a lot of places in the network code that have extra bogus semicolons after conditionals. Most commonly is a bogus semicolon after: switch() { } Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}Arnaldo Carvalho de Melo2007-04-26
| | | | | | | To clearly state the intent of copying to linear sk_buffs, _offset being a overly long variant but interesting for the sake of saving some bytes. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
* [NETLINK]: Introduce nlmsg_hdr() helperArnaldo Carvalho de Melo2007-04-26
| | | | | | | | | For the common "(struct nlmsghdr *)skb->data" sequence, so that we reduce the number of direct accesses to skb->data and for consistency with all the other cast skb member helpers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Convert skb->tail to sk_buff_data_tArnaldo Carvalho de Melo2007-04-26
| | | | | | | | | | | | | | | So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes on 64bit architectures, allowing us to combine the 4 bytes hole left by the layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4 64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN... :-) Many calculations that previously required that skb->{transport,network, mac}_header be first converted to a pointer now can be done directly, being meaningful as offsets or pointers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Introduce skb_reset_network_header(skb)Arnaldo Carvalho de Melo2007-04-26
| | | | | | | | | | | | For the common, open coded 'skb->nh.raw = skb->data' operation, so that we can later turn skb->nh.raw into a offset, reducing the size of struct sk_buff in 64bit land while possibly keeping it as a pointer on 32bit. This one touches just the most simple case, next will handle the slightly more "complex" cases. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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