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2009-11-10decnet: use RCU to find network devicesstephen hemminger
When showing device statistics use RCU rather than read_lock(&dev_base_lock) Compile tested only. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-06Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/usb/cdc_ether.c All CDC ethernet devices of type USB_CLASS_COMM need to use '&mbm_info'. Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-06decnet: netdevice refcount leakEric Dumazet
While working on device refcount stuff, I found a device refcount leak through DECNET. This nasty bug can be used to hold refcounts on any !DECNET netdevice. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-05net: pass kern to net_proto_family create functionEric Paris
The generic __sock_create function has a kern argument which allows the security system to make decisions based on if a socket is being created by the kernel or by userspace. This patch passes that flag to the net_proto_family specific create function, so it can do the same thing. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-04decnet: avoid touching device refcount in dn_dev_by_index()Eric Dumazet
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-04net: Introduce for_each_netdev_rcu() iteratorEric Dumazet
Adds RCU management to the list of netdevices. Convert some for_each_netdev() users to RCU version, if it can avoid read_lock-ing dev_base_lock Ie: read_lock(&dev_base_loack); for_each_netdev(net, dev) some_action(); read_unlock(&dev_base_lock); becomes : rcu_read_lock(); for_each_netdev_rcu(net, dev) some_action(); rcu_read_unlock(); Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-20net: Fix for dst_negative_adviceKrishna Kumar
dst_negative_advice() should check for changed dst and reset sk_tx_queue_mapping accordingly. Pass sock to the callers of dst_negative_advice. (sk_reset_txq is defined just for use by dst_negative_advice. The only way I could find to get around this is to move dst_negative_() from dst.h to dst.c, include sock.h in dst.c, etc) Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-07net: mark net_proto_ops as constStephen Hemminger
All usages of structure net_proto_ops should be declared const. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-30net: Make setsockopt() optlen be unsigned.David S. Miller
This provides safety against negative optlen at the type level instead of depending upon (sometimes non-trivial) checks against this sprinkled all over the the place, in each and every implementation. Based upon work done by Arjan van de Ven and feedback from Linus Torvalds. Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-24sysctl: remove "struct file *" argument of ->proc_handlerAlexey Dobriyan
It's unused. It isn't needed -- read or write flag is already passed and sysctl shouldn't care about the rest. It _was_ used in two places at arch/frv for some reason. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: David Howells <dhowells@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22mm: replace various uses of num_physpages by totalram_pagesJan Beulich
Sizing of memory allocations shouldn't depend on the number of physical pages found in a system, as that generally includes (perhaps a huge amount of) non-RAM pages. The amount of what actually is usable as storage should instead be used as a basis here. Some of the calculations (i.e. those not intending to use high memory) should likely even use (totalram_pages - totalhigh_pages). Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Dave Airlie <airlied@linux.ie> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-01net: make neigh_ops constantStephen Hemminger
These tables are never modified at runtime. Move to read-only section. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-05net: remove NET_RX_BAD and NET_RX_CN* definesFlorian Westphal
almost no users in the tree; and the few that use them treat them like NET_RX_DROP. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-26decnet: Use rcu_barrier() on module unload.Jesper Dangaard Brouer
The decnet module unloading as been disabled with a '#if 0' statement, because it have had issues. We add a rcu_barrier() anyhow for correctness. The maintainer (Chrissie Caulfield) will look into the unload issue when time permits. Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Chrissie Caulfield <christine.caulfield@googlemail.com> Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-18net: correct off-by-one write allocations reportsEric Dumazet
commit 2b85a34e911bf483c27cfdd124aeb1605145dc80 (net: No more expensive sock_hold()/sock_put() on each tx) changed initial sk_wmem_alloc value. We need to take into account this offset when reporting sk_wmem_alloc to user, in PROC_FS files or various ioctls (SIOCOUTQ/TIOCOUTQ) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-03net: skb->dst accessorsEric Dumazet
Define three accessors to get/set dst attached to a skb struct dst_entry *skb_dst(const struct sk_buff *skb) void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) void skb_dst_drop(struct sk_buff *skb) This one should replace occurrences of : dst_release(skb->dst) skb->dst = NULL; Delete skb->dst field Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-28decnet: Use SKB queue and list helpers instead of doing it by-hand.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-20net: Remove unused parameter from fill method in fib_rules_ops.Rami Rosen
The netlink message header (struct nlmsghdr) is an unused parameter in fill method of fib_rules_ops struct. This patch removes this parameter from this method and fixes the places where this method is called. (include/net/fib_rules.h) Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17ipv4: remove an unused parameter from configure method of fib_rules_ops.Rami Rosen
Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-09decnet: Use data ready call back, rather than hand coding itSteven Whitehouse
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-21net/*: use linux/kernel.h swap()Ilpo Järvinen
tcp_sack_swap seems unnecessary so I pushed swap to the caller. Also removed comment that seemed then pointless, and added include when not already there. Compile tested. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-10net: convert usage of packet_type to read_mostlyStephen Hemminger
Protocols that use packet_type can be __read_mostly section for better locality. Elminate any unnecessary initializations of NULL. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26decnet: fix sparse warnings: symbol shadows an earlier oneHannes Eder
Impact: Remove redundant variable declarations, resp. rename inner scope variable. Fix this sparse warnings: net/decnet/af_decnet.c:1252:40: warning: symbol 'skb' shadows an earlier one net/decnet/af_decnet.c:1223:24: originally declared here net/decnet/af_decnet.c:1582:29: warning: symbol 'val' shadows an earlier one net/decnet/af_decnet.c:1527:22: originally declared here net/decnet/dn_dev.c:687:21: warning: symbol 'err' shadows an earlier one net/decnet/dn_dev.c:670:13: originally declared here net/decnet/sysctl_net_decnet.c:182:21: warning: symbol 'len' shadows an earlier one net/decnet/sysctl_net_decnet.c:173:16: originally declared here Signed-off-by: Hannes Eder <hannes@hanneseder.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26decnet: fix sparse warnings: context imbalanceHannes Eder
Impact: Attribute functions with __acquires(...) resp. __releases(...). Fix this sparse warnings: net/decnet/dn_dev.c:1324:13: warning: context imbalance in 'dn_dev_seq_start' - wrong count at exit net/decnet/dn_dev.c:1366:13: warning: context imbalance in 'dn_dev_seq_stop' - unexpected unlock Signed-off-by: Hannes Eder <hannes@hanneseder.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26decnet: remove some pointless conditionals before kfree_skb()Wei Yongjun
Remove some pointless conditionals before kfree_skb(). Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-24netlink: change nlmsg_notify() return value logicPablo Neira Ayuso
This patch changes the return value of nlmsg_notify() as follows: If NETLINK_BROADCAST_ERROR is set by any of the listeners and an error in the delivery happened, return the broadcast error; else if there are no listeners apart from the socket that requested a change with the echo flag, return the result of the unicast notification. Thus, with this patch, the unicast notification is handled in the same way of a broadcast listener that has set the NETLINK_BROADCAST_ERROR socket flag. This patch is useful in case that the caller of nlmsg_notify() wants to know the result of the delivery of a netlink notification (including the broadcast delivery) and take any action in case that the delivery failed. For example, ctnetlink can drop packets if the event delivery failed to provide reliable logging and state-synchronization at the cost of dropping packets. This patch also modifies the rtnetlink code to ignore the return value of rtnl_notify() in all callers. The function rtnl_notify() (before this patch) returned the error of the unicast notification which makes rtnl_set_sk_err() reports errors to all listeners. This is not of any help since the origin of the change (the socket that requested the echoing) notices the ENOBUFS error if the notification fails and should resync itself. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01net: replace uses of __constant_{endian}Harvey Harrison
Base versions handle constant folding now. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-10net: Make staticRoel Kluin
Sparse asked whether these could be static. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-27decnet: remove private wrappers of endian helpersHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Reviewed-by: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-25netns xfrm: lookup in netnsAlexey Dobriyan
Pass netns to xfrm_lookup()/__xfrm_lookup(). For that pass netns to flow_cache_lookup() and resolver callback. Take it from socket or netdevice. Stub DECnet to init_net. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-21net: remove redundant argument commentsQinghuang Feng
Remove redundant argument comments in files of net/* Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-11net: remove struct dst_entry::entry_sizeAlexey Dobriyan
Unused after kmem_cache_zalloc() conversion. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-03net: '&' reduxAlexey Dobriyan
I want to compile out proc_* and sysctl_* handlers totally and stub them to NULL depending on config options, however usage of & will prevent this, since taking adress of NULL pointer will break compilation. So, drop & in front of every ->proc_handler and every ->strategy handler, it was never needed in fact. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: net: Remove CONFIG_KMOD from net/ (towards removing CONFIG_KMOD entirely) ipv4: Add a missing rcu_assign_pointer() in routing cache. [netdrvr] ibmtr: PCMCIA IBMTR is ok on 64bit xen-netfront: Avoid unaligned accesses to IP header lmc: copy_*_user under spinlock [netdrvr] myri10ge, ixgbe: remove broken select INTEL_IOATDMA
2008-10-16net: Remove CONFIG_KMOD from net/ (towards removing CONFIG_KMOD entirely)Johannes Berg
Some code here depends on CONFIG_KMOD to not try to load protocol modules or similar, replace by CONFIG_MODULES where more than just request_module depends on CONFIG_KMOD and and also use try_then_request_module in ebtables. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (26 commits) decnet: Fix compiler warning in dn_dev.c IPV6: Fix default gateway criteria wrt. HIGH/LOW preference radv option net/802/fc.c: Fix compilation warnings netns: correct mib stats in ip6_route_me_harder() netns: fix net_generic array leak rt2x00: fix regression introduced by "mac80211: free up 2 bytes in skb->cb" rtl8187: Add USB ID for Belkin F5D7050 with RTL8187B chip p54usb: Device ID updates mac80211: fixme for kernel-doc ath9k/mac80211: disallow fragmentation in ath9k, report to userspace libertas : Remove unused variable warning for "old_channel" from cmd.c mac80211: Fix scan RX processing oops orinoco: fix unsafe locking in spectrum_cs_suspend orinoco: fix unsafe locking in orinoco_cs_resume cfg80211: fix debugfs error handling mac80211: fix debugfs netdev rename iwlwifi: fix ct kill configuration for 5350 mac80211: fix HT information element parsing p54: Fix compilation problem on PPC mac80211: fix debugfs lockup ...
2008-10-16sysctl: simplify ->strategyAlexey Dobriyan
name and nlen parameters passed to ->strategy hook are unused, remove them. In general ->strategy hook should know what it's doing, and don't do something tricky for which, say, pointer to original userspace array may be needed (name). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> [ networking bits ] Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Howells <dhowells@redhat.com> Cc: Matt Mackall <mpm@selenic.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-15decnet: Fix compiler warning in dn_dev.cDavid S. Miller
Use offsetof() instead of home-brewed version. Based upon initial patch by Steven Whitehouse and suggestions by Ben Hutchings. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-19netns: Use net_eq() to compare net-namespaces for optimization.YOSHIFUJI Hideaki
Without CONFIG_NET_NS, namespace is always &init_net. Compiler will be able to omit namespace comparisons with this patch. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-16sock: add net to prot->enter_memory_pressure callbackPavel Emelyanov
The tcp_enter_memory_pressure calls NET_INC_STATS, but doesn't have where to get the net from. I decided to add a sk argument, not the net itself, only to factor all the required sock_net(sk) calls inside the enter_memory_pressure callback itself. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-05net: add fib_rules_ops to flush_cache methodDenis V. Lunev
This is required to pass namespace context into rt_cache_flush called from ->flush_cache. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-06-17decnet: Remove SOCK_SLEEP_{PRE,POST} usage.David S. Miller
Just expand the wait sequence. And as a nice side-effect the timeout is respected now. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-04ip: Use inline function dst_metric() instead of direct access to dst->metric[]Satoru SATOH
There are functions to refer to the value of dst->metric[THE_METRIC-1] directly without use of a inline function "dst_metric" defined in net/dst.h. The following patch changes them to use the inline function consistently. Signed-off-by: Satoru SATOH <satoru.satoh@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26[NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.YOSHIFUJI Hideaki
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>
2008-03-26[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.YOSHIFUJI Hideaki
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>
2008-02-29[ATALK/DECNET]: Use seq_open_private in appletalk and decnet.Pavel Emelyanov
These two also perform manual seq_open_private, so patch them both at once. But unlike ATM code, these already use the seq_release_private, so I splitted this patch from the previous one. 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>
2008-02-07[DECNET] ROUTE: remove unecessary alignmentEric Dumazet
Same alignment requirement was removed on IP route cache in the past. This alignment actually has bad effect on 32 bit arches, uniprocessor, since sizeof(dn_rt_hash_bucket) is forced to 8 bytes instead of 4. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETNS]: FIB rules API cleanup.Denis V. Lunev
Remove struct net from fib_rules_register(unregister)/notify_change paths and diet code size a bit. add/remove: 0/0 grow/shrink: 10/12 up/down: 35/-100 (-65) function old new delta notify_rule_change 273 280 +7 trie_show_stats 471 475 +4 fn_trie_delete 473 477 +4 fib_rules_unregister 144 148 +4 fib4_rule_compare 119 123 +4 resize 2842 2845 +3 fn_trie_select_default 515 518 +3 inet_sk_rebuild_header 836 838 +2 fib_trie_seq_show 764 766 +2 __devinet_sysctl_register 276 278 +2 fn_trie_lookup 1124 1123 -1 ip_fib_check_default 133 131 -2 devinet_conf_sysctl 223 221 -2 snmp_fold_field 126 123 -3 fn_trie_insert 2091 2086 -5 inet_create 876 870 -6 fib4_rules_init 197 191 -6 fib_sync_down 452 444 -8 inet_gso_send_check 334 325 -9 fib_create_info 3003 2991 -12 fib_nl_delrule 568 553 -15 fib_nl_newrule 883 852 -31 Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[FIB]: Add netns to fib_rules_ops.Denis V. Lunev
The backward link from FIB rules operations to the network namespace will allow to simplify the API a bit. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETNS]: Consolidate kernel netlink socket destruction.Denis V. Lunev
Create a specific helper for netlink kernel socket disposal. This just let the code look better and provides a ground for proper disposal inside a namespace. Signed-off-by: Denis V. Lunev <den@openvz.org> Tested-by: Alexey Dobriyan <adobriyan@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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