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2010-02-16percpu: add __percpu sparse annotations to netTejun Heo
Add __percpu sparse annotations to net. These annotations are to make sparse consider percpu variables to be in a different address space and warn if accessed without going through percpu accessors. This patch doesn't affect normal builds. The macro and type tricks around snmp stats make things a bit interesting. DEFINE/DECLARE_SNMP_STAT() macros mark the target field as __percpu and SNMP_UPD_PO_STATS() macro is updated accordingly. All snmp_mib_*() users which used to cast the argument to (void **) are updated to cast it to (void __percpu **). Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Vlad Yasevich <vladislav.yasevich@hp.com> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
2010-02-16xfrm: avoid spinlock in get_acqseq() used by xfrm userjamal
Eric's version fixed it for pfkey. This one is for xfrm user. I thought about amortizing those two get_acqseq()s but it seems reasonable to have two of these sequence spaces for the two different interfaces. cheers, jamal commit d5168d5addbc999c94aacda8f28a4a173756a72b Author: Jamal Hadi Salim <hadi@cyberus.ca> Date: Tue Feb 16 06:51:22 2010 -0500 xfrm: avoid spinlock in get_acqseq() used by xfrm user This is in the same spirit as commit 28aecb9d7728dc26bf03ce7925fe622023a83a2a by Eric Dumazet. Use atomic_inc_return() in get_acqseq() to avoid taking a spinlock Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16Merge 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: (22 commits) be2net: set proper value to version field in req hdr xfrm: Fix xfrm_state_clone leak ipcomp: Avoid duplicate calls to ipcomp_destroy ethtool: allow non-admin user to read GRO settings. ixgbe: fix WOL register setup for 82599 ixgbe: Fix - Do not allow Rx FC on 82598 at 1G due to errata sfc: Fix SFE4002 initialisation mac80211: fix handling of null-rate control in rate_control_get_rate inet: Remove bogus IGMPv3 report handling iwlwifi: fix AMSDU Rx after paged Rx patch tcp: fix ICMP-RTO war via-velocity: Fix races on shared interrupts via-velocity: Take spinlock on set coalesce via-velocity: Remove unused IRQ status parameter from rx_srv and tx_srv rtl8187: Add new device ID iwmc3200wifi: Test of wrong pointer after kzalloc in iwm_mlme_update_bss_table() ath9k: Fix sequence numbers for PAE frames mac80211: fix deferred hardware scan requests iwlwifi: Fix to set correct ht configuration mac80211: Fix probe request filtering in IBSS mode ...
2010-02-16net neigh: Decouple per interface neighbour table controls from binary sysctlsEric W. Biederman
Stop computing the number of neighbour table settings we have by counting the number of binary sysctls. This behaviour was silly and meant that we could not add another neighbour table setting without also adding another binary sysctl. Don't pass the binary sysctl path for neighour table entries into neigh_sysctl_register. These parameters are no longer used and so are just dead code. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16net ipv4: Decouple ipv4 interface parameters from binary sysctl numbersEric W. Biederman
Stop using the binary sysctl enumeartion in sysctl.h as an index into a per interface array. This leads to unnecessary binary sysctl number allocation, and a fragility in data structure and implementation because of unnecessary coupling. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16tunnels: fix netns vs proto registration orderingAlexey Dobriyan
Same stuff as in ip_gre patch: receive hook can be called before netns setup is done, oopsing in net_generic(). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16gre: fix netns vs proto registration orderingAlexey Dobriyan
GRE protocol receive hook can be called right after protocol addition is done. If netns stuff is not yet initialized, we're going to oops in net_generic(). This is remotely oopsable if ip_gre is compiled as module and packet comes at unfortunate moment of module loading. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16xfrm: Fix xfrm_state_clone leakHerbert Xu
xfrm_state_clone calls kfree instead of xfrm_state_put to free a failed state. Depending on the state of the failed state, it can cause leaks to things like module references. All states should be freed by xfrm_state_put past the point of xfrm_init_state. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16ipcomp: Avoid duplicate calls to ipcomp_destroyHerbert Xu
When ipcomp_tunnel_attach fails we will call ipcomp_destroy twice. This may lead to double-frees on certain structures. As there is no reason to explicitly call ipcomp_destroy, this patch removes it from ipcomp*.c and lets the standard xfrm_state destruction take place. This is based on the discovery and patch by Alexey Dobriyan. Tested-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16ethtool: allow non-admin user to read GRO settings.stephen hemminger
Looks like an oversight in GRO design. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
2010-02-15ethtool: reduce stack usageEric Dumazet
dev_ethtool() is currently using 604 bytes of stack, even with gcc-4.4.2 objdump -d vmlinux | scripts/checkstack.pl ... 0xc04bbc33 dev_ethtool [vmlinux]: 604 ... Adding noinline attributes to selected functions can reduce stack usage. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15X25: Dont let x25_bind use addresses containing charactersandrew hendry
Addresses should be all digits. Stops x25_bind using addresses containing characters. Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15X25: Fix x25_create errors for bad protocol and ENOBUFSandrew hendry
alloc_socket failures should return -ENOBUFS a bad protocol should return -EINVAL Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15xfrm: Flushing empty SPD generates false eventsjamal
Observed similar behavior on SPD as previouly seen on SAD flushing.. This fixes it. cheers, jamal commit 428b20432dc31bc2e01a94cd451cf5a2c00d2bf4 Author: Jamal Hadi Salim <hadi@cyberus.ca> Date: Thu Feb 11 05:49:38 2010 -0500 xfrm: Flushing empty SPD generates false events To see the effect make sure you have an empty SPD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm policy flush" You get prompt back in window1 and you see the flush event on window2. With this fix, you still get prompt on window1 but no event on window2. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15xfrm: Flushing empty SAD generates false eventsjamal
To see the effect make sure you have an empty SAD. -On window1 "ip xfrm mon" -on window2 issue "ip xfrm state flush" You get prompt back in window1 and you see the flush event on window2. With this fix, you still get prompt on window1 but no event on window2. I was tempted to return -ESRCH on window1 (which would show "RTNETLINK answers: No such process") but didnt want to change current behavior. cheers, jamal commit 5f3dd4a772326166e1bcf54acc2391df00dc7ab5 Author: Jamal Hadi Salim <hadi@cyberus.ca> Date: Thu Feb 11 04:41:36 2010 -0500 xfrm: Flushing empty SAD generates false events To see the effect make sure you have an empty SAD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm state flush" You get prompt back in window1 and you see the flush event on window2. With this fix, you still get prompt on window1 but no event on window2. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15IPv6: Delete redundant counter of IPSTATS_MIB_REASMFAILSShan Wei
When no more memory can be allocated, fq_find() will return NULL and increase the value of IPSTATS_MIB_REASMFAILS. In this case, ipv6_frag_rcv() also increase the value of IPSTATS_MIB_REASMFAILS. So, the patch deletes redundant counter of IPSTATS_MIB_REASMFAILS in fq_find(). and deletes the unused parameter of idev. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15ethtool: Move n-tuple capability check into set_flagsPeter Waskiewicz
set_flags should check if the underlying device supports n-tuple filter programming before setting the device flags on the netdevice. Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15ethtool: Fix filter addition when caching n-tuple filtersPeter Waskiewicz
We can allow a filter to be added successfully to the underlying hardware, but still return an error if the cached list memory allocation fails. This patch fixes that condition. Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15netfilter: CONFIG_COMPAT: allow delta to exceed 32767Florian Westphal
with 32 bit userland and 64 bit kernels, it is unlikely but possible that insertion of new rules fails even tough there are only about 2000 iptables rules. This happens because the compat delta is using a short int. Easily reproducible via "iptables -m limit" ; after about 2050 rules inserting new ones fails with -ELOOP. Note that compat_delta included 2 bytes of padding on x86_64, so structure size remains the same. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-15netfilter: ebtables: avoid explicit XT_ALIGN() in match/targetsFlorian Westphal
This will cause trouble once CONFIG_COMPAT support is added to ebtables. xt_compat_*_offset() calculate the kernel/userland structure size delta using: XT_ALIGN(size) - COMPAT_XT_ALIGN(size) If the match/target sizes are aligned at registration time, delta is always zero. Should have zero effect for existing systems: xtables uses XT_ALIGN() whenever it deals with match/target sizes. Signed-off-by: Florian Westphal <fwestphal@astaro.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-15netfilter: ebtables: abort if next_offset is too smallFlorian Westphal
next_offset must be > 0, otherwise this loops forever. The offset also contains the size of the ebt_entry structure itself, so anything smaller is invalid. Signed-off-by: Florian Westphal <fwestphal@astaro.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-15netfilter: ctnetlink: add zone supportPatrick McHardy
Parse and dump the conntrack zone in ctnetlink. Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-15netfilter: nf_conntrack: add support for "conntrack zones"Patrick McHardy
Normally, each connection needs a unique identity. Conntrack zones allow to specify a numerical zone using the CT target, connections in different zones can use the same identity. Example: iptables -t raw -A PREROUTING -i veth0 -j CT --zone 1 iptables -t raw -A OUTPUT -o veth1 -j CT --zone 1 Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-15netfilter: nf_conntrack: pass template to l4proto ->error() handlerPatrick McHardy
The error handlers might need the template to get the conntrack zone introduced in the next patches to perform a conntrack lookup. Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-15netfilter: xtables: add const qualifiersJan Engelhardt
This should make it easier to remove redundant arguments later. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-15netfilter: xtables: constify args in compat copying functionsJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-15netfilter: xtables: print details on size mismatchJan Engelhardt
Print which revision has been used and which size are which (kernel/user) for easier debugging. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-15netfilter: iptables: remove unused function argumentsJan Engelhardt
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-15netfilter: xt_recent: inform user when hitcount is too largeJan Engelhardt
It is one of these things that iptables cannot catch and which can cause "Invalid argument" to be printed. Without a hint in dmesg, it is not going to be helpful. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-14mac80211: Fix error introduced in netdev_mc_count() changes.David S. Miller
Commit 4cd24eaf0c6ee7f0242e34ee77ec899f255e66b5 ("net: use netdev_mc_count and netdev_mc_empty when appropriate") added this hunk to net/mac80211/iface.c: __dev_addr_unsync(&local->mc_list, &local->mc_count, - &dev->mc_list, &dev->mc_count); + &dev->mc_list, dev->mc_count); which is definitely not correct, introduced a warning (reported by Stephen Rothwell): net/mac80211/iface.c: In function 'ieee80211_stop': net/mac80211/iface.c:416: warning: passing argument 4 of '__dev_addr_unsync' makes pointer from integer without a cast include/linux/netdevice.h:1967: note: expected 'int *' but argument is of type 'int' and is thus reverted here. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-14net: Fix first line of kernel-doc for a few functionsBen Hutchings
The function name must be followed by a space, hypen, space, and a short description. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-14Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/mac80211/rate.c
2010-02-14Merge branch 'master' of ↵David S. Miller
ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
2010-02-14Merge branch 'master' of ↵David S. Miller
ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2010-02-12rtnetlink: Add VF config code to rtnetlinkWilliams, Mitch A
Add code to allow rtnetlink clients to query and set VF information through the PF driver. Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12udp: remove redundant variableGerrit Renker
The variable 'copied' is used in udp_recvmsg() to emphasize that the passed 'len' is adjusted to fit the actual datagram length. But the same can be done by adjusting 'len' directly. This patch thus removes the indirection. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12dccp: support for passing MSG_TRUNCGerrit Renker
DCCP is datagram-oriented but lacks UDP's support for MSG_TRUNC as defined in recvmsg(2)/recv(2). Hence the following 'Hello world\0' receiver len = recv(fd, buf, 10, MSG_PEEK | MSG_TRUNC); wrongly (always) returns 10, while in UDP it returns 12 as expected. This patch adds the missing MSG_TRUNC support to recvmsg(). Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12xfrm: validate attributesjamal
Some XFRM attributes were not going through basic validation. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12IPv6: remove trivial nested _bh suffixstephen hemminger
Don't need to disable bottom half it is already down in the previous lock. Move some blank lines to group locking in same context. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12IPv6: keep permanent addresses on admin downstephen hemminger
Permanent IPV6 addresses should not be removed when the link is set to admin down, only when device is removed. When link is lost permanent addresses should be marked as tentative so that when link comes back they are subject to duplicate address detection (if DAD was enabled for that address). Other routing systems keep manually configured IPv6 addresses when link is set down. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12ipv6: fib: fix crash when changing large fib while dumping itPatrick McHardy
When the fib size exceeds what can be dumped in a single skb, the dump is suspended and resumed once the last skb has been received by userspace. When the fib is changed while the dump is suspended, the walker might contain stale pointers, causing a crash when the dump is resumed. BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 IP: [<ffffffffa01bce04>] fib6_walk_continue+0xbb/0x124 [ipv6] PGD 5347a067 PUD 65c7067 PMD 0 Oops: 0000 [#1] PREEMPT SMP ... RIP: 0010:[<ffffffffa01bce04>] [<ffffffffa01bce04>] fib6_walk_continue+0xbb/0x124 [ipv6] ... Call Trace: [<ffffffff8104aca3>] ? mutex_spin_on_owner+0x59/0x71 [<ffffffffa01bd105>] inet6_dump_fib+0x11b/0x1b9 [ipv6] [<ffffffff81371af4>] netlink_dump+0x5b/0x19e [<ffffffff8134f288>] ? consume_skb+0x28/0x2a [<ffffffff81373b69>] netlink_recvmsg+0x1ab/0x2c6 [<ffffffff81372781>] ? netlink_unicast+0xfa/0x151 [<ffffffff813483e0>] __sock_recvmsg+0x6d/0x79 [<ffffffff81348a53>] sock_recvmsg+0xca/0xe3 [<ffffffff81066d4b>] ? autoremove_wake_function+0x0/0x38 [<ffffffff811ed1f8>] ? radix_tree_lookup_slot+0xe/0x10 [<ffffffff810b3ed7>] ? find_get_page+0x90/0xa5 [<ffffffff810b5dc5>] ? filemap_fault+0x201/0x34f [<ffffffff810ef152>] ? fget_light+0x2f/0xac [<ffffffff813519e7>] ? verify_iovec+0x4f/0x94 [<ffffffff81349a65>] sys_recvmsg+0x14d/0x223 Store the serial number when beginning to walk the fib and reload pointers when continuing to walk after a change occured. Similar to other dumping functions, this might cause unrelated entries to be missed when entries are deleted. Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12mac80211: fix handling of null-rate control in rate_control_get_rateJuuso Oikarinen
For hardware with IEEE80211_HW_HAS_RATE_CONTROL the rate controller is not initialized. However, calling functions such as ieee80211_beacon_get result in the rate_control_get_rate function getting called, which is accessing (in this case uninitialized) rate control structures unconditionally. Fix by exiting the function before setting the rates for HW with IEEE80211_HW_HAS_RATE_CONTROL set. The initialization of the ieee80211_tx_info struct is intentionally still executed. Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Reviewed-by: Kalle Valo <kalle.valo@nokia.com> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-12dccp: allow probing of CCID-array lengthGerrit Renker
This fixes a problem in the DCCP getsockopt() API: currently there is no way for a user to a priori know the number of built-in CCIDs, other than trying DCCP_SOCKOPT_AVAILABLE_CCIDS in a loop, incrementing the option length until EINVAL is no longer returned. This patch truncates the array to the user-provided length. No copy is made when the length is <= 0. Due to the length restriction in do_dccp_getsockopt() to sizeof(int), the minimum array length remains 4, which is a reasonable default (only 3 CCIDs, CCID-2..4, are currently defined). Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12inet: Remove bogus IGMPv3 report handlingHerbert Xu
Currently we treat IGMPv3 reports as if it were an IGMPv2/v1 report. This is broken as IGMPv3 reports are formatted differently. So we end up suppressing a bogus multicast group (which should be harmless as long as the leading reserved field is zero). In fact, IGMPv3 does not allow membership report suppression so we should simply ignore IGMPv3 membership reports as a host. This patch does exactly that. I kept the case statement for it so people won't accidentally add it back thinking that we overlooked this case. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12net: use netdev_mc_count and netdev_mc_empty when appropriateJiri Pirko
This patch replaces dev->mc_count in all drivers (hopefully I didn't miss anything). Used spatch and did small tweaks and conding style changes when it was suitable. Jirka Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12netfilter: don't use INIT_RCU_HEAD()Alexey Dobriyan
call_rcu() will unconditionally reinitialize RCU head anyway. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-11ethtool: Use explicit designated initializers for .cmdRoland Dreier
Initialize the .cmd member of various ethtool using a designated struct initializer rather. This makes things a teeny bit more robust, although the chance of a struct layout changing is extremely remote, and also makes the code a little easier to read. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-11netfilter: xtables: fix mangle tablesAlexey Dobriyan
In POST_ROUTING hook, calling dev_net(in) is going to oops. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
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