The rtnl is held in ieee80211_sta.c to prevent some potential
configuration races with userspace. Unfortunately, it also has the
potential for deadlocks on interface down. This patch removes the
rtnl locking to eliminate the deadlocks.
Signed-off-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
net/mac80211/ieee80211.c: In function ieee80211_register_hw:
net/mac80211/ieee80211.c:4989: warning: comparison of distinct pointer types lacks a cast
Size of ieee80211_tx_status_rtap_hdr structure will never be greater than
unsigned int.
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Allow kicking listeners out of a multicast group when necessary
(for example if that group is going to be removed.)
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Patrick McHardy <kaber@trash.net>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow changing the number of groups for a netlink family
after it has been created, use RCU to protect the listeners
bitmap keeping netlink_has_listeners() lock-free.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Patrick McHardy <kaber@trash.net>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
The rfkill state Sysfs attribute should be made writable,
we already pass the argument for the store handler,
so we only need to update the permissions flag.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (24 commits)
[NETFILTER]: xt_connlimit needs to depend on nf_conntrack
[NETFILTER]: ipt_iprange.h must #include <linux/types.h>
[IrDA]: Fix IrDA build failure
[ATM]: nicstar needs virt_to_bus
[NET]: move __dev_addr_discard adjacent to dev_addr_discard for readability
[NET]: merge dev_unicast_discard and dev_mc_discard into one
[NET]: move dev_mc_discard from dev_mcast.c to dev.c
[NETLINK]: negative groups in netlink_setsockopt
[PPPOL2TP]: Reset meta-data in xmit function
[PPPOL2TP]: Fix use-after-free
[PKT_SCHED]: Some typo fixes in net/sched/Kconfig
[XFRM]: Fix crash introduced by struct dst_entry reordering
[TCP]: remove unused argument to cong_avoid op
[ATM]: [idt77252] Rename CONFIG_ATM_IDT77252_SEND_IDLE to not resemble a Kconfig variable
[ATM]: [drivers] ioremap balanced with iounmap
[ATM]: [lanai] sram_test_word() must be __devinit
[ATM]: [nicstar] Replace C code with call to ARRAY_SIZE() macro.
[ATM]: Eliminate dead config variable CONFIG_BR2684_FAST_TRANS.
[ATM]: Replacing kmalloc/memset combination with kzalloc.
[NET]: gen_estimator deadlock fix
...
With NF_CONNTRACK=n, NETFILTER_XT_MATCH_CONNLIMIT=m I get the
following errors on current git:
CC [M] net/netfilter/xt_connlimit.o
In file included from net/netfilter/xt_connlimit.c:27:
include/net/netfilter/nf_conntrack.h💯 error: field 'ct_general' has incomplete type
include/net/netfilter/nf_conntrack.h: In function 'nf_ct_get':
include/net/netfilter/nf_conntrack.h:164: error: 'const struct sk_buff' has no member named 'nfct'
include/net/netfilter/nf_conntrack.h: In function 'nf_ct_put':
include/net/netfilter/nf_conntrack.h:171: warning: implicit declaration of function 'nf_conntrack_put'
include/net/netfilter/nf_conntrack.h: In function 'nf_ct_is_untracked':
include/net/netfilter/nf_conntrack.h:253: error: 'const struct sk_buff' has no member named 'nfct'
In file included from net/netfilter/xt_connlimit.c:28:
include/net/netfilter/nf_conntrack_core.h: In function 'nf_conntrack_confirm':
include/net/netfilter/nf_conntrack_core.h:68: error: 'struct sk_buff' has no member named 'nfct'
Adding a dependency in Kconfig fixes this.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When having built-in IrDA, we hit the following error:
`irda_sysctl_unregister' referenced in section `.init.text' of
net/built-in.o: defined in discarded section `.exit.text' of
net/built-in.o
`irda_proc_unregister' referenced in section `.init.text' of
net/built-in.o: defined in discarded section `.exit.text' of
net/built-in.o
`irsock_cleanup' referenced in section `.init.text' of net/built-in.o:
defined in discarded section `.exit.text' of net/built-in.o
`irttp_cleanup' referenced in section `.init.text' of net/built-in.o:
defined in discarded section `.exit.text' of net/built-in.o
`iriap_cleanup' referenced in section `.init.text' of net/built-in.o:
defined in discarded section `.exit.text' of net/built-in.o
`irda_device_cleanup' referenced in section `.init.text' of
net/built-in.o: defined in discarded section `.exit.text' of
net/built-in.o
`irlap_cleanup' referenced in section `.init.text' of net/built-in.o:
defined in discarded section `.exit.text' of net/built-in.o
`irlmp_cleanup' referenced in section `.init.text' of net/built-in.o:
defined in discarded section `.exit.text' of net/built-in.o
make[1]: *** [.tmp_vmlinux1] Error 1
make: *** [_all] Error 2
This is due to the irda_init fix recently added, where we call __exit
routines from an __init one. It is a build failure that I didn't catch
because it doesn't show up when building IrDA as a module. My apologies
for that.
The following patch fixes that failure and is against your net-2.6
tree. I hope it can make it to the merge window, and stable@kernel.org
is CCed on this mail.
Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
this two functions could share the dev->_xmit_lock acquired context.
Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Because this function is only called by unregister_netdevice,
this moving could make this non-global function static,
and also remove its declaration in netdevice.h;
Any further, function __dev_addr_discard is also just called by
dev_mc_discard and dev_unicast_discard, keeping this two functions
both in one c file could make __dev_addr_discard also static
and remove its declaration in netdevice.h;
Futhermore, the sequential call to dev_unicast_discard and then
dev_mc_discard in unregister_netdevice have a similar mechanism that:
(netif_tx_lock_bh / __dev_addr_discard / netif_tx_unlock_bh),
they should merged into one to eliminate duplicates in acquiring and
releasing the dev->_xmit_lock, this would be done in my following patch.
Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Reading netlink_setsockopt it's not immediately clear why there isn't a
bug when you pass in negative numbers, the reason being that the >=
comparison is really unsigned although 'val' is signed because
nlk->ngroups is unsigned. Make 'val' unsigned too.
[ Update the get_user() cast to match. --DaveM ]
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
XFRM expects xfrm_dst->u.next to be same pointer as dst->next, which
was broken by the dst_entry reordering in commit 1e19e02c~, causing
an oops in xfrm_bundle_ok when walking the bundle upwards.
Kill xfrm_dst->u.next and change the only user to use dst->next instead.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
None of the existing TCP congestion controls use the rtt value pased
in the ca_ops->cong_avoid interface. Which is lucky because seq_rtt
could have been -1 when handling a duplicate ack.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
-Fixes ABBA deadlock noted by Patrick McHardy <kaber@trash.net>:
> There is at least one ABBA deadlock, est_timer() does:
> read_lock(&est_lock)
> spin_lock(e->stats_lock) (which is dev->queue_lock)
>
> and qdisc_destroy calls htb_destroy under dev->queue_lock, which
> calls htb_destroy_class, then gen_kill_estimator and this
> write_locks est_lock.
To fix the ABBA deadlock the rate estimators are now kept on an rcu list.
-The est_lock changes the use from protecting the list to protecting
the update to the 'bstat' pointer in order to avoid NULL dereferencing.
-The 'interval' member of the gen_estimator structure removed as it is
not needed.
Signed-off-by: Ranko Zivojnovic <ranko@spidernet.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, a function misnamed ieee80211_init_client() is used to handle
regulatory domain control. It is called from
ieee80211_register_hwmode(), which typically runs 2 or 3 times
(802.11a/b/g), but each time it iterates over all the modes.
This patch cleans this up and removes the confusion:
ieee80211_init_client was effectively renamed to
ieee80211_set_default_regdomain and is now run on a per-mode basis
(doesn't have to deal with netdevs). I also moved the regdomain handling
code into its own file and added some documentation.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Acked-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
David S. Miller
Michael Wu
Jiri Benc
Johannes Berg
Ivo van Doorn
Linus Torvalds
Jeremy Fitzhardinge
Cornelia Huck
Samuel Ortiz
Denis Cheng
Gabriel Craciunescu
Patrick McHardy
Stephen Hemminger
Robert P. J. Day
vignesh babu
Ranko Zivojnovic
Daniel Drake