Pablo Neira Ayuso ff491a7334 netlink: change return-value logic of netlink_broadcast() ... Currently, netlink_broadcast() reports errors to the caller if no messages at all were delivered: 1) If, at least, one message has been delivered correctly, returns 0. 2) Otherwise, if no messages at all were delivered due to skb_clone() failure, return -ENOBUFS. 3) Otherwise, if there are no listeners, return -ESRCH. With this patch, the caller knows if the delivery of any of the messages to the listeners have failed: 1) If it fails to deliver any message (for whatever reason), return -ENOBUFS. 2) Otherwise, if all messages were delivered OK, returns 0. 3) Otherwise, if no listeners, return -ESRCH. In the current ctnetlink code and in Netfilter in general, we can add reliable logging and connection tracking event delivery by dropping the packets whose events were not successfully delivered over Netlink. Of course, this option would be settable via /proc as this approach reduces performance (in terms of filtered connections per seconds by a stateful firewall) but providing reliable logging and event delivery (for conntrackd) in return. This patch also changes some clients of netlink_broadcast() that may report ENOBUFS errors via printk. This error handling is not of any help. Instead, the userspace daemons that are listening to those netlink messages should resync themselves with the kernel-side if they hit ENOBUFS. BTW, netlink_broadcast() clients include those that call cn_netlink_send(), nlmsg_multicast() and genlmsg_multicast() since they internally call netlink_broadcast() and return its error value. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2009-02-05 23:56:36 -08:00
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lzo
reed_solomon
zlib_deflate
zlib_inflate
.gitignore
argv_split.c
audit.c
bcd.c
bitmap.c
bitrev.c
bug.c
bust_spinlocks.c
check_signature.c
cmdline.c
cpumask.c
crc-ccitt.c
crc-itu-t.c
crc-t10dif.c
crc7.c
crc16.c
crc32.c
crc32defs.h
ctype.c
debug_locks.c
debugobjects.c
dec_and_lock.c
devres.c
div64.c
dump_stack.c
dynamic_printk.c
extable.c
fault-inject.c
find_last_bit.c
find_next_bit.c
gen_crc32table.c
genalloc.c
halfmd4.c
hexdump.c
hweight.c
idr.c	lib/idr.c: use kmem_cache_zalloc() for the idr_layer cache	2009-01-15 16:39:40 -08:00
inflate.c
int_sqrt.c
iomap.c
iomap_copy.c
iommu-helper.c
ioremap.c
irq_regs.c
is_single_threaded.c
kasprintf.c
Kconfig
Kconfig.debug	Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-01-26 09:47:56 -08:00
Kconfig.kgdb
kernel_lock.c
klist.c
kobject.c
kobject_uevent.c	netlink: change return-value logic of netlink_broadcast()	2009-02-05 23:56:36 -08:00
kref.c
libcrc32c.c
list_debug.c
lmb.c
locking-selftest-hardirq.h
locking-selftest-mutex.h
locking-selftest-rlock-hardirq.h
locking-selftest-rlock-softirq.h
locking-selftest-rlock.h
locking-selftest-rsem.h
locking-selftest-softirq.h
locking-selftest-spin-hardirq.h
locking-selftest-spin-softirq.h
locking-selftest-spin.h
locking-selftest-wlock-hardirq.h
locking-selftest-wlock-softirq.h
locking-selftest-wlock.h
locking-selftest-wsem.h
locking-selftest.c
Makefile
parser.c
percpu_counter.c
plist.c
prio_heap.c
prio_tree.c
proportions.c
radix-tree.c
random32.c
ratelimit.c
rbtree.c	rbtree: add const qualifier to some functions	2009-01-10 06:04:33 -08:00
reciprocal_div.c
rwsem-spinlock.c
rwsem.c
scatterlist.c
sha1.c
show_mem.c
smp_processor_id.c	cpumask: convert lib/smp_processor_id to new cpumask ops	2009-01-30 15:47:34 +01:00
sort.c	generic swap(): lib/sort.c: rename swap to swap_func	2009-01-08 08:31:14 -08:00
spinlock_debug.c
string.c
string_helpers.c
swiotlb.c
syscall.c
textsearch.c
ts_bm.c
ts_fsm.c
ts_kmp.c
vsprintf.c