Hannes Frederic Sowa 1280938465 inet: limit length of fragment queue hash table bucket lists ... [ Upstream commit 5a3da1fe95 ] This patch introduces a constant limit of the fragment queue hash table bucket list lengths. Currently the limit 128 is choosen somewhat arbitrary and just ensures that we can fill up the fragment cache with empty packets up to the default ip_frag_high_thresh limits. It should just protect from list iteration eating considerable amounts of cpu. If we reach the maximum length in one hash bucket a warning is printed. This is implemented on the caller side of inet_frag_find to distinguish between the different users of inet_fragment.c. I dropped the out of memory warning in the ipv4 fragment lookup path, because we already get a warning by the slab allocator. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Jesper Dangaard Brouer <jbrouer@redhat.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-03-28 12:11:54 -07:00
..
9p	9p: Reduce object size with CONFIG_NET_9P_DEBUG	2012-01-05 10:51:44 -06:00
bluetooth	Bluetooth: Change signature of smp_conn_security()	2012-10-02 10:30:34 -07:00
caif	caif-hsi: Add RX flip buffer	2012-02-04 16:06:28 -05:00
irda
iucv	af_iucv: add shutdown for HS transport	2012-03-07 22:52:24 -08:00
netfilter	netfilter: nf_conntrack: fix racy timer handling with reliable events	2012-10-21 09:28:00 -07:00
netns	BUG: headers with BUG/BUG_ON etc. need linux/bug.h	2012-03-04 17:54:34 -05:00
nfc	NFC: NCI code identation fixes	2012-03-06 15:16:25 -05:00
phonet
sctp	sctp: check cached dst before using it	2012-05-10 23:15:47 -04:00
tc_act
act_api.h
addrconf.h	ipv6: Remove never used function inet6_ac_check().	2012-02-01 16:14:17 -05:00
af_ieee802154.h
af_rxrpc.h
af_unix.h	switch unix_sock to struct path	2012-03-20 21:29:41 -04:00
ah.h
arp.h	ipv4: Eliminate spurious argument to __ipv4_neigh_lookup	2012-02-15 17:48:35 -05:00
atmclip.h	atm: clip: Use device neigh support on top of "arp_tbl".	2011-11-30 18:51:03 -05:00
ax25.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
ax88796.h
cfg80211-wext.h	cfg80211: remove unused wext handler exports	2011-08-08 14:26:29 -04:00
cfg80211.h	mac80211: verify that skb data is present	2012-11-17 13:16:11 -08:00
checksum.h
cipso_ipv4.h	cipso: handle CIPSO options correctly when NetLabel is disabled	2012-07-16 09:03:44 -07:00
cls_cgroup.h
compat.h	net: get rid of some pointless casts to sockaddr	2012-03-11 19:11:22 -07:00
datalink.h
dcbevent.h	dcb: Add stub routines for !CONFIG_DCB	2011-10-06 15:49:51 -04:00
dcbnl.h	net: dcb: getnumtcs()/setnumtcs() should return an int	2012-03-02 18:16:49 -08:00
dn.h	decnet: net/dn.h needs net/flow.h	2012-02-15 16:37:44 -05:00
dn_dev.h
dn_fib.h
dn_neigh.h
dn_nsp.h
dn_route.h
dsa.h	dsa: Include linux/if_ether.h to fix build error	2011-12-01 11:41:06 -05:00
dsfield.h
dst.h	ipv6: fix incorrect ipsec fragment	2012-06-10 00:36:15 +09:00
dst_ops.h	net: Rename the dst_opt default_mtu method to mtu	2011-11-26 14:29:50 -05:00
esp.h
ethoc.h
fib_rules.h
flow.h	ipv4: reset flowi parameters on route connect	2012-02-04 19:29:48 -05:00
flow_keys.h	flow_dissector: use a 64bit load/store	2011-11-29 13:17:03 -05:00
garp.h
gen_stats.h
genetlink.h	net: Deinline __nlmsg_put and genlmsg_put. -7k code on i386 defconfig.	2012-01-30 15:22:06 -05:00
gre.h
icmp.h	ipv4: reduce percpu needs for icmpmsg mibs	2011-11-09 16:04:20 -05:00
ieee80211_radiotap.h	wireless: move ieee80211chan2mhz macro	2011-11-11 12:32:50 -05:00
ieee802154.h	6LoWPAN: add fragmentation support	2011-11-14 00:19:42 -05:00
ieee802154_netdev.h
if_inet6.h	ipv6: updates to privacy addresses per RFC 4941.	2011-08-01 18:05:00 -07:00
inet6_connection_sock.h
inet6_hashtables.h	ipv6: use a stronger hash for tcp	2013-02-28 06:59:06 -08:00
inet_common.h
inet_connection_sock.h	inet: Fix kmemleak in tcp_v4/6_syn_recv_sock and dccp_v4/6_request_recv_sock	2013-01-11 09:07:14 -08:00
inet_ecn.h	inet: add rfc 3168 extract in front of INET_ECN_encapsulate()	2011-10-22 01:25:23 -04:00
inet_frag.h	inet: limit length of fragment queue hash table bucket lists	2013-03-28 12:11:54 -07:00
inet_hashtables.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
inet_sock.h	ipv6: use a stronger hash for tcp	2013-02-28 06:59:06 -08:00
inet_timewait_sock.h	inet: remove rcu protection on tw_net	2011-12-14 13:34:55 -05:00
inetpeer.h	inetpeer: fix a race in inetpeer_gc_worker()	2012-07-16 09:03:45 -07:00
ip.h	ipv4: Make ip_call_ra_chain() return bool.	2012-03-09 14:34:50 -08:00
ip6_checksum.h
ip6_fib.h	ipv6: clean up rt6_clean_expires	2012-04-17 22:31:59 -04:00
ip6_route.h	Merge branch 'nf-next' of git://1984.lsi.us.es/net-next	2011-12-25 02:21:45 -05:00
ip6_tunnel.h
ip_fib.h	ipv4: fix definition of FIB_TABLE_HASHSZ	2013-03-28 12:11:53 -07:00
ip_vs.h	ipvs: fix oops on NAT reply in br_nf context	2012-10-21 09:28:00 -07:00
ipcomp.h
ipconfig.h
ipip.h
ipv6.h	ipv6: use a stronger hash for tcp	2013-02-28 06:59:06 -08:00
ipx.h
iw_handler.h
lapb.h	wan: make LAPB callbacks const	2011-09-16 19:20:20 -04:00
lib80211.h	include: replace linux/module.h with "struct module" wherever possible	2011-10-31 19:32:32 -04:00
llc.h	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h
llc_if.h
llc_pdu.h
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
mac80211.h	mac80211: Convert WARN_ON to WARN_ON_ONCE	2012-04-09 15:54:48 -04:00
mip6.h
mld.h
ndisc.h	ipv6: Remove neigh argument from ndisc_send_redirect()	2012-01-27 21:00:08 -05:00
neighbour.h	ipv6: Use universal hash for NDISC.	2011-12-28 15:06:58 -05:00
net_namespace.h	net: use IS_ENABLED(CONFIG_IPV6)	2011-12-11 18:25:16 -05:00
net_ratelimit.h
netdma.h
netevent.h
netlabel.h	doc: Update the email address for Paul Moore in various source files	2011-08-01 17:58:33 -07:00
netlink.h	net: Deinline __nlmsg_put and genlmsg_put. -7k code on i386 defconfig.	2012-01-30 15:22:06 -05:00
netprio_cgroup.h	netprio_cgroup: fix wrong memory access when NETPRIO_CGROUP=m	2012-02-10 15:08:57 -05:00
netrom.h
nexthop.h
nl802154.h
p8022.h
ping.h
pkt_cls.h
pkt_sched.h
protocol.h	net: use IS_ENABLED(CONFIG_IPV6)	2011-12-11 18:25:16 -05:00
psnap.h
raw.h
rawv6.h
red.h	net_sched: red: Make minor corrections to comments	2012-04-16 23:53:11 -04:00
regulatory.h	cfg80211: pass DFS region to drivers through reg_notifier()	2011-11-21 16:20:41 -05:00
request_sock.h	tcp: Change possible SYN flooding messages	2011-09-15 14:49:43 -04:00
rose.h
route.h	ipv4: reset flowi parameters on route connect	2012-02-04 19:29:48 -05:00
rtnetlink.h	rtnetlink: Fix problem with buffer allocation	2012-02-21 16:56:45 -05:00
sch_generic.h	bonding: Fix corrupted queue_mapping	2012-07-16 09:03:47 -07:00
scm.h	af_netlink: force credentials passing [CVE-2012-3520]	2012-10-02 10:29:37 -07:00
secure_seq.h	tcp: add const qualifiers where possible	2011-10-21 05:22:42 -04:00
slhc_vj.h
snmp.h	Merge branch 'for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2012-01-09 13:08:28 -08:00
sock.h	net: fix a compile error when SOCK_REFCNT_DEBUG is enabled	2013-02-28 06:59:06 -08:00
stp.h
tcp.h	tcp: implement RFC 5961 3.2	2013-01-11 09:07:14 -08:00
tcp_memcontrol.h	cgroup: remove cgroup_subsys argument from callbacks	2012-02-02 09:20:22 -08:00
tcp_states.h
timewait_sock.h	BUG: headers with BUG/BUG_ON etc. need linux/bug.h	2012-03-04 17:54:34 -05:00
transp_v6.h	net: relax PKTINFO non local ipv6 udp xmit check	2011-08-30 17:39:01 -04:00
udp.h	BUG: headers with BUG/BUG_ON etc. need linux/bug.h	2012-03-04 17:54:34 -05:00
udplite.h	net: ipv4: Standardize prefixes for message logging	2012-03-12 17:05:21 -07:00
wext.h
wimax.h
wpan-phy.h	BUG: headers with BUG/BUG_ON etc. need linux/bug.h	2012-03-04 17:54:34 -05:00
x25.h
x25device.h
xfrm.h	xfrm: Workaround incompatibility of ESN and async crypto	2012-10-13 05:38:40 +09:00