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Eric Dumazet 719f835853 udp: add rehash on connect() ... commit 30fff923 introduced in linux-2.6.33 (udp: bind() optimisation) added a secondary hash on UDP, hashed on (local addr, local port). Problem is that following sequence : fd = socket(...) connect(fd, &remote, ...) not only selects remote end point (address and port), but also sets local address, while UDP stack stored in secondary hash table the socket while its local address was INADDR_ANY (or ipv6 equivalent) Sequence is : - autobind() : choose a random local port, insert socket in hash tables [while local address is INADDR_ANY] - connect() : set remote address and port, change local address to IP given by a route lookup. When an incoming UDP frame comes, if more than 10 sockets are found in primary hash table, we switch to secondary table, and fail to find socket because its local address changed. One solution to this problem is to rehash datagram socket if needed. We add a new rehash(struct socket *) method in "struct proto", and implement this method for UDP v4 & v6, using a common helper. This rehashing only takes care of secondary hash table, since primary hash (based on local port only) is not changed. Reported-by: Krzysztof Piotr Oledzki <ole@ans.pl> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Tested-by: Krzysztof Piotr Oledzki <ole@ans.pl> Signed-off-by: David S. Miller <davem@davemloft.net>		15 years ago
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9p	net/9p: Implement TXATTRCREATE 9p call	15 years ago
bluetooth	Bluetooth: Use 3-DH5 payload size for default ERTM max PDU size	15 years ago
caif	caif-driver: Add CAIF-SPI Protocol driver.	15 years ago
irda	irda: Use __packed annotation instead IRDA_PACKED macro	15 years ago
iucv	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
netfilter	netfilter: nf_nat: make unique_tuple return void	15 years ago
netns	ipv6: ip6mr: support multiple tables	15 years ago
phonet	phonet: use call_rcu for phonet device free	15 years ago
sctp	net: use __packed annotation	15 years ago
tc_act	net sched: fix race in mirred device removal	15 years ago
tipc	tipc: Update commenting in TIPC API	15 years ago
act_api.h	pkt_sched: gen_kill_estimator() rcu fixes	15 years ago
addrconf.h	net: Add checking to rcu_dereference() primitives	15 years ago
af_ieee802154.h	…
af_rxrpc.h	…
af_unix.h	af_unix: Allow credentials to work across user and pid namespaces.	15 years ago
ah.h	net: cleanup include/net	15 years ago
arp.h	…
atmclip.h	…
ax25.h	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
ax88796.h	…
cfg80211.h	cfg80211: fix dev <-> wiphy typo	15 years ago
checksum.h	…
cipso_ipv4.h	…
cls_cgroup.h	cls_cgroup: Fix rcu lockdep warning	15 years ago
compat.h	net: fix compat_sys_recvmmsg parameter type	15 years ago
datalink.h	…
dcbnl.h	…
dn.h	…
dn_dev.h	net: use __packed annotation	15 years ago
dn_fib.h	decnet: Remove unused FIB metric macros.	15 years ago
dn_neigh.h	…
dn_nsp.h	net: use __packed annotation	15 years ago
dn_route.h	net-next: remove useless union keyword	15 years ago
dsa.h	…
dsfield.h	…
dst.h	net: check for refcount if pop a stacked dst_entry	15 years ago
dst_ops.h	…
esp.h	…
ethoc.h	…
fib_rules.h	net: fib_rules: mark arguments to fib_rules_register const and __net_initdata	15 years ago
flow.h	flow: virtualize flow cache entry methods	15 years ago
garp.h	…
gen_stats.h	net: cleanup include/net	15 years ago
genetlink.h	net: CONFIG_NET_NS reduction	15 years ago
icmp.h	ipv4: raw: move struct raw_sock and raw_sk() to include/net/raw.h	15 years ago
ieee80211_radiotap.h	wireless: update radiotap parser	15 years ago
ieee802154.h	…
ieee802154_netdev.h	ieee802154: add an mlme_ops call to retrieve PHY object	15 years ago
if_inet6.h	ipv6: Replace inet6_ifaddr->dead with state	15 years ago
inet6_connection_sock.h	net: replace ipfragok with skb->local_df	15 years ago
inet6_hashtables.h	tcp: Fix a connect() race with timewait sockets	15 years ago
inet_common.h	inet, inet6: make tcp_sendmsg() and tcp_sendpage() through inet_sendmsg() and inet_sendpage()	15 years ago
inet_connection_sock.h	net: replace ipfragok with skb->local_df	15 years ago
inet_ecn.h	…
inet_frag.h	fragment: add fast path for in-order fragments	15 years ago
inet_hashtables.h	tcp: Fix a connect() race with timewait sockets	15 years ago
inet_sock.h	net - IP_NODEFRAG option for IPv4 socket	15 years ago
inet_timewait_sock.h	net: suppress RCU lockdep false positive in twsk_net()	15 years ago
inetpeer.h	inetpeer: restore small inet_peer structures	15 years ago
ip.h	snmp: 64bit ipstats_mib for all arches	15 years ago
ip6_checksum.h	…
ip6_fib.h	net-next: remove useless union keyword	15 years ago
ip6_route.h	net: sk_dst_cache RCUification	15 years ago
ip6_tunnel.h	net: use __packed annotation	15 years ago
ip_fib.h	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	15 years ago
ip_vs.h	ipvs: fix active FTP	15 years ago
ipcomp.h	percpu: add __percpu sparse annotations to net	15 years ago
ipconfig.h	…
ipip.h	net-next: remove useless union keyword	15 years ago
ipv6.h	snmp: 64bit ipstats_mib for all arches	15 years ago
ipx.h	net: use __packed annotation	15 years ago
iw_handler.h	include/net/iw_handler.h: Use SIOCIWFIRST not SIOCSIWCOMMIT in comment	15 years ago
lapb.h	…
lib80211.h	lib80211: remove unused host_build_iv option	15 years ago
llc.h	llc: convert llc_sap_list to RCU	15 years ago
llc_c_ac.h	…
llc_c_ev.h	…
llc_c_st.h	…
llc_conn.h	llc: use a device based hash table to speed up multicast delivery	15 years ago
llc_if.h	…
llc_pdu.h	…
llc_s_ac.h	…
llc_s_ev.h	…
llc_s_st.h	…
llc_sap.h	…
mac80211.h	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem	15 years ago
mip6.h	net: use __packed annotation	15 years ago
mld.h	ipv6 mcast: Introduce include/net/mld.h for MLD definitions.	15 years ago
ndisc.h	net: use __packed annotation	15 years ago
neighbour.h	net/neighbour.h: fix typo	15 years ago
net_namespace.h	nsproxy: remove INIT_NSPROXY()	15 years ago
netdma.h	…
netevent.h	…
netlabel.h	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
netlink.h	net: Fix a typo in netlink.h	15 years ago
netrom.h	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	15 years ago
nexthop.h	…
nl802154.h	…
p8022.h	…
pkt_cls.h	net: rename skb->iif to skb->skb_iif	15 years ago
pkt_sched.h	net: Define accessors to manipulate QDISC_STATE_RUNNING	15 years ago
protocol.h	net: drop capability from protocol definitions	15 years ago
psnap.h	…
raw.h	ipv4: ipmr: support multiple tables	15 years ago
rawv6.h	…
red.h	net: cleanup include/net	15 years ago
regulatory.h	wireless: only use alpha2 regulatory information from country IE	15 years ago
request_sock.h	tcp: account SYN-ACK timeouts & retransmissions	15 years ago
rose.h	…
route.h	net-next: remove useless union keyword	15 years ago
rtnetlink.h	rtnetlink: support specifying device flags on device creation	15 years ago
sch_generic.h	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	15 years ago
scm.h	scm: Capture the full credentials of the scm sender.	15 years ago
slhc_vj.h	…
snmp.h	snmp: 64bit ipstats_mib for all arches	15 years ago
sock.h	udp: add rehash on connect()	15 years ago
stp.h	…
tcp.h	tcp: Combat per-cpu skew in orphan tests.	15 years ago
tcp_states.h	…
timewait_sock.h	…
transp_v6.h	IPv6: Add dontfrag argument to relevant functions	15 years ago
udp.h	udp: add rehash on connect()	15 years ago
udplite.h	…
wext.h	wext: refactor	16 years ago
wimax.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	15 years ago
wpan-phy.h	ieee802154: add support for creation/removal of logic interfaces	15 years ago
x25.h	X25: Move accept approve flag to bitfield	15 years ago
x25device.h	X25: Add if_x25.h and x25 to device identifiers	15 years ago
xfrm.h	xfrm: fix XFRMA_MARK extraction in xfrm_mark_get	15 years ago