Cong Wang e2ef754453 net_sched: fix reference counting of tc filter chain ... This patch fixes the following ugliness of tc filter chain refcnt: a) tp proto should hold a refcnt to the chain too. This significantly simplifies the logic. b) Chain 0 is no longer special, it is created with refcnt=1 like any other chains. All the ugliness in tcf_chain_put() can be gone! c) No need to handle the flushing oddly, because block still holds chain 0, it can not be released, this guarantees block is the last user. d) The race condition with RCU callbacks is easier to handle with just a rcu_barrier(). Much easier to understand, nothing to hide. Thanks to the previous patch. Please see also the comments in code. e) Make the code understandable by humans, much less error-prone. Fixes: 744a4cf63e ("net: sched: fix use after free when tcf_chain_destroy is called multiple times") Fixes: 5bc1701881 ("net: sched: introduce multichain support for filters") Cc: Jiri Pirko <jiri@mellanox.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-09-12 20:41:02 -07:00
..
6lowpan	6lowpan: Don't set IFF_NO_QUEUE	2017-04-12 22:02:40 +02:00
9p	Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-07-15 12:00:42 -07:00
802	net: introduce __skb_put_[zero, data, u8]	2017-06-20 13:30:14 -04:00
8021q	net: add netlink_ext_ack argument to rtnl_link_ops.validate	2017-06-26 23:13:22 -04:00
appletalk	networking: make skb_push & __skb_push return void pointers	2017-06-16 11:48:40 -04:00
atm	net: atm: make atmdev_ops const	2017-08-09 22:43:50 -07:00
ax25	net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t	2017-07-04 22:35:19 +01:00
batman-adv	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-08-09 16:28:45 -07:00
bluetooth	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-09-06 14:45:08 -07:00
bpf	bpf: Align packet data properly in program testing framework.	2017-05-02 11:46:28 -04:00
bridge	bridge: switchdev: Use an helper to clear forward mark	2017-09-05 11:51:47 -07:00
caif	net: convert sock.sk_wmem_alloc from atomic_t to refcount_t	2017-07-01 07:39:08 -07:00
can	rtnetlink: make rtnl_register accept a flags parameter	2017-08-09 16:57:38 -07:00
ceph	libceph: make RECOVERY_DELETES feature create a new interval	2017-08-01 16:46:45 +02:00
core	xdp: implement xdp_redirect_map for generic XDP	2017-09-11 14:33:00 -07:00
dcb	rtnetlink: make rtnl_register accept a flags parameter	2017-08-09 16:57:38 -07:00
dccp	net: dccp: Add handling of IPV6_PKTOPTIONS to dccp_v6_do_rcv()	2017-08-31 11:43:47 -07:00
decnet	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2017-09-03 17:08:42 -07:00
dns_resolver
dsa	net: dsa: tag_brcm: Set output queue from skb queue mapping	2017-09-05 11:53:34 -07:00
ethernet	networking: make skb_push & __skb_push return void pointers	2017-06-16 11:48:40 -04:00
hsr	net/hsr: Check skb_put_padto() return value	2017-08-22 13:40:23 -07:00
ieee802154	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-09-05 20:03:35 -07:00
ife
ipv4	tcp/dccp: remove reqsk_put() from inet_child_forget()	2017-09-12 20:38:35 -07:00
ipv6	ipv6: sr: remove duplicate routing header type check	2017-09-11 14:34:10 -07:00
ipx	net, ipx: convert ipx_route.refcnt from atomic_t to refcount_t	2017-07-04 22:35:17 +01:00
iucv	iucv: Convert sk_wmem_alloc accesses to refcount_t.	2017-07-03 02:31:22 -07:00
kcm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-09-01 17:42:05 -07:00
key	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-08-15 20:23:23 -07:00
l2tp	l2tp: pass tunnel pointer to ->session_create()	2017-09-03 11:04:21 -07:00
l3mdev
lapb	net, lapb: convert lapb_cb.refcnt from atomic_t to refcount_t	2017-07-04 22:35:16 +01:00
llc	net, llc: convert llc_sap.refcnt from atomic_t to refcount_t	2017-07-04 22:35:15 +01:00
mac80211	mac80211: fix deadlock in driver-managed RX BA session start	2017-09-06 15:22:02 +02:00
mac802154	net: Fix inconsistent teardown and release of private netdev state.	2017-06-07 15:53:24 -04:00
mpls	rtnetlink: make rtnl_register accept a flags parameter	2017-08-09 16:57:38 -07:00
ncsi	net/ncsi: fix ncsi_vlan_rx_{add,kill}_vid references	2017-09-05 09:11:45 -07:00
netfilter	netfilter: xt_hashlimit: fix build error caused by 64bit division	2017-09-08 18:55:53 +02:00
netlabel	netlink: pass extended ACK struct to parsing functions	2017-04-13 13:58:22 -04:00
netlink	netlink: access nlk groups safely in netlink bind and getname	2017-09-06 21:22:54 -07:00
netrom	net, netrom: convert nr_node.refcount from atomic_t to refcount_t	2017-07-04 22:35:17 +01:00
nfc	NFC: Add sockaddr length checks before accessing sa_family in bind handlers	2017-06-23 00:38:31 +02:00
nsh	nsh: add GSO support	2017-08-29 15:16:52 -07:00
openvswitch	openvswitch: Fix an error handling path in 'ovs_nla_init_match_and_action()'	2017-09-12 20:37:31 -07:00
packet	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-09-01 17:42:05 -07:00
phonet	rtnetlink: make rtnl_register accept a flags parameter	2017-08-09 16:57:38 -07:00
psample	networking: make skb_put & friends return void pointers	2017-06-16 11:48:39 -04:00
qrtr	rtnetlink: make rtnl_register accept a flags parameter	2017-08-09 16:57:38 -07:00
rds	rds: Fix incorrect statistics counting	2017-09-07 20:07:13 -07:00
rfkill	net: rfkill: gpio: Switch to devm_acpi_dev_add_driver_gpios()	2017-06-13 11:07:51 +02:00
rose
rxrpc	rxrpc: Make service connection lookup always check for retry	2017-09-05 14:39:17 -07:00
sched	net_sched: fix reference counting of tc filter chain	2017-09-12 20:41:02 -07:00
sctp	sctp: fix missing wake ups in some situations	2017-09-08 10:02:47 -07:00
smc	net/smc: synchronize buffer usage with device	2017-07-29 11:22:58 -07:00
strparser	strparser: initialize all callbacks	2017-08-24 21:57:50 -07:00
sunrpc	svcrdma: Estimate Send Queue depth properly	2017-09-05 15:15:31 -04:00
switchdev	net: switchdev: Remove bridge bypass support from switchdev	2017-08-07 14:48:48 -07:00
tipc	tipc: remove unnecessary call to dev_net()	2017-09-06 21:25:52 -07:00
tls	TLS: Fix length check in do_tls_getsockopt_tx()	2017-07-06 10:58:19 +01:00
unix	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-08-21 17:06:42 -07:00
vmw_vsock	hv_sock: implements Hyper-V transport for Virtual Sockets (AF_VSOCK)	2017-08-28 15:38:18 -07:00
wimax
wireless	cfg80211: honor NL80211_RRF_NO_HT40{MINUS,PLUS}	2017-09-06 12:56:31 +02:00
x25	X25: constify null_x25_address	2017-08-03 09:13:51 -07:00
xfrm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-09-01 17:42:05 -07:00
compat.c	get_compat_bpf_fprog(): don't copyin field-by-field	2017-07-04 13:14:34 -04:00
Kconfig	net: Remove CONFIG_NETFILTER_DEBUG and _ASSERT() macros.	2017-09-04 13:25:20 +02:00
Makefile	nsh: add GSO support	2017-08-29 15:16:52 -07:00
socket.c	net: fixes for skb_send_sock	2017-08-16 11:27:52 -07:00
sysctl_net.c	sysctl: Remove dead register_sysctl_root	2017-04-16 23:42:49 -05:00