Cong Wang
7aa0045dad
net_sched: introduce a workqueue for RCU callbacks of tc filter ...
This patch introduces a dedicated workqueue for tc filters
so that each tc filter's RCU callback could defer their
action destroy work to this workqueue. The helper
tcf_queue_work() is introduced for them to use.
Because we hold RTNL lock when calling tcf_block_put(), we
can not simply flush works inside it, therefore we have to
defer it again to this workqueue and make sure all flying RCU
callbacks have already queued their work before this one, in
other words, to ensure this is the last one to execute to
prevent any use-after-free.
On the other hand, this makes tcf_block_put() ugly and
harder to understand. Since David and Eric strongly dislike
adding synchronize_rcu(), this is probably the only
solution that could make everyone happy.
Please also see the code comments below.
Reported-by: Chris Mi <chrism@mellanox.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-29 22:49:30 +09:00
9p: Implement show_options
2017-07-11 06:08:58 -04:00
Bluetooth: make baswap src const
2017-09-01 22:49:47 +02:00
netfilter: nat: Revert "netfilter: nat: convert nat bysrc hash to rhashtable"
2017-09-08 18:55:50 +02:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
2017-09-03 17:08:42 -07:00
NFC: Add nfc_dbg() macro
2017-04-05 10:15:20 +02:00
sock: struct proto hash function may error
2016-02-11 03:54:14 -05:00
sctp: fix some type cast warnings introduced by stream reconf
2017-10-29 18:03:24 +09:00
net: sched: add couple of goto_chain helpers
2017-08-23 20:44:32 -07:00
6lowpan: Fix IID format for Bluetooth
2017-04-12 22:02:36 +02:00
net_sched: get rid of tcfa_rcu
2017-09-12 20:41:02 -07:00
ipv6: fix NULL dereference in ip6_route_dev_notify()
2017-08-15 17:06:34 -07:00
rxrpc: Allow failed client calls to be retried
2017-08-29 10:55:20 +01:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-07-21 03:38:43 +01:00
VSOCK: Add vsockmon tap functions
2017-04-24 12:35:56 -04:00
net: convert neighbour.refcnt from atomic_t to refcount_t
2017-07-01 07:39:07 -07:00
net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t
2017-07-04 22:35:19 +01:00
bonding: 3ad: apply ad_actor settings changes immediately
2016-02-09 04:45:49 -05:00
bonding: Prevent duplicate userspace notification
2017-05-27 18:51:41 -04:00
bonding: require speed/duplex only for 802.3ad, alb and tlb
2017-08-11 14:21:42 -07:00
net: fix compilation when busy poll is not enabled
2017-08-11 14:59:24 -07:00
net, calipso: convert calipso_doi.refcount from atomic_t to refcount_t
2017-07-04 22:35:16 +01:00
nl80211: add authorized flag to ROAM event
2017-06-13 11:04:37 +02:00
ieee802154: add netns support
2016-07-08 12:20:57 +02:00
csum: eliminate sparse warning in remcsum_unadjust()
2017-01-20 12:12:13 -05:00
net, ipv4: convert cipso_v4_doi.refcount from atomic_t to refcount_t
2017-07-04 01:29:04 -07:00
cls_cgroup: get sk_classid only from full sockets
2016-04-19 20:09:25 -04:00
codel: split into multiple files
2016-04-25 16:44:27 -04:00
codel: split into multiple files
2016-04-25 16:44:27 -04:00
net_sched: fq_codel: cache skb->truesize into skb->cb
2016-06-25 12:19:35 -04:00
packet: compat support for sock_fprog
2016-06-09 23:41:03 -07:00
devlink: Add IPv6 header for dpipe
2017-08-31 14:42:19 -07:00
net, decnet: convert dn_fib_info.fib_clntref from atomic_t to refcount_t
2017-07-04 22:35:15 +01:00
net: dsa: Allow switch drivers to indicate number of TX queues
2017-09-05 11:53:34 -07:00
net: prevent dst uses after free
2017-09-21 20:42:15 -07:00
net: add dst_cache support
2016-02-16 20:21:48 -05:00
net: store port/representator id in metadata_dst
2017-06-25 11:42:01 -04:00
net: add confirm_neigh method to dst_ops
2017-02-07 13:07:46 -05:00
gre: introduce native tunnel support for ERSPAN
2017-08-22 14:29:30 -07:00
esp6: Reorganize esp_output
2017-04-14 10:06:42 +02:00
net: Add module reference to FIB notifiers
2017-09-01 20:33:42 -07:00
net: fib_rules: Implement notification logic in core
2017-08-03 15:35:59 -07:00
net: Extend struct flowi6 with multipath hash
2017-08-24 18:21:17 -07:00
flow_dissector: Cleanup control flow
2017-09-05 11:40:08 -07:00
fou: Add encap ops for IPv6 tunnels
2016-05-20 18:03:16 -04:00
fq.h: Port memory limit mechanism from fq_codel
2016-09-30 13:29:21 +02:00
fq_impl: Properly enforce memory limit
2017-10-18 09:40:35 +02:00
net_sched: gen_estimator: complete rewrite of rate estimators
2016-12-05 15:21:59 -05:00
genetlink: remove ops_list from genetlink header.
2017-06-05 10:54:55 -04:00
net: Remove deprecated tunnel specific UDP offload functions
2016-06-17 20:23:32 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-08-18 01:17:32 -04:00
gro_cells: move to net/core/gro_cells.c
2017-02-08 14:38:18 -05:00
gtp: #define #define _GTP_H_ and not #define _GTP_H
2016-07-25 17:55:43 -07:00
net: add a hardware buffer management helper API
2016-03-14 12:19:46 -04:00
net: snmp: kill STATS_BH macros
2016-04-27 22:48:25 -04:00
wireless: radiotap: rewrite the radiotap header file
2017-01-25 16:00:33 +01:00
net, ipv6: convert ifacaddr6.aca_refcnt from atomic_t to refcount_t
2017-07-04 01:29:04 -07:00
net: Introduce ife encapsulation module
2017-02-03 15:16:45 -05:00
inet: drop ->bind_conflict
2017-01-18 13:04:28 -05:00
net: ipv6: add second dif to inet6 socket lookups
2017-08-07 11:39:22 -07:00
net: Work around lockdep limitation in sockets that use sockets
2017-03-09 18:23:27 -08:00
tcp: ULP infrastructure
2017-06-15 12:12:40 -04:00
ipv6: suppress sparse warnings in IP6_ECN_set_ce()
2016-08-13 15:08:00 -07:00
Revert "net: fix percpu memory leaks"
2017-09-03 11:01:05 -07:00
net: ipv4: add second dif to inet socket lookups
2017-08-07 11:39:21 -07:00
tcp/dccp: fix other lockdep splats accessing ireq_opt
2017-10-26 17:41:32 +09:00
ipv4: Namespaceify tcp_tw_recycle and tcp_max_tw_buckets knob
2016-12-29 11:38:31 -05:00
inetpeer: remove AVL implementation in favor of RB tree
2017-07-17 08:59:01 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-08-21 17:06:42 -07:00
ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short
2016-03-13 23:55:13 -04:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-09-01 17:42:05 -07:00
ipv6: Use rt6i_idev index for echo replies to a local address
2017-08-29 15:32:25 -07:00
ip6_tunnel: Allow policy-based routing through tunnels
2017-04-21 13:21:30 -04:00
net: fib_rules: Implement notification logic in core
2017-08-03 15:35:59 -07:00
gre: add collect_md mode to ERSPAN tunnel
2017-08-28 15:04:52 -07:00
ipvs: remove unused function ip_vs_set_state_timeout
2017-04-28 12:00:10 +02:00
net, ipv6: convert ipv6_txoptions.refcnt from atomic_t to refcount_t
2017-07-04 01:29:03 -07:00
net, ipx: convert ipx_route.refcnt from atomic_t to refcount_t
2017-07-04 22:35:17 +01:00
wext: uninline stream addition functions
2017-01-13 09:38:42 +01:00
kcm: Use stream parser
2016-08-17 19:36:23 -04:00
net: ipv4: Do not drop to make_route if oif is l3mdev
2016-10-13 12:05:26 -04:00
net, lapb: convert lapb_cb.refcnt from atomic_t to refcount_t
2017-07-04 22:35:16 +01:00
net, llc: convert llc_sap.refcnt from atomic_t to refcount_t
2017-07-04 22:35:15 +01:00
net: add extack arg to lwtunnel build state
2017-05-30 11:55:32 -04:00
mac80211: fix VLAN handling with TXQs
2017-09-05 11:28:43 +02:00
ieee802154: cleanup WARN_ON for fc fetch
2016-07-08 13:23:12 +02:00
openvswitch: use mpls_hdr
2016-10-03 02:00:22 -04:00
net: mpls: Increase max number of labels for lwt encap
2017-04-01 20:21:44 -07:00
net/ncsi: fix ncsi_vlan_rx_{add,kill}_vid references
2017-09-05 09:11:45 -07:00
net: convert neighbour.refcnt from atomic_t to refcount_t
2017-07-01 07:39:07 -07:00
Now that IPC and other changes have landed, enable manual markings for
2017-07-19 08:55:18 -07:00
net: core: Make the FIB notification chain generic
2017-08-03 15:35:59 -07:00
neigh: Send a notification when DELAY_PROBE_TIME changes
2016-07-05 09:06:29 -07:00
net: convert netlbl_lsm_cache.refcount from atomic_t to refcount_t
2017-07-01 07:39:09 -07:00
netlink: fix nla_put_{u8,u16,u32} for KASAN
2017-09-25 20:18:27 -07:00
net, netrom: convert nr_node.refcount from atomic_t to refcount_t
2017-07-04 22:35:17 +01:00
ieee802154: add netns support
2016-07-08 12:20:57 +02:00
net: add NSH header structures and helpers
2017-08-29 15:16:52 -07:00
net: ping: make ping_v6_sendmsg static
2016-03-23 22:09:58 -04:00
net_sched: introduce a workqueue for RCU callbacks of tc filter
2017-10-29 22:49:30 +09:00
net: sched: Add helpers to identify classids
2017-08-11 13:47:00 -07:00
pptp: Refactor the struct and macros of PPTP codes
2016-08-15 10:55:53 -07:00
IPv4: early demux can return an error code
2017-10-01 03:55:47 +01:00
net: Introduce psample, a new genetlink channel for packet sampling
2017-01-24 13:44:28 -05:00
net: ipv4: add second dif to raw socket lookups
2017-08-07 11:39:21 -07:00
net: ipv6: add second dif to raw socket lookups
2017-08-07 11:39:22 -07:00
ktime: Get rid of the union
2016-12-25 17:21:22 +01:00
net: convert sock.sk_refcnt from atomic_t to refcount_t
2017-07-01 07:39:08 -07:00
udp: perform source validation for mcast early demux
2017-10-01 03:55:47 +01:00
rtnetlink: add RTNL_FLAG_DOIT_UNLOCKED
2017-08-09 16:57:38 -07:00
net_sched: introduce a workqueue for RCU callbacks of tc filter
2017-10-29 22:49:30 +09:00
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
tcp: Namespaceify sysctl_tcp_timestamps
2017-06-08 10:53:29 -04:00
ipv6: sr: add support for ip4ip6 encapsulation
2017-08-25 17:10:23 -07:00
ipv6: sr: add core files for SR HMAC support
2016-11-09 20:40:06 -05:00
smc: netlink interface for SMC sockets
2017-01-09 16:07:41 -05:00
net: snmp: fix 64bit stats on 32bit arches
2016-04-28 11:49:45 -04:00
net: prevent dst uses after free
2017-09-21 20:42:15 -07:00
soreuseport: fix NULL ptr dereference SO_REUSEPORT after bind
2016-01-19 14:44:23 -05:00
strparser: Use delayed work instead of timer for msg timeout
2017-10-25 10:37:11 +09:00
net: switchdev: Remove bridge bypass support from switchdev
2017-08-07 14:48:48 -07:00
bpf: bpf_compute_data uses incorrect cb structure
2017-10-29 11:18:48 +09:00
tls: kernel TLS support
2017-06-15 12:12:40 -04:00
ipv6: add new struct ipcm6_cookie
2016-05-03 16:08:14 -04:00
net: define the TSO header size in net/tso.h
2017-08-23 20:42:09 -07:00
vxlan: factor out VXLAN-GPE next protocol
2017-08-29 15:16:52 -07:00
IPv4: early demux can return an error code
2017-10-01 03:55:47 +01:00
net: add infrastructure to un-offload UDP tunnel port
2017-07-24 13:52:59 -07:00
udp: use a separate rx queue for packet reception
2017-05-16 15:41:29 -04:00
vxlan: factor out VXLAN-GPE next protocol
2017-08-29 15:16:52 -07:00
dev_ioctl: copy only the smaller struct iwreq for wext
2017-06-14 13:52:44 +02:00
net, x25: convert x25_neigh.refcnt from atomic_t to refcount_t
2017-07-04 22:35:18 +01:00
xfrm: Add support for network devices capable of removing the ESP trailer
2017-08-31 09:04:03 +02:00
7aa0045dad