Tom Parkin 07b8ca3792 net/l2tp: convert tunnel rwlock_t to rcu ... Previously commit e02d494d2c ("l2tp: Convert rwlock to RCU") converted most, but not all, rwlock instances in the l2tp subsystem to RCU. The remaining rwlock protects the per-tunnel hashlist of sessions which is used for session lookups in the UDP-encap data path. Convert the remaining rwlock to rcu to improve performance of UDP-encap tunnels. Note that the tunnel and session, which both live on RCU-protected lists, use slightly different approaches to incrementing their refcounts in the various getter functions. The tunnel has to use refcount_inc_not_zero because the tunnel shutdown process involves dropping the refcount to zero prior to synchronizing RCU readers (via. kfree_rcu). By contrast, the session shutdown removes the session from the list(s) it is on, synchronizes with readers, and then decrements the session refcount. Since the getter functions increment the session refcount with the RCU read lock held we prevent getters seeing a zero session refcount, and therefore don't need to use refcount_inc_not_zero. Signed-off-by: Tom Parkin <tparkin@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2021-11-29 12:11:25 +00:00
..
6lowpan
9p	9p: fix a bunch of checkpatch warnings	2021-11-04 21:04:25 +09:00
802	net: 802: Use memset_startat() to clear struct fields	2021-11-19 11:23:23 +00:00
8021q	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-11-26 13:45:19 -08:00
appletalk
atm	net: atm: use address setting helpers	2021-10-24 13:59:45 +01:00
ax25	ax25: constify dev_addr passing	2021-10-13 09:40:45 -07:00
batman-adv	Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2021-11-10 16:15:54 -08:00
bluetooth	bluetooth-next pull request for net-next:	2021-11-17 14:52:44 +00:00
bpf	bpf: Add dummy BPF STRUCT_OPS for test purpose	2021-11-01 14:10:00 -07:00
bpfilter
bridge	bridge: use __set_bit in __br_vlan_set_default_pvid	2021-11-26 16:47:56 -08:00
caif	net: caif: get ready for const netdev->dev_addr	2021-10-24 13:59:45 +01:00
can	can: j1939: j1939_tp_cmd_recv(): check the dst address of TP.CM_BAM	2021-11-06 17:29:32 +01:00
ceph	libceph, ceph: move ceph_osdc_copy_from() into cephfs code	2021-11-08 03:29:52 +01:00
core	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-11-26 13:45:19 -08:00
dcb
dccp	dccp: Inline dccp_listen_start().	2021-11-23 20:16:22 -08:00
decnet
dns_resolver
dsa	net: dsa: felix: fix broken VLAN-tagged PTP under VLAN-aware bridge	2021-11-03 14:22:00 +00:00
ethernet	gro: remove rcu_read_lock/rcu_read_unlock from gro_complete handlers	2021-11-24 17:21:42 -08:00
ethtool	net: ethtool: set a default driver name	2021-11-26 16:44:53 -08:00
hsr	net: hsr: Add support for redbox supervision frames	2021-10-26 14:52:17 +01:00
ieee802154	net: drop nopreempt requirement on sock_prot_inuse_add()	2021-11-16 13:20:45 +00:00
ife
ipv4	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-11-26 13:45:19 -08:00
ipv6	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-11-26 13:45:19 -08:00
iucv	net/af_iucv: Use struct_group() to zero struct iucv_sock region	2021-11-19 11:52:25 +00:00
kcm
key
l2tp	net/l2tp: convert tunnel rwlock_t to rcu	2021-11-29 12:11:25 +00:00
l3mdev
lapb
llc	llc/snap: constify dev_addr passing	2021-10-13 09:40:46 -07:00
mac80211	ethtool: extend ringparam setting/getting API with rx_buf_len	2021-11-22 12:31:49 +00:00
mac802154	mac802154: use dev_addr_set() - manual	2021-10-20 14:27:40 +01:00
mctp	mctp/test: Update refcount checking in route fragment tests	2021-11-18 12:01:14 +00:00
mpls
mptcp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-11-26 13:45:19 -08:00
ncsi	net/ncsi : Add payload to be 32-bit aligned to fix dropped packets	2021-11-24 11:53:17 +00:00
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-11-26 13:45:19 -08:00
netlabel	net: fix NULL pointer reference in cipso_v4_doi_free	2021-08-30 12:23:18 +01:00
netlink	net: drop nopreempt requirement on sock_prot_inuse_add()	2021-11-16 13:20:45 +00:00
netrom	ax25: constify dev_addr passing	2021-10-13 09:40:45 -07:00
nfc	NFC: add NCI_UNREG flag to eliminate the race	2021-11-17 20:17:05 -08:00
nsh
openvswitch	include/linux/mm.h: move nr_free_buffer_pages from swap.h to mm.h	2021-11-06 13:30:43 -07:00
packet	net: drop nopreempt requirement on sock_prot_inuse_add()	2021-11-16 13:20:45 +00:00
phonet
psample
qrtr	net: qrtr: combine nameservice into main module	2021-09-28 17:36:43 -07:00
rds	rds: Fix a typo in a comment	2021-11-22 14:28:37 +00:00
rfkill
rose	rose: constify dev_addr passing	2021-10-13 09:40:45 -07:00
rxrpc	rxrpc: Fix _usecs_to_jiffies() by using usecs_to_jiffies()	2021-09-24 14:18:34 +01:00
sched	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-11-26 13:45:19 -08:00
sctp	sctp: make the raise timer more simple and accurate	2021-11-25 21:00:45 -08:00
smc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-11-26 13:45:19 -08:00
strparser	bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding	2021-11-09 01:05:28 +01:00
sunrpc	A slow cycle for nfsd: mainly cleanup, including Neil's patch dropping	2021-11-10 16:45:54 -08:00
switchdev	net: switchdev: merge switchdev_handle_fdb_{add,del}_to_device	2021-10-27 14:54:02 +01:00
tipc	tipc: delete the unlikely branch in tipc_aead_encrypt	2021-11-25 20:58:16 -08:00
tls	tls: fix replacing proto_ops	2021-11-25 19:28:16 -08:00
unix	af_unix: Relax race in unix_autobind().	2021-11-26 18:01:58 -08:00
vmw_vsock	vsock/virtio: suppress used length validation	2021-11-22 14:49:03 +00:00
wireless	nl80211: fix radio statistics in survey dump	2021-11-15 10:51:51 +01:00
x25
xdp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-11-18 13:13:16 -08:00
xfrm	Core:	2021-11-02 06:20:58 -07:00
compat.c
devres.c
Kconfig	net: kunit: add a test for dev_addr_lists	2021-11-20 12:25:57 +00:00
Makefile
socket.c	Core:	2021-08-31 16:43:06 -07:00
sysctl_net.c	sections: move and rename core_kernel_data() to is_kernel_core_data()	2021-11-09 10:02:50 -08:00