UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/net
History
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 6lowpan: iphc: Fix an off-by-one check of array index 2021-07-22 16:19:03 +02:00
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 net: socket: rework compat_ifreq_ioctl() 2021-07-23 14:20:25 +01:00
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 bpfilter: Specify the log level for the kmsg message 2021-06-25 13:13:50 +02:00
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 net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
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 net: sock: introduce sk_error_report 2021-06-29 11:28:21 -07:00
key
…
l2tp net/l2tp: convert tunnel rwlock_t to rcu 2021-11-29 12:11:25 +00:00
l3mdev
…
lapb net: lapb: Use list_for_each_entry() to simplify code in lapb_iface.c 2021-06-08 16:31:25 -07:00
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 mpls: defer ttl decrement in mpls_forward() 2021-07-23 17:17:56 +01:00
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 net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
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 net: x25: Use list_for_each_entry() to simplify code in x25_route.c 2021-06-10 14:08:09 -07:00
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
Kconfig net: kunit: add a test for dev_addr_lists 2021-11-20 12:25:57 +00:00
Makefile mctp: Add MCTP base 2021-07-29 15:06:49 +01:00
compat.c
…
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
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