Jakub Kicinski c91c46de6b net: provide macros for commonly copied lockless queue stop/wake code ... A lot of drivers follow the same scheme to stop / start queues without introducing locks between xmit and NAPI tx completions. I'm guessing they all copy'n'paste each other's code. The original code dates back all the way to e1000 and Linux 2.6.19. Smaller drivers shy away from the scheme and introduce a lock which may cause deadlocks in netpoll. Provide macros which encapsulate the necessary logic. The macros do not prevent false wake ups, the extra barrier required to close that race is not worth it. See discussion in: https://lore.kernel.org/all/c39312a2-4537-14b4-270c-9fe1fbb91e89@gmail.com/ Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2023-04-10 17:56:18 -07:00
..
caif	tty: cumulate and document tty_struct::flow* members	2021-05-13 16:57:16 +02:00
device_drivers	Documentation/eth/intel: Remove references to SourceForge	2023-03-30 09:35:04 -07:00
devlink	net/mlx5e: Add devlink hairpin queues parameters	2023-03-15 22:12:08 -07:00
dsa	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
mac80211_hwsim
6lowpan.rst
6pack.rst
af_xdp.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
alias.rst
arcnet-hardware.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
arcnet.rst
atm.rst
ax25.rst
bareudp.rst
batman-adv.rst	batman-adv: Fix mailing list address	2023-01-21 19:01:59 +01:00
bonding.rst	Documentation: bonding: correct xmit hash steps	2022-12-02 10:46:45 +00:00
bridge.rst	docs: networking: Fix bridge documentation URL	2023-01-25 22:44:27 -08:00
can_ucan_protocol.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
can.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
cdc_mbim.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
checksum-offloads.rst
dccp.rst
dctcp.rst
dns_resolver.rst
driver.rst	net: provide macros for commonly copied lockless queue stop/wake code	2023-04-10 17:56:18 -07:00
eql.rst
ethtool-netlink.rst	ethtool: Add support for configuring tx_push_buf_len	2023-03-27 19:49:58 -07:00
failover.rst
fib_trie.rst
filter.rst	treewide: use get_random_u32() when possible	2022-10-11 17:42:58 -06:00
gen_stats.rst
generic_netlink.rst	Documentation: networking: Update generic_netlink_howto URL	2022-11-23 17:25:02 -08:00
generic-hdlc.rst
gtp.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
ieee802154.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
ila.rst
index.rst	docs: networking: document NAPI	2023-03-23 19:47:40 -07:00
ioam6-sysctl.rst	ipv6: ioam: Documentation for new IOAM sysctls	2021-07-21 08:14:33 -07:00
ip_dynaddr.rst
ip-sysctl.rst	neighbor: fix proxy_delay usage when it is zero	2023-02-01 21:02:54 -08:00
ipddp.rst
ipsec.rst
ipv6.rst
ipvlan.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
ipvs-sysctl.rst	ipvs: run_estimation should control the kthread tasks	2022-12-10 22:44:43 +01:00
j1939.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
kapi.rst	wimax: move out to staging	2020-10-29 19:27:45 +01:00
kcm.rst
l2tp.rst	Documentation: networking: correct possessive "its"	2022-08-31 12:36:08 -07:00
lapb-module.rst
mac80211-auth-assoc-deauth.txt
mac80211-injection.rst
mctp.rst	mctp: Add SIOCMCTP{ALLOC,DROP}TAG ioctls for tag control	2022-02-09 12:00:11 +00:00
mpls-sysctl.rst
mptcp-sysctl.rst	Documentation: mptcp: fix pm_type formatting	2022-09-13 10:18:44 +02:00
msg_zerocopy.rst	docs: net: fix inaccuracies in msg_zerocopy.rst	2023-02-24 18:31:31 -08:00
multiqueue.rst
napi.rst	docs: networking: document NAPI	2023-03-23 19:47:40 -07:00
net_dim.rst
net_failover.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
netconsole.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
netdev-features.rst	net: hsr: add offloading support	2021-02-11 13:24:44 -08:00
netdevices.rst	net: bonding: move ioctl handling to private ndo operation	2021-07-27 20:11:45 +01:00
netfilter-sysctl.rst
netif-msg.rst
nexthop-group-resilient.rst	Documentation: net: Document resilient next-hop groups	2021-03-29 13:51:38 -07:00
nf_conntrack-sysctl.rst	netfilter: conntrack: unify established states for SCTP paths	2023-01-24 09:52:52 +01:00
nf_flowtable.rst	docs: nf_flowtable: fix compilation and warnings	2021-03-25 17:42:02 -07:00
nfc.rst
openvswitch.rst
operstates.rst	docs: operstates: document IF_OPER_TESTING	2021-08-02 15:16:04 +01:00
packet_mmap.rst	docs: networking: Replace strncpy() with strscpy()	2021-06-04 11:21:43 -06:00
page_pool.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
phonet.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
phy.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
pktgen.rst	pktgen: document the latest pktgen usage options	2021-08-25 13:44:30 +01:00
plip.rst
ppp_generic.rst	docs: update ppp_generic.rst to document new ioctls	2020-12-10 13:57:36 -08:00
proc_net_tcp.rst
radiotap-headers.rst
rds.rst	Doc: networking: Fix the title's Sphinx overline in rds.rst	2021-11-29 15:18:21 -07:00
regulatory.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
representors.rst	docs: net: add an explanation of VF (and other) Representors	2022-09-21 07:31:38 -07:00
rxrpc.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
scaling.rst	docs: networking: update XPS to account for netif_set_xps_queue	2020-10-13 16:21:54 -07:00
sctp.rst
secid.rst
seg6-sysctl.rst	doc: move seg6_flowlabel to seg6-sysctl.rst	2021-04-14 13:13:15 -07:00
segmentation-offloads.rst
sfp-phylink.rst	doc: sfp-phylink: Fix a broken reference	2022-08-02 21:45:07 -07:00
skbuff.rst	skbuff: render the checksum comment to documentation	2022-05-10 17:48:37 -07:00
smc-sysctl.rst	net/smc: Unbind r/w buffer size from clcsock and make them tunable	2022-09-22 12:58:21 +02:00
snmp_counter.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
statistics.rst	docs: ethtool-netlink: document interface for MAC Merge layer	2023-01-23 12:44:18 +00:00
strparser.rst
switchdev.rst	docs: net: add an explanation of VF (and other) Representors	2022-09-21 07:31:38 -07:00
sysfs-tagging.rst	Documentation: networking: correct spelling	2023-01-31 13:00:47 +01:00
tc-actions-env-rules.rst
tc-queue-filters.rst	Documentation: networking: TC queue based filtering	2022-10-25 10:32:40 +02:00
tcp-thin.rst
team.rst
timestamping.rst	net_tstamp: add SOF_TIMESTAMPING_OPT_ID_TCP	2022-12-08 19:49:21 -08:00
tipc.rst	Documentation: add more details in tipc.rst	2021-07-01 13:18:18 -07:00
tls-offload-layers.svg
tls-offload-reorder-bad.svg
tls-offload-reorder-good.svg
tls-offload.rst	net: Disable NETIF_F_HW_TLS_RX when RXCSUM is disabled	2021-01-19 15:58:05 -08:00
tls.rst	tls: rx: add counter for NoPad violations	2022-07-11 19:48:33 -07:00
tproxy.rst
tuntap.rst	docs: networking: Replace strncpy() with strscpy()	2021-06-04 11:21:43 -06:00
udplite.rst
vrf.rst	doc: Document unexpected tcp_l3mdev_accept=1 behavior	2021-08-23 11:53:24 +01:00
vxlan.rst	docs: vxlan: add info about device features	2020-09-28 12:50:12 -07:00
x25-iface.rst	net: x25: Queue received packets in the drivers instead of per-CPU queues	2021-04-05 11:42:12 -07:00
x25.rst	net: x25: Remove unimplemented X.25-over-LLC code stubs	2020-12-12 17:15:33 -08:00
xdp-rx-metadata.rst	xdp: bpf_xdp_metadata use EOPNOTSUPP for no driver support	2023-03-22 09:11:09 -07:00
xfrm_device.rst	xfrm: extend add state callback to set failure reason	2023-01-26 16:28:48 -08:00
xfrm_proc.rst
xfrm_sync.rst
xfrm_sysctl.rst