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12102436ac
kernel_optimize_test/include/net
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Jacob Keller 12102436ac devlink: track snapshot id usage count using an xarray 
Each snapshot created for a devlink region must have an id. These ids
are supposed to be unique per "event" that caused the snapshot to be
created. Drivers call devlink_region_snapshot_id_get to obtain a new id
to use for a new event trigger. The id values are tracked per devlink,
so that the same id number can be used if a triggering event creates
multiple snapshots on different regions.

There is no mechanism for snapshot ids to ever be reused. Introduce an
xarray to store the count of how many snapshots are using a given id,
replacing the snapshot_id field previously used for picking the next id.

The devlink_region_snapshot_id_get() function will use xa_alloc to
insert an initial value of 1 value at an available slot between 0 and
U32_MAX.

The new __devlink_snapshot_id_increment() and
__devlink_snapshot_id_decrement() functions will be used to track how
many snapshots currently use an id.

Drivers must now call devlink_snapshot_id_put() in order to release
their reference of the snapshot id after adding region snapshots.

By tracking the total number of snapshots using a given id, it is
possible for the decrement() function to erase the id from the xarray
when it is not in use.

With this method, a snapshot id can become reused again once all
snapshots that referred to it have been deleted via
DEVLINK_CMD_REGION_DEL, and the driver has finished adding snapshots.

This work also paves the way to introduce a mechanism for userspace to
request a snapshot.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-26 19:39:26 -07:00
..
9p
bluetooth Bluetooth: Pause discovery and advertising during suspend 2020-03-11 18:03:49 +01:00
caif
iucv
netfilter netfilter: nf_tables: add nft_set_elem_update_expr() helper function 2020-03-15 15:27:49 +01:00
netns tcp: bind(0) remove the SO_REUSEADDR restriction when ephemeral ports are exhausted. 2020-03-12 12:08:09 -07:00
nfc NFC: Replace zero-length array with flexible-array member 2020-02-27 12:06:20 -08:00
phonet
sctp net: sctp: Replace zero-length array with flexible-array member 2020-02-29 21:52:19 -08:00
tc_act net: tc_skbedit: Make the skbedit priority offloadable 2020-03-19 21:09:19 -07:00
6lowpan.h 6lowpan: Replace zero-length array with flexible-array member 2020-02-28 14:51:30 +01:00
act_api.h net: sched: rename more stats_types 2020-03-23 20:54:23 -07:00
addrconf.h ipv6: Annotate ipv6_addr_is_* bitwise pointer casts 2019-12-16 16:09:44 -08:00
af_ieee802154.h
af_rxrpc.h afs: Fix client call Rx-phase signal handling 2020-03-13 23:04:35 +00:00
af_unix.h unix: uses an atomic type for scm files accounting 2020-02-28 12:12:53 -08:00
af_vsock.h vsock: add local transport support in the vsock core 2019-12-11 15:01:23 -08:00
ah.h
arp.h net: avoid potential false sharing in neighbor related code 2019-11-06 16:14:48 -08:00
atmclip.h
ax25.h
ax88796.h
bareudp.h net: Special handling for IP & MPLS. 2020-02-24 13:31:42 -08:00
bond_3ad.h
bond_alb.h
bond_options.h
bonding.h bonding: Replace zero-length array with flexible-array member 2020-02-28 12:08:37 -08:00
bpf_sk_storage.h bpf: INET_DIAG support in bpf_sk_storage 2020-02-27 18:50:19 -08:00
busy_poll.h net: annotate lockless accesses to sk->sk_napi_id 2019-10-30 17:34:35 -07:00
calipso.h
cfg80211-wext.h
cfg80211.h cfg80211: Configure PMK lifetime and reauth threshold for PMKSA entries 2020-03-20 14:42:20 +01:00
cfg802154.h cfg802154: Replace zero-length array with flexible-array member 2020-02-29 14:39:08 +01:00
checksum.h
cipso_ipv4.h
cls_cgroup.h
codel_impl.h
codel_qdisc.h
codel.h
compat.h
datalink.h
dcbevent.h
dcbnl.h
devlink.h devlink: track snapshot id usage count using an xarray 2020-03-26 19:39:26 -07:00
dn_dev.h
dn_fib.h net: dn_fib: Replace zero-length array with flexible-array member 2020-02-29 21:52:20 -08:00
dn_neigh.h
dn_nsp.h
dn_route.h
dn.h
drop_monitor.h drop_monitor: extend by passing cookie from driver 2020-02-25 11:05:54 -08:00
dsa.h net: dsa: Add bypass operations for the flower classifier-action filter 2020-03-03 18:57:49 -08:00
dsfield.h ipv6: Annotate bitwise IPv6 dsfield pointer cast 2019-12-16 16:09:44 -08:00
dst_cache.h
dst_metadata.h
dst_ops.h net: add bool confirm_neigh parameter for dst_ops.update_pmtu 2019-12-24 22:28:54 -08:00
dst.h Remove DST_HOST 2020-03-23 21:57:44 -07:00
erspan.h
esp.h
espintcp.h xfrm: add espintcp (RFC 8229) 2019-12-09 09:59:07 +01:00
ethoc.h
failover.h
fib_notifier.h ipv6: Remove old route notifications and convert listeners 2019-12-24 22:37:30 -08:00
fib_rules.h fib: add missing attribute validation for tun_id 2020-03-03 13:28:48 -08:00
firewire.h
flow_dissector.h net: sched: correct flower port blocking 2020-02-17 21:33:28 -08:00
flow_offload.h net: flow_offload.h: Fix a comment at flow_action_entry.mangle 2020-03-26 11:55:40 -07:00
flow.h
fou.h
fq_impl.h net/fq_impl: Switch to kvmalloc() for memory allocation 2019-11-08 09:11:49 +01:00
fq.h net/flow_dissector: switch to siphash 2019-10-23 20:13:22 -07:00
garp.h treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
gen_stats.h net_sched: extend packet counter to 64bit 2019-11-05 18:20:55 -08:00
genetlink.h net: genetlink: remove unused genl_family_attrbuf() 2019-10-06 15:44:47 +02:00
geneve.h
gre.h
gro_cells.h
gtp.h
gue.h
hwbm.h net: hwbm: if CONFIG_NET_HWBM unset, make stub functions static 2019-10-25 16:24:32 -07:00
icmp.h icmp: introduce helper for nat'd source address in network device context 2020-02-13 14:19:00 -08:00
ieee80211_radiotap.h
ieee802154_netdev.h
if_inet6.h ipv6: shrink struct ipv6_mc_socklist 2019-08-28 14:43:03 -07:00
ife.h
ila.h
inet_common.h
inet_connection_sock.h bpf: sockmap: Only check ULP for TCP sockets 2020-03-09 22:34:58 +01:00
inet_ecn.h
inet_frag.h
inet_hashtables.h tcp/dccp: fix possible race __inet_lookup_established() 2019-12-13 21:40:49 -08:00
inet_sock.h net: inet_sock: Replace zero-length array with flexible-array member 2020-03-02 11:16:28 -08:00
inet_timewait_sock.h tcp: honor SO_PRIORITY in TIME_WAIT state 2019-09-27 12:05:02 +02:00
inet6_connection_sock.h
inet6_hashtables.h
inetpeer.h
ip_fib.h net: ip_fib: Replace zero-length array with flexible-array member 2020-03-02 11:16:28 -08:00
ip_tunnels.h treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
ip_vs.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-11-02 13:54:56 -07:00
ip.h inet: protect against too small mtu values. 2019-12-07 11:55:11 -08:00
ip6_checksum.h net: core: add helper tcp_v6_gso_csum_prep 2020-02-19 11:20:59 -08:00
ip6_fib.h Remove DST_HOST 2020-03-23 21:57:44 -07:00
ip6_route.h net: ip6_route: Replace zero-length array with flexible-array member 2020-02-29 21:52:20 -08:00
ip6_tunnel.h
ipcomp.h
ipconfig.h
ipv6_frag.h
ipv6_stubs.h net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup 2019-12-04 12:27:13 -08:00
ipv6.h net: UDP tunnel encapsulation module for tunnelling different protocols like MPLS, IP, NSH etc. 2020-02-24 13:31:42 -08:00
ipx.h bonding/alb: properly access headers in bond_alb_xmit() 2020-02-05 14:28:09 +01:00
iw_handler.h
kcm.h
l3mdev.h
lag.h
lapb.h
lib80211.h
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h llc: fix sk_buff leak in llc_conn_service() 2019-10-08 13:23:05 -07:00
llc_if.h
llc_pdu.h
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
llc.h
lwtunnel.h net: lwtunnel: Replace zero-length array with flexible-array member 2020-02-29 21:52:20 -08:00
mac80211.h mac80211: update documentation about tx power 2020-03-20 14:42:19 +01:00
mac802154.h
macsec.h macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw) 2020-03-16 01:42:31 -07:00
mip6.h net: mip6: Replace zero-length array with flexible-array member 2020-03-02 11:16:27 -08:00
mld.h net: ipv6: mld: Replace zero-length array with flexible-array member 2020-02-29 21:52:20 -08:00
mpls_iptunnel.h net: mpls: Replace zero-length array with flexible-array member 2020-02-28 12:08:37 -08:00
mpls.h
mptcp.h mptcp: Fix undefined mptcp_handle_ipv6_mapped for modular IPV6 2020-01-30 10:55:54 +01:00
mrp.h treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
ncsi.h
ndisc.h ndisc: Replace zero-length array with flexible-array member 2020-02-29 21:52:20 -08:00
neighbour.h neighbour: Replace zero-length array with flexible-array member 2020-02-29 21:52:20 -08:00
net_failover.h
net_namespace.h netns: Constify exported functions 2020-01-17 13:25:24 +01:00
net_ratelimit.h
netevent.h
netlabel.h
netlink.h netlink: rename nl80211_validate_nested() to nla_validate_nested() 2019-12-12 17:07:05 -08:00
netprio_cgroup.h netprio: use css ID instead of cgroup ID 2019-11-12 08:18:03 -08:00
netrom.h
nexthop.h net: nexthop: Replace zero-length array with flexible-array member 2020-02-29 21:52:20 -08:00
nl802154.h
nsh.h
p8022.h
page_pool.h net: page_pool: API cleanup and comments 2020-02-20 10:09:25 -08:00
pie.h pie: realign comment 2020-03-04 13:25:55 -08:00
ping.h
pkt_cls.h net: sched: RED: Introduce an ECN nodrop mode 2020-03-14 21:03:46 -07:00
pkt_sched.h net_sched: add qdisc_watchdog_schedule_range_ns() 2020-03-17 21:16:34 -07:00
pptp.h
protocol.h
psample.h net: sched: take reference to psample group in flow_action infra 2019-09-16 09:18:03 +02:00
psnap.h
raw.h
rawv6.h
red.h net: sched: RED: Introduce an ECN nodrop mode 2020-03-14 21:03:46 -07:00
regulatory.h
request_sock.h net: add {READ|WRITE}_ONCE() annotations on ->rskq_accept_head 2019-10-09 21:34:31 -07:00
rose.h
route.h Remove DST_HOST 2020-03-23 21:57:44 -07:00
rsi_91x.h
rtnetlink.h
rtnh.h
sch_generic.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-25 18:58:11 -07:00
scm.h
secure_seq.h
seg6_hmac.h
seg6_local.h
seg6.h
slhc_vj.h
smc.h net/smc: introduce bookkeeping of SMCD link groups 2019-11-15 12:28:28 -08:00
snmp.h net/tls: add skeleton of MIB statistics 2019-10-05 16:29:00 -07:00
sock_reuseport.h net: sock_reuseport: Replace zero-length array with flexible-array member 2020-02-29 21:52:19 -08:00
sock.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-02-21 15:22:45 -08:00
Space.h
stp.h
strparser.h
switchdev.h
tcp_states.h
tcp.h bpf: sockmap: Move generic sockmap hooks from BPF TCP 2020-03-09 22:34:58 +01:00
timewait_sock.h
tipc.h
tls_toe.h net/tls: rename tls_hw_* functions tls_toe_* 2019-10-04 14:07:07 -07:00
tls.h net/tls: add helper for testing if socket is RX offloaded 2019-12-19 17:46:51 -08:00
transp_v6.h
tso.h
tun_proto.h
udp_tunnel.h
udp.h bpf: Add sockmap hooks for UDP sockets 2020-03-09 22:34:58 +01:00
udplite.h
vsock_addr.h vsock: remove include/linux/vm_sockets.h file 2019-11-14 18:12:17 -08:00
vxlan.h vxlan: add adjacent link to limit depth level 2019-10-24 14:53:49 -07:00
wext.h
wimax.h
x25.h net/x25: add new state X25_STATE_5 2019-12-09 10:28:43 -08:00
x25device.h
xdp_priv.h page_pool: do not release pool until inflight == 0. 2019-11-16 12:39:10 -08:00
xdp_sock.h xsk: ixgbe: i40e: ice: mlx5: Xsk_umem_discard_addr to xsk_umem_release_addr 2019-12-20 16:00:09 -08:00
xdp.h
xfrm.h xfrm: add espintcp (RFC 8229) 2019-12-09 09:59:07 +01:00