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9fed9000c5
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Jakub Sitnicki 9fed9000c5 bpf: Allow selecting reuseport socket from a SOCKMAP/SOCKHASH 
SOCKMAP & SOCKHASH now support storing references to listening
sockets. Nothing keeps us from using these map types a collection of
sockets to select from in BPF reuseport programs. Whitelist the map types
with the bpf_sk_select_reuseport helper.

The restriction that the socket has to be a member of a reuseport group
still applies. Sockets in SOCKMAP/SOCKHASH that don't have sk_reuseport_cb
set are not a valid target and we signal it with -EINVAL.

The main benefit from this change is that, in contrast to
REUSEPORT_SOCKARRAY, SOCK{MAP,HASH} don't impose a restriction that a
listening socket can be just one BPF map at the same time.

Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200218171023.844439-9-jakub@cloudflare.com
2020-02-21 22:29:45 +01:00
..
6lowpan
9p
802 treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
8021q net: vlan: suppress "failed to kill vid" warnings 2020-02-17 14:30:54 -08:00
appletalk
atm proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
ax25 net: Make sock protocol value checks more specific 2020-01-09 18:41:40 -08:00
batman-adv Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2020-01-19 22:10:04 +01:00
bluetooth Bluetooth: Fix race condition in hci_release_sock() 2020-01-26 10:34:17 +02:00
bpf bpf: Allow to change skb mark in test_run 2019-12-18 17:05:58 -08:00
bpfilter kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
bridge net: bridge: vlan: add per-vlan state 2020-01-24 12:58:14 +01:00
caif caif_usb: fix spelling mistake "to" -> "too" 2020-01-24 08:12:06 +01:00
can can: j1939: j1939_sk_bind(): take priv after lock is held 2019-12-08 11:52:02 +01:00
ceph Merge branch 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-02-08 13:26:41 -08:00
core bpf: Allow selecting reuseport socket from a SOCKMAP/SOCKHASH 2020-02-21 22:29:45 +01:00
dcb
dccp treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
decnet net: Make sock protocol value checks more specific 2020-01-09 18:41:40 -08:00
dns_resolver
dsa net: dsa: tag_ar9331: Make sure there is headroom for tag 2020-02-14 07:34:51 -08:00
ethernet net: remove eth_change_mtu 2020-01-27 11:09:31 +01:00
ethtool net/core: Replace driver version to be kernel version 2020-01-27 13:47:22 +01:00
hsr net: hsr: fix possible NULL deref in hsr_handle_frame() 2020-02-04 09:27:07 +01:00
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-11-02 13:54:56 -07:00
ife
ipv4 tcp_bpf: Don't let child socket inherit parent protocol ops on copy 2020-02-21 22:29:45 +01:00
ipv6 net, ip6_tunnel: enhance tunnel locate with link check 2020-02-14 07:31:48 -08:00
iucv treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
kcm
key
l2tp l2tp: Allow duplicate session creation with UDP 2020-02-04 12:35:49 +01:00
l3mdev
lapb
llc llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c) 2019-12-20 21:19:36 -08:00
mac80211 A few big new things: 2020-02-16 19:00:22 -08:00
mac802154
mpls net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup 2019-12-04 12:27:13 -08:00
mptcp mptcp: make the symbol 'mptcp_sk_clone_lock' static 2020-02-10 10:23:00 +01:00
ncsi net/ncsi: Support for multi host mellanox card 2020-01-09 18:36:22 -08:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-02-04 13:32:20 +00:00
netlabel
netlink net: netlink: Replace zero-length array with flexible-array member 2020-02-17 19:05:06 -08:00
netrom net: core: add generic lockdep keys 2019-10-24 14:53:48 -07:00
nfc NFC: digital: Replace zero-length array with flexible-array member 2020-02-17 19:05:05 -08:00
nsh
openvswitch openvswitch: add TTL decrement action 2020-02-16 19:34:44 -08:00
packet y2038: core, driver and file system changes 2020-01-29 14:55:47 -08:00
phonet net: Remove redundant BUG_ON() check in phonet_pernet 2020-01-03 12:25:50 -08:00
psample net: psample: fix skb_over_panic 2019-11-26 14:40:13 -08:00
qrtr net: qrtr: Remove receive worker 2020-01-14 18:36:42 -08:00
rds net/rds: Use prefetch for On-Demand-Paging MR 2020-01-18 11:48:19 +02:00
rfkill rfkill: Fix incorrect check to avoid NULL pointer dereference 2019-12-16 10:15:49 +01:00
rose Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-01-26 10:40:21 +01:00
rxrpc rxrpc: Fix call RCU cleanup using non-bh-safe locks 2020-02-07 11:20:57 +01:00
sched net: sched: don't take rtnl lock during flow_action setup 2020-02-17 14:17:02 -08:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-01-09 12:13:43 -08:00
smc net/smc: reduce port_event scheduling 2020-02-17 14:50:24 -08:00
strparser
sunrpc Highlights: 2020-02-07 17:50:21 -08:00
switchdev net: switchdev: Replace zero-length array with flexible-array member 2020-02-17 19:05:06 -08:00
tipc tipc: fix successful connect() but timed out 2020-02-10 10:23:00 +01:00
tls net, sk_msg: Annotate lockless access to sk_prot on clone 2020-02-21 22:29:45 +01:00
unix skbuff: fix a data race in skb_queue_len() 2020-02-06 13:59:10 +01:00
vmw_vsock net: virtio_vsock: Enhance connection semantics 2020-02-16 19:01:49 -08:00
wimax
wireless A few big new things: 2020-02-16 19:00:22 -08:00
x25 net: x25: convert to list_for_each_entry_safe() 2020-02-16 18:59:42 -08:00
xdp mm, tree-wide: rename put_user_page*() to unpin_user_page*() 2020-01-31 10:30:38 -08:00
xfrm xfrm: interface: use icmp_ndo_send helper 2020-02-13 14:19:00 -08:00
compat.c y2038: socket: use __kernel_old_timespec instead of timespec 2019-11-15 14:38:29 +01:00
Kconfig mptcp: Add MPTCP socket stubs 2020-01-24 13:44:07 +01:00
Makefile mptcp: Add MPTCP socket stubs 2020-01-24 13:44:07 +01:00
socket.c socket: fix unused-function warning 2020-01-08 15:02:21 -08:00
sysctl_net.c