Cong Wang 9f2470fbc4 skmsg: Improve udp_bpf_recvmsg() accuracy ... I tried to reuse sk_msg_wait_data() for different protocols, but it turns out it can not be simply reused. For example, UDP actually uses two queues to receive skb: udp_sk(sk)->reader_queue and sk->sk_receive_queue. So we have to check both of them to know whether we have received any packet. Also, UDP does not lock the sock during BH Rx path, it makes no sense for its ->recvmsg() to lock the sock. It is always possible for ->recvmsg() to be called before packets actually arrive in the receive queue, we just use best effort to make it accurate here. Fixes: 1f5be6b3b0 ("udp: Implement udp_bpf_recvmsg() for sockmap") Signed-off-by: Cong Wang <cong.wang@bytedance.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/20210615021342.7416-2-xiyou.wangcong@gmail.com		2021-06-21 16:48:11 +02:00
..
bpf_sk_storage.c	bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]	2021-02-26 11:51:48 -08:00
datagram.c	udp: fix skb_copy_and_csum_datagram with odd segment sizes	2021-02-04 18:56:56 -08:00
datagram.h
dev_addr_lists.c	net: core: Correct function name dev_uc_flush() in the kerneldoc	2021-03-28 17:56:56 -07:00
dev_ioctl.c	net: fix dev_ifsioc_locked() race condition	2021-02-11 18:14:19 -08:00
dev.c	net: sched: fix tx action reschedule issue with stopped queue	2021-05-14 15:05:46 -07:00
devlink.c	devlink: Correct VIRTUAL port to not have phys_port attributes	2021-05-27 14:43:41 -07:00
drop_monitor.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-03-25 15:31:22 -07:00
dst_cache.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
dst.c	net, bpf: Fix ip6ip6 crash with collect_md populated skbs	2021-03-10 12:24:18 -08:00
failover.c
fib_notifier.c	net: fib_notifier: propagate extack down to the notifier block callback	2019-10-04 11:10:56 -07:00
fib_rules.c	fib: Return the correct errno code	2021-06-03 15:13:56 -07:00
filter.c	bpf: Set mac_len in bpf_skb_change_head	2021-05-21 00:03:51 +02:00
flow_dissector.c	flow_dissector: Fix out-of-bounds warning in __skb_flow_bpf_to_target()	2021-04-16 17:02:27 -07:00
flow_offload.c	net: flow_offload: Fix memory leak for indirect flow block	2020-12-09 16:08:33 -08:00
gen_estimator.c	net_sched: gen_estimator: support large ewma log	2021-01-15 18:11:06 -08:00
gen_stats.c	docs: networking: convert gen_stats.txt to ReST	2020-04-28 14:39:46 -07:00
gro_cells.c	gro_cells: reduce number of synchronize_net() calls	2020-11-25 11:28:12 -08:00
hwbm.c	net: hwbm: Make the hwbm_pool lock a mutex	2019-06-09 19:40:10 -07:00
link_watch.c	net: Add IF_OPER_TESTING	2020-04-20 12:43:24 -07:00
lwt_bpf.c	lwt_bpf: Replace preempt_disable() with migrate_disable()	2020-12-07 11:53:40 -08:00
lwtunnel.c	net: ipv6: add rpl sr tunnel	2020-03-29 22:30:57 -07:00
Makefile	net: selftest: fix build issue if INET is disabled	2021-04-28 14:06:45 -07:00
neighbour.c	neighbour: allow NUD_NOARP entries to be forced GCed	2021-06-07 15:25:47 -07:00
net_namespace.c	net: inline function get_net_ns_by_fd if NET_NS is disabled	2021-06-15 11:00:45 -07:00
net-procfs.c	net: move the ptype_all and ptype_base declarations to include/linux/netdevice.h	2021-03-22 13:14:45 -07:00
net-sysfs.c	net-sysfs: remove possible sleep from an RCU read-side critical section	2021-03-22 13:28:13 -07:00
net-sysfs.h	net-sysfs: add netdev_change_owner()	2020-02-26 20:07:25 -08:00
net-traces.c	page_pool: add tracepoints for page_pool with details need by XDP	2019-06-19 11:23:13 -04:00
netclassid_cgroup.c	net: Remove the err argument from sock_from_file	2020-12-04 22:32:40 +01:00
netevent.c	net: core: Correct function name netevent_unregister_notifier() in the kerneldoc	2021-03-28 17:56:56 -07:00
netpoll.c	Revert "net: Have netpoll bring-up DSA management interface"	2021-02-06 14:42:57 -08:00
netprio_cgroup.c	net: Remove the err argument from sock_from_file	2020-12-04 22:32:40 +01:00
page_pool.c	mm: fix struct page layout on 32-bit systems	2021-05-14 19:41:32 -07:00
pktgen.c	pktgen: fix misuse of BUG_ON() in pktgen_thread_worker()	2021-01-27 16:46:37 -08:00
ptp_classifier.c	ptp: Add generic ptp v2 header parsing function	2020-08-19 16:07:49 -07:00
request_sock.c	tcp: add rcu protection around tp->fastopen_rsk	2019-10-13 10:13:08 -07:00
rtnetlink.c	rtnetlink: Fix regression in bridge VLAN configuration	2021-06-09 14:58:26 -07:00
scm.c	scm: fix a typo in put_cmsg()	2021-04-16 11:41:07 -07:00
secure_seq.c	crypto: lib/sha1 - remove unnecessary includes of linux/cryptohash.h	2020-05-08 15:32:17 +10:00
selftests.c	net: add generic selftest support	2021-04-20 16:08:02 -07:00
skbuff.c	skbuff: fix incorrect msg_zerocopy copy notifications	2021-06-10 13:39:57 -07:00
skmsg.c	skmsg: Improve udp_bpf_recvmsg() accuracy	2021-06-21 16:48:11 +02:00
sock_diag.c	bpf, net: Rework cookie generator as per-cpu one	2020-09-30 11:50:35 -07:00
sock_map.c	sock_map: Fix a potential use-after-free in sock_map_close()	2021-04-12 17:35:26 +02:00
sock_reuseport.c	udp: Prevent reuseport_select_sock from reading uninitialized socks	2021-01-08 19:15:40 -08:00
sock.c	net: sock: fix in-kernel mark setting	2021-06-01 15:18:49 -07:00
stream.c	tcp: make sure EPOLLOUT wont be missed	2019-08-19 13:07:43 -07:00
sysctl_net_core.c	net: change netdev_unregister_timeout_secs min value to 1	2021-03-25 17:24:06 -07:00
timestamping.c	net: Introduce a new MII time stamping interface.	2019-12-25 19:51:33 -08:00
tso.c	net: tso: add UDP segmentation support	2020-06-18 20:46:23 -07:00
utils.c	net: Fix skb->csum update in inet_proto_csum_replace16().	2020-01-24 20:54:30 +01:00
xdp.c	xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model	2021-03-31 15:15:23 -07:00