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9f2470fbc4
linux-next/net
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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
..
6lowpan 6lowpan: Fix some typos in nhc_udp.c 2021-03-24 17:52:11 -07:00
9p net: 9p: Correct function names in the kerneldoc comments 2021-03-28 17:56:56 -07:00
802
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-04-26 12:00:00 -07:00
appletalk net: appletalk: fix the usage of preposition 2021-06-08 11:37:41 -07:00
atm net: atm: pppoatm: use new API for wakeup tasklet 2021-01-29 18:24:05 -08:00
ax25 net/ax25: Delete obsolete TODO file 2021-03-30 16:54:50 -07:00
batman-adv batman-adv: Avoid WARN_ON timing related checks 2021-05-18 21:10:01 +02:00
bluetooth Bluetooth: SMP: Fix crash when receiving new connection when debug is enabled 2021-06-14 22:16:27 +02:00
bpf bpf: selftests: Add kfunc_call test 2021-03-26 20:41:52 -07:00
bpfilter net: remove redundant 'depends on NET' 2021-01-27 17:04:12 -08:00
bridge net: bridge: fix vlan tunnel dst refcnt when egressing 2021-06-10 14:06:43 -07:00
caif net: caif: fix memory leak in cfusbl_device_notify 2021-06-03 15:05:07 -07:00
can can: bcm: fix infoleak in struct bcm_msg_head 2021-06-16 12:52:18 +02:00
ceph Notable items here are a series to take advantage of David Howells' 2021-05-06 10:27:02 -07:00
core skmsg: Improve udp_bpf_recvmsg() accuracy 2021-06-21 16:48:11 +02:00
dcb net: dcb: use obj-$(CONFIG_DCB) form in net/Makefile 2021-01-27 17:03:52 -08:00
dccp net: dccp: use net_generic storage 2021-04-09 16:34:56 -07:00
decnet net/decnet: Delete obsolete TODO file 2021-03-30 16:54:50 -07:00
dns_resolver net: remove redundant 'depends on NET' 2021-01-27 17:04:12 -08:00
dsa net: dsa: tag_8021q: fix the VLAN IDs used for encoding sub-VLANs 2021-06-01 15:02:05 -07:00
ethernet of: net: pass the dst buffer to of_get_mac_address() 2021-04-13 14:35:02 -07:00
ethtool ethtool: strset: fix message length calculation 2021-06-14 12:14:24 -07:00
hsr net: hsr: fix mac_len checks 2021-05-24 14:10:28 -07:00
ieee802154 ieee802154: fix error return code in ieee802154_llsec_getparams() 2021-06-03 10:59:49 +02:00
ife net: remove redundant 'depends on NET' 2021-01-27 17:04:12 -08:00
ipv4 skmsg: Improve udp_bpf_recvmsg() accuracy 2021-06-21 16:48:11 +02:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2021-06-10 14:33:56 -07:00
iucv iucv: af_iucv.c: Couple of typo fixes 2021-03-28 17:31:13 -07:00
kcm revert "net: kcm: fix memory leak in kcm_sendmsg" 2021-06-07 13:34:37 -07:00
key
l2tp net: fix a concurrency bug in l2tp_tunnel_register() 2021-04-27 14:23:13 -07:00
l3mdev l3mdev: Correct function names in the kerneldoc comments 2021-03-28 17:56:55 -07:00
lapb net: lapb: Make "lapb_t1timer_running" able to detect an already running timer 2021-03-23 14:14:50 -07:00
llc llc2: Remove redundant assignment to rc 2021-04-27 14:16:14 -07:00
mac80211 mac80211: drop multicast fragments 2021-06-09 16:17:45 +02:00
mac802154 net: mac802154: Fix general protection fault 2021-04-06 22:42:16 +02:00
mpls mpls: Remove redundant assignment to err 2021-04-27 14:17:00 -07:00
mptcp mptcp: fix soft lookup in subflow_error_report() 2021-06-10 16:47:45 -07:00
ncsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-04-09 20:48:35 -07:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2021-06-10 14:33:56 -07:00
netlabel Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
netlink netlink: disable IRQs for netlink_lock_table() 2021-05-17 15:31:03 -07:00
netrom net: netrom: nr_in: Remove redundant assignment to ns 2021-04-28 13:59:08 -07:00
nfc nfc: fix NULL ptr dereference in llcp_sock_getname() after failed connect 2021-05-31 22:43:27 -07:00
nsh
openvswitch openvswitch: meter: fix race when getting now_ms. 2021-05-13 15:54:59 -07:00
packet net/packet: annotate accesses to po->ifindex 2021-06-16 12:48:18 -07:00
phonet
psample psample: Add additional metadata attributes 2021-03-14 15:00:43 -07:00
qrtr net: qrtr: fix OOB Read in qrtr_endpoint_post 2021-06-14 13:01:26 -07:00
rds net: rds: fix memory leak in rds_recvmsg 2021-06-08 16:32:17 -07:00
rfkill Another set of updates, all over the map: 2021-04-20 16:44:04 -07:00
rose net: rose: Fix fall-through warnings for Clang 2021-03-10 12:45:15 -08:00
rxrpc Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
sched sch_cake: revise docs for RFC 8622 LE PHB support 2021-06-14 12:10:57 -07:00
sctp sctp: fix the proc_handler for sysctl encap_port 2021-05-25 15:18:29 -07:00
smc Networking fixes for 5.13-rc4, including fixes from bpf, netfilter, 2021-05-26 17:44:49 -10:00
strparser
sunrpc NFS client updates for Linux 5.13 2021-05-07 11:23:41 -07:00
switchdev net: bridge: propagate extack through switchdev_port_attr_set 2021-02-14 17:38:11 -08:00
tipc tipc: simplify the finalize work queue 2021-05-18 13:22:09 -07:00
tls net/tls: Fix use-after-free after the TLS device goes down and up 2021-06-01 15:58:05 -07:00
unix net/af_unix: fix a data-race in unix_dgram_sendmsg / unix_release_sock 2021-06-16 12:51:55 -07:00
vmw_vsock vsock/vmci: Remove redundant assignment to err 2021-04-30 15:00:59 -07:00
wireless cfg80211: shut down interfaces on failed resume 2021-06-09 16:09:20 +02:00
x25 net/x25: Return the correct errno code 2021-06-03 15:13:56 -07:00
xdp xsk: Fix broken Tx ring validation 2021-06-18 16:59:20 +02:00
xfrm xfrm: ipcomp: remove unnecessary get_cpu() 2021-04-19 12:49:29 +02:00
compat.c net: Return the correct errno code 2021-06-03 15:13:56 -07:00
devres.c
Kconfig bpf, kconfig: Add consolidated menu entry for bpf with core options 2021-05-11 13:56:16 -07:00
Makefile net: l3mdev: use obj-$(CONFIG_NET_L3_MASTER_DEV) form in net/Makefile 2021-01-27 17:03:52 -08:00
socket.c net: make get_net_ns return error if NET_NS is disabled 2021-06-12 13:13:08 -07:00
sysctl_net.c net: Ensure net namespace isolation of sysctls 2021-04-12 13:27:11 -07:00