John Fastabend cfea28f890 bpf, sockmap: Skb verdict SK_PASS to self already checked rmem limits ... For sk_skb case where skb_verdict program returns SK_PASS to continue to pass packet up the stack, the memory limits were already checked before enqueuing in skb_queue_tail from TCP side. So, lets remove the extra checks here. The theory is if the TCP stack believes we have memory to receive the packet then lets trust the stack and not double check the limits. In fact the accounting here can cause a drop if sk_rmem_alloc has increased after the stack accepted this packet, but before the duplicate check here. And worse if this happens because TCP stack already believes the data has been received there is no retransmit. Fixes: 51199405f9 ("bpf: skb_verdict, support SK_PASS on RX BPF path") Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/160226857664.5692.668205469388498375.stgit@john-Precision-5820-Tower		2020-10-11 18:00:57 -07:00
..
bpf_sk_storage.c	bpf: Change bpf_sk_storage_*() to accept ARG_PTR_TO_BTF_ID_SOCK_COMMON	2020-09-25 13:58:01 -07:00
datagram.c	net: zerocopy: combine pages in zerocopy_sg_from_iter()	2020-08-20 16:12:50 -07:00
datagram.h	net/core: Allow the compiler to verify declaration and definition consistency	2019-03-27 13:49:44 -07:00
dev_addr_lists.c	net: explain the lockdep annotations for dev_uc_unsync()	2020-06-28 21:38:27 -07:00
dev_ioctl.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
dev.c	bpf: Add redirect_peer helper	2020-10-11 10:21:04 -07:00
devlink.c	drop_monitor: Filter control packets in drop monitor	2020-09-30 18:01:26 -07:00
drop_monitor.c	drop_monitor: Filter control packets in drop monitor	2020-09-30 18:01:26 -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: Correct the comment of dst_dev_put()	2020-09-10 13:28:57 -07:00
failover.c	failover: allow name change on IFF_UP slave interfaces	2019-04-10 22:12:26 -07:00
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: fix fib_rule_ops indirect call wrappers when CONFIG_IPV6=m	2020-09-08 20:09:08 -07:00
filter.c	bpf: Always return target ifindex in bpf_fib_lookup	2020-10-11 21:59:20 +02:00
flow_dissector.c	net: flow_dissector: avoid indirect call to DSA .flow_dissect for generic case	2020-09-26 14:17:59 -07:00
flow_offload.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-07-25 17:49:04 -07:00
gen_estimator.c	net_sched: gen_estimator: extend packet counter to 64bit	2019-11-06 21:51:36 -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: make sure device is up in gro_cells_receive()	2019-03-10 11:07:14 -07:00
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	net: add net available in build_state	2020-03-29 22:30:57 -07:00
lwtunnel.c	net: ipv6: add rpl sr tunnel	2020-03-29 22:30:57 -07:00
Makefile	ethtool: move to its own directory	2019-12-12 17:07:05 -08:00
neighbour.c	net: neighbor: add fdb extended attribute	2020-06-24 14:36:33 -07:00
net_namespace.c	bpf, net: Rework cookie generator as per-cpu one	2020-09-30 11:50:35 -07:00
net-procfs.c	net-sysfs: add backlog len and CPU id to softnet data	2020-09-21 13:56:37 -07:00
net-sysfs.c	net-sysfs: Fix inconsistent of format with argument type in net-sysfs.c	2020-10-01 18:45:23 -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	cgroup, netclassid: remove double cond_resched	2020-04-21 15:44:30 -07:00
netevent.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
netpoll.c	net: make sure napi_list is safe for RCU traversal	2020-09-10 13:08:46 -07:00
netprio_cgroup.c	netprio_cgroup: Fix unlimited memory leak of v2 cgroups	2020-05-09 20:59:21 -07:00
page_pool.c	net: page pool: allow to pass zero flags to page_pool_init()	2020-03-29 21:49:20 -07:00
pktgen.c	pktgen: Fix inconsistent of format with argument type in pktgen.c	2020-10-01 18:45:23 -07:00
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	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2020-08-03 18:27:40 -07:00
scm.c	fs: Add receive_fd() wrapper for __receive_fd()	2020-07-13 11:03:44 -07:00
secure_seq.c	crypto: lib/sha1 - remove unnecessary includes of linux/cryptohash.h	2020-05-08 15:32:17 +10:00
skbuff.c	net: remove unnecessary NULL checking in napi_consume_skb()	2020-09-20 14:17:20 -07:00
skmsg.c	bpf, sockmap: Skb verdict SK_PASS to self already checked rmem limits	2020-10-11 18:00:57 -07:00
sock_diag.c	bpf, net: Rework cookie generator as per-cpu one	2020-09-30 11:50:35 -07:00
sock_map.c	bpf, net: Rework cookie generator as per-cpu one	2020-09-30 11:50:35 -07:00
sock_reuseport.c	udp: Copy has_conns in reuseport_grow().	2020-07-21 15:31:02 -07:00
sock.c	mptcp: add sk_stop_timer_sync helper	2020-09-24 19:58:34 -07:00
stream.c	tcp: make sure EPOLLOUT wont be missed	2019-08-19 13:07:43 -07:00
sysctl_net_core.c	net: add option to not create fall-back tunnels in root-ns as well	2020-08-28 06:52:44 -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	bpf, xdp: Remove XDP_QUERY_PROG and XDP_QUERY_PROG_HW XDP commands	2020-07-25 20:37:02 -07:00