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e3526bb92a
linux/net/core
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Cong Wang e3526bb92a skmsg: Move sk_redir from TCP_SKB_CB to skb 
Currently TCP_SKB_CB() is hard-coded in skmsg code, it certainly
does not work for any other non-TCP protocols. We can move them to
skb ext, but it introduces a memory allocation on fast path.

Fortunately, we only need to a word-size to store all the information,
because the flags actually only contains 1 bit so can be just packed
into the lowest bit of the "pointer", which is stored as unsigned
long.

Inside struct sk_buff, '_skb_refdst' can be reused because skb dst is
no longer needed after ->sk_data_ready() so we can just drop it.

Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20210223184934.6054-5-xiyou.wangcong@gmail.com
2021-02-26 12:28:03 -08:00
..
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: add nested_level variable in net_device 2020-09-28 15:00:15 -07:00
dev_ioctl.c net: fix dev_ifsioc_locked() race condition 2021-02-11 18:14:19 -08:00
dev.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2021-02-16 13:14:06 -08:00
devlink.c mlx5 subfunction support 2021-01-28 16:57:19 -08:00
drop_monitor.c genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
dst_cache.c
dst.c net: Correct the comment of dst_dev_put() 2020-09-10 13:28:57 -07:00
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 treewide: rename nla_strlcpy to nla_strscpy. 2020-11-16 08:08:54 -08:00
filter.c bpf: Compute data_end dynamically with JIT code 2021-02-26 12:28:03 -08:00
flow_dissector.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-02-16 17:51:13 -08:00
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
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 bpf: Clean up sockmap related Kconfigs 2021-02-26 12:28:03 -08:00
neighbour.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-02-02 14:21:31 -08:00
net_namespace.c net: initialize net->net_cookie at netns setup 2021-02-11 14:10:07 -08:00
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: add sysfs attribute to control napi threaded mode 2021-02-09 15:27:28 -08:00
net-sysfs.h net-sysfs: add netdev_change_owner() 2020-02-26 20:07:25 -08:00
net-traces.c
netclassid_cgroup.c net: Remove the err argument from sock_from_file 2020-12-04 22:32:40 +01:00
netevent.c
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 net: page_pool: simplify page recycling condition tests 2021-02-04 18:20:14 -08:00
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 net: fix dev_ifsioc_locked() race condition 2021-02-11 18:14:19 -08:00
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 skbuff: queue NAPI_MERGED_FREE skbs into NAPI cache instead of freeing 2021-02-13 14:32:04 -08:00
skmsg.c skmsg: Move sk_redir from TCP_SKB_CB to skb 2021-02-26 12:28:03 -08:00
sock_diag.c bpf, net: Rework cookie generator as per-cpu one 2020-09-30 11:50:35 -07:00
sock_map.c skmsg: Move sk_redir from TCP_SKB_CB to skb 2021-02-26 12:28:03 -08:00
sock_reuseport.c udp: Prevent reuseport_select_sock from reading uninitialized socks 2021-01-08 19:15:40 -08:00
sock.c net: indirect call helpers for ipv4/ipv6 dst_check functions 2021-02-03 14:51:40 -08:00
stream.c tcp: make sure EPOLLOUT wont be missed 2019-08-19 13:07:43 -07:00
sysctl_net_core.c net: sysctl: remove redundant #ifdef CONFIG_NET 2021-01-27 17:02:43 -08:00
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 net, veth: Alloc skb in bulk for ndo_xdp_xmit 2021-02-04 01:00:07 +01:00