OpenCloudOS-Kernel/net/core
Linus Torvalds f1947d7c8a Random number generator fixes for Linux 6.1-rc1.
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Merge tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random

Pull more random number generator updates from Jason Donenfeld:
 "This time with some large scale treewide cleanups.

  The intent of this pull is to clean up the way callers fetch random
  integers. The current rules for doing this right are:

   - If you want a secure or an insecure random u64, use get_random_u64()

   - If you want a secure or an insecure random u32, use get_random_u32()

     The old function prandom_u32() has been deprecated for a while
     now and is just a wrapper around get_random_u32(). Same for
     get_random_int().

   - If you want a secure or an insecure random u16, use get_random_u16()

   - If you want a secure or an insecure random u8, use get_random_u8()

   - If you want secure or insecure random bytes, use get_random_bytes().

     The old function prandom_bytes() has been deprecated for a while
     now and has long been a wrapper around get_random_bytes()

   - If you want a non-uniform random u32, u16, or u8 bounded by a
     certain open interval maximum, use prandom_u32_max()

     I say "non-uniform", because it doesn't do any rejection sampling
     or divisions. Hence, it stays within the prandom_*() namespace, not
     the get_random_*() namespace.

     I'm currently investigating a "uniform" function for 6.2. We'll see
     what comes of that.

  By applying these rules uniformly, we get several benefits:

   - By using prandom_u32_max() with an upper-bound that the compiler
     can prove at compile-time is ≤65536 or ≤256, internally
     get_random_u16() or get_random_u8() is used, which wastes fewer
     batched random bytes, and hence has higher throughput.

   - By using prandom_u32_max() instead of %, when the upper-bound is
     not a constant, division is still avoided, because
     prandom_u32_max() uses a faster multiplication-based trick instead.

   - By using get_random_u16() or get_random_u8() in cases where the
     return value is intended to indeed be a u16 or a u8, we waste fewer
     batched random bytes, and hence have higher throughput.

  This series was originally done by hand while I was on an airplane
  without Internet. Later, Kees and I worked on retroactively figuring
  out what could be done with Coccinelle and what had to be done
  manually, and then we split things up based on that.

  So while this touches a lot of files, the actual amount of code that's
  hand fiddled is comfortably small"

* tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
  prandom: remove unused functions
  treewide: use get_random_bytes() when possible
  treewide: use get_random_u32() when possible
  treewide: use get_random_{u8,u16}() when possible, part 2
  treewide: use get_random_{u8,u16}() when possible, part 1
  treewide: use prandom_u32_max() when possible, part 2
  treewide: use prandom_u32_max() when possible, part 1
2022-10-16 15:27:07 -07:00
..
Makefile net: skb: export skb drop reaons to user by TRACE_DEFINE_ENUM 2022-09-07 15:28:08 +01:00
bpf_sk_storage.c net: Fix data-races around sysctl_optmem_max. 2022-08-24 13:46:57 +01:00
datagram.c tcp: TX zerocopy should not sense pfmemalloc status 2022-09-02 12:29:02 +01:00
dev.c net: skb: introduce and use a single page frag cache 2022-09-29 18:48:15 -07:00
dev.h net: add skb_defer_max sysctl 2022-05-16 11:33:59 +01:00
dev_addr_lists.c net: extract a few internals from netdevice.h 2022-04-07 20:32:09 -07:00
dev_addr_lists_test.c net: kunit: add a test for dev_addr_lists 2021-11-20 12:25:57 +00:00
dev_ioctl.c net: rename reference+tracking helpers 2022-06-09 21:52:55 -07:00
devlink.c net: devlink: add port_init/fini() helpers to allow pre-register/post-unregister functions 2022-09-30 18:17:16 -07:00
drop_monitor.c genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
dst.c net: rename reference+tracking helpers 2022-06-09 21:52:55 -07:00
dst_cache.c wireguard: device: reset peer src endpoint when netns exits 2021-11-29 19:50:45 -08:00
failover.c net: rename reference+tracking helpers 2022-06-09 21:52:55 -07:00
fib_notifier.c
fib_rules.c fib: expand fib_rule_policy 2021-12-16 07:18:35 -08:00
filter.c Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2022-10-03 13:02:49 -07:00
flow_dissector.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-22 13:02:10 -07:00
flow_offload.c flow_offload: Introduce flow_match_l2tpv3 2022-09-20 09:13:38 +02:00
gen_estimator.c net: sched: Remove Qdisc::running sequence counter 2021-10-18 12:54:41 +01:00
gen_stats.c net: sched: fix misuse of qcpu->backlog in gnet_stats_add_queue_cpu 2022-08-16 19:38:20 -07:00
gro.c gro: add support of (hw)gro packets to gro stack 2022-10-03 12:38:34 +01:00
gro_cells.c net: drop the weight argument from netif_napi_add 2022-09-28 18:57:14 -07:00
hwbm.c
link_watch.c net: rename reference+tracking helpers 2022-06-09 21:52:55 -07:00
lwt_bpf.c bpf, lwt: Fix crash when using bpf_skb_set_tunnel_key() from bpf_xmit lwt hook 2022-04-22 17:45:25 +02:00
lwtunnel.c xfrm: lwtunnel: add lwtunnel support for xfrm interfaces in collect_md mode 2022-08-29 10:44:08 +02:00
neighbour.c treewide: use prandom_u32_max() when possible, part 1 2022-10-11 17:42:55 -06:00
net-procfs.c net: extract a few internals from netdevice.h 2022-04-07 20:32:09 -07:00
net-sysfs.c net-sysfs: Convert to use sysfs_emit() APIs 2022-09-30 12:27:44 +01:00
net-sysfs.h
net-traces.c tcp: add tracepoint for checksum errors 2021-05-14 15:26:03 -07:00
net_namespace.c Revert "net: set proper memcg for net_init hooks allocations" 2022-09-28 09:20:37 -07:00
netclassid_cgroup.c core: Variable type completion 2022-08-31 09:40:34 +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 net: move from strlcpy with unused retval to strscpy 2022-08-22 18:06:18 -07:00
netprio_cgroup.c bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode 2021-09-13 16:35:58 -07:00
of_net.c Revert "of: net: support NVMEM cells with MAC in text format" 2022-01-12 14:14:36 +00:00
page_pool.c - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
pktgen.c treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
ptp_classifier.c ptp: Add generic PTP is_sync() function 2022-03-07 11:31:34 +00:00
request_sock.c
rtnetlink.c net: rtnetlink: Enslave device before bringing it up 2022-09-20 08:37:44 -07:00
scm.c memcg: enable accounting for scm_fp_list objects 2021-07-20 06:00:38 -07:00
secure_seq.c tcp: Fix data-races around sysctl knobs related to SYN option. 2022-07-20 10:14:49 +01:00
selftests.c net: core: constify mac addrs in selftests 2021-10-24 13:59:44 +01:00
skbuff.c net: skb: introduce and use a single page frag cache 2022-09-29 18:48:15 -07:00
skmsg.c skmsg: Schedule psock work if the cached skb exists on the psock 2022-09-26 17:48:05 +02:00
sock.c ipv6: Fix data races around sk->sk_prot. 2022-10-12 17:50:37 -07:00
sock_destructor.h skb_expand_head() adjust skb->truesize incorrectly 2021-10-22 12:35:51 -07:00
sock_diag.c net: Don't include filter.h from net/sock.h 2021-12-29 08:48:14 -08:00
sock_map.c Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2022-08-17 20:29:36 -07:00
sock_reuseport.c tcp: Fix data-races around sysctl_tcp_migrate_req. 2022-07-18 12:21:54 +01:00
stream.c treewide: use prandom_u32_max() when possible, part 1 2022-10-11 17:42:55 -06:00
sysctl_net_core.c net: sysctl: remove unused variable long_max 2022-09-07 15:31:19 +01:00
timestamping.c
tso.c net: tso: add UDP segmentation support 2020-06-18 20:46:23 -07:00
utils.c net: core: Use csum_replace_by_diff() and csum_sub() instead of opencoding 2022-02-21 11:40:44 +00:00
xdp.c xdp: improve page_pool xdp_return performance 2022-09-26 11:28:19 -07:00