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2a251b85ce918e8552c604df4770040eae4432be
linux/net/core
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Eric Dumazet 2b235765e9 scm: use masked_user_access_begin() in put_cmsg() 
Use the greatest and latest uaccess construct to get an optimal code.

Before :

	lea    (%r9,%rcx,1),%r10
	movabs $<USER_PTR_MAX>,%r11
	mov    $0xfffffff2,%eax
	cmp    %rcx,%r10
	jb     ffffffff81cdc312 <put_cmsg+0x152>
	cmp    %r11,%r10
	ja     ffffffff81cdc312 <put_cmsg+0x152>
	stac
	lfence
	mov    %r9,(%rcx)

After:

	movabs $<USER_PTR_MAX>,%r9
	cmp    %r9,%rax
	cmova  %r9,%rax
	stac
	mov    %rcx,(%rax)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250925224914.3590290-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-09-29 18:03:42 -07:00
..
bpf_sk_storage.c
bpf: Remove unnecessary BTF lookups in bpf_sk_storage_tracing_allowed
2025-01-29 08:51:51 -08:00
datagram.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2025-08-29 11:48:01 -07:00
dev_addr_lists_test.c
net: dev_addr_lists: move locking out of init/exit in kunit
2024-04-15 10:26:35 +01:00
dev_addr_lists.c
net: s/dev_pre_changeaddr_notify/netif_pre_changeaddr_notify/
2025-07-18 17:27:47 -07:00
dev_api.c
net: define an enum for the napi threaded state
2025-07-24 18:34:55 -07:00
dev_ioctl.c
net: dev_ioctl: take ops lock in hwtstamp lower paths
2025-09-09 18:13:36 -07:00
dev.c
net: gso: restore ids of outer ip headers correctly
2025-09-25 12:42:49 +02:00
dev.h
net: prevent deadlocks when enabling NAPIs with mixed kthread config
2025-08-12 14:43:05 +02:00
devmem.c
net: devmem: pull out dma_dev out of net_devmem_bind_dmabuf
2025-08-28 16:05:32 -07:00
devmem.h
net: devmem: pull out dma_dev out of net_devmem_bind_dmabuf
2025-08-28 16:05:32 -07:00
drop_monitor.c
treewide, timers: Rename from_timer() to timer_container_of()
2025-06-08 09:07:37 +02:00
dst_cache.c
net: dst: annotate data-races around dst->obsolete
2025-07-02 14:32:29 -07:00
dst.c
net: dst: introduce dst->dev_rcu
2025-08-29 19:36:31 -07:00
failover.c
net: failover: use IFF_NO_ADDRCONF flag to prevent ipv6 addrconf
2022-12-12 15:18:25 -08:00
fib_notifier.c
net: do not acquire rtnl in fib_seq_sum()
2024-10-11 15:35:05 -07:00
fib_rules.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2025-04-17 12:26:50 -07:00
filter.c
Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2025-09-24 10:22:37 -07:00
flow_dissector.c
net: remove '__' from __skb_flow_get_ports()
2025-02-24 14:27:53 -08:00
flow_offload.c
tc: flower: Enable offload support IPSEC SPI field.
2023-08-02 10:09:32 +01:00
gen_estimator.c
net_sched: gen_estimator: fix est_timer() vs CONFIG_PREEMPT_RT=y
2025-08-29 19:04:20 -07:00
gen_stats.c
net: Remove the obsolte u64_stats_fetch_*_irq() users (net).
2022-10-28 20:13:54 -07:00
gro_cells.c
net: move netdev_max_backlog to net_hotdata
2024-03-07 21:12:42 -08:00
gro.c
tcp: add datapath logic for PSP with inline key exchange
2025-09-18 12:32:06 +02:00
gso.c
net: introduce struct net_hotdata
2024-03-07 21:12:41 -08:00
hotdata.c
tcp: move tcp_memory_allocated into net_aligned_data
2025-07-02 14:22:02 -07:00
hwbm.c
…
ieee8021q_helpers.c
net: ieee8021q: fix insufficient table-size assertion
2025-07-01 12:55:49 +02:00
link_watch.c
net: replace use of system_unbound_wq with system_dfl_wq
2025-09-22 17:40:30 -07:00
lock_debug.c
netdev: fix the locking for netdev notifications
2025-04-17 18:55:14 -07:00
lwt_bpf.c
ipv4: Convert ->flowi4_tos to dscp_t.
2025-08-26 17:34:31 -07:00
lwtunnel.c
inet: Remove rtnl_is_held arg of lwtunnel_valid_encap_type(_attr)?().
2025-05-20 19:18:24 -07:00
Makefile
queue_api: add support for fetching per queue DMA dev
2025-08-28 16:05:31 -07:00
mp_dmabuf_devmem.h
memory-provider: dmabuf devmem memory provider
2024-09-11 20:44:31 -07:00
neighbour.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2025-07-26 11:49:45 -07:00
net_namespace.c
Merge tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2025-07-30 08:58:55 -07:00
net_test.c
pfcp: always set pfcp metadata
2024-04-01 10:49:28 +01:00
net-procfs.c
net: use NUMA drop counters for softnet_data.dropped
2025-09-14 11:35:17 -07:00
net-sysfs.c
net: Prevent RPS table overwrite of active flows
2025-08-27 18:24:13 -07:00
net-sysfs.h
net: remove RTNL use for /proc/sys/net/core/rps_default_mask
2025-07-07 18:42:12 -07:00
net-traces.c
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
netclassid_cgroup.c
net, bpf: Fix RCU usage in task_cls_state() for BPF programs
2025-06-11 21:30:29 +02:00
netdev_queues.c
queue_api: add support for fetching per queue DMA dev
2025-08-28 16:05:31 -07:00
netdev_rx_queue.c
net: add helper to pre-check if PP for an Rx queue will be unreadable
2025-09-04 10:19:17 +02:00
netdev-genl-gen.c
net: define an enum for the napi threaded state
2025-07-24 18:34:55 -07:00
netdev-genl-gen.h
net: devmem: TCP tx netlink api
2025-05-13 11:12:48 +02:00
netdev-genl.c
net: devmem: allow binding on rx queues with same DMA devices
2025-08-28 16:05:32 -07:00
netevent.c
net: core: Correct function name netevent_unregister_notifier() in the kerneldoc
2021-03-28 17:56:56 -07:00
netmem_priv.h
page_pool: Track DMA-mapped pages and unmap them when destroying the pool
2025-04-14 16:30:29 -07:00
netpoll.c
net: netpoll: use synchronize_net() instead of synchronize_rcu()
2025-09-19 17:52:06 -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
net: Explicitly include correct DT includes
2023-07-27 20:33:16 -07:00
page_pool_priv.h
net: page_pool: don't try to stash the napi id
2025-01-27 14:37:41 -08:00
page_pool_user.c
net: use napi_id_valid helper
2025-02-17 16:43:04 -08:00
page_pool.c
page_pool: always add GFP_NOWARN for ATOMIC allocations
2025-09-15 18:13:49 -07:00
pktgen.c
net: pktgen: Use min()/min_t() to improve pktgen_finalize_skb()
2025-08-21 10:12:11 +02:00
ptp_classifier.c
ptp: Add generic PTP is_sync() function
2022-03-07 11:31:34 +00:00
request_sock.c
tcp: Remove stale locking comment for TFO.
2025-09-23 18:21:36 -07:00
rtnetlink.c
rtnetlink: add needed_{head,tail}room attributes
2025-09-19 17:21:55 -07:00
scm.c
scm: use masked_user_access_begin() in put_cmsg()
2025-09-29 18:03:42 -07:00
secure_seq.c
net: Retire DCCP socket.
2025-04-11 18:58:10 -07:00
selftests.c
net: selftests: add PHY-loopback test for bad TCP checksums
2025-07-18 17:19:46 -07:00
skb_fault_injection.c
net: Implement fault injection forcing skb reallocation
2024-11-12 12:05:33 +01:00
skbuff.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2025-09-25 11:00:59 -07:00
skmsg.c
net: replace use of system_wq with system_percpu_wq
2025-09-22 17:40:30 -07:00
sock_destructor.h
skb_expand_head() adjust skb->truesize incorrectly
2021-10-22 12:35:51 -07:00
sock_diag.c
net: WQ_PERCPU added to alloc_workqueue users
2025-09-22 17:40:30 -07:00
sock_map.c
bpf: Remove attach_type in sockmap_link
2025-07-11 10:51:55 -07:00
sock_reuseport.c
net: core: annotate socks of struct sock_reuseport with __counted_by
2024-08-02 17:16:59 -07:00
sock.c
net: move sk->sk_err_soft and sk->sk_sndbuf
2025-09-22 17:55:24 -07:00
stream.c
net: stream: add description for sk_stream_write_space()
2025-07-18 16:57:21 -07:00
sysctl_net_core.c
net: remove RTNL use for /proc/sys/net/core/rps_default_mask
2025-07-07 18:42:12 -07:00
timestamping.c
net: Add the possibility to support a selected hwtstamp in netdevice
2024-12-16 12:51:40 +00:00
tso.c
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
utils.c
net: Fix checksum update for ILA adj-transport
2025-05-30 19:53:51 -07:00
xdp.c
net: xdp: pass full flags to xdp_update_skb_shared_info()
2025-09-11 12:00:20 +02:00