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0835bc72510ffbd2dba1827bd17ac08e31dc2485
linux/net
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Eric Dumazet 8341c989ac net: remove addr_len argument of recvmsg() handlers 
Use msg->msg_namelen as a place holder instead of a
temporary variable, notably in inet[6]_recvmsg().

This removes stack canaries and allows tail-calls.

$ scripts/bloat-o-meter -t vmlinux.old vmlinux
add/remove: 0/0 grow/shrink: 2/19 up/down: 26/-532 (-506)
Function                                     old     new   delta
rawv6_recvmsg                                744     767     +23
vsock_dgram_recvmsg                           55      58      +3
vsock_connectible_recvmsg                     50      47      -3
unix_stream_recvmsg                          161     158      -3
unix_seqpacket_recvmsg                        62      59      -3
unix_dgram_recvmsg                            42      39      -3
tcp_recvmsg                                  546     543      -3
mptcp_recvmsg                               1568    1565      -3
ping_recvmsg                                 806     800      -6
tcp_bpf_recvmsg_parser                       983     974      -9
ip_recv_error                                588     576     -12
ipv6_recv_rxpmtu                             442     428     -14
udp_recvmsg                                 1243    1224     -19
ipv6_recv_error                             1046    1024     -22
udpv6_recvmsg                               1487    1461     -26
raw_recvmsg                                  465     437     -28
udp_bpf_recvmsg                             1027     984     -43
sock_common_recvmsg                          103      27     -76
inet_recvmsg                                 257     175     -82
inet6_recvmsg                                257     175     -82
tcp_bpf_recvmsg                              663     568     -95
Total: Before=25143834, After=25143328, chg -0.00%

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260227151120.1346573-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-03-02 18:17:17 -08:00
..
6lowpan
net: replace ND_PRINTK with dynamic debug
2025-07-10 15:27:32 -07:00
9p
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
802
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
8021q
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
appletalk
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
atm
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
ax25
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
batman-adv
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
bluetooth
Merge tag 'net-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2026-02-26 08:00:13 -08:00
bpf
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
bridge
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2026-02-26 10:23:00 -08:00
caif
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
can
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
ceph
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
core
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
dcb
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
devlink
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
dns_resolver
keys, dns: Use kmalloc_flex to improve dns_resolver_preparse
2026-02-28 08:48:21 -08:00
dsa
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
ethernet
net: optimize eth_type_trans() vs CONFIG_STACKPROTECTOR_STRONG=y
2025-11-24 19:27:31 -08:00
ethtool
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
handshake
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
hsr
net/hsr: update outdated comments
2026-02-27 17:24:58 -08:00
ieee802154
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
ife
…
ipv4
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
ipv6
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
iucv
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
kcm
kcm: fix zero-frag skb in frag_list on partial sendmsg error
2026-02-23 17:26:55 -08:00
key
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
l2tp
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
l3mdev
net: fib_rules: Fix iif / oif matching on L3 master device
2025-04-15 17:54:56 -07:00
lapb
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
llc
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
mac80211
Merge tag 'net-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2026-02-26 08:00:13 -08:00
mac802154
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
mctp
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
mpls
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
mptcp
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
ncsi
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
netfilter
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2026-02-26 10:23:00 -08:00
netlabel
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
netlink
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
netrom
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nfc
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
nsh
nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment().
2024-04-26 12:20:01 +02:00
openvswitch
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
packet
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
phonet
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
psample
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
psp
Merge tag 'net-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2026-02-26 08:00:13 -08:00
qrtr
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
rds
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2026-02-26 10:23:00 -08:00
rfkill
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
rose
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
rxrpc
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
sched
net: sched: sch_dualpi2: use qdisc_dequeue_drop() for dequeue drops
2026-02-28 15:31:35 -08:00
sctp
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
shaper
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
smc
Merge tag 'net-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2026-02-26 08:00:13 -08:00
strparser
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2025-11-13 12:35:38 -08:00
sunrpc
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
switchdev
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
tipc
Merge tag 'net-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2026-02-26 08:00:13 -08:00
tls
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
unix
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
vmw_vsock
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
wireless
Merge tag 'net-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2026-02-26 08:00:13 -08:00
x25
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
xdp
Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
2026-02-22 08:26:33 -08:00
xfrm
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
compat.c
socket: Unify getsockname and getpeername implementation
2025-11-26 13:45:23 -07:00
devres.c
…
Kconfig
net: Kconfig: discourage drop_monitor enablement
2025-10-17 16:29:26 -07:00
Kconfig.debug
rtnetlink: Add per-netns RTNL.
2024-10-08 15:16:59 +02:00
Makefile
psp: base PSP device support
2025-09-18 12:32:06 +02:00
socket.c
net: Drop the lock in skb_may_tx_timestamp()
2026-02-24 11:27:29 +01:00
sysctl_net.c
sysctl: Remove check for sentinel element in ctl_table arrays
2024-06-13 10:50:52 +02:00