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

..

ila

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

netfilter

netfilter: nf_tables: remove register tracking infrastructure

2026-02-25 19:36:26 -08:00

addrconf_core.c

ipv6: Ensure natural alignment of const ipv6 loopback and router addresses

2024-01-30 12:43:18 +01:00

addrconf.c

Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses

2026-02-22 08:26:33 -08:00

addrlabel.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

af_inet6.c

net: remove addr_len argument of recvmsg() handlers

2026-03-02 18:17:17 -08:00

ah6.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

anycast.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

calipso.c

Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses

2026-02-22 08:26:33 -08:00

datagram.c

net: remove addr_len argument of recvmsg() handlers

2026-03-02 18:17:17 -08:00

esp6_offload.c

xfrm: Fix inner mode lookup in tunnel mode GSO segmentation

2025-12-04 09:54:53 +01:00

esp6.c

tcp: Don't pass hashinfo to socket lookup helpers.

2025-08-25 17:53:35 -07:00

exthdrs_core.c

ipv6: Fix out-of-bounds access in ipv6_find_tlv()

2023-05-24 08:43:39 +01:00

exthdrs_offload.c

net: gso: add HBH extension header offload support

2024-01-05 08:11:49 -08:00

exthdrs.c

ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data()

2026-02-13 12:24:05 -08:00

fib6_notifier.c

net: do not acquire rtnl in fib_seq_sum()

2024-10-11 15:35:05 -07:00

fib6_rules.c

ipv6: fib_rules: Add DSCP mask matching

2025-02-21 16:08:48 -08:00

fou6.c

net: Add MODULE_DESCRIPTION entries to network modules

2020-06-20 21:33:57 -07:00

icmp.c

ipv6: icmp: icmpv6_xrlim_allow() optimization if net.ipv6.icmp.ratelimit is zero

2026-02-18 16:46:37 -08:00

inet6_connection_sock.c

tcp: move inet6_csk_update_pmtu() to tcp_ipv6.c

2026-02-24 17:47:27 -08:00

inet6_hashtables.c

tcp: Remove inet6_hash().

2025-09-22 11:38:43 -07:00

ioam6_iptunnel.c

ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data()

2026-02-13 12:24:05 -08:00

ioam6.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

ip6_checksum.c

udp: move udp6_csum_init() back to net/ipv6/udp.c

2026-02-24 16:30:40 -08:00

ip6_fib.c

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-21 20:03:00 -08:00

ip6_flowlabel.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

ip6_gre.c

ipv6: use dst6_mtu() instead of dst_mtu()

2026-02-02 17:49:29 -08:00

ip6_icmp.c

icmp: fix icmp_ndo_send address translation for reply direction

2025-09-01 12:54:41 -07:00

ip6_input.c

net/ipv6: Introduce payload_len helpers

2026-02-06 20:50:03 -08:00

ip6_offload.c

net/ipv6: Remove jumbo_remove step from TX path

2026-02-06 20:50:12 -08:00

ip6_offload.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

ip6_output.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

ip6_tunnel.c

ipv6: use dst6_mtu() instead of dst_mtu()

2026-02-02 17:49:29 -08:00

ip6_udp_tunnel.c

net: Convert proto_ops connect() callbacks to use sockaddr_unsized

2025-11-04 19:10:32 -08:00

ip6_vti.c

ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers

2025-07-02 14:32:30 -07:00

ip6mr.c

ipv6: ip6_mc_input() and ip6_mr_input() cleanups

2025-07-02 14:32:30 -07:00

ipcomp6.c

xfrm: delete x->tunnel as we delete x

2025-07-08 13:28:27 +02:00

ipv6_sockglue.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

Kconfig

ipv6: sr: Use HMAC-SHA1 and HMAC-SHA256 library functions

2025-08-26 18:11:29 -07:00

Makefile

gro: inline tcp6_gro_receive()

2026-01-21 19:28:32 -08:00

mcast_snoop.c

net: bridge: mcast: fix broken length + header check for MRDv6 Adv.

2021-04-27 14:02:06 -07:00

mcast.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

mip6.c

net: fill in MODULE_DESCRIPTION()s for ipv6 modules

2024-02-09 14:12:01 -08:00

ndisc.c

ipv6: annotate data-race in ndisc_router_discovery()

2026-01-20 18:37:45 -08:00

netfilter.c

netfilter: Switch to skb_dstref_steal to clear dst_entry

2025-08-19 17:54:19 -07:00

output_core.c

net/ipv6: Introduce payload_len helpers

2026-02-06 20:50:03 -08:00

ping.c

net: remove addr_len argument of recvmsg() handlers

2026-03-02 18:17:17 -08:00

proc.c

ipv6: snmp: do not track per idev ICMP6_MIB_RATELIMITHOST

2025-09-08 18:06:20 -07:00

protocol.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

raw.c

net: remove addr_len argument of recvmsg() handlers

2026-03-02 18:17:17 -08:00

reassembly.c

ipv6: discard fragment queue earlier if there is malformed datagram

2026-02-27 19:08:54 -08:00

route.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

rpl_iptunnel.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-07-17 11:00:33 -07:00

rpl.c

ipv6: rpl: Remove pskb(_may)?_pull() in ipv6_rpl_srh_rcv().

2023-06-19 11:32:58 -07:00

seg6_hmac.c

ipv6: sr: Prepare HMAC key ahead of time

2025-08-26 18:11:29 -07:00

seg6_iptunnel.c

ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers

2025-07-02 14:32:30 -07:00

seg6_local.c

ipv6: adopt dst_dev() helper

2025-07-02 14:32:30 -07:00

seg6.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

sit.c

ipv6: sit: Replace deprecated strcpy with strscpy

2026-02-28 10:06:29 -08:00

syncookies.c

tcp: accecn: AccECN negotiation

2025-09-18 08:47:51 +02:00

sysctl_net_ipv6.c

sysctl: treewide: constify the ctl_table argument of proc_handlers

2024-07-24 20:59:29 +02:00

tcp_ao.c

net/tcp: Wire up l3index to TCP-AO

2023-10-27 10:35:46 +01:00

tcp_ipv6.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2026-02-26 10:23:00 -08:00

tcpv6_offload.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2026-01-29 17:28:54 -08:00

tunnel6.c

net: fill in MODULE_DESCRIPTION()s for ipv6 modules

2024-02-09 14:12:01 -08:00

udp_impl.h

net: remove addr_len argument of recvmsg() handlers

2026-03-02 18:17:17 -08:00

udp_offload.c

gro: inline tcp6_gro_complete()

2026-01-21 19:28:32 -08:00

udp.c

net: remove addr_len argument of recvmsg() handlers

2026-03-02 18:17:17 -08:00

udplite.c

udplite: Fix null-ptr-deref in __udp_enqueue_schedule_skb().

2026-02-20 16:14:10 -08:00

xfrm6_input.c

xfrm: Set transport header to fix UDP GRO handling

2025-07-02 09:19:56 +02:00

xfrm6_output.c

ipv6: adopt skb_dst_dev() and skb_dst_dev_net[_rcu]() helpers

2025-07-02 14:32:30 -07:00

xfrm6_policy.c

xfrm6: fix uninitialized saddr in xfrm6_get_saddr()

2026-02-02 08:03:47 +01:00

xfrm6_protocol.c

xfrm: add support for UDPv6 encapsulation of ESP

2020-04-28 11:28:36 +02:00

xfrm6_state.c

xfrm: remove output_finish indirection from xfrm_state_afinfo

2020-05-06 09:40:08 +02:00

xfrm6_tunnel.c

xfrm: flush all states in xfrm_state_fini

2025-08-06 09:23:38 +02:00