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mirror-linux/net/ipv4
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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
..
netfilter netfilter: nf_tables: remove register tracking infrastructure 2026-02-25 19:36:26 -08:00
Kconfig tcp: Convert tcp-md5 to use MD5 library instead of crypto_ahash 2025-10-17 17:14:54 -07:00
Makefile tcp: move tcp_rate_check_app_limited() to tcp.c 2026-01-22 18:28:48 -08:00
af_inet.c net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
ah4.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
arp.c kernel.h: drop hex.h and update all hex.h users 2026-01-20 19:44:19 -08:00
bpf_tcp_ca.c tcp: Pass flags to __tcp_send_ack 2025-03-17 13:56:38 +00:00
cipso_ipv4.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
datagram.c net: Convert proto callbacks from sockaddr to sockaddr_unsized 2025-11-04 19:10:33 -08:00
devinet.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
esp4.c tcp: Don't pass hashinfo to socket lookup helpers. 2025-08-25 17:53:35 -07:00
esp4_offload.c xfrm: Fix inner mode lookup in tunnel mode GSO segmentation 2025-12-04 09:54:53 +01:00
fib_frontend.c ipv4: Convert ->flowi4_tos to dscp_t. 2025-08-26 17:34:31 -07:00
fib_lookup.h ipv4: fib: Annotate access to struct fib_alias.fa_state. 2026-01-28 19:33:07 -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 ipv4: Convert ->flowi4_tos to dscp_t. 2025-08-26 17:34:31 -07:00
fib_semantics.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
fib_trie.c ipv4: fib: Annotate access to struct fib_alias.fa_state. 2026-01-28 19:33:07 -08:00
fou_bpf.c
…
fou_core.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
fou_nl.c fou: Don't allow 0 for FOU_ATTR_IPPROTO. 2026-01-17 16:00:24 -08:00
fou_nl.h tools: ynl-gen: add regeneration comment 2025-11-25 19:20:42 -08:00
gre_demux.c net: ip_gre: Fix spelling mistake "demultiplexor" -> "demultiplexer" 2025-04-24 18:20:40 -07:00
gre_offload.c
…
icmp.c icmp: fix ICMP error source address when xfrm policy matches 2026-02-28 15:08:15 -08:00
igmp.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
igmp_internal.h netlink: support dumping IPv4 multicast addresses 2025-02-11 11:26:53 +01:00
inet_connection_sock.c inet: remove three EXPORT_SYMBOL() 2026-02-26 18:27:21 -08:00
inet_diag.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
inet_fragment.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
inet_hashtables.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
inet_timewait_sock.c inet: Avoid ehash lookup race in inet_twsk_hashdance_schedule() 2025-10-17 16:08:43 -07:00
inetpeer.c inetpeer: use EXPORT_IPV6_MOD[_GPL]() 2025-02-14 13:09:39 -08:00
ip_forward.c
…
ip_fragment.c inet: frags: flush pending skbs in fqdir_pre_exit() 2025-12-10 01:15:27 -08:00
ip_gre.c ipv4: ip_gre: make ipgre_header() robust 2026-01-10 12:06:22 -08:00
ip_input.c net: ipv4: Remove extern udp_v4_early_demux()/tcp_v4_early_demux() in .c files 2025-10-29 17:05:30 -07:00
ip_options.c net: Switch to skb_dstref_steal/skb_dstref_restore for ip_route_input callers 2025-08-19 17:54:35 -07:00
ip_output.c ipv4: use dst4_mtu() instead of dst_mtu() 2026-02-02 17:49:29 -08:00
ip_sockglue.c net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
ip_tunnel.c ipv4: ip_tunnel: spread netdev_lockdep_set_classes() 2026-01-08 18:02:35 -08:00
ip_tunnel_core.c tunnels: reset the GSO metadata before reusing the skb 2025-09-09 13:03:33 +02:00
ip_vti.c ipv4: adopt dst_dev, skb_dst_dev and skb_dst_dev_net[_rcu] 2025-07-02 14:32:30 -07:00
ipcomp.c xfrm: delete x->tunnel as we delete x 2025-07-08 13:28:27 +02:00
ipconfig.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ipip.c netfilter: flowtable: Add IPIP rx sw acceleration 2025-11-28 00:00:38 +00:00
ipmr.c ipv4: use dst4_mtu() instead of dst_mtu() 2026-02-02 17:49:29 -08:00
ipmr_base.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
metrics.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
netfilter.c ipv4: Convert ->flowi4_tos to dscp_t. 2025-08-26 17:34:31 -07:00
netlink.c
…
nexthop.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
ping.c net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
proc.c ipv4: snmp: do not use SNMP_MIB_SENTINEL anymore 2025-09-08 18:06:20 -07:00
protocol.c
…
raw.c net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
raw_diag.c inet_diag: change inet_diag_bc_sk() first argument 2025-08-29 19:29:24 -07:00
route.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
syncookies.c tcp: fix potential race in tcp_v6_syn_recv_sock() 2026-02-19 14:02:19 -08:00
sysctl_net_ipv4.c tcp: accecn: enable AccECN 2026-02-03 15:13:25 +01:00
tcp.c net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
tcp_ao.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
tcp_bbr.c
…
tcp_bic.c
…
tcp_bpf.c net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
tcp_cdg.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
tcp_cong.c tcp: ECT_1_NEGOTIATION and NEEDS_ACCECN identifiers 2026-02-03 15:13:24 +01:00
tcp_cubic.c tcp_cubic: fix incorrect HyStart round start detection 2025-01-20 12:26:41 +00:00
tcp_dctcp.c tcp: helpers for ECN mode handling 2025-03-17 13:54:11 +00:00
tcp_dctcp.h tcp: Pass flags to __tcp_send_ack 2025-03-17 13:56:38 +00:00
tcp_diag.c inet_diag: change inet_diag_bc_sk() first argument 2025-08-29 19:29:24 -07:00
tcp_fastopen.c Including fixes from IPsec, Bluetooth and netfilter 2026-02-26 08:00:13 -08:00
tcp_highspeed.c
…
tcp_htcp.c
…
tcp_hybla.c
…
tcp_illinois.c
…
tcp_input.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-02-26 10:23:00 -08:00
tcp_ipv4.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-02-26 10:23:00 -08:00
tcp_lp.c net: tcp_lp: fix kernel-doc warnings and update outdated reference links 2025-10-28 17:52:44 -07:00
tcp_metrics.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
tcp_minisocks.c tcp: fix potential race in tcp_v6_syn_recv_sock() 2026-02-19 14:02:19 -08:00
tcp_nv.c
…
tcp_offload.c gro: flushing when CWR is set negatively affects AccECN 2026-02-03 15:13:24 +01:00
tcp_output.c tcp: reduce calls to tcp_schedule_loss_probe() 2026-02-24 17:44:33 -08:00
tcp_plb.c
…
tcp_recovery.c tcp: move tcp_rack_advance() to tcp_input.c 2026-01-28 19:31:51 -08:00
tcp_scalable.c
…
tcp_sigpool.c compiler-context-analysis: Change __cond_acquires to take return value 2026-01-05 16:43:29 +01:00
tcp_timer.c tcp: accecn: unset ECT if receive or send ACE=0 in AccECN negotiaion 2026-02-03 15:13:24 +01:00
tcp_ulp.c
…
tcp_vegas.c
…
tcp_vegas.h
…
tcp_veno.c
…
tcp_westwood.c
…
tcp_yeah.c
…
tunnel4.c
…
udp.c net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
udp_bpf.c net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
udp_diag.c inet_diag: change inet_diag_bc_sk() first argument 2025-08-29 19:29:24 -07:00
udp_impl.h net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
udp_offload.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-01-29 17:28:54 -08:00
udp_tunnel_core.c net: Convert proto_ops connect() callbacks to use sockaddr_unsized 2025-11-04 19:10:32 -08:00
udp_tunnel_nic.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
udp_tunnel_stub.c
…
udplite.c udplite: Fix null-ptr-deref in __udp_enqueue_schedule_skb(). 2026-02-20 16:14:10 -08:00
xfrm4_input.c xfrm: Set transport header to fix UDP GRO handling 2025-07-02 09:19:56 +02:00
xfrm4_output.c ipv4: adopt dst_dev, skb_dst_dev and skb_dst_dev_net[_rcu] 2025-07-02 14:32:30 -07:00
xfrm4_policy.c ipv4: Convert ->flowi4_tos to dscp_t. 2025-08-26 17:34:31 -07:00
xfrm4_protocol.c ipv4: Convert ip_route_input_noref() to dscp_t. 2024-10-03 16:21:21 -07:00
xfrm4_state.c
…
xfrm4_tunnel.c
…