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8341c989ac77d712c7d6e2bce29e8a4bcb2eeae4
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
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_offload.c
xfrm: Fix inner mode lookup in tunnel mode GSO segmentation
2025-12-04 09:54:53 +01:00
esp4.c
tcp: Don't pass hashinfo to socket lookup helpers.
2025-08-25 17:53:35 -07:00
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
ip_tunnel: convert __be16 tunnel flags to bitmaps
2024-04-01 10:49:28 +01:00
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
net: gro: rename skb_gro_header_hard()
2024-03-05 13:30:11 +01:00
icmp.c
icmp: fix ICMP error source address when xfrm policy matches
2026-02-28 15:08:15 -08:00
igmp_internal.h
netlink: support dumping IPv4 multicast addresses
2025-02-11 11:26:53 +01:00
igmp.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
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
net: fix IPSTATS_MIB_OUTFORWDATAGRAMS increment after fragment check
2023-10-13 09:58:45 -07:00
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_core.c
tunnels: reset the GSO metadata before reusing the skb
2025-09-09 13:03:33 +02:00
ip_tunnel.c
ipv4: ip_tunnel: spread netdev_lockdep_set_classes()
2026-01-08 18:02:35 -08:00
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_base.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
ipmr.c
ipv4: use dst4_mtu() instead of dst_mtu()
2026-02-02 17:49:29 -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
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
net: Remove the member netns_ok
2021-05-17 15:29:35 -07:00
raw_diag.c
inet_diag: change inet_diag_bc_sk() first argument
2025-08-29 19:29:24 -07:00
raw.c
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
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_ao.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
tcp_bbr.c
tcp: Add new args for cong_control in tcp_congestion_ops
2024-05-02 16:26:56 -07:00
tcp_bic.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
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
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
tcp_highspeed.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_htcp.c
tcp: Use clamp() in htcp_alpha_update()
2024-08-06 12:16:25 -07:00
tcp_hybla.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_illinois.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
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: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
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
prandom: remove prandom_u32_max()
2022-12-20 03:13:45 +01:00
tcp_recovery.c
tcp: move tcp_rack_advance() to tcp_input.c
2026-01-28 19:31:51 -08:00
tcp_scalable.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
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
net/ulp: use consistent error code when blocking ULP
2023-01-19 09:26:16 -08:00
tcp_vegas.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_vegas.h
…
tcp_veno.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_westwood.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_yeah.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp.c
net: remove addr_len argument of recvmsg() handlers
2026-03-02 18:17:17 -08:00
tunnel4.c
net: fill in MODULE_DESCRIPTION()s for ipv4 modules
2024-02-09 14:12:02 -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
…
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
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
net: fill in MODULE_DESCRIPTION()s for ipv4 modules
2024-02-09 14:12:02 -08:00