[PATCH v1 net-next 03/15] ipv6: Remove UDP-Lite support for IPV6_ADDRFORM.
From: Kuniyuki Iwashima <kuniyu@google.com>
Date: 2026-03-04 19:30:43
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
We cannot create IPv6 UDP-Lite sockets anymore. Let's remove dead code in IPV6_ADDRFORM. Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> --- net/ipv6/ipv6_sockglue.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-)
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 02c4cab60c69..b4c977434c2e 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c@@ -45,7 +45,6 @@ #include <net/inet_common.h> #include <net/tcp.h> #include <net/udp.h> -#include <net/udplite.h> #include <net/xfrm.h> #include <net/compat.h> #include <net/seg6.h>
@@ -563,10 +562,8 @@ int do_ipv6_setsockopt(struct sock *sk, int level, int optname, if (sk->sk_type == SOCK_RAW) break; - if (sk->sk_protocol == IPPROTO_UDP || - sk->sk_protocol == IPPROTO_UDPLITE) { - struct udp_sock *up = udp_sk(sk); - if (up->pending == AF_INET6) { + if (sk->sk_protocol == IPPROTO_UDP) { + if (udp_sk(sk)->pending == AF_INET6) { retv = -EBUSY; break; }
@@ -607,16 +604,11 @@ int do_ipv6_setsockopt(struct sock *sk, int level, int optname, WRITE_ONCE(sk->sk_family, PF_INET); tcp_sync_mss(sk, icsk->icsk_pmtu_cookie); } else { - struct proto *prot = &udp_prot; - - if (sk->sk_protocol == IPPROTO_UDPLITE) - prot = &udplite_prot; - sock_prot_inuse_add(net, sk->sk_prot, -1); - sock_prot_inuse_add(net, prot, 1); + sock_prot_inuse_add(net, &udp_prot, 1); /* Paired with READ_ONCE(sk->sk_prot) in inet6_dgram_ops */ - WRITE_ONCE(sk->sk_prot, prot); + WRITE_ONCE(sk->sk_prot, &udp_prot); WRITE_ONCE(sk->sk_socket->ops, &inet_dgram_ops); WRITE_ONCE(sk->sk_family, PF_INET); }
@@ -1098,7 +1090,6 @@ int do_ipv6_getsockopt(struct sock *sk, int level, int optname, switch (optname) { case IPV6_ADDRFORM: if (sk->sk_protocol != IPPROTO_UDP && - sk->sk_protocol != IPPROTO_UDPLITE && sk->sk_protocol != IPPROTO_TCP) return -ENOPROTOOPT; if (sk->sk_state != TCP_ESTABLISHED)
--
2.53.0.473.g4a7958ca14-goog