[PATCH net-next 05/14] net: ipv6: Make udp_tunnel6_xmit_skb() void
From: Petr Machata <petrm@nvidia.com>
Date: 2025-06-09 20:52:16
Subsystem:
networking [general], networking [ipv4/ipv6], sctp protocol, the rest, tipc network layer · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Marcelo Ricardo Leitner, Xin Long, Linus Torvalds, Jon Maloy
The function always returns zero, thus the return value does not carry any signal. Just make it void. Most callers already ignore the return value. However: - Refold arguments of the call from sctp_v6_xmit() so that they fit into the 80-column limit. - tipc_udp_xmit() initializes err from the return value, but that should already be always zero at that point. So there's no practical change, but elision of the assignment prompts a couple more tweaks to clean up the function. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> --- Notes: CC:Marcelo Ricardo Leitner [off-list ref] CC:linux-sctp@vger.kernel.org CC:Jon Maloy [off-list ref] CC:tipc-discussion@lists.sourceforge.net include/net/udp_tunnel.h | 14 +++++++------- net/ipv6/ip6_udp_tunnel.c | 15 +++++++-------- net/sctp/ipv6.c | 7 ++++--- net/tipc/udp_media.c | 10 +++++----- 4 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h
index 28102c8fd8a8..0b01f6ade20d 100644
--- a/include/net/udp_tunnel.h
+++ b/include/net/udp_tunnel.h@@ -152,13 +152,13 @@ void udp_tunnel_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb __be16 df, __be16 src_port, __be16 dst_port, bool xnet, bool nocheck, u16 ipcb_flags); -int udp_tunnel6_xmit_skb(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, - struct net_device *dev, - const struct in6_addr *saddr, - const struct in6_addr *daddr, - __u8 prio, __u8 ttl, __be32 label, - __be16 src_port, __be16 dst_port, bool nocheck); +void udp_tunnel6_xmit_skb(struct dst_entry *dst, struct sock *sk, + struct sk_buff *skb, + struct net_device *dev, + const struct in6_addr *saddr, + const struct in6_addr *daddr, + __u8 prio, __u8 ttl, __be32 label, + __be16 src_port, __be16 dst_port, bool nocheck); void udp_tunnel_sock_release(struct socket *sock);
diff --git a/net/ipv6/ip6_udp_tunnel.c b/net/ipv6/ip6_udp_tunnel.c
index c99053189ea8..21681718b7bb 100644
--- a/net/ipv6/ip6_udp_tunnel.c
+++ b/net/ipv6/ip6_udp_tunnel.c@@ -74,13 +74,13 @@ int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg, } EXPORT_SYMBOL_GPL(udp_sock_create6); -int udp_tunnel6_xmit_skb(struct dst_entry *dst, struct sock *sk, - struct sk_buff *skb, - struct net_device *dev, - const struct in6_addr *saddr, - const struct in6_addr *daddr, - __u8 prio, __u8 ttl, __be32 label, - __be16 src_port, __be16 dst_port, bool nocheck) +void udp_tunnel6_xmit_skb(struct dst_entry *dst, struct sock *sk, + struct sk_buff *skb, + struct net_device *dev, + const struct in6_addr *saddr, + const struct in6_addr *daddr, + __u8 prio, __u8 ttl, __be32 label, + __be16 src_port, __be16 dst_port, bool nocheck) { struct udphdr *uh; struct ipv6hdr *ip6h;
@@ -109,7 +109,6 @@ int udp_tunnel6_xmit_skb(struct dst_entry *dst, struct sock *sk, ip6h->saddr = *saddr; ip6tunnel_xmit(sk, skb, dev); - return 0; } EXPORT_SYMBOL_GPL(udp_tunnel6_xmit_skb);
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index a9ed2ccab1bd..d1ecf7454827 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c@@ -261,9 +261,10 @@ static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *t) skb_set_inner_ipproto(skb, IPPROTO_SCTP); label = ip6_make_flowlabel(sock_net(sk), skb, fl6->flowlabel, true, fl6); - return udp_tunnel6_xmit_skb(dst, sk, skb, NULL, &fl6->saddr, - &fl6->daddr, tclass, ip6_dst_hoplimit(dst), - label, sctp_sk(sk)->udp_port, t->encap_port, false); + udp_tunnel6_xmit_skb(dst, sk, skb, NULL, &fl6->saddr, &fl6->daddr, + tclass, ip6_dst_hoplimit(dst), label, + sctp_sk(sk)->udp_port, t->encap_port, false); + return 0; } /* Returns the dst cache entry for the given source and destination ip
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index 87e8c1e6d550..414713fcd8c5 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c@@ -172,7 +172,7 @@ static int tipc_udp_xmit(struct net *net, struct sk_buff *skb, struct udp_media_addr *dst, struct dst_cache *cache) { struct dst_entry *ndst; - int ttl, err = 0; + int ttl, err; local_bh_disable(); ndst = dst_cache_get(cache);
@@ -217,13 +217,13 @@ static int tipc_udp_xmit(struct net *net, struct sk_buff *skb, dst_cache_set_ip6(cache, ndst, &fl6.saddr); } ttl = ip6_dst_hoplimit(ndst); - err = udp_tunnel6_xmit_skb(ndst, ub->ubsock->sk, skb, NULL, - &src->ipv6, &dst->ipv6, 0, ttl, 0, - src->port, dst->port, false); + udp_tunnel6_xmit_skb(ndst, ub->ubsock->sk, skb, NULL, + &src->ipv6, &dst->ipv6, 0, ttl, 0, + src->port, dst->port, false); #endif } local_bh_enable(); - return err; + return 0; tx_error: local_bh_enable();
--
2.49.0