ovpn_udp4_output(9)

🌸 ovpn_udp4_output(9) 🌸

okay so bestie, welcome to the Kernel API Manual page for ovpn_udp4_output — literally the function that sends an IPv4 packet over a udp socket. yes that's the whole vibe. it's giving "one job, does it well" 💅

✨ NAME ✨

ovpn_udp4_output — send IPv4 packet over udp socket 🦋

✨ SYNOPSIS ✨

int ovpn_udp4_output (struct ovpn_peer *peer , struct ovpn_bind *bind ,
struct dst_cache *cache , struct sock *sk , struct sk_buff *skb , const
struct ovpn_route_key *key );

✨ ARGUMENTS ✨

okay so here's the cast of characters, and they ALL matter, no cap 👑

• peer — the destination peer 🫶 like, who we're sending this to
• bind — the binding related to the destination peer 🔗 (yes, the one tied to peer above, they're a package deal)
• cache — dst cache 🎀 the destination cache, keeping things snappy
• sk — the socket to send the packet over 🧚 this is the actual udp socket doing the yeeting
• skb — the packet to send 📦 the payload itself, the main character
• key — the route key snapshot used for cache validation and flow lookup 🔑 snapshot energy: it's used for cache validation and flow lookup, both. iykyk

✨ RETURN ✨

0 on success, or a negative error code otherwise 😭 so like... check it. zero is the slay outcome, anything negative is the 💀 outcome.

✨ SEE ALSO ✨

go look at the kernel file ./drivers/net/ovpn/udp.c and also these iconic siblings:

• ovpn_udp_encap_recv(9)
• ovpn_dst_cache_check_key(9)
• ovpn_dst_cache_current(9)
• ovpn_udp6_output(9)
• ovpn_udp_output(9)
• ovpn_udp_send_skb(9)
• ovpn_udp_socket_attach(9)
• ovpn_udp_socket_detach(9)

🌈 friendly reminder bestie: this page lives in ./drivers/net/ovpn, dated October 2026, and it's part of the Kernel API Manual. that's the whole footer, but make it cute 💖

go forth and send those packets, you absolute icon ⭐👑💜