From 9e47df005cab63e545671dba8dfd6852fff1c2cf Mon Sep 17 00:00:00 2001 From: Xin Long Date: Tue, 22 Jun 2021 14:05:00 -0400 Subject: sctp: process sctp over udp icmp err on sctp side Previously, sctp over udp was using udp tunnel's icmp err process, which only does sk lookup on sctp side. However for sctp's icmp error process, there are more things to do, like syncing assoc pmtu/retransmit packets for toobig type err, and starting proto_unreach_timer for unreach type err etc. Now after adding PLPMTUD, which also requires to process toobig type err on sctp side. This patch is to process icmp err on sctp side by parsing the type/code/info in .encap_err_lookup and call sctp's icmp processing functions. Note as the 'redirect' err process needs to know the outer ip(v6) header's, we have to leave it to udp(v6)_err to handle it. Signed-off-by: Xin Long Acked-by: Marcelo Ricardo Leitner Signed-off-by: David S. Miller --- include/net/sctp/sctp.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/net/sctp') diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h index f7e083602c10..69bab88ad66b 100644 --- a/include/net/sctp/sctp.h +++ b/include/net/sctp/sctp.h @@ -145,6 +145,8 @@ struct sock *sctp_err_lookup(struct net *net, int family, struct sk_buff *, struct sctphdr *, struct sctp_association **, struct sctp_transport **); void sctp_err_finish(struct sock *, struct sctp_transport *); +int sctp_udp_v4_err(struct sock *sk, struct sk_buff *skb); +int sctp_udp_v6_err(struct sock *sk, struct sk_buff *skb); void sctp_icmp_frag_needed(struct sock *, struct sctp_association *, struct sctp_transport *t, __u32 pmtu); void sctp_icmp_redirect(struct sock *, struct sctp_transport *, -- cgit v1.2.3