From 2384127e98db52a6ac2577924ad9cae25f3e7472 Mon Sep 17 00:00:00 2001 From: Davide Caratti Date: Wed, 29 Mar 2023 11:54:52 +0200 Subject: [PATCH] net/sched: act_tunnel_key: add support for "don't fragment" extend "act_tunnel_key" to allow specifying TUNNEL_DONT_FRAGMENT. Suggested-by: Ilya Maximets Reviewed-by: Pedro Tammela Acked-by: Jamal Hadi Salim Signed-off-by: Davide Caratti Signed-off-by: Jakub Kicinski --- include/uapi/linux/tc_act/tc_tunnel_key.h | 1 + net/sched/act_tunnel_key.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/include/uapi/linux/tc_act/tc_tunnel_key.h b/include/uapi/linux/tc_act/tc_tunnel_key.h index 49ad4033951bf..37c6f612f1617 100644 --- a/include/uapi/linux/tc_act/tc_tunnel_key.h +++ b/include/uapi/linux/tc_act/tc_tunnel_key.h @@ -34,6 +34,7 @@ enum { */ TCA_TUNNEL_KEY_ENC_TOS, /* u8 */ TCA_TUNNEL_KEY_ENC_TTL, /* u8 */ + TCA_TUNNEL_KEY_NO_FRAG, /* flag */ __TCA_TUNNEL_KEY_MAX, }; diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c index 2d12d26264153..0c8aa7e686eab 100644 --- a/net/sched/act_tunnel_key.c +++ b/net/sched/act_tunnel_key.c @@ -420,6 +420,9 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla, nla_get_u8(tb[TCA_TUNNEL_KEY_NO_CSUM])) flags &= ~TUNNEL_CSUM; + if (nla_get_flag(tb[TCA_TUNNEL_KEY_NO_FRAG])) + flags |= TUNNEL_DONT_FRAGMENT; + if (tb[TCA_TUNNEL_KEY_ENC_DST_PORT]) dst_port = nla_get_be16(tb[TCA_TUNNEL_KEY_ENC_DST_PORT]); @@ -747,6 +750,8 @@ static int tunnel_key_dump(struct sk_buff *skb, struct tc_action *a, key->tp_dst)) || nla_put_u8(skb, TCA_TUNNEL_KEY_NO_CSUM, !(key->tun_flags & TUNNEL_CSUM)) || + ((key->tun_flags & TUNNEL_DONT_FRAGMENT) && + nla_put_flag(skb, TCA_TUNNEL_KEY_NO_FRAG)) || tunnel_key_opts_dump(skb, info)) goto nla_put_failure; -- 2.30.2