From 60a77d11cd5d6501562ff4a297491f65a43c07db Mon Sep 17 00:00:00 2001 From: Beniamino Galvani Date: Mon, 16 Oct 2023 09:15:24 +0200 Subject: geneve: add dsfield helper function Add a helper function to compute the tos/dsfield. In this way, we can factor out some duplicate code. Also, the helper will be called from more places in the next commit. Suggested-by: Guillaume Nault Signed-off-by: Beniamino Galvani Signed-off-by: David S. Miller --- drivers/net/geneve.c | 29 ++++++++++++++++++----------- 1 file changed, 18 insertions(+), 11 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 78f9d588f712..572c3e36b209 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -784,6 +784,22 @@ free_dst: return err; } +static u8 geneve_get_dsfield(struct sk_buff *skb, struct net_device *dev, + const struct ip_tunnel_info *info, + bool *use_cache) +{ + struct geneve_dev *geneve = netdev_priv(dev); + u8 dsfield; + + dsfield = info->key.tos; + if (dsfield == 1 && !geneve->cfg.collect_md) { + dsfield = ip_tunnel_get_dsfield(ip_hdr(skb), skb); + *use_cache = false; + } + + return dsfield; +} + static struct rtable *geneve_get_v4_rt(struct sk_buff *skb, struct net_device *dev, struct geneve_sock *gs4, @@ -810,11 +826,7 @@ static struct rtable *geneve_get_v4_rt(struct sk_buff *skb, fl4->fl4_sport = sport; fl4->flowi4_flags = info->key.flow_flags; - tos = info->key.tos; - if ((tos == 1) && !geneve->cfg.collect_md) { - tos = ip_tunnel_get_dsfield(ip_hdr(skb), skb); - use_cache = false; - } + tos = geneve_get_dsfield(skb, dev, info, &use_cache); fl4->flowi4_tos = RT_TOS(tos); if (full_tos) *full_tos = tos; @@ -865,12 +877,7 @@ static struct dst_entry *geneve_get_v6_dst(struct sk_buff *skb, fl6->fl6_dport = dport; fl6->fl6_sport = sport; - prio = info->key.tos; - if ((prio == 1) && !geneve->cfg.collect_md) { - prio = ip_tunnel_get_dsfield(ip_hdr(skb), skb); - use_cache = false; - } - + prio = geneve_get_dsfield(skb, dev, info, &use_cache); fl6->flowlabel = ip6_make_flowinfo(prio, info->key.label); dst_cache = (struct dst_cache *)&info->dst_cache; if (use_cache) { -- cgit v1.2.3-70-g09d2