[PATCH net 2/3] geneve: fix populating tclass in geneve_get_v6_dst
From: Daniel Borkmann <daniel@iogearbox.net>
Date: 2016-03-18 17:38:18
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The struct flowi6's flowi6_tos is not used in IPv6 route lookup, the
traffic class information is handled in the flowi6's flowlabel member
instead. For example, for policy routing, fib6_rule_match() uses
ip6_tclass() that is applied on the flowlabel for matching on tclass,
which would currently not work as expected.
Fixes: 3a56f86f1be6 ("geneve: handle ipv6 priority like ipv4 tos")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
---
drivers/net/geneve.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 192631a..bc16889 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c@@ -843,8 +843,8 @@ static struct dst_entry *geneve_get_v6_dst(struct sk_buff *skb, if (info) { fl6->daddr = info->key.u.ipv6.dst; fl6->saddr = info->key.u.ipv6.src; - fl6->flowi6_tos = RT_TOS(info->key.tos); - fl6->flowlabel = info->key.label; + fl6->flowlabel = ip6_make_flowinfo(RT_TOS(info->key.tos), + info->key.label); dst_cache = &info->dst_cache; } else { prio = geneve->tos;
@@ -855,8 +855,8 @@ static struct dst_entry *geneve_get_v6_dst(struct sk_buff *skb, use_cache = false; } - fl6->flowi6_tos = RT_TOS(prio); - fl6->flowlabel = geneve->label; + fl6->flowlabel = ip6_make_flowinfo(RT_TOS(prio), + geneve->label); fl6->daddr = geneve->remote.sin6.sin6_addr; dst_cache = &geneve->dst_cache; }
@@ -1049,7 +1049,8 @@ static netdev_tx_t geneve6_xmit_skb(struct sk_buff *skb, struct net_device *dev, if (unlikely(err)) goto err; - prio = ip_tunnel_ecn_encap(fl6.flowi6_tos, iip, skb); + prio = ip_tunnel_ecn_encap(ip6_tclass(fl6.flowlabel), + iip, skb); ttl = geneve->ttl; if (!ttl && ipv6_addr_is_multicast(&fl6.daddr)) ttl = 1;
--
1.9.3