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| author |   Xin Long <lucien.xin@gmail.com> | 2020-09-13 19:51:50 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-09-14 16:49:39 -0700 |
| commit | 13e6ce98aa65ab5ce19351c020419360dfe8af29 (patch) | |
| tree | 85f3cd4dd493f7ed32eceefe7b5c9755a81f8b70 /net/sched/act_tunnel_key.c | |
| parent | tipc: use skb_unshare() instead in tipc_buf_append() (diff) | |
| download | linux-dev-13e6ce98aa65ab5ce19351c020419360dfe8af29.tar.xz linux-dev-13e6ce98aa65ab5ce19351c020419360dfe8af29.zip | |
net: sched: only keep the available bits when setting vxlan md->gbp
As we can see from vxlan_build/parse_gbp_hdr(), when processing metadata
on vxlan rx/tx path, only dont_learn/policy_applied/policy_id fields can
be set to or parse from the packet for vxlan gbp option.
So we'd better do the mask when set it in act_tunnel_key and cls_flower.
Otherwise, when users don't know these bits, they may configure with a
value which can never be matched.
Reported-by: Shuang Li <shuali@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_tunnel_key.c')
| -rw-r--r-- | net/sched/act_tunnel_key.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c index 536c4bc31be6..37f1e10f35e0 100644 --- a/net/sched/act_tunnel_key.c +++ b/net/sched/act_tunnel_key.c @@ -156,6 +156,7 @@ tunnel_key_copy_vxlan_opt(const struct nlattr *nla, void *dst, int dst_len, struct vxlan_metadata *md = dst; md->gbp = nla_get_u32(tb[TCA_TUNNEL_KEY_ENC_OPT_VXLAN_GBP]); + md->gbp &= VXLAN_GBP_MASK; } return sizeof(struct vxlan_metadata); |