diff options
| author | Roopa Prabhu <roopa@cumulusnetworks.com> | 2017-02-07 16:12:00 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-08 14:39:19 -0500 |
| commit | 8ef9594764617e3fd4500205b080b53c45c14c4b (patch) | |
| tree | 23f2e375007afbce4b90ea32b98b3903c5fca0bb /net | |
| parent | 97e219b7c1f75b14b29abe28ad53e8709e8d15e5 (diff) | |
| download | linux-8ef9594764617e3fd4500205b080b53c45c14c4b.tar.gz linux-8ef9594764617e3fd4500205b080b53c45c14c4b.tar.bz2 linux-8ef9594764617e3fd4500205b080b53c45c14c4b.zip | |
bridge: vlan tunnel id info range fill size calc cleanups
This fixes a bug and cleans up tunnelid range size
calculation code by using consistent variable names
and checks in size calculation and fill functions.
tested for a few cases of vlan-vni range mappings:
(output from patched iproute2):
$bridge vlan showtunnel
port vid tunid
vxlan0 100-105 1000-1005
200 2000
210 2100
211-213 2100-2102
214 2104
216-217 2108-2109
219 2119
Fixes: efa5356b0d97 ("bridge: per vlan dst_metadata netlink support")
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bridge/br_netlink_tunnel.c | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/net/bridge/br_netlink_tunnel.c b/net/bridge/br_netlink_tunnel.c index f38473509647..c913491495ab 100644 --- a/net/bridge/br_netlink_tunnel.c +++ b/net/bridge/br_netlink_tunnel.c @@ -30,18 +30,18 @@ static size_t __get_vlan_tinfo_size(void) nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_VLAN_TUNNEL_FLAGS */ } -static bool vlan_tunnel_id_isrange(struct net_bridge_vlan *v, - struct net_bridge_vlan *v_end) +static bool vlan_tunid_inrange(struct net_bridge_vlan *v_curr, + struct net_bridge_vlan *v_last) { - __be32 tunid_curr = tunnel_id_to_key32(v->tinfo.tunnel_id); - __be32 tunid_end = tunnel_id_to_key32(v_end->tinfo.tunnel_id); + __be32 tunid_curr = tunnel_id_to_key32(v_curr->tinfo.tunnel_id); + __be32 tunid_last = tunnel_id_to_key32(v_last->tinfo.tunnel_id); - return (be32_to_cpu(tunid_curr) - be32_to_cpu(tunid_end)) == 1; + return (be32_to_cpu(tunid_curr) - be32_to_cpu(tunid_last)) == 1; } static int __get_num_vlan_tunnel_infos(struct net_bridge_vlan_group *vg) { - struct net_bridge_vlan *v, *v_start = NULL, *v_end = NULL; + struct net_bridge_vlan *v, *vtbegin = NULL, *vtend = NULL; int num_tinfos = 0; /* Count number of vlan infos */ @@ -50,27 +50,25 @@ static int __get_num_vlan_tunnel_infos(struct net_bridge_vlan_group *vg) if (!br_vlan_should_use(v) || !v->tinfo.tunnel_id) continue; - if (!v_start) { + if (!vtbegin) { goto initvars; - } else if ((v->vid - v_end->vid) == 1 && - vlan_tunnel_id_isrange(v_end, v) == 1) { - v_end = v; + } else if ((v->vid - vtend->vid) == 1 && + vlan_tunid_inrange(v, vtend)) { + vtend = v; continue; } else { - if ((v_end->vid - v->vid) > 0 && - vlan_tunnel_id_isrange(v_end, v) > 0) + if ((vtend->vid - vtbegin->vid) > 0) num_tinfos += 2; else num_tinfos += 1; } initvars: - v_start = v; - v_end = v; + vtbegin = v; + vtend = v; } - if (v_start) { - if ((v_end->vid - v->vid) > 0 && - vlan_tunnel_id_isrange(v_end, v) > 0) + if (vtbegin && vtend) { + if ((vtend->vid - vtbegin->vid) > 0) num_tinfos += 2; else num_tinfos += 1; @@ -171,7 +169,7 @@ int br_fill_vlan_tunnel_info(struct sk_buff *skb, if (!vtbegin) { goto initvars; } else if ((v->vid - vtend->vid) == 1 && - vlan_tunnel_id_isrange(v, vtend)) { + vlan_tunid_inrange(v, vtend)) { vtend = v; continue; } else { |