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ip_gre: Add support to collect tunnel metadata.

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Following patch create new tunnel flag which enable
tunnel metadata collection on given device.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pravin B Shelar
2015-08-07 23:51:42 -07:00
committed by David S. Miller
parent a9020fde67
commit 2e15ea390e
6 changed files with 216 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
include/net/ip_tunnels.h
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@@ -82,6 +82,8 @@ struct ip_tunnel_dst {
__be32 saddr;
};
struct metadata_dst;
struct ip_tunnel {
struct ip_tunnel __rcu *next;
struct hlist_node hash_node;
@@ -115,6 +117,7 @@ struct ip_tunnel {
unsigned int prl_count; /* # of entries in PRL */
int ip_tnl_net_id;
struct gro_cells gro_cells;
bool collect_md;
};
#define TUNNEL_CSUM __cpu_to_be16(0x01)
@@ -149,6 +152,7 @@ struct tnl_ptk_info {
struct ip_tunnel_net {
struct net_device *fb_tunnel_dev;
struct hlist_head tunnels[IP_TNL_HASH_SIZE];
struct ip_tunnel __rcu *collect_md_tun;
};
struct ip_tunnel_encap_ops {
@@ -235,7 +239,8 @@ struct ip_tunnel *ip_tunnel_lookup(struct ip_tunnel_net *itn,
__be32 key);
int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
const struct tnl_ptk_info *tpi, bool log_ecn_error);
const struct tnl_ptk_info *tpi, struct metadata_dst *tun_dst,
bool log_ecn_error);
int ip_tunnel_changelink(struct net_device *dev, struct nlattr *tb[],
struct ip_tunnel_parm *p);
int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[],