openvswitch: Constify various function arguments

Help produce better optimized code.

Signed-off-by: Thomas Graf <tgraf@noironetworks.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h
index 543b358ee57f..9e0a787c8627 100644
--- a/net/openvswitch/flow.h
+++ b/net/openvswitch/flow.h
@@ -53,7 +53,7 @@ struct ovs_key_ipv4_tunnel {
 
 struct ovs_tunnel_info {
         struct ovs_key_ipv4_tunnel tunnel;
-        struct geneve_opt *options;
+        const struct geneve_opt *options;
         u8 options_len;
 };
 
@@ -73,7 +73,7 @@ static inline void __ovs_flow_tun_info_init(struct ovs_tunnel_info *tun_info,
                                             __be16 tp_dst,
                                             __be64 tun_id,
                                             __be16 tun_flags,
-                                            struct geneve_opt *opts,
+                                            const struct geneve_opt *opts,
                                             u8 opts_len)
 {
         tun_info->tunnel.tun_id = tun_id;
@@ -105,7 +105,7 @@ static inline void ovs_flow_tun_info_init(struct ovs_tunnel_info *tun_info,
                                           __be16 tp_dst,
                                           __be64 tun_id,
                                           __be16 tun_flags,
-                                          struct geneve_opt *opts,
+                                          const struct geneve_opt *opts,
                                           u8 opts_len)
 {
         __ovs_flow_tun_info_init(tun_info, iph->saddr, iph->daddr,
@@ -244,14 +244,15 @@ struct arp_eth_header {
 } __packed;
 
 void ovs_flow_stats_update(struct sw_flow *, __be16 tcp_flags,
-                           struct sk_buff *);
+                           const struct sk_buff *);
 void ovs_flow_stats_get(const struct sw_flow *, struct ovs_flow_stats *,
                         unsigned long *used, __be16 *tcp_flags);
 void ovs_flow_stats_clear(struct sw_flow *);
 u64 ovs_flow_used_time(unsigned long flow_jiffies);
 
 int ovs_flow_key_update(struct sk_buff *skb, struct sw_flow_key *key);
-int ovs_flow_key_extract(struct ovs_tunnel_info *tun_info, struct sk_buff *skb,
+int ovs_flow_key_extract(const struct ovs_tunnel_info *tun_info,
+                         struct sk_buff *skb,
                          struct sw_flow_key *key);
 /* Extract key from packet coming from userspace. */
 int ovs_flow_key_extract_userspace(const struct nlattr *attr,