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openvswitch: Fix ovs_flow_stats_get/clear RCU dereference.

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For ovs_flow_stats_get() using ovsl_dereference() was wrong, since
flow dumps call this with RCU read lock.

ovs_flow_stats_clear() is always called with ovs_mutex, so can use
ovsl_dereference().

Also, make the ovs_flow_stats_get() 'flow' argument const to make
later patches cleaner.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
This commit is contained in:
Jarno Rajahalme 2014-05-05 14:17:28 -07:00 • committed by Pravin B Shelar
parent eb07265904
commit 86ec8dbae2
2 changed files with 9 additions and 7 deletions
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6
net/openvswitch/flow.h
View file

@ -180,10 +180,10 @@ struct arp_eth_header {
unsigned char ar_tip[4]; /* target IP address */
} __packed;
void ovs_flow_stats_update(struct sw_flow *flow, struct sk_buff *skb);
void ovs_flow_stats_get(struct sw_flow *flow, struct ovs_flow_stats *stats,
void ovs_flow_stats_update(struct sw_flow *, 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 *flow);
void ovs_flow_stats_clear(struct sw_flow *);
u64 ovs_flow_used_time(unsigned long flow_jiffies);
int ovs_flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *);