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openvswitch: Simplify interface ovs_flow_metadata_from_nlattrs() 

This is not functional change, this is just code cleanup.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Pravin B Shelar 2013-06-13 11:11:32 -07:00 committed by Jesse Gross
parent b34df5e805
commit 93d8fd1514
3 changed files with 13 additions and 18 deletions
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5
net/openvswitch/datapath.c
View File

@ -739,10 +739,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
if (err)
goto err_flow_free;
err = ovs_flow_metadata_from_nlattrs(&flow->key.phy.priority,
&flow->key.phy.skb_mark,
&flow->key.phy.in_port,
a[OVS_PACKET_ATTR_KEY]);
err = ovs_flow_metadata_from_nlattrs(flow, a[OVS_PACKET_ATTR_KEY]);
if (err)
goto err_flow_free;

22
net/openvswitch/flow.c
View File

@ -1125,10 +1125,8 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
/**
* ovs_flow_metadata_from_nlattrs - parses Netlink attributes into a flow key.
* @priority: receives the skb priority
* @mark: receives the skb mark
* @in_port: receives the extracted input port.
* @key: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute
* @flow: Receives extracted in_port, priority, tun_key and skb_mark.
* @attr: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute
* sequence.
*
* This parses a series of Netlink attributes that form a flow key, which must
@ -1136,15 +1134,15 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
* get the metadata, that is, the parts of the flow key that cannot be
* extracted from the packet itself.
*/
int ovs_flow_metadata_from_nlattrs(u32 *priority, u32 *mark, u16 *in_port,
const struct nlattr *attr)
int ovs_flow_metadata_from_nlattrs(struct sw_flow *flow,
const struct nlattr *attr)
{
const struct nlattr *nla;
int rem;
*in_port = DP_MAX_PORTS;
*priority = 0;
*mark = 0;
flow->key.phy.in_port = DP_MAX_PORTS;
flow->key.phy.priority = 0;
flow->key.phy.skb_mark = 0;
nla_for_each_nested(nla, attr, rem) {
int type = nla_type(nla);
@ -1155,17 +1153,17 @@ int ovs_flow_metadata_from_nlattrs(u32 *priority, u32 *mark, u16 *in_port,
switch (type) {
case OVS_KEY_ATTR_PRIORITY:
*priority = nla_get_u32(nla);
flow->key.phy.priority = nla_get_u32(nla);
break;
case OVS_KEY_ATTR_IN_PORT:
if (nla_get_u32(nla) >= DP_MAX_PORTS)
return -EINVAL;
*in_port = nla_get_u32(nla);
flow->key.phy.in_port = nla_get_u32(nla);
break;
case OVS_KEY_ATTR_SKB_MARK:
*mark = nla_get_u32(nla);
flow->key.phy.skb_mark = nla_get_u32(nla);
break;
}
}

4
net/openvswitch/flow.h
View File

@ -141,8 +141,8 @@ u64 ovs_flow_used_time(unsigned long flow_jiffies);
int ovs_flow_to_nlattrs(const struct sw_flow_key *, struct sk_buff *);
int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
const struct nlattr *);
int ovs_flow_metadata_from_nlattrs(u32 *priority, u32 *mark, u16 *in_port,
const struct nlattr *);
int ovs_flow_metadata_from_nlattrs(struct sw_flow *flow,
const struct nlattr *attr);
#define MAX_ACTIONS_BUFSIZE (16 * 1024)
#define TBL_MIN_BUCKETS 1024