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datapath: Introduce is_mask when serializing netlink attributes.

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The intention is clearer than if we rederive it in every location.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
This commit is contained in:
Jesse Gross
2013-08-01 16:17:46 -07:00
parent 8ba2ee855d
commit a583e032a3
1 changed files with 5 additions and 4 deletions
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9
datapath/flow.c
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@@ -1696,6 +1696,7 @@ int ovs_flow_to_nlattrs(const struct sw_flow_key *swkey,
{
struct ovs_key_ethernet *eth_key;
struct nlattr *nla, *encap;
bool is_mask = (swkey != output);
if (nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, output->phy.priority))
goto nla_put_failure;
@@ -1705,12 +1706,12 @@ int ovs_flow_to_nlattrs(const struct sw_flow_key *swkey,
goto nla_put_failure;
if (swkey->phy.in_port == DP_MAX_PORTS) {
if ((swkey != output) && (output->phy.in_port == 0xffff))
if (is_mask && (output->phy.in_port == 0xffff))
if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, 0xffffffff))
goto nla_put_failure;
} else {
u16 upper_u16;
upper_u16 = (swkey == output) ? 0 : 0xffff;
upper_u16 = !is_mask ? 0 : 0xffff;
if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT,
(upper_u16 << 16) | output->phy.in_port))
@@ -1730,7 +1731,7 @@ int ovs_flow_to_nlattrs(const struct sw_flow_key *swkey,
if (swkey->eth.tci || swkey->eth.type == htons(ETH_P_8021Q)) {
__be16 eth_type;
eth_type = (swkey == output) ? htons(ETH_P_8021Q) : htons(0xffff) ;
eth_type = !is_mask ? htons(ETH_P_8021Q) : htons(0xffff);
if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE, eth_type) ||
nla_put_be16(skb, OVS_KEY_ATTR_VLAN, output->eth.tci))
goto nla_put_failure;
@@ -1747,7 +1748,7 @@ int ovs_flow_to_nlattrs(const struct sw_flow_key *swkey,
* 0xffff in the mask attribute. Ethertype can also
* be wildcarded.
*/
if (swkey != output && output->eth.type)
if (is_mask && output->eth.type)
if (nla_put_be16(skb, OVS_KEY_ATTR_ETHERTYPE,
output->eth.type))
goto nla_put_failure;