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datapath: Convert kernel priority actions into match/set.

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Following patch adds skb-priority to flow key. So userspace will know
what was priority when packet arrived and we can remove the pop/reset
priority action. It's no longer necessary to have a special action for
pop that is based on the kernel remembering original skb->priority.
Userspace can just emit a set priority action with the original value.

Since the priority field is a match field with just a normal set action,
we can convert it into the new model for actions that are based on
matches.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>

Bug #7715
This commit is contained in:
Pravin B Shelar
2011-11-01 10:13:16 -07:00
parent 7f4ae491b0
commit abff858b5a
22 changed files with 159 additions and 114 deletions
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6
include/linux/openvswitch.h
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@@ -263,6 +263,7 @@ struct ovs_flow_stats {
enum ovs_key_attr {
OVS_KEY_ATTR_UNSPEC,
OVS_KEY_ATTR_PRIORITY, /* 32-bit skb->priority */
OVS_KEY_ATTR_TUN_ID, /* 64-bit tunnel ID */
OVS_KEY_ATTR_IN_PORT, /* 32-bit OVS dp port number */
OVS_KEY_ATTR_ETHERNET, /* struct ovs_key_ethernet */
@@ -449,9 +450,6 @@ enum ovs_userspace_attr {
* header.
* @OVS_ACTION_ATTR_SET: Replaces the contents of an existing header.
* The argument takes the same form as %OVS_ACTION_ATTR_PUSH.
* @OVS_ACTION_ATTR_SET_PRIORITY: Sets skb->priority to 32-bit number passed
* as argument.
* @OVS_ACTION_ATTR_POP_PRIORITY: Restore skb->priority to original value.
* @OVS_ACTION_ATTR_SAMPLE: Probabilitically executes actions, as specified in
* the nested %OVS_SAMPLE_ATTR_* attributes.
*
@@ -466,8 +464,6 @@ enum ovs_action_attr {
OVS_ACTION_ATTR_PUSH, /* One nested OVS_KEY_ATTR_*. */
OVS_ACTION_ATTR_POP, /* u16 OVS_KEY_ATTR_*. */
OVS_ACTION_ATTR_SET, /* One nested OVS_KEY_ATTR_*. */
OVS_ACTION_ATTR_SET_PRIORITY, /* u32 skb->priority value. */
OVS_ACTION_ATTR_POP_PRIORITY, /* No argument. */
OVS_ACTION_ATTR_SAMPLE, /* Nested OVS_SAMPLE_ATTR_*. */
__OVS_ACTION_ATTR_MAX
};