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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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7
lib/odp-util.h
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@@ -66,6 +66,7 @@ void format_odp_actions(struct ds *, const struct nlattr *odp_actions,
*
* struct pad nl hdr total
* ------ --- ------ -----
* OVS_KEY_ATTR_PRIORITY 4 -- 4 8
* OVS_KEY_ATTR_TUN_ID 8 -- 4 12
* OVS_KEY_ATTR_IN_PORT 4 -- 4 8
* OVS_KEY_ATTR_ETHERNET 12 -- 4 16
@@ -75,14 +76,14 @@ void format_odp_actions(struct ds *, const struct nlattr *odp_actions,
* OVS_KEY_ATTR_ICMPV6 2 2 4 8
* OVS_KEY_ATTR_ND 28 -- 4 32
* -------------------------------------------------
* total 132
* total 140
*/
#define ODPUTIL_FLOW_KEY_BYTES 132
#define ODPUTIL_FLOW_KEY_BYTES 140
/* This is an imperfect sanity-check that ODPUTIL_FLOW_KEY_BYTES doesn't
* need to be updated, but will at least raise awareness when new OVS
* datapath key types are added. */
BUILD_ASSERT_DECL(__OVS_KEY_ATTR_MAX == 14);
BUILD_ASSERT_DECL(__OVS_KEY_ATTR_MAX == 15);
/* A buffer with sufficient size and alignment to hold an nlattr-formatted flow
* key. An array of "struct nlattr" might not, in theory, be sufficiently