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Message-Id: <1411005153-11041-2-git-send-email-simon.horman@netronome.com>
Date: Thu, 18 Sep 2014 10:52:26 +0900
From: Simon Horman <simon.horman@...ronome.com>
To: dev@...nvswtich.org, netdev@...r.kernel.org
Cc: Pravin Shelar <pshelar@...ira.com>, Jesse Gross <jesse@...ira.com>,
Thomas Graf <tgraf@...g.ch>,
Simon Horman <simon.horman@...ronome.com>
Subject: [PATCH/RFC 1/8] odp: select group action attributes
This is the core of a proposed ODP select group action.
It models OpenFlow select groups without any extensions.
Further work:
We believe there is scope to add OVS_SELECT_GROUP_ATTR_* attributes
to supply parameters to the selection method: for example which
selection algorithm to use. This relates to a proposed
Open Flow extension that we have made.
Signed-off-by: Simon Horman <simon.horman@...ronome.com>
---
datapath/linux/compat/include/linux/openvswitch.h | 31 +++++++++++++++++++++++
lib/dpif-netdev.c | 1 +
lib/dpif.c | 1 +
lib/odp-execute.c | 1 +
lib/odp-util.c | 2 ++
5 files changed, 36 insertions(+)
diff --git a/datapath/linux/compat/include/linux/openvswitch.h b/datapath/linux/compat/include/linux/openvswitch.h
index 6910dc4..91ff939 100644
--- a/datapath/linux/compat/include/linux/openvswitch.h
+++ b/datapath/linux/compat/include/linux/openvswitch.h
@@ -510,6 +510,35 @@ enum ovs_sample_attr {
#define OVS_SAMPLE_ATTR_MAX (__OVS_SAMPLE_ATTR_MAX - 1)
/**
+ * enum ovs_bucket_attr - Bucket for * %OVS_ACTION_ATTR_SELECT_GROUP action.
+ * @OVS_BUCKET_ATTR_WEIGHT. Relative weight of bucket.
+ * @OVS_BUCKET_ATTR_ACTIONS. Set of actions to execute.
+ */
+enum ovs_bucket_attr {
+ OVS_BUCKET_ATTR_UNSPEC,
+ OVS_BUCKET_ATTR_WEIGHT, /* u16. Relative weight of bucket. */
+ OVS_BUCKET_ATTR_ACTIONS, /* Nested OVS_BUCKET_ATTR_* attributes. */
+ __OVS_BUCKET_ATTR_MAX,
+};
+
+#define OVS_BUCKET_ATTR_MAX (__OVS_BUCKET_ATTR_MAX - 1)
+
+/**
+ * enum ovs_select_group_attr - Attributes for * %OVS_ACTION_ATTR_SELECT_GROUP action.
+ * @OVS_SELECT_GROUP_ATTR_BUCKET. A bucket whose actions will be executed
+ * if the bucket is selected. One ore more buckets may be present.
+ *
+ * Selects a bucket and executes its actions.
+ */
+enum ovs_select_group_attr {
+ OVS_SELECT_GROUP_ATTR_UNSPEC,
+ OVS_SELECT_GROUP_ATTR_BUCKET, /* Nested OVS_BUCKET_ATTR_* attributes. */
+ __OVS_SELECT_GROUP_ATTR_MAX,
+};
+
+#define OVS_SELECT_GROUP_ATTR_MAX (__OVS_SELECT_GROUP_ATTR_MAX - 1)
+
+/**
* enum ovs_userspace_attr - Attributes for %OVS_ACTION_ATTR_USERSPACE action.
* @OVS_USERSPACE_ATTR_PID: u32 Netlink PID to which the %OVS_PACKET_CMD_ACTION
* message should be sent. Required.
@@ -609,6 +638,7 @@ struct ovs_action_hash {
* indicate the new packet contents. This could potentially still be
* %ETH_P_MPLS if the resulting MPLS label stack is not empty. If there
* is no MPLS label stack, as determined by ethertype, no action is taken.
+ * @OVS_ACTION_ATTR_SELECT_GROUP: Select a bucket and execute its actions.
*
* Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all
* fields within a header are modifiable, e.g. the IPv4 protocol and fragment
@@ -631,6 +661,7 @@ enum ovs_action_attr {
* data immediately followed by a mask.
* The data must be zero for the unmasked
* bits. */
+ OVS_ACTION_ATTR_SELECT_GROUP, /* Nested OVS_SELECT_GROUP_*. */
__OVS_ACTION_ATTR_MAX
};
diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c
index 409c9bf..bfcfd8c 100644
--- a/lib/dpif-netdev.c
+++ b/lib/dpif-netdev.c
@@ -2560,6 +2560,7 @@ dp_execute_cb(void *aux_, struct dpif_packet **packets, int cnt,
case OVS_ACTION_ATTR_SET:
case OVS_ACTION_ATTR_SET_MASKED:
case OVS_ACTION_ATTR_SAMPLE:
+ case OVS_ACTION_ATTR_SELECT_GROUP:
case OVS_ACTION_ATTR_UNSPEC:
case __OVS_ACTION_ATTR_MAX:
OVS_NOT_REACHED();
diff --git a/lib/dpif.c b/lib/dpif.c
index bf2c5f9..90b561f 100644
--- a/lib/dpif.c
+++ b/lib/dpif.c
@@ -1043,6 +1043,7 @@ dpif_execute_helper_cb(void *aux_, struct dpif_packet **packets, int cnt,
case OVS_ACTION_ATTR_SET:
case OVS_ACTION_ATTR_SET_MASKED:
case OVS_ACTION_ATTR_SAMPLE:
+ case OVS_ACTION_ATTR_SELECT_GROUP:
case OVS_ACTION_ATTR_UNSPEC:
case __OVS_ACTION_ATTR_MAX:
OVS_NOT_REACHED();
diff --git a/lib/odp-execute.c b/lib/odp-execute.c
index e4bee18..c0ba868 100644
--- a/lib/odp-execute.c
+++ b/lib/odp-execute.c
@@ -518,6 +518,7 @@ odp_execute_actions__(void *dp, struct dpif_packet **packets, int cnt,
}
break;
+ case OVS_ACTION_ATTR_SELECT_GROUP:
case OVS_ACTION_ATTR_UNSPEC:
case __OVS_ACTION_ATTR_MAX:
OVS_NOT_REACHED();
diff --git a/lib/odp-util.c b/lib/odp-util.c
index d205473..77b456f 100644
--- a/lib/odp-util.c
+++ b/lib/odp-util.c
@@ -83,6 +83,7 @@ odp_action_len(uint16_t type)
case OVS_ACTION_ATTR_HASH: return sizeof(struct ovs_action_hash);
case OVS_ACTION_ATTR_SET: return -2;
case OVS_ACTION_ATTR_SET_MASKED: return -2;
+ case OVS_ACTION_ATTR_SELECT_GROUP: return -2;
case OVS_ACTION_ATTR_SAMPLE: return -2;
case OVS_ACTION_ATTR_UNSPEC:
@@ -581,6 +582,7 @@ format_odp_action(struct ds *ds, const struct nlattr *a)
case OVS_ACTION_ATTR_SAMPLE:
format_odp_sample_action(ds, a);
break;
+ case OVS_ACTION_ATTR_SELECT_GROUP:
case OVS_ACTION_ATTR_UNSPEC:
case __OVS_ACTION_ATTR_MAX:
default:
--
2.0.1
--
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