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ofproto: Implement OpenFlow extension to allow control over async messages.

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Until now, the rules that cover the asynchronous messages that Open vSwitch
sends to a controller have been ad hoc.  The new NXT_SET_ASYNC_CONFIG
message provides systematic, precise control.

Feature #7086.
Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Ben Pfaff
2012-02-09 14:06:35 -08:00
parent bb638b9a18
commit 80d5aefd65
12 changed files with 430 additions and 94 deletions
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24
include/openflow/nicira-ext.h
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@@ -114,6 +114,8 @@ enum nicira_type {
* If so, the switch does not reply to this message (which consists only of
* a "struct nicira_header"). If not, the switch sends an error reply. */
NXT_FLOW_AGE = 18,
NXT_SET_ASYNC_CONFIG = 19, /* struct nx_async_config. */
};
/* Header for Nicira vendor stats request and reply messages. */
@@ -288,6 +290,28 @@ enum nx_role {
NX_ROLE_MASTER, /* Full access, at most one. */
NX_ROLE_SLAVE /* Read-only access. */
};
/* NXT_SET_ASYNC_CONFIG.
*
* Sent by a controller, this message configures the asynchronous messages that
* the controller wants to receive. Element 0 in each array specifies messages
* of interest when the controller has an "other" or "master" role; element 1,
* when the controller has a "slave" role.
*
* Each array element is a bitmask in which a 0-bit disables receiving a
* particular message and a 1-bit enables receiving it. Each bit controls the
* message whose 'reason' corresponds to the bit index. For example, the bit
* with value 1<<2 == 4 in port_status_mask[1] determines whether the
* controller will receive OFPT_PORT_STATUS messages with reason OFPPR_MODIFY
* (value 2) when the controller has a "slave" role.
*/
struct nx_async_config {
struct nicira_header nxh;
ovs_be32 packet_in_mask[2]; /* Bitmasks of OFPR_* values. */
ovs_be32 port_status_mask[2]; /* Bitmasks of OFPRR_* values. */
ovs_be32 flow_removed_mask[2]; /* Bitmasks of OFPPR_* values. */
};
OFP_ASSERT(sizeof(struct nx_async_config) == 40);
/* Nicira vendor flow actions. */