If new optional attribute OVS_USERSPACE_ATTR_ACTIONS is added to an OVS_ACTION_ATTR_USERSPACE action, then include the datapath actions in the upcall. This Directly associates the sampled packet with the path it takes through the virtual switch. Path information currently includes mangling, encapsulation and decapsulation actions for tunneling protocols GRE, VXLAN, Geneve, MPLS and QinQ, but this extension requires no further changes to accommodate datapath actions that may be added in the future. Adding path information enhances visibility into complex virtual networks.
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| @@ -153,6 +153,8 @@ enum ovs_packet_cmd { · 152 unmodified lines | ||
| 153 | 153 | * flow key against the kernel's. |
| 154 | 154 | * @OVS_PACKET_ATTR_ACTIONS: Contains actions for the packet. Used |
| 155 | 155 | * for %OVS_PACKET_CMD_EXECUTE. It has nested %OVS_ACTION_ATTR_* attributes. |
| 156 | + * Also used in upcall when %OVS_ACTION_ATTR_USERSPACE has optional | |
| 157 | + * %OVS_USERSPACE_ATTR_ACTIONS attribute. | |
| 156 | 158 | * @OVS_PACKET_ATTR_USERDATA: Present for an %OVS_PACKET_CMD_ACTION |
| 157 | 159 | * notification if the %OVS_ACTION_ATTR_USERSPACE action specified an |
| 158 | 160 | * %OVS_USERSPACE_ATTR_USERDATA attribute, with the same length and content |
| @@ -528,6 +530,7 @@ enum ovs_sample_attr { · 369 unmodified lines | ||
| 528 | 530 | * copied to the %OVS_PACKET_CMD_ACTION message as %OVS_PACKET_ATTR_USERDATA. |
| 529 | 531 | * @OVS_USERSPACE_ATTR_EGRESS_TUN_PORT: If present, u32 output port to get |
| 530 | 532 | * tunnel info. |
| 533 | + * @OVS_USERSPACE_ATTR_ACTIONS: If present, send actions with upcall. | |
| 531 | 534 | */ |
| 532 | 535 | enum ovs_userspace_attr { |
| 533 | 536 | OVS_USERSPACE_ATTR_UNSPEC, |
| @@ -535,6 +538,7 @@ enum ovs_userspace_attr { · 1 unmodified line | ||
| 535 | 538 | OVS_USERSPACE_ATTR_USERDATA, /* Optional user-specified cookie. */ |
| 536 | 539 | OVS_USERSPACE_ATTR_EGRESS_TUN_PORT, /* Optional, u32 output port |
| 537 | 540 | * to get tunnel info. */ |
| 541 | + OVS_USERSPACE_ATTR_ACTIONS, /* Optional flag to get actions. */ | |
| 538 | 542 | __OVS_USERSPACE_ATTR_MAX |
| 539 | 543 | }; |
| 540 | 544 | |