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Drivers: hv: vmbus: Drivers: hv: vmbus: Introduce CHANNELMSG_MODIFYCHANNEL_RESPONSE

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Introduce the CHANNELMSG_MODIFYCHANNEL_RESPONSE message type, and code
to receive and process such a message.

Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210416143449.16185-3-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Andrea Parri (Microsoft)
2021-04-16 16:34:48 +02:00
committed by Wei Liu
parent 1df53d212c
commit 870ced0548
5 changed files with 152 additions and 19 deletions
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11
include/linux/hyperv.h
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@@ -477,6 +477,7 @@ enum vmbus_channel_message_type {
CHANNELMSG_TL_CONNECT_REQUEST = 21,
CHANNELMSG_MODIFYCHANNEL = 22,
CHANNELMSG_TL_CONNECT_RESULT = 23,
CHANNELMSG_MODIFYCHANNEL_RESPONSE = 24,
CHANNELMSG_COUNT
};
@@ -590,6 +591,13 @@ struct vmbus_channel_open_result {
u32 status;
} __packed;
/* Modify Channel Result parameters */
struct vmbus_channel_modifychannel_response {
struct vmbus_channel_message_header header;
u32 child_relid;
u32 status;
} __packed;
/* Close channel parameters; */
struct vmbus_channel_close_channel {
struct vmbus_channel_message_header header;
@@ -722,6 +730,7 @@ struct vmbus_channel_msginfo {
struct vmbus_channel_gpadl_torndown gpadl_torndown;
struct vmbus_channel_gpadl_created gpadl_created;
struct vmbus_channel_version_response version_response;
struct vmbus_channel_modifychannel_response modify_response;
} response;
u32 msgsize;
@@ -1596,7 +1605,7 @@ extern __u32 vmbus_proto_version;
int vmbus_send_tl_connect_request(const guid_t *shv_guest_servie_id,
const guid_t *shv_host_servie_id);
int vmbus_send_modifychannel(u32 child_relid, u32 target_vp);
int vmbus_send_modifychannel(struct vmbus_channel *channel, u32 target_vp);
void vmbus_set_event(struct vmbus_channel *channel);
/* Get the start of the ring buffer. */