diff options
| -rw-r--r-- | drivers/hv/channel_mgmt.c | 54 | ||||
| -rw-r--r-- | drivers/hv/hv_kvp.c | 3 | ||||
| -rw-r--r-- | drivers/hv/hv_util.c | 9 | ||||
| -rw-r--r-- | include/linux/hyperv.h | 4 |
4 files changed, 49 insertions, 21 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 6c8c4d340930..2b8b8d4558d2 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -46,37 +46,59 @@ struct vmbus_channel_message_table_entry { * * @icmsghdrp is of type &struct icmsg_hdr. * @negop is of type &struct icmsg_negotiate. - * Set up and fill in default negotiate response message. This response can - * come from both the vmbus driver and the hv_utils driver. The current api - * will respond properly to both Windows 2008 and Windows 2008-R2 operating - * systems. + * Set up and fill in default negotiate response message. + * + * The max_fw_version specifies the maximum framework version that + * we can support and max _srv_version specifies the maximum service + * version we can support. A special value MAX_SRV_VER can be + * specified to indicate that we can handle the maximum version + * exposed by the host. * * Mainly used by Hyper-V drivers. */ void vmbus_prep_negotiate_resp(struct icmsg_hdr *icmsghdrp, - struct icmsg_negotiate *negop, u8 *buf) + struct icmsg_negotiate *negop, u8 *buf, + int max_fw_version, int max_srv_version) { + int icframe_vercnt; + int icmsg_vercnt; + int i; + icmsghdrp->icmsgsize = 0x10; negop = (struct icmsg_negotiate *)&buf[ sizeof(struct vmbuspipe_hdr) + sizeof(struct icmsg_hdr)]; - if (negop->icframe_vercnt == 2 && - negop->icversion_data[1].major == 3) { - negop->icversion_data[0].major = 3; - negop->icversion_data[0].minor = 0; - negop->icversion_data[1].major = 3; - negop->icversion_data[1].minor = 0; - } else { - negop->icversion_data[0].major = 1; - negop->icversion_data[0].minor = 0; - negop->icversion_data[1].major = 1; - negop->icversion_data[1].minor = 0; + icframe_vercnt = negop->icframe_vercnt; + icmsg_vercnt = negop->icmsg_vercnt; + + /* + * Select the framework version number we will + * support. + */ + + for (i = 0; i < negop->icframe_vercnt; i++) { + if (negop->icversion_data[i].major <= max_fw_version) + icframe_vercnt = negop->icversion_data[i].major; + } + + for (i = negop->icframe_vercnt; + (i < negop->icframe_vercnt + negop->icmsg_vercnt); i++) { + if (negop->icversion_data[i].major <= max_srv_version) + icmsg_vercnt = negop->icversion_data[i].major; } + /* + * Respond with the maximum framework and service + * version numbers we can support. + */ negop->icframe_vercnt = 1; negop->icmsg_vercnt = 1; + negop->icversion_data[0].major = icframe_vercnt; + negop->icversion_data[0].minor = 0; + negop->icversion_data[1].major = icmsg_vercnt; + negop->icversion_data[1].minor = 0; } EXPORT_SYMBOL_GPL(vmbus_prep_negotiate_resp); diff --git a/drivers/hv/hv_kvp.c b/drivers/hv/hv_kvp.c index 6186025209ce..0012eed6d872 100644 --- a/drivers/hv/hv_kvp.c +++ b/drivers/hv/hv_kvp.c @@ -394,7 +394,8 @@ void hv_kvp_onchannelcallback(void *context) sizeof(struct vmbuspipe_hdr)]; if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) { - vmbus_prep_negotiate_resp(icmsghdrp, negop, recv_buffer); + vmbus_prep_negotiate_resp(icmsghdrp, negop, + recv_buffer, MAX_SRV_VER, MAX_SRV_VER); } else { kvp_msg = (struct hv_kvp_msg *)&recv_buffer[ sizeof(struct vmbuspipe_hdr) + diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c index dbb8b8eec210..d3ac6a40118b 100644 --- a/drivers/hv/hv_util.c +++ b/drivers/hv/hv_util.c @@ -70,7 +70,8 @@ static void shutdown_onchannelcallback(void *context) sizeof(struct vmbuspipe_hdr)]; if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) { - vmbus_prep_negotiate_resp(icmsghdrp, negop, shut_txf_buf); + vmbus_prep_negotiate_resp(icmsghdrp, negop, + shut_txf_buf, MAX_SRV_VER, MAX_SRV_VER); } else { shutdown_msg = (struct shutdown_msg_data *)&shut_txf_buf[ @@ -195,7 +196,8 @@ static void timesync_onchannelcallback(void *context) sizeof(struct vmbuspipe_hdr)]; if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) { - vmbus_prep_negotiate_resp(icmsghdrp, NULL, time_txf_buf); + vmbus_prep_negotiate_resp(icmsghdrp, NULL, time_txf_buf, + MAX_SRV_VER, MAX_SRV_VER); } else { timedatap = (struct ictimesync_data *)&time_txf_buf[ sizeof(struct vmbuspipe_hdr) + @@ -234,7 +236,8 @@ static void heartbeat_onchannelcallback(void *context) sizeof(struct vmbuspipe_hdr)]; if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) { - vmbus_prep_negotiate_resp(icmsghdrp, NULL, hbeat_txf_buf); + vmbus_prep_negotiate_resp(icmsghdrp, NULL, + hbeat_txf_buf, MAX_SRV_VER, MAX_SRV_VER); } else { heartbeat_msg = (struct heartbeat_msg_data *)&hbeat_txf_buf[ diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 5852545e6bba..22172bd43745 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1035,8 +1035,10 @@ struct hyperv_service_callback { void (*callback) (void *context); }; +#define MAX_SRV_VER 0x7ffffff extern void vmbus_prep_negotiate_resp(struct icmsg_hdr *, - struct icmsg_negotiate *, u8 *); + struct icmsg_negotiate *, u8 *, int, + int); int hv_kvp_init(struct hv_util_service *); void hv_kvp_deinit(void); |