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head/sys/dev/hyperv/netvsc/hv_net_vsc.c
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| * Net VSC on receive completion | * Net VSC on receive completion | ||||
| * | * | ||||
| * Send a receive completion packet to RNDIS device (ie NetVsp) | * Send a receive completion packet to RNDIS device (ie NetVsp) | ||||
| */ | */ | ||||
| static void | static void | ||||
| hv_nv_on_receive_completion(struct vmbus_channel *chan, uint64_t tid, | hv_nv_on_receive_completion(struct vmbus_channel *chan, uint64_t tid, | ||||
| uint32_t status) | uint32_t status) | ||||
| { | { | ||||
| nvsp_msg rx_comp_msg; | struct hn_nvs_rndis_ack ack; | ||||
| int retries = 0; | int retries = 0; | ||||
| int ret = 0; | int ret = 0; | ||||
| rx_comp_msg.hdr.msg_type = nvsp_msg_1_type_send_rndis_pkt_complete; | ack.nvs_type = HN_NVS_TYPE_RNDIS_ACK; | ||||
| ack.nvs_status = status; | |||||
| /* Pass in the status */ | |||||
| rx_comp_msg.msgs.vers_1_msgs.send_rndis_pkt_complete.status = | |||||
| status; | |||||
| retry_send_cmplt: | retry_send_cmplt: | ||||
| /* Send the completion */ | /* Send the completion */ | ||||
| ret = vmbus_chan_send(chan, VMBUS_CHANPKT_TYPE_COMP, 0, | ret = vmbus_chan_send(chan, VMBUS_CHANPKT_TYPE_COMP, | ||||
| &rx_comp_msg, sizeof(nvsp_msg), tid); | VMBUS_CHANPKT_FLAG_NONE, &ack, sizeof(ack), tid); | ||||
| if (ret == 0) { | if (ret == 0) { | ||||
| /* success */ | /* success */ | ||||
| /* no-op */ | /* no-op */ | ||||
| } else if (ret == EAGAIN) { | } else if (ret == EAGAIN) { | ||||
| /* no more room... wait a bit and attempt to retry 3 times */ | /* no more room... wait a bit and attempt to retry 3 times */ | ||||
| retries++; | retries++; | ||||
| if (retries < 4) { | if (retries < 4) { | ||||
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