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sys/dev/hyperv/netvsc/hv_net_vsc.c
| Show First 20 Lines • Show All 378 Lines • ▼ Show 20 Lines | |||||
| } | } | ||||
| /* | /* | ||||
| * Net VSC destroy receive buffer | * Net VSC destroy receive buffer | ||||
| */ | */ | ||||
| static int | static int | ||||
| hv_nv_destroy_rx_buffer(netvsc_dev *net_dev) | hv_nv_destroy_rx_buffer(netvsc_dev *net_dev) | ||||
| { | { | ||||
| nvsp_msg *revoke_pkt; | |||||
| int ret = 0; | int ret = 0; | ||||
| if (net_dev->rx_section_count) { | |||||
| struct hn_nvs_rxbuf_disconn disconn; | |||||
| /* | /* | ||||
| * If we got a section count, it means we received a | * Disconnect RXBUF from NVS. | ||||
| * send_rx_buf_complete msg | |||||
| * (ie sent nvsp_msg_1_type_send_rx_buf msg) therefore, | |||||
| * we need to send a revoke msg here | |||||
| */ | */ | ||||
| if (net_dev->rx_section_count) { | memset(&disconn, 0, sizeof(disconn)); | ||||
| /* Send the revoke receive buffer */ | disconn.nvs_type = HN_NVS_TYPE_RXBUF_DISCONN; | ||||
| revoke_pkt = &net_dev->revoke_packet; | disconn.nvs_sig = HN_NVS_RXBUF_SIG; | ||||
| memset(revoke_pkt, 0, sizeof(nvsp_msg)); | |||||
| revoke_pkt->hdr.msg_type = nvsp_msg_1_type_revoke_rx_buf; | |||||
| revoke_pkt->msgs.vers_1_msgs.revoke_rx_buf.id = | |||||
| NETVSC_RECEIVE_BUFFER_ID; | |||||
| ret = vmbus_chan_send(net_dev->sc->hn_prichan, | ret = vmbus_chan_send(net_dev->sc->hn_prichan, | ||||
| VMBUS_CHANPKT_TYPE_INBAND, 0, revoke_pkt, sizeof(nvsp_msg), | VMBUS_CHANPKT_TYPE_INBAND, 0, &disconn, sizeof(disconn), | ||||
| (uint64_t)(uintptr_t)&hn_send_ctx_none); | (uint64_t)(uintptr_t)&hn_send_ctx_none); | ||||
| /* | |||||
| * If we failed here, we might as well return and have a leak | |||||
| * rather than continue and a bugchk | |||||
| */ | |||||
| if (ret != 0) { | if (ret != 0) { | ||||
| if_printf(net_dev->sc->hn_ifp, | |||||
| "send rxbuf disconn failed: %d\n", ret); | |||||
| return (ret); | return (ret); | ||||
| } | } | ||||
| net_dev->rx_section_count = 0; | net_dev->rx_section_count = 0; | ||||
| } | } | ||||
| /* Tear down the gpadl on the vsp end */ | /* Tear down the gpadl on the vsp end */ | ||||
| if (net_dev->rx_buf_gpadl_handle) { | if (net_dev->rx_buf_gpadl_handle) { | ||||
| ret = vmbus_chan_gpadl_disconnect(net_dev->sc->hn_prichan, | ret = vmbus_chan_gpadl_disconnect(net_dev->sc->hn_prichan, | ||||
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