Author: sephe Date: Mon Aug 15 05:00:37 2016 New Revision: 304109 URL: https://svnweb.freebsd.org/changeset/base/304109
Log: hyperv/hn: Simplify chimney sending buffer disconnection. MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7479 Modified: head/sys/dev/hyperv/netvsc/hv_net_vsc.c head/sys/dev/hyperv/netvsc/if_hnreg.h Modified: head/sys/dev/hyperv/netvsc/hv_net_vsc.c ============================================================================== --- head/sys/dev/hyperv/netvsc/hv_net_vsc.c Mon Aug 15 04:59:38 2016 (r304108) +++ head/sys/dev/hyperv/netvsc/hv_net_vsc.c Mon Aug 15 05:00:37 2016 (r304109) @@ -436,33 +436,24 @@ hv_nv_destroy_rx_buffer(netvsc_dev *net_ static int hv_nv_destroy_send_buffer(netvsc_dev *net_dev) { - nvsp_msg *revoke_pkt; int ret = 0; - /* - * If we got a section count, it means we received a - * 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->send_section_size) { - /* Send the revoke send buffer */ - revoke_pkt = &net_dev->revoke_packet; - memset(revoke_pkt, 0, sizeof(nvsp_msg)); - - revoke_pkt->hdr.msg_type = - nvsp_msg_1_type_revoke_send_buf; - revoke_pkt->msgs.vers_1_msgs.revoke_send_buf.id = - NETVSC_SEND_BUFFER_ID; + struct hn_nvs_chim_disconn disconn; - ret = vmbus_chan_send(net_dev->sc->hn_prichan, - VMBUS_CHANPKT_TYPE_INBAND, 0, revoke_pkt, sizeof(nvsp_msg), - (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 + * Disconnect chimney sending buffer from NVS. */ + memset(&disconn, 0, sizeof(disconn)); + disconn.nvs_type = HN_NVS_TYPE_CHIM_DISCONN; + disconn.nvs_sig = HN_NVS_CHIM_SIG; + + ret = vmbus_chan_send(net_dev->sc->hn_prichan, + VMBUS_CHANPKT_TYPE_INBAND, 0, &disconn, sizeof(disconn), + (uint64_t)(uintptr_t)&hn_send_ctx_none); if (ret != 0) { + if_printf(net_dev->sc->hn_ifp, + "send chim disconn failed: %d\n", ret); return (ret); } } Modified: head/sys/dev/hyperv/netvsc/if_hnreg.h ============================================================================== --- head/sys/dev/hyperv/netvsc/if_hnreg.h Mon Aug 15 04:59:38 2016 (r304108) +++ head/sys/dev/hyperv/netvsc/if_hnreg.h Mon Aug 15 05:00:37 2016 (r304109) @@ -45,6 +45,7 @@ #define HN_NVS_TYPE_RXBUF_DISCONN 103 #define HN_NVS_TYPE_CHIM_CONN 104 #define HN_NVS_TYPE_CHIM_CONNRESP 105 +#define HN_NVS_TYPE_CHIM_DISCONN 106 #define HN_NVS_TYPE_NDIS_CONF 125 /* @@ -135,4 +136,12 @@ struct hn_nvs_chim_connresp { uint32_t nvs_sectsz; /* section size */ } __packed; +/* No response */ +struct hn_nvs_chim_disconn { + uint32_t nvs_type; /* HN_NVS_TYPE_CHIM_DISCONN */ + uint16_t nvs_sig; /* HN_NVS_CHIM_SIG */ + uint8_t nvs_rsvd[26]; +} __packed; +CTASSERT(sizeof(struct hn_nvs_chim_disconn) >= HN_NVS_REQSIZE_MIN); + #endif /* !_IF_HNREG_H_ */ _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
