Author: sephe Date: Thu Aug 25 05:00:41 2016 New Revision: 304785 URL: https://svnweb.freebsd.org/changeset/base/304785
Log: hyperv/hn: Use vmbus xact for RNDIS initialize. MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7624 Modified: head/sys/dev/hyperv/netvsc/hv_net_vsc.c head/sys/dev/hyperv/netvsc/hv_net_vsc.h head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c head/sys/dev/hyperv/netvsc/hv_rndis_filter.c head/sys/dev/hyperv/netvsc/if_hnvar.h head/sys/net/rndis.h Modified: head/sys/dev/hyperv/netvsc/hv_net_vsc.c ============================================================================== --- head/sys/dev/hyperv/netvsc/hv_net_vsc.c Thu Aug 25 04:52:50 2016 (r304784) +++ head/sys/dev/hyperv/netvsc/hv_net_vsc.c Thu Aug 25 05:00:41 2016 (r304785) @@ -77,7 +77,7 @@ static void hn_nvs_sent_none(struct hn_s static void hn_nvs_sent_xact(struct hn_send_ctx *, struct hn_softc *sc, struct vmbus_channel *, const void *, int); -static struct hn_send_ctx hn_send_ctx_none = +struct hn_send_ctx hn_send_ctx_none = HN_SEND_CTX_INITIALIZER(hn_nvs_sent_none, NULL); uint32_t Modified: head/sys/dev/hyperv/netvsc/hv_net_vsc.h ============================================================================== --- head/sys/dev/hyperv/netvsc/hv_net_vsc.h Thu Aug 25 04:52:50 2016 (r304784) +++ head/sys/dev/hyperv/netvsc/hv_net_vsc.h Thu Aug 25 05:00:41 2016 (r304785) @@ -239,6 +239,11 @@ typedef struct { uint8_t link_state; } netvsc_device_info; +#define HN_XACT_REQ_PGCNT 2 +#define HN_XACT_RESP_PGCNT 2 +#define HN_XACT_REQ_SIZE (HN_XACT_REQ_PGCNT * PAGE_SIZE) +#define HN_XACT_RESP_SIZE (HN_XACT_RESP_PGCNT * PAGE_SIZE) + #ifndef HN_USE_TXDESC_BUFRING struct hn_txdesc; SLIST_HEAD(hn_txdesc_list, hn_txdesc); @@ -375,6 +380,8 @@ typedef struct hn_softc { uint32_t hn_chim_gpadl; struct hyperv_dma hn_chim_dma; + + uint32_t hn_rndis_rid; } hn_softc_t; #define HN_FLAG_RXBUF_CONNECTED 0x0001 Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c ============================================================================== --- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Thu Aug 25 04:52:50 2016 (r304784) +++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Thu Aug 25 05:00:41 2016 (r304785) @@ -125,9 +125,6 @@ __FBSDID("$FreeBSD$"); /* Short for Hyper-V network interface */ #define NETVSC_DEVNAME "hn" -#define HN_XACT_REQ_SIZE (2 * PAGE_SIZE) -#define HN_XACT_RESP_SIZE (2 * PAGE_SIZE) - /* * It looks like offset 0 of buf is reserved to hold the softc pointer. * The sc pointer evidently not needed, and is not presently populated. Modified: head/sys/dev/hyperv/netvsc/hv_rndis_filter.c ============================================================================== --- head/sys/dev/hyperv/netvsc/hv_rndis_filter.c Thu Aug 25 04:52:50 2016 (r304784) +++ head/sys/dev/hyperv/netvsc/hv_rndis_filter.c Thu Aug 25 05:00:41 2016 (r304785) @@ -65,6 +65,8 @@ __FBSDID("$FreeBSD$"); #define HN_RNDIS_RID_COMPAT_MASK 0xffff #define HN_RNDIS_RID_COMPAT_MAX HN_RNDIS_RID_COMPAT_MASK +#define HN_RNDIS_XFER_SIZE 2048 + /* * Forward declarations */ @@ -95,6 +97,20 @@ static void hn_rndis_sent_cb(struct hn_s struct hn_softc *sc, struct vmbus_channel *chan, const void *data, int dlen); +static __inline uint32_t +hn_rndis_rid(struct hn_softc *sc) +{ + uint32_t rid; + +again: + rid = atomic_fetchadd_int(&sc->hn_rndis_rid, 1); + if (rid == 0) + goto again; + + /* Use upper 16 bits for non-compat RNDIS messages. */ + return ((rid & 0xffff) << 16); +} + /* * Set the Per-Packet-Info with the specified type */ @@ -576,6 +592,8 @@ hv_rf_on_receive(struct hn_softc *sc, st if (comp->rm_rid <= HN_RNDIS_RID_COMPAT_MAX) { /* Transition time compat code */ hv_rf_receive_response(rndis_dev, rndis_hdr); + } else { + vmbus_xact_ctx_wakeup(sc->hn_xact, data, dlen); } break; @@ -872,62 +890,139 @@ exit: return (ret); } -/* - * RNDIS filter init device - */ -static int -hv_rf_init_device(rndis_device *device) +static const void * +hn_rndis_xact_execute(struct hn_softc *sc, struct vmbus_xact *xact, uint32_t rid, + size_t reqlen, size_t min_complen, uint32_t comp_type) { - rndis_request *request; - rndis_initialize_request *init; - rndis_initialize_complete *init_complete; - uint32_t status; - int ret; + struct vmbus_gpa gpa[HN_XACT_REQ_PGCNT]; + const struct rndis_comp_hdr *comp; + bus_addr_t paddr; + size_t comp_len; + int gpa_cnt, error; + + KASSERT(rid > HN_RNDIS_RID_COMPAT_MAX, ("invalid rid %u\n", rid)); + KASSERT(reqlen <= HN_XACT_REQ_SIZE && reqlen > 0, + ("invalid request length %zu", reqlen)); + KASSERT(min_complen >= sizeof(*comp), + ("invalid minimum complete len %zu", min_complen)); - request = hv_rndis_request(device, REMOTE_NDIS_INITIALIZE_MSG, - RNDIS_MESSAGE_SIZE(rndis_initialize_request)); - if (!request) { - ret = -1; - goto cleanup; + /* + * Setup the SG list. + */ + paddr = vmbus_xact_req_paddr(xact); + KASSERT((paddr & PAGE_MASK) == 0, + ("vmbus xact request is not page aligned 0x%jx", (uintmax_t)paddr)); + for (gpa_cnt = 0; gpa_cnt < HN_XACT_REQ_PGCNT; ++gpa_cnt) { + int len = PAGE_SIZE; + + if (reqlen == 0) + break; + if (reqlen < len) + len = reqlen; + + gpa[gpa_cnt].gpa_page = atop(paddr) + gpa_cnt; + gpa[gpa_cnt].gpa_len = len; + gpa[gpa_cnt].gpa_ofs = 0; + + reqlen -= len; } + KASSERT(reqlen == 0, ("still have %zu request data left", reqlen)); - /* Set up the rndis set */ - init = &request->request_msg.msg.init_request; - init->major_version = RNDIS_VERSION_MAJOR; - init->minor_version = RNDIS_VERSION_MINOR; /* - * Per the RNDIS document, this should be set to the max MTU - * plus the header size. However, 2048 works fine, so leaving - * it as is. + * Send this RNDIS control message and wait for its completion + * message. */ - init->max_xfer_size = 2048; - - device->state = RNDIS_DEV_INITIALIZING; + vmbus_xact_activate(xact); + error = hv_nv_on_send(sc->hn_prichan, HN_NVS_RNDIS_MTYPE_CTRL, + &hn_send_ctx_none, gpa, gpa_cnt); + if (error) { + vmbus_xact_deactivate(xact); + if_printf(sc->hn_ifp, "RNDIS ctrl send failed: %d\n", error); + return (NULL); + } + comp = vmbus_xact_wait(xact, &comp_len); - ret = hv_rf_send_request(device, request, REMOTE_NDIS_INITIALIZE_MSG); - if (ret != 0) { - device->state = RNDIS_DEV_UNINITIALIZED; - goto cleanup; + /* + * Check this RNDIS complete message. + */ + if (comp_len < min_complen) { + if_printf(sc->hn_ifp, "invalid RNDIS comp len %zu\n", comp_len); + return (NULL); + } + if (comp->rm_len < min_complen) { + if_printf(sc->hn_ifp, "invalid RNDIS comp msglen %u\n", + comp->rm_len); + return (NULL); + } + if (comp->rm_type != comp_type) { + if_printf(sc->hn_ifp, "unexpected RNDIS comp 0x%08x, " + "expect 0x%08x\n", comp->rm_type, comp_type); + return (NULL); + } + if (comp->rm_rid != rid) { + if_printf(sc->hn_ifp, "RNDIS comp rid mismatch %u, " + "expect %u\n", comp->rm_rid, rid); + return (NULL); } + /* All pass! */ + return (comp); +} - sema_wait(&request->wait_sema); +/* + * RNDIS filter init device + */ +static int +hv_rf_init_device(rndis_device *device) +{ + struct hn_softc *sc = device->sc; + struct rndis_init_req *req; + const struct rndis_init_comp *comp; + struct vmbus_xact *xact; + uint32_t rid; + int error; - init_complete = &request->response_msg.msg.init_complete; - status = init_complete->status; - if (status == RNDIS_STATUS_SUCCESS) { - device->state = RNDIS_DEV_INITIALIZED; - ret = 0; - } else { - device->state = RNDIS_DEV_UNINITIALIZED; - ret = -1; - } + /* XXX */ + device->state = RNDIS_DEV_INITIALIZED; -cleanup: - if (request) { - hv_put_rndis_request(device, request); + xact = vmbus_xact_get(sc->hn_xact, sizeof(*req)); + if (xact == NULL) { + if_printf(sc->hn_ifp, "no xact for RNDIS init\n"); + return (ENXIO); + } + rid = hn_rndis_rid(sc); + req = vmbus_xact_req_data(xact); + req->rm_type = REMOTE_NDIS_INITIALIZE_MSG; + req->rm_len = sizeof(*req); + req->rm_rid = rid; + req->rm_ver_major = RNDIS_VERSION_MAJOR; + req->rm_ver_minor = RNDIS_VERSION_MINOR; + req->rm_max_xfersz = HN_RNDIS_XFER_SIZE; + + comp = hn_rndis_xact_execute(sc, xact, rid, sizeof(*req), + RNDIS_INIT_COMP_SIZE_MIN, REMOTE_NDIS_INITIALIZE_CMPLT); + if (comp == NULL) { + if_printf(sc->hn_ifp, "exec RNDIS init failed\n"); + error = EIO; + goto done; + } + + if (comp->rm_status != RNDIS_STATUS_SUCCESS) { + if_printf(sc->hn_ifp, "RNDIS init failed: status 0x%08x\n", + comp->rm_status); + error = EIO; + goto done; + } + if (bootverbose) { + if_printf(sc->hn_ifp, "RNDIS ver %u.%u, pktsz %u, pktcnt %u\n", + comp->rm_ver_major, comp->rm_ver_minor, + comp->rm_pktmaxsz, comp->rm_pktmaxcnt); } + error = 0; - return (ret); +done: + if (xact != NULL) + vmbus_xact_put(xact); + return (error); } #define HALT_COMPLETION_WAIT_COUNT 25 Modified: head/sys/dev/hyperv/netvsc/if_hnvar.h ============================================================================== --- head/sys/dev/hyperv/netvsc/if_hnvar.h Thu Aug 25 04:52:50 2016 (r304784) +++ head/sys/dev/hyperv/netvsc/if_hnvar.h Thu Aug 25 05:00:41 2016 (r304785) @@ -115,4 +115,6 @@ const void *hn_nvs_xact_execute(struct h uint32_t hn_chim_alloc(struct hn_softc *sc); void hn_chim_free(struct hn_softc *sc, uint32_t chim_idx); +extern struct hn_send_ctx hn_send_ctx_none; + #endif /* !_IF_HNVAR_H_ */ Modified: head/sys/net/rndis.h ============================================================================== --- head/sys/net/rndis.h Thu Aug 25 04:52:50 2016 (r304784) +++ head/sys/net/rndis.h Thu Aug 25 05:00:41 2016 (r304785) @@ -146,6 +146,9 @@ struct rndis_init_comp { uint32_t rm_aflistsz; }; +#define RNDIS_INIT_COMP_SIZE_MIN \ + __offsetof(struct rndis_init_comp, rm_aflistsz) + /* Halt the device. No response sent. */ #define REMOTE_NDIS_HALT_MSG 0x00000003 _______________________________________________ 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"
