Differential D7450 Diff 19151 sys/dev/hyperv/netvsc/hv_net_vsc.c

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sys/dev/hyperv/netvsc/hv_net_vsc.c

Show First 20 Lines • Show All 62 Lines • ▼ Show 20 Lines
static int hv_nv_connect_to_vsp(struct hn_softc *sc);		static int hv_nv_connect_to_vsp(struct hn_softc *sc);
static void hv_nv_on_send_completion(netvsc_dev *net_dev,		static void hv_nv_on_send_completion(netvsc_dev *net_dev,
struct vmbus_channel , const struct vmbus_chanpkt_hdr pkt);		struct vmbus_channel , const struct vmbus_chanpkt_hdr pkt);
static void hv_nv_on_receive_completion(struct vmbus_channel *chan,		static void hv_nv_on_receive_completion(struct vmbus_channel *chan,
uint64_t tid, uint32_t status);		uint64_t tid, uint32_t status);
static void hv_nv_on_receive(netvsc_dev *net_dev,		static void hv_nv_on_receive(netvsc_dev *net_dev,
struct hn_rx_ring rxr, struct vmbus_channel chan,		struct hn_rx_ring rxr, struct vmbus_channel chan,
const struct vmbus_chanpkt_hdr *pkt);		const struct vmbus_chanpkt_hdr *pkt);
		static void hn_nvs_sent_none(struct hn_send_ctx *sndc,
		struct netvsc_dev_ net_dev, struct vmbus_channel chan,
		const struct nvsp_msg_ *msg);

		static struct hn_send_ctx hn_send_ctx_none =
		HN_SEND_CTX_INITIALIZER(hn_nvs_sent_none, NULL);

/*		/*
*		*
*/		*/
static inline netvsc_dev *		static inline netvsc_dev *
hv_nv_alloc_net_device(struct hn_softc *sc)		hv_nv_alloc_net_device(struct hn_softc *sc)
{		{
netvsc_dev *net_dev;		netvsc_dev *net_dev;

▲ Show 20 Lines • Show All 56 Lines • ▼ Show 20 Lines
* Net VSC initialize receive buffer with net VSP		* Net VSC initialize receive buffer with net VSP
*		*
* Net VSP: Network virtual services client, also known as the		* Net VSP: Network virtual services client, also known as the
* Hyper-V extensible switch and the synthetic data path.		* Hyper-V extensible switch and the synthetic data path.
*/		*/
static int		static int
hv_nv_init_rx_buffer_with_net_vsp(struct hn_softc *sc)		hv_nv_init_rx_buffer_with_net_vsp(struct hn_softc *sc)
{		{
		struct hn_send_ctx sndc;
netvsc_dev *net_dev;		netvsc_dev *net_dev;
nvsp_msg *init_pkt;		nvsp_msg *init_pkt;
int ret = 0;		int ret = 0;

net_dev = hv_nv_get_outbound_net_device(sc);		net_dev = hv_nv_get_outbound_net_device(sc);
if (!net_dev) {		if (!net_dev) {
return (ENODEV);		return (ENODEV);
}		}
Show All 32 Lines	hv_nv_init_rx_buffer_with_net_vsp(struct hn_softc *sc)
init_pkt->hdr.msg_type = nvsp_msg_1_type_send_rx_buf;		init_pkt->hdr.msg_type = nvsp_msg_1_type_send_rx_buf;
init_pkt->msgs.vers_1_msgs.send_rx_buf.gpadl_handle =		init_pkt->msgs.vers_1_msgs.send_rx_buf.gpadl_handle =
net_dev->rx_buf_gpadl_handle;		net_dev->rx_buf_gpadl_handle;
init_pkt->msgs.vers_1_msgs.send_rx_buf.id =		init_pkt->msgs.vers_1_msgs.send_rx_buf.id =
NETVSC_RECEIVE_BUFFER_ID;		NETVSC_RECEIVE_BUFFER_ID;

/* Send the gpadl notification request */		/* Send the gpadl notification request */

		hn_send_ctx_init_simple(&sndc, hn_nvs_sent_wakeup, NULL);
ret = vmbus_chan_send(sc->hn_prichan,		ret = vmbus_chan_send(sc->hn_prichan,
VMBUS_CHANPKT_TYPE_INBAND, VMBUS_CHANPKT_FLAG_RC,		VMBUS_CHANPKT_TYPE_INBAND, VMBUS_CHANPKT_FLAG_RC,
init_pkt, sizeof(nvsp_msg), (uint64_t)(uintptr_t)init_pkt);		init_pkt, sizeof(nvsp_msg), (uint64_t)(uintptr_t)&sndc);
if (ret != 0) {		if (ret != 0) {
goto cleanup;		goto cleanup;
}		}

sema_wait(&net_dev->channel_init_sema);		sema_wait(&net_dev->channel_init_sema);

/* Check the response */		/* Check the response */
if (init_pkt->msgs.vers_1_msgs.send_rx_buf_complete.status		if (init_pkt->msgs.vers_1_msgs.send_rx_buf_complete.status
Show All 32 Lines
}		}

/*		/*
* Net VSC initialize send buffer with net VSP		* Net VSC initialize send buffer with net VSP
*/		*/
static int		static int
hv_nv_init_send_buffer_with_net_vsp(struct hn_softc *sc)		hv_nv_init_send_buffer_with_net_vsp(struct hn_softc *sc)
{		{
		struct hn_send_ctx sndc;
netvsc_dev *net_dev;		netvsc_dev *net_dev;
nvsp_msg *init_pkt;		nvsp_msg *init_pkt;
int ret = 0;		int ret = 0;

net_dev = hv_nv_get_outbound_net_device(sc);		net_dev = hv_nv_get_outbound_net_device(sc);
if (!net_dev) {		if (!net_dev) {
return (ENODEV);		return (ENODEV);
}		}
Show All 31 Lines	hv_nv_init_send_buffer_with_net_vsp(struct hn_softc *sc)
init_pkt->hdr.msg_type = nvsp_msg_1_type_send_send_buf;		init_pkt->hdr.msg_type = nvsp_msg_1_type_send_send_buf;
init_pkt->msgs.vers_1_msgs.send_rx_buf.gpadl_handle =		init_pkt->msgs.vers_1_msgs.send_rx_buf.gpadl_handle =
net_dev->send_buf_gpadl_handle;		net_dev->send_buf_gpadl_handle;
init_pkt->msgs.vers_1_msgs.send_rx_buf.id =		init_pkt->msgs.vers_1_msgs.send_rx_buf.id =
NETVSC_SEND_BUFFER_ID;		NETVSC_SEND_BUFFER_ID;

/* Send the gpadl notification request */		/* Send the gpadl notification request */

		hn_send_ctx_init_simple(&sndc, hn_nvs_sent_wakeup, NULL);
ret = vmbus_chan_send(sc->hn_prichan,		ret = vmbus_chan_send(sc->hn_prichan,
VMBUS_CHANPKT_TYPE_INBAND, VMBUS_CHANPKT_FLAG_RC,		VMBUS_CHANPKT_TYPE_INBAND, VMBUS_CHANPKT_FLAG_RC,
init_pkt, sizeof(nvsp_msg), (uint64_t)init_pkt);		init_pkt, sizeof(nvsp_msg), (uint64_t)(uintptr_t)&sndc);
if (ret != 0) {		if (ret != 0) {
goto cleanup;		goto cleanup;
}		}

sema_wait(&net_dev->channel_init_sema);		sema_wait(&net_dev->channel_init_sema);

/* Check the response */		/* Check the response */
if (init_pkt->msgs.vers_1_msgs.send_send_buf_complete.status		if (init_pkt->msgs.vers_1_msgs.send_send_buf_complete.status
▲ Show 20 Lines • Show All 42 Lines • ▼ Show 20 Lines	if (net_dev->rx_section_count) {
memset(revoke_pkt, 0, sizeof(nvsp_msg));		memset(revoke_pkt, 0, sizeof(nvsp_msg));

revoke_pkt->hdr.msg_type = nvsp_msg_1_type_revoke_rx_buf;		revoke_pkt->hdr.msg_type = nvsp_msg_1_type_revoke_rx_buf;
revoke_pkt->msgs.vers_1_msgs.revoke_rx_buf.id =		revoke_pkt->msgs.vers_1_msgs.revoke_rx_buf.id =
NETVSC_RECEIVE_BUFFER_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, revoke_pkt, sizeof(nvsp_msg),
(uint64_t)(uintptr_t)revoke_pkt);		(uint64_t)(uintptr_t)&hn_send_ctx_none);

/*		/*
* If we failed here, we might as well return and have a leak		* If we failed here, we might as well return and have a leak
* rather than continue and a bugchk		* rather than continue and a bugchk
*/		*/
if (ret != 0) {		if (ret != 0) {
return (ret);		return (ret);
}		}
}		}
▲ Show 20 Lines • Show All 48 Lines • ▼ Show 20 Lines	if (net_dev->send_section_size) {
memset(revoke_pkt, 0, sizeof(nvsp_msg));		memset(revoke_pkt, 0, sizeof(nvsp_msg));

revoke_pkt->hdr.msg_type =		revoke_pkt->hdr.msg_type =
nvsp_msg_1_type_revoke_send_buf;		nvsp_msg_1_type_revoke_send_buf;
revoke_pkt->msgs.vers_1_msgs.revoke_send_buf.id =		revoke_pkt->msgs.vers_1_msgs.revoke_send_buf.id =
NETVSC_SEND_BUFFER_ID;		NETVSC_SEND_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,		VMBUS_CHANPKT_TYPE_INBAND, 0, revoke_pkt, sizeof(nvsp_msg),
revoke_pkt, sizeof(nvsp_msg),		(uint64_t)(uintptr_t)&hn_send_ctx_none);
(uint64_t)(uintptr_t)revoke_pkt);
/*		/*
* If we failed here, we might as well return and have a leak		* If we failed here, we might as well return and have a leak
* rather than continue and a bugchk		* rather than continue and a bugchk
*/		*/
if (ret != 0) {		if (ret != 0) {
return (ret);		return (ret);
}		}
}		}
Show All 33 Lines
* For NVSP v2, Server 2008 R2 does not set		* For NVSP v2, Server 2008 R2 does not set
* init_pkt->msgs.init_msgs.init_compl.negotiated_prot_vers		* init_pkt->msgs.init_msgs.init_compl.negotiated_prot_vers
* to the negotiated version, so we cannot rely on that.		* to the negotiated version, so we cannot rely on that.
*/		*/
static int		static int
hv_nv_negotiate_nvsp_protocol(struct hn_softc sc, netvsc_dev net_dev,		hv_nv_negotiate_nvsp_protocol(struct hn_softc sc, netvsc_dev net_dev,
uint32_t nvsp_ver)		uint32_t nvsp_ver)
{		{
		struct hn_send_ctx sndc;
nvsp_msg *init_pkt;		nvsp_msg *init_pkt;
int ret;		int ret;

init_pkt = &net_dev->channel_init_packet;		init_pkt = &net_dev->channel_init_packet;
memset(init_pkt, 0, sizeof(nvsp_msg));		memset(init_pkt, 0, sizeof(nvsp_msg));
init_pkt->hdr.msg_type = nvsp_msg_type_init;		init_pkt->hdr.msg_type = nvsp_msg_type_init;

/*		/*
* Specify parameter as the only acceptable protocol version		* Specify parameter as the only acceptable protocol version
*/		*/
init_pkt->msgs.init_msgs.init.p1.protocol_version = nvsp_ver;		init_pkt->msgs.init_msgs.init.p1.protocol_version = nvsp_ver;
init_pkt->msgs.init_msgs.init.protocol_version_2 = nvsp_ver;		init_pkt->msgs.init_msgs.init.protocol_version_2 = nvsp_ver;

/* Send the init request */		/* Send the init request */
		hn_send_ctx_init_simple(&sndc, hn_nvs_sent_wakeup, NULL);
ret = vmbus_chan_send(sc->hn_prichan,		ret = vmbus_chan_send(sc->hn_prichan,
VMBUS_CHANPKT_TYPE_INBAND, VMBUS_CHANPKT_FLAG_RC,		VMBUS_CHANPKT_TYPE_INBAND, VMBUS_CHANPKT_FLAG_RC,
init_pkt, sizeof(nvsp_msg), (uint64_t)(uintptr_t)init_pkt);		init_pkt, sizeof(nvsp_msg), (uint64_t)(uintptr_t)&sndc);
if (ret != 0)		if (ret != 0)
return (-1);		return (-1);

sema_wait(&net_dev->channel_init_sema);		sema_wait(&net_dev->channel_init_sema);

if (init_pkt->msgs.init_msgs.init_compl.status != nvsp_status_success)		if (init_pkt->msgs.init_msgs.init_compl.status != nvsp_status_success)
return (EINVAL);		return (EINVAL);

Show All 25 Lines	hv_nv_send_ndis_config(struct hn_softc *sc, uint32_t mtu)
init_pkt->hdr.msg_type = nvsp_msg_2_type_send_ndis_config;		init_pkt->hdr.msg_type = nvsp_msg_2_type_send_ndis_config;
init_pkt->msgs.vers_2_msgs.send_ndis_config.mtu = mtu;		init_pkt->msgs.vers_2_msgs.send_ndis_config.mtu = mtu;
init_pkt->		init_pkt->
msgs.vers_2_msgs.send_ndis_config.capabilities.u1.u2.ieee8021q		msgs.vers_2_msgs.send_ndis_config.capabilities.u1.u2.ieee8021q
= 1;		= 1;

/* Send the configuration packet */		/* Send the configuration packet */
ret = vmbus_chan_send(sc->hn_prichan, VMBUS_CHANPKT_TYPE_INBAND, 0,		ret = vmbus_chan_send(sc->hn_prichan, VMBUS_CHANPKT_TYPE_INBAND, 0,
init_pkt, sizeof(nvsp_msg), (uint64_t)(uintptr_t)init_pkt);		init_pkt, sizeof(nvsp_msg), (uint64_t)(uintptr_t)&hn_send_ctx_none);
if (ret != 0)		if (ret != 0)
return (-EINVAL);		return (-EINVAL);

return (0);		return (0);
}		}

/*		/*
* Net VSC connect to VSP		* Net VSC connect to VSP
▲ Show 20 Lines • Show All 61 Lines • ▼ Show 20 Lines	hv_nv_connect_to_vsp(struct hn_softc *sc)
init_pkt->msgs.vers_1_msgs.send_ndis_vers.ndis_major_vers =		init_pkt->msgs.vers_1_msgs.send_ndis_vers.ndis_major_vers =
(ndis_version & 0xFFFF0000) >> 16;		(ndis_version & 0xFFFF0000) >> 16;
init_pkt->msgs.vers_1_msgs.send_ndis_vers.ndis_minor_vers =		init_pkt->msgs.vers_1_msgs.send_ndis_vers.ndis_minor_vers =
ndis_version & 0xFFFF;		ndis_version & 0xFFFF;

/* Send the init request */		/* Send the init request */

ret = vmbus_chan_send(sc->hn_prichan, VMBUS_CHANPKT_TYPE_INBAND, 0,		ret = vmbus_chan_send(sc->hn_prichan, VMBUS_CHANPKT_TYPE_INBAND, 0,
init_pkt, sizeof(nvsp_msg), (uint64_t)(uintptr_t)init_pkt);		init_pkt, sizeof(nvsp_msg), (uint64_t)(uintptr_t)&hn_send_ctx_none);
if (ret != 0) {		if (ret != 0) {
goto cleanup;		goto cleanup;
}		}
/*		/*
* TODO: BUGBUG - We have to wait for the above msg since the netvsp		* TODO: BUGBUG - We have to wait for the above msg since the netvsp
* uses KMCL which acknowledges packet (completion packet)		* uses KMCL which acknowledges packet (completion packet)
* since our Vmbus always set the VMBUS_CHANPKT_FLAG_RC flag		* since our Vmbus always set the VMBUS_CHANPKT_FLAG_RC flag
*/		*/
▲ Show 20 Lines • Show All 112 Lines • ▼ Show 20 Lines	hv_nv_on_device_remove(struct hn_softc *sc, boolean_t destroy_channel)
vmbus_chan_close(sc->hn_prichan);		vmbus_chan_close(sc->hn_prichan);

sema_destroy(&net_dev->channel_init_sema);		sema_destroy(&net_dev->channel_init_sema);
free(net_dev, M_NETVSC);		free(net_dev, M_NETVSC);

return (0);		return (0);
}		}

/*		void
* Net VSC on send completion		hn_nvs_sent_wakeup(struct hn_send_ctx *sndc __unused,
*/		struct netvsc_dev_ net_dev, struct vmbus_channel chan __unused,
static void		const struct nvsp_msg_ *msg)
hv_nv_on_send_completion(netvsc_dev net_dev, struct vmbus_channel chan,
const struct vmbus_chanpkt_hdr *pkt)
{		{
const nvsp_msg *nvsp_msg_pkt;
netvsc_packet *net_vsc_pkt;

nvsp_msg_pkt = VMBUS_CHANPKT_CONST_DATA(pkt);

if (nvsp_msg_pkt->hdr.msg_type == nvsp_msg_type_init_complete
\|\| nvsp_msg_pkt->hdr.msg_type
== nvsp_msg_1_type_send_rx_buf_complete
\|\| nvsp_msg_pkt->hdr.msg_type
== nvsp_msg_1_type_send_send_buf_complete
\|\| nvsp_msg_pkt->hdr.msg_type
== nvsp_msg5_type_subchannel) {
/* Copy the response back */		/* Copy the response back */
memcpy(&net_dev->channel_init_packet, nvsp_msg_pkt,		memcpy(&net_dev->channel_init_packet, msg, sizeof(nvsp_msg));
sizeof(nvsp_msg));
sema_post(&net_dev->channel_init_sema);		sema_post(&net_dev->channel_init_sema);
} else if (nvsp_msg_pkt->hdr.msg_type ==		}
nvsp_msg_1_type_send_rndis_pkt_complete) {
/* Get the send context */		static void
net_vsc_pkt =		hn_nvs_sent_none(struct hn_send_ctx *sndc __unused,
(netvsc_packet *)(unsigned long)pkt->cph_xactid;		struct netvsc_dev_ net_dev __unused, struct vmbus_channel chan __unused,
if (NULL != net_vsc_pkt) {		const struct nvsp_msg_ *msg __unused)
if (net_vsc_pkt->send_buf_section_idx !=		{
NVSP_1_CHIMNEY_SEND_INVALID_SECTION_INDEX) {		/* EMPTY */
		}

		void
		hn_chim_free(struct netvsc_dev_ *net_dev, uint32_t chim_idx)
		{
u_long mask;		u_long mask;
int idx;		uint32_t idx;

idx = net_vsc_pkt->send_buf_section_idx /		idx = chim_idx / BITS_PER_LONG;
BITS_PER_LONG;
KASSERT(idx < net_dev->bitsmap_words,		KASSERT(idx < net_dev->bitsmap_words,
("invalid section index %u",		("invalid chimney index 0x%x", chim_idx));
net_vsc_pkt->send_buf_section_idx));
mask = 1UL <<
(net_vsc_pkt->send_buf_section_idx %
BITS_PER_LONG);

KASSERT(net_dev->send_section_bitsmap[idx] &		mask = 1UL << (chim_idx % BITS_PER_LONG);
mask,		KASSERT(net_dev->send_section_bitsmap[idx] & mask,
("index bitmap 0x%lx, section index %u, "		("index bitmap 0x%lx, chimney index %u, "
"bitmap idx %d, bitmask 0x%lx",		"bitmap idx %d, bitmask 0x%lx",
net_dev->send_section_bitsmap[idx],		net_dev->send_section_bitsmap[idx], chim_idx, idx, mask));
net_vsc_pkt->send_buf_section_idx,
idx, mask));		atomic_clear_long(&net_dev->send_section_bitsmap[idx], mask);
atomic_clear_long(
&net_dev->send_section_bitsmap[idx], mask);
}		}

/* Notify the layer above us */		/*
net_vsc_pkt->compl.send.on_send_completion(chan,		* Net VSC on send completion
net_vsc_pkt->compl.send.send_completion_context);		*/
		static void
		hv_nv_on_send_completion(netvsc_dev net_dev, struct vmbus_channel chan,
		const struct vmbus_chanpkt_hdr *pkt)
		{
		struct hn_send_ctx *sndc;

		sndc = (struct hn_send_ctx *)(uintptr_t)pkt->cph_xactid;
		sndc->hn_cb(sndc, net_dev, chan, VMBUS_CHANPKT_CONST_DATA(pkt));
		/*
		* NOTE:
		* 'sndc' CAN NOT be accessed anymore, since it can be freed by
		* its callback.
		*/
}		}
}
}

/*		/*
* Net VSC on send		* Net VSC on send
* Sends a packet on the specified Hyper-V device.		* Sends a packet on the specified Hyper-V device.
* Returns 0 on success, non-zero on failure.		* Returns 0 on success, non-zero on failure.
*/		*/
int		int
hv_nv_on_send(struct vmbus_channel *chan,		hv_nv_on_send(struct vmbus_channel *chan, bool is_data_pkt,
netvsc_packet pkt, struct vmbus_gpa gpa, int gpa_cnt)		struct hn_send_ctx sndc, struct vmbus_gpa gpa, int gpa_cnt)
{		{
nvsp_msg send_msg;		nvsp_msg send_msg;
int ret;		int ret;

send_msg.hdr.msg_type = nvsp_msg_1_type_send_rndis_pkt;		send_msg.hdr.msg_type = nvsp_msg_1_type_send_rndis_pkt;
if (pkt->is_data_pkt) {		if (is_data_pkt) {
/* 0 is RMC_DATA */		/* 0 is RMC_DATA */
send_msg.msgs.vers_1_msgs.send_rndis_pkt.chan_type = 0;		send_msg.msgs.vers_1_msgs.send_rndis_pkt.chan_type = 0;
} else {		} else {
/* 1 is RMC_CONTROL */		/* 1 is RMC_CONTROL */
send_msg.msgs.vers_1_msgs.send_rndis_pkt.chan_type = 1;		send_msg.msgs.vers_1_msgs.send_rndis_pkt.chan_type = 1;
}		}

send_msg.msgs.vers_1_msgs.send_rndis_pkt.send_buf_section_idx =		send_msg.msgs.vers_1_msgs.send_rndis_pkt.send_buf_section_idx =
pkt->send_buf_section_idx;		sndc->hn_chim_idx;
send_msg.msgs.vers_1_msgs.send_rndis_pkt.send_buf_section_size =		send_msg.msgs.vers_1_msgs.send_rndis_pkt.send_buf_section_size =
pkt->send_buf_section_size;		sndc->hn_chim_sz;

if (gpa_cnt) {		if (gpa_cnt) {
ret = vmbus_chan_send_sglist(chan, gpa, gpa_cnt,		ret = vmbus_chan_send_sglist(chan, gpa, gpa_cnt,
&send_msg, sizeof(nvsp_msg), (uint64_t)(uintptr_t)pkt);		&send_msg, sizeof(nvsp_msg), (uint64_t)(uintptr_t)sndc);
} else {		} else {
ret = vmbus_chan_send(chan,		ret = vmbus_chan_send(chan,
VMBUS_CHANPKT_TYPE_INBAND, VMBUS_CHANPKT_FLAG_RC,		VMBUS_CHANPKT_TYPE_INBAND, VMBUS_CHANPKT_FLAG_RC,
&send_msg, sizeof(nvsp_msg), (uint64_t)(uintptr_t)pkt);		&send_msg, sizeof(nvsp_msg), (uint64_t)(uintptr_t)sndc);
}		}

return (ret);		return (ret);
}		}

/*		/*
* Net VSC on receive		* Net VSC on receive
*		*
▲ Show 20 Lines • Show All 204 Lines • Show Last 20 Lines