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

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sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c

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struct hn_txdesc {		struct hn_txdesc {
#ifndef HN_USE_TXDESC_BUFRING		#ifndef HN_USE_TXDESC_BUFRING
SLIST_ENTRY(hn_txdesc) link;		SLIST_ENTRY(hn_txdesc) link;
#endif		#endif
struct mbuf *m;		struct mbuf *m;
struct hn_tx_ring *txr;		struct hn_tx_ring *txr;
int refs;		int refs;
uint32_t flags; /* HN_TXD_FLAG_ */		uint32_t flags; /* HN_TXD_FLAG_ */
netvsc_packet netvsc_pkt; /* XXX to be removed */		struct hn_send_ctx send_ctx;

bus_dmamap_t data_dmap;		bus_dmamap_t data_dmap;

bus_addr_t rndis_msg_paddr;		bus_addr_t rndis_msg_paddr;
rndis_msg *rndis_msg;		rndis_msg *rndis_msg;
bus_dmamap_t rndis_msg_dmap;		bus_dmamap_t rndis_msg_dmap;
};		};

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static __inline void		static __inline void
hn_txeof(struct hn_tx_ring *txr)		hn_txeof(struct hn_tx_ring *txr)
{		{
txr->hn_has_txeof = 0;		txr->hn_has_txeof = 0;
txr->hn_txeof(txr);		txr->hn_txeof(txr);
}		}

static void		static void
hn_tx_done(struct vmbus_channel chan, void xpkt)		hn_tx_done(struct hn_send_ctx sndc, struct netvsc_dev_ net_dev,
		struct vmbus_channel chan, const struct nvsp_msg_ msg __unused)
{		{
netvsc_packet *packet = xpkt;		struct hn_txdesc *txd = sndc->hn_cbarg;
struct hn_txdesc *txd;
struct hn_tx_ring *txr;		struct hn_tx_ring *txr;

txd = (struct hn_txdesc *)(uintptr_t)		if (sndc->hn_chim_idx != NVSP_1_CHIMNEY_SEND_INVALID_SECTION_INDEX)
packet->compl.send.send_completion_tid;		hn_chim_free(net_dev, sndc->hn_chim_idx);

txr = txd->txr;		txr = txd->txr;
KASSERT(txr->hn_chan == chan,		KASSERT(txr->hn_chan == chan,
("channel mismatch, on chan%u, should be chan%u",		("channel mismatch, on chan%u, should be chan%u",
vmbus_chan_subidx(chan), vmbus_chan_subidx(txr->hn_chan)));		vmbus_chan_subidx(chan), vmbus_chan_subidx(txr->hn_chan)));

txr->hn_has_txeof = 1;		txr->hn_has_txeof = 1;
hn_txdesc_put(txr, txd);		hn_txdesc_put(txr, txd);
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* If this function fails, then both txd and m_head0 will be freed.		* If this function fails, then both txd and m_head0 will be freed.
*/		*/
static int		static int
hn_encap(struct hn_tx_ring txr, struct hn_txdesc txd, struct mbuf **m_head0)		hn_encap(struct hn_tx_ring txr, struct hn_txdesc txd, struct mbuf **m_head0)
{		{
bus_dma_segment_t segs[HN_TX_DATA_SEGCNT_MAX];		bus_dma_segment_t segs[HN_TX_DATA_SEGCNT_MAX];
int error, nsegs, i;		int error, nsegs, i;
struct mbuf m_head = m_head0;		struct mbuf m_head = m_head0;
netvsc_packet *packet;
rndis_msg *rndis_mesg;		rndis_msg *rndis_mesg;
rndis_packet *rndis_pkt;		rndis_packet *rndis_pkt;
rndis_per_packet_info *rppi;		rndis_per_packet_info *rppi;
struct rndis_hash_value *hash_value;		struct rndis_hash_value *hash_value;
uint32_t rndis_msg_size;		uint32_t rndis_msg_size, tot_data_buf_len, send_buf_section_idx;
		int send_buf_section_size;

packet = &txd->netvsc_pkt;		tot_data_buf_len = m_head->m_pkthdr.len;
packet->is_data_pkt = TRUE;
packet->tot_data_buf_len = m_head->m_pkthdr.len;

/*		/*
* extension points to the area reserved for the		* extension points to the area reserved for the
* rndis_filter_packet, which is placed just after		* rndis_filter_packet, which is placed just after
* the netvsc_packet (and rppi struct, if present;		* the netvsc_packet (and rppi struct, if present;
* length is updated later).		* length is updated later).
*/		*/
rndis_mesg = txd->rndis_msg;		rndis_mesg = txd->rndis_msg;
/* XXX not necessary */		/* XXX not necessary */
memset(rndis_mesg, 0, HN_RNDIS_MSG_LEN);		memset(rndis_mesg, 0, HN_RNDIS_MSG_LEN);
rndis_mesg->ndis_msg_type = REMOTE_NDIS_PACKET_MSG;		rndis_mesg->ndis_msg_type = REMOTE_NDIS_PACKET_MSG;

rndis_pkt = &rndis_mesg->msg.packet;		rndis_pkt = &rndis_mesg->msg.packet;
rndis_pkt->data_offset = sizeof(rndis_packet);		rndis_pkt->data_offset = sizeof(rndis_packet);
rndis_pkt->data_length = packet->tot_data_buf_len;		rndis_pkt->data_length = tot_data_buf_len;
rndis_pkt->per_pkt_info_offset = sizeof(rndis_packet);		rndis_pkt->per_pkt_info_offset = sizeof(rndis_packet);

rndis_msg_size = RNDIS_MESSAGE_SIZE(rndis_packet);		rndis_msg_size = RNDIS_MESSAGE_SIZE(rndis_packet);

/*		/*
* Set the hash value for this packet, so that the host could		* Set the hash value for this packet, so that the host could
* dispatch the TX done event for this packet back to this TX		* dispatch the TX done event for this packet back to this TX
* ring's channel.		* ring's channel.
▲ Show 20 Lines • Show All 91 Lines • ▼ Show 20 Lines	#endif
if (m_head->m_pkthdr.csum_flags & CSUM_TCP) {		if (m_head->m_pkthdr.csum_flags & CSUM_TCP) {
csum_info->xmit.tcp_csum = 1;		csum_info->xmit.tcp_csum = 1;
csum_info->xmit.tcp_header_offset = 0;		csum_info->xmit.tcp_header_offset = 0;
} else if (m_head->m_pkthdr.csum_flags & CSUM_UDP) {		} else if (m_head->m_pkthdr.csum_flags & CSUM_UDP) {
csum_info->xmit.udp_csum = 1;		csum_info->xmit.udp_csum = 1;
}		}
}		}

rndis_mesg->msg_len = packet->tot_data_buf_len + rndis_msg_size;		rndis_mesg->msg_len = tot_data_buf_len + rndis_msg_size;
packet->tot_data_buf_len = rndis_mesg->msg_len;		tot_data_buf_len = rndis_mesg->msg_len;

/*		/*
* Chimney send, if the packet could fit into one chimney buffer.		* Chimney send, if the packet could fit into one chimney buffer.
*/		*/
if (packet->tot_data_buf_len < txr->hn_tx_chimney_size) {		if (tot_data_buf_len < txr->hn_tx_chimney_size) {
netvsc_dev *net_dev = txr->hn_sc->net_dev;		netvsc_dev *net_dev = txr->hn_sc->net_dev;
uint32_t send_buf_section_idx;

txr->hn_tx_chimney_tried++;		txr->hn_tx_chimney_tried++;
send_buf_section_idx =		send_buf_section_idx =
hv_nv_get_next_send_section(net_dev);		hv_nv_get_next_send_section(net_dev);
if (send_buf_section_idx !=		if (send_buf_section_idx !=
NVSP_1_CHIMNEY_SEND_INVALID_SECTION_INDEX) {		NVSP_1_CHIMNEY_SEND_INVALID_SECTION_INDEX) {
uint8_t dest = ((uint8_t )net_dev->send_buf +		uint8_t dest = ((uint8_t )net_dev->send_buf +
(send_buf_section_idx *		(send_buf_section_idx *
net_dev->send_section_size));		net_dev->send_section_size));

memcpy(dest, rndis_mesg, rndis_msg_size);		memcpy(dest, rndis_mesg, rndis_msg_size);
dest += rndis_msg_size;		dest += rndis_msg_size;
m_copydata(m_head, 0, m_head->m_pkthdr.len, dest);		m_copydata(m_head, 0, m_head->m_pkthdr.len, dest);

packet->send_buf_section_idx = send_buf_section_idx;		send_buf_section_size = tot_data_buf_len;
packet->send_buf_section_size =
packet->tot_data_buf_len;
txr->hn_gpa_cnt = 0;		txr->hn_gpa_cnt = 0;
txr->hn_tx_chimney++;		txr->hn_tx_chimney++;
goto done;		goto done;
}		}
}		}

error = hn_txdesc_dmamap_load(txr, txd, &m_head, segs, &nsegs);		error = hn_txdesc_dmamap_load(txr, txd, &m_head, segs, &nsegs);
if (error) {		if (error) {
Show All 30 Lines	for (i = 0; i < nsegs; ++i) {
struct vmbus_gpa *gpa = &txr->hn_gpa[		struct vmbus_gpa *gpa = &txr->hn_gpa[
i + HV_RF_NUM_TX_RESERVED_PAGE_BUFS];		i + HV_RF_NUM_TX_RESERVED_PAGE_BUFS];

gpa->gpa_page = atop(segs[i].ds_addr);		gpa->gpa_page = atop(segs[i].ds_addr);
gpa->gpa_ofs = segs[i].ds_addr & PAGE_MASK;		gpa->gpa_ofs = segs[i].ds_addr & PAGE_MASK;
gpa->gpa_len = segs[i].ds_len;		gpa->gpa_len = segs[i].ds_len;
}		}

packet->send_buf_section_idx =		send_buf_section_idx = NVSP_1_CHIMNEY_SEND_INVALID_SECTION_INDEX;
NVSP_1_CHIMNEY_SEND_INVALID_SECTION_INDEX;		send_buf_section_size = 0;
packet->send_buf_section_size = 0;
done:		done:
txd->m = m_head;		txd->m = m_head;

/* Set the completion routine */		/* Set the completion routine */
packet->compl.send.on_send_completion = hn_tx_done;		hn_send_ctx_init(&txd->send_ctx, hn_tx_done, txd,
packet->compl.send.send_completion_context = packet;		send_buf_section_idx, send_buf_section_size);
packet->compl.send.send_completion_tid = (uint64_t)(uintptr_t)txd;

return 0;		return 0;
}		}

/*		/*
* NOTE:		* NOTE:
* If this function fails, then txd will be freed, but the mbuf		* If this function fails, then txd will be freed, but the mbuf
* associated w/ the txd will _not_ be freed.		* associated w/ the txd will _not_ be freed.
*/		*/
static int		static int
hn_send_pkt(struct ifnet ifp, struct hn_tx_ring txr, struct hn_txdesc *txd)		hn_send_pkt(struct ifnet ifp, struct hn_tx_ring txr, struct hn_txdesc *txd)
{		{
int error, send_failed = 0;		int error, send_failed = 0;

again:		again:
/*		/*
* Make sure that txd is not freed before ETHER_BPF_MTAP.		* Make sure that txd is not freed before ETHER_BPF_MTAP.
*/		*/
hn_txdesc_hold(txd);		hn_txdesc_hold(txd);
error = hv_nv_on_send(txr->hn_chan, &txd->netvsc_pkt,		error = hv_nv_on_send(txr->hn_chan, true, &txd->send_ctx,
txr->hn_gpa, txr->hn_gpa_cnt);		txr->hn_gpa, txr->hn_gpa_cnt);
if (!error) {		if (!error) {
ETHER_BPF_MTAP(ifp, txd->m);		ETHER_BPF_MTAP(ifp, txd->m);
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);		if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
if (!hn_use_if_start) {		if (!hn_use_if_start) {
if_inc_counter(ifp, IFCOUNTER_OBYTES,		if_inc_counter(ifp, IFCOUNTER_OBYTES,
txd->m->m_pkthdr.len);		txd->m->m_pkthdr.len);
if (txd->m->m_flags & M_MCAST)		if (txd->m->m_flags & M_MCAST)
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