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hyperv/hn: Make transmission path channel aware

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Chimney sending buffer still needs conversion, which will be done
along with the upcoming vRSS support.

MFC after:	1 week
Sponsored by:	Microsoft OSTC
Differential Revision:	https://reviews.freebsd.org/D5457
This commit is contained in:
Sepherosa Ziehau 2016-02-26 09:50:35 +00:00
parent c10a0b9e69
commit 5f609a0812
4 changed files with 15 additions and 12 deletions
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6
sys/dev/hyperv/netvsc/hv_net_vsc.c
View File

@ -809,7 +809,7 @@ hv_nv_on_send_completion(netvsc_dev *net_dev,
* Returns 0 on success, non-zero on failure.
*/
int
hv_nv_on_send(struct hv_device *device, netvsc_packet *pkt)
hv_nv_on_send(struct hv_vmbus_channel *chan, netvsc_packet *pkt)
{
nvsp_msg send_msg;
int ret;
@ -829,11 +829,11 @@ hv_nv_on_send(struct hv_device *device, netvsc_packet *pkt)
pkt->send_buf_section_size;
if (pkt->page_buf_count) {
ret = hv_vmbus_channel_send_packet_pagebuffer(device->channel,
ret = hv_vmbus_channel_send_packet_pagebuffer(chan,
pkt->page_buffers, pkt->page_buf_count,
&send_msg, sizeof(nvsp_msg), (uint64_t)(uintptr_t)pkt);
} else {
ret = hv_vmbus_channel_send_packet(device->channel,
ret = hv_vmbus_channel_send_packet(chan,
&send_msg, sizeof(nvsp_msg), (uint64_t)(uintptr_t)pkt,
HV_VMBUS_PACKET_TYPE_DATA_IN_BAND,
HV_VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);

5
sys/dev/hyperv/netvsc/hv_net_vsc.h
View File

@ -1017,6 +1017,8 @@ struct hn_rx_ring {
#define HN_TRUST_HCSUM_TCP 0x0002
#define HN_TRUST_HCSUM_UDP 0x0004
struct hv_vmbus_channel;
struct hn_tx_ring {
#ifndef HN_USE_TXDESC_BUFRING
struct mtx hn_txlist_spin;
@ -1039,6 +1041,7 @@ struct hn_tx_ring {
struct mtx hn_tx_lock;
struct hn_softc *hn_sc;
struct hv_vmbus_channel *hn_chan;
int hn_direct_tx_size;
int hn_tx_chimney_size;
@ -1096,7 +1099,7 @@ netvsc_dev *hv_nv_on_device_add(struct hv_device *device,
void *additional_info);
int hv_nv_on_device_remove(struct hv_device *device,
boolean_t destroy_channel);
int hv_nv_on_send(struct hv_device *device, netvsc_packet *pkt);
int hv_nv_on_send(struct hv_vmbus_channel *chan, netvsc_packet *pkt);
int hv_nv_get_next_send_section(netvsc_dev *net_dev);
#endif /* __HV_NET_VSC_H__ */

14
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
View File

@ -436,6 +436,7 @@ netvsc_attach(device_t dev)
chan = device_ctx->channel;
chan->hv_chan_rxr = &sc->hn_rx_ring[0];
chan->hv_chan_txr = &sc->hn_tx_ring[0];
sc->hn_tx_ring[0].hn_chan = chan;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_dunit = unit;
@ -854,6 +855,8 @@ hn_encap(struct hn_tx_ring *txr, struct hn_txdesc *txd, struct mbuf **m_head0)
/*
* Chimney send, if the packet could fit into one chimney buffer.
*
* TODO: vRSS, chimney buffer should be per-channel.
*/
if (packet->tot_data_buf_len < txr->hn_tx_chimney_size) {
netvsc_dev *net_dev = txr->hn_sc->net_dev;
@ -940,8 +943,7 @@ hn_encap(struct hn_tx_ring *txr, struct hn_txdesc *txd, struct mbuf **m_head0)
* associated w/ the txd will _not_ be freed.
*/
static int
hn_send_pkt(struct ifnet *ifp, struct hv_device *device_ctx,
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;
@ -950,7 +952,7 @@ hn_send_pkt(struct ifnet *ifp, struct hv_device *device_ctx,
* Make sure that txd is not freed before ETHER_BPF_MTAP.
*/
hn_txdesc_hold(txd);
error = hv_nv_on_send(device_ctx, &txd->netvsc_pkt);
error = hv_nv_on_send(txr->hn_chan, &txd->netvsc_pkt);
if (!error) {
ETHER_BPF_MTAP(ifp, txd->m);
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
@ -1010,7 +1012,6 @@ hn_start_locked(struct hn_tx_ring *txr, int len)
{
struct hn_softc *sc = txr->hn_sc;
struct ifnet *ifp = sc->hn_ifp;
struct hv_device *device_ctx = vmbus_get_devctx(sc->hn_dev);
KASSERT(hn_use_if_start,
("hn_start_locked is called, when if_start is disabled"));
@ -1054,7 +1055,7 @@ hn_start_locked(struct hn_tx_ring *txr, int len)
continue;
}
error = hn_send_pkt(ifp, device_ctx, txr, txd);
error = hn_send_pkt(ifp, txr, txd);
if (__predict_false(error)) {
/* txd is freed, but m_head is not */
IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
@ -2497,7 +2498,6 @@ hn_xmit(struct hn_tx_ring *txr, int len)
{
struct hn_softc *sc = txr->hn_sc;
struct ifnet *ifp = sc->hn_ifp;
struct hv_device *device_ctx = vmbus_get_devctx(sc->hn_dev);
struct mbuf *m_head;
mtx_assert(&txr->hn_tx_lock, MA_OWNED);
@ -2536,7 +2536,7 @@ hn_xmit(struct hn_tx_ring *txr, int len)
continue;
}
error = hn_send_pkt(ifp, device_ctx, txr, txd);
error = hn_send_pkt(ifp, txr, txd);
if (__predict_false(error)) {
/* txd is freed, but m_head is not */
drbr_putback(ifp, txr->hn_mbuf_br, m_head);

2
sys/dev/hyperv/netvsc/hv_rndis_filter.c
View File

@ -250,7 +250,7 @@ hv_rf_send_request(rndis_device *device, rndis_request *request,
NVSP_1_CHIMNEY_SEND_INVALID_SECTION_INDEX;
packet->send_buf_section_size = 0;
ret = hv_nv_on_send(device->net_dev->dev, packet);
ret = hv_nv_on_send(device->net_dev->dev->channel, packet);
return (ret);
}