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hyperv/hn: Add stat for # of chimney sending tries

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MFC after:	1 week
Sponsored by:	Microsoft OSTC
This commit is contained in:
Sepherosa Ziehau 2016-04-27 06:49:16 +00:00
parent 677d0d5076
commit 0fbe6eaef6
2 changed files with 6 additions and 0 deletions
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1
sys/dev/hyperv/netvsc/hv_net_vsc.h
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@ -1211,6 +1211,7 @@ struct hn_tx_ring {
u_long hn_send_failed;
u_long hn_txdma_failed;
u_long hn_tx_collapsed;
u_long hn_tx_chimney_tried;
u_long hn_tx_chimney;
u_long hn_pkts;

5
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
View File

@ -1004,6 +1004,7 @@ hn_encap(struct hn_tx_ring *txr, struct hn_txdesc *txd, struct mbuf **m_head0)
netvsc_dev *net_dev = txr->hn_sc->net_dev;
uint32_t send_buf_section_idx;
txr->hn_tx_chimney_tried++;
send_buf_section_idx =
hv_nv_get_next_send_section(net_dev);
if (send_buf_section_idx !=
@ -2595,6 +2596,10 @@ hn_create_tx_data(struct hn_softc *sc, int ring_cnt)
CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_MPSAFE, sc,
__offsetof(struct hn_tx_ring, hn_tx_chimney),
hn_tx_stat_ulong_sysctl, "LU", "# of chimney send");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "tx_chimney_tried",
CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_MPSAFE, sc,
__offsetof(struct hn_tx_ring, hn_tx_chimney_tried),
hn_tx_stat_ulong_sysctl, "LU", "# of chimney send tries");
SYSCTL_ADD_INT(ctx, child, OID_AUTO, "txdesc_cnt",
CTLFLAG_RD, &sc->hn_tx_ring[0].hn_txdesc_cnt, 0,
"# of total TX descs");