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Remove ifq_drops from struct ifqueue. Now queue drops are accounted in

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struct ifnet if_oqdrops.

Some netgraph modules used ifqueue w/o ifnet. Accounting of queue drops
is simply removed from them. There were no API to read this statistic.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
This commit is contained in:
Gleb Smirnoff 2014-09-19 09:01:19 +00:00
parent 35163b6c15
commit 56b61ca27a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=271856
22 changed files with 13 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
share/man/man9/altq.9
View File

@ -256,7 +256,6 @@ still work with
struct mbuf *ifq_tail; | struct mbuf *ifq_tail;
int ifq_len; | int ifq_len;
int ifq_maxlen; | int ifq_maxlen;
int ifq_drops; | int ifq_drops;
}; | /* driver queue fields */
| ......
| /* altq related fields */

1
sys/contrib/altq/altq/if_altq.h
View File

@ -50,7 +50,6 @@ struct ifaltq {
struct mbuf *ifq_tail;
int ifq_len;
int ifq_maxlen;
int ifq_drops;
#ifdef __FreeBSD__
struct mtx ifq_mtx;
#endif

1
sys/dev/ce/if_ce.c
View File

@ -2408,7 +2408,6 @@ static int ng_ce_rcvdata (hook_p hook, struct mbuf *m, meta_p meta)
#if __FreeBSD_version >= 500000
IF_LOCK (q);
if (_IF_QFULL (q)) {
_IF_DROP (q);
IF_UNLOCK (q);
CE_UNLOCK (bd);
splx (s);

1
sys/dev/cp/if_cp.c
View File

@ -2141,7 +2141,6 @@ static int ng_cp_rcvdata (hook_p hook, item_p item)
CP_LOCK (bd);
IF_LOCK (q);
if (_IF_QFULL (q)) {
_IF_DROP (q);
IF_UNLOCK (q);
CP_UNLOCK (bd);
splx (s);

1
sys/dev/ctau/if_ct.c
View File

@ -2083,7 +2083,6 @@ static int ng_ct_rcvdata (hook_p hook, item_p item)
CT_LOCK (bd);
IF_LOCK (q);
if (_IF_QFULL (q)) {
_IF_DROP (q);
IF_UNLOCK (q);
CT_UNLOCK (bd);
splx (s);

1
sys/dev/cx/if_cx.c
View File

@ -2421,7 +2421,6 @@ static int ng_cx_rcvdata (hook_p hook, item_p item)
CX_LOCK (bd);
IF_LOCK (q);
if (_IF_QFULL (q)) {
_IF_DROP (q);
IF_UNLOCK (q);
CX_UNLOCK (bd);
splx (s);

2
sys/dev/cxgb/cxgb_main.c
View File

@ -2357,7 +2357,7 @@ cxgb_tick_handler(void *arg, int count)
drops = 0;
for (j = pi->first_qset; j < pi->first_qset + pi->nqsets; j++)
drops += sc->sge.qs[j].txq[TXQ_ETH].txq_mr->br_drops;
ifp->if_snd.ifq_drops = drops;
ifp->if_oqdrops = drops;
ifp->if_oerrors =
mstats->tx_excess_collisions +

1
sys/dev/lmc/if_lmc.c
View File

@ -4635,6 +4635,7 @@ lmc_raw_output(struct ifnet *ifp, struct mbuf *m,
{
m_freem(m);
sc->status.cntrs.odiscards++;
ifp->if_oqdrops++;
if (DRIVER_DEBUG)
printf("%s: lmc_raw_output: IFQ_ENQUEUE() failed; error %d\n",
NAME_UNIT, error);

2
sys/dev/mxge/if_mxge.c
View File

@ -4069,7 +4069,7 @@ mxge_update_stats(mxge_softc_t *sc)
#ifdef IFNET_BUF_RING
sc->ifp->if_obytes = obytes;
sc->ifp->if_omcasts = omcasts;
sc->ifp->if_snd.ifq_drops = odrops;
sc->ifp->if_oqdrops = odrops;
#endif
sc->ifp->if_oerrors = oerrors;
return pkts;

2
sys/net/if.c
View File

@ -3521,8 +3521,8 @@ if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, int adjust)
IF_LOCK(ifq);
if (_IF_QFULL(ifq)) {
_IF_DROP(ifq);
IF_UNLOCK(ifq);
ifp->if_oqdrops++;
m_freem(m);
return (0);
}

1
sys/net/if_debug.c
View File

@ -79,7 +79,6 @@ if_show_ifnet(struct ifnet *ifp)
IF_DB_PRINTF("%p", if_snd.ifq_tail);
IF_DB_PRINTF("%d", if_snd.ifq_len);
IF_DB_PRINTF("%d", if_snd.ifq_maxlen);
IF_DB_PRINTF("%d", if_snd.ifq_drops);
IF_DB_PRINTF("%p", if_snd.ifq_drv_head);
IF_DB_PRINTF("%p", if_snd.ifq_drv_tail);
IF_DB_PRINTF("%d", if_snd.ifq_drv_len);

2
sys/net/if_epair.c
View File

@ -517,7 +517,7 @@ epair_transmit_locked(struct ifnet *ifp, struct mbuf *m)
if (ALTQ_IS_ENABLED(&ifp->if_snd)) {
ALTQ_ENQUEUE(&ifp->if_snd, m, NULL, error);
if (error)
ifp->if_snd.ifq_drops++;
ifp->if_oqdrops++;
IF_UNLOCK(&ifp->if_snd);
if (!error) {
ifp->if_obytes += len;

3
sys/net/if_mib.c
View File

@ -105,7 +105,8 @@ sysctl_ifdata(SYSCTL_HANDLER_ARGS) /* XXX bad syntax! */
ifmd.ifmd_flags = ifp->if_flags | ifp->if_drv_flags;
ifmd.ifmd_snd_len = ifp->if_snd.ifq_len;
ifmd.ifmd_snd_maxlen = ifp->if_snd.ifq_maxlen;
ifmd.ifmd_snd_drops = ifp->if_snd.ifq_drops;
ifmd.ifmd_snd_drops =
ifp->if_get_counter(ifp, IFCOUNTER_OQDROPS);
error = SYSCTL_OUT(req, &ifmd, sizeof ifmd);
if (error)

10
sys/net/ifq.h
View File

@ -53,7 +53,6 @@ struct ifqueue {
struct mbuf *ifq_tail;
int ifq_len;
int ifq_maxlen;
int ifq_drops;
struct mtx ifq_mtx;
};
@ -68,7 +67,6 @@ struct ifqueue {
#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx)
#define IF_LOCK_ASSERT(ifq) mtx_assert(&(ifq)->ifq_mtx, MA_OWNED)
#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
#define _IF_DROP(ifq) ((ifq)->ifq_drops++)
#define _IF_QLEN(ifq) ((ifq)->ifq_len)
#define _IF_ENQUEUE(ifq, m) do { \
@ -171,8 +169,6 @@ do { \
(err) = 0; \
} \
} \
if (err) \
(ifq)->ifq_drops++; \
IF_UNLOCK(ifq); \
} while (0)
@ -234,7 +230,6 @@ do { \
#define IFQ_IS_EMPTY(ifq) ((ifq)->ifq_len == 0)
#define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++)
#define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len)
#define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++)
#define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len))
/*
@ -255,7 +250,8 @@ do { \
(ifp)->if_omcasts++; \
if (((ifp)->if_drv_flags & IFF_DRV_OACTIVE) == 0) \
if_start(ifp); \
} \
} else \
ifp->if_oqdrops++; \
} while (0)
#define IFQ_HANDOFF(ifp, m, err) \
@ -321,6 +317,8 @@ drbr_enqueue(struct ifnet *ifp, struct buf_ring *br, struct mbuf *m)
#ifdef ALTQ
if (ALTQ_IS_ENABLED(&ifp->if_snd)) {
IFQ_ENQUEUE(&ifp->if_snd, m, error);
if (error)
ifp->if_oqdrops++;
return (error);
}
#endif

6
sys/net/rtsock.c
View File

@ -1577,9 +1577,6 @@ sysctl_iflist_ifml(struct ifnet *ifp, struct rt_addrinfo *info,
if_data_copy(ifp, ifd);
/* Some drivers still use ifqueue(9), add its stats. */
ifd->ifi_oqdrops += ifp->if_snd.ifq_drops;
return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len));
}
@ -1612,9 +1609,6 @@ sysctl_iflist_ifm(struct ifnet *ifp, struct rt_addrinfo *info,
if_data_copy(ifp, ifd);
/* Some drivers still use ifqueue(9), add its stats. */
ifd->ifi_oqdrops += ifp->if_snd.ifq_drops;
return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len));
}

2
sys/netgraph/bluetooth/drivers/bt3c/ng_bt3c_pccard.c
View File

@ -560,7 +560,6 @@ ng_bt3c_rcvdata(hook_p hook, item_p item)
NG_BT3C_ERR(sc->dev,
"Outgoing queue is full. Dropping mbuf, len=%d\n", m->m_pkthdr.len);
_IF_DROP(&sc->outq);
NG_BT3C_STAT_OERROR(sc->stat);
NG_FREE_M(m);
@ -939,7 +938,6 @@ bt3c_receive(bt3c_softc_p sc)
NG_BT3C_ERR(sc->dev,
"Incoming queue is full. Dropping mbuf, len=%d\n", sc->m->m_pkthdr.len);
_IF_DROP(&sc->inq);
NG_BT3C_STAT_IERROR(sc->stat);
NG_FREE_M(sc->m);

1
sys/netgraph/bluetooth/drivers/h4/ng_h4.c
View File

@ -798,7 +798,6 @@ ng_h4_rcvdata(hook_p hook, item_p item)
NG_NODE_NAME(sc->node), m->m_pkthdr.len);
NG_H4_STAT_OERROR(sc->stat);
_IF_DROP(&sc->outq);
NG_H4_UNLOCK(sc);

1
sys/netgraph/ng_device.c
View File

@ -270,7 +270,6 @@ ng_device_rcvdata(hook_p hook, item_p item)
IF_LOCK(&priv->readq);
if (_IF_QFULL(&priv->readq)) {
_IF_DROP(&priv->readq);
IF_UNLOCK(&priv->readq);
NG_FREE_M(m);
return (ENOBUFS);

5
sys/netgraph/ng_iface.c
View File

@ -393,10 +393,7 @@ ng_iface_output(struct ifnet *ifp, struct mbuf *m,
if (ALTQ_IS_ENABLED(&ifp->if_snd)) {
M_PREPEND(m, sizeof(sa_family_t), M_NOWAIT);
if (m == NULL) {
IFQ_LOCK(&ifp->if_snd);
IFQ_INC_DROPS(&ifp->if_snd);
IFQ_UNLOCK(&ifp->if_snd);
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
if_inc_counter(ifp, IFCOUNTER_OQDROPS, 1);
return (ENOBUFS);
}
*(sa_family_t *)m->m_data = af;

1
sys/netgraph/ng_tty.c
View File

@ -327,7 +327,6 @@ ngt_rcvdata(hook_p hook, item_p item)
IF_LOCK(&sc->outq);
if (_IF_QFULL(&sc->outq)) {
_IF_DROP(&sc->outq);
IF_UNLOCK(&sc->outq);
NG_FREE_M(m);
return (ENOBUFS);

1
sys/netpfil/pf/if_pflog.c
View File

@ -159,7 +159,6 @@ pflogstart(struct ifnet *ifp)
for (;;) {
IF_LOCK(&ifp->if_snd);
_IF_DROP(&ifp->if_snd);
_IF_DEQUEUE(&ifp->if_snd, m);
IF_UNLOCK(&ifp->if_snd);

2
sys/netpfil/pf/if_pfsync.c
View File

@ -1640,7 +1640,7 @@ pfsync_sendout(int schedswi)
_IF_ENQUEUE(&sc->sc_ifp->if_snd, m);
else {
m_freem(m);
sc->sc_ifp->if_snd.ifq_drops++;
sc->sc_ifp->if_oqdrops++;
}
if (schedswi)
swi_sched(V_pfsync_swi_cookie, 0);