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Add netdump hooks to alc(4).

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Tested with an AR8162.

Reviewed by:	julian, sbruno
MFC after:	1 month
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D15255
This commit is contained in:
Mark Johnston 2018-05-06 00:43:46 +00:00
parent 0ff40d3d29
commit 8a4665833d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=333285
1 changed files with 81 additions and 17 deletions
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98
sys/dev/alc/if_alc.c
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@ -64,6 +64,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <netinet/netdump/netdump.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
@ -199,6 +200,7 @@ static int alc_shutdown(device_t);
static void alc_start(struct ifnet *);
static void alc_start_locked(struct ifnet *);
static void alc_start_queue(struct alc_softc *);
static void alc_start_tx(struct alc_softc *);
static void alc_stats_clear(struct alc_softc *);
static void alc_stats_update(struct alc_softc *);
static void alc_stop(struct alc_softc *);
@ -213,6 +215,8 @@ static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int);
static int sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS);
static int sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS);
NETDUMP_DEFINE(alc);
static device_method_t alc_methods[] = {
/* Device interface. */
DEVMETHOD(device_probe, alc_probe),
@ -227,7 +231,7 @@ static device_method_t alc_methods[] = {
DEVMETHOD(miibus_writereg, alc_miibus_writereg),
DEVMETHOD(miibus_statchg, alc_miibus_statchg),
{ NULL, NULL }
DEVMETHOD_END
};
static driver_t alc_driver = {
@ -1651,6 +1655,9 @@ alc_attach(device_t dev)
goto fail;
}
/* Attach driver netdump methods. */
NETDUMP_SET(ifp, alc);
fail:
if (error != 0)
alc_detach(dev);
@ -2974,22 +2981,28 @@ alc_start_locked(struct ifnet *ifp)
ETHER_BPF_MTAP(ifp, m_head);
}
if (enq > 0) {
/* Sync descriptors. */
bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
/* Kick. Assume we're using normal Tx priority queue. */
if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
CSR_WRITE_2(sc, ALC_MBOX_TD_PRI0_PROD_IDX,
(uint16_t)sc->alc_cdata.alc_tx_prod);
else
CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX,
(sc->alc_cdata.alc_tx_prod <<
MBOX_TD_PROD_LO_IDX_SHIFT) &
MBOX_TD_PROD_LO_IDX_MASK);
/* Set a timeout in case the chip goes out to lunch. */
sc->alc_watchdog_timer = ALC_TX_TIMEOUT;
}
if (enq > 0)
alc_start_tx(sc);
}
static void
alc_start_tx(struct alc_softc *sc)
{
/* Sync descriptors. */
bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
/* Kick. Assume we're using normal Tx priority queue. */
if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
CSR_WRITE_2(sc, ALC_MBOX_TD_PRI0_PROD_IDX,
(uint16_t)sc->alc_cdata.alc_tx_prod);
else
CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX,
(sc->alc_cdata.alc_tx_prod <<
MBOX_TD_PROD_LO_IDX_SHIFT) &
MBOX_TD_PROD_LO_IDX_MASK);
/* Set a timeout in case the chip goes out to lunch. */
sc->alc_watchdog_timer = ALC_TX_TIMEOUT;
}
static void
@ -4642,3 +4655,54 @@ sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS)
return (sysctl_int_range(oidp, arg1, arg2, req,
ALC_IM_TIMER_MIN, ALC_IM_TIMER_MAX));
}
#ifdef NETDUMP
static void
alc_netdump_init(struct ifnet *ifp, int *nrxr, int *ncl, int *clsize)
{
struct alc_softc *sc;
sc = if_getsoftc(ifp);
KASSERT(sc->alc_buf_size <= MCLBYTES, ("incorrect cluster size"));
*nrxr = ALC_RX_RING_CNT;
*ncl = NETDUMP_MAX_IN_FLIGHT;
*clsize = MCLBYTES;
}
static void
alc_netdump_event(struct ifnet *ifp __unused, enum netdump_ev event __unused)
{
}
static int
alc_netdump_transmit(struct ifnet *ifp, struct mbuf *m)
{
struct alc_softc *sc;
int error;
sc = if_getsoftc(ifp);
if ((if_getdrvflags(ifp) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING)
return (EBUSY);
error = alc_encap(sc, &m);
if (error == 0)
alc_start_tx(sc);
return (error);
}
static int
alc_netdump_poll(struct ifnet *ifp, int count)
{
struct alc_softc *sc;
sc = if_getsoftc(ifp);
if ((if_getdrvflags(ifp) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING)
return (EBUSY);
alc_txeof(sc);
return (alc_rxintr(sc, count));
}
#endif /* NETDUMP */