Date: Mon, 15 Jan 2018 00:55:35 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r327984 - user/markj/netdump/sys/dev/alc Message-ID: <201801150055.w0F0tZxb047039@repo.freebsd.org>
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Author: markj Date: Mon Jan 15 00:55:34 2018 New Revision: 327984 URL: https://svnweb.freebsd.org/changeset/base/327984 Log: Add netdump support to alc(4). Tested with an AR8162 adapter. Modified: user/markj/netdump/sys/dev/alc/if_alc.c Modified: user/markj/netdump/sys/dev/alc/if_alc.c ============================================================================== --- user/markj/netdump/sys/dev/alc/if_alc.c Mon Jan 15 00:53:40 2018 (r327983) +++ user/markj/netdump/sys/dev/alc/if_alc.c Mon Jan 15 00:55:34 2018 (r327984) @@ -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, 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); @@ -2974,25 +2981,31 @@ 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 alc_watchdog(struct alc_softc *sc) { struct ifnet *ifp; @@ -4642,3 +4655,61 @@ 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 *nmbufp, int *nclustp) +{ + + *nmbufp += ALC_RX_RING_CNT; + *nclustp += ALC_RX_RING_CNT; +} + +static void +alc_netdump_event(struct ifnet *ifp, enum netdump_ev event) +{ + struct alc_softc *sc; + + sc = ifp->if_softc; + switch (event) { + case NETDUMP_START: + sc->alc_buf_size = imin(sc->alc_buf_size, MCLBYTES); + break; + default: + break; + } +} + +static int +alc_netdump_transmit(struct ifnet *ifp, struct mbuf *m) +{ + struct alc_softc *sc; + int error; + + sc = ifp->if_softc; + + 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 = ifp->if_softc; + + 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 */
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