Hello,

As one of patch series it's for patching axe(4) without dependency of
uether module.  The change log would be almost same like the previous
patch log.

regards,
Weongyo Jeong

Index: if_axereg.h
===================================================================
--- if_axereg.h (revision 214604)
+++ if_axereg.h (working copy)
@@ -185,7 +185,7 @@ struct axe_sframe_hdr {
        uint16_t ilen;
 } __packed;
 
-#define        GET_MII(sc)             uether_getmii(&(sc)->sc_ue)
+#define        GET_MII(sc)             (device_get_softc(sc->sc_miibus))
 
 /* The interrupt endpoint is currently unused by the ASIX part. */
 enum {
@@ -195,20 +195,35 @@ enum {
 };
 
 struct axe_softc {
-       struct usb_ether        sc_ue;
+       struct ifnet            *sc_ifp;
+       device_t                sc_dev;
+       device_t                sc_miibus;
+       struct usb_device       *sc_udev; /* used by uether_do_request() */
        struct mtx              sc_mtx;
-       struct usb_xfer *sc_xfer[AXE_N_TRANSFER];
+       struct sx               sc_sx;
+       struct usb_xfer         *sc_xfer[AXE_N_TRANSFER];
+
+       /* ethernet address from eeprom */
+       uint8_t                 sc_eaddr[ETHER_ADDR_LEN];
+       struct ifqueue          sc_rxq;
+
+       struct sleepout         sc_sleepout;
+       struct sleepout_task    sc_watchdog;
+       struct task             sc_setmulti;
+       struct task             sc_setpromisc;
+
+       int                     sc_unit;
        int                     sc_phyno;
-
        int                     sc_flags;
 #define        AXE_FLAG_LINK           0x0001
 #define        AXE_FLAG_772            0x1000  /* AX88772 */
 #define        AXE_FLAG_178            0x2000  /* AX88178 */
-
        uint8_t                 sc_ipgs[3];
        uint8_t                 sc_phyaddrs[2];
 };
 
+#define        AXE_SXLOCK(_sc)         sx_xlock(&(_sc)->sc_sx)
+#define        AXE_SXUNLOCK(_sc)       sx_xunlock(&(_sc)->sc_sx)
 #define        AXE_LOCK(_sc)           mtx_lock(&(_sc)->sc_mtx)
 #define        AXE_UNLOCK(_sc)         mtx_unlock(&(_sc)->sc_mtx)
 #define        AXE_LOCK_ASSERT(_sc, t) mtx_assert(&(_sc)->sc_mtx, t)
Index: if_axe.c
===================================================================
--- if_axe.c    (revision 214604)
+++ if_axe.c    (working copy)
@@ -89,6 +89,8 @@ __FBSDID("$FreeBSD$");
 #include <sys/lock.h>
 #include <sys/mutex.h>
 #include <sys/condvar.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
 #include <sys/sysctl.h>
 #include <sys/sx.h>
 #include <sys/unistd.h>
@@ -96,6 +98,19 @@ __FBSDID("$FreeBSD$");
 #include <sys/malloc.h>
 #include <sys/priv.h>
 
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+#include <net/if_types.h>
+#include <net/bpf.h>
+#include <net/ethernet.h>
+
+#include "miibus_if.h"
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+
 #include <dev/usb/usb.h>
 #include <dev/usb/usbdi.h>
 #include <dev/usb/usbdi_util.h>
@@ -104,6 +119,7 @@ __FBSDID("$FreeBSD$");
 #define        USB_DEBUG_VAR axe_debug
 #include <dev/usb/usb_debug.h>
 #include <dev/usb/usb_process.h>
+#include <dev/usb/usb_sleepout.h>
 
 #include <dev/usb/net/usb_ethernet.h>
 #include <dev/usb/net/if_axereg.h>
@@ -178,23 +194,26 @@ static miibus_readreg_t axe_miibus_readreg;
 static miibus_writereg_t axe_miibus_writereg;
 static miibus_statchg_t axe_miibus_statchg;
 
-static uether_fn_t axe_attach_post;
-static uether_fn_t axe_init;
-static uether_fn_t axe_stop;
-static uether_fn_t axe_start;
-static uether_fn_t axe_tick;
-static uether_fn_t axe_setmulti;
-static uether_fn_t axe_setpromisc;
-
 static int     axe_ifmedia_upd(struct ifnet *);
 static void    axe_ifmedia_sts(struct ifnet *, struct ifmediareq *);
 static int     axe_cmd(struct axe_softc *, int, int, int, void *);
 static void    axe_ax88178_init(struct axe_softc *);
 static void    axe_ax88772_init(struct axe_softc *);
 static int     axe_get_phyno(struct axe_softc *, int);
+static void    axe_watchdog(void *);
+static void    axe_init(void *);
+static void    axe_init_locked(struct axe_softc *);
+static int     axe_ioctl(struct ifnet *, u_long, caddr_t);
+static void    axe_start(struct ifnet *);
+static void    axe_start_locked(struct ifnet *);
+static void    axe_tick(struct axe_softc *);
+static void    axe_stop(struct axe_softc *);
+static void    axe_stop_locked(struct axe_softc *);
+static void    axe_setmulti_locked(struct axe_softc *);
+static void    axe_setpromisc(void *, int);
+static void    axe_setpromisc_locked(struct axe_softc *);
 
 static const struct usb_config axe_config[AXE_N_TRANSFER] = {
-
        [AXE_BULK_DT_WR] = {
                .type = UE_BULK,
                .endpoint = UE_ADDR_ANY,
@@ -250,18 +269,14 @@ MODULE_DEPEND(axe, ether, 1, 1, 1);
 MODULE_DEPEND(axe, miibus, 1, 1, 1);
 MODULE_VERSION(axe, 1);
 
-static const struct usb_ether_methods axe_ue_methods = {
-       .ue_attach_post = axe_attach_post,
-       .ue_start = axe_start,
-       .ue_init = axe_init,
-       .ue_stop = axe_stop,
-       .ue_tick = axe_tick,
-       .ue_setmulti = axe_setmulti,
-       .ue_setpromisc = axe_setpromisc,
-       .ue_mii_upd = axe_ifmedia_upd,
-       .ue_mii_sts = axe_ifmedia_sts,
-};
+static uint8_t
+axe_pause(struct axe_softc *sc, unsigned int _ticks)
+{
 
+       usb_pause_mtx(&sc->sc_mtx, _ticks);
+       return (0);
+}
+
 static int
 axe_cmd(struct axe_softc *sc, int cmd, int index, int val, void *buf)
 {
@@ -278,7 +293,8 @@ axe_cmd(struct axe_softc *sc, int cmd, int index,
        USETW(req.wIndex, index);
        USETW(req.wLength, AXE_CMD_LEN(cmd));
 
-       err = uether_do_request(&sc->sc_ue, &req, buf, 1000);
+       err = usbd_do_request_flags(sc->sc_udev, &sc->sc_mtx, &req, buf, 0,
+           NULL, 1000);
 
        return (err);
 }
@@ -354,7 +370,7 @@ axe_miibus_statchg(device_t dev)
        if (!locked)
                AXE_LOCK(sc);
 
-       ifp = uether_getifp(&sc->sc_ue);
+       ifp = sc->sc_ifp;
        if (mii == NULL || ifp == NULL ||
            (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
                goto done;
@@ -418,8 +434,7 @@ axe_ifmedia_upd(struct ifnet *ifp)
        struct mii_data *mii = GET_MII(sc);
        int error;
 
-       AXE_LOCK_ASSERT(sc, MA_OWNED);
-
+       AXE_LOCK(sc);
        if (mii->mii_instance) {
                struct mii_softc *miisc;
 
@@ -427,6 +442,7 @@ axe_ifmedia_upd(struct ifnet *ifp)
                        mii_phy_reset(miisc);
        }
        error = mii_mediachg(mii);
+       AXE_UNLOCK(sc);
        return (error);
 }
 
@@ -447,10 +463,19 @@ axe_ifmedia_sts(struct ifnet *ifp, struct ifmediar
 }
 
 static void
-axe_setmulti(struct usb_ether *ue)
+axe_setmulti(void *arg, int npending)
 {
-       struct axe_softc *sc = uether_getsc(ue);
-       struct ifnet *ifp = uether_getifp(ue);
+       struct axe_softc *sc = arg;
+
+       AXE_LOCK(sc);
+       axe_setmulti_locked(sc);
+       AXE_UNLOCK(sc);
+}
+
+static void
+axe_setmulti_locked(struct axe_softc *sc)
+{
+       struct ifnet *ifp = sc->sc_ifp;
        struct ifmultiaddr *ifma;
        uint32_t h = 0;
        uint16_t rxmode;
@@ -509,17 +534,15 @@ axe_get_phyno(struct axe_softc *sc, int sel)
 
 #define        AXE_GPIO_WRITE(x, y)    do {                            \
        axe_cmd(sc, AXE_CMD_WRITE_GPIO, 0, (x), NULL);          \
-       uether_pause(ue, (y));                                  \
+       axe_pause(sc, (y));                                     \
 } while (0)
 
 static void
 axe_ax88178_init(struct axe_softc *sc)
 {
-       struct usb_ether *ue;
        int gpio0, phymode;
        uint16_t eeprom, val;
 
-       ue = &sc->sc_ue;
        axe_cmd(sc, AXE_CMD_SROM_WR_ENABLE, 0, 0, NULL);
        /* XXX magic */
        axe_cmd(sc, AXE_CMD_SROM_READ, 0, 0x0017, &eeprom);
@@ -536,7 +559,7 @@ axe_ax88178_init(struct axe_softc *sc)
        }
 
        if (bootverbose)
-               device_printf(sc->sc_ue.ue_dev, "EEPROM data : 0x%04x\n",
+               device_printf(sc->sc_dev, "EEPROM data : 0x%04x\n",
                    eeprom);
        /* Program GPIOs depending on PHY hardware. */
        switch (phymode) {
@@ -580,15 +603,15 @@ axe_ax88178_init(struct axe_softc *sc)
                AXE_GPIO_WRITE(val | AXE_GPIO2_EN, hz / 4);
                AXE_GPIO_WRITE(val | AXE_GPIO2 | AXE_GPIO2_EN, hz / 32);
                if (phymode == AXE_PHY_MODE_REALTEK_8211CL) {
-                       axe_miibus_writereg(ue->ue_dev, sc->sc_phyno,
+                       axe_miibus_writereg(sc->sc_dev, sc->sc_phyno,
                            0x1F, 0x0005);
-                       axe_miibus_writereg(ue->ue_dev, sc->sc_phyno,
+                       axe_miibus_writereg(sc->sc_dev, sc->sc_phyno,
                            0x0C, 0x0000);
-                       val = axe_miibus_readreg(ue->ue_dev, sc->sc_phyno,
+                       val = axe_miibus_readreg(sc->sc_dev, sc->sc_phyno,
                            0x0001);
-                       axe_miibus_writereg(ue->ue_dev, sc->sc_phyno,
+                       axe_miibus_writereg(sc->sc_dev, sc->sc_phyno,
                            0x01, val | 0x0080);
-                       axe_miibus_writereg(ue->ue_dev, sc->sc_phyno,
+                       axe_miibus_writereg(sc->sc_dev, sc->sc_phyno,
                            0x1F, 0x0000);
                }
                break;
@@ -599,14 +622,14 @@ axe_ax88178_init(struct axe_softc *sc)
 
        /* soft reset */
        axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0, AXE_SW_RESET_CLEAR, NULL);
-       uether_pause(ue, hz / 4);
+       axe_pause(sc, hz / 4);
 
        axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0,
            AXE_SW_RESET_PRL | AXE_178_RESET_MAGIC, NULL);
-       uether_pause(ue, hz / 4);
+       axe_pause(sc, hz / 4);
        /* Enable MII/GMII/RGMII interface to work with external PHY. */
        axe_cmd(sc, AXE_CMD_SW_PHY_SELECT, 0, 0, NULL);
-       uether_pause(ue, hz / 4);
+       axe_pause(sc, hz / 4);
 
        axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, 0, NULL);
 }
@@ -615,23 +638,24 @@ axe_ax88178_init(struct axe_softc *sc)
 static void
 axe_ax88772_init(struct axe_softc *sc)
 {
+
        axe_cmd(sc, AXE_CMD_WRITE_GPIO, 0, 0x00b0, NULL);
-       uether_pause(&sc->sc_ue, hz / 16);
+       axe_pause(sc, hz / 16);
 
        if (sc->sc_phyno == AXE_772_PHY_NO_EPHY) {
                /* ask for the embedded PHY */
                axe_cmd(sc, AXE_CMD_SW_PHY_SELECT, 0, 0x01, NULL);
-               uether_pause(&sc->sc_ue, hz / 64);
+               axe_pause(sc, hz / 64);
 
                /* power down and reset state, pin reset state */
                axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0,
                    AXE_SW_RESET_CLEAR, NULL);
-               uether_pause(&sc->sc_ue, hz / 16);
+               axe_pause(sc, hz / 16);
 
                /* power down/reset state, pin operating state */
                axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0,
                    AXE_SW_RESET_IPPD | AXE_SW_RESET_PRL, NULL);
-               uether_pause(&sc->sc_ue, hz / 4);
+               axe_pause(sc, hz / 4);
 
                /* power up, reset */
                axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0, AXE_SW_RESET_PRL, NULL);
@@ -642,14 +666,14 @@ axe_ax88772_init(struct axe_softc *sc)
        } else {
                /* ask for external PHY */
                axe_cmd(sc, AXE_CMD_SW_PHY_SELECT, 0, 0x00, NULL);
-               uether_pause(&sc->sc_ue, hz / 64);
+               axe_pause(sc, hz / 64);
 
                /* power down internal PHY */
                axe_cmd(sc, AXE_CMD_SW_RESET_REG, 0,
                    AXE_SW_RESET_IPPD | AXE_SW_RESET_PRL, NULL);
        }
 
-       uether_pause(&sc->sc_ue, hz / 4);
+       axe_pause(sc, hz / 4);
        axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, 0, NULL);
 }
 
@@ -659,34 +683,33 @@ axe_reset(struct axe_softc *sc)
        struct usb_config_descriptor *cd;
        usb_error_t err;
 
-       cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev);
+       cd = usbd_get_config_descriptor(sc->sc_udev);
 
-       err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx,
+       err = usbd_req_set_config(sc->sc_udev, &sc->sc_mtx,
            cd->bConfigurationValue);
        if (err)
                DPRINTF("reset failed (ignored)\n");
 
        /* Wait a little while for the chip to get its brains in order. */
-       uether_pause(&sc->sc_ue, hz / 100);
+       axe_pause(sc, hz / 100);
 }
 
 static void
-axe_attach_post(struct usb_ether *ue)
+axe_attach_post(struct axe_softc *sc)
 {
-       struct axe_softc *sc = uether_getsc(ue);
 
        /*
         * Load PHY indexes first. Needed by axe_xxx_init().
         */
        axe_cmd(sc, AXE_CMD_READ_PHYID, 0, 0, sc->sc_phyaddrs);
        if (bootverbose)
-               device_printf(sc->sc_ue.ue_dev, "PHYADDR 0x%02x:0x%02x\n",
+               device_printf(sc->sc_dev, "PHYADDR 0x%02x:0x%02x\n",
                    sc->sc_phyaddrs[0], sc->sc_phyaddrs[1]);
        sc->sc_phyno = axe_get_phyno(sc, AXE_PHY_SEL_PRI);
        if (sc->sc_phyno == -1)
                sc->sc_phyno = axe_get_phyno(sc, AXE_PHY_SEL_SEC);
        if (sc->sc_phyno == -1) {
-               device_printf(sc->sc_ue.ue_dev,
+               device_printf(sc->sc_dev,
                    "no valid PHY address found, assuming PHY address 0\n");
                sc->sc_phyno = 0;
        }
@@ -700,9 +723,9 @@ static void
         * Get station address.
         */
        if (sc->sc_flags & (AXE_FLAG_178 | AXE_FLAG_772))
-               axe_cmd(sc, AXE_178_CMD_READ_NODEID, 0, 0, ue->ue_eaddr);
+               axe_cmd(sc, AXE_178_CMD_READ_NODEID, 0, 0, sc->sc_eaddr);
        else
-               axe_cmd(sc, AXE_172_CMD_READ_NODEID, 0, 0, ue->ue_eaddr);
+               axe_cmd(sc, AXE_172_CMD_READ_NODEID, 0, 0, sc->sc_eaddr);
 
        /*
         * Fetch IPG values.
@@ -728,6 +751,19 @@ axe_probe(device_t dev)
        return (usbd_lookup_id_by_uaa(axe_devs, sizeof(axe_devs), uaa));
 }
 
+static void
+axe_watchdog(void *arg)
+{
+       struct axe_softc *sc = arg;
+       struct ifnet *ifp = sc->sc_ifp;
+
+       if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+               return;
+
+       axe_tick(sc);
+       sleepout_reset(&sc->sc_watchdog, hz, axe_watchdog, sc);
+}
+
 /*
  * Attach the interface. Allocate softc structures, do ifmedia
  * setup and ethernet/BPF attach.
@@ -737,15 +773,23 @@ axe_attach(device_t dev)
 {
        struct usb_attach_arg *uaa = device_get_ivars(dev);
        struct axe_softc *sc = device_get_softc(dev);
-       struct usb_ether *ue = &sc->sc_ue;
+       struct ifnet *ifp;
        uint8_t iface_index;
        int error;
 
        sc->sc_flags = USB_GET_DRIVER_INFO(uaa);
+       sc->sc_dev = dev;
+       sc->sc_udev = uaa->device;
+       sc->sc_unit = uether_alloc_unr();
 
        device_set_usb_desc(dev);
 
        mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
+       sx_init(&sc->sc_sx, "axe sxlock");
+       sleepout_create(&sc->sc_sleepout, "axe sleepout");
+       sleepout_init_mtx(&sc->sc_sleepout, &sc->sc_watchdog, &sc->sc_mtx, 0);
+       TASK_INIT(&sc->sc_setmulti, 0, axe_setmulti, sc);
+       TASK_INIT(&sc->sc_setpromisc, 0, axe_setpromisc, sc);
 
        iface_index = AXE_IFACE_IDX;
        error = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
@@ -755,19 +799,39 @@ axe_attach(device_t dev)
                goto detach;
        }
 
-       ue->ue_sc = sc;
-       ue->ue_dev = dev;
-       ue->ue_udev = uaa->device;
-       ue->ue_mtx = &sc->sc_mtx;
-       ue->ue_methods = &axe_ue_methods;
+       AXE_LOCK(sc);
+       axe_attach_post(sc);
+       AXE_UNLOCK(sc);
 
-       error = uether_ifattach(ue);
-       if (error) {
-               device_printf(dev, "could not attach interface\n");
+       sc->sc_ifp = ifp = if_alloc(IFT_ETHER);
+       if (ifp == NULL) {
+               device_printf(sc->sc_dev, "could not allocate ifnet\n");
                goto detach;
        }
-       return (0);                     /* success */
 
+       ifp->if_softc = sc;
+       if_initname(ifp, "ue", sc->sc_unit);
+       ifp->if_mtu = ETHERMTU;
+       ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
+       ifp->if_ioctl = axe_ioctl;
+       ifp->if_start = axe_start;
+       ifp->if_init = axe_init;
+       IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
+       ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
+       IFQ_SET_READY(&ifp->if_snd);
+
+       error = mii_attach(sc->sc_dev, &sc->sc_miibus, ifp,
+           axe_ifmedia_upd, axe_ifmedia_sts,
+           BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 0);
+       if (error) {
+               device_printf(sc->sc_dev, "MII without any PHY\n");
+               goto error2;
+       }
+
+       if_printf(ifp, "<USB Ethernet> on %s\n",
+           device_get_nameunit(sc->sc_dev));
+       ether_ifattach(ifp, sc->sc_eaddr);
+       return (0);
 detach:
        axe_detach(dev);
        return (ENXIO);                 /* failure */
@@ -777,15 +841,96 @@ static int
 axe_detach(device_t dev)
 {
        struct axe_softc *sc = device_get_softc(dev);
-       struct usb_ether *ue = &sc->sc_ue;
+       struct ifnet *ifp = sc->sc_ifp;
 
+       sleepout_drain(&sc->sc_watchdog);
+       SLEEPOUT_DRAINTASK(&sc->sc_sleepout, &sc->sc_setpromisc);
+       SLEEPOUT_DRAINTASK(&sc->sc_sleepout, &sc->sc_setmulti);
        usbd_transfer_unsetup(sc->sc_xfer, AXE_N_TRANSFER);
-       uether_ifdetach(ue);
+
+       if (sc->sc_miibus != NULL)
+               device_delete_child(sc->sc_dev, sc->sc_miibus);
+       if (ifp != NULL) {
+               AXE_LOCK(sc);
+               ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
+               AXE_UNLOCK(sc);
+               ether_ifdetach(ifp);
+               if_free(ifp);
+       }
+       sleepout_free(&sc->sc_sleepout);
+       sx_destroy(&sc->sc_sx);
        mtx_destroy(&sc->sc_mtx);
+       uether_free_unr(sc->sc_unit);
 
        return (0);
 }
 
+static void
+axe_rxflush(struct axe_softc *sc)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       struct mbuf *m;
+
+       AXE_LOCK_ASSERT(sc, MA_OWNED);
+
+       for (;;) {
+               _IF_DEQUEUE(&sc->sc_rxq, m);
+               if (m == NULL)
+                       break;
+
+               /*
+                * The USB xfer has been resubmitted so its safe to unlock now.
+                */
+               AXE_UNLOCK(sc);
+               ifp->if_input(ifp, m);
+               AXE_LOCK(sc);
+       }
+}
+
+static struct mbuf *
+axe_newbuf(void)
+{
+       struct mbuf *m_new;
+
+       m_new = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
+       if (m_new == NULL)
+               return (NULL);
+       m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
+
+       m_adj(m_new, ETHER_ALIGN);
+       return (m_new);
+}
+
+static int
+axe_rxbuf(struct axe_softc *sc, struct usb_page_cache *pc, 
+    unsigned int offset, unsigned int len)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+       struct mbuf *m;
+
+       AXE_LOCK_ASSERT(sc, MA_OWNED);
+
+       if (len < ETHER_HDR_LEN || len > MCLBYTES - ETHER_ALIGN)
+               return (1);
+
+       m = axe_newbuf();
+       if (m == NULL) {
+               ifp->if_ierrors++;
+               return (ENOMEM);
+       }
+
+       usbd_copy_out(pc, offset, mtod(m, uint8_t *), len);
+
+       /* finalize mbuf */
+       ifp->if_ipackets++;
+       m->m_pkthdr.rcvif = ifp;
+       m->m_pkthdr.len = m->m_len = len;
+
+       /* enqueue for later when the lock can be released */
+       _IF_ENQUEUE(&sc->sc_rxq, m);
+       return (0);
+}
+
 #if (AXE_BULK_BUF_SIZE >= 0x10000)
 #error "Please update axe_bulk_read_callback()!"
 #endif
@@ -794,8 +939,7 @@ static void
 axe_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
 {
        struct axe_softc *sc = usbd_xfer_softc(xfer);
-       struct usb_ether *ue = &sc->sc_ue;
-       struct ifnet *ifp = uether_getifp(ue);
+       struct ifnet *ifp = sc->sc_ifp;
        struct axe_sframe_hdr hdr;
        struct usb_page_cache *pc;
        int err, pos, len;
@@ -832,24 +976,22 @@ axe_bulk_read_callback(struct usb_xfer *xfer, usb_
                                        err = EINVAL;
                                        break;
                                }
-                               uether_rxbuf(ue, pc, pos, len);
+                               err = axe_rxbuf(sc, pc, pos, len);
 
                                pos += len + (len % 2);
                        }
                } else
-                       uether_rxbuf(ue, pc, 0, actlen);
+                       err = axe_rxbuf(sc, pc, 0, actlen);
 
                if (err != 0)
                        ifp->if_ierrors++;
-
                /* FALLTHROUGH */
        case USB_ST_SETUP:
 tr_setup:
                usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
                usbd_transfer_submit(xfer);
-               uether_rxflush(ue);
+               axe_rxflush(sc);
                return;
-
        default:                        /* Error */
                DPRINTF("bulk read error, %s\n", usbd_errstr(error));
 
@@ -859,7 +1001,6 @@ tr_setup:
                        goto tr_setup;
                }
                return;
-
        }
 }
 
@@ -872,7 +1013,7 @@ axe_bulk_write_callback(struct usb_xfer *xfer, usb
 {
        struct axe_softc *sc = usbd_xfer_softc(xfer);
        struct axe_sframe_hdr hdr;
-       struct ifnet *ifp = uether_getifp(&sc->sc_ue);
+       struct ifnet *ifp = sc->sc_ifp;
        struct usb_page_cache *pc;
        struct mbuf *m;
        int pos;
@@ -896,7 +1037,6 @@ tr_setup:
                pc = usbd_xfer_get_frame(xfer, 0);
 
                while (1) {
-
                        IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
 
                        if (m == NULL) {
@@ -904,11 +1044,9 @@ tr_setup:
                                        break;  /* send out data */
                                return;
                        }
-                       if (m->m_pkthdr.len > MCLBYTES) {
+                       if (m->m_pkthdr.len > MCLBYTES)
                                m->m_pkthdr.len = MCLBYTES;
-                       }
                        if (sc->sc_flags & (AXE_FLAG_772 | AXE_FLAG_178)) {
-
                                hdr.len = htole16(m->m_pkthdr.len);
                                hdr.ilen = ~hdr.len;
 
@@ -961,7 +1099,6 @@ tr_setup:
                usbd_transfer_submit(xfer);
                ifp->if_drv_flags |= IFF_DRV_OACTIVE;
                return;
-
        default:                        /* Error */
                DPRINTFN(11, "transfer error, %s\n",
                    usbd_errstr(error));
@@ -975,31 +1112,41 @@ tr_setup:
                        goto tr_setup;
                }
                return;
-
        }
 }
 
 static void
-axe_tick(struct usb_ether *ue)
+axe_tick(struct axe_softc *sc)
 {
-       struct axe_softc *sc = uether_getsc(ue);
        struct mii_data *mii = GET_MII(sc);
 
        AXE_LOCK_ASSERT(sc, MA_OWNED);
 
        mii_tick(mii);
        if ((sc->sc_flags & AXE_FLAG_LINK) == 0) {
-               axe_miibus_statchg(ue->ue_dev);
+               axe_miibus_statchg(sc->sc_dev);
                if ((sc->sc_flags & AXE_FLAG_LINK) != 0)
-                       axe_start(ue);
+                       axe_start_locked(sc->sc_ifp);
        }
 }
 
 static void
-axe_start(struct usb_ether *ue)
+axe_start(struct ifnet *ifp)
 {
-       struct axe_softc *sc = uether_getsc(ue);
+       struct axe_softc *sc = ifp->if_softc;
 
+       AXE_LOCK(sc);
+       axe_start_locked(ifp);
+       AXE_UNLOCK(sc);
+}
+
+static void
+axe_start_locked(struct ifnet *ifp)
+{
+       struct axe_softc *sc = ifp->if_softc;
+
+       AXE_LOCK_ASSERT(sc, MA_OWNED);
+
        /*
         * start the USB transfers, if not already started:
         */
@@ -1008,16 +1155,27 @@ static void
 }
 
 static void
-axe_init(struct usb_ether *ue)
+axe_init(void *arg)
 {
-       struct axe_softc *sc = uether_getsc(ue);
-       struct ifnet *ifp = uether_getifp(ue);
+       struct axe_softc *sc = arg;
+
+       AXE_SXLOCK(sc);
+       AXE_LOCK(sc);
+       axe_init_locked(sc);
+       AXE_UNLOCK(sc);
+       AXE_SXUNLOCK(sc);
+}
+
+static void
+axe_init_locked(struct axe_softc *sc)
+{
+       struct ifnet *ifp = sc->sc_ifp;
        uint16_t rxmode;
 
        AXE_LOCK_ASSERT(sc, MA_OWNED);
 
        /* Cancel pending I/O */
-       axe_stop(ue);
+       axe_stop_locked(sc);
 
        /* Set MAC address. */
        if (sc->sc_flags & (AXE_FLAG_178 | AXE_FLAG_772))
@@ -1047,9 +1205,8 @@ static void
                 */
                rxmode |= AXE_178_RXCMD_MFB_16384;
 #endif
-       } else {
+       } else
                rxmode |= AXE_172_RXCMD_UNICAST;
-       }
 
        /* If we want promiscuous mode, set the allframes bit. */
        if (ifp->if_flags & IFF_PROMISC)
@@ -1061,44 +1218,65 @@ static void
        axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, rxmode, NULL);
 
        /* Load the multicast filter. */
-       axe_setmulti(ue);
+       axe_setmulti_locked(sc);
 
        usbd_xfer_set_stall(sc->sc_xfer[AXE_BULK_DT_WR]);
 
        ifp->if_drv_flags |= IFF_DRV_RUNNING;
-       axe_start(ue);
+       sleepout_reset(&sc->sc_watchdog, hz, axe_watchdog, sc);
+       axe_start_locked(sc->sc_ifp);
 }
 
 static void
-axe_setpromisc(struct usb_ether *ue)
+axe_setpromisc(void *arg, int npending)
 {
-       struct axe_softc *sc = uether_getsc(ue);
-       struct ifnet *ifp = uether_getifp(ue);
+       struct axe_softc *sc = arg;
+
+       AXE_LOCK(sc);
+       axe_setpromisc_locked(sc);
+       AXE_UNLOCK(sc);
+}
+
+static void
+axe_setpromisc_locked(struct axe_softc *sc)
+{
+       struct ifnet *ifp = sc->sc_ifp;
        uint16_t rxmode;
 
        axe_cmd(sc, AXE_CMD_RXCTL_READ, 0, 0, &rxmode);
 
        rxmode = le16toh(rxmode);
 
-       if (ifp->if_flags & IFF_PROMISC) {
+       if (ifp->if_flags & IFF_PROMISC)
                rxmode |= AXE_RXCMD_PROMISC;
-       } else {
+       else
                rxmode &= ~AXE_RXCMD_PROMISC;
-       }
 
        axe_cmd(sc, AXE_CMD_RXCTL_WRITE, 0, rxmode, NULL);
 
-       axe_setmulti(ue);
+       axe_setmulti_locked(sc);
 }
 
 static void
-axe_stop(struct usb_ether *ue)
+axe_stop(struct axe_softc *sc)
 {
-       struct axe_softc *sc = uether_getsc(ue);
-       struct ifnet *ifp = uether_getifp(ue);
 
+       AXE_SXLOCK(sc);
+       AXE_LOCK(sc);
+       axe_stop_locked(sc);
+       AXE_UNLOCK(sc);
+       AXE_SXUNLOCK(sc);
+}
+
+static void
+axe_stop_locked(struct axe_softc *sc)
+{
+       struct ifnet *ifp = sc->sc_ifp;
+
        AXE_LOCK_ASSERT(sc, MA_OWNED);
 
+       sleepout_stop(&sc->sc_watchdog);
+
        ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
        sc->sc_flags &= ~AXE_FLAG_LINK;
 
@@ -1110,3 +1288,46 @@ static void
 
        axe_reset(sc);
 }
+
+static int
+axe_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
+{
+       struct axe_softc *sc = ifp->if_softc;
+       struct ifreq *ifr = (struct ifreq *)data;
+       struct mii_data *mii = GET_MII(sc);
+       int error = 0, drv_flags, flags;
+
+       switch (command) {
+       case SIOCSIFFLAGS:
+               /* Avoids race and LOR between mutex and sx lock. */
+               AXE_LOCK(sc);
+               flags = ifp->if_flags;
+               drv_flags = ifp->if_drv_flags;
+               AXE_UNLOCK(sc);
+               /* device up and down is synchronous using sx(9) lock */
+               if (flags & IFF_UP) {
+                       if (drv_flags & IFF_DRV_RUNNING)
+                               SLEEPOUT_RUNTASK(&sc->sc_sleepout,
+                                   &sc->sc_setpromisc);
+                       else
+                               axe_init(sc);
+               } else
+                       axe_stop(sc);
+               break;
+       case SIOCADDMULTI:
+       case SIOCDELMULTI:
+               /* To avoid LOR by in_multi_mtx (netinet/in_mcast.c) */
+               if (ifp->if_flags & IFF_UP &&
+                   ifp->if_drv_flags & IFF_DRV_RUNNING)
+                       SLEEPOUT_RUNTASK(&sc->sc_sleepout, &sc->sc_setmulti);
+               break;
+       case SIOCGIFMEDIA:
+       case SIOCSIFMEDIA:
+               error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
+               break;
+       default:
+               error = ether_ioctl(ifp, command, data);
+               break;
+       }
+       return (error);
+}
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