diff options
Diffstat (limited to 'sys/dev/usb/usb_ethersubr.c')
| -rw-r--r-- | sys/dev/usb/usb_ethersubr.c | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/sys/dev/usb/usb_ethersubr.c b/sys/dev/usb/usb_ethersubr.c deleted file mode 100644 index d0a3b83..0000000 --- a/sys/dev/usb/usb_ethersubr.c +++ /dev/null @@ -1,283 +0,0 @@ -/*- - * Copyright (c) 1997, 1998, 1999, 2000 - * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Bill Paul. - * 4. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -/* - * Callbacks in the USB code operate at splusb() (actually splbio() - * in FreeBSD). However adding packets to the input queues has to be - * done at splimp(). It is conceivable that this arrangement could - * trigger a condition where the splimp() is ignored and the input - * queues could get trampled in spite of our best effors to prevent - * it. To work around this, we implement a special input queue for - * USB ethernet adapter drivers. Rather than passing the frames directly - * to ether_input(), we pass them here, then schedule a soft interrupt - * to hand them to ether_input() later, outside of the USB interrupt - * context. - * - * It's questional as to whether this code should be expanded to - * handle other kinds of devices, or handle USB transfer callbacks - * in general. Right now, I need USB network interfaces to work - * properly. - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/sockio.h> -#include <sys/mbuf.h> -#include <sys/malloc.h> -#include <sys/socket.h> -#include <sys/taskqueue.h> - -#include <net/if.h> -#include <net/if_types.h> -#include <net/if_arp.h> -#include <net/ethernet.h> -#include <net/netisr.h> -#include <net/bpf.h> - -#include <dev/usb/usb.h> -#include <dev/usb/usb_ethersubr.h> - -static struct ifqueue usbq_rx; -static struct ifqueue usbq_tx; -static int mtx_inited = 0; - -static void usbintr (void); - -static void -usbintr(void) -{ - struct mbuf *m; - struct usb_qdat *q; - struct ifnet *ifp; - - mtx_lock(&Giant); - - /* Check the RX queue */ - while(1) { - IF_DEQUEUE(&usbq_rx, m); - if (m == NULL) - break; - q = (struct usb_qdat *)m->m_pkthdr.rcvif; - ifp = q->ifp; - m->m_pkthdr.rcvif = ifp; - (*ifp->if_input)(ifp, m); - - /* Re-arm the receiver */ - (*q->if_rxstart)(ifp); - if (ifp->if_snd.ifq_head != NULL) - (*ifp->if_start)(ifp); - } - - /* Check the TX queue */ - while(1) { - IF_DEQUEUE(&usbq_tx, m); - if (m == NULL) - break; - ifp = m->m_pkthdr.rcvif; - m_freem(m); - if (ifp->if_snd.ifq_head != NULL) - (*ifp->if_start)(ifp); - } - - mtx_unlock(&Giant); - - return; -} - -void -usb_register_netisr(void) -{ - if (mtx_inited) - return; - netisr_register(NETISR_USB, (netisr_t *)usbintr, NULL, - NETISR_FORCEQUEUE); - mtx_init(&usbq_tx.ifq_mtx, "usbq_tx_mtx", NULL, MTX_DEF); - mtx_init(&usbq_rx.ifq_mtx, "usbq_rx_mtx", NULL, MTX_DEF); - mtx_inited++; - return; -} - -/* - * Must be called at splusb() (actually splbio()). This should be - * the case when called from a transfer callback routine. - */ -void -usb_ether_input(m) - struct mbuf *m; -{ - IF_ENQUEUE(&usbq_rx, m); - schednetisr(NETISR_USB); - - return; -} - -void -usb_tx_done(m) - struct mbuf *m; -{ - IF_ENQUEUE(&usbq_tx, m); - schednetisr(NETISR_USB); - - return; -} - -struct mbuf * -usb_ether_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); -} - -int -usb_ether_rx_list_init(void *sc, struct ue_cdata *cd, - usbd_device_handle ue_udev) -{ - struct ue_chain *c; - int i; - - for (i = 0; i < UE_RX_LIST_CNT; i++) { - c = &cd->ue_rx_chain[i]; - c->ue_sc = sc; - c->ue_idx = i; - c->ue_mbuf = usb_ether_newbuf(); - if (c->ue_mbuf == NULL) - return (ENOBUFS); - if (c->ue_xfer == NULL) { - c->ue_xfer = usbd_alloc_xfer(ue_udev); - if (c->ue_xfer == NULL) - return (ENOBUFS); - c->ue_buf = usbd_alloc_buffer(c->ue_xfer, UE_BUFSZ); - if (c->ue_buf == NULL) - return (ENOBUFS); - } - } - - return (0); -} - -int -usb_ether_tx_list_init(void *sc, struct ue_cdata *cd, - usbd_device_handle ue_udev) -{ - struct ue_chain *c; - int i; - - for (i = 0; i < UE_TX_LIST_CNT; i++) { - c = &cd->ue_tx_chain[i]; - c->ue_sc = sc; - c->ue_idx = i; - c->ue_mbuf = NULL; - if (c->ue_xfer == NULL) { - c->ue_xfer = usbd_alloc_xfer(ue_udev); - if (c->ue_xfer == NULL) - return (ENOBUFS); - c->ue_buf = usbd_alloc_buffer(c->ue_xfer, UE_BUFSZ); - if (c->ue_buf == NULL) - return (ENOBUFS); - } - } - - return (0); -} - -void -usb_ether_rx_list_free(struct ue_cdata *cd) -{ - int i; - - for (i = 0; i < UE_RX_LIST_CNT; i++) { - if (cd->ue_rx_chain[i].ue_mbuf != NULL) { - m_freem(cd->ue_rx_chain[i].ue_mbuf); - cd->ue_rx_chain[i].ue_mbuf = NULL; - } - if (cd->ue_rx_chain[i].ue_xfer != NULL) { - usbd_free_xfer(cd->ue_rx_chain[i].ue_xfer); - cd->ue_rx_chain[i].ue_xfer = NULL; - } - } -} - -void -usb_ether_tx_list_free(struct ue_cdata *cd) -{ - int i; - - for (i = 0; i < UE_RX_LIST_CNT; i++) { - if (cd->ue_tx_chain[i].ue_mbuf != NULL) { - m_freem(cd->ue_tx_chain[i].ue_mbuf); - cd->ue_tx_chain[i].ue_mbuf = NULL; - } - if (cd->ue_tx_chain[i].ue_xfer != NULL) { - usbd_free_xfer(cd->ue_tx_chain[i].ue_xfer); - cd->ue_tx_chain[i].ue_xfer = NULL; - } - } -} - -void -usb_ether_task_init(device_t dev, int flags, struct usb_taskqueue *tq) -{ - - /* nothing for now. */ -} - -void -usb_ether_task_enqueue(struct usb_taskqueue *tq, struct task *task) -{ - - taskqueue_enqueue(taskqueue_thread, task); -} - -void -usb_ether_task_drain(struct usb_taskqueue *tq, struct task *task) -{ - - taskqueue_drain(taskqueue_thread, task); -} - -void -usb_ether_task_destroy(struct usb_taskqueue *tq) -{ - - /* nothing for now */ - -} |
