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author | Josh Blum <josh@joshknows.com> | 2010-12-22 19:19:14 -0800 |
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committer | Josh Blum <josh@joshknows.com> | 2010-12-22 19:19:14 -0800 |
commit | 22ed61f97815856bf74cec25ae6bca88bfbe5f44 (patch) | |
tree | 7d87d49b46f9507ff10486097e6d79e4bee4cb81 /firmware/microblaze/lwip/lwip-1.3.1/src/netif/slipif.c | |
parent | 71fc99d006f2347a356c5339905593f64ff902ec (diff) | |
download | uhd-22ed61f97815856bf74cec25ae6bca88bfbe5f44.tar.gz uhd-22ed61f97815856bf74cec25ae6bca88bfbe5f44.tar.bz2 uhd-22ed61f97815856bf74cec25ae6bca88bfbe5f44.zip |
zpu: renamed the directory for the usrp2 fw to zpu to reflect the cpu type
Diffstat (limited to 'firmware/microblaze/lwip/lwip-1.3.1/src/netif/slipif.c')
-rw-r--r-- | firmware/microblaze/lwip/lwip-1.3.1/src/netif/slipif.c | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/firmware/microblaze/lwip/lwip-1.3.1/src/netif/slipif.c b/firmware/microblaze/lwip/lwip-1.3.1/src/netif/slipif.c deleted file mode 100644 index 6cb2db442..000000000 --- a/firmware/microblaze/lwip/lwip-1.3.1/src/netif/slipif.c +++ /dev/null @@ -1,279 +0,0 @@ -/** - * @file - * SLIP Interface - * - */ - -/* - * Copyright (c) 2001-2004 Swedish Institute of Computer Science. - * 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. Neither the name of the Institute nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 THE INSTITUTE OR CONTRIBUTORS 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. - * - * This file is built upon the file: src/arch/rtxc/netif/sioslip.c - * - * Author: Magnus Ivarsson <magnus.ivarsson(at)volvo.com> - */ - -/* - * This is an arch independent SLIP netif. The specific serial hooks must be - * provided by another file. They are sio_open, sio_recv and sio_send - */ - -#include "netif/slipif.h" -#include "lwip/opt.h" - -#if LWIP_HAVE_SLIPIF - -#include "lwip/def.h" -#include "lwip/pbuf.h" -#include "lwip/sys.h" -#include "lwip/stats.h" -#include "lwip/snmp.h" -#include "lwip/sio.h" - -#define SLIP_END 0300 /* 0xC0 */ -#define SLIP_ESC 0333 /* 0xDB */ -#define SLIP_ESC_END 0334 /* 0xDC */ -#define SLIP_ESC_ESC 0335 /* 0xDD */ - -#define MAX_SIZE 1500 - -/** - * Send a pbuf doing the necessary SLIP encapsulation - * - * Uses the serial layer's sio_send() - * - * @param netif the lwip network interface structure for this slipif - * @param p the pbuf chaing packet to send - * @param ipaddr the ip address to send the packet to (not used for slipif) - * @return always returns ERR_OK since the serial layer does not provide return values - */ -err_t -slipif_output(struct netif *netif, struct pbuf *p, struct ip_addr *ipaddr) -{ - struct pbuf *q; - u16_t i; - u8_t c; - - LWIP_ASSERT("netif != NULL", (netif != NULL)); - LWIP_ASSERT("netif->state != NULL", (netif->state != NULL)); - LWIP_ASSERT("p != NULL", (p != NULL)); - - LWIP_UNUSED_ARG(ipaddr); - - /* Send pbuf out on the serial I/O device. */ - sio_send(SLIP_END, netif->state); - - for (q = p; q != NULL; q = q->next) { - for (i = 0; i < q->len; i++) { - c = ((u8_t *)q->payload)[i]; - switch (c) { - case SLIP_END: - sio_send(SLIP_ESC, netif->state); - sio_send(SLIP_ESC_END, netif->state); - break; - case SLIP_ESC: - sio_send(SLIP_ESC, netif->state); - sio_send(SLIP_ESC_ESC, netif->state); - break; - default: - sio_send(c, netif->state); - break; - } - } - } - sio_send(SLIP_END, netif->state); - return ERR_OK; -} - -/** - * Handle the incoming SLIP stream character by character - * - * Poll the serial layer by calling sio_recv() - * - * @param netif the lwip network interface structure for this slipif - * @return The IP packet when SLIP_END is received - */ -static struct pbuf * -slipif_input(struct netif *netif) -{ - u8_t c; - /* q is the whole pbuf chain for a packet, p is the current pbuf in the chain */ - struct pbuf *p, *q; - u16_t recved; - u16_t i; - - LWIP_ASSERT("netif != NULL", (netif != NULL)); - LWIP_ASSERT("netif->state != NULL", (netif->state != NULL)); - - q = p = NULL; - recved = i = 0; - c = 0; - - while (1) { - c = sio_recv(netif->state); - switch (c) { - case SLIP_END: - if (recved > 0) { - /* Received whole packet. */ - /* Trim the pbuf to the size of the received packet. */ - pbuf_realloc(q, recved); - - LINK_STATS_INC(link.recv); - - LWIP_DEBUGF(SLIP_DEBUG, ("slipif: Got packet\n")); - return q; - } - break; - - case SLIP_ESC: - c = sio_recv(netif->state); - switch (c) { - case SLIP_ESC_END: - c = SLIP_END; - break; - case SLIP_ESC_ESC: - c = SLIP_ESC; - break; - } - /* FALLTHROUGH */ - - default: - /* byte received, packet not yet completely received */ - if (p == NULL) { - /* allocate a new pbuf */ - LWIP_DEBUGF(SLIP_DEBUG, ("slipif_input: alloc\n")); - p = pbuf_alloc(PBUF_LINK, PBUF_POOL_BUFSIZE, PBUF_POOL); - - if (p == NULL) { - LINK_STATS_INC(link.drop); - LWIP_DEBUGF(SLIP_DEBUG, ("slipif_input: no new pbuf! (DROP)\n")); - /* don't process any further since we got no pbuf to receive to */ - break; - } - - if (q != NULL) { - /* 'chain' the pbuf to the existing chain */ - pbuf_cat(q, p); - } else { - /* p is the first pbuf in the chain */ - q = p; - } - } - - /* this automatically drops bytes if > MAX_SIZE */ - if ((p != NULL) && (recved <= MAX_SIZE)) { - ((u8_t *)p->payload)[i] = c; - recved++; - i++; - if (i >= p->len) { - /* on to the next pbuf */ - i = 0; - if (p->next != NULL && p->next->len > 0) { - /* p is a chain, on to the next in the chain */ - p = p->next; - } else { - /* p is a single pbuf, set it to NULL so next time a new - * pbuf is allocated */ - p = NULL; - } - } - } - break; - } - } - return NULL; -} - -#if !NO_SYS -/** - * The SLIP input thread. - * - * Feed the IP layer with incoming packets - * - * @param nf the lwip network interface structure for this slipif - */ -static void -slipif_loop(void *nf) -{ - struct pbuf *p; - struct netif *netif = (struct netif *)nf; - - while (1) { - p = slipif_input(netif); - if (p != NULL) { - if (netif->input(p, netif) != ERR_OK) { - pbuf_free(p); - p = NULL; - } - } - } -} -#endif /* !NO_SYS */ - -/** - * SLIP netif initialization - * - * Call the arch specific sio_open and remember - * the opened device in the state field of the netif. - * - * @param netif the lwip network interface structure for this slipif - * @return ERR_OK if serial line could be opened, - * ERR_IF is serial line couldn't be opened - * - * @note netif->num must contain the number of the serial port to open - * (0 by default) - */ -err_t -slipif_init(struct netif *netif) -{ - - LWIP_DEBUGF(SLIP_DEBUG, ("slipif_init: netif->num=%"U16_F"\n", (u16_t)netif->num)); - - netif->name[0] = 's'; - netif->name[1] = 'l'; - netif->output = slipif_output; - netif->mtu = MAX_SIZE; - netif->flags = NETIF_FLAG_POINTTOPOINT; - - /* Try to open the serial port (netif->num contains the port number). */ - netif->state = sio_open(netif->num); - if (!netif->state) { - /* Opening the serial port failed. */ - return ERR_IF; - } - - /* initialize the snmp variables and counters inside the struct netif - * ifSpeed: no assumption can be made without knowing more about the - * serial line! - */ - NETIF_INIT_SNMP(netif, snmp_ifType_slip, 0); - - /* Create a thread to poll the serial line. */ - sys_thread_new(SLIPIF_THREAD_NAME, slipif_loop, netif, SLIPIF_THREAD_STACKSIZE, SLIPIF_THREAD_PRIO); - return ERR_OK; -} -#endif /* LWIP_HAVE_SLIPIF */ |