55d5c94943
don't need to supply one. MFC after: 2 weeks
365 lines
9.9 KiB
C
365 lines
9.9 KiB
C
/*-
|
|
* Copyright (c) 2000-2001 Benno Rice
|
|
* Copyright (c) 2007 Semihalf, Rafal Jaworowski <raj@semihalf.com>
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/if_ether.h>
|
|
#include <netinet/ip.h>
|
|
|
|
#include <stand.h>
|
|
#include <net.h>
|
|
#include <netif.h>
|
|
|
|
#include "api_public.h"
|
|
#include "glue.h"
|
|
#include "libuboot.h"
|
|
#include "dev_net.h"
|
|
|
|
static int net_probe(struct netif *, void *);
|
|
static int net_match(struct netif *, void *);
|
|
static void net_init(struct iodesc *, void *);
|
|
static ssize_t net_get(struct iodesc *, void **, time_t);
|
|
static ssize_t net_put(struct iodesc *, void *, size_t);
|
|
static void net_end(struct netif *);
|
|
|
|
extern struct netif_stats net_stats[];
|
|
|
|
struct netif_dif net_ifs[] = {
|
|
/* dif_unit dif_nsel dif_stats dif_private */
|
|
{ 0, 1, &net_stats[0], 0, },
|
|
};
|
|
|
|
struct netif_stats net_stats[nitems(net_ifs)];
|
|
|
|
struct netif_driver uboot_net = {
|
|
"uboot_eth", /* netif_bname */
|
|
net_match, /* netif_match */
|
|
net_probe, /* netif_probe */
|
|
net_init, /* netif_init */
|
|
net_get, /* netif_get */
|
|
net_put, /* netif_put */
|
|
net_end, /* netif_end */
|
|
net_ifs, /* netif_ifs */
|
|
nitems(net_ifs) /* netif_nifs */
|
|
};
|
|
|
|
struct uboot_softc {
|
|
uint32_t sc_pad;
|
|
uint8_t sc_rxbuf[ETHER_MAX_LEN];
|
|
uint8_t sc_txbuf[ETHER_MAX_LEN + PKTALIGN];
|
|
uint8_t *sc_txbufp;
|
|
int sc_handle; /* device handle for ub_dev_xxx */
|
|
};
|
|
|
|
static struct uboot_softc uboot_softc;
|
|
|
|
/*
|
|
* get_env_net_params()
|
|
*
|
|
* Attempt to obtain all the parms we need for netbooting from the U-Boot
|
|
* environment. If we fail to obtain the values it may still be possible to
|
|
* netboot; the net_dev code will attempt to get the values from bootp, rarp,
|
|
* and other such sources.
|
|
*
|
|
* If rootip.s_addr is non-zero net_dev assumes the required global variables
|
|
* are set and skips the bootp inquiry. For that reason, we don't set rootip
|
|
* until we've verified that we have at least the minimum required info.
|
|
*
|
|
* This is called from netif_init() which can result in it getting called
|
|
* multiple times, by design. The network code at higher layers zeroes out
|
|
* rootip when it closes a network interface, so if it gets opened again we have
|
|
* to obtain all this info again.
|
|
*/
|
|
static void
|
|
get_env_net_params()
|
|
{
|
|
char *envstr;
|
|
in_addr_t rootaddr, serveraddr;
|
|
|
|
/*
|
|
* Silently get out right away if we don't have rootpath, because none
|
|
* of the other info we obtain below is sufficient to boot without it.
|
|
*
|
|
* If we do have rootpath, copy it into the global var and also set
|
|
* dhcp.root-path in the env. If we don't get all the other info from
|
|
* the u-boot env below, we will still try dhcp/bootp, but the server-
|
|
* provided path will not replace the user-provided value we set here.
|
|
*/
|
|
if ((envstr = ub_env_get("rootpath")) == NULL)
|
|
return;
|
|
strlcpy(rootpath, envstr, sizeof(rootpath));
|
|
setenv("dhcp.root-path", rootpath, 0);
|
|
|
|
/*
|
|
* Our own IP address must be valid. Silently get out if it's not set,
|
|
* but whine if it's there and we can't parse it.
|
|
*/
|
|
if ((envstr = ub_env_get("ipaddr")) == NULL)
|
|
return;
|
|
if ((myip.s_addr = inet_addr(envstr)) == INADDR_NONE) {
|
|
printf("Could not parse ipaddr '%s'\n", envstr);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Netmask is optional, default to the "natural" netmask for our IP, but
|
|
* whine if it was provided and we couldn't parse it.
|
|
*/
|
|
if ((envstr = ub_env_get("netmask")) != NULL &&
|
|
(netmask = inet_addr(envstr)) == INADDR_NONE) {
|
|
printf("Could not parse netmask '%s'\n", envstr);
|
|
}
|
|
if (netmask == INADDR_NONE) {
|
|
if (IN_CLASSA(myip.s_addr))
|
|
netmask = IN_CLASSA_NET;
|
|
else if (IN_CLASSB(myip.s_addr))
|
|
netmask = IN_CLASSB_NET;
|
|
else
|
|
netmask = IN_CLASSC_NET;
|
|
}
|
|
|
|
/*
|
|
* Get optional serverip before rootpath; the latter can override it.
|
|
* Whine only if it's present but can't be parsed.
|
|
*/
|
|
serveraddr = INADDR_NONE;
|
|
if ((envstr = ub_env_get("serverip")) != NULL) {
|
|
if ((serveraddr = inet_addr(envstr)) == INADDR_NONE)
|
|
printf("Could not parse serverip '%s'\n", envstr);
|
|
}
|
|
|
|
/*
|
|
* There must be a rootpath. It may be ip:/path or it may be just the
|
|
* path in which case the ip needs to be in serverip.
|
|
*/
|
|
rootaddr = net_parse_rootpath();
|
|
if (rootaddr == INADDR_NONE)
|
|
rootaddr = serveraddr;
|
|
if (rootaddr == INADDR_NONE) {
|
|
printf("No server address for rootpath '%s'\n", envstr);
|
|
return;
|
|
}
|
|
rootip.s_addr = rootaddr;
|
|
|
|
/*
|
|
* Gateway IP is optional unless rootip is on a different net in which
|
|
* case whine if it's missing or we can't parse it, and set rootip addr
|
|
* to zero, which signals to other network code that network params
|
|
* aren't set (so it will try dhcp, bootp, etc).
|
|
*/
|
|
envstr = ub_env_get("gatewayip");
|
|
if (!SAMENET(myip, rootip, netmask)) {
|
|
if (envstr == NULL) {
|
|
printf("Need gatewayip for a root server on a "
|
|
"different network.\n");
|
|
rootip.s_addr = 0;
|
|
return;
|
|
}
|
|
if ((gateip.s_addr = inet_addr(envstr) == INADDR_NONE)) {
|
|
printf("Could not parse gatewayip '%s'\n", envstr);
|
|
rootip.s_addr = 0;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
net_match(struct netif *nif, void *machdep_hint)
|
|
{
|
|
char **a = (char **)machdep_hint;
|
|
|
|
if (memcmp("net", *a, 3) == 0)
|
|
return (1);
|
|
|
|
printf("net_match: could not match network device\n");
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
net_probe(struct netif *nif, void *machdep_hint)
|
|
{
|
|
struct device_info *di;
|
|
int i;
|
|
|
|
for (i = 0; i < devs_no; i++)
|
|
if ((di = ub_dev_get(i)) != NULL)
|
|
if (di->type == DEV_TYP_NET)
|
|
break;
|
|
|
|
if (i == devs_no) {
|
|
printf("net_probe: no network devices found, maybe not"
|
|
" enumerated yet..?\n");
|
|
return (-1);
|
|
}
|
|
|
|
#if defined(NETIF_DEBUG)
|
|
printf("net_probe: network device found: %d\n", i);
|
|
#endif
|
|
uboot_softc.sc_handle = i;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static ssize_t
|
|
net_put(struct iodesc *desc, void *pkt, size_t len)
|
|
{
|
|
struct netif *nif = desc->io_netif;
|
|
struct uboot_softc *sc = nif->nif_devdata;
|
|
size_t sendlen;
|
|
ssize_t rv;
|
|
|
|
#if defined(NETIF_DEBUG)
|
|
struct ether_header *eh;
|
|
|
|
printf("net_put: desc %p, pkt %p, len %d\n", desc, pkt, len);
|
|
eh = pkt;
|
|
printf("dst: %s ", ether_sprintf(eh->ether_dhost));
|
|
printf("src: %s ", ether_sprintf(eh->ether_shost));
|
|
printf("type: 0x%x\n", eh->ether_type & 0xffff);
|
|
#endif
|
|
|
|
if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) {
|
|
sendlen = ETHER_MIN_LEN - ETHER_CRC_LEN;
|
|
bzero(sc->sc_txbufp, sendlen);
|
|
} else
|
|
sendlen = len;
|
|
|
|
memcpy(sc->sc_txbufp, pkt, len);
|
|
|
|
rv = ub_dev_send(sc->sc_handle, sc->sc_txbufp, sendlen);
|
|
|
|
#if defined(NETIF_DEBUG)
|
|
printf("net_put: ub_send returned %d\n", rv);
|
|
#endif
|
|
if (rv == 0)
|
|
rv = len;
|
|
else
|
|
rv = -1;
|
|
|
|
return (rv);
|
|
}
|
|
|
|
static ssize_t
|
|
net_get(struct iodesc *desc, void **pkt, time_t timeout)
|
|
{
|
|
struct netif *nif = desc->io_netif;
|
|
struct uboot_softc *sc = nif->nif_devdata;
|
|
time_t t;
|
|
int err, rlen;
|
|
size_t len;
|
|
char *buf;
|
|
|
|
#if defined(NETIF_DEBUG)
|
|
printf("net_get: pkt %p, timeout %d\n", pkt, timeout);
|
|
#endif
|
|
t = getsecs();
|
|
len = sizeof(sc->sc_rxbuf);
|
|
do {
|
|
err = ub_dev_recv(sc->sc_handle, sc->sc_rxbuf, len, &rlen);
|
|
|
|
if (err != 0) {
|
|
printf("net_get: ub_dev_recv() failed, error=%d\n",
|
|
err);
|
|
rlen = 0;
|
|
break;
|
|
}
|
|
} while ((rlen == -1 || rlen == 0) && (getsecs() - t < timeout));
|
|
|
|
#if defined(NETIF_DEBUG)
|
|
printf("net_get: received len %d (%x)\n", rlen, rlen);
|
|
#endif
|
|
|
|
if (rlen > 0) {
|
|
buf = malloc(rlen + ETHER_ALIGN);
|
|
if (buf == NULL)
|
|
return (-1);
|
|
memcpy(buf + ETHER_ALIGN, sc->sc_rxbuf, rlen);
|
|
*pkt = buf;
|
|
return ((ssize_t)rlen);
|
|
}
|
|
|
|
return (-1);
|
|
}
|
|
|
|
static void
|
|
net_init(struct iodesc *desc, void *machdep_hint)
|
|
{
|
|
struct netif *nif = desc->io_netif;
|
|
struct uboot_softc *sc;
|
|
struct device_info *di;
|
|
int err;
|
|
|
|
sc = nif->nif_devdata = &uboot_softc;
|
|
|
|
if ((err = ub_dev_open(sc->sc_handle)) != 0)
|
|
panic("%s%d: initialisation failed with error %d",
|
|
nif->nif_driver->netif_bname, nif->nif_unit, err);
|
|
|
|
/* Get MAC address */
|
|
di = ub_dev_get(sc->sc_handle);
|
|
memcpy(desc->myea, di->di_net.hwaddr, 6);
|
|
if (memcmp (desc->myea, "\0\0\0\0\0\0", 6) == 0) {
|
|
panic("%s%d: empty ethernet address!",
|
|
nif->nif_driver->netif_bname, nif->nif_unit);
|
|
}
|
|
|
|
/* Attempt to get netboot params from the u-boot env. */
|
|
get_env_net_params();
|
|
if (myip.s_addr != 0)
|
|
desc->myip = myip;
|
|
|
|
#if defined(NETIF_DEBUG)
|
|
printf("network: %s%d attached to %s\n", nif->nif_driver->netif_bname,
|
|
nif->nif_unit, ether_sprintf(desc->myea));
|
|
#endif
|
|
|
|
/* Set correct alignment for TX packets */
|
|
sc->sc_txbufp = sc->sc_txbuf;
|
|
if ((unsigned long)sc->sc_txbufp % PKTALIGN)
|
|
sc->sc_txbufp += PKTALIGN -
|
|
(unsigned long)sc->sc_txbufp % PKTALIGN;
|
|
}
|
|
|
|
static void
|
|
net_end(struct netif *nif)
|
|
{
|
|
struct uboot_softc *sc = nif->nif_devdata;
|
|
int err;
|
|
|
|
if ((err = ub_dev_close(sc->sc_handle)) != 0)
|
|
panic("%s%d: net_end failed with error %d",
|
|
nif->nif_driver->netif_bname, nif->nif_unit, err);
|
|
}
|