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pkg/lwip: add support for slipdev

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This commit is contained in:
Benjamin Valentin 2023-10-26 15:12:12 +02:00
parent 6ec3f54b3c
commit 32d17f5313
2 changed files with 126 additions and 0 deletions
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82
pkg/lwip/contrib/netdev/lwip_netdev.c
View File

@ -62,6 +62,15 @@ static err_t _eth_link_output(struct netif *netif, struct pbuf *p);
#ifdef MODULE_LWIP_SIXLOWPAN
static err_t _ieee802154_link_output(struct netif *netif, struct pbuf *p);
#endif
#ifdef MODULE_SLIPDEV
static err_t _slip_link_output(struct netif *netif, struct pbuf *p);
#if LWIP_IPV4
static err_t slip_output4(struct netif *netif, struct pbuf *q, const ip4_addr_t *ipaddr);
#endif
#if LWIP_IPV6
static err_t slip_output6(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr);
#endif
#endif
static void _event_cb(netdev_t *dev, netdev_event_t event);
static void *_event_loop(void *arg);
@ -183,6 +192,47 @@ err_t lwip_netdev_init(struct netif *netif)
#endif /* LWIP_IPV6_AUTOCONFIG */
break;
}
#endif
#ifdef MODULE_SLIPDEV
case NETDEV_TYPE_SLIP:
netif->name[0] = 'S';
netif->name[1] = 'L';
/* TODO: get from driver (currently not in netdev_eth) */
netif->mtu = ETHERNET_DATA_LEN;
netif->linkoutput = _slip_link_output;
#if LWIP_IPV4
netif->output = slip_output4;
#endif
#if LWIP_IPV6
netif->output_ip6 = slip_output6;
if (IS_USED(MODULE_SLIPDEV_L2ADDR)) {
netif->hwaddr_len = (u8_t)netdev->driver->get(netdev, NETOPT_ADDRESS_LONG,
netif->hwaddr,
sizeof(netif->hwaddr));
if (netif->hwaddr_len > sizeof(netif->hwaddr)) {
res = ERR_IF;
goto free;
}
/* netif_create_ip6_linklocal_address() does weird byte-swapping
* with full IIDs, so let's do it ourselves */
ip6_addr_t *addr = ip_2_ip6(&(netif->ip6_addr[0]));
/* addr->addr is a uint32_t array */
if (l2util_ipv6_iid_from_addr(dev_type,
netif->hwaddr, netif->hwaddr_len,
(eui64_t *)&addr->addr[2]) < 0) {
res = ERR_IF;
goto free;
}
ipv6_addr_set_link_local_prefix((ipv6_addr_t *)&addr->addr[0]);
ip6_addr_assign_zone(addr, IP6_UNICAST, netif);
/* Consider address valid. */
netif->ip6_addr_state[0] = IP6_ADDR_PREFERRED;
}
#endif /* LWIP_IPV6 */
break;
#endif
default:
res = ERR_IF;
@ -257,6 +307,38 @@ static err_t _ieee802154_link_output(struct netif *netif, struct pbuf *p)
}
#endif
#ifdef MODULE_SLIPDEV
#if LWIP_IPV4
static err_t slip_output4(struct netif *netif, struct pbuf *q, const ip4_addr_t *ipaddr)
{
(void)ipaddr;
return netif->linkoutput(netif, q);
}
#endif
#if LWIP_IPV6
static err_t slip_output6(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr)
{
(void)ip6addr;
return netif->linkoutput(netif, q);
}
#endif
static err_t _slip_link_output(struct netif *netif, struct pbuf *p)
{
LWIP_ASSERT("p->next == NULL", p->next == NULL);
netdev_t *netdev = netif->state;
iolist_t pkt = {
.iol_base = p->payload,
.iol_len = p->len,
};
lwip_netif_dev_acquire(netif);
err_t res = (netdev->driver->send(netdev, &pkt) >= 0) ? ERR_OK : ERR_BUF;
lwip_netif_dev_release(netif);
return res;
}
#endif
static struct pbuf *_get_recv_pkt(netdev_t *dev)
{
lwip_netif_t *compat_netif = dev->context;

44
pkg/lwip/init_devs/auto_init_slipdev.c Normal file
View File

@ -0,0 +1,44 @@
/*
* Copyright (C) 2023 ML!PA Consulting GmbH
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup sys_auto_init_lwip_netif
* @{
*
* @file
* @brief Auto initialization for the SLIP module
*
* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
*/
#include "slipdev.h"
#include "slipdev_params.h"
#include "lwip_init_devs.h"
#define ENABLE_DEBUG 0
#include "debug.h"
#define NETIF_SLIPDEV_NUMOF ARRAY_SIZE(slipdev_params)
static lwip_netif_t netif[NETIF_SLIPDEV_NUMOF];
static slipdev_t slipdev_devs[NETIF_SLIPDEV_NUMOF];
static void auto_init_slipdev(void)
{
for (unsigned i = 0; i < NETIF_SLIPDEV_NUMOF; i++) {
slipdev_setup(&slipdev_devs[i], &slipdev_params[i], i);
if (lwip_add_ethernet(&netif[i], &slipdev_devs[i].netdev) == NULL) {
DEBUG("Could not add slipdev device\n");
return;
}
}
}
LWIP_INIT_ETH_NETIF(auto_init_slipdev);
/** @} */