From db8b394cfffb70bc8d9936b4992c3adad087b268 Mon Sep 17 00:00:00 2001
From: "Michael I. Bushnell" <mib@gnu.org>
Date: Mon, 25 Sep 1995 19:27:02 +0000
Subject: Formerly ethernet.c.~7~
---
pfinet/ethernet.c | 165 +++++++++++++++++++++++++++++++++++-------------------
1 file changed, 107 insertions(+), 58 deletions(-)
(limited to 'pfinet/ethernet.c')
diff --git a/pfinet/ethernet.c b/pfinet/ethernet.c
index e0841072..1b822c3c 100644
--- a/pfinet/ethernet.c
+++ b/pfinet/ethernet.c
@@ -20,6 +20,12 @@
#include <device/device.h>
#include <device/net_status.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <netinet/in.h>
+#include <string.h>
+
+#include "pfinet.h"
#define ethername "el1"
@@ -31,9 +37,60 @@ mach_port_t readptname;
struct device ether_dev;
+struct enet_statistics retbuf;
+
+/* Mach doesn't provide this. DAMN. */
+struct enet_statistics *
+ethernet_get_stats (struct device *dev)
+{
+ return &retbuf;
+}
+
+int
+ethernet_stop (struct device *dev)
+{
+ return 0;
+}
+
+void
+ethernet_set_multi (struct device *dev, int numaddrs, void *addrs)
+{
+ assert (numaddrs == 0);
+}
+
+static short ether_filter[] =
+{
+ NETF_PUSHLIT | NETF_NOP,
+ 1,
+ NETF_PUSHZERO | NETF_OR,
+};
+
+static int ether_filter_len = 3;
+
int
-ethernet_demuxer (struct mach_msg_header_t *inp,
- struct mach_msg_header_t *outp)
+ethernet_open (struct device *dev)
+{
+ if (ether_port != MACH_PORT_NULL)
+ return 1;
+
+ etherreadclass = ports_create_class (0, 0);
+ readpt = ports_allocate_port (pfinet_bucket, sizeof (struct port_info),
+ etherreadclass);
+ readptname = ports_get_right (readpt);
+ mach_port_insert_right (mach_task_self (), readptname, readptname,
+ MACH_MSG_TYPE_MAKE_SEND);
+
+ device_open (master_device, D_WRITE | D_READ, ethername, ðer_port);
+
+ device_set_filter (ether_port, ports_get_right (readpt),
+ MACH_MSG_TYPE_MAKE_SEND, NET_HI_PRI,
+ ether_filter, ether_filter_len);
+ return 0;
+}
+
+int
+ethernet_demuxer (mach_msg_header_t *inp,
+ mach_msg_header_t *outp)
{
struct net_rcv_msg *msg = (struct net_rcv_msg *) inp;
struct packet_header *pkthdr = (struct packet_header *) msg->packet;
@@ -65,7 +122,7 @@ ethernet_demuxer (struct mach_msg_header_t *inp,
mutex_lock (&global_lock);
skb = alloc_skb (datalen, GFP_ATOMIC);
skb->len = datalen;
- sbx->dev = ether_dev;
+ skb->dev = ðer_dev;
/* Copy the two parts of the frame into the buffer. */
bcopy (msg->header, skb->data, ETH_HLEN);
@@ -80,78 +137,70 @@ ethernet_demuxer (struct mach_msg_header_t *inp,
return 1;
}
-static short ether_filter[] =
+/* Transmit an ethernet frame */
+int
+ethernet_xmit (struct sk_buff *skb, struct device *dev)
{
- NETF_PUSHLIT | NETF_NOP,
- 1,
- NETF_PUSHZERO | NETF_OR,
-};
-
-static int ether_filter_len = 3;
+ u_int count;
+ int err;
+
+ err = device_write (ether_port, D_NOWAIT, 0, skb->data, skb->len, &count);
+ assert (err == 0);
+ assert (count == skb->len);
+ return 0;
+}
-/* Much of this is taken from Linux drivers/net/net_init.c: ether_setup */
void
setup_ethernet_device (void)
{
+ struct net_status netstat;
+ u_int count;
+ int net_address[2];
int i;
/* Interface buffers. */
- ether_dev->name = ethername;
+ ether_dev.name = ethername;
for (i = 0; i < DEV_NUMBUFFS; i++)
- skb_queue_head_init (ðer_dev->buffs[i]);
+ skb_queue_head_init (ðer_dev.buffs[i]);
/* Functions */
- ether_dev->open = ethernet_open;
- ether_dev->stop = ethernet_stop;
- ether_dev->hard_start_xmit = ethernet_xmit;
- ether_dev->hard_header = eth_header;
- ether_dev->rebuild_header = eth_rebuild_header;
- ether_dev->type_trans = eth_type_trans;
- ether_dev->get_stats = ethernet_get_stats;
- ether_dev->set_multicast_list = ethernet_set_multi;
+ ether_dev.open = ethernet_open;
+ ether_dev.stop = ethernet_stop;
+ ether_dev.hard_start_xmit = ethernet_xmit;
+ ether_dev.hard_header = eth_header;
+ ether_dev.rebuild_header = eth_rebuild_header;
+ ether_dev.type_trans = eth_type_trans;
+ ether_dev.get_stats = ethernet_get_stats;
+ ether_dev.set_multicast_list = ethernet_set_multi;
/* Some more fields */
- ether_dev->type = ARPHRD_ETHER;
- ether_dev->hard_header_len = sizeof (struct ethhdr);
- ether_dev->mtu = 1500;
- ether_dev->addr_len = 6;
+ ether_dev.type = ARPHRD_ETHER;
+ ether_dev.hard_header_len = sizeof (struct ethhdr);
+ ether_dev.addr_len = ETH_ALEN;
for (i = 0; i < 6; i++)
- ether_dev->broadcast[i] = 0xff;
- ether_dev->flags = IFF_BROADCAST | IFF_MULTICAST;
- ether_dev->family = AF_INET; /* hmm. */
- ether_dev->pa_addr = ether_dev->pa_brdaddr = ether_dev->pa_mask = 0;
- ether_dev->pa_alen = sizeof (unsigned_long);
+ ether_dev.broadcast[i] = 0xff;
+ ether_dev.flags = IFF_BROADCAST | IFF_MULTICAST;
+ ether_dev.family = AF_INET; /* hmm. */
+ ether_dev.pa_addr = ether_dev.pa_brdaddr = ether_dev.pa_mask = 0;
+ ether_dev.pa_alen = sizeof (unsigned long);
+
+ /* Fetch hardware information */
+ count = NET_STATUS_COUNT;
+ device_get_status (ether_port, NET_STATUS, (dev_status_t) &netstat, &count);
+ ether_dev.mtu = netstat.max_packet_size;
+ assert (netstat.header_format == HDR_ETHERNET);
+ assert (netstat.header_size == ETH_HLEN);
+ assert (netstat.address_size == ETH_ALEN);
+
+ count = 2;
+ assert (count * sizeof (int) <= ETH_ALEN);
+ device_get_status (ether_port, NET_ADDRESS, net_address, &count);
+ net_address[0] = ntohl (net_address[0]);
+ net_address[1] = ntohl (net_address[1]);
+ bcopy (net_address, ether_dev.dev_addr, ETH_ALEN);
/* That should be enough. */
}
-struct enet_statistics retbuf;
-
-/* Mach doesn't provide this. DAMN. */
-struct enet_statistics *
-get_stats (struct device *dev)
-{
- return &retbuf;
-}
-
-
-
-
-void
-ethernet_open (void)
-{
- etherreadclass = ports_create_class (0, 0);
- readpt = ports_allocate_port (pfinet_bucket, sizeof (struct port_info),
- etherreadclass);
- readptname = ports_get_right (readpt);
- mach_port_insert_right (mach_task_self (), readptname, readptname,
- MACH_MSG_TYPE_MAKE_SEND);
-
- device_open (master_device, D_WRITE | D_READ, ethername, ðer_port);
-
- device_set_filter (ether_port, ports_get_right (readpt),
- MACH_MSG_TYPE_MAKE_SEND, NET_HI_PRI,
- ether_filter, ether_filter_len);
-}
--
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