1 files changed, 123 insertions, 0 deletions
diff --git a/arch/um/drivers/pcap_kern.c b/arch/um/drivers/pcap_kern.c
new file mode 100644
index 0000000..07c80f2
--- /dev/null
+++ b/arch/um/drivers/pcap_kern.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2002 Jeff Dike <jdike@karaya.com>
+ * Licensed under the GPL.
+ */
+
+#include "linux/init.h"
+#include "linux/netdevice.h"
+#include "linux/etherdevice.h"
+#include "net_kern.h"
+#include "net_user.h"
+#include "pcap_user.h"
+
+struct pcap_init {
+	char *host_if;
+	int promisc;
+	int optimize;
+	char *filter;
+};
+
+void pcap_init(struct net_device *dev, void *data)
+{
+	struct uml_net_private *pri;
+	struct pcap_data *ppri;
+	struct pcap_init *init = data;
+
+	pri = dev->priv;
+	ppri = (struct pcap_data *) pri->user;
+	ppri->host_if = init->host_if;
+	ppri->promisc = init->promisc;
+	ppri->optimize = init->optimize;
+	ppri->filter = init->filter;
+}
+
+static int pcap_read(int fd, struct sk_buff **skb, 
+		       struct uml_net_private *lp)
+{
+	*skb = ether_adjust_skb(*skb, ETH_HEADER_OTHER);
+	if(*skb == NULL) return(-ENOMEM);
+	return(pcap_user_read(fd, (*skb)->mac.raw, 
+			      (*skb)->dev->mtu + ETH_HEADER_OTHER,
+			      (struct pcap_data *) &lp->user));
+}
+
+static int pcap_write(int fd, struct sk_buff **skb, struct uml_net_private *lp)
+{
+	return(-EPERM);
+}
+
+static struct net_kern_info pcap_kern_info = {
+	.init			= pcap_init,
+	.protocol		= eth_protocol,
+	.read			= pcap_read,
+	.write			= pcap_write,
+};
+
+int pcap_setup(char *str, char **mac_out, void *data)
+{
+	struct pcap_init *init = data;
+	char *remain, *host_if = NULL, *options[2] = { NULL, NULL };
+	int i;
+
+	*init = ((struct pcap_init)
+		{ .host_if 	= "eth0",
+		  .promisc 	= 1,
+		  .optimize 	= 0,
+		  .filter 	= NULL });
+
+	remain = split_if_spec(str, &host_if, &init->filter, 
+			       &options[0], &options[1], NULL);
+	if(remain != NULL){
+		printk(KERN_ERR "pcap_setup - Extra garbage on "
+		       "specification : '%s'\n", remain);
+		return(0);
+	}
+
+	if(host_if != NULL)
+		init->host_if = host_if;
+
+	for(i = 0; i < sizeof(options)/sizeof(options[0]); i++){
+		if(options[i] == NULL)
+			continue;
+		if(!strcmp(options[i], "promisc"))
+			init->promisc = 1;
+		else if(!strcmp(options[i], "nopromisc"))
+			init->promisc = 0;
+		else if(!strcmp(options[i], "optimize"))
+			init->optimize = 1;
+		else if(!strcmp(options[i], "nooptimize"))
+			init->optimize = 0;
+		else printk("pcap_setup : bad option - '%s'\n", options[i]);
+	}
+
+	return(1);
+}
+
+static struct transport pcap_transport = {
+	.list 		= LIST_HEAD_INIT(pcap_transport.list),
+	.name 		= "pcap",
+	.setup  	= pcap_setup,
+	.user 		= &pcap_user_info,
+	.kern 		= &pcap_kern_info,
+	.private_size 	= sizeof(struct pcap_data),
+	.setup_size 	= sizeof(struct pcap_init),
+};
+
+static int register_pcap(void)
+{
+	register_transport(&pcap_transport);
+	return(1);
+}
+
+__initcall(register_pcap);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */