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-rw-r--r--arch/um/drivers/pcap_kern.c123
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:
+ */
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