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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/drivers/slip_kern.c
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Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/um/drivers/slip_kern.c')
-rw-r--r--arch/um/drivers/slip_kern.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/arch/um/drivers/slip_kern.c b/arch/um/drivers/slip_kern.c
new file mode 100644
index 000000000000..0886eedba213
--- /dev/null
+++ b/arch/um/drivers/slip_kern.c
@@ -0,0 +1,109 @@
+#include "linux/config.h"
+#include "linux/kernel.h"
+#include "linux/stddef.h"
+#include "linux/init.h"
+#include "linux/netdevice.h"
+#include "linux/if_arp.h"
+#include "net_kern.h"
+#include "net_user.h"
+#include "kern.h"
+#include "slip.h"
+
+struct slip_init {
+ char *gate_addr;
+};
+
+void slip_init(struct net_device *dev, void *data)
+{
+ struct uml_net_private *private;
+ struct slip_data *spri;
+ struct slip_init *init = data;
+
+ private = dev->priv;
+ spri = (struct slip_data *) private->user;
+ *spri = ((struct slip_data)
+ { .name = { '\0' },
+ .addr = NULL,
+ .gate_addr = init->gate_addr,
+ .slave = -1,
+ .ibuf = { '\0' },
+ .obuf = { '\0' },
+ .pos = 0,
+ .esc = 0,
+ .dev = dev });
+
+ dev->init = NULL;
+ dev->hard_header_len = 0;
+ dev->addr_len = 4;
+ dev->type = ARPHRD_ETHER;
+ dev->tx_queue_len = 256;
+ dev->flags = IFF_NOARP;
+ printk("SLIP backend - SLIP IP = %s\n", spri->gate_addr);
+}
+
+static unsigned short slip_protocol(struct sk_buff *skbuff)
+{
+ return(htons(ETH_P_IP));
+}
+
+static int slip_read(int fd, struct sk_buff **skb,
+ struct uml_net_private *lp)
+{
+ return(slip_user_read(fd, (*skb)->mac.raw, (*skb)->dev->mtu,
+ (struct slip_data *) &lp->user));
+}
+
+static int slip_write(int fd, struct sk_buff **skb,
+ struct uml_net_private *lp)
+{
+ return(slip_user_write(fd, (*skb)->data, (*skb)->len,
+ (struct slip_data *) &lp->user));
+}
+
+struct net_kern_info slip_kern_info = {
+ .init = slip_init,
+ .protocol = slip_protocol,
+ .read = slip_read,
+ .write = slip_write,
+};
+
+static int slip_setup(char *str, char **mac_out, void *data)
+{
+ struct slip_init *init = data;
+
+ *init = ((struct slip_init)
+ { .gate_addr = NULL });
+
+ if(str[0] != '\0')
+ init->gate_addr = str;
+ return(1);
+}
+
+static struct transport slip_transport = {
+ .list = LIST_HEAD_INIT(slip_transport.list),
+ .name = "slip",
+ .setup = slip_setup,
+ .user = &slip_user_info,
+ .kern = &slip_kern_info,
+ .private_size = sizeof(struct slip_data),
+ .setup_size = sizeof(struct slip_init),
+};
+
+static int register_slip(void)
+{
+ register_transport(&slip_transport);
+ return(1);
+}
+
+__initcall(register_slip);
+
+/*
+ * 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:
+ */