Linux-2.6.12-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!
diff --git a/arch/um/drivers/pcap_user.c b/arch/um/drivers/pcap_user.c
new file mode 100644
index 0000000..edfcb29
--- /dev/null
+++ b/arch/um/drivers/pcap_user.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2002 Jeff Dike <jdike@karaya.com>
+ * Licensed under the GPL.
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <pcap.h>
+#include <asm/types.h>
+#include "net_user.h"
+#include "pcap_user.h"
+#include "user.h"
+
+#define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER)
+
+#define PCAP_FD(p) (*(int *)(p))
+
+static void pcap_user_init(void *data, void *dev)
+{
+ struct pcap_data *pri = data;
+ pcap_t *p;
+ char errors[PCAP_ERRBUF_SIZE];
+
+ p = pcap_open_live(pri->host_if, MAX_PACKET, pri->promisc, 0, errors);
+ if(p == NULL){
+ printk("pcap_user_init : pcap_open_live failed - '%s'\n",
+ errors);
+ return;
+ }
+
+ pri->dev = dev;
+ pri->pcap = p;
+}
+
+static int pcap_open(void *data)
+{
+ struct pcap_data *pri = data;
+ __u32 netmask;
+ int err;
+
+ if(pri->pcap == NULL)
+ return(-ENODEV);
+
+ if(pri->filter != NULL){
+ err = dev_netmask(pri->dev, &netmask);
+ if(err < 0){
+ printk("pcap_open : dev_netmask failed\n");
+ return(-EIO);
+ }
+
+ pri->compiled = um_kmalloc(sizeof(struct bpf_program));
+ if(pri->compiled == NULL){
+ printk("pcap_open : kmalloc failed\n");
+ return(-ENOMEM);
+ }
+
+ err = pcap_compile(pri->pcap,
+ (struct bpf_program *) pri->compiled,
+ pri->filter, pri->optimize, netmask);
+ if(err < 0){
+ printk("pcap_open : pcap_compile failed - '%s'\n",
+ pcap_geterr(pri->pcap));
+ return(-EIO);
+ }
+
+ err = pcap_setfilter(pri->pcap, pri->compiled);
+ if(err < 0){
+ printk("pcap_open : pcap_setfilter failed - '%s'\n",
+ pcap_geterr(pri->pcap));
+ return(-EIO);
+ }
+ }
+
+ return(PCAP_FD(pri->pcap));
+}
+
+static void pcap_remove(void *data)
+{
+ struct pcap_data *pri = data;
+
+ if(pri->compiled != NULL)
+ pcap_freecode(pri->compiled);
+
+ pcap_close(pri->pcap);
+}
+
+struct pcap_handler_data {
+ char *buffer;
+ int len;
+};
+
+static void handler(u_char *data, const struct pcap_pkthdr *header,
+ const u_char *packet)
+{
+ int len;
+
+ struct pcap_handler_data *hdata = (struct pcap_handler_data *) data;
+
+ len = hdata->len < header->caplen ? hdata->len : header->caplen;
+ memcpy(hdata->buffer, packet, len);
+ hdata->len = len;
+}
+
+int pcap_user_read(int fd, void *buffer, int len, struct pcap_data *pri)
+{
+ struct pcap_handler_data hdata = ((struct pcap_handler_data)
+ { .buffer = buffer,
+ .len = len });
+ int n;
+
+ n = pcap_dispatch(pri->pcap, 1, handler, (u_char *) &hdata);
+ if(n < 0){
+ printk("pcap_dispatch failed - %s\n", pcap_geterr(pri->pcap));
+ return(-EIO);
+ }
+ else if(n == 0)
+ return(0);
+ return(hdata.len);
+}
+
+struct net_user_info pcap_user_info = {
+ .init = pcap_user_init,
+ .open = pcap_open,
+ .close = NULL,
+ .remove = pcap_remove,
+ .set_mtu = NULL,
+ .add_address = NULL,
+ .delete_address = NULL,
+ .max_packet = MAX_PACKET - ETH_HEADER_OTHER
+};
+
+/*
+ * 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:
+ */