aboutsummaryrefslogtreecommitdiff
path: root/arch/um/drivers/pcap_user.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/um/drivers/pcap_user.c')
-rw-r--r--arch/um/drivers/pcap_user.c137
1 files changed, 0 insertions, 137 deletions
diff --git a/arch/um/drivers/pcap_user.c b/arch/um/drivers/pcap_user.c
deleted file mode 100644
index 52ddda3e3b10..000000000000
--- a/arch/um/drivers/pcap_user.c
+++ /dev/null
@@ -1,137 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- */
-
-#include <errno.h>
-#include <pcap.h>
-#include <string.h>
-#include <asm/types.h>
-#include <net_user.h>
-#include "pcap_user.h"
-#include <um_malloc.h>
-
-#define PCAP_FD(p) (*(int *)(p))
-
-static int 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, ETH_MAX_PACKET + ETH_HEADER_OTHER,
- pri->promisc, 0, errors);
- if (p == NULL) {
- printk(UM_KERN_ERR "pcap_user_init : pcap_open_live failed - "
- "'%s'\n", errors);
- return -EINVAL;
- }
-
- pri->dev = dev;
- pri->pcap = p;
- return 0;
-}
-
-static int pcap_user_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(UM_KERN_ERR "pcap_user_open : dev_netmask failed\n");
- return -EIO;
- }
-
- pri->compiled = uml_kmalloc(sizeof(struct bpf_program),
- UM_GFP_KERNEL);
- if (pri->compiled == NULL) {
- printk(UM_KERN_ERR "pcap_user_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(UM_KERN_ERR "pcap_user_open : pcap_compile failed - "
- "'%s'\n", pcap_geterr(pri->pcap));
- goto out;
- }
-
- err = pcap_setfilter(pri->pcap, pri->compiled);
- if (err < 0) {
- printk(UM_KERN_ERR "pcap_user_open : pcap_setfilter "
- "failed - '%s'\n", pcap_geterr(pri->pcap));
- goto out;
- }
- }
-
- return PCAP_FD(pri->pcap);
-
- out:
- kfree(pri->compiled);
- return -EIO;
-}
-
-static void pcap_remove(void *data)
-{
- struct pcap_data *pri = data;
-
- if (pri->compiled != NULL)
- pcap_freecode(pri->compiled);
-
- if (pri->pcap != NULL)
- 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(UM_KERN_ERR "pcap_dispatch failed - %s\n",
- pcap_geterr(pri->pcap));
- return -EIO;
- }
- else if (n == 0)
- return 0;
- return hdata.len;
-}
-
-const struct net_user_info pcap_user_info = {
- .init = pcap_user_init,
- .open = pcap_user_open,
- .close = NULL,
- .remove = pcap_remove,
- .add_address = NULL,
- .delete_address = NULL,
- .mtu = ETH_MAX_PACKET,
- .max_packet = ETH_MAX_PACKET + ETH_HEADER_OTHER,
-};