X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fum%2Fdrivers%2Fpcap_user.c;h=5f903587d69e4ae322672270c0bba17d2ec41295;hb=57f8f7b60db6f1ed2c6918ab9230c4623a9dbe37;hp=a1747dc0ff6fbcf3cffe12ec5ba5caf12a23bd90;hpb=56bd194bb200ef0c49517de67a7d7f4b043b11b1;p=linux-2.6-omap-h63xx.git

diff --git a/arch/um/drivers/pcap_user.c b/arch/um/drivers/pcap_user.c
index a1747dc0ff6..5f903587d69 100644
--- a/arch/um/drivers/pcap_user.c
+++ b/arch/um/drivers/pcap_user.c
@@ -1,38 +1,37 @@
 /*
- * Copyright (C) 2002 Jeff Dike <jdike@karaya.com>
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL.
  */
 
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
 #include <errno.h>
 #include <pcap.h>
+#include <string.h>
 #include <asm/types.h>
 #include "net_user.h"
 #include "pcap_user.h"
-#include "user.h"
+#include "kern_constants.h"
 #include "um_malloc.h"
-
-#define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER)
+#include "user.h"
 
 #define PCAP_FD(p) (*(int *)(p))
 
-static void pcap_user_init(void *data, void *dev)
+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, MAX_PACKET, pri->promisc, 0, errors);
-	if(p == NULL){
-		printk("pcap_user_init : pcap_open_live failed - '%s'\n", 
-		       errors);
-		return;
+	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_open(void *data)
@@ -41,50 +40,56 @@ static int pcap_open(void *data)
 	__u32 netmask;
 	int err;
 
-	if(pri->pcap == NULL)
+	if (pri->pcap == NULL)
 		return -ENODEV;
 
-	if(pri->filter != NULL){
+	if (pri->filter != NULL) {
 		err = dev_netmask(pri->dev, &netmask);
-		if(err < 0){
-			printk("pcap_open : dev_netmask failed\n");
+		if (err < 0) {
+			printk(UM_KERN_ERR "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");
+		pri->compiled = uml_kmalloc(sizeof(struct bpf_program),
+					UM_GFP_KERNEL);
+		if (pri->compiled == NULL) {
+			printk(UM_KERN_ERR "pcap_open : kmalloc failed\n");
 			return -ENOMEM;
 		}
 
-		err = pcap_compile(pri->pcap, 
-				   (struct bpf_program *) pri->compiled, 
+		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;
+		if (err < 0) {
+			printk(UM_KERN_ERR "pcap_open : pcap_compile failed - "
+			       "'%s'\n", pcap_geterr(pri->pcap));
+			goto out;
 		}
 
 		err = pcap_setfilter(pri->pcap, pri->compiled);
-		if(err < 0){
-			printk("pcap_open : pcap_setfilter failed - '%s'\n", 
-			       pcap_geterr(pri->pcap));
-			return -EIO;
+		if (err < 0) {
+			printk(UM_KERN_ERR "pcap_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)
+	if (pri->compiled != NULL)
 		pcap_freecode(pri->compiled);
 
-	pcap_close(pri->pcap);
+	if (pri->pcap != NULL)
+		pcap_close(pri->pcap);
 }
 
 struct pcap_handler_data {
@@ -92,7 +97,7 @@ struct pcap_handler_data {
 	int len;
 };
 
-static void handler(u_char *data, const struct pcap_pkthdr *header, 
+static void handler(u_char *data, const struct pcap_pkthdr *header,
 		    const u_char *packet)
 {
 	int len;
@@ -112,11 +117,12 @@ int pcap_user_read(int fd, void *buffer, int len, struct pcap_data *pri)
 	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));
+	if (n < 0) {
+		printk(UM_KERN_ERR "pcap_dispatch failed - %s\n",
+		       pcap_geterr(pri->pcap));
 		return -EIO;
 	}
-	else if(n == 0) 
+	else if (n == 0)
 		return 0;
 	return hdata.len;
 }
@@ -126,8 +132,8 @@ const struct net_user_info pcap_user_info = {
 	.open		= pcap_open,
 	.close	 	= NULL,
 	.remove	 	= pcap_remove,
-	.set_mtu	= NULL,
 	.add_address	= NULL,
 	.delete_address = NULL,
-	.max_packet	= MAX_PACKET - ETH_HEADER_OTHER
+	.mtu		= ETH_MAX_PACKET,
+	.max_packet	= ETH_MAX_PACKET + ETH_HEADER_OTHER,
 };