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beceem: remove ARP spoofing 

Linux support NOARP flag, so the whole Arp spoofing routines
are not needed.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
This commit is contained in:
Stephen Hemminger 2010-11-01 09:53:58 -04:00
parent 6ba8fe77dd
commit 7441698fe9
4 changed files with 7 additions and 107 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

94
drivers/staging/bcm/Arp.c
View File

@ -1,94 +0,0 @@
/*
* File Name: Arp.c
* Abstract: This file contains the routines for handling ARP PACKETS
*/
#include "headers.h"
#define ARP_PKT_SIZE 60
/* =========================================================================
* Function - reply_to_arp_request()
*
* Description - When this host tries to broadcast ARP request packet through
* the virtual interface (veth0), reply directly to upper layer.
* This function allocates a new skb for ARP reply packet,
* fills in the fields of the packet and then sends it to
* upper layer.
*
* Parameters - skb: Pointer to sk_buff structure of the ARP request pkt.
*
* Returns - None
* =========================================================================*/
VOID
reply_to_arp_request(struct sk_buff *skb)
{
PMINI_ADAPTER Adapter;
struct ArpHeader *pArpHdr = NULL;
struct ethhdr *pethhdr = NULL;
UCHAR uiIPHdr[4];
/* Check for valid skb */
if(skb == NULL)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Invalid skb: Cannot reply to ARP request\n");
return;
}
Adapter = GET_BCM_ADAPTER(skb->dev);
/* Print the ARP Request Packet */
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, ARP_RESP, DBG_LVL_ALL, "ARP Packet Dump :");
BCM_DEBUG_PRINT_BUFFER(Adapter,DBG_TYPE_TX, ARP_RESP, DBG_LVL_ALL, (PUCHAR)(skb->data), skb->len);
/*
* Extract the Ethernet Header and Arp Payload including Header
*/
pethhdr = (struct ethhdr *)skb->data;
pArpHdr = (struct ArpHeader *)(skb->data+ETH_HLEN);
if(Adapter->bETHCSEnabled)
{
if(memcmp(pethhdr->h_source, Adapter->dev->dev_addr, ETH_ALEN))
{
dev_kfree_skb(skb);
return;
}
}
// Set the Ethernet Header First.
memcpy(pethhdr->h_dest, pethhdr->h_source, ETH_ALEN);
if(!memcmp(pethhdr->h_source, Adapter->dev->dev_addr, ETH_ALEN))
{
pethhdr->h_source[5]++;
}
/* Set the reply to ARP Reply */
pArpHdr->arp.ar_op = ntohs(ARPOP_REPLY);
/* Set the HW Address properly */
memcpy(pArpHdr->ar_sha, pethhdr->h_source, ETH_ALEN);
memcpy(pArpHdr->ar_tha, pethhdr->h_dest, ETH_ALEN);
// Swapping the IP Adddress
memcpy(uiIPHdr,pArpHdr->ar_sip,4);
memcpy(pArpHdr->ar_sip,pArpHdr->ar_tip,4);
memcpy(pArpHdr->ar_tip,uiIPHdr,4);
/* Print the ARP Reply Packet */
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, ARP_RESP, DBG_LVL_ALL, "ARP REPLY PACKET: ");
/* Send the Packet to upper layer */
BCM_DEBUG_PRINT_BUFFER(Adapter,DBG_TYPE_TX, ARP_RESP, DBG_LVL_ALL, (PUCHAR)(skb->data), skb->len);
skb->protocol = eth_type_trans(skb,skb->dev);
skb->pkt_type = PACKET_HOST;
// skb->mac.raw=skb->data+LEADER_SIZE;
skb_set_mac_header (skb, LEADER_SIZE);
netif_rx(skb);
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, ARP_RESP, DBG_LVL_ALL, "<=============\n");
return;
}

3
drivers/staging/bcm/Bcmnet.c
View File

@ -124,6 +124,9 @@ int register_networkdev(PMINI_ADAPTER Adapter)
net->ethtool_ops = &bcm_ethtool_ops;
net->mtu = MTU_SIZE; /* 1400 Bytes */
net->tx_queue_len = TX_QLEN;
net->flags |= IFF_NOARP;
net->flags &= ~(IFF_BROADCAST|IFF_MULTICAST);
netif_carrier_off(net);
SET_NETDEV_DEVTYPE(net, &wimax_type);

2
drivers/staging/bcm/Makefile
View File

@ -6,7 +6,7 @@ obj-$(CONFIG_BCM_WIMAX) += bcm_wimax.o
bcm_wimax-y := InterfaceDld.o InterfaceIdleMode.o InterfaceInit.o InterfaceRx.o \
InterfaceIsr.o InterfaceMisc.o InterfaceTx.o \
Arp.o CmHost.o IPv6Protocol.o Qos.o Transmit.o\
CmHost.o IPv6Protocol.o Qos.o Transmit.o\
Bcmnet.o DDRInit.o HandleControlPacket.o\
LeakyBucket.o Misc.o sort.o Bcmchar.o hostmibs.o PHSModule.o\
led_control.o nvm.o vendorspecificextn.o

15
drivers/staging/bcm/Transmit.c
View File

@ -6,7 +6,7 @@
digraph transmit1 {
node[shape=box]
edge[weight=5;color=red]
bcm_transmit->reply_to_arp_request[label="ARP"]
bcm_transmit->GetPacketQueueIndex[label="IP Packet"]
GetPacketQueueIndex->IpVersion4[label="IPV4"]
GetPacketQueueIndex->IpVersion6[label="IPV6"]
@ -63,17 +63,8 @@ netdev_tx_t bcm_transmit(struct sk_buff *skb, struct net_device *dev)
qindex = GetPacketQueueIndex(Adapter, skb);
if (INVALID_QUEUE_INDEX==qindex) {
if (ntohs(eth_hdr(skb)->h_proto) != ETH_ARP_FRAME)
goto drop;
/*
Reply directly to ARP request packet
ARP Spoofing only if NO ETH CS rule matches for it
*/
reply_to_arp_request(skb);
return NETDEV_TX_OK;
}
if (INVALID_QUEUE_INDEX==qindex)
goto drop;
if (Adapter->PackInfo[qindex].uiCurrentPacketsOnHost >= SF_MAX_ALLOWED_PACKETS_TO_BACKUP)
return NETDEV_TX_BUSY;