netdev - pcap and ARP hardware type for IEEE 802.15.4

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <AANLkTin-7qNQSLPqtBOosByw5iM3Zaqxgz2Er-uT41bb@mail.gmail.com>
Date:	Fri, 30 Jul 2010 10:05:09 -0400
From:	Jon Smirl <jonsmirl@...il.com>
To:	linux-zigbee-devel <linux-zigbee-devel@...ts.sourceforge.net>,
	Netdev <netdev@...r.kernel.org>
Subject: pcap and ARP hardware type for IEEE 802.15.4

I'm working on pcap support for the native IEEE 802.15.4
implementation in the kernel.
http://sourceforge.net/apps/trac/linux-zigbee/

pcap uses ARPHRD_ to write the DLT value into the pcap file. We need a
new DLT for the internal Linux packets since they have had the two FCS
bytes stripped from the end.

The 802.15.4 implementation has used two different ARPHRD types, one
for the active interface and one for the monitor interface. Has that
been done correctly? Should there be two types?

void ieee802154_monitor_setup(struct net_device *dev)
{
       struct ieee802154_sub_if_data *priv;

       dev->addr_len           = 0;
       dev->features           = NETIF_F_NO_CSUM;
       dev->hard_header_len    = 0;
       dev->needed_tailroom    = 2; /* FCS */
       dev->mtu                = 127;
       dev->tx_queue_len       = 10;
       dev->type               = ARPHRD_IEEE802154_MONITOR;
       dev->flags              = IFF_NOARP | IFF_BROADCAST;
       dev->watchdog_timeo     = 0;

       dev->destructor         = free_netdev;
       dev->netdev_ops         = &ieee802154_monitor_ops;
       dev->ml_priv            = &mac802154_mlme;


void ieee802154_wpan_setup(struct net_device *dev)
{
       struct ieee802154_sub_if_data *priv;

       dev->addr_len           = IEEE802154_ADDR_LEN;
       memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
       dev->features           = NETIF_F_NO_CSUM;
       dev->hard_header_len    = 2 + 1 + 20 + 14;
       dev->header_ops         = &ieee802154_header_ops;
       dev->needed_tailroom    = 2; /* FCS */
       dev->mtu                = 1280;
       dev->tx_queue_len       = 10;
       dev->type               = ARPHRD_IEEE802154;
       dev->flags              = IFF_NOARP | IFF_BROADCAST;
       dev->watchdog_timeo     = 0;

       dev->destructor         = free_netdev;
       dev->netdev_ops         = &ieee802154_wpan_ops;
       dev->ml_priv            = &mac802154_mlme;




-- 
Jon Smirl
jonsmirl@...il.com
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html