Search Linux Wireless

Re: [RFC] net: ipv4: drop unicast encapsulated in L2 multicast

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



	Hello,

On Wed, 27 Aug 2014, Johannes Berg wrote:

> On Wed, 2014-08-27 at 13:23 +0300, Julian Anastasov wrote:
> 
> > BTW, what kind of packets (protocol) we want to drop? UDP?
> 
> All IP protocols, this comes either from the IPv4 RFC (1122) or from the
> wireless issue which affects all protocols.

	I did a grep for inet_add_protocol, in case if
we prefer to use per-protocol checks:

Protocols that look ok to me: TCP, SCTP, DCCP

ICMP: missing check in icmp_rcv
UDP, UDPLITE: need check in __udp4_lib_rcv
IGMP: uses only multicast address?
PIM: not sure if __pim_rcv() needs check, before skb_tunnel_rx()
	changes pkt_type?

More protocols are also registered with inet_add_protocol(), I don't
see pkt_type checks there, mostly tunnels:
- IPPROTO_GRE
- IPPROTO_L2TP
- IPPROTO_IPIP
- IPPROTO_IPV6 (tunnel64_rcv)

	If going to use a global check I hope there are
no protocols that require exception to this rule.

Regards

--
Julian Anastasov <ja@xxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Host AP]     [ATH6KL]     [Linux Wireless Personal Area Network]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Linux Kernel]     [IDE]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite Hiking]     [MIPS Linux]     [ARM Linux]     [Linux RAID]

  Powered by Linux