CHECKSUM
--checksum-fill
So I think this patch can be withdrawn in favour of one of these two
workarounds.
On 16/12/17 05:27, David Miller wrote:
From: Brendan McGrath
Date: Thu, 14 Dec 2017 22:37:03 +1100
Currently, when forwarding a multicast packet originating from a
Virtual Interface
therefore rejected by the receiving machine(s).
This patch ensures the checksum is recalculated before forwarding.
Signed-off-by: Brendan McGrath
---
Changes since PATCH v1:
- fixed formatting
- clarified in git comment that issue is with packet originating on
multicast router
- check value of
orrect (packet accepted)
ip_summed = 1 (CHECKSUM_UNNECESSARY)
On 14/12/17 04:52, Eric Dumazet wrote:
On Wed, 2017-12-13 at 22:20 +1100, Brendan McGrath wrote:
Currently, when forwarding from a Virtual Interface to a Physical
Interface, ip_summed is set to a value of CHECKSUM_UNNECESSARY and
the UDP checksum h
to ensure a looped back packet
is delivered to the Multicast Router.
Signed-off-by: Brendan McGrath
---
I considered putting this in mld_sendpack after the call to icmp6_dst_alloc
but it looks like igmp6_send could use this fix too.
In the end I followed the example set by addrconf_dst_alloc
receiving
machine(s).
This patch ensures the checksum is recalculated before forwarding.
Signed-off-by: Brendan McGrath
---
It's a bit ugly putting UDP specific code in this spot - but I'm not
aware of any other protocols that are:
a) multicast;
b) forwarded; and
c) checksummed
net/ip
