Hi netfilter list,
This is my first post to this list, so if this question is better
handled by a different list, or offtopic, please kindly inform me that
is the case. My C is a bit rusty also, so please forgive me if I'm
asking something that is not clear. In addition, this is my first
netfilter module :-)
In a netfilter module I am working on I alter the packet data such that
the length of the packet is reduced by an amount diff. I then set
skb->len via the following code:
skb->len -= diff;
This worked fine with gcc 2.96 but when cross-compiling this module for
OpenWrt with gcc 4.1.2 I get the following error:
error: assignment of read-only member 'len'
Is there a function I can use to set skb->len or do I need to poke
around the kernel code and modify this member to be read-write. I
accept the fact that what I'm doing is probably a hack, but I would like
to get this module working first, then make it well coded second.
Thanks in advance for any advice,
Fred
This is my first post to this list, so if this question is better
handled by a different list, or offtopic, please kindly inform me that
is the case. My C is a bit rusty also, so please forgive me if I'm
asking something that is not clear. In addition, this is my first
netfilter module :-)
In a netfilter module I am working on I alter the packet data such that
the length of the packet is reduced by an amount diff. I then set
skb->len via the following code:
skb->len -= diff;
This worked fine with gcc 2.96 but when cross-compiling this module for
OpenWrt with gcc 4.1.2 I get the following error:
error: assignment of read-only member 'len'
Is there a function I can use to set skb->len or do I need to poke
around the kernel code and modify this member to be read-write. I
accept the fact that what I'm doing is probably a hack, but I would like
to get this module working first, then make it well coded second.
Thanks in advance for any advice,
Fred