Hello,
I am not familiar with the details of checksum algorithm of ip headers;
My question is this:
When switching between source and dest addresses in an IP header of an
IP packet - should the checksum of the ip header be changed ?
Or is the checksum algorithm indifferent to which is the IP sr
17/06, Evgeniy Polyakov <[EMAIL PROTECTED]> wrote:
On Thu, Aug 17, 2006 at 05:37:15PM +0300, John Que ([EMAIL PROTECTED]) wrote:
> Hello,
> I am using NF_HOOKS (a "PRE_ROUTING" hook).
> When I try to print the time stamps (sec and usec) of skb packets
> which I recieve
>
implications for adding this method
which can create troubles ?
I must say that I am NOT
On 8/17/06, Evgeniy Polyakov <[EMAIL PROTECTED]> wrote:
On Thu, Aug 17, 2006 at 05:37:15PM +0300, John Que ([EMAIL PROTECTED]) wrote:
> Hello,
> I am using NF_HOOKS (a "PRE_ROUTING"
Hello,
I am using NF_HOOKS (a "PRE_ROUTING" hook).
When I try to print the time stamps (sec and usec) of skb packets
which I recieve
in the hook callback I get 0. Other skb fileds are correct.
According to my understanding, the time stamp should be updated
when the packet is received. Isn't it so
wards when running
cat /proc/iomem?
As I understand, indeed this is the case.
Regards,
John
On 7/2/06, Jeff Garzik <[EMAIL PROTECTED]> wrote:
On Sun, Jul 02, 2006 at 10:24:10AM +0300, John Que wrote:
> Hello,
>
> I had noticed that there are machines where
> if I ran cat /pro
Hello,
I had noticed that there are machines where
if I ran cat /proc/iomem I see one I/O memory region for the NIC
I am using; while there are other machines where
I see 2 regions for the NIC I/O memory.
For example, on a machine with e1000 NIC adapter,
I see the following 2 I/O memory regions
r never will request an irq"?
-- John
On 6/4/06, Oliver Neukum <[EMAIL PROTECTED]> wrote:
Am Sonntag, 4. Juni 2006 18:29 schrieb John Que:
> I had noticed that the zd1211 driver does call request_irq() in zd1205_open(),
> file zd1205.c; grepping for request_irq() in the rewrite dr
Hello,
I must confess I don't know much about the ZyDas driver and the rewrite
dirver, but folliowing this post I looked a bit at the code (of both
zd1211 and the rewrite version) and I have a little question; this may
be
seen as a (little) off topic but I will be happy if somebody will
raise th
for such examples and did not get much.
I saw that the zebra project and iproute uses
netlinks but it is complex.,
TIA
John
On 4/25/06, Andi Kleen <[EMAIL PROTECTED]> wrote:
> On Tuesday 25 April 2006 16:44, John Que wrote:
> > Thanks a lot !
> >
> > I had tried the s
do I specify that certain dest IP ?
Regards,
John
On 4/25/06, Andi Kleen <[EMAIL PROTECTED]> wrote:
> On Tuesday 25 April 2006 09:31, John Que wrote:
> > Hello,
> > What is the right way to determine on which interface card
> > (eth0 or eth1) will a packet be sen
Hello,
What is the right way to determine on which interface card
(eth0 or eth1) will a packet be sent (according to the dest IP)?
I have a machine with two NICS (eth0 and eth1).
I have 2 different gateways.
I need to know on which interface (eth0 or eth1) will the
packet be send according to the
Hello,
I wonder if can anybody can say what is the advantages/disadvantages
of the linux networking kernel layer comapred to STREAMS network layer
(of Solaris for examples).
>From my experience up to day , I am used to it that the Linux took the best
of all worlds. I don't know very much about
Hello,
Thanks.
I use 2.6.11-1 kernel ,Fedora Core 4.
Here is the program I use and the error I get after
I send one UDP packet to this machine on the port it listens on ,9000.
(Note : input.txt is a nonempty small input file.)
#include
#include
#include
#include
#include
#include
#in
ECTED]> wrote:
> On Sat, Oct 29, 2005 at 03:39:30PM +0200, John Que wrote:
> > Hello,
> > I have written a module which uses NF_HOOKS for diverting packets to
> > a different destination.
> >
> > My hook uses NF_IP_PRE_ROUTING.
> >
> > I ca
Hello,
Thanks a lot for your answer !
Following your answer I did some reading in LDD3
I want to verify that I understood the interrupts mechanism right:
NF_IP_FORWARD
On 10/30/05, Harald Welte <[EMAIL PROTECTED]> wrote:
> On Sat, Oct 29, 2005 at 03:39:30PM +0200, John Que wrote:
Hello,
Is it possible to use the sendfile system call with
UDP sockets in linux kernel ?
I saw in net/ipv4/udp.c a comment made by Hirokazu Takahashi,
which says "sendfile() on UDP works now."
(this is in the linux 2.6.* kernels).
But when I am trying to write a user space program
which tries u
Hello,
One of the possible policies for skb->ip_summed is CHECKSUM_HW.
In this case the device can perform checksums in hardware.
According to Linux Device Drivers 3, an example of a such network card is
the SPARC HME interface.
I looked a bit at the code (it's in /drivers/net/sunhme.c)
Hello,
I wrote a simple , user space program (in "C") which opens 400
UDP sockets ; each of them sends a message.
I saw in the sniffer that many packets are not sent.
I am working with 2.4.20-8 kernel.
I am creating 400 DIFFERENT instances of socket
in the usual way : socket(AF_INET,SOCK_
18 matches
Mail list logo
