[Web10g-user] web10g 2.0.9 and kernel 3.17.4 does not work for me

[Sebastian Zander]

Hi Chris,

I tried the latest web10g version with kernel 3.17.4 and my problem is I 
seem to be unable to get any TCP statistics. I never see any TCP 
connections even if there are established connections.

I downloaded kernel 3.17.4 from kernel.org and applied the web10g kernel 
patch (did apply cleanly). I then enabled estats in the kernel config, 
checked the timestamp option and set the estats_nl to build as module.

The module build didn't actually work, because some symbols are not 
exported. I modified tcp_input.c to export sysctl_tcp_timestamps and 
sysctl_tcp_sack:

int sysctl_tcp_timestamps __read_mostly = 1;
EXPORT_SYMBOL(sysctl_tcp_timestamps);
int sysctl_tcp_window_scaling __read_mostly = 1;
int sysctl_tcp_sack __read_mostly = 1;
EXPORT_SYMBOL(sysctl_tcp_sack);

Then the kernel+modules built without problems. The userland code also 
built without problems.

The new kernel runs fine and I can load the module, e.g. lsmod shows:
 > lsmod | grep stats 

tcp_estats_nl          22713  0
tcp_estats_mib_var     18516  1 tcp_estats_nl

And kernel log shows:
2014-11-27T17:41:18.164573+11:00 newtcp33 kernel: [   33.073585] 
tcp_estats netlink module initialized.

The problem is I never see any connections with web10g-listconns etc. 
Instead of building the web10g module I also compiled it into the main 
kernel but still the same issue.

Am I missing something or does web10g have an issue with this kernel 
version? Any help would be greatly appreciated.

Cheers,

Sebastian

-- 
Sebastian Zander
http://caia.swin.edu.au/cv/szander/