window scaling

[a.ranu@xxxxxxxxxxxxxxxxxxxx]

hi...

i am writing a module that modifies the advertised window in every outgoing 
packet with the help of ip connection tracking, if it is larger than the 
window i calculated (say x - not scaled, just in bytes)

would the following code be correct?

x_scaled = x >> (*pskb)->sk->tp_pinfo.af_tcp.rcv_wscale;
window_already_in_pkt = ntohs((*pskb)->h.th->window);

if (window_already_in_pkt > x_scaled)
        tcph->window = x_scaled;

a reply would be really appreciated

Asmeet.






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a.ranu@xxxxxxxxxxxxxxxxxxxx