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multipath-tcp / mptcp

⚠️⚠️⚠️ Deprecated 🚫 Out-of-tree Linux Kernel implementation of MultiPath TCP. 👉 Use https://github.com/multipath-tcp/mptcp_net-next repo instead ⚠️⚠️⚠️
https://github.com/multipath-tcp/mptcp_net-next
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Can MPTCP_SCHED_DATA_SIZE be changed? #395

Closed ytxing closed 3 years ago

ytxing commented 4 years ago

I am trying to put some other bytes in redsched_cb, which is

(struct redsched_cb *)&tp->mpcb->mptcp_sched[0];

and of course it will exceed the limit of 

#define MPTCP_SCHED_DATA_SIZE 8
    u8 mptcp_sched[MPTCP_SCHED_DATA_SIZE] __aligned(8);

thus I change it into 

#define MPTCP_SCHED_DATA_SIZE 16
    u8 mptcp_sched[MPTCP_SCHED_DATA_SIZE] __aligned(8);

make &make install is successful, but it seems that when it runs the code that change the new redsched_cb, the kernel crashes.

I am wondering if it is possible to have extra space in the mpcb? Please help! Good day :D

cpaasch commented 4 years ago

What is your crash-log? Is the only change the increase in size of MPTCP_SCHED_DATA_SIZE?