We have:
static inline enum ib_mtu iboe_get_mtu(int mtu)
{
/*
* reduce IB headers from effective IBoE MTU. 28 stands for
* atomic header which is the biggest possible header after BTH
*/
mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28;
...
28 bytes is the size of the AtomicETH header. But couldn't we have a
packet with both AtomicETH and XRCETH (4 more bytes)?
- R.
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