I suspect this is not the final patch, but suffices for now to stop excessive inflation of cwnd on the first ACK when transistioning from slow-start to congestion avoidance.
The guidance given was that t_epoch should be reset at the time cc transitions from slow-start to cong-avoidance.
However, I would like to revisit this anew, once the major overhaul in D41715 is in...

• do max(1, div) instead max(maxseg, cwnd)/div

max(div, 1) prior of outer division.

• rebase main

• rebase main

• rebase main

• rebase main

• delta to D43355_sack_after_rto

• rebase to main

• rebase main

Better revert to the prior state (with tcp_timer_stop() in tcp_discardcb()) - D43855

• stop timers instead

• split the MPASS checks

• leave scoreboard for another commit

• clear scoreboard in other instances as well

• tcp: stop timers and clean scoreboard when in tcp_close()

the hook part looks fine; won't comment on the vnet aspects...

• expand rfc5681 rto ssthresh calc to all relevant places.
• and also in rack

This allows the core to be generated, and kgdb to recognize the it, but I could still not extract useful info thereafter with kgdb (cross platform amd64 / powerpc).

• rebase main

• rebase main

• rebase to main

• rebase main

• rebase main

no real lro stuff happening in the base stack.

• rebase to main

• break lines at 80
• compact two consecutive if statements into one

• remove default: when no special action is necessary
• place statemens after case: in new line
• add /* FALLTHROUGH */ comments per style(9)

• properly initialize maxseg again

• go back to passing a pointer but don't touch body of functions

• remove default case, as falling through and returning is the correct action.

• rebase and align

• rebase to main