Change Details

The base stack is not stopping any running tcp timer in tcp_close() but does that only later in tcp_discardcb(). This can result in panics, if close() is issued while TCP is trying to recover packet loss, trying to still retransmit unacknowledged data.

tcp: stop timers and clean scoreboard when in tcp_close() instead of doing that in tcp_discardcb(). A connection in CLOSED state shall not need any timers. As the SACK scoreboard is conceptually an extention of the socket buffer, remove it when the socket buffer goes away with soisdisconnected(). Assert that no timer is rescheduled after that with tcp_timer_activate() and verfiy that this is also the expected state in tcp_discardcb´().

The base stack is not stopping any runningtcp: stop timers and clean scoreboard when in tcp_close() timer in tcp_close() but does that only later ininstead of doing that in tcp_discardcb(). A connection in tcp_discardcb(). This can result in panics,CLOSED state shall not need any timers. ifAs the SACK scoreboard close() is issued while TCP is trying to recoveris conceptually an extention of the socket buffer, remove pait when the socket loss, trying to still retransmitbuffer goes away with soisdisconnected(). unacknowledged dataAssert that no timer is rescheduled after that with tcp_timer_activate() and verfiy that this is also the expected state in tcp_discardcb´().