tcp_splice: Force TCP RST on abnormal close conditions

When we need to prematurely close a spliced connection, we use:
    conn_flag(conn, CLOSING);
This does destroy the flow, but does so in the same way as a clean close
from both ends.  That's not what we want in error conditions, or when one
side of the flow has signalled an abnormal exit with an EPOLLHUP event.

Replace all places where we close the connection - except for the happy
path close - with calls to a new tcp_splice_rst() function, which forces
the sockets to emit a TCP RST on each side.

Link: https://bugs.passt.top/show_bug.cgi?id=193
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

0 files changed, 0 insertions, 0 deletions