tcp_splice: Simplify EPOLLRDHUP / eof / FIN handling

There are two ways we can tell one of our sockets has received a FIN.  We
can either see an EPOLLRDHUP epoll event, or we can get a zero-length read
(EOF) on the socket.  We currently use both, in a mildly confusing way:
we only set the FIN_RCVD() flag based on the EPOLLRDHUP event, but then
some other close out logic is based on seeing an EOF.

Simplify this by setting the flag based on only the EOF.  To make sure we
don't miss an event if we get an EPOLLRDHUP with no data, we trigger the
forwarding path for EPOLLRDHUP as well as EPOLLIN.

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