tcp_splice: Register fds with epoll at flow creation

Register both splice connection sockets with epoll using empty events
(events=0) in tcp_splice_connect(), before initiating the connection.

This allows tcp_splice_epoll_ctl() to always use EPOLL_CTL_MOD, removing
the need to check whether fds are already registered. As a result, the
conditional ADD/MOD logic is no longer needed, simplifying the function.

If the second flow_epoll_set() fails after the first succeeds, we don't
need explicit rollback: tcp_splice_conn_from_sock() sets the CLOSING
flag on error, and conn_flag() handles it by calling epoll_del() for
both sockets.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

0 files changed, 0 insertions, 0 deletions