udp: Simplify checking of epoll event bits

udp_{listen,reply}_sock_handler() can accept both EPOLLERR and EPOLLIN
events.  However, unlike most epoll event handlers we don't check the
event bits right there.  EPOLLERR is checked within udp_sock_errs() which
we call unconditionally.  Checking EPOLLIN is still more buried: it is
checked within both udp_sock_recv() and udp_vu_sock_recv().

We can simplify the logic and pass less extraneous parameters around by
moving the checking of the event bits to the top level event handlers.

This makes udp_{buf,vu}_{listen,reply}_sock_handler() no longer general
event handlers, but specific to EPOLLIN events, meaning new data.  So,
rename those functions to udp_{buf,vu}_{listen,reply}_sock_data() to better
reflect their function.

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