linux-kernel - [PATCH bpf v6 0/2] xdp: fix hang while unregistering device bound to xdp socket

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Date:   Fri, 28 Jun 2019 11:04:05 +0300
From:   Ilya Maximets <i.maximets@...sung.com>
To:     netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        xdp-newbies@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Björn Töpel <bjorn.topel@...el.com>,
        Magnus Karlsson <magnus.karlsson@...el.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Ilya Maximets <i.maximets@...sung.com>
Subject: [PATCH bpf v6 0/2] xdp: fix hang while unregistering device bound
 to xdp socket

Version 6:

    * Better names for socket state.

Version 5:

    * Fixed incorrect handling of rtnl_lock.

Version 4:

    * 'xdp_umem_clear_dev' exposed to be used while unregistering.
    * Added XDP socket state to track if resources already unbinded.
    * Splitted in two fixes.

Version 3:

    * Declaration lines ordered from longest to shortest.
    * Checking of event type moved to the top to avoid unnecessary
      locking.

Version 2:

    * Completely re-implemented using netdev event handler.

Ilya Maximets (2):
  xdp: hold device for umem regardless of zero-copy mode
  xdp: fix hang while unregistering device bound to xdp socket

 include/net/xdp_sock.h |  5 +++
 net/xdp/xdp_umem.c     | 21 +++++-----
 net/xdp/xdp_umem.h     |  1 +
 net/xdp/xsk.c          | 87 ++++++++++++++++++++++++++++++++++++------
 4 files changed, 93 insertions(+), 21 deletions(-)

-- 
2.17.1