[dpdk-dev] [PATCH] ethdev: fix memory leak on removing eth rxtx callback

[万乐冰]

cc konstantin.ananyev

konstantin.ananyev, please help.

Ferruh Yigit <ferruh.yigit at intel.com> 于2018年11月21日周三 下午10:48写道：

> On 11/21/2018 1:11 PM, wanlebing wrote:
> > eth rxtx callback is dynamically allocated using rte_zmalloc()
> > but not released. Fix it by calling rte_free() to free callback
> > when removing rxtx callback.
>
> I guess they are not freed intentionally because there is no safe way to
> do it.
> I remember Konstantin sent an RFC in the past to rework the callbacks,
> cc'ed him
> for more details.
>
> >
> > Signed-off-by: wanlebing <wanlebing at didichuxing.com>
> > Signed-off-by: wanlebing <wanlebing at gmail.com>
> > ---
> >  lib/librte_ethdev/rte_ethdev.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/lib/librte_ethdev/rte_ethdev.c
> b/lib/librte_ethdev/rte_ethdev.c
> > index 5f858174b..f00311047 100644
> > --- a/lib/librte_ethdev/rte_ethdev.c
> > +++ b/lib/librte_ethdev/rte_ethdev.c
> > @@ -3926,6 +3926,7 @@ rte_eth_remove_rx_callback(uint16_t port_id,
> uint16_t queue_id,
> >               if (cb == user_cb) {
> >                       /* Remove the user cb from the callback list. */
> >                       *prev_cb = cb->next;
> > +                     rte_free(cb);
> >                       ret = 0;
> >                       break;
> >               }
> > @@ -3960,6 +3961,7 @@ rte_eth_remove_tx_callback(uint16_t port_id,
> uint16_t queue_id,
> >               if (cb == user_cb) {
> >                       /* Remove the user cb from the callback list. */
> >                       *prev_cb = cb->next;
> > +                     rte_free(cb);
> >                       ret = 0;
> >                       break;
> >               }
> >
>
>