[dpdk-dev] [PATCH] net/mlx: remove link update lock
Adrien Mazarguil
adrien.mazarguil at 6wind.com
Mon Jan 16 15:03:23 CET 2017
On Wed, Jan 11, 2017 at 05:44:01PM +0100, Olivier Matz wrote:
> From: Matthieu Ternisien d'Ouville <matthieu.tdo at 6wind.com>
>
> Retrieving link status information through the link update callback should
> be quick and non-blocking.
>
> Mellanox PMDs retrieve this information through ioctl() calls on the
> related kernel netdevice. This appears to take a long time to
> complete and may cause significant slowdowns in applications.
>
> While these system calls cannot be accelerated, removing the lock on the
> private structure allows applications to perform other control operations
> from separate threads in the meantime. This function remains safe without
> locking as it does not write the private structure, it is only used to
> retrieve the name of the netdevice.
>
> Signed-off-by: Matthieu Ternisien d'Ouville <matthieu.tdo at 6wind.com>
> Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
> ---
> drivers/net/mlx4/mlx4.c | 32 ++++++--------------------------
> drivers/net/mlx5/mlx5.c | 2 +-
> drivers/net/mlx5/mlx5.h | 1 -
> drivers/net/mlx5/mlx5_ethdev.c | 30 ++++++------------------------
> 4 files changed, 13 insertions(+), 52 deletions(-)
Acked-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>
--
Adrien Mazarguil
6WIND
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