Adrien Mazarguil cd9ea11454 net/mlx5: make Rx queue reinitialization safer
The primary purpose of rxq_rehash() function is to stop and restart
reception on a queue after re-posting buffers. This may fail if the array
that temporarily stores existing buffers for reuse cannot be allocated.

Update rxq_rehash() to work on the target queue directly (not through a
template copy) and avoid this allocation.

rxq_alloc_elts() is modified accordingly to take buffers from an existing
queue directly and update their refcount.

Unlike rxq_rehash(), rxq_setup() must work on a temporary structure but
should not allocate new mbufs from the pool while reinitializing an
existing queue. This is achieved by using the refcount-aware
rxq_alloc_elts() before overwriting queue data.

Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Signed-off-by: Vasily Philipov <vasilyf@mellanox.com>
2016-06-27 16:17:52 +02:00
2016-06-27 16:17:52 +02:00
2016-06-27 16:17:52 +02:00
2016-06-29 13:33:01 +02:00
2016-06-20 17:21:54 +02:00
2016-04-11 23:56:34 +02:00
2013-03-07 10:57:42 +01:00
2015-05-22 15:51:38 +02:00
2013-07-25 14:43:06 +02:00
2016-06-20 17:21:55 +02:00
2014-06-11 00:29:34 +02:00
2015-12-13 22:06:58 +01:00

DPDK is a set of libraries and drivers for fast packet processing.
It supports many processor architectures and both FreeBSD and Linux.

The DPDK uses the Open Source BSD license for the core libraries and
drivers. The kernel components are GPLv2 licensed.

Please check the doc directory for release notes,
API documentation, and sample application information.

For questions and usage discussions, subscribe to: users@dpdk.org
Report bugs and issues to the development mailing list: dev@dpdk.org
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