diff options
| author |   Changqian Wang <changqwa@cisco.com> | 2019-10-18 17:13:13 +0800 |
|---|---|---|
| committer |   Andrew Yourtchenko <ayourtch@gmail.com> | 2019-10-31 12:17:09 +0000 |
| commit | 709375e7553fe24fea3b89f5eacf9081cfea0247 (patch) | |
| tree | 2456ac8a5d5eb135c8df93199f13dad0dfd298f8 /src/plugins/memif | |
| parent | f3ecd4c02938145cd5d072d47df0750a518e7581 (diff) | |
memif: memif buffer leaks during disconnecting zero copy interface.
code added to free the zero copy interface rx/tx queue buffers during disconnecting.
As ddc9eb4 find the last official solution introduced core in ut. This does not.
Type: fix
Signed-off-by: Changqian Wang <changqwa@cisco.com>
Change-Id: I971ee164e6d4331a85feb9e65d6702d771c86985
(cherry picked from commit 00b2d74d1f58b9357e8d955ad7410fb608490904)
Diffstat (limited to 'src/plugins/memif')
| -rw-r--r-- | src/plugins/memif/memif.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/plugins/memif/memif.c b/src/plugins/memif/memif.c index c2df8d3b12e..05a7f83b3b1 100644 --- a/src/plugins/memif/memif.c +++ b/src/plugins/memif/memif.c @@ -65,6 +65,24 @@ memif_queue_intfd_close (memif_queue_t * mq) } } +static void +memif_disconnect_free_zc_queue_buffer (memif_queue_t * mq, u8 is_rx) +{ + vlib_main_t *vm = vlib_get_main (); + u16 ring_size, n_slots, mask, start; + + ring_size = 1 << mq->log2_ring_size; + mask = ring_size - 1; + n_slots = mq->ring->head - mq->last_tail; + start = mq->last_tail & mask; + if (is_rx) + vlib_buffer_free_from_ring (vm, mq->buffers, start, ring_size, n_slots); + else + vlib_buffer_free_from_ring_no_next (vm, mq->buffers, start, ring_size, + n_slots); + vec_free (mq->buffers); +} + void memif_disconnect (memif_if_t * mif, clib_error_t * err) { @@ -126,10 +144,28 @@ memif_disconnect (memif_if_t * mif, clib_error_t * err) memif_log_warn (mif, "Unable to unassign interface %d, queue %d: rc=%d", mif->hw_if_index, i, rv); + if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY) + { + memif_disconnect_free_zc_queue_buffer(mq, 1); + } mq->ring = 0; } } + /* *INDENT-OFF* */ + vec_foreach_index (i, mif->tx_queues) + { + mq = vec_elt_at_index (mif->tx_queues, i); + if (mq->ring) + { + if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY) + { + memif_disconnect_free_zc_queue_buffer(mq, 0); + } + } + mq->ring = 0; + } + /* free tx and rx queues */ vec_foreach (mq, mif->rx_queues) memif_queue_intfd_close (mq); |