diff options
| author |   Damjan Marion <damarion@cisco.com> | 2021-05-12 14:43:21 +0200 |
|---|---|---|
| committer | Damjan Marion <damarion@cisco.com> | 2021-05-12 15:46:59 +0200 |
| commit | 8b4d474abd62c623502ad9a4a279a9b4535ca0c1 (patch) | |
| tree | a820d9863b84a37bed82801e02df635ee042ff76 | |
| parent | ee32d66802a39f97643e2de263390ddfa5aa09f6 (diff) | |
avf: avoid eating our own tail
This happens in case we are not able to refill ring with new buffers.
Type: fix
Change-Id: I727e55c5b8482d9b8aeb4a9933a9a755fe21e55f
Signed-off-by: Damjan Marion <damarion@cisco.com>
| -rw-r--r-- | src/plugins/avf/input.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/plugins/avf/input.c b/src/plugins/avf/input.c index 6e437da2a16..4d037b44a28 100644 --- a/src/plugins/avf/input.c +++ b/src/plugins/avf/input.c @@ -428,6 +428,9 @@ no_more_desc: rxq->next = next; rxq->n_enqueued -= n_rx_packets + n_tail_desc; + /* avoid eating our own tail */ + rxq->descs[(next + rxq->n_enqueued) & mask].qword[1] = 0; + #if defined(CLIB_HAVE_VEC256) || defined(CLIB_HAVE_VEC128) or_qw1 |= or_q1x4[0] | or_q1x4[1] | or_q1x4[2] | or_q1x4[3]; #endif |