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netdev-dpdk: Remove limit on maximum descriptors count.

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Using larger rxq can be beneficial in highly bursty setups.
Remove the artificial limit on the count of descriptors in rxq and txq.
The device driver will limit the values in any case.

Reported-at: https://issues.redhat.com/browse/FDP-1415
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
This commit is contained in:
David Marchand
2025-06-19 17:56:33 +02:00
committed by Ilya Maximets
parent edecb74043
commit 6090603703
3 changed files with 8 additions and 11 deletions
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6
lib/netdev-dpdk.c
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@@ -133,8 +133,6 @@ BUILD_ASSERT_DECL((MAX_NB_MBUF / ROUND_DOWN_POW2(MAX_NB_MBUF / MIN_NB_MBUF))
#define NIC_PORT_DEFAULT_RXQ_SIZE 2048
/* Default size of Physical NIC TXQ */
#define NIC_PORT_DEFAULT_TXQ_SIZE 2048
/* Maximum size of Physical NIC Queues */
#define NIC_PORT_MAX_Q_SIZE 4096
#define OVS_VHOST_MAX_QUEUE_NUM 1024 /* Maximum number of vHost TX queues. */
#define OVS_VHOST_QUEUE_MAP_UNKNOWN (-1) /* Mapping not initialized. */
@@ -2252,9 +2250,7 @@ dpdk_process_queue_size(struct netdev *netdev, const struct smap *args,
queue_size = new_requested_size;
/* Check for OVS limits. */
if (queue_size <= 0 || queue_size > NIC_PORT_MAX_Q_SIZE
|| !is_pow2(queue_size)) {
if (queue_size <= 0 || !is_pow2(queue_size)) {
queue_size = default_size;
}