DPDK rings must have a power-of-two size.
Signed-off-by: Daniele Di Proietto <[email protected]>
---
lib/netdev-dpdk.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c
index b45e367..a779833 100644
--- a/lib/netdev-dpdk.c
+++ b/lib/netdev-dpdk.c
@@ -125,6 +125,8 @@ static const struct rte_eth_txconf tx_conf = {
enum { MAX_RX_QUEUE_LEN = 192 };
enum { MAX_TX_QUEUE_LEN = 384 };
+enum { DPDK_RING_SIZE = 256 };
+BUILD_ASSERT_DECL(IS_POW2(DPDK_RING_SIZE));
enum { DRAIN_TSC = 200000ULL };
static int rte_eal_init_ret = ENODEV;
@@ -1236,7 +1238,7 @@ dpdk_ring_create(const char dev_name[], unsigned int
port_no,
return -err;
}
- ivshmem->cring_tx = rte_ring_create(ring_name, MAX_RX_QUEUE_LEN, SOCKET0,
0);
+ ivshmem->cring_tx = rte_ring_create(ring_name, DPDK_RING_SIZE, SOCKET0, 0);
if (ivshmem->cring_tx == NULL) {
rte_free(ivshmem);
return ENOMEM;
@@ -1247,7 +1249,7 @@ dpdk_ring_create(const char dev_name[], unsigned int
port_no,
return -err;
}
- ivshmem->cring_rx = rte_ring_create(ring_name, MAX_RX_QUEUE_LEN, SOCKET0,
0);
+ ivshmem->cring_rx = rte_ring_create(ring_name, DPDK_RING_SIZE, SOCKET0, 0);
if (ivshmem->cring_rx == NULL) {
rte_free(ivshmem);
return ENOMEM;
--
2.0.1
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