[dpdk-dev] [PATCH RFC 2/3] net/af_xdp: Use recvfrom() instead of poll()

[Ciara Loftus]

poll() is more expensive and requires more tuning
when used with the upcoming busy polling functionality.

Signed-off-by: Ciara Loftus <ciara.lof...@intel.com>
---
 drivers/net/af_xdp/rte_eth_af_xdp.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/af_xdp/rte_eth_af_xdp.c 
b/drivers/net/af_xdp/rte_eth_af_xdp.c
index b51db90204..34b15aa3d0 100644
--- a/drivers/net/af_xdp/rte_eth_af_xdp.c
+++ b/drivers/net/af_xdp/rte_eth_af_xdp.c
@@ -263,9 +263,9 @@ af_xdp_rx_zc(void *queue, struct rte_mbuf **bufs, uint16_t 
nb_pkts)
        if (nb_pkts == 0) {
 #if defined(XDP_USE_NEED_WAKEUP)
                if (xsk_ring_prod__needs_wakeup(fq))
-                       (void)poll(rxq->fds, 1, 1000);
+                       recvfrom(xsk_socket__fd(rxq->xsk), NULL, 0,
+                               MSG_DONTWAIT, NULL, NULL);
 #endif
-
                return 0;
        }
 
@@ -336,7 +336,8 @@ af_xdp_rx_cp(void *queue, struct rte_mbuf **bufs, uint16_t 
nb_pkts)
        if (nb_pkts == 0) {
 #if defined(XDP_USE_NEED_WAKEUP)
                if (xsk_ring_prod__needs_wakeup(fq))
-                       (void)poll(rxq->fds, 1, 1000);
+                       recvfrom(xsk_socket__fd(rxq->xsk), NULL, 0,
+                               MSG_DONTWAIT, NULL, NULL);
 #endif
                return 0;
        }
-- 
2.17.1