return num_rx;
}
+/*
+ * Check if there is an available frame in the ring
+ */
+static inline bool
+tx_ring_status_available(uint32_t tp_status)
+{
+ /*
+ * We eliminate the timestamp status from the packet status.
+ * This should only matter if timestamping is enabled on the socket,
+ * but there is a bug in the kernel which is fixed in newer releases.
+ *
+ * See the following kernel commit for reference:
+ * commit 171c3b151118a2fe0fc1e2a9d1b5a1570cfe82d2
+ * net: packetmmap: fix only tx timestamp on request
+ */
+ tp_status &= ~(TP_STATUS_TS_SOFTWARE | TP_STATUS_TS_RAW_HARDWARE);
+
+ return tp_status == TP_STATUS_AVAILABLE;
+}
+
/*
* Callback to handle sending packets through a real NIC.
*/
}
/* point at the next incoming frame */
- if ((ppd->tp_status != TP_STATUS_AVAILABLE) &&
- (poll(&pfd, 1, -1) < 0))
+ if (!tx_ring_status_available(ppd->tp_status) &&
+ poll(&pfd, 1, -1) < 0)
break;
/* copy the tx frame data */
goto error;
}
+ if (qdisc_bypass) {
#if defined(PACKET_QDISC_BYPASS)
- rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
- &qdisc_bypass, sizeof(qdisc_bypass));
- if (rc == -1) {
- PMD_LOG_ERRNO(ERR,
- "%s: could not set PACKET_QDISC_BYPASS on AF_PACKET socket for %s",
- name, pair->value);
- goto error;
- }
-#else
- RTE_SET_USED(qdisc_bypass);
+ rc = setsockopt(qsockfd, SOL_PACKET, PACKET_QDISC_BYPASS,
+ &qdisc_bypass, sizeof(qdisc_bypass));
+ if (rc == -1) {
+ PMD_LOG_ERRNO(ERR,
+ "%s: could not set PACKET_QDISC_BYPASS on AF_PACKET socket for %s",
+ name, pair->value);
+ goto error;
+ }
#endif
+ }
rc = setsockopt(qsockfd, SOL_PACKET, PACKET_RX_RING, req, sizeof(*req));
if (rc == -1) {