[dpdk-dev] [PATCH v2 12/15] app/testpmd: support shared Rx queue for MAC fwd

Xueming Li xuemingl at nvidia.com
Wed Aug 11 16:04:14 CEST 2021


From: Xiaoyu Min <jackmin at nvidia.com>

Add support of shared rxq.
If shared rxq is enabled, filter packet by stream according
to mbuf->port value and then fwd it in stream basis (as before).

If shared rxq is not enabled, just fwd it as usual in stream basis.

Signed-off-by: Xiaoyu Min <jackmin at nvidia.com>
---
 app/test-pmd/macfwd.c | 27 ++++++++++-----------------
 1 file changed, 10 insertions(+), 17 deletions(-)

diff --git a/app/test-pmd/macfwd.c b/app/test-pmd/macfwd.c
index 0568ea794d..75fbea16d4 100644
--- a/app/test-pmd/macfwd.c
+++ b/app/test-pmd/macfwd.c
@@ -44,32 +44,18 @@
  * before forwarding them.
  */
 static void
-pkt_burst_mac_forward(struct fwd_stream *fs)
+mac_forward_stream(struct fwd_stream *fs, uint16_t nb_rx,
+		struct rte_mbuf **pkts_burst)
 {
-	struct rte_mbuf  *pkts_burst[MAX_PKT_BURST];
 	struct rte_port  *txp;
 	struct rte_mbuf  *mb;
 	struct rte_ether_hdr *eth_hdr;
 	uint32_t retry;
-	uint16_t nb_rx;
 	uint16_t nb_tx;
 	uint16_t i;
 	uint64_t ol_flags = 0;
 	uint64_t tx_offloads;
-	uint64_t start_tsc = 0;
-
-	get_start_cycles(&start_tsc);
-
-	/*
-	 * Receive a burst of packets and forward them.
-	 */
-	nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
-				 nb_pkt_per_burst);
-	inc_rx_burst_stats(fs, nb_rx);
-	if (unlikely(nb_rx == 0))
-		return;
 
-	fs->rx_packets += nb_rx;
 	txp = &ports[fs->tx_port];
 	tx_offloads = txp->dev_conf.txmode.offloads;
 	if (tx_offloads	& DEV_TX_OFFLOAD_VLAN_INSERT)
@@ -116,8 +102,15 @@ pkt_burst_mac_forward(struct fwd_stream *fs)
 			rte_pktmbuf_free(pkts_burst[nb_tx]);
 		} while (++nb_tx < nb_rx);
 	}
+}
 
-	get_end_cycles(fs, start_tsc);
+/*
+ * Wrapper of real fwd engine.
+ */
+static void
+pkt_burst_mac_forward(struct fwd_stream *fs)
+{
+	return do_burst_fwd(fs, mac_forward_stream);
 }
 
 struct fwd_engine mac_fwd_engine = {
-- 
2.25.1



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