diff options
| author |   Fan Zhang <roy.fan.zhang@intel.com> | 2022-03-10 14:49:19 +0000 |
|---|---|---|
| committer | Fan Zhang <roy.fan.zhang@intel.com> | 2022-06-15 07:30:38 +0000 |
| commit | 73fdb095b36ce6b780cf6d1a6c20effe2e9a684a (patch) | |
| tree | a8bd15a361baf636c502d7e17b54f5a10abfa381 | |
| parent | 3159d1c2107698b2bdc17dc889088058540f9e10 (diff) | |
dpdk: improve rx burst count per loop
Type: improvement
This patch improves the per dpdk-input loop number of packets
received from the port. The change mimics how packets rx happened
before VPP 22.02/DPDK 21.11: instead of trying to rx huge number
of packets (256) in one go, rx more times with up to 32 packets
max each time.
Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Change-Id: I804dce6d9121ab21b02e53dd0328dc52ac49d80f
(cherry picked from commit a9fe20f4b8f7a9bd65cc8ee1b6a0204af7fc3627)
| -rw-r--r-- | src/plugins/dpdk/device/node.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/plugins/dpdk/device/node.c b/src/plugins/dpdk/device/node.c index d83fa35b177..3ae74e096fc 100644 --- a/src/plugins/dpdk/device/node.c +++ b/src/plugins/dpdk/device/node.c @@ -364,12 +364,13 @@ dpdk_device_input (vlib_main_t * vm, dpdk_main_t * dm, dpdk_device_t * xd, /* get up to DPDK_RX_BURST_SZ buffers from PMD */ while (n_rx_packets < DPDK_RX_BURST_SZ) { - n = rte_eth_rx_burst (xd->port_id, queue_id, - ptd->mbufs + n_rx_packets, - DPDK_RX_BURST_SZ - n_rx_packets); + u32 n_to_rx = clib_min (DPDK_RX_BURST_SZ - n_rx_packets, 32); + + n = rte_eth_rx_burst (xd->port_id, queue_id, ptd->mbufs + n_rx_packets, + n_to_rx); n_rx_packets += n; - if (n < 32) + if (n < n_to_rx) break; } |