This patch implements use of the API for LRO aggregated packet
max size.
Rx queue create is updated to use the relevant configuration.
Documentation is updated accordingly.
Signed-off-by: Dekel Peled <dek...@mellanox.com>
---
doc/guides/nics/mlx5.rst | 2 ++
drivers/net/mlx5/mlx5_rxq.c | 4 +++-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index 4f1093f..3b10daf 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -207,6 +207,8 @@ Limitations
- KEEP_CRC offload cannot be supported with LRO.
- The first mbuf length, without head-room, must be big enough to include
the
TCP header (122B).
+ - Rx queue with LRO offload enabled, receiving a non-LRO packet, can forward
+ it with size limited to max LRO size, not to max RX packet length.
Statistics
----------
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index 9423e7b..c725e14 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -1772,7 +1772,9 @@ struct mlx5_rxq_ctrl *
dev->data->dev_conf.rxmode.offloads;
unsigned int lro_on_queue = !!(offloads & DEV_RX_OFFLOAD_TCP_LRO);
const int mprq_en = mlx5_check_mprq_support(dev) > 0;
- unsigned int max_rx_pkt_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
+ unsigned int max_rx_pkt_len = lro_on_queue ?
+ dev->data->dev_conf.rxmode.max_lro_pkt_size :
+ dev->data->dev_conf.rxmode.max_rx_pkt_len;
unsigned int non_scatter_min_mbuf_size = max_rx_pkt_len +
RTE_PKTMBUF_HEADROOM;
unsigned int max_lro_size = 0;
--
1.8.3.1
