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[v2,2/3] net/mlx5: use API to set max LRO packet size

Message ID 1ae81b8df647775019550e4ef3904aed745a2afd.1573039466.git.dekelp@mellanox.com (mailing list archive)
State Superseded, archived
Delegated to: Ferruh Yigit
Headers show
Series support API to set max LRO packet size | expand

Checks

Context Check Description
ci/Intel-compilation fail Compilation issues
ci/checkpatch success coding style OK

Commit Message

Dekel Peled Nov. 6, 2019, 11:34 a.m. UTC
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 <dekelp@mellanox.com>
---
 doc/guides/nics/mlx5.rst    | 2 ++
 drivers/net/mlx5/mlx5_rxq.c | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

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;