[dpdk-dev] [PATCH 04/16] net/bnxt: fix to write the correct MTU to FW

[Somnath Kotur]

From: Ajit Khaparde <ajit.khaparde at broadcom.com>

We are currently writing the MAX supported MTU size even though
the MTU passed by the application is a different value.
Configure the application specified MTU instead.

Fixes: b7778e8a1c00 ("net/bnxt: refactor to properly allocate resources for PF/VF")
Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur at broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur at broadcom.com>
---
 drivers/net/bnxt/bnxt_hwrm.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index ae26b30..c777c73 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -860,7 +860,7 @@ int bnxt_hwrm_func_reserve_vf_resc(struct bnxt *bp, bool test)
 		req.num_l2_ctxs = rte_cpu_to_le_16(BNXT_VF_RSV_NUM_L2_CTX);
 		req.num_vnics = rte_cpu_to_le_16(BNXT_VF_RSV_NUM_VNIC);
 	} else if (bp->vf_resv_strategy ==
-		   HWRM_FUNC_RESOURCE_QCAPS_OUTPUT_VF_RESV_STRATEGY_MAXIMAL)
+		   HWRM_FUNC_RESOURCE_QCAPS_OUTPUT_VF_RESV_STRATEGY_MAXIMAL) {
 		enables |= HWRM_FUNC_VF_CFG_INPUT_ENABLES_NUM_RSSCOS_CTXS;
 		req.num_rsscos_ctxs = rte_cpu_to_le_16(bp->max_rsscos_ctx);
 	}
@@ -2956,7 +2956,8 @@ static int bnxt_hwrm_pf_func_cfg(struct bnxt *bp, int tx_rings)
 	}
 
 	req.flags = rte_cpu_to_le_32(bp->pf.func_cfg_flags);
-	req.mtu = rte_cpu_to_le_16(BNXT_MAX_MTU);
+	req.mtu = rte_cpu_to_le_16(RTE_MIN(bp->eth_dev->data->mtu,
+					   BNXT_MAX_MTU)); //FW adds hdr sizes
 	req.mru = rte_cpu_to_le_16(BNXT_VNIC_MRU(bp->eth_dev->data->mtu));
 	req.num_rsscos_ctxs = rte_cpu_to_le_16(bp->max_rsscos_ctx);
 	req.num_stat_ctxs = rte_cpu_to_le_16(bp->max_stat_ctx);
-- 
1.8.3.1