net/bnxt: fix writing MTU to FW

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")
Cc: stable@dpdk.org
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 3eedd08..c777c73 100644 (file)
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -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);