[dpdk-dev] [PATCH v3 14/61] net/qede/base: update MFW when default MTU is changed

[Rasesh Mody]

Send mailbox command to Management FW when MTU changes.

Signed-off-by: Rasesh Mody <rasesh.mody at cavium.com>
---
 drivers/net/qede/base/ecore_dev.c |   11 +++++++++++
 drivers/net/qede/base/ecore_mcp.c |    3 ---
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/net/qede/base/ecore_dev.c b/drivers/net/qede/base/ecore_dev.c
index 7a501bb..13e13ba 100644
--- a/drivers/net/qede/base/ecore_dev.c
+++ b/drivers/net/qede/base/ecore_dev.c
@@ -1629,6 +1629,7 @@ enum _ecore_status_t ecore_hw_init(struct ecore_dev *p_dev,
 {
 	enum _ecore_status_t rc = ECORE_SUCCESS, mfw_rc;
 	u32 load_code, param, drv_mb_param;
+	bool b_default_mtu = true;
 	struct ecore_hwfn *p_hwfn;
 	int i;
 
@@ -1648,6 +1649,12 @@ enum _ecore_status_t ecore_hw_init(struct ecore_dev *p_dev,
 	for_each_hwfn(p_dev, i) {
 		struct ecore_hwfn *p_hwfn = &p_dev->hwfns[i];
 
+		/* If management didn't provide a default, set one of our own */
+		if (!p_hwfn->hw_info.mtu) {
+			p_hwfn->hw_info.mtu = 1500;
+			b_default_mtu = false;
+		}
+
 		if (IS_VF(p_dev)) {
 			p_hwfn->b_int_enabled = 1;
 			continue;
@@ -1776,6 +1783,10 @@ enum _ecore_status_t ecore_hw_init(struct ecore_dev *p_dev,
 			return rc;
 		}
 
+		if (!b_default_mtu)
+			ecore_mcp_ov_update_mtu(p_hwfn, p_hwfn->p_main_ptt,
+						p_hwfn->hw_info.mtu);
+
 		rc = ecore_mcp_ov_update_driver_state(p_hwfn,
 						      p_hwfn->p_main_ptt,
 						ECORE_OV_DRIVER_STATE_DISABLED);
diff --git a/drivers/net/qede/base/ecore_mcp.c b/drivers/net/qede/base/ecore_mcp.c
index 8720ae7..0338576 100644
--- a/drivers/net/qede/base/ecore_mcp.c
+++ b/drivers/net/qede/base/ecore_mcp.c
@@ -1438,9 +1438,6 @@ enum _ecore_status_t ecore_mcp_fill_shmem_func_info(struct ecore_hwfn *p_hwfn,
 
 	info->mtu = (u16)shmem_info.mtu_size;
 
-	if (info->mtu == 0)
-		info->mtu = 1500;
-
 	DP_VERBOSE(p_hwfn, (ECORE_MSG_SP | ECORE_MSG_IFUP),
 		   "Read configuration from shmem: pause_on_host %02x"
 		    " protocol %02x BW [%02x - %02x]"
-- 
1.7.10.3