[PATCH net v2] net: marvell: prestera: fix hw structure laid out

Subsystems: marvell prestera ethernet switch driver, networking drivers, the rest

STALE1741d

4 messages, 4 authors, 2021-11-04 · open the first message on its own page

[PATCH net v2] net: marvell: prestera: fix hw structure laid out

From: Volodymyr Mytnyk <hidden>
Date: 2021-11-03 09:54:31

From: Volodymyr Mytnyk <redacted>

- fix structure laid out discussed in:
    [PATCH net-next v4] net: marvell: prestera: add firmware v4.0 support
    https://www.spinics.net/lists/kernel/msg4127689.html

- fix review comments discussed in:
    [PATCH] [-next] net: marvell: prestera: Add explicit padding
    https://www.spinics.net/lists/kernel/msg4130293.html

- fix patchwork issues
- rebase on net master

Reported-by: kernel test robot <redacted>
Fixes: bb5dbf2cc64d ("net: marvell: prestera: add firmware v4.0 support")
Signed-off-by: Volodymyr Mytnyk <redacted>
---
 .../ethernet/marvell/prestera/prestera_ethtool.c   |   3 +-
 .../net/ethernet/marvell/prestera/prestera_hw.c    | 129 +++++++++++----------
 .../net/ethernet/marvell/prestera/prestera_main.c  |   6 +-
 .../net/ethernet/marvell/prestera/prestera_pci.c   |   3 +-
 4 files changed, 75 insertions(+), 66 deletions(-)

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c b/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c
index 6011454dba71..40d5b89573bb 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c

@@ -499,7 +499,8 @@ static void prestera_port_mdix_get(struct ethtool_link_ksettings *ecmd,
 {
 	struct prestera_port_phy_state *state = &port->state_phy;
 
-	if (prestera_hw_port_phy_mode_get(port, &state->mdix, NULL, NULL, NULL)) {
+	if (prestera_hw_port_phy_mode_get(port,
+					  &state->mdix, NULL, NULL, NULL)) {
 		netdev_warn(port->dev, "MDIX params get failed");
 		state->mdix = ETH_TP_MDI_INVALID;
 	}

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_hw.c b/drivers/net/ethernet/marvell/prestera/prestera_hw.c
index 4f5f52dcdd9d..fb0f17c9352f 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_hw.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.c

@@ -180,109 +180,113 @@ struct prestera_msg_common_resp {
 	struct prestera_msg_ret ret;
 };
 
-union prestera_msg_switch_param {
-	u8 mac[ETH_ALEN];
-	__le32 ageing_timeout_ms;
-} __packed;
-
 struct prestera_msg_switch_attr_req {
 	struct prestera_msg_cmd cmd;
 	__le32 attr;
-	union prestera_msg_switch_param param;
-	u8 pad[2];
+	union {
+		__le32 ageing_timeout_ms;
+		struct {
+			u8 mac[ETH_ALEN];
+			u8 __pad[2];
+		};
+	} param;
 };
 
 struct prestera_msg_switch_init_resp {
 	struct prestera_msg_ret ret;
 	__le32 port_count;
 	__le32 mtu_max;
-	u8  switch_id;
-	u8  lag_max;
-	u8  lag_member_max;
 	__le32 size_tbl_router_nexthop;
-} __packed __aligned(4);
+	u8 switch_id;
+	u8 lag_max;
+	u8 lag_member_max;
+};
 
 struct prestera_msg_event_port_param {
 	union {
 		struct {
-			u8 oper;
 			__le32 mode;
 			__le32 speed;
+			u8 oper;
 			u8 duplex;
 			u8 fc;
 			u8 fec;
-		} __packed mac;
+		} mac;
 		struct {
-			u8 mdix;
 			__le64 lmode_bmap;
+			u8 mdix;
 			u8 fc;
+			u8 __pad[2];
 		} __packed phy;
 	} __packed;
-} __packed __aligned(4);
+} __packed;
 
 struct prestera_msg_port_cap_param {
 	__le64 link_mode;
-	u8  type;
-	u8  fec;
-	u8  fc;
-	u8  transceiver;
-};
+	u8 type;
+	u8 fec;
+	u8 fc;
+	u8 transceiver;
+} __packed;
 
 struct prestera_msg_port_flood_param {
 	u8 type;
 	u8 enable;
-};
+	u8 __pad[2];
+} __packed;
 
 union prestera_msg_port_param {
+	__le32 mtu;
+	__le32 speed;
+	__le32 link_mode;
 	u8 admin_state;
 	u8 oper_state;
-	__le32 mtu;
 	u8 mac[ETH_ALEN];
 	u8 accept_frm_type;
-	__le32 speed;
 	u8 learning;
 	u8 flood;
-	__le32 link_mode;
 	u8 type;
 	u8 duplex;
 	u8 fec;
 	u8 fc;
-
 	union {
 		struct {
-			u8 admin:1;
+			u8 admin;
 			u8 fc;
 			u8 ap_enable;
+			u8 __reserved;
 			union {
 				struct {
 					__le32 mode;
-					u8  inband:1;
 					__le32 speed;
-					u8  duplex;
-					u8  fec;
-					u8  fec_supp;
-				} __packed reg_mode;
+					u8 inband;
+					u8 duplex;
+					u8 fec;
+					u8 fec_supp;
+				} reg_mode;
 				struct {
 					__le32 mode;
 					__le32 speed;
-					u8  fec;
-					u8  fec_supp;
-				} __packed ap_modes[PRESTERA_AP_PORT_MAX];
-			} __packed;
-		} __packed mac;
+					u8 fec;
+					u8 fec_supp;
+					u8 __pad[2];
+				} ap_modes[PRESTERA_AP_PORT_MAX];
+			};
+		} mac;
 		struct {
-			u8 admin:1;
-			u8 adv_enable;
 			__le64 modes;
 			__le32 mode;
+			u8 admin;
+			u8 adv_enable;
 			u8 mdix;
-		} __packed phy;
+			u8 __pad;
+		} phy;
 	} __packed link;
 
 	struct prestera_msg_port_cap_param cap;
 	struct prestera_msg_port_flood_param flood_ext;
 	struct prestera_msg_event_port_param link_evt;
-} __packed;
+};
 
 struct prestera_msg_port_attr_req {
 	struct prestera_msg_cmd cmd;

@@ -290,14 +294,12 @@ struct prestera_msg_port_attr_req {
 	__le32 port;
 	__le32 dev;
 	union prestera_msg_port_param param;
-} __packed __aligned(4);
-
+};
 
 struct prestera_msg_port_attr_resp {
 	struct prestera_msg_ret ret;
 	union prestera_msg_port_param param;
-} __packed __aligned(4);
-
+};
 
 struct prestera_msg_port_stats_resp {
 	struct prestera_msg_ret ret;

@@ -322,13 +324,13 @@ struct prestera_msg_vlan_req {
 	__le32 port;
 	__le32 dev;
 	__le16 vid;
-	u8  is_member;
-	u8  is_tagged;
+	u8 is_member;
+	u8 is_tagged;
 };
 
 struct prestera_msg_fdb_req {
 	struct prestera_msg_cmd cmd;
-	u8 dest_type;
+	__le32 flush_mode;
 	union {
 		struct {
 			__le32 port;

@@ -336,11 +338,12 @@ struct prestera_msg_fdb_req {
 		};
 		__le16 lag_id;
 	} dest;
-	u8  mac[ETH_ALEN];
 	__le16 vid;
-	u8  dynamic;
-	__le32 flush_mode;
-} __packed __aligned(4);
+	u8 dest_type;
+	u8 dynamic;
+	u8 mac[ETH_ALEN];
+	u8 __pad[2];
+};
 
 struct prestera_msg_bridge_req {
 	struct prestera_msg_cmd cmd;

@@ -383,7 +386,7 @@ struct prestera_msg_acl_match {
 		struct {
 			u8 key[ETH_ALEN];
 			u8 mask[ETH_ALEN];
-		} __packed mac;
+		} mac;
 	} keymask;
 };

@@ -446,7 +449,8 @@ struct prestera_msg_stp_req {
 	__le32 port;
 	__le32 dev;
 	__le16 vid;
-	u8  state;
+	u8 state;
+	u8 __pad;
 };
 
 struct prestera_msg_rxtx_req {

@@ -497,21 +501,21 @@ union prestera_msg_event_fdb_param {
 
 struct prestera_msg_event_fdb {
 	struct prestera_msg_event id;
-	u8 dest_type;
+	__le32 vid;
 	union {
 		__le32 port_id;
 		__le16 lag_id;
 	} dest;
-	__le32 vid;
 	union prestera_msg_event_fdb_param param;
-} __packed __aligned(4);
+	u8 dest_type;
+};
 
-static inline void prestera_hw_build_tests(void)
+static void prestera_hw_build_tests(void)
 {
 	/* check requests */
 	BUILD_BUG_ON(sizeof(struct prestera_msg_common_req) != 4);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_switch_attr_req) != 16);
-	BUILD_BUG_ON(sizeof(struct prestera_msg_port_attr_req) != 120);
+	BUILD_BUG_ON(sizeof(struct prestera_msg_port_attr_req) != 140);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_port_info_req) != 8);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_vlan_req) != 16);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_fdb_req) != 28);

@@ -528,7 +532,7 @@ static inline void prestera_hw_build_tests(void)
 	/* check responses */
 	BUILD_BUG_ON(sizeof(struct prestera_msg_common_resp) != 8);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_switch_init_resp) != 24);
-	BUILD_BUG_ON(sizeof(struct prestera_msg_port_attr_resp) != 112);
+	BUILD_BUG_ON(sizeof(struct prestera_msg_port_attr_resp) != 132);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_port_stats_resp) != 248);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_port_info_resp) != 20);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_bridge_resp) != 12);

@@ -561,9 +565,9 @@ static int __prestera_cmd_ret(struct prestera_switch *sw,
 	if (err)
 		return err;
 
-	if (__le32_to_cpu(ret->cmd.type) != PRESTERA_CMD_TYPE_ACK)
+	if (ret->cmd.type != __cpu_to_le32(PRESTERA_CMD_TYPE_ACK))
 		return -EBADE;
-	if (__le32_to_cpu(ret->status) != PRESTERA_CMD_ACK_OK)
+	if (ret->status != __cpu_to_le32(PRESTERA_CMD_ACK_OK))
 		return -EINVAL;
 
 	return 0;

@@ -1356,7 +1360,8 @@ int prestera_hw_port_speed_get(const struct prestera_port *port, u32 *speed)
 int prestera_hw_port_autoneg_restart(struct prestera_port *port)
 {
 	struct prestera_msg_port_attr_req req = {
-		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_PHY_AUTONEG_RESTART),
+		.attr =
+		    __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_PHY_AUTONEG_RESTART),
 		.port = __cpu_to_le32(port->hw_id),
 		.dev = __cpu_to_le32(port->dev_id),
 	};

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_main.c b/drivers/net/ethernet/marvell/prestera/prestera_main.c
index 625b40149fac..4369a3ffad45 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_main.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c

@@ -405,7 +405,8 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id)
 
 	err = prestera_port_cfg_mac_write(port, &cfg_mac);
 	if (err) {
-		dev_err(prestera_dev(sw), "Failed to set port(%u) mac mode\n", id);
+		dev_err(prestera_dev(sw),
+			"Failed to set port(%u) mac mode\n", id);
 		goto err_port_init;
 	}

@@ -418,7 +419,8 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id)
 						    false, 0, 0,
 						    port->cfg_phy.mdix);
 		if (err) {
-			dev_err(prestera_dev(sw), "Failed to set port(%u) phy mode\n", id);
+			dev_err(prestera_dev(sw),
+				"Failed to set port(%u) phy mode\n", id);
 			goto err_port_init;
 		}
 	}

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_pci.c b/drivers/net/ethernet/marvell/prestera/prestera_pci.c
index 5d4d410b07c8..461259b3655a 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_pci.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_pci.c

@@ -411,7 +411,8 @@ static int prestera_fw_cmd_send(struct prestera_fw *fw, int qid,
 		goto cmd_exit;
 	}
 
-	memcpy_fromio(out_msg, prestera_fw_cmdq_buf(fw, qid) + in_size, ret_size);
+	memcpy_fromio(out_msg,
+		      prestera_fw_cmdq_buf(fw, qid) + in_size, ret_size);
 
 cmd_exit:
 	prestera_fw_write(fw, PRESTERA_CMDQ_REQ_CTL_REG(qid),

-- 
2.7.4

Re: [PATCH net v2] net: marvell: prestera: fix hw structure laid out

From: Denis Kirjanov <hidden>
Date: 2021-11-03 10:30:20


11/3/21 12:54 PM, Volodymyr Mytnyk пишет:

quoted hunk

From: Volodymyr Mytnyk <redacted>

- fix structure laid out discussed in:
     [PATCH net-next v4] net: marvell: prestera: add firmware v4.0 support
     https://www.spinics.net/lists/kernel/msg4127689.html

- fix review comments discussed in:
     [PATCH] [-next] net: marvell: prestera: Add explicit padding
     https://www.spinics.net/lists/kernel/msg4130293.html

- fix patchwork issues
- rebase on net master

Reported-by: kernel test robot <redacted>
Fixes: bb5dbf2cc64d ("net: marvell: prestera: add firmware v4.0 support")
Signed-off-by: Volodymyr Mytnyk <redacted>
---
  .../ethernet/marvell/prestera/prestera_ethtool.c   |   3 +-
  .../net/ethernet/marvell/prestera/prestera_hw.c    | 129 +++++++++++----------
  .../net/ethernet/marvell/prestera/prestera_main.c  |   6 +-
  .../net/ethernet/marvell/prestera/prestera_pci.c   |   3 +-
  4 files changed, 75 insertions(+), 66 deletions(-)

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c b/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c
index 6011454dba71..40d5b89573bb 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_ethtool.c

@@ -499,7 +499,8 @@ static void prestera_port_mdix_get(struct ethtool_link_ksettings *ecmd,
  {
  	struct prestera_port_phy_state *state = &port->state_phy;
  
-	if (prestera_hw_port_phy_mode_get(port, &state->mdix, NULL, NULL, NULL)) {
+	if (prestera_hw_port_phy_mode_get(port,
+					  &state->mdix, NULL, NULL, NULL)) {
  		netdev_warn(port->dev, "MDIX params get failed");
  		state->mdix = ETH_TP_MDI_INVALID;
  	}

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_hw.c b/drivers/net/ethernet/marvell/prestera/prestera_hw.c
index 4f5f52dcdd9d..fb0f17c9352f 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_hw.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.c

@@ -180,109 +180,113 @@ struct prestera_msg_common_resp {
  	struct prestera_msg_ret ret;
  };
  
-union prestera_msg_switch_param {
-	u8 mac[ETH_ALEN];
-	__le32 ageing_timeout_ms;
-} __packed;
-
  struct prestera_msg_switch_attr_req {
  	struct prestera_msg_cmd cmd;
  	__le32 attr;
-	union prestera_msg_switch_param param;
-	u8 pad[2];
+	union {
+		__le32 ageing_timeout_ms;
+		struct {
+			u8 mac[ETH_ALEN];
+			u8 __pad[2];
+		};
+	} param;
  };
  
  struct prestera_msg_switch_init_resp {
  	struct prestera_msg_ret ret;
  	__le32 port_count;
  	__le32 mtu_max;
-	u8  switch_id;
-	u8  lag_max;
-	u8  lag_member_max;
  	__le32 size_tbl_router_nexthop;
-} __packed __aligned(4);
+	u8 switch_id;
+	u8 lag_max;
+	u8 lag_member_max;
+};
  
  struct prestera_msg_event_port_param {
  	union {
  		struct {
-			u8 oper;
  			__le32 mode;
  			__le32 speed;
+			u8 oper;
  			u8 duplex;
  			u8 fc;
  			u8 fec;
-		} __packed mac;
+		} mac;
  		struct {
-			u8 mdix;
  			__le64 lmode_bmap;
+			u8 mdix;
  			u8 fc;
+			u8 __pad[2];
  		} __packed phy;
  	} __packed;
-} __packed __aligned(4);
+} __packed;
  
  struct prestera_msg_port_cap_param {
  	__le64 link_mode;
-	u8  type;
-	u8  fec;
-	u8  fc;
-	u8  transceiver;
-};
+	u8 type;
+	u8 fec;
+	u8 fc;
+	u8 transceiver;
+} __packed;
  
  struct prestera_msg_port_flood_param {
  	u8 type;
  	u8 enable;
-};
+	u8 __pad[2];
+} __packed;
  
  union prestera_msg_port_param {
+	__le32 mtu;
+	__le32 speed;
+	__le32 link_mode;
  	u8 admin_state;
  	u8 oper_state;
-	__le32 mtu;
  	u8 mac[ETH_ALEN];
  	u8 accept_frm_type;
-	__le32 speed;
  	u8 learning;
  	u8 flood;
-	__le32 link_mode;
  	u8 type;
  	u8 duplex;
  	u8 fec;
  	u8 fc;
-
  	union {
  		struct {
-			u8 admin:1;
+			u8 admin;
  			u8 fc;
  			u8 ap_enable;
+			u8 __reserved;
  			union {
  				struct {
  					__le32 mode;
-					u8  inband:1;
  					__le32 speed;
-					u8  duplex;
-					u8  fec;
-					u8  fec_supp;
-				} __packed reg_mode;
+					u8 inband;
+					u8 duplex;
+					u8 fec;
+					u8 fec_supp;
+				} reg_mode;
  				struct {
  					__le32 mode;
  					__le32 speed;
-					u8  fec;
-					u8  fec_supp;
-				} __packed ap_modes[PRESTERA_AP_PORT_MAX];
-			} __packed;
-		} __packed mac;
+					u8 fec;
+					u8 fec_supp;
+					u8 __pad[2];
+				} ap_modes[PRESTERA_AP_PORT_MAX];
+			};
+		} mac;
  		struct {
-			u8 admin:1;
-			u8 adv_enable;
  			__le64 modes;
  			__le32 mode;
+			u8 admin;
+			u8 adv_enable;
  			u8 mdix;
-		} __packed phy;
+			u8 __pad;
+		} phy;
  	} __packed link;
  
  	struct prestera_msg_port_cap_param cap;
  	struct prestera_msg_port_flood_param flood_ext;
  	struct prestera_msg_event_port_param link_evt;
-} __packed;
+};
  
  struct prestera_msg_port_attr_req {
  	struct prestera_msg_cmd cmd;

@@ -290,14 +294,12 @@ struct prestera_msg_port_attr_req {
  	__le32 port;
  	__le32 dev;
  	union prestera_msg_port_param param;
-} __packed __aligned(4);
-
+};
  
  struct prestera_msg_port_attr_resp {
  	struct prestera_msg_ret ret;
  	union prestera_msg_port_param param;
-} __packed __aligned(4);
-
+};
  
  struct prestera_msg_port_stats_resp {
  	struct prestera_msg_ret ret;

@@ -322,13 +324,13 @@ struct prestera_msg_vlan_req {
  	__le32 port;
  	__le32 dev;
  	__le16 vid;
-	u8  is_member;
-	u8  is_tagged;
+	u8 is_member;
+	u8 is_tagged;
  };
  
  struct prestera_msg_fdb_req {
  	struct prestera_msg_cmd cmd;
-	u8 dest_type;
+	__le32 flush_mode;
  	union {
  		struct {
  			__le32 port;

@@ -336,11 +338,12 @@ struct prestera_msg_fdb_req {
  		};
  		__le16 lag_id;
  	} dest;
-	u8  mac[ETH_ALEN];
  	__le16 vid;
-	u8  dynamic;
-	__le32 flush_mode;
-} __packed __aligned(4);
+	u8 dest_type;
+	u8 dynamic;
+	u8 mac[ETH_ALEN];
+	u8 __pad[2];
+};
  
  struct prestera_msg_bridge_req {
  	struct prestera_msg_cmd cmd;

@@ -383,7 +386,7 @@ struct prestera_msg_acl_match {
  		struct {
  			u8 key[ETH_ALEN];
  			u8 mask[ETH_ALEN];
-		} __packed mac;
+		} mac;
  	} keymask;
  };

@@ -446,7 +449,8 @@ struct prestera_msg_stp_req {
  	__le32 port;
  	__le32 dev;
  	__le16 vid;
-	u8  state;
+	u8 state;
+	u8 __pad;
  };
  
  struct prestera_msg_rxtx_req {

@@ -497,21 +501,21 @@ union prestera_msg_event_fdb_param {
  
  struct prestera_msg_event_fdb {
  	struct prestera_msg_event id;
-	u8 dest_type;
+	__le32 vid;
  	union {
  		__le32 port_id;
  		__le16 lag_id;
  	} dest;
-	__le32 vid;
  	union prestera_msg_event_fdb_param param;
-} __packed __aligned(4);
+	u8 dest_type;
+};
  
-static inline void prestera_hw_build_tests(void)
+static void prestera_hw_build_tests(void)
  {
  	/* check requests */
  	BUILD_BUG_ON(sizeof(struct prestera_msg_common_req) != 4);
  	BUILD_BUG_ON(sizeof(struct prestera_msg_switch_attr_req) != 16);
-	BUILD_BUG_ON(sizeof(struct prestera_msg_port_attr_req) != 120);
+	BUILD_BUG_ON(sizeof(struct prestera_msg_port_attr_req) != 140);
  	BUILD_BUG_ON(sizeof(struct prestera_msg_port_info_req) != 8);
  	BUILD_BUG_ON(sizeof(struct prestera_msg_vlan_req) != 16);
  	BUILD_BUG_ON(sizeof(struct prestera_msg_fdb_req) != 28);

@@ -528,7 +532,7 @@ static inline void prestera_hw_build_tests(void)
  	/* check responses */
  	BUILD_BUG_ON(sizeof(struct prestera_msg_common_resp) != 8);
  	BUILD_BUG_ON(sizeof(struct prestera_msg_switch_init_resp) != 24);
-	BUILD_BUG_ON(sizeof(struct prestera_msg_port_attr_resp) != 112);
+	BUILD_BUG_ON(sizeof(struct prestera_msg_port_attr_resp) != 132);
  	BUILD_BUG_ON(sizeof(struct prestera_msg_port_stats_resp) != 248);
  	BUILD_BUG_ON(sizeof(struct prestera_msg_port_info_resp) != 20);
  	BUILD_BUG_ON(sizeof(struct prestera_msg_bridge_resp) != 12);

@@ -561,9 +565,9 @@ static int __prestera_cmd_ret(struct prestera_switch *sw,
  	if (err)
  		return err;
  
-	if (__le32_to_cpu(ret->cmd.type) != PRESTERA_CMD_TYPE_ACK)
+	if (ret->cmd.type != __cpu_to_le32(PRESTERA_CMD_TYPE_ACK))
  		return -EBADE;
-	if (__le32_to_cpu(ret->status) != PRESTERA_CMD_ACK_OK)
+	if (ret->status != __cpu_to_le32(PRESTERA_CMD_ACK_OK))
  		return -EINVAL;
  
  	return 0;

@@ -1356,7 +1360,8 @@ int prestera_hw_port_speed_get(const struct prestera_port *port, u32 *speed)
  int prestera_hw_port_autoneg_restart(struct prestera_port *port)
  {
  	struct prestera_msg_port_attr_req req = {
-		.attr = __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_PHY_AUTONEG_RESTART),
+		.attr =
+		    __cpu_to_le32(PRESTERA_CMD_PORT_ATTR_PHY_AUTONEG_RESTART),

All the newline changes are unrelated to the structure layout chnages.
Send them as a separate patch.

quoted hunk

  		.port = __cpu_to_le32(port->hw_id),
  		.dev = __cpu_to_le32(port->dev_id),
  	};

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_main.c b/drivers/net/ethernet/marvell/prestera/prestera_main.c
index 625b40149fac..4369a3ffad45 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_main.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c

@@ -405,7 +405,8 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id)
  
  	err = prestera_port_cfg_mac_write(port, &cfg_mac);
  	if (err) {
-		dev_err(prestera_dev(sw), "Failed to set port(%u) mac mode\n", id);
+		dev_err(prestera_dev(sw),
+			"Failed to set port(%u) mac mode\n", id);
  		goto err_port_init;
  	}

@@ -418,7 +419,8 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id)
  						    false, 0, 0,
  						    port->cfg_phy.mdix);
  		if (err) {
-			dev_err(prestera_dev(sw), "Failed to set port(%u) phy mode\n", id);
+			dev_err(prestera_dev(sw),
+				"Failed to set port(%u) phy mode\n", id);
  			goto err_port_init;
  		}
  	}

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_pci.c b/drivers/net/ethernet/marvell/prestera/prestera_pci.c
index 5d4d410b07c8..461259b3655a 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_pci.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_pci.c

@@ -411,7 +411,8 @@ static int prestera_fw_cmd_send(struct prestera_fw *fw, int qid,
  		goto cmd_exit;
  	}
  
-	memcpy_fromio(out_msg, prestera_fw_cmdq_buf(fw, qid) + in_size, ret_size);
+	memcpy_fromio(out_msg,
+		      prestera_fw_cmdq_buf(fw, qid) + in_size, ret_size);
  
  cmd_exit:
  	prestera_fw_write(fw, PRESTERA_CMDQ_REQ_CTL_REG(qid),

Re: [PATCH net v2] net: marvell: prestera: fix hw structure laid out

From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: 2021-11-04 09:12:43

Hi Volodymyr,

On Wed, Nov 3, 2021 at 10:56 AM Volodymyr Mytnyk
[off-list ref] wrote:

From: Volodymyr Mytnyk <redacted>

- fix structure laid out discussed in:
    [PATCH net-next v4] net: marvell: prestera: add firmware v4.0 support
    https://www.spinics.net/lists/kernel/msg4127689.html

- fix review comments discussed in:
    [PATCH] [-next] net: marvell: prestera: Add explicit padding
    https://www.spinics.net/lists/kernel/msg4130293.html

- fix patchwork issues
- rebase on net master

Reported-by: kernel test robot <redacted>
Fixes: bb5dbf2cc64d ("net: marvell: prestera: add firmware v4.0 support")
Signed-off-by: Volodymyr Mytnyk <redacted>

Thanks for your patch!

quoted hunk

--- a/drivers/net/ethernet/marvell/prestera/prestera_hw.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.c

 struct prestera_msg_port_flood_param {
        u8 type;
        u8 enable;
-};
+       u8 __pad[2];
+} __packed;

What's the point of having __packed on a struct of bytes?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH net v2] net: marvell: prestera: fix hw structure laid out

From: Volodymyr Mytnyk [C] <hidden>
Date: 2021-11-04 09:46:07

On Wed, Nov 3, 2021 at 10:56 AM Volodymyr Mytnyk
[off-list ref] wrote:

quoted

From: Volodymyr Mytnyk <redacted>

- fix structure laid out discussed in:
    [PATCH net-next v4] net: marvell: prestera: add firmware v4.0 support
    https://urldefense.proofpoint.com/v2/url?u=https-3A__www.spinics.net_lists_kernel_msg4127689.html&d=DwIBaQ&c=nKjWec2b6R0mOyPaz7xtfQ&r=Y41pILcavAE6E85lMlyXdQBpY03LUi5-euLmDcLBBRw&m=MggFlhvEsV0dikgTUWWhK5i05HFJvv2BF0EdMIAghqSI92og-BAfZXe2Wm82FjG7&s=KkA8BuuYlG-6UWpaKKvGkvVRbhyoKnSNnftLBCYELDE&e= 

- fix review comments discussed in:
    [PATCH] [-next] net: marvell: prestera: Add explicit padding
    https://urldefense.proofpoint.com/v2/url?u=https-3A__www.spinics.net_lists_kernel_msg4130293.html&d=DwIBaQ&c=nKjWec2b6R0mOyPaz7xtfQ&r=Y41pILcavAE6E85lMlyXdQBpY03LUi5-euLmDcLBBRw&m=MggFlhvEsV0dikgTUWWhK5i05HFJvv2BF0EdMIAghqSI92og-BAfZXe2Wm82FjG7&s=Hs1u5qLhVlePG9KiNdOJiDpLTF200_9hn0gL9WLRJUA&e= 

- fix patchwork issues
- rebase on net master

Reported-by: kernel test robot <redacted>
Fixes: bb5dbf2cc64d ("net: marvell: prestera: add firmware v4.0 support")
Signed-off-by: Volodymyr Mytnyk <redacted>

Thanks for your patch!

quoted

--- a/drivers/net/ethernet/marvell/prestera/prestera_hw.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.c

quoted

 struct prestera_msg_port_flood_param {
        u8 type;
        u8 enable;
-};
+       u8 __pad[2];
+} __packed;

What's the point of having __packed on a struct of bytes?

This one can be removed probaby. Thanks. Will fix it in follow up patch set.

Gr{oetje,eeting}s,

                        Geert

              Volodymyr

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