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r8169: make rtl_fw_format_ok and rtl_fw_data_ok more independent

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In preparation of factoring out the firmware handling code avoid any
usage of struct rtl8169_private internals. As part of it we can inline
rtl_check_firmware.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2019-06-03 21:25:43 +02:00 committed by David S. Miller
parent 2956870e0a
commit 4edb00f391
1 changed files with 20 additions and 40 deletions
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60
drivers/net/ethernet/realtek/r8169.c
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@ -677,6 +677,8 @@ struct rtl8169_private {
rtl_fw_write_t mac_mcu_write;
rtl_fw_read_t mac_mcu_read;
const struct firmware *fw;
const char *fw_name;
struct device *dev;
#define RTL_VER_SIZE 32
@ -2324,7 +2326,7 @@ struct fw_info {
#define FW_OPCODE_SIZE sizeof(typeof(*((struct rtl_fw_phy_action *)0)->code))
static bool rtl_fw_format_ok(struct rtl8169_private *tp, struct rtl_fw *rtl_fw)
static bool rtl_fw_format_ok(struct rtl_fw *rtl_fw)
{
const struct firmware *fw = rtl_fw->fw;
struct fw_info *fw_info = (struct fw_info *)fw->data;
@ -2361,7 +2363,7 @@ static bool rtl_fw_format_ok(struct rtl8169_private *tp, struct rtl_fw *rtl_fw)
if (fw->size % FW_OPCODE_SIZE)
return false;
strscpy(rtl_fw->version, tp->fw_name, RTL_VER_SIZE);
strscpy(rtl_fw->version, rtl_fw->fw_name, RTL_VER_SIZE);
pa->code = (__le32 *)fw->data;
pa->size = fw->size / FW_OPCODE_SIZE;
@ -2370,10 +2372,9 @@ static bool rtl_fw_format_ok(struct rtl8169_private *tp, struct rtl_fw *rtl_fw)
return true;
}
static bool rtl_fw_data_ok(struct rtl8169_private *tp, struct net_device *dev,
struct rtl_fw_phy_action *pa)
static bool rtl_fw_data_ok(struct rtl_fw *rtl_fw)
{
bool rc = false;
struct rtl_fw_phy_action *pa = &rtl_fw->phy_action;
size_t index;
for (index = 0; index < pa->size; index++) {
@ -2392,54 +2393,30 @@ static bool rtl_fw_data_ok(struct rtl8169_private *tp, struct net_device *dev,
break;
case PHY_BJMPN:
if (regno > index) {
netif_err(tp, ifup, tp->dev,
"Out of range of firmware\n");
if (regno > index)
goto out;
}
break;
case PHY_READCOUNT_EQ_SKIP:
if (index + 2 >= pa->size) {
netif_err(tp, ifup, tp->dev,
"Out of range of firmware\n");
if (index + 2 >= pa->size)
goto out;
}
break;
case PHY_COMP_EQ_SKIPN:
case PHY_COMP_NEQ_SKIPN:
case PHY_SKIPN:
if (index + 1 + regno >= pa->size) {
netif_err(tp, ifup, tp->dev,
"Out of range of firmware\n");
if (index + 1 + regno >= pa->size)
goto out;
}
break;
default:
netif_err(tp, ifup, tp->dev,
"Invalid action 0x%08x\n", action);
goto out;
dev_err(rtl_fw->dev, "Invalid action 0x%08x\n", action);
return false;
}
}
rc = true;
return true;
out:
return rc;
}
static int rtl_check_firmware(struct rtl8169_private *tp, struct rtl_fw *rtl_fw)
{
struct net_device *dev = tp->dev;
int rc = -EINVAL;
if (!rtl_fw_format_ok(tp, rtl_fw)) {
netif_err(tp, ifup, dev, "invalid firmware\n");
goto out;
}
if (rtl_fw_data_ok(tp, dev, &rtl_fw->phy_action))
rc = 0;
out:
return rc;
dev_err(rtl_fw->dev, "Out of range of firmware\n");
return false;
}
static void rtl_fw_write_firmware(struct rtl8169_private *tp,
@ -4289,14 +4266,17 @@ static void rtl_request_firmware(struct rtl8169_private *tp)
rtl_fw->phy_read = rtl_readphy;
rtl_fw->mac_mcu_write = mac_mcu_write;
rtl_fw->mac_mcu_read = mac_mcu_read;
rtl_fw->fw_name = tp->fw_name;
rtl_fw->dev = tp_to_dev(tp);
rc = request_firmware(&rtl_fw->fw, tp->fw_name, tp_to_dev(tp));
if (rc < 0)
goto err_free;
rc = rtl_check_firmware(tp, rtl_fw);
if (rc < 0)
if (!rtl_fw_format_ok(rtl_fw) || !rtl_fw_data_ok(rtl_fw)) {
dev_err(rtl_fw->dev, "invalid firmware\n");
goto err_release_firmware;
}
tp->rtl_fw = rtl_fw;