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Use MAC list instead of base MAC for more flexibility

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This commit is contained in:
Alex Forencich 2021-01-31 22:25:24 -08:00
parent 85d9ec7a87
commit df32217dc8
4 changed files with 32 additions and 19 deletions
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3
modules/mqnic/mqnic.h
View File

@ -76,7 +76,8 @@ struct mqnic_dev {
struct mutex state_lock;
u8 base_mac[ETH_ALEN];
int mac_count;
u8 mac_list[MQNIC_MAX_IF][ETH_ALEN];
char name[16];

21
modules/mqnic/mqnic_i2c.c
View File

@ -441,6 +441,27 @@ int mqnic_init_i2c(struct mqnic_dev *mqnic)
break;
}
// Read MAC from EEPROM
if (mqnic->eeprom_i2c_client)
{
int r, k;
r = i2c_smbus_read_i2c_block_data(mqnic->eeprom_i2c_client, 0x00, 6, mqnic->mac_list[0]);
if (r < 0)
{
dev_warn(mqnic->dev, "Failed to read MAC from EEPROM");
}
else
{
mqnic->mac_count = MQNIC_MAX_IF;
for (k = 1; k < mqnic->mac_count; k++)
{
memcpy(mqnic->mac_list[k], mqnic->mac_list[0], ETH_ALEN);
mqnic->mac_list[k][ETH_ALEN-1] += k;
}
}
}
return ret;
}

14
modules/mqnic/mqnic_main.c
View File

@ -258,20 +258,6 @@ static int mqnic_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent
goto fail_i2c;
}
// Read MAC from EEPROM
if (mqnic->eeprom_i2c_client)
{
ret = i2c_smbus_read_i2c_block_data(mqnic->eeprom_i2c_client, 0x00, 6, mqnic->base_mac);
if (ret < 0)
{
dev_warn(dev, "Failed to read MAC from EEPROM");
}
}
else
{
dev_warn(dev, "Failed to read MAC from EEPROM; no EEPROM I2C client registered");
}
// Enable bus mastering for DMA
pci_set_master(pdev);

13
modules/mqnic/mqnic_netdev.c
View File

@ -486,16 +486,21 @@ int mqnic_init_netdev(struct mqnic_dev *mdev, int port, u8 __iomem *hw_addr)
// set MAC
ndev->addr_len = ETH_ALEN;
memcpy(ndev->dev_addr, mdev->base_mac, ETH_ALEN);
if (!is_valid_ether_addr(ndev->dev_addr))
if (port >= mdev->mac_count)
{
dev_warn(dev, "Bad MAC in EEPROM; using random MAC");
dev_warn(dev, "Exhausted permanent MAC addresses; using random MAC");
eth_hw_addr_random(ndev);
}
else
{
ndev->dev_addr[ETH_ALEN-1] += port;
memcpy(ndev->dev_addr, mdev->mac_list[port], ETH_ALEN);
if (!is_valid_ether_addr(ndev->dev_addr))
{
dev_warn(dev, "Invalid MAC address in list; using random MAC");
eth_hw_addr_random(ndev);
}
}
priv->hwts_config.flags = 0;