Re: [PATCHv3] net: uclass: Save generated ethernet MAC addresses to the environment

On Mon, Nov 22, 2021 at 3:45 PM Tom Rini trini@konsulko.com wrote:

From: Michal Simek michal.simek@xilinx.com

When a MAC address is randomly generated we currently only update the appropriate data structure. For consistency and to re-align with historic usage, it should be also saved to the appropriate environment variable as well.

Cc: Wolfgang Denk wd@denx.de Signed-off-by: Michal Simek michal.simek@xilinx.com Reviewed-by: Ramon Fried rfried.dev@gmail.com [trini: Update Kconfig, handle legacy networking case as well] Signed-off-by: Tom Rini trini@konsulko.com

---

Changes in v3:

• Update Kconfig help text with Wolfgang's suggestion
• Reword the commit message to hopefully be clearer

Changes in v2:

• Update Kconfig help text to reflect this change.
• Update the legacy path to match.

---

net/Kconfig | 9 +++++---- net/eth-uclass.c | 2 ++ net/eth_legacy.c | 2 ++ 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/net/Kconfig b/net/Kconfig index 7a2d14501881..cabe93c6bd29 100644 --- a/net/Kconfig +++ b/net/Kconfig @@ -27,10 +27,11 @@ config BOOTP_SEND_HOSTNAME config NET_RANDOM_ETHADDR bool "Random ethaddr if unset" help

•     Selecting this will allow the Ethernet interface to function
  

•     even when the ethaddr variable for that interface is unset.
  

•     A new MAC address will be generated on every boot and it will
  

•     not be added to the environment.
  

•     Selecting this will allow the Ethernet interface to function even
  

•     when the ethaddr variable for that interface is unset.  In this case,
  

•     a random MAC address in the locally administered address space is
  

•     generated. It will be saved to the appropriate environment variable,
  

•     too.
  
  

config NETCONSOLE bool "NetConsole support" diff --git a/net/eth-uclass.c b/net/eth-uclass.c index 0da0e85be031..58c308f33276 100644 --- a/net/eth-uclass.c +++ b/net/eth-uclass.c @@ -583,6 +583,8 @@ static int eth_post_probe(struct udevice *dev) net_random_ethaddr(pdata->enetaddr); printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", dev->name, dev_seq(dev), pdata->enetaddr);

•           eth_env_set_enetaddr_by_index("eth", dev_seq(dev),
  

•                                         pdata->enetaddr);
  

#else printf("\nError: %s address not set.\n", dev->name); diff --git a/net/eth_legacy.c b/net/eth_legacy.c index f383ccce0b92..e7f53b958b2e 100644 --- a/net/eth_legacy.c +++ b/net/eth_legacy.c @@ -164,6 +164,8 @@ int eth_write_hwaddr(struct eth_device *dev, const char *base_name, net_random_ethaddr(dev->enetaddr); printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", dev->name, eth_number, dev->enetaddr);

•           eth_env_set_enetaddr_by_index("eth", dev_seq(dev),
  

•                                         pdata->enetaddr);
  

#else printf("\nError: %s address not set.\n", dev->name); -- 2.25.1

Acked-by: Ramon Fried rfried.dev@gmail.com