[U-Boot] [RFC PATCH v4 19/23] sandbox: eth: Add ability to disable ping reply in sandbox eth driver

[Joe Hershberger]

This is needed to test the netretry functionality (make the command fail
on a sandbox eth device).

Signed-off-by: Joe Hershberger <joe.hershberger at ni.com>

---

Changes in v4:
-Add ability to disable ping reply in sandbox eth driver

Changes in v3: None
Changes in v2: None

 drivers/net/sandbox.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/sandbox.c b/drivers/net/sandbox.c
index 81362e6..28fe09a 100644
--- a/drivers/net/sandbox.c
+++ b/drivers/net/sandbox.c
@@ -49,9 +49,14 @@ static int sb_eth_send(struct udevice *dev, void *packet, int length)
 {
 	struct eth_sandbox_priv *priv = dev_get_priv(dev);
 	struct ethernet_hdr *eth = packet;
+	char varname[32];
 
 	debug("eth_sandbox: Send packet %d\n", length);
 
+	sprintf(varname, "eth_sandbox_disable_%d", dev->seq);
+	if (getenv_yesno(varname) > 0)
+		return 0;
+
 	if (ntohs(eth->et_protlen) == PROT_ARP) {
 		struct arp_hdr *arp = packet + ETHER_HDR_SIZE;
 
-- 
1.7.11.5