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net: sandbox: Make the fake eth driver response configurable 

Make the send handler registerable so tests can check for different
things.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Joe Hershberger 2018-09-26 16:48:55 -05:00
parent e95bb16110
commit c7eb733d60
2 changed files with 68 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
arch/sandbox/include/asm/eth.h
View File

@ -39,4 +39,21 @@ int sandbox_eth_arp_req_to_reply(struct udevice *dev, void *packet,
int sandbox_eth_ping_req_to_reply(struct udevice *dev, void *packet,
unsigned int len);
/**
* A packet handler
*
* dev - device pointer
* pkt - pointer to the "sent" packet
* len - packet length
*/
typedef int sandbox_eth_tx_hand_f(struct udevice *dev, void *pkt,
unsigned int len);
/*
* Set packet handler
*
* handler - The func ptr to call on send. If NULL, set to default handler
*/
void sandbox_eth_set_tx_handler(int index, sandbox_eth_tx_hand_f *handler);
#endif /* __ETH_H */

55
drivers/net/sandbox.c
View File

@ -10,6 +10,7 @@
#include <dm.h>
#include <malloc.h>
#include <net.h>
#include <asm/eth.h>
#include <asm/test.h>
DECLARE_GLOBAL_DATA_PTR;
@ -22,6 +23,7 @@ DECLARE_GLOBAL_DATA_PTR;
* disabled: Will not respond
* recv_packet_buffer: buffer of the packet returned as received
* recv_packet_length: length of the packet returned as received
* tx_handler - function to generate responses to sent packets
*/
struct eth_sandbox_priv {
uchar fake_host_hwaddr[ARP_HLEN];
@ -29,6 +31,7 @@ struct eth_sandbox_priv {
bool disabled;
uchar *recv_packet_buffer;
int recv_packet_length;
sandbox_eth_tx_hand_f *tx_handler;
};
static bool skip_timeout;
@ -165,6 +168,52 @@ int sandbox_eth_ping_req_to_reply(struct udevice *dev, void *packet,
return 0;
}
/*
* sb_default_handler()
*
* perform typical responses to simple ping
*
* dev - device pointer
* pkt - "sent" packet buffer
* len - length of packet
*/
static int sb_default_handler(struct udevice *dev, void *packet,
unsigned int len)
{
if (!sandbox_eth_arp_req_to_reply(dev, packet, len))
return 0;
if (!sandbox_eth_ping_req_to_reply(dev, packet, len))
return 0;
return 0;
}
/*
* sandbox_eth_set_tx_handler()
*
* Set a custom response to a packet being sent through the sandbox eth test
* driver
*
* index - interface to set the handler for
* handler - The func ptr to call on send. If NULL, set to default handler
*/
void sandbox_eth_set_tx_handler(int index, sandbox_eth_tx_hand_f *handler)
{
struct udevice *dev;
struct eth_sandbox_priv *priv;
int ret;
ret = uclass_get_device(UCLASS_ETH, index, &dev);
if (ret)
return;
priv = dev_get_priv(dev);
if (handler)
priv->tx_handler = handler;
else
priv->tx_handler = sb_default_handler;
}
static int sb_eth_start(struct udevice *dev)
{
struct eth_sandbox_priv *priv = dev_get_priv(dev);
@ -185,10 +234,7 @@ static int sb_eth_send(struct udevice *dev, void *packet, int length)
if (priv->disabled)
return 0;
if (!sandbox_eth_arp_req_to_reply(dev, packet, length))
return 0;
if (!sandbox_eth_ping_req_to_reply(dev, packet, length))
return 0;
return priv->tx_handler(dev, packet, length);
}
static int sb_eth_recv(struct udevice *dev, int flags, uchar **packetp)
@ -254,6 +300,7 @@ static int sb_eth_ofdata_to_platdata(struct udevice *dev)
}
memcpy(priv->fake_host_hwaddr, mac, ARP_HLEN);
priv->disabled = false;
priv->tx_handler = sb_default_handler;
return 0;
}