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drivers: eth_smsc91x: Implement promiscuous mode

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Add the RCR_PRMS field to toggle the promiscuous mode in the Ethernet
controller.

Register a set_config function that can make use of the field when
CONFIG_NET_PROMISCUOUS_MODE is enabled.

Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
This commit is contained in:
Ambroise Vincent 2023-06-19 08:59:37 +01:00 • committed by Carles Cufí
commit b6af1ac66e
2 changed files with 46 additions and 3 deletions
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44
drivers/ethernet/eth_smsc91x.c
View file

@ -678,7 +678,12 @@ static enum ethernet_hw_caps eth_smsc_get_caps(const struct device *dev)
{
ARG_UNUSED(dev);
return ETHERNET_LINK_10BASE_T | ETHERNET_LINK_100BASE_T;
return (ETHERNET_LINK_10BASE_T
| ETHERNET_LINK_100BASE_T
#if defined(CONFIG_NET_PROMISCUOUS_MODE)
| ETHERNET_PROMISC_MODE
#endif
);
}
static int eth_tx(const struct device *dev, struct net_pkt *pkt)
@ -696,6 +701,42 @@ static int eth_tx(const struct device *dev, struct net_pkt *pkt)
return smsc_send_pkt(sc, tx_buffer, len);
}
static int eth_smsc_set_config(const struct device *dev,
enum ethernet_config_type type,
const struct ethernet_config *config)
{
struct eth_context *data = dev->data;
struct smsc_data *sc = &data->sc;
uint8_t reg_val;
int ret = 0;
(void) reg_val;
switch (type) {
#if defined(CONFIG_NET_PROMISCUOUS_MODE)
case ETHERNET_CONFIG_TYPE_PROMISC_MODE:
SMSC_LOCK(sc);
smsc_select_bank(sc, 0);
reg_val = smsc_read_1(sc, RCR);
if (config->promisc_mode && !(reg_val & RCR_PRMS)) {
smsc_write_1(sc, RCR, reg_val | RCR_PRMS);
} else if (!config->promisc_mode && (reg_val & RCR_PRMS)) {
smsc_write_1(sc, RCR, reg_val & ~RCR_PRMS);
} else {
ret = -EALREADY;
}
SMSC_UNLOCK(sc);
break;
#endif
default:
ret = -ENOTSUP;
break;
}
return ret;
}
static void eth_initialize(struct net_if *iface)
{
const struct device *dev = net_if_get_device(iface);
@ -727,6 +768,7 @@ static void eth_initialize(struct net_if *iface)
static const struct ethernet_api api_funcs = {
.iface_api.init = eth_initialize,
.get_capabilities = eth_smsc_get_caps,
.set_config = eth_smsc_set_config,
.send = eth_tx,
};

1
drivers/ethernet/eth_smsc91x_priv.h
View file

@ -25,6 +25,7 @@
/* Bank 0, Offset 0x4: Receive Control Register */
#define RCR 0x4
#define RCR_PRMS 0x0002 /* Promiscuous mode */
#define RCR_RXEN 0x0100 /* Enable/disable receiver */
#define RCR_STRIP_CRC 0x0200 /* Strip CRC from RX packets */
#define RCR_SOFT_RST 0x8000 /* Software reset */