@@ -2,6 +2,10 @@
/* Copyright (C) 2024 Linaro Ltd. */
#include <command.h>
+#include <dm/device.h>
+#include <dm/uclass.h>
+#include <linux/compat.h>
+#include <linux/ethtool.h>
#include <net-lwip.h>
#if defined(CONFIG_CMD_DHCP_LWIP)
@@ -43,3 +47,97 @@ U_BOOT_CMD(
"[loadAddress] URL"
);
#endif
+
+static int do_net_list(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+ const struct udevice *current = eth_get_dev();
+ unsigned char env_enetaddr[ARP_HLEN];
+ const struct udevice *dev;
+ struct uclass *uc;
+
+ uclass_id_foreach_dev(UCLASS_ETH, dev, uc) {
+ eth_env_get_enetaddr_by_index("eth", dev_seq(dev), env_enetaddr);
+ printf("eth%d : %s %pM %s\n", dev_seq(dev), dev->name, env_enetaddr,
+ current == dev ? "active" : "");
+ }
+ return CMD_RET_SUCCESS;
+}
+
+static int do_net_stats(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+ int nstats, err, i, off;
+ struct udevice *dev;
+ u64 *values;
+ u8 *strings;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ err = uclass_get_device_by_name(UCLASS_ETH, argv[1], &dev);
+ if (err) {
+ printf("Could not find device %s\n", argv[1]);
+ return CMD_RET_FAILURE;
+ }
+
+ if (!eth_get_ops(dev)->get_sset_count ||
+ !eth_get_ops(dev)->get_strings ||
+ !eth_get_ops(dev)->get_stats) {
+ printf("Driver does not implement stats dump!\n");
+ return CMD_RET_FAILURE;
+ }
+
+ nstats = eth_get_ops(dev)->get_sset_count(dev);
+ strings = kcalloc(nstats, ETH_GSTRING_LEN, GFP_KERNEL);
+ if (!strings)
+ return CMD_RET_FAILURE;
+
+ values = kcalloc(nstats, sizeof(u64), GFP_KERNEL);
+ if (!values)
+ goto err_free_strings;
+
+ eth_get_ops(dev)->get_strings(dev, strings);
+ eth_get_ops(dev)->get_stats(dev, values);
+
+ off = 0;
+ for (i = 0; i < nstats; i++) {
+ printf(" %s: %llu\n", &strings[off], values[i]);
+ off += ETH_GSTRING_LEN;
+ };
+
+ return CMD_RET_SUCCESS;
+
+err_free_strings:
+ kfree(strings);
+
+ return CMD_RET_FAILURE;
+}
+
+static struct cmd_tbl cmd_net[] = {
+ U_BOOT_CMD_MKENT(list, 1, 0, do_net_list, "", ""),
+ U_BOOT_CMD_MKENT(stats, 2, 0, do_net_stats, "", ""),
+};
+
+static int do_net(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+ struct cmd_tbl *cp;
+
+ cp = find_cmd_tbl(argv[1], cmd_net, ARRAY_SIZE(cmd_net));
+
+ /* Drop the net command */
+ argc--;
+ argv++;
+
+ if (!cp || argc > cp->maxargs)
+ return CMD_RET_USAGE;
+ if (flag == CMD_FLAG_REPEAT && !cmd_is_repeatable(cp))
+ return CMD_RET_SUCCESS;
+
+ return cp->cmd(cmdtp, flag, argc, argv);
+}
+
+U_BOOT_CMD(
+ net, 3, 1, do_net,
+ "NET sub-system",
+ "list - list available devices\n"
+ "stats <device> - dump statistics for specified device\n"
+);
@@ -51,6 +51,56 @@ int eth_env_get_enetaddr_by_index(const char *base_name, int index,
int eth_init(void); /* Initialize the device */
int eth_send(void *packet, int length); /* Send a packet */
int eth_rx(void);
+
+/**
+ * struct eth_ops - functions of Ethernet MAC controllers
+ *
+ * start: Prepare the hardware to send and receive packets
+ * send: Send the bytes passed in "packet" as a packet on the wire
+ * recv: Check if the hardware received a packet. If so, set the pointer to the
+ * packet buffer in the packetp parameter. If not, return an error or 0 to
+ * indicate that the hardware receive FIFO is empty. If 0 is returned, the
+ * network stack will not process the empty packet, but free_pkt() will be
+ * called if supplied
+ * free_pkt: Give the driver an opportunity to manage its packet buffer memory
+ * when the network stack is finished processing it. This will only be
+ * called when no error was returned from recv - optional
+ * stop: Stop the hardware from looking for packets - may be called even if
+ * state == PASSIVE
+ * mcast: Join or leave a multicast group (for TFTP) - optional
+ * write_hwaddr: Write a MAC address to the hardware (used to pass it to Linux
+ * on some platforms like ARM). This function expects the
+ * eth_pdata::enetaddr field to be populated. The method can
+ * return -ENOSYS to indicate that this is not implemented for
+ this hardware - optional.
+ * read_rom_hwaddr: Some devices have a backup of the MAC address stored in a
+ * ROM on the board. This is how the driver should expose it
+ * to the network stack. This function should fill in the
+ * eth_pdata::enetaddr field - optional
+ * set_promisc: Enable or Disable promiscuous mode
+ * get_sset_count: Number of statistics counters
+ * get_string: Names of the statistic counters
+ * get_stats: The values of the statistic counters
+ */
+struct eth_ops {
+ int (*start)(struct udevice *dev);
+ int (*send)(struct udevice *dev, void *packet, int length);
+ int (*recv)(struct udevice *dev, int flags, uchar **packetp);
+ int (*free_pkt)(struct udevice *dev, uchar *packet, int length);
+ void (*stop)(struct udevice *dev);
+ int (*mcast)(struct udevice *dev, const u8 *enetaddr, int join);
+ int (*write_hwaddr)(struct udevice *dev);
+ int (*read_rom_hwaddr)(struct udevice *dev);
+ int (*set_promisc)(struct udevice *dev, bool enable);
+ int (*get_sset_count)(struct udevice *dev);
+ void (*get_strings)(struct udevice *dev, u8 *data);
+ void (*get_stats)(struct udevice *dev, u64 *data);
+};
+
+#define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops)
+
+struct udevice *eth_get_dev(void); /* get the current device */
+int eth_get_dev_index(void);
const char *eth_get_name(void);
int eth_get_dev_index(void);
int eth_init_state_only(void); /* Set active state */
Add support for "net list" and "net stats" to net-lwip/ by copying the code from cmd/net.c. Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org> --- cmd/net-lwip.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++ include/net-lwip.h | 50 +++++++++++++++++++++++ 2 files changed, 148 insertions(+)