From 08f87f769b595151be1afeff53e144f543faa614 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 06 Dec 2023 09:51:13 +0000
Subject: [PATCH] add dts config
---
kernel/drivers/usb/gadget/function/u_ether.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 46 insertions(+), 8 deletions(-)
diff --git a/kernel/drivers/usb/gadget/function/u_ether.c b/kernel/drivers/usb/gadget/function/u_ether.c
index 1b3e674..785e03f 100644
--- a/kernel/drivers/usb/gadget/function/u_ether.c
+++ b/kernel/drivers/usb/gadget/function/u_ether.c
@@ -80,6 +80,7 @@
bool zlp;
bool no_skb_reserve;
+ bool ifname_set;
u8 host_mac[ETH_ALEN];
u8 dev_mac[ETH_ALEN];
};
@@ -322,7 +323,7 @@
/* data overrun */
case -EOVERFLOW:
dev->net->stats.rx_over_errors++;
- /* FALLTHROUGH */
+ fallthrough;
default:
dev->net->stats.rx_errors++;
@@ -445,7 +446,7 @@
default:
dev->net->stats.tx_errors++;
VDBG(dev, "tx err %d\n", req->status);
- /* FALLTHROUGH */
+ fallthrough;
case -ECONNRESET: /* unlink */
case -ESHUTDOWN: /* disconnect etc */
dev_kfree_skb_any(skb);
@@ -732,7 +733,7 @@
.name = "gadget",
};
-/**
+/*
* gether_setup_name - initialize one ethernet-over-usb link
* @g: gadget to associated with these links
* @ethaddr: NULL, or a buffer in which the ethernet address of the
@@ -772,9 +773,13 @@
dev->qmult = qmult;
snprintf(net->name, sizeof(net->name), "%s%%d", netname);
- if (get_ether_addr(dev_addr, net->dev_addr))
+ if (get_ether_addr(dev_addr, net->dev_addr)) {
+ net->addr_assign_type = NET_ADDR_RANDOM;
dev_warn(&g->dev,
"using random %s ethernet address\n", "self");
+ } else {
+ net->addr_assign_type = NET_ADDR_SET;
+ }
if (get_ether_addr(host_addr, dev->host_mac))
dev_warn(&g->dev,
"using random %s ethernet address\n", "host");
@@ -831,6 +836,9 @@
INIT_LIST_HEAD(&dev->tx_reqs);
INIT_LIST_HEAD(&dev->rx_reqs);
+ /* by default we always have a random MAC address */
+ net->addr_assign_type = NET_ADDR_RANDOM;
+
skb_queue_head_init(&dev->rx_frames);
/* network device setup */
@@ -868,7 +876,6 @@
g = dev->gadget;
memcpy(net->dev_addr, dev->dev_mac, ETH_ALEN);
- net->addr_assign_type = NET_ADDR_RANDOM;
status = register_netdev(net);
if (status < 0) {
@@ -908,6 +915,7 @@
if (get_ether_addr(dev_addr, new_addr))
return -EINVAL;
memcpy(dev->dev_mac, new_addr, ETH_ALEN);
+ net->addr_assign_type = NET_ADDR_SET;
return 0;
}
EXPORT_SYMBOL_GPL(gether_set_dev_addr);
@@ -1000,16 +1008,46 @@
int gether_get_ifname(struct net_device *net, char *name, int len)
{
+ struct eth_dev *dev = netdev_priv(net);
int ret;
rtnl_lock();
- ret = snprintf(name, len, "%s\n", netdev_name(net));
+ ret = scnprintf(name, len, "%s\n",
+ dev->ifname_set ? net->name : netdev_name(net));
rtnl_unlock();
- return ret < len ? ret : len;
+ return ret;
}
EXPORT_SYMBOL_GPL(gether_get_ifname);
-/**
+int gether_set_ifname(struct net_device *net, const char *name, int len)
+{
+ struct eth_dev *dev = netdev_priv(net);
+ char tmp[IFNAMSIZ];
+ const char *p;
+
+ if (name[len - 1] == '\n')
+ len--;
+
+ if (len >= sizeof(tmp))
+ return -E2BIG;
+
+ strscpy(tmp, name, len + 1);
+ if (!dev_valid_name(tmp))
+ return -EINVAL;
+
+ /* Require exactly one %d, so binding will not fail with EEXIST. */
+ p = strchr(name, '%');
+ if (!p || p[1] != 'd' || strchr(p + 2, '%'))
+ return -EINVAL;
+
+ strncpy(net->name, tmp, sizeof(net->name));
+ dev->ifname_set = true;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(gether_set_ifname);
+
+/*
* gether_cleanup - remove Ethernet-over-USB device
* Context: may sleep
*
--
Gitblit v1.6.2