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authorMichael Walle <michael@walle.cc>2011-10-27 11:31:35 +0000
committerWolfgang Denk <wd@denx.de>2011-12-20 22:57:25 +0100
commitfea7dcae506bfbc3f67f8ed6a415d4f45914ee9b (patch)
tree21e78f3fef4225d0d6bd916221cc4cc41c59e38d /net
parent19a5944fcd623f1793ce57569171f617200e4b15 (diff)
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net: introduce per device index
Instead of counting the device index everytime a functions needs it, store it in the eth_device struct. eth_register() keeps track of the indices and updates the device's index number. This simplifies some functions in net/eth.c. Additionally, a network driver can now query its index, eg. to get the correct environment ethaddr name. Signed-off-by: Michael Walle <michael@walle.cc> Cc: Prafulla Wadaskar <prafulla@marvell.com> Cc: Mike Frysinger <vapier@gentoo.com> Cc: Wolfgang Denk <wd@denx.de> Acked-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'net')
-rw-r--r--net/eth.c41
1 files changed, 12 insertions, 29 deletions
diff --git a/net/eth.c b/net/eth.c
index 4280d6d..b4b9b43 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -127,7 +127,6 @@ struct eth_device *eth_get_dev_by_name(const char *devname)
struct eth_device *eth_get_dev_by_index(int index)
{
struct eth_device *dev, *target_dev;
- int idx = 0;
if (!eth_devices)
return NULL;
@@ -135,12 +134,11 @@ struct eth_device *eth_get_dev_by_index(int index)
dev = eth_devices;
target_dev = NULL;
do {
- if (idx == index) {
+ if (dev->index == index) {
target_dev = dev;
break;
}
dev = dev->next;
- idx++;
} while (dev != eth_devices);
return target_dev;
@@ -148,24 +146,11 @@ struct eth_device *eth_get_dev_by_index(int index)
int eth_get_dev_index (void)
{
- struct eth_device *dev;
- int num = 0;
-
- if (!eth_devices) {
- return (-1);
- }
-
- for (dev = eth_devices; dev; dev = dev->next) {
- if (dev == eth_current)
- break;
- ++num;
- }
-
- if (dev) {
- return (num);
+ if (!eth_current) {
+ return -1;
}
- return (0);
+ return eth_current->index;
}
static void eth_current_changed(void)
@@ -219,6 +204,7 @@ int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
int eth_register(struct eth_device *dev)
{
struct eth_device *d;
+ static int index = 0;
assert(strlen(dev->name) < NAMESIZE);
@@ -233,14 +219,14 @@ int eth_register(struct eth_device *dev)
dev->state = ETH_STATE_INIT;
dev->next = eth_devices;
+ dev->index = index++;
return 0;
}
int eth_initialize(bd_t *bis)
{
- int eth_number = 0;
-
+ int num_devices = 0;
eth_devices = NULL;
eth_current = NULL;
@@ -281,7 +267,7 @@ int eth_initialize(bd_t *bis)
show_boot_progress (65);
do {
- if (eth_number)
+ if (dev->index)
puts (", ");
printf("%s", dev->name);
@@ -294,18 +280,18 @@ int eth_initialize(bd_t *bis)
if (strchr(dev->name, ' '))
puts("\nWarning: eth device name has a space!\n");
- if (eth_write_hwaddr(dev, "eth", eth_number))
+ if (eth_write_hwaddr(dev, "eth", dev->index))
puts("\nWarning: failed to set MAC address\n");
- eth_number++;
dev = dev->next;
+ num_devices++;
} while(dev != eth_devices);
eth_current_changed();
putc ('\n');
}
- return eth_number;
+ return num_devices;
}
#ifdef CONFIG_MCAST_TFTP
@@ -356,7 +342,6 @@ u32 ether_crc (size_t len, unsigned char const *p)
int eth_init(bd_t *bis)
{
- int eth_number;
struct eth_device *old_current, *dev;
if (!eth_current) {
@@ -365,16 +350,14 @@ int eth_init(bd_t *bis)
}
/* Sync environment with network devices */
- eth_number = 0;
dev = eth_devices;
do {
uchar env_enetaddr[6];
- if (eth_getenv_enetaddr_by_index("eth", eth_number,
+ if (eth_getenv_enetaddr_by_index("eth", dev->index,
env_enetaddr))
memcpy(dev->enetaddr, env_enetaddr, 6);
- ++eth_number;
dev = dev->next;
} while (dev != eth_devices);