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固定mac地址流程是怎样的？如何生成MAC流程？

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问答对人有帮助，内容完整，我也想知道答案 0 固定mac地址流程是怎样的？如何生成MAC流程？ 0
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答案对人有帮助，有参考价值 0 固定mac地址流程：关闭原先的读取MAC地址文件->获取cpu串号->根据cpu串号计算一组能用的MAC地址->设置MAC地址。此种固定方式即使重刷固件也不会改变MAC地址生成MAC流程 1.全局变量system_serial_low为串号的低8位，system_serial_high为串号的高8位，先获取这两个值 2.判断这两个值是否小于0，如果小于0则取其绝对值 3.将这两个值转换为字符串，依次将字符串的两位转化为MAC地址的其中一个数据，例如：读到的system_serial_high = 123456789，system_serial_low=789abcdef 则MAC = 12:34:56:78:ab:cd 4.最终判断MAC地址第一位是否为偶数，如果不是偶数，就当前这位数减1，使其变成偶数。 diff --git a/frameworks/base/services/core/java/com/android/server/WatchdogManagerService.java b/frameworks/base/services/core/java/com/android/server/WatchdogManagerService.java index 2c32ec3d15..57ab825dcd 100644 --- a/frameworks/base/services/core/java/com/android/server/WatchdogManagerService.java +++ b/frameworks/base/services/core/java/com/android/server/WatchdogManagerService.java @@ -155,8 +155,8 @@ public class WatchdogManagerService extends IWatchdogManager.Stub { mWatchdogReceiver = new WatchdogReceiver(); getNetworkManagementService(); - Message msg = mHandler.obtainMessage(MSG_SET_MAC); - mHandler.sendMessageAtTime(msg, SystemClock.uptimeMillis() + 10 * 1000); + //Message msg = mHandler.obtainMessage(MSG_SET_MAC); + //mHandler.sendMessageAtTime(msg, SystemClock.uptimeMillis() + 10 * 1000); } private boolean checkMacAddress(String macAddr) { diff --git a/kernel/drivers/net/ethernet/rockchip/gmac/stmmac_main.c b/kernel/drivers/net/ethernet/rockchip/gmac/stmmac_main.c index 5d2df5b4ff..6860e6e5fd 100755 --- a/kernel/drivers/net/ethernet/rockchip/gmac/stmmac_main.c +++ b/kernel/drivers/net/ethernet/rockchip/gmac/stmmac_main.c @@ -51,6 +51,9 @@ #include "stmmac_ptp.h" #include "stmmac.h" #include "../eth_mac.h" +#include +#include + #undef STMMAC_DEBUG /#define STMMAC_DEBUG/ @@ -1564,6 +1567,195 @@ static int stmmac_get_hw_features(struct stmmac_priv priv) return hw_cap; } + +//整型输入x,输出对应的16进制字符串 +void int_to_hex_str(long int x,char p) +{ + int t,i=0; + if(x<0) + { + x=-x; + p='-'; + p++; + } + if(x==0) + p='0'; + for(i=0;i<10;i++) + { + t=x%16; + x=x/16; + if(t<10) + (p+9-i)=t+'0'; + else + (p+9-i)=t+'A'-10; + if(x==0) + { + t=9-i; + break; + } + } + for( i=0;i<10-t;i++) + { + (p+i)=(p+t+i); + (p+t+i)=''; + } +} + +/ + * 将字符转换为数值 + * / +int c2i(char ch) +{ + if(isdigit(ch)) + return ch - 48; + + if( ch < 'A' \|\| (ch > 'F' && ch < 'a') \|\| ch > 'z' ) + return -1; + + if(isalpha(ch)) + return isupper(ch) ? ch - 55 : ch - 87; + + return -1; +} + +/ + * 功能：将十六进制字符串转换为整型(int)数值 + * / +int hex2dec(char hex) +{ + int len; + int num = 0; + int temp; + int bits; + int i; + + len = strlen(hex); + + for (i=0, temp=0; i + { + temp = c2i( (hex + i) ); + bits = (len - i - 1) 4; + temp = temp << bits; + + num = num \| temp; + } + + return num; +} + + +int eth_mac_from_cpu_serial(char addr) +{ + char serial_low[9] = {0}; + char serial_high[9] = {0}; + char addr1[3],addr2[3],addr3[3],addr4[3],addr5[3],addr6[3]; + int final_addr1 = 0; + int i = 0; + long long system_serial_low_final = system_serial_low; + long long system_serial_high_final = system_serial_high; + if (system_serial_low_final == 0 && system_serial_high_final == 0) + { + printk("system_serial_low system_serial_high read errn"); + return -ENODEV; + } + if(system_serial_low_final < 0) + { + system_serial_low_final = -system_serial_low_final; + } + for(i=0;system_serial_low_final < 268435456;i++) + { + + system_serial_low_final = system_serial_low_final 16 + i; + printk("for system_serial_low = %lldn ",system_serial_low_final); + } + if(system_serial_high_final < 0) + { + system_serial_high_final = -system_serial_high_final; + } + for(i=0;system_serial_high_final < 268435456;i++) + { + system_serial_high_final = system_serial_high_final * 16 + i; + printk("for system_serial_high = %lldn ",system_serial_high_final); + msleep(500); + } + + printk("system_serial_low = %d,system_serial_high = %dn",system_serial_low,system_serial_high); + printk("system_serial_low_final = %lld,system_serial_high_final = %lldn",system_serial_low_final,system_serial_high_final); + + int_to_hex_str(system_serial_low_final,serial_low); + int_to_hex_str(system_serial_high_final,serial_high); + printk("system_serial_low = %s,system_serial_high = %sn",serial_low,serial_high); + if(serial_high[0] != '-') + { + addr1[0] = serial_high[0]; + addr1[1] = serial_high[1]; + addr1[2] = ''; + addr2[0] = serial_high[2]; + addr2[1] = serial_high[3]; + addr2[2] = ''; + addr3[0] = serial_high[4]; + addr3[1] = serial_high[5]; + addr3[2] = ''; + addr4[0] = serial_high[6]; + addr4[1] = serial_high[7]; + addr4[2] = ''; + } + else + { + addr1[0] = serial_high[1]; + addr1[1] = serial_high[2]; + addr1[2] = ''; + addr2[0] = serial_high[3]; + addr2[1] = serial_high[4]; + addr2[2] = ''; + addr3[0] = serial_high[5]; + addr3[1] = serial_high[6]; + addr3[2] = ''; + addr4[0] = serial_high[7]; + addr4[1] = serial_high[8]; + addr4[2] = ''; + + + } + if(serial_low[0] != '-') + { + addr5[0] = serial_low[4]; + addr5[1] = serial_low[5]; + addr5[2] = ''; + addr6[0] = serial_low[6]; + addr6[1] = serial_low[7]; + addr6[2] = ''; + } + else + { + addr5[0] = serial_low[5]; + addr5[1] = serial_low[6]; + addr5[2] = ''; + addr6[0] = serial_low[7]; + addr6[1] = serial_low[8]; + addr6[2] = ''; + + } + final_addr1 = hex2dec(addr1); + if(final_addr1 % 2 != 0) + { + addr[0] = final_addr1 -1 ; + } + else + { + addr[0] = final_addr1; + } + addr[1] = hex2dec(addr2); + addr[2] = hex2dec(addr3); + addr[3] = hex2dec(addr4); + addr[4] = hex2dec(addr5); + addr[5] = hex2dec(addr6); + return 0; + + +} + + /** * stmmac_check_ether_addr: check if the MAC addr is valid * @priv: driver private structure @@ -1577,8 +1769,15 @@ static void stmmac_check_ether_addr(struct stmmac_priv priv) priv->hw->mac->get_umac_addr((void __iomem ) priv->dev->base_addr, priv->dev->dev_addr, 0); - if (!is_valid_ether_addr(priv->dev->dev_addr)) + if (!is_valid_ether_addr(priv->dev->dev_addr)){ + //如果idb里有写入MAC就从idb里获取 eth_mac_idb(priv->dev->dev_addr); + } + if (!is_valid_ether_addr(priv->dev->dev_addr)){ + //如果idb不能设置正确MAC，就自己读取cpu串号，生成MAC + eth_mac_from_cpu_serial(priv->dev->dev_addr); + } + if (!is_valid_ether_addr(priv->dev->dev_addr)) eth_hw_addr_random(priv->dev); }

2022-3-3 09:31:51 评论举报任青