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在構建Android內核以啓用隨機wifi macaddress時出現錯誤。添加的語言是這樣的:未定義對prandom_u32的引用
if (randomize_mac && (changes & IFF_UP) && !(old_flags & IFF_UP)) {
/* randomize MAC whenever interface is brought up */
struct sockaddr sa;
unsigned int mac4;
unsigned short mac2;
mac4 = prandom_u32();
mac2 = prandom_u32();
memcpy(sa.sa_data, &mac4, sizeof(mac4));
memcpy((char *)sa.sa_data + sizeof(mac4), &mac2, sizeof(mac2));
if (!is_valid_ether_addr(sa.sa_data))
sa.sa_data[5] = 1;
sa.sa_data[0] &= 0xFC;
sa.sa_family = dev->type;
dev_set_mac_address(dev, &sa);
}
return ret;
}`
我已經添加在頂部以下內容:
u32 prandom_u32(void);
但仍然得到錯誤。請幫忙