static struct net_bridge_fdb_entry *fdb_create(struct hlist_head *head, struct net_bridge_port *source, const unsigned char *addr, __u16 vid) { struct net_bridge_fdb_entry *fdb; fdb = kmem_cache_alloc(br_fdb_cache, GFP_ATOMIC); if (fdb) { memcpy(fdb->addr.addr, addr, ETH_ALEN...
MDB(Multicast group database)用于保存IP或L2组播地址表。 更多参考《linux网桥简单理解和持久化配置》 1.3 代码分析 br_init()是网桥模块的初始化入口: br_init ->stp_proto_register--STP(Spanning Tree Protocol) ->br_fdb_init--创建bridge_fdb_cache缓存。 ->register_pernet_subsys--注册一个创建network ...
static struct net_bridge_fdb_entry *fdb_create(struct hlist_head *head, struct net_bridge_port *source, const unsigned char *addr, int is_local) { struct net_bridge_fdb_entry *fdb; fdb = kmem_cache_alloc(br_fdb_cache, GFP_ATOMIC); if (fdb) { memcpy(fdb->addr.addr, addr, ETH_AL...
转发数据库初始化为了效率的考虑net_bridge_fdb_entry{}的分配会在kernel cache中进行。这里使用kmem_cache_create()初始化一个br_fdb_cache。另外,之前提到FDB Etnry保存在net_bridge.hash,为了防止DoS攻击,计算Hash的时候引入一个随机因子让其计算不可预测。该因子也在此处初始化。 注册pernet_operationspernet_oper...
br_fdb_cache = kmem_cache_create("bridge_fdb_cache", sizeof(struct net_bridge_fdb_entry),0, SLAB_HWCACHE_ALIGN, NULL); static u32 fdb_salt __read_mostly; get_random_bytes(&fdb_salt, sizeof(fdb_salt)); static struct pernet_operations br_net_ops = { ...
static struct kmem_cache *br_fdb_cache __read_mostly; int __init br_fdb_init(void) { br_fdb_cache = kmem_cache_create("bridge_fdb_cache", sizeof(struct net_bridge_fdb_entry), 0, SLAB_HWCACHE_ALIGN, NULL); if (!br_fdb_cache) return -ENOMEM; get_random_bytes(&fdb_salt, size...
Bridge cache causing disc errors? CRembold Community Beginner , Mar 17, 2018 Copy link to clipboard Most recent scenario: Return from vacation, download 100GB of video, RAW, and JPG photos (bridge PhotoDownloader), browse a couple (presumed LARGE) folders, and the next day "DISC NOT EJE...
First thing I did was go to edit - preferences - cache and purged the cache folder. I then went to the folder that caused the crash and watched the filter - label in the bottom left to see what number it was counting down as it extracted each thumbnail to be cached...
{1F486A52-3CB1-48FD-8F50-B8DC300D9F9D} Memory Mapped Cache Mgr (C:\WINDOWS\system32\propsys.dll) @00000200208F2B00 - traced interfaces: 17344,32BC 13:15:04.91833 COle32ExportDetours::CoCreateInstance @ Created {00000323-0000-0000-C000-000000000046} - ignored 17344,49B8 13:15:04.94126 ...
Power Cache An extra capacitor located at the ends of 12V cables prevents brownouts from sudden demanding spikes and provides an extra power reserve where you need it and when you need it most. CircuitShield Protection The CircuitShield suite of industrial-grade protec...