1.struct_ops 在Linux eBPF的struct_ops特性中,内核中原生的结构体可以通过eBPF程序重新定义并替换。这种机制允许eBPF程序动态地替换内核中的一些函数指针,并实现用户态对内核操作的自定义。具体来说,整个流程可以通过以下步骤理解: 1.定义新的eBPF结构体:通过eBPF程序定义与内核结构体相似的结构体,这些结构体通常包含...
3.parse =eth_header_parse,4.rebuild =eth_rebuild_header,5.cache =eth_header_cache,6.cache_update =eth_header_cache_update,7};89voidether_setup(structnet_device *dev)10{11dev->header_ops = _header_ops;12dev->type =ARPHRD_ETHER;13dev->hard_header_len =ETH_HLEN;14dev->mtu =ETH_...
boolbpf_struct_ops_get(constvoid*kdata); voidbpf_struct_ops_put(constvoid*kdata); intbpf_struct_ops_map_sys_lookup_elem(structbpf_map*map,void*key, void*value); staticinlineboolbpf_try_module_get(constvoid*data,structmodule*owner)
sk是网络层对于socket的表示,结构体struct sock比较庞大,这里不详细列出,只介绍一些重要的成员, sk_prot和sk_prot_creator,这两个成员指向特定的协议处理函数集,其类型是结构体struct proto,该结构体也是跟struct proto_ops相似的一组协议操作函数集。这两者之间的概念似乎有些混淆,可以这么理解,struct proto_ops的成...
@@ -1612,6 +1612,7 @@ struct bpf_link_ops { struct bpf_link_info *info); int (*update_map)(struct bpf_link *link, struct bpf_map *new_map, struct bpf_map *old_map); __poll_t (*poll)(struct file *file, struct poll_table_struct *pts); }; struct bpf_tramp_link {17...
linux2.4与2.6内核中struct fb_ops区别 /release and usage marking */ struct module *owner; int (*fb_open)(struct fb_info *info, int user 2019-04-02 14:36:51 struct结构体的基本语法 1. struct 结构体 基本语法 struct myabc{ unsigned int a; unsigned int b; unsignedint hjhdf 2021-12...
linux2.4与2.6内核中struct fb_ops区别 /release and usage marking */ struct module *owner; int (*fb_open)(struct fb_info *info, int user 2019-04-02 14:36:51 为什么LWIP中RAM_TCP客户端的字符串会死掉? 。即使重新链接也没作用。有的时候第二个就死,有时候第六个死,随机的。下面是代码。[C...
unionFloatBytes{floatVal;uint8_tBytes[4];};voidFoo(){FloatBytes fb;fb.Val=3.14f;DebugLog(sizeof(fb));// 4 (not 8)// 195, 245, 72, 64DebugLog(fb.Bytes[0], fb.Bytes[1], fb.Bytes[2], fb.Bytes[3]);fb.Bytes[0]=0;fb.Bytes[1]=0;fb.Bytes[2]=0;fb.Bytes[3]=0;DebugLo...
struct fb_info; struct backlight_ops { unsigned int options; const unsigned int options; #define BL_CORE_SUSPENDRESUME (1 << 0) /* Notify the backlight driver some property has changed */ int (*update_status)(struct backlight_device *); int (* const update_status)(struct backlight_de...
#30x5555556865a5 in core::ops::function::FnOnce::call_once::h74662c1aabf327be /home/dy3199/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5 #40x5555556cc4aa in core::ops::function::FnOnce::call_once::h556141b0b8fdbb...