Linux TCP/IP源码分析_socket API

SOCKET编程涉及到的API对应的内核实现基本都在net/socket.c中，对应如下接口：

SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol)
SYSCALL_DEFINE4(socketpair, int, family, int, type, int, protocol, int __user *, usockvec)
SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen)
SYSCALL_DEFINE2(listen, int, fd, int, backlog)
SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen, int, flags)
SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen)
SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, int, addrlen)
SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len)
SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len)
SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len, unsigned, flags, struct sockaddr __user *, addr, int, addr_len)
SYSCALL_DEFINE4(send, int, fd, void __user *, buff, size_t, len, unsigned, flags)
SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size, unsigned, flags, struct sockaddr __user *, addr, int __user *, addr_len)
SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, char __user *, optval, int, optlen)
SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, char __user *, optval, int __user *, optlen)
SYSCALL_DEFINE2(shutdown, int, fd, int, how)
SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned, flags)
SYSCALL_DEFINE3(recvmsg, int, fd, struct msghdr __user *, msg, unsigned int, flags)

目前计划分析TCP/UDP/RAW/Netlink/LOCAL涉及到的常用接口