如何理解这个这几个配置?

net/core/sock_diag.c
net/dccp/diag.c
net/ipv4/inet_diag.c
net/ipv4/raw_diag.c
net/ipv4/tcp_diag.c
net/ipv4/udp_diag.c
net/mptcp/diag.c
net/mptcp/mptcp_diag.c
net/netlink/diag.c
net/packet/diag.c
net/sctp/diag.c
net/smc/smc_diag.c
net/tipc/diag.c
net/unix/diag.c
net/vmw_vsock/diag.c
net/xdp/xsk_diag.c

diag

• https://stackoverflow.com/questions/8236574/how-do-i-use-tcp-diag-with-c

自己写有点难度，但是 ss 命令就是靠这个机制:

@[
    tcp_diag_dump+5
    __inet_diag_dump+110
    netlink_dump+337
    __netlink_dump_start+477
    inet_diag_handler_cmd+196
    sock_diag_rcv_msg+356
    netlink_rcv_skb+88
    netlink_unicast+409
    netlink_sendmsg+546
    ____sys_sendmsg+924
    ___sys_sendmsg+154
    __sys_sendmsg+122
    do_syscall_64+184
    entry_SYSCALL_64_after_hwframe+119
]: 2

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