SO_MARK 4283 net/core/filter.c case SO_MARK: SO_MARK 1065 net/core/sock.c case SO_MARK: SO_MARK 1418 net/core/sock.c case SO_MARK: SO_MARK 2274 net/core/sock.c case SO_MARK: SO_MARK 145 samples/bpf/test_cgrp2_sock.c rc = getsockopt(sd, SOL_SOCKET, SO_MARK, &mark, &optlen);