tag	line	file	source code
ICMP_ECHO	252	net/ipv4/icmp.c	case ICMP_ECHO:
ICMP_ECHO	798	net/ipv4/icmp.c	if (icmph->type != ICMP_ECHO)
ICMP_ECHO	830	net/ipv4/icmp.c	case ICMP_ECHO: