LINUX_MIB_TCPSACKFAILURES 208 net/ipv4/proc.c SNMP_MIB_ITEM("TCPSackFailures", LINUX_MIB_TCPSACKFAILURES), LINUX_MIB_TCPSACKFAILURES 505 net/ipv4/tcp_timer.c mib_idx = LINUX_MIB_TCPSACKFAILURES;