TCPOPT_SACK_PERM 3427 net/ipv4/tcp_input.c case TCPOPT_SACK_PERM: TCPOPT_SACK_PERM 381 net/ipv4/tcp_output.c *ptr++ = htonl((TCPOPT_SACK_PERM << 24) | TCPOPT_SACK_PERM 405 net/ipv4/tcp_output.c (TCPOPT_SACK_PERM << 8) | TCPOPT_SACK_PERM 401 net/netfilter/nf_conntrack_proto_tcp.c if (opcode == TCPOPT_SACK_PERM