TCP_MAXSEG 2883 net/ipv4/tcp.c case TCP_MAXSEG: TCP_MAXSEG 3428 net/ipv4/tcp.c case TCP_MAXSEG: TCP_MAXSEG 369 tools/testing/selftests/net/tcp_mmap.c setsockopt(fdlisten, IPPROTO_TCP, TCP_MAXSEG, TCP_MAXSEG 401 tools/testing/selftests/net/tcp_mmap.c setsockopt(fd, IPPROTO_TCP, TCP_MAXSEG, &mss, sizeof(mss)) == -1) {