taglinefilesource code
user_mss221include/net/sock.hvolatile unsigned short  user_mss;  /* mss requested by user in ioctl */
user_mss2000net/ipv4/tcp.cif (sk->user_mss)
user_mss2001net/ipv4/tcp.csk->mtu = sk->user_mss;
user_mss2099net/ipv4/tcp.csk->user_mss=val;
user_mss2119net/ipv4/tcp.cval=sk->user_mss;
user_mss484net/ipv4/tcp_input.cif (sk->user_mss)
user_mss485net/ipv4/tcp_input.cnewsk->mtu = sk->user_mss;