Symbol: TCP_SACK_SEEN
net/ipv4/syncookies.c
250
tcp_opt->sack_ok = (options & TS_OPT_SACK) ? TCP_SACK_SEEN : 0;
net/ipv4/tcp.c
3622
tp->rx_opt.sack_ok |= TCP_SACK_SEEN;
net/ipv4/tcp_input.c
4602
opt_rx->sack_ok = TCP_SACK_SEEN;