Symbol: TCPCB_TAGBITS
net/ipv4/tcp_input.c
1981
if ((TCP_SKB_CB(prev)->sacked & TCPCB_TAGBITS) != TCPCB_SACKED_ACKED)
net/ipv4/tcp_input.c
2069
((TCP_SKB_CB(skb)->sacked & TCPCB_TAGBITS) != TCPCB_SACKED_ACKED) ||