2622 					pf_change_a(&sack.start, &th->th_sum,  in pf_modulate_sack()
2625 					pf_change_a(&sack.end, &th->th_sum,  in pf_modulate_sack()
2798 		th->th_sum = in_cksum(m, len);  in pf_send_tcp()
2822 		th->th_sum = in6_cksum(m, IPPROTO_TCP,  in pf_send_tcp()
5056 				    &th->th_sport, pd->ip_sum, &th->th_sum,  in pf_test_rule()
5073 				    &th->th_sum, &pd->ndaddr,  in pf_test_rule()
5410 					    &th->th_sum, &pd->baddr,  in pf_test_rule()
5477 					    &th->th_sum, &pd->bdaddr,  in pf_test_rule()
5885 				pf_change_a(&th->th_seq, &th->th_sum,  in pf_test_rule()
6105 					    &th->th_sum, &pd->baddr,  in pf_test_rule()
6111 					    &th->th_sum, &pd->baddr,  in pf_test_rule()
6880 			th->th_sum = pf_cksum_fixup(th->th_sum,  in pf_pptp_handler()
6884 			th->th_sum = pf_cksum_fixup(th->th_sum,  in pf_pptp_handler()
7212 			pf_change_a(&th->th_seq, &th->th_sum, htonl(seq +  in pf_test_state_tcp()
7214 			pf_change_a(&th->th_ack, &th->th_sum, htonl(ack), 0);  in pf_test_state_tcp()
7281 			pf_change_a(&th->th_seq, &th->th_sum, htonl(seq +  in pf_test_state_tcp()
7283 			pf_change_a(&th->th_ack, &th->th_sum, htonl(ack), 0);  in pf_test_state_tcp()
7561 			    pd->ip_sum, &th->th_sum, &sk->gwy.addr,  in pf_test_state_tcp()
7568 					    &th->th_sum, &sk->lan.addr,  in pf_test_state_tcp()
7574 					    &th->th_sum, &sk->ext_lan.addr,  in pf_test_state_tcp()
7580 					    &th->th_sum, &sk->ext_gwy.addr,  in pf_test_state_tcp()
7586 					    &th->th_sum, &sk->gwy.addr,  in pf_test_state_tcp()
7593 				    &th->th_sum, &sk->lan.addr,  in pf_test_state_tcp()
8275 					    &th.th_sum, &daddr2->addr,  in pf_test_state_icmp()
8281 					    &th.th_sum, &saddr2->addr,  in pf_test_state_icmp()