pf_change_a
pf_change_a(&SACK_START, &th->th_sum,
pf_change_a(&SACK_END, &th->th_sum,
pf_change_a(&saddr->v4.s_addr, pd->ip_sum,
pf_change_a(&saddr->v4.s_addr,
pf_change_a(&daddr->v4.s_addr, pd->ip_sum,
pf_change_a(&daddr->v4.s_addr,
pf_change_a(&saddr->v4.s_addr,
pf_change_a(&daddr->v4.s_addr,
pf_change_a(&th->th_seq, &th->th_sum,
pf_change_a(&th->th_seq, &th->th_sum, htonl(seq +
pf_change_a(&th->th_ack, &th->th_sum, htonl(ack), 0);
pf_change_a(&th->th_seq, &th->th_sum, htonl(seq +
pf_change_a(&th->th_ack, &th->th_sum, htonl(ack), 0);
pf_change_a(&saddr->v4.s_addr,
pf_change_a(&daddr->v4.s_addr,
pf_change_a(&th.th_seq, icmpsum,
pf_change_a(&pd->src->v4.s_addr,
pf_change_a(&pd->dst->v4.s_addr,
pf_change_a(&opt[2],
pf_change_a(&opt[6],
void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);