inject
rc = inject(p->tx, buf, len);
rc = inject(p->tx, buf, len);
rc = inject(p->tx, p->packet, p->packet_len);
rc = inject(fd, buf, sizeof(buf));
int inject(int fd, void *buf, int len);
rc = inject(p->tx, p->packet, p->packet_len);
rc = inject(p->tx, p->packet, p->packet_len);
inject(tx, lame, len);
inject(fd, wh, len, ¶ms);