- int (*compress) __P((void *state, PACKET **mret,
- PACKET *mp, int orig_len, int max_len));
+ int (*compress) __P((void *state, PACKETPTR *mret,
+ PACKETPTR mp, int orig_len, int max_len));
+ /* Return compression statistics */
+ void (*comp_stat) __P((void *state, struct compstat *stats));