diff options
Diffstat (limited to 'src/mbuf.h')
| -rw-r--r-- | src/mbuf.h | 39 |
1 files changed, 36 insertions, 3 deletions
@@ -116,19 +116,52 @@ struct mbuf { 0x08 /* when m_free is called on the mbuf, free() \ * it rather than putting it on the free list */ +/* Called by slirp_new */ void m_init(Slirp *); + +/* Called by slirp_cleanup */ void m_cleanup(Slirp *slirp); + +/* Allocate an mbuf */ struct mbuf *m_get(Slirp *); + +/* Release an mbuf (put possibly put it in allocation cache */ void m_free(struct mbuf *); -void m_cat(register struct mbuf *, register struct mbuf *); + +/* Catenate the second buffer to the end of the first buffer, and release the second */ +void m_cat(struct mbuf *, struct mbuf *); + +/* Grow the mbuf to the given size */ void m_inc(struct mbuf *, int); -void m_adj(struct mbuf *, int); -int m_copy(struct mbuf *, struct mbuf *, int, int); + +/* If len is positive, trim that amount from the head of the mbuf. If it is negative, trim it from the tail of the mbuf */ +void m_adj(struct mbuf *, int len); + +/* Copy len bytes from the first buffer at the given offset, to the end of the second buffer */ +int m_copy(struct mbuf *, struct mbuf *, int off, int len); + +/* + * Duplicate the mbuf + * + * copy_header specifies whether the bytes before m_data should also be copied. + * header_size specifies how many bytes are to be reserved before m_data. + */ struct mbuf *m_dup(Slirp *slirp, struct mbuf *m, bool copy_header, size_t header_size); + +/* + * Given a pointer into an mbuf, return the mbuf + * XXX This is a kludge, I should eliminate the need for it + * Fortunately, it's not used often + */ struct mbuf *dtom(Slirp *, void *); + +/* Check that the mbuf contains at least len bytes, and return the data */ void *mtod_check(struct mbuf *, size_t len); + +/* Return the end of the data of the mbuf */ void *m_end(struct mbuf *); +/* Initialize the ifs queue of the mbuf */ static inline void ifs_init(struct mbuf *ifm) { ifm->ifs_next = ifm->ifs_prev = ifm; |