diff options
-rw-r--r-- | src/mbuf.c | 11 | ||||
-rw-r--r-- | src/mbuf.h | 1 |
2 files changed, 12 insertions, 0 deletions
@@ -263,3 +263,14 @@ struct mbuf *m_dup(Slirp *slirp, struct mbuf *m, return n; } + +void *mtod_check(struct mbuf *m, size_t len) +{ + if (m->m_len >= len) { + return m->m_data; + } + + DEBUG_ERROR("mtod failed"); + + return NULL; +} @@ -126,6 +126,7 @@ void m_adj(struct mbuf *, int); int m_copy(struct mbuf *, struct mbuf *, int, int); struct mbuf *m_dup(Slirp *slirp, struct mbuf *m, bool copy_header, size_t header_size); struct mbuf *dtom(Slirp *, void *); +void *mtod_check(struct mbuf *, size_t len); static inline void ifs_init(struct mbuf *ifm) { |