diff options
Diffstat (limited to 'include/osmocom/core/msgb.h')
| -rw-r--r-- | include/osmocom/core/msgb.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/osmocom/core/msgb.h b/include/osmocom/core/msgb.h index 0c51ce26..e05d37f0 100644 --- a/include/osmocom/core/msgb.h +++ b/include/osmocom/core/msgb.h @@ -60,6 +60,7 @@ struct msgb { unsigned char _data[0]; /*!< optional immediate data array */ }; +extern struct msgb *msgb_alloc_c(const void *ctx, uint16_t size, const char *name); extern struct msgb *msgb_alloc(uint16_t size, const char *name); extern void msgb_free(struct msgb *m); extern void msgb_enqueue(struct llist_head *queue, struct msgb *msg); @@ -68,9 +69,11 @@ extern void msgb_reset(struct msgb *m); uint16_t msgb_length(const struct msgb *msg); extern const char *msgb_hexdump(const struct msgb *msg); char *msgb_hexdump_buf(char *buf, size_t buf_len, const struct msgb *msg); +char *msgb_hexdump_c(const void *ctx, const struct msgb *msg); extern int msgb_resize_area(struct msgb *msg, uint8_t *area, int old_size, int new_size); extern struct msgb *msgb_copy(const struct msgb *msg, const char *name); +extern struct msgb *msgb_copy_c(const void *ctx, const struct msgb *msg, const char *name); static int msgb_test_invariant(const struct msgb *msg) __attribute__((pure)); /*! Free all msgbs from a queue built with msgb_enqueue(). @@ -501,6 +504,29 @@ static inline int msgb_l3trim(struct msgb *msg, int l3len) return msgb_trim(msg, (msg->l3h - msg->data) + l3len); } +/*! Allocate message buffer with specified headroom from specified talloc context. + * \param[in] ctx talloc context from which to allocate + * \param[in] size size in bytes, including headroom + * \param[in] headroom headroom in bytes + * \param[in] name human-readable name + * \returns allocated message buffer with specified headroom + * + * This function is a convenience wrapper around \ref msgb_alloc + * followed by \ref msgb_reserve in order to create a new \ref msgb with + * user-specified amount of headroom. + */ +static inline struct msgb *msgb_alloc_headroom_c(const void *ctx, int size, int headroom, + const char *name) +{ + osmo_static_assert(size > headroom, headroom_bigger); + + struct msgb *msg = msgb_alloc_c(ctx, size, name); + if (msg) + msgb_reserve(msg, headroom); + return msg; +} + + /*! Allocate message buffer with specified headroom * \param[in] size size in bytes, including headroom * \param[in] headroom headroom in bytes |