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Commit Message
The mbuf header files had some commenting style errors that affected the
API documentation.
Also, the RTE_ prefix was missing on a macro and a definition.
Note: This patch does not touch the offload and attachment flags that are
also missing the RTE_ prefix.
Changes only affecting documentation:
* Removed the MBUF_INVALID_PORT definition from rte_mbuf.h; it is
already defined in rte_mbuf_core.h.
This removal also reestablished the description of the
rte_pktmbuf_reset() function.
* Corrected the comment related to RTE_MBUF_MAX_NB_SEGS.
* Corrected the comment related to PKT_TX_QINQ_PKT.
Changes regarding missing RTE_ prefix:
* Converted the MBUF_RAW_ALLOC_CHECK() macro to an
__rte_mbuf_raw_sanity_check() inline function.
Added backwards compatible macro with the original name.
* Renamed the MBUF_INVALID_PORT definition to RTE_MBUF_PORT_INVALID.
Added backwards compatible definition with the original name.
v2:
* Use RTE_MBUF_PORT_INVALID instead of MBUF_INVALID_PORT in rte_mbuf.c.
v3:
* The functions/macros used in __rte_mbuf_raw_sanity_check() require
RTE_ENABLE_ASSERT or RTE_LIBRTE_MBUF_DEBUG, or they don't use the mbuf
parameter, which generates a compiler waning. So mark the mbuf parameter
__rte_unused if none of them are defined.
Signed-off-by: Morten Brørup <mb@smartsharesystems.com>
---
doc/guides/rel_notes/deprecation.rst | 7 ----
lib/librte_mbuf/rte_mbuf.c | 4 +-
lib/librte_mbuf/rte_mbuf.h | 55 +++++++++++++++++++---------
lib/librte_mbuf/rte_mbuf_core.h | 9 +++--
4 files changed, 45 insertions(+), 30 deletions(-)
@@ -294,13 +294,6 @@ Deprecation Notices
- https://patches.dpdk.org/patch/71457/
- https://patches.dpdk.org/patch/71456/
-* rawdev: The rawdev APIs which take a device-specific structure as
- parameter directly, or indirectly via a "private" pointer inside another
- structure, will be modified to take an additional parameter of the
- structure size. The affected APIs will include ``rte_rawdev_info_get``,
- ``rte_rawdev_configure``, ``rte_rawdev_queue_conf_get`` and
- ``rte_rawdev_queue_setup``.
-
* acl: ``RTE_ACL_CLASSIFY_NUM`` enum value will be removed.
This enum value is not used inside DPDK, while it prevents to add new
classify algorithms without causing an ABI breakage.
@@ -104,7 +104,7 @@ rte_pktmbuf_init(struct rte_mempool *mp,
/* init some constant fields */
m->pool = mp;
m->nb_segs = 1;
- m->port = MBUF_INVALID_PORT;
+ m->port = RTE_MBUF_PORT_INVALID;
rte_mbuf_refcnt_set(m, 1);
m->next = NULL;
}
@@ -207,7 +207,7 @@ __rte_pktmbuf_init_extmem(struct rte_mempool *mp,
/* init some constant fields */
m->pool = mp;
m->nb_segs = 1;
- m->port = MBUF_INVALID_PORT;
+ m->port = RTE_MBUF_PORT_INVALID;
m->ol_flags = EXT_ATTACHED_MBUF;
rte_mbuf_refcnt_set(m, 1);
m->next = NULL;
@@ -554,12 +554,36 @@ __rte_experimental
int rte_mbuf_check(const struct rte_mbuf *m, int is_header,
const char **reason);
-#define MBUF_RAW_ALLOC_CHECK(m) do { \
- RTE_ASSERT(rte_mbuf_refcnt_read(m) == 1); \
- RTE_ASSERT((m)->next == NULL); \
- RTE_ASSERT((m)->nb_segs == 1); \
- __rte_mbuf_sanity_check(m, 0); \
-} while (0)
+#if defined(RTE_ENABLE_ASSERT) || defined(RTE_LIBRTE_MBUF_DEBUG)
+/**
+ * Sanity checks on a reinitialized mbuf.
+ *
+ * Check the consistency of the given reinitialized mbuf.
+ * The function will cause a panic if corruption is detected.
+ *
+ * Check that the mbuf is properly reinitialized (refcnt=1, next=NULL,
+ * nb_segs=1), as done by rte_pktmbuf_prefree_seg().
+ *
+ * @param m
+ * The mbuf to be checked.
+ */
+static __rte_always_inline void
+__rte_mbuf_raw_sanity_check(const struct rte_mbuf *m)
+{
+ RTE_ASSERT(rte_mbuf_refcnt_read(m) == 1);
+ RTE_ASSERT(m->next == NULL);
+ RTE_ASSERT(m->nb_segs == 1);
+ __rte_mbuf_sanity_check(m, 0);
+}
+#else
+static __rte_always_inline void
+__rte_mbuf_raw_sanity_check(const struct rte_mbuf *m __rte_unused)
+{
+ /* Nothing here. */
+}
+#endif
+/** For backwards compatibility. */
+#define MBUF_RAW_ALLOC_CHECK(m) __rte_mbuf_raw_sanity_check(m)
/**
* Allocate an uninitialized mbuf from mempool *mp*.
@@ -586,7 +610,7 @@ static inline struct rte_mbuf *rte_mbuf_raw_alloc(struct rte_mempool *mp)
if (rte_mempool_get(mp, (void **)&m) < 0)
return NULL;
- MBUF_RAW_ALLOC_CHECK(m);
+ __rte_mbuf_raw_sanity_check(m);
return m;
}
@@ -609,10 +633,7 @@ rte_mbuf_raw_free(struct rte_mbuf *m)
{
RTE_ASSERT(!RTE_MBUF_CLONED(m) &&
(!RTE_MBUF_HAS_EXTBUF(m) || RTE_MBUF_HAS_PINNED_EXTBUF(m)));
- RTE_ASSERT(rte_mbuf_refcnt_read(m) == 1);
- RTE_ASSERT(m->next == NULL);
- RTE_ASSERT(m->nb_segs == 1);
- __rte_mbuf_sanity_check(m, 0);
+ __rte_mbuf_raw_sanity_check(m);
rte_mempool_put(m->pool, m);
}
@@ -858,8 +879,6 @@ static inline void rte_pktmbuf_reset_headroom(struct rte_mbuf *m)
* @param m
* The packet mbuf to be reset.
*/
-#define MBUF_INVALID_PORT UINT16_MAX
-
static inline void rte_pktmbuf_reset(struct rte_mbuf *m)
{
m->next = NULL;
@@ -868,7 +887,7 @@ static inline void rte_pktmbuf_reset(struct rte_mbuf *m)
m->vlan_tci = 0;
m->vlan_tci_outer = 0;
m->nb_segs = 1;
- m->port = MBUF_INVALID_PORT;
+ m->port = RTE_MBUF_PORT_INVALID;
m->ol_flags &= EXT_ATTACHED_MBUF;
m->packet_type = 0;
@@ -931,22 +950,22 @@ static inline int rte_pktmbuf_alloc_bulk(struct rte_mempool *pool,
switch (count % 4) {
case 0:
while (idx != count) {
- MBUF_RAW_ALLOC_CHECK(mbufs[idx]);
+ __rte_mbuf_raw_sanity_check(mbufs[idx]);
rte_pktmbuf_reset(mbufs[idx]);
idx++;
/* fall-through */
case 3:
- MBUF_RAW_ALLOC_CHECK(mbufs[idx]);
+ __rte_mbuf_raw_sanity_check(mbufs[idx]);
rte_pktmbuf_reset(mbufs[idx]);
idx++;
/* fall-through */
case 2:
- MBUF_RAW_ALLOC_CHECK(mbufs[idx]);
+ __rte_mbuf_raw_sanity_check(mbufs[idx]);
rte_pktmbuf_reset(mbufs[idx]);
idx++;
/* fall-through */
case 1:
- MBUF_RAW_ALLOC_CHECK(mbufs[idx]);
+ __rte_mbuf_raw_sanity_check(mbufs[idx]);
rte_pktmbuf_reset(mbufs[idx]);
idx++;
/* fall-through */
@@ -272,7 +272,7 @@ extern "C" {
* mbuf 'vlan_tci' & 'vlan_tci_outer' must be valid when this flag is set.
*/
#define PKT_TX_QINQ (1ULL << 49)
-/* this old name is deprecated */
+/** This old name is deprecated. */
#define PKT_TX_QINQ_PKT PKT_TX_QINQ
/**
@@ -686,7 +686,7 @@ struct rte_mbuf_ext_shared_info {
};
};
-/**< Maximum number of nb_segs allowed. */
+/** Maximum number of nb_segs allowed. */
#define RTE_MBUF_MAX_NB_SEGS UINT16_MAX
/**
@@ -714,7 +714,10 @@ struct rte_mbuf_ext_shared_info {
#define RTE_MBUF_DIRECT(mb) \
(!((mb)->ol_flags & (IND_ATTACHED_MBUF | EXT_ATTACHED_MBUF)))
-#define MBUF_INVALID_PORT UINT16_MAX
+/** NULL value for the uint16_t port type. */
+#define RTE_MBUF_PORT_INVALID UINT16_MAX
+/** For backwards compatibility. */
+#define MBUF_INVALID_PORT RTE_MBUF_PORT_INVALID
/**
* A macro that points to an offset into the data in the mbuf.