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authorLuca Boccassi <luca.boccassi@gmail.com>2017-11-16 13:18:21 +0000
committerLuca Boccassi <luca.boccassi@gmail.com>2017-11-16 13:19:21 +0000
commit169a9de21e263aa6599cdc2d87a45ae158d9f509 (patch)
tree54b453b237bd1606b0811b4312155441cc99f017 /lib/librte_mbuf/rte_mbuf.h
parent976be7358289d46cd5ed8131bbf2e2c5a6838d3c (diff)
New upstream version 17.11
Change-Id: Iee75c1267695faa05f289fe9bb512945507a4c45 Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Diffstat (limited to 'lib/librte_mbuf/rte_mbuf.h')
-rw-r--r--lib/librte_mbuf/rte_mbuf.h11
1 files changed, 7 insertions, 4 deletions
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index 7e326bbc..ce8a05dd 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -584,6 +584,9 @@ struct rte_mbuf {
} __rte_cache_aligned;
+/**< Maximum number of nb_segs allowed. */
+#define RTE_MBUF_MAX_NB_SEGS UINT16_MAX
+
/**
* Prefetch the first part of the mbuf
*
@@ -1447,7 +1450,7 @@ static inline struct rte_mbuf *rte_pktmbuf_clone(struct rte_mbuf *md,
{
struct rte_mbuf *mc, *mi, **prev;
uint32_t pktlen;
- uint8_t nseg;
+ uint16_t nseg;
if (unlikely ((mc = rte_pktmbuf_alloc(mp)) == NULL))
return NULL;
@@ -1807,14 +1810,14 @@ static inline const void *rte_pktmbuf_read(const struct rte_mbuf *m,
*
* @return
* - 0, on success.
- * - -EOVERFLOW, if the chain is full (256 entries)
+ * - -EOVERFLOW, if the chain segment limit exceeded
*/
static inline int rte_pktmbuf_chain(struct rte_mbuf *head, struct rte_mbuf *tail)
{
struct rte_mbuf *cur_tail;
/* Check for number-of-segments-overflow */
- if (head->nb_segs + tail->nb_segs >= 1 << (sizeof(head->nb_segs) * 8))
+ if (head->nb_segs + tail->nb_segs > RTE_MBUF_MAX_NB_SEGS)
return -EOVERFLOW;
/* Chain 'tail' onto the old tail */
@@ -1822,7 +1825,7 @@ static inline int rte_pktmbuf_chain(struct rte_mbuf *head, struct rte_mbuf *tail
cur_tail->next = tail;
/* accumulate number of segments and total length. */
- head->nb_segs = (uint8_t)(head->nb_segs + tail->nb_segs);
+ head->nb_segs += tail->nb_segs;
head->pkt_len += tail->pkt_len;
/* pkt_len is only set in the head */