X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_mbuf%2Frte_mbuf.h;h=8e6b4d2923c8ae377c727926ef30516822a3b4a8;hb=62250c1d09780e3d75ae252d9f69ca862e5bfca7;hp=b776a6f248b123e8e0a3659cc43ce507861202e5;hpb=f6ffdf1c2c1cfbb2a3cbce246b545560609abeb5;p=dpdk.git

diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index b776a6f248..8e6b4d2923 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -738,7 +738,8 @@ rte_mbuf_to_baddr(struct rte_mbuf *md)
 #define RTE_MBUF_CLONED(mb)     ((mb)->ol_flags & IND_ATTACHED_MBUF)
 
 /**
- * Returns TRUE if given mbuf is indirect, or FALSE otherwise.
+ * Deprecated.
+ * Use RTE_MBUF_CLONED().
  */
 #define RTE_MBUF_INDIRECT(mb)   RTE_MBUF_CLONED(mb)
 
@@ -1201,7 +1202,8 @@ rte_pktmbuf_priv_size(struct rte_mempool *mp)
  */
 static inline void rte_pktmbuf_reset_headroom(struct rte_mbuf *m)
 {
-	m->data_off = RTE_MIN(RTE_PKTMBUF_HEADROOM, (uint16_t)m->buf_len);
+	m->data_off = (uint16_t)RTE_MIN((uint16_t)RTE_PKTMBUF_HEADROOM,
+					(uint16_t)m->buf_len);
 }
 
 /**
@@ -1359,7 +1361,7 @@ rte_pktmbuf_ext_shinfo_init_helper(void *buf_addr, uint16_t *buf_len,
 	shinfo->fcb_opaque = fcb_opaque;
 	rte_mbuf_ext_refcnt_set(shinfo, 1);
 
-	*buf_len = RTE_PTR_DIFF(shinfo, buf_addr);
+	*buf_len = (uint16_t)RTE_PTR_DIFF(shinfo, buf_addr);
 	return shinfo;
 }
 
@@ -1570,7 +1572,8 @@ __rte_pktmbuf_free_direct(struct rte_mbuf *m)
 static inline void rte_pktmbuf_detach(struct rte_mbuf *m)
 {
 	struct rte_mempool *mp = m->pool;
-	uint32_t mbuf_size, buf_len, priv_size;
+	uint32_t mbuf_size, buf_len;
+	uint16_t priv_size;
 
 	if (RTE_MBUF_HAS_EXTBUF(m))
 		__rte_pktmbuf_free_extbuf(m);
@@ -1578,7 +1581,7 @@ static inline void rte_pktmbuf_detach(struct rte_mbuf *m)
 		__rte_pktmbuf_free_direct(m);
 
 	priv_size = rte_pktmbuf_priv_size(mp);
-	mbuf_size = sizeof(struct rte_mbuf) + priv_size;
+	mbuf_size = (uint32_t)(sizeof(struct rte_mbuf) + priv_size);
 	buf_len = rte_pktmbuf_data_room_size(mp);
 
 	m->priv_size = priv_size;
@@ -1906,7 +1909,10 @@ static inline char *rte_pktmbuf_prepend(struct rte_mbuf *m,
 	if (unlikely(len > rte_pktmbuf_headroom(m)))
 		return NULL;
 
-	m->data_off -= len;
+	/* NB: elaborating the subtraction like this instead of using
+	 *     -= allows us to ensure the result type is uint16_t
+	 *     avoiding compiler warnings on gcc 8.1 at least */
+	m->data_off = (uint16_t)(m->data_off - len);
 	m->data_len = (uint16_t)(m->data_len + len);
 	m->pkt_len  = (m->pkt_len + len);
 
@@ -1966,8 +1972,11 @@ static inline char *rte_pktmbuf_adj(struct rte_mbuf *m, uint16_t len)
 	if (unlikely(len > m->data_len))
 		return NULL;
 
+	/* NB: elaborating the addition like this instead of using
+	 *     += allows us to ensure the result type is uint16_t
+	 *     avoiding compiler warnings on gcc 8.1 at least */
 	m->data_len = (uint16_t)(m->data_len - len);
-	m->data_off += len;
+	m->data_off = (uint16_t)(m->data_off + len);
 	m->pkt_len  = (m->pkt_len - len);
 	return (char *)m->buf_addr + m->data_off;
 }
@@ -2079,8 +2088,11 @@ static inline int rte_pktmbuf_chain(struct rte_mbuf *head, struct rte_mbuf *tail
 	cur_tail = rte_pktmbuf_lastseg(head);
 	cur_tail->next = tail;
 
-	/* accumulate number of segments and total length. */
-	head->nb_segs += tail->nb_segs;
+	/* accumulate number of segments and total length.
+	 * NB: elaborating the addition like this instead of using
+	 *     -= allows us to ensure the result type is uint16_t
+	 *     avoiding compiler warnings on gcc 8.1 at least */
+	head->nb_segs = (uint16_t)(head->nb_segs + tail->nb_segs);
 	head->pkt_len += tail->pkt_len;
 
 	/* pkt_len is only set in the head */
@@ -2110,7 +2122,11 @@ rte_validate_tx_offload(const struct rte_mbuf *m)
 		return 0;
 
 	if (ol_flags & PKT_TX_OUTER_IP_CKSUM)
-		inner_l3_offset += m->outer_l2_len + m->outer_l3_len;
+		/* NB: elaborating the addition like this instead of using
+		 *     += gives the result uint64_t type instead of int,
+		 *     avoiding compiler warnings on gcc 8.1 at least */
+		inner_l3_offset = inner_l3_offset + m->outer_l2_len +
+				  m->outer_l3_len;
 
 	/* Headers are fragmented */
 	if (rte_pktmbuf_data_len(m) < inner_l3_offset + m->l3_len + m->l4_len)
@@ -2155,7 +2171,7 @@ rte_validate_tx_offload(const struct rte_mbuf *m)
 static inline int
 rte_pktmbuf_linearize(struct rte_mbuf *mbuf)
 {
-	int seg_len, copy_len;
+	size_t seg_len, copy_len;
 	struct rte_mbuf *m;
 	struct rte_mbuf *m_next;
 	char *buffer;