Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 169 insertions, 0 deletions

diff --git a/lib/librte_ip_frag/ip_frag_common.h b/lib/librte_ip_frag/ip_frag_common.h
new file mode 100644
index 00000000..cde6ed4a
--- /dev/null
+++ b/lib/librte_ip_frag/ip_frag_common.h
@@ -0,0 +1,169 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _IP_FRAG_COMMON_H_
+#define _IP_FRAG_COMMON_H_
+
+#include "rte_ip_frag.h"
+
+/* logging macros. */
+#ifdef RTE_LIBRTE_IP_FRAG_DEBUG
+
+#define	IP_FRAG_LOG(lvl, fmt, args...)	RTE_LOG(lvl, USER1, fmt, ##args)
+
+#define	IP_FRAG_ASSERT(exp)					\
+if (!(exp))	{							\
+	rte_panic("function %s, line%d\tassert \"" #exp "\" failed\n",	\
+		__func__, __LINE__);					\
+}
+#else
+#define	IP_FRAG_LOG(lvl, fmt, args...)	do {} while(0)
+#define IP_FRAG_ASSERT(exp)	do {} while (0)
+#endif /* IP_FRAG_DEBUG */
+
+#define IPV4_KEYLEN 1
+#define IPV6_KEYLEN 4
+
+/* helper macros */
+#define	IP_FRAG_MBUF2DR(dr, mb)	((dr)->row[(dr)->cnt++] = (mb))
+
+#define IPv6_KEY_BYTES(key) \
+	(key)[0], (key)[1], (key)[2], (key)[3]
+#define IPv6_KEY_BYTES_FMT \
+	"%08" PRIx64 "%08" PRIx64 "%08" PRIx64 "%08" PRIx64
+
+/* internal functions declarations */
+struct rte_mbuf * ip_frag_process(struct ip_frag_pkt *fp,
+		struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb,
+		uint16_t ofs, uint16_t len, uint16_t more_frags);
+
+struct ip_frag_pkt * ip_frag_find(struct rte_ip_frag_tbl *tbl,
+		struct rte_ip_frag_death_row *dr,
+		const struct ip_frag_key *key, uint64_t tms);
+
+struct ip_frag_pkt * ip_frag_lookup(struct rte_ip_frag_tbl *tbl,
+	const struct ip_frag_key *key, uint64_t tms,
+	struct ip_frag_pkt **free, struct ip_frag_pkt **stale);
+
+/* these functions need to be declared here as ip_frag_process relies on them */
+struct rte_mbuf * ipv4_frag_reassemble(const struct ip_frag_pkt *fp);
+struct rte_mbuf * ipv6_frag_reassemble(const struct ip_frag_pkt *fp);
+
+
+
+/*
+ * misc frag key functions
+ */
+
+/* check if key is empty */
+static inline int
+ip_frag_key_is_empty(const struct ip_frag_key * key)
+{
+	uint32_t i;
+	for (i = 0; i < RTE_MIN(key->key_len, RTE_DIM(key->src_dst)); i++)
+		if (key->src_dst[i] != 0)
+			return 0;
+	return 1;
+}
+
+/* empty the key */
+static inline void
+ip_frag_key_invalidate(struct ip_frag_key * key)
+{
+	uint32_t i;
+	for (i = 0; i < key->key_len; i++)
+		key->src_dst[i] = 0;
+}
+
+/* compare two keys */
+static inline int
+ip_frag_key_cmp(const struct ip_frag_key * k1, const struct ip_frag_key * k2)
+{
+	uint32_t i, val;
+	val = k1->id ^ k2->id;
+	for (i = 0; i < k1->key_len; i++)
+		val |= k1->src_dst[i] ^ k2->src_dst[i];
+	return val;
+}
+
+/*
+ * misc fragment functions
+ */
+
+/* put fragment on death row */
+static inline void
+ip_frag_free(struct ip_frag_pkt *fp, struct rte_ip_frag_death_row *dr)
+{
+	uint32_t i, k;
+
+	k = dr->cnt;
+	for (i = 0; i != fp->last_idx; i++) {
+		if (fp->frags[i].mb != NULL) {
+			dr->row[k++] = fp->frags[i].mb;
+			fp->frags[i].mb = NULL;
+		}
+	}
+
+	fp->last_idx = 0;
+	dr->cnt = k;
+}
+
+/* if key is empty, mark key as in use */
+static inline void
+ip_frag_inuse(struct rte_ip_frag_tbl *tbl, const struct  ip_frag_pkt *fp)
+{
+	if (ip_frag_key_is_empty(&fp->key)) {
+		TAILQ_REMOVE(&tbl->lru, fp, lru);
+		tbl->use_entries--;
+	}
+}
+
+/* reset the fragment */
+static inline void
+ip_frag_reset(struct ip_frag_pkt *fp, uint64_t tms)
+{
+	static const struct ip_frag zero_frag = {
+		.ofs = 0,
+		.len = 0,
+		.mb = NULL,
+	};
+
+	fp->start = tms;
+	fp->total_size = UINT32_MAX;
+	fp->frag_size = 0;
+	fp->last_idx = IP_MIN_FRAG_NUM;
+	fp->frags[IP_LAST_FRAG_IDX] = zero_frag;
+	fp->frags[IP_FIRST_FRAG_IDX] = zero_frag;
+}
+
+#endif /* _IP_FRAG_COMMON_H_ */