1 files changed, 252 insertions, 0 deletions
diff --git a/src/dpdk_lib18/librte_port/rte_port_ras.c b/src/dpdk_lib18/librte_port/rte_port_ras.c
new file mode 100755
index 00000000..b6ab67ab
--- /dev/null
+++ b/src/dpdk_lib18/librte_port/rte_port_ras.c
@@ -0,0 +1,252 @@
+/*-
+ *   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.
+ */
+#include <string.h>
+
+#include <rte_ether.h>
+#include <rte_ip_frag.h>
+#include <rte_cycles.h>
+#include <rte_log.h>
+
+#include "rte_port_ras.h"
+
+#ifndef IPV4_RAS_N_BUCKETS
+#define IPV4_RAS_N_BUCKETS                                 4094
+#endif
+
+#ifndef IPV4_RAS_N_ENTRIES_PER_BUCKET
+#define IPV4_RAS_N_ENTRIES_PER_BUCKET                      8
+#endif
+
+#ifndef IPV4_RAS_N_ENTRIES
+#define IPV4_RAS_N_ENTRIES (IPV4_RAS_N_BUCKETS * IPV4_RAS_N_ENTRIES_PER_BUCKET)
+#endif
+
+struct rte_port_ring_writer_ipv4_ras {
+	struct rte_mbuf *tx_buf[RTE_PORT_IN_BURST_SIZE_MAX];
+	struct rte_ring *ring;
+	uint32_t tx_burst_sz;
+	uint32_t tx_buf_count;
+	struct rte_ip_frag_tbl *frag_tbl;
+	struct rte_ip_frag_death_row death_row;
+};
+
+static void *
+rte_port_ring_writer_ipv4_ras_create(void *params, int socket_id)
+{
+	struct rte_port_ring_writer_ipv4_ras_params *conf =
+			(struct rte_port_ring_writer_ipv4_ras_params *) params;
+	struct rte_port_ring_writer_ipv4_ras *port;
+	uint64_t frag_cycles;
+
+	/* Check input parameters */
+	if (conf == NULL) {
+		RTE_LOG(ERR, PORT, "%s: Parameter conf is NULL\n", __func__);
+		return NULL;
+	}
+	if (conf->ring == NULL) {
+		RTE_LOG(ERR, PORT, "%s: Parameter ring is NULL\n", __func__);
+		return NULL;
+	}
+	if ((conf->tx_burst_sz == 0) ||
+	    (conf->tx_burst_sz > RTE_PORT_IN_BURST_SIZE_MAX)) {
+		RTE_LOG(ERR, PORT, "%s: Parameter tx_burst_sz is invalid\n",
+			__func__);
+		return NULL;
+	}
+
+	/* Memory allocation */
+	port = rte_zmalloc_socket("PORT", sizeof(*port),
+			RTE_CACHE_LINE_SIZE, socket_id);
+	if (port == NULL) {
+		RTE_LOG(ERR, PORT, "%s: Failed to allocate socket\n", __func__);
+		return NULL;
+	}
+
+	/* Create fragmentation table */
+	frag_cycles = (rte_get_tsc_hz() + MS_PER_S - 1) / MS_PER_S * MS_PER_S;
+	frag_cycles *= 100;
+
+	port->frag_tbl = rte_ip_frag_table_create(
+		IPV4_RAS_N_BUCKETS,
+		IPV4_RAS_N_ENTRIES_PER_BUCKET,
+		IPV4_RAS_N_ENTRIES,
+		frag_cycles,
+		socket_id);
+
+	if (port->frag_tbl == NULL) {
+		RTE_LOG(ERR, PORT, "%s: rte_ip_frag_table_create failed\n",
+			__func__);
+		rte_free(port);
+		return NULL;
+	}
+
+	/* Initialization */
+	port->ring = conf->ring;
+	port->tx_burst_sz = conf->tx_burst_sz;
+	port->tx_buf_count = 0;
+
+	return port;
+}
+
+static inline void
+send_burst(struct rte_port_ring_writer_ipv4_ras *p)
+{
+	uint32_t nb_tx;
+
+	nb_tx = rte_ring_sp_enqueue_burst(p->ring, (void **)p->tx_buf,
+			p->tx_buf_count);
+
+	for ( ; nb_tx < p->tx_buf_count; nb_tx++)
+		rte_pktmbuf_free(p->tx_buf[nb_tx]);
+
+	p->tx_buf_count = 0;
+}
+
+static inline void
+process_one(struct rte_port_ring_writer_ipv4_ras *p, struct rte_mbuf *pkt)
+{
+	/* Assume there is no ethernet header */
+	struct ipv4_hdr *pkt_hdr = (struct ipv4_hdr *)
+			(rte_pktmbuf_mtod(pkt, unsigned char *));
+
+	/* Get "Do not fragment" flag and fragment offset */
+	uint16_t frag_field = rte_be_to_cpu_16(pkt_hdr->fragment_offset);
+	uint16_t frag_offset = (uint16_t)(frag_field & IPV4_HDR_OFFSET_MASK);
+	uint16_t frag_flag = (uint16_t)(frag_field & IPV4_HDR_MF_FLAG);
+
+	/* If it is a fragmented packet, then try to reassemble */
+	if ((frag_flag == 0) && (frag_offset == 0))
+		p->tx_buf[p->tx_buf_count++] = pkt;
+	else {
+		struct rte_mbuf *mo;
+		struct rte_ip_frag_tbl *tbl = p->frag_tbl;
+		struct rte_ip_frag_death_row *dr = &p->death_row;
+
+		/* Process this fragment */
+		mo = rte_ipv4_frag_reassemble_packet(tbl, dr, pkt, rte_rdtsc(), pkt_hdr);
+		if (mo != NULL)
+			p->tx_buf[p->tx_buf_count++] = mo;
+
+		rte_ip_frag_free_death_row(&p->death_row, 3);
+	}
+}
+
+static int
+rte_port_ring_writer_ipv4_ras_tx(void *port, struct rte_mbuf *pkt)
+{
+	struct rte_port_ring_writer_ipv4_ras *p =
+			(struct rte_port_ring_writer_ipv4_ras *) port;
+
+	process_one(p, pkt);
+	if (p->tx_buf_count >= p->tx_burst_sz)
+		send_burst(p);
+
+	return 0;
+}
+
+static int
+rte_port_ring_writer_ipv4_ras_tx_bulk(void *port,
+		struct rte_mbuf **pkts,
+		uint64_t pkts_mask)
+{
+	struct rte_port_ring_writer_ipv4_ras *p =
+			(struct rte_port_ring_writer_ipv4_ras *) port;
+
+	if ((pkts_mask & (pkts_mask + 1)) == 0) {
+		uint64_t n_pkts = __builtin_popcountll(pkts_mask);
+		uint32_t i;
+
+		for (i = 0; i < n_pkts; i++) {
+			struct rte_mbuf *pkt = pkts[i];
+
+			process_one(p, pkt);
+			if (p->tx_buf_count >= p->tx_burst_sz)
+				send_burst(p);
+		}
+	} else {
+		for ( ; pkts_mask; ) {
+			uint32_t pkt_index = __builtin_ctzll(pkts_mask);
+			uint64_t pkt_mask = 1LLU << pkt_index;
+			struct rte_mbuf *pkt = pkts[pkt_index];
+
+			process_one(p, pkt);
+			if (p->tx_buf_count >= p->tx_burst_sz)
+				send_burst(p);
+
+			pkts_mask &= ~pkt_mask;
+		}
+	}
+
+	return 0;
+}
+
+static int
+rte_port_ring_writer_ipv4_ras_flush(void *port)
+{
+	struct rte_port_ring_writer_ipv4_ras *p =
+			(struct rte_port_ring_writer_ipv4_ras *) port;
+
+	if (p->tx_buf_count > 0)
+		send_burst(p);
+
+	return 0;
+}
+
+static int
+rte_port_ring_writer_ipv4_ras_free(void *port)
+{
+	struct rte_port_ring_writer_ipv4_ras *p =
+			(struct rte_port_ring_writer_ipv4_ras *) port;
+
+	if (port == NULL) {
+		RTE_LOG(ERR, PORT, "%s: Parameter port is NULL\n", __func__);
+		return -1;
+	}
+
+	rte_port_ring_writer_ipv4_ras_flush(port);
+	rte_ip_frag_table_destroy(p->frag_tbl);
+	rte_free(port);
+
+	return 0;
+}
+
+/*
+ * Summary of port operations
+ */
+struct rte_port_out_ops rte_port_ring_writer_ipv4_ras_ops = {
+	.f_create = rte_port_ring_writer_ipv4_ras_create,
+	.f_free = rte_port_ring_writer_ipv4_ras_free,
+	.f_tx = rte_port_ring_writer_ipv4_ras_tx,
+	.f_tx_bulk = rte_port_ring_writer_ipv4_ras_tx_bulk,
+	.f_flush = rte_port_ring_writer_ipv4_ras_flush,
+};