[dpdk-dev] [PATCH v3 4/5] examples/flow_classify: flow classify sample application
Bernard Iremonger
bernard.iremonger at intel.com
Thu Aug 31 16:54:46 CEST 2017
The flow_classify sample application exercises the following
librte_flow_classify API's:
rte_flow_classify_create
rte_flow_classify_validate
rte_flow_classify_destroy
rte_flow_classify_query
It sets up the IPv4 ACL field definitions.
It creates table_acl and adds and deletes rules using the
librte_table API.
It uses a file of IPv4 five tuple rules for input.
Signed-off-by: Bernard Iremonger <bernard.iremonger at intel.com>
---
examples/flow_classify/Makefile | 57 ++
examples/flow_classify/flow_classify.c | 879 +++++++++++++++++++++++++++++
examples/flow_classify/ipv4_rules_file.txt | 14 +
3 files changed, 950 insertions(+)
create mode 100644 examples/flow_classify/Makefile
create mode 100644 examples/flow_classify/flow_classify.c
create mode 100644 examples/flow_classify/ipv4_rules_file.txt
diff --git a/examples/flow_classify/Makefile b/examples/flow_classify/Makefile
new file mode 100644
index 0000000..eecdde1
--- /dev/null
+++ b/examples/flow_classify/Makefile
@@ -0,0 +1,57 @@
+# BSD LICENSE
+#
+# Copyright(c) 2017 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.
+
+ifeq ($(RTE_SDK),)
+$(error "Please define RTE_SDK environment variable")
+endif
+
+# Default target, can be overridden by command line or environment
+RTE_TARGET ?= x86_64-native-linuxapp-gcc
+
+include $(RTE_SDK)/mk/rte.vars.mk
+
+# binary name
+APP = flow_classify
+
+
+# all source are stored in SRCS-y
+SRCS-y := flow_classify.c
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+
+# workaround for a gcc bug with noreturn attribute
+# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603
+ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
+CFLAGS_main.o += -Wno-return-type
+endif
+
+include $(RTE_SDK)/mk/rte.extapp.mk
diff --git a/examples/flow_classify/flow_classify.c b/examples/flow_classify/flow_classify.c
new file mode 100644
index 0000000..99b3e6e
--- /dev/null
+++ b/examples/flow_classify/flow_classify.c
@@ -0,0 +1,879 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2017 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 <stdint.h>
+#include <inttypes.h>
+#include <getopt.h>
+
+#include <rte_eal.h>
+#include <rte_ethdev.h>
+#include <rte_cycles.h>
+#include <rte_lcore.h>
+#include <rte_mbuf.h>
+#include <rte_flow.h>
+#include <rte_flow_classify.h>
+#include <rte_table_acl.h>
+
+#define RX_RING_SIZE 128
+#define TX_RING_SIZE 512
+
+#define NUM_MBUFS 8191
+#define MBUF_CACHE_SIZE 250
+#define BURST_SIZE 32
+#define MAX_NUM_CLASSIFY 30
+#define FLOW_CLASSIFY_MAX_RULE_NUM 91
+#define FLOW_CLASSIFY_MAX_PRIORITY 8
+#define PROTO_TCP 6
+#define PROTO_UDP 17
+#define PROTO_SCTP 132
+
+#define COMMENT_LEAD_CHAR ('#')
+#define OPTION_RULE_IPV4 "rule_ipv4"
+#define RTE_LOGTYPE_FLOW_CLASSIFY RTE_LOGTYPE_USER3
+#define flow_classify_log(format, ...) \
+ RTE_LOG(ERR, FLOW_CLASSIFY, format, ##__VA_ARGS__)
+
+#define uint32_t_to_char(ip, a, b, c, d) do {\
+ *a = (unsigned char)(ip >> 24 & 0xff);\
+ *b = (unsigned char)(ip >> 16 & 0xff);\
+ *c = (unsigned char)(ip >> 8 & 0xff);\
+ *d = (unsigned char)(ip & 0xff);\
+ } while (0)
+
+#define GET_CB_FIELD(in, fd, base, lim, dlm) do { \
+ unsigned long val; \
+ char *end; \
+ errno = 0; \
+ val = strtoul((in), &end, (base)); \
+ if (errno != 0 || end[0] != (dlm) || val > (lim)) \
+ return -EINVAL; \
+ (fd) = (typeof(fd))val; \
+ (in) = end + 1; \
+} while (0)
+
+enum {
+ CB_FLD_SRC_ADDR,
+ CB_FLD_DST_ADDR,
+ CB_FLD_SRC_PORT,
+ CB_FLD_SRC_PORT_DLM,
+ CB_FLD_SRC_PORT_MASK,
+ CB_FLD_DST_PORT,
+ CB_FLD_DST_PORT_DLM,
+ CB_FLD_DST_PORT_MASK,
+ CB_FLD_PROTO,
+ CB_FLD_PRIORITY,
+ CB_FLD_NUM,
+};
+
+static struct{
+ const char *rule_ipv4_name;
+} parm_config;
+const char cb_port_delim[] = ":";
+
+static const struct rte_eth_conf port_conf_default = {
+ .rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
+};
+
+static void *table_acl;
+uint32_t entry_size;
+static int udp_num_classify;
+static int tcp_num_classify;
+static int sctp_num_classify;
+
+/* ACL field definitions for IPv4 5 tuple rule */
+
+enum {
+ PROTO_FIELD_IPV4,
+ SRC_FIELD_IPV4,
+ DST_FIELD_IPV4,
+ SRCP_FIELD_IPV4,
+ DSTP_FIELD_IPV4,
+ NUM_FIELDS_IPV4
+};
+
+enum {
+ PROTO_INPUT_IPV4,
+ SRC_INPUT_IPV4,
+ DST_INPUT_IPV4,
+ SRCP_DESTP_INPUT_IPV4
+};
+
+static struct rte_acl_field_def ipv4_defs[NUM_FIELDS_IPV4] = {
+ /* first input field - always one byte long. */
+ {
+ .type = RTE_ACL_FIELD_TYPE_BITMASK,
+ .size = sizeof(uint8_t),
+ .field_index = PROTO_FIELD_IPV4,
+ .input_index = PROTO_INPUT_IPV4,
+ .offset = sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, next_proto_id),
+ },
+ /* next input field (IPv4 source address) - 4 consecutive bytes. */
+ {
+ /* rte_flow uses a bit mask for IPv4 addresses */
+ .type = RTE_ACL_FIELD_TYPE_BITMASK,
+ .size = sizeof(uint32_t),
+ .field_index = SRC_FIELD_IPV4,
+ .input_index = SRC_INPUT_IPV4,
+ .offset = sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, src_addr),
+ },
+ /* next input field (IPv4 destination address) - 4 consecutive bytes. */
+ {
+ /* rte_flow uses a bit mask for IPv4 addresses */
+ .type = RTE_ACL_FIELD_TYPE_BITMASK,
+ .size = sizeof(uint32_t),
+ .field_index = DST_FIELD_IPV4,
+ .input_index = DST_INPUT_IPV4,
+ .offset = sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, dst_addr),
+ },
+ /*
+ * Next 2 fields (src & dst ports) form 4 consecutive bytes.
+ * They share the same input index.
+ */
+ {
+ /* rte_flow uses a bit mask for protocol ports */
+ .type = RTE_ACL_FIELD_TYPE_BITMASK,
+ .size = sizeof(uint16_t),
+ .field_index = SRCP_FIELD_IPV4,
+ .input_index = SRCP_DESTP_INPUT_IPV4,
+ .offset = sizeof(struct ether_hdr) +
+ sizeof(struct ipv4_hdr) +
+ offsetof(struct tcp_hdr, src_port),
+ },
+ {
+ /* rte_flow uses a bit mask for protocol ports */
+ .type = RTE_ACL_FIELD_TYPE_BITMASK,
+ .size = sizeof(uint16_t),
+ .field_index = DSTP_FIELD_IPV4,
+ .input_index = SRCP_DESTP_INPUT_IPV4,
+ .offset = sizeof(struct ether_hdr) +
+ sizeof(struct ipv4_hdr) +
+ offsetof(struct tcp_hdr, dst_port),
+ },
+};
+
+/* flow classify data */
+static struct rte_flow_classify *udp_flow_classify[MAX_NUM_CLASSIFY];
+static struct rte_flow_classify *tcp_flow_classify[MAX_NUM_CLASSIFY];
+static struct rte_flow_classify *sctp_flow_classify[MAX_NUM_CLASSIFY];
+
+static struct rte_flow_classify_5tuple_stats udp_ntuple_stats;
+static struct rte_flow_classify_stats udp_classify_stats = {
+ .available_space = BURST_SIZE,
+ .used_space = 0,
+ .stats = (void **)&udp_ntuple_stats
+};
+
+static struct rte_flow_classify_5tuple_stats tcp_ntuple_stats;
+static struct rte_flow_classify_stats tcp_classify_stats = {
+ .available_space = BURST_SIZE,
+ .used_space = 0,
+ .stats = (void **)&tcp_ntuple_stats
+};
+
+static struct rte_flow_classify_5tuple_stats sctp_ntuple_stats;
+static struct rte_flow_classify_stats sctp_classify_stats = {
+ .available_space = BURST_SIZE,
+ .used_space = 0,
+ .stats = (void **)&sctp_ntuple_stats
+};
+
+/* parameters for rte_flow_classify_validate and rte_flow_classify_create */
+
+static struct rte_flow_item eth_item = { RTE_FLOW_ITEM_TYPE_ETH,
+ 0, 0, 0 };
+static struct rte_flow_item end_item = { RTE_FLOW_ITEM_TYPE_END,
+ 0, 0, 0 };
+
+/* sample actions:
+ * "actions count / end"
+ */
+static struct rte_flow_action count_action = { RTE_FLOW_ACTION_TYPE_COUNT, 0};
+static struct rte_flow_action end_action = { RTE_FLOW_ACTION_TYPE_END, 0};
+static struct rte_flow_action actions[2];
+
+/* sample attributes */
+static struct rte_flow_attr attr;
+
+/* flow_classify.c: * Based on DPDK skeleton forwarding example. */
+
+/*
+ * Initializes a given port using global settings and with the RX buffers
+ * coming from the mbuf_pool passed as a parameter.
+ */
+static inline int
+port_init(uint8_t port, struct rte_mempool *mbuf_pool)
+{
+ struct rte_eth_conf port_conf = port_conf_default;
+ struct ether_addr addr;
+ const uint16_t rx_rings = 1, tx_rings = 1;
+ int retval;
+ uint16_t q;
+
+ if (port >= rte_eth_dev_count())
+ return -1;
+
+ /* Configure the Ethernet device. */
+ retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
+ if (retval != 0)
+ return retval;
+
+ /* Allocate and set up 1 RX queue per Ethernet port. */
+ for (q = 0; q < rx_rings; q++) {
+ retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
+ rte_eth_dev_socket_id(port), NULL, mbuf_pool);
+ if (retval < 0)
+ return retval;
+ }
+
+ /* Allocate and set up 1 TX queue per Ethernet port. */
+ for (q = 0; q < tx_rings; q++) {
+ retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
+ rte_eth_dev_socket_id(port), NULL);
+ if (retval < 0)
+ return retval;
+ }
+
+ /* Start the Ethernet port. */
+ retval = rte_eth_dev_start(port);
+ if (retval < 0)
+ return retval;
+
+ /* Display the port MAC address. */
+ rte_eth_macaddr_get(port, &addr);
+ printf("Port %u MAC: %02" PRIx8 " %02" PRIx8 " %02" PRIx8
+ " %02" PRIx8 " %02" PRIx8 " %02" PRIx8 "\n",
+ port,
+ addr.addr_bytes[0], addr.addr_bytes[1],
+ addr.addr_bytes[2], addr.addr_bytes[3],
+ addr.addr_bytes[4], addr.addr_bytes[5]);
+
+ /* Enable RX in promiscuous mode for the Ethernet device. */
+ rte_eth_promiscuous_enable(port);
+
+ return 0;
+}
+
+/*
+ * The lcore main. This is the main thread that does the work, reading from
+ * an input port classifying the packets and writing to an output port.
+ */
+static __attribute__((noreturn)) void
+lcore_main(void)
+{
+ struct rte_flow_error error;
+ const uint8_t nb_ports = rte_eth_dev_count();
+ uint8_t port;
+ int ret;
+ int i;
+
+ /*
+ * Check that the port is on the same NUMA node as the polling thread
+ * for best performance.
+ */
+ for (port = 0; port < nb_ports; port++)
+ if (rte_eth_dev_socket_id(port) > 0 &&
+ rte_eth_dev_socket_id(port) !=
+ (int)rte_socket_id())
+ printf("\n\n");
+ printf("WARNING: port %u is on remote NUMA node\n",
+ port);
+ printf("to polling thread.\n");
+ printf("Performance will not be optimal.\n");
+
+ printf("\nCore %u forwarding packets. [Ctrl+C to quit]\n",
+ rte_lcore_id());
+
+ /* Run until the application is quit or killed. */
+ for (;;) {
+ /*
+ * Receive packets on a port, classify them and forward them
+ * on the paired port.
+ * The mapping is 0 -> 1, 1 -> 0, 2 -> 3, 3 -> 2, etc.
+ */
+ for (port = 0; port < nb_ports; port++) {
+
+ /* Get burst of RX packets, from first port of pair. */
+ struct rte_mbuf *bufs[BURST_SIZE];
+ const uint16_t nb_rx = rte_eth_rx_burst(port, 0,
+ bufs, BURST_SIZE);
+
+ if (unlikely(nb_rx == 0))
+ continue;
+
+ for (i = 0; i < MAX_NUM_CLASSIFY; i++) {
+ if (udp_flow_classify[i]) {
+ ret = rte_flow_classify_query(
+ table_acl,
+ udp_flow_classify[i],
+ bufs, nb_rx,
+ &udp_classify_stats, &error);
+ if (ret)
+ printf(
+ "udp flow classify[%d] query failed port=%u\n\n",
+ i, port);
+ else
+ printf(
+ "udp rule [%d] counter1=%lu used_space=%d\n\n",
+ i, udp_ntuple_stats.counter1,
+ udp_classify_stats.used_space);
+ }
+ }
+
+ for (i = 0; i < MAX_NUM_CLASSIFY; i++) {
+ if (tcp_flow_classify[i]) {
+ ret = rte_flow_classify_query(
+ table_acl,
+ tcp_flow_classify[i],
+ bufs, nb_rx,
+ &tcp_classify_stats, &error);
+ if (ret)
+ printf(
+ "tcp flow classify[%d] query failed port=%u\n\n",
+ i, port);
+ else
+ printf(
+ "tcp rule [%d] counter1=%lu used_space=%d\n\n",
+ i, tcp_ntuple_stats.counter1,
+ tcp_classify_stats.used_space);
+ }
+ }
+
+ for (i = 0; i < MAX_NUM_CLASSIFY; i++) {
+ if (sctp_flow_classify[i]) {
+ ret = rte_flow_classify_query(
+ table_acl,
+ sctp_flow_classify[i],
+ bufs, nb_rx,
+ &sctp_classify_stats, &error);
+ if (ret)
+ printf(
+ "sctp flow classify[%d] query failed port=%u\n\n",
+ i, port);
+ else
+ printf(
+ "sctp rule [%d] counter1=%lu used_space=%d\n\n",
+ i, sctp_ntuple_stats.counter1,
+ sctp_classify_stats.used_space);
+ }
+ }
+
+ /* Send burst of TX packets, to second port of pair. */
+ const uint16_t nb_tx = rte_eth_tx_burst(port ^ 1, 0,
+ bufs, nb_rx);
+
+ /* Free any unsent packets. */
+ if (unlikely(nb_tx < nb_rx)) {
+ uint16_t buf;
+
+ for (buf = nb_tx; buf < nb_rx; buf++)
+ rte_pktmbuf_free(bufs[buf]);
+ }
+ }
+ }
+}
+
+/*
+ * Parse IPv4 5 tuple rules file, ipv4_rules_file.txt.
+ * Expected format:
+ * <src_ipv4_addr>'/'<masklen> <space> \
+ * <dst_ipv4_addr>'/'<masklen> <space> \
+ * <src_port> <space> ":" <src_port_mask> <space> \
+ * <dst_port> <space> ":" <dst_port_mask> <space> \
+ * <proto>'/'<proto_mask> <space> \
+ * <priority>
+ */
+
+static int
+parse_ipv4_net(const char *in, uint32_t *addr, uint32_t *mask_len)
+{
+ uint8_t a, b, c, d, m;
+
+ GET_CB_FIELD(in, a, 0, UINT8_MAX, '.');
+ GET_CB_FIELD(in, b, 0, UINT8_MAX, '.');
+ GET_CB_FIELD(in, c, 0, UINT8_MAX, '.');
+ GET_CB_FIELD(in, d, 0, UINT8_MAX, '/');
+ GET_CB_FIELD(in, m, 0, sizeof(uint32_t) * CHAR_BIT, 0);
+
+ addr[0] = IPv4(a, b, c, d);
+ mask_len[0] = m;
+
+ return 0;
+}
+
+static int
+parse_ipv4_5tuple_rule(char *str, struct rte_eth_ntuple_filter *ntuple_filter)
+{
+ int i, ret;
+ char *s, *sp, *in[CB_FLD_NUM];
+ static const char *dlm = " \t\n";
+ int dim = CB_FLD_NUM;
+
+ s = str;
+ for (i = 0; i != dim; i++, s = NULL) {
+ in[i] = strtok_r(s, dlm, &sp);
+ if (in[i] == NULL)
+ return -EINVAL;
+ }
+
+ ret = parse_ipv4_net(in[CB_FLD_SRC_ADDR],
+ &ntuple_filter->src_ip,
+ &ntuple_filter->src_ip_mask);
+ if (ret != 0) {
+ flow_classify_log("failed to read source address/mask: %s\n",
+ in[CB_FLD_SRC_ADDR]);
+ return ret;
+ }
+
+ ret = parse_ipv4_net(in[CB_FLD_DST_ADDR],
+ &ntuple_filter->dst_ip,
+ &ntuple_filter->dst_ip_mask);
+ if (ret != 0) {
+ flow_classify_log("failed to read source address/mask: %s\n",
+ in[CB_FLD_DST_ADDR]);
+ return ret;
+ }
+
+ GET_CB_FIELD(in[CB_FLD_SRC_PORT],
+ ntuple_filter->src_port, 0, UINT16_MAX, 0);
+
+ if (strncmp(in[CB_FLD_SRC_PORT_DLM], cb_port_delim,
+ sizeof(cb_port_delim)) != 0)
+ return -EINVAL;
+
+ GET_CB_FIELD(in[CB_FLD_SRC_PORT_MASK],
+ ntuple_filter->src_port_mask, 0, UINT16_MAX, 0);
+
+ GET_CB_FIELD(in[CB_FLD_DST_PORT],
+ ntuple_filter->dst_port, 0, UINT16_MAX, 0);
+
+ if (strncmp(in[CB_FLD_DST_PORT_DLM], cb_port_delim,
+ sizeof(cb_port_delim)) != 0)
+ return -EINVAL;
+
+ GET_CB_FIELD(in[CB_FLD_DST_PORT_MASK],
+ ntuple_filter->dst_port_mask, 0, UINT16_MAX, 0);
+
+ GET_CB_FIELD(in[CB_FLD_PROTO], ntuple_filter->proto,
+ 0, UINT8_MAX, '/');
+ GET_CB_FIELD(in[CB_FLD_PROTO], ntuple_filter->proto_mask,
+ 0, UINT8_MAX, 0);
+
+ GET_CB_FIELD(in[CB_FLD_PRIORITY], ntuple_filter->priority, 0,
+ UINT16_MAX, 0);
+ if (ntuple_filter->priority > FLOW_CLASSIFY_MAX_PRIORITY)
+ ret = -EINVAL;
+
+ return ret;
+}
+
+/* Bypass comment and empty lines */
+static inline int
+is_bypass_line(char *buff)
+{
+ int i = 0;
+
+ /* comment line */
+ if (buff[0] == COMMENT_LEAD_CHAR)
+ return 1;
+ /* empty line */
+ while (buff[i] != '\0') {
+ if (!isspace(buff[i]))
+ return 0;
+ i++;
+ }
+ return 1;
+}
+
+static uint32_t
+convert_depth_to_bitmask(uint32_t depth_val)
+{
+ uint32_t bitmask = 0;
+ int i, j;
+
+ for (i = depth_val, j = 0; i > 0; i--, j++)
+ bitmask |= (1 << (31 - j));
+ return bitmask;
+}
+
+static int
+add_classify_rule(struct rte_eth_ntuple_filter *ntuple_filter)
+{
+ int ret = 0;
+ struct rte_flow_error error;
+ struct rte_flow_item_ipv4 ipv4_spec;
+ struct rte_flow_item_ipv4 ipv4_mask;
+ struct rte_flow_item ipv4_udp_item;
+ struct rte_flow_item ipv4_tcp_item;
+ struct rte_flow_item ipv4_sctp_item;
+ struct rte_flow_item_udp udp_spec;
+ struct rte_flow_item_udp udp_mask;
+ struct rte_flow_item udp_item;
+ struct rte_flow_item_tcp tcp_spec;
+ struct rte_flow_item_tcp tcp_mask;
+ struct rte_flow_item tcp_item;
+ struct rte_flow_item_sctp sctp_spec;
+ struct rte_flow_item_sctp sctp_mask;
+ struct rte_flow_item sctp_item;
+ struct rte_flow_item pattern_ipv4_5tuple[4];
+ struct rte_flow_classify *flow_classify;
+ uint8_t ipv4_proto;
+
+ /* set up parameters for validate and create */
+ memset(&ipv4_spec, 0, sizeof(ipv4_spec));
+ ipv4_spec.hdr.next_proto_id = ntuple_filter->proto;
+ ipv4_spec.hdr.src_addr = ntuple_filter->src_ip;
+ ipv4_spec.hdr.dst_addr = ntuple_filter->dst_ip;
+ ipv4_proto = ipv4_spec.hdr.next_proto_id;
+
+ memset(&ipv4_mask, 0, sizeof(ipv4_mask));
+ ipv4_mask.hdr.next_proto_id = ntuple_filter->proto_mask;
+ ipv4_mask.hdr.src_addr = ntuple_filter->src_ip_mask;
+ ipv4_mask.hdr.src_addr =
+ convert_depth_to_bitmask(ipv4_mask.hdr.src_addr);
+ ipv4_mask.hdr.dst_addr = ntuple_filter->dst_ip_mask;
+ ipv4_mask.hdr.dst_addr =
+ convert_depth_to_bitmask(ipv4_mask.hdr.dst_addr);
+
+ switch (ipv4_proto) {
+ case PROTO_UDP:
+ if (udp_num_classify >= MAX_NUM_CLASSIFY) {
+ printf(
+ "\nINFO: UDP classify rule capacity %d reached\n",
+ udp_num_classify);
+ ret = -1;
+ break;
+ }
+ ipv4_udp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
+ ipv4_udp_item.spec = &ipv4_spec;
+ ipv4_udp_item.mask = &ipv4_mask;
+ ipv4_udp_item.last = NULL;
+
+ udp_spec.hdr.src_port = ntuple_filter->src_port;
+ udp_spec.hdr.dst_port = ntuple_filter->dst_port;
+ udp_spec.hdr.dgram_len = 0;
+ udp_spec.hdr.dgram_cksum = 0;
+
+ udp_mask.hdr.src_port = ntuple_filter->src_port_mask;
+ udp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
+ udp_mask.hdr.dgram_len = 0;
+ udp_mask.hdr.dgram_cksum = 0;
+
+ udp_item.type = RTE_FLOW_ITEM_TYPE_UDP;
+ udp_item.spec = &udp_spec;
+ udp_item.mask = &udp_mask;
+ udp_item.last = NULL;
+
+ attr.priority = ntuple_filter->priority;
+ pattern_ipv4_5tuple[1] = ipv4_udp_item;
+ pattern_ipv4_5tuple[2] = udp_item;
+ break;
+ case PROTO_TCP:
+ if (tcp_num_classify >= MAX_NUM_CLASSIFY) {
+ printf(
+ "\nINFO: TCP classify rule capacity %d reached\n",
+ tcp_num_classify);
+ ret = -1;
+ break;
+ }
+ ipv4_tcp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
+ ipv4_tcp_item.spec = &ipv4_spec;
+ ipv4_tcp_item.mask = &ipv4_mask;
+ ipv4_tcp_item.last = NULL;
+
+ memset(&tcp_spec, 0, sizeof(tcp_spec));
+ tcp_spec.hdr.src_port = ntuple_filter->src_port;
+ tcp_spec.hdr.dst_port = ntuple_filter->dst_port;
+
+ memset(&tcp_mask, 0, sizeof(tcp_mask));
+ tcp_mask.hdr.src_port = ntuple_filter->src_port_mask;
+ tcp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
+
+ tcp_item.type = RTE_FLOW_ITEM_TYPE_TCP;
+ tcp_item.spec = &tcp_spec;
+ tcp_item.mask = &tcp_mask;
+ tcp_item.last = NULL;
+
+ attr.priority = ntuple_filter->priority;
+ pattern_ipv4_5tuple[1] = ipv4_tcp_item;
+ pattern_ipv4_5tuple[2] = tcp_item;
+ break;
+ case PROTO_SCTP:
+ if (sctp_num_classify >= MAX_NUM_CLASSIFY) {
+ printf(
+ "\nINFO: SCTP classify rule capacity %d reached\n",
+ sctp_num_classify);
+ ret = -1;
+ break;
+ }
+ ipv4_sctp_item.type = RTE_FLOW_ITEM_TYPE_IPV4;
+ ipv4_sctp_item.spec = &ipv4_spec;
+ ipv4_sctp_item.mask = &ipv4_mask;
+ ipv4_sctp_item.last = NULL;
+
+ sctp_spec.hdr.src_port = ntuple_filter->src_port;
+ sctp_spec.hdr.dst_port = ntuple_filter->dst_port;
+ sctp_spec.hdr.cksum = 0;
+ sctp_spec.hdr.tag = 0;
+
+ sctp_mask.hdr.src_port = ntuple_filter->src_port_mask;
+ sctp_mask.hdr.dst_port = ntuple_filter->dst_port_mask;
+ sctp_mask.hdr.cksum = 0;
+ sctp_mask.hdr.tag = 0;
+
+ sctp_item.type = RTE_FLOW_ITEM_TYPE_SCTP;
+ sctp_item.spec = &sctp_spec;
+ sctp_item.mask = &sctp_mask;
+ sctp_item.last = NULL;
+
+ attr.priority = ntuple_filter->priority;
+ pattern_ipv4_5tuple[1] = ipv4_sctp_item;
+ pattern_ipv4_5tuple[2] = sctp_item;
+ break;
+ default:
+ break;
+ }
+
+ if (ret == -1)
+ return 0;
+
+ attr.ingress = 1;
+ pattern_ipv4_5tuple[0] = eth_item;
+ pattern_ipv4_5tuple[3] = end_item;
+ actions[0] = count_action;
+ actions[1] = end_action;
+
+ ret = rte_flow_classify_validate(table_acl, &attr, pattern_ipv4_5tuple,
+ actions, &error);
+ if (ret)
+ rte_exit(EXIT_FAILURE,
+ "flow classify validate failed ipv4_proto = %u\n",
+ ipv4_proto);
+
+ flow_classify = rte_flow_classify_create(
+ table_acl, entry_size, &attr, pattern_ipv4_5tuple,
+ actions, &error);
+ if (flow_classify == NULL)
+ rte_exit(EXIT_FAILURE,
+ "flow classify create failed ipv4_proto = %u\n",
+ ipv4_proto);
+
+ switch (ipv4_proto) {
+ case PROTO_UDP:
+ udp_flow_classify[udp_num_classify] = flow_classify;
+ udp_num_classify++;
+ break;
+ case PROTO_TCP:
+ tcp_flow_classify[tcp_num_classify] = flow_classify;
+ tcp_num_classify++;
+ break;
+ case PROTO_SCTP:
+ sctp_flow_classify[sctp_num_classify] = flow_classify;
+ sctp_num_classify++;
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int
+add_rules(const char *rule_path)
+{
+ FILE *fh;
+ char buff[LINE_MAX];
+ unsigned int i = 0;
+ unsigned int total_num = 0;
+ struct rte_eth_ntuple_filter ntuple_filter;
+
+ fh = fopen(rule_path, "rb");
+ if (fh == NULL)
+ rte_exit(EXIT_FAILURE, "%s: Open %s failed\n", __func__,
+ rule_path);
+
+ fseek(fh, 0, SEEK_SET);
+
+ i = 0;
+ while (fgets(buff, LINE_MAX, fh) != NULL) {
+ i++;
+
+ if (is_bypass_line(buff))
+ continue;
+
+ if (total_num >= FLOW_CLASSIFY_MAX_RULE_NUM - 1) {
+ printf("\nINFO: classify rule capacity %d reached\n",
+ total_num);
+ break;
+ }
+
+ if (parse_ipv4_5tuple_rule(buff, &ntuple_filter) != 0)
+ rte_exit(EXIT_FAILURE,
+ "%s Line %u: parse rules error\n",
+ rule_path, i);
+
+ if (add_classify_rule(&ntuple_filter) != 0)
+ rte_exit(EXIT_FAILURE, "add rule error\n");
+
+ total_num++;
+ }
+
+ fclose(fh);
+ return 0;
+}
+
+/* display usage */
+static void
+print_usage(const char *prgname)
+{
+ printf("%s [EAL options] -- --"OPTION_RULE_IPV4"=FILE: "
+ "specify the ipv4 rules entries file.\n"
+ "Each rule occupies one line in the file.\n",
+ prgname);
+}
+
+/* Parse the argument given in the command line of the application */
+static int
+parse_args(int argc, char **argv)
+{
+ int opt, ret;
+ char **argvopt;
+ int option_index;
+ char *prgname = argv[0];
+ static struct option lgopts[] = {
+ {OPTION_RULE_IPV4, 1, 0, 0},
+ {NULL, 0, 0, 0}
+ };
+
+ argvopt = argv;
+
+ while ((opt = getopt_long(argc, argvopt, "",
+ lgopts, &option_index)) != EOF) {
+
+ switch (opt) {
+ /* long options */
+ case 0:
+ if (!strncmp(lgopts[option_index].name,
+ OPTION_RULE_IPV4,
+ sizeof(OPTION_RULE_IPV4)))
+ parm_config.rule_ipv4_name = optarg;
+ break;
+ default:
+ print_usage(prgname);
+ return -1;
+ }
+ }
+
+ if (optind >= 0)
+ argv[optind-1] = prgname;
+
+ ret = optind-1;
+ optind = 1; /* reset getopt lib */
+ return ret;
+}
+
+/*
+ * The main function, which does initialization and calls the per-lcore
+ * functions.
+ */
+int
+main(int argc, char *argv[])
+{
+ struct rte_mempool *mbuf_pool;
+ uint8_t nb_ports;
+ uint8_t portid;
+ int ret;
+ int socket_id;
+ struct rte_table_acl_params table_acl_params;
+
+ /* Initialize the Environment Abstraction Layer (EAL). */
+ ret = rte_eal_init(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
+
+ argc -= ret;
+ argv += ret;
+
+ /* parse application arguments (after the EAL ones) */
+ ret = parse_args(argc, argv);
+ if (ret < 0)
+ rte_exit(EXIT_FAILURE, "Invalid flow_classify parameters\n");
+
+ /* Check that there is an even number of ports to send/receive on. */
+ nb_ports = rte_eth_dev_count();
+ if (nb_ports < 2 || (nb_ports & 1))
+ rte_exit(EXIT_FAILURE, "Error: number of ports must be even\n");
+
+ /* Creates a new mempool in memory to hold the mbufs. */
+ mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports,
+ MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
+
+ if (mbuf_pool == NULL)
+ rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
+
+ /* Initialize all ports. */
+ for (portid = 0; portid < nb_ports; portid++)
+ if (port_init(portid, mbuf_pool) != 0)
+ rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu8 "\n",
+ portid);
+
+ if (rte_lcore_count() > 1)
+ printf("\nWARNING: Too many lcores enabled. Only 1 used.\n");
+
+ socket_id = rte_eth_dev_socket_id(0);
+
+ /* initialise ACL table params */
+ table_acl_params.n_rule_fields = RTE_DIM(ipv4_defs);
+ table_acl_params.name = "table_acl_ipv4_5tuple";
+ table_acl_params.n_rules = FLOW_CLASSIFY_MAX_RULE_NUM;
+ memcpy(table_acl_params.field_format, ipv4_defs, sizeof(ipv4_defs));
+ entry_size = RTE_ACL_RULE_SZ(RTE_DIM(ipv4_defs));
+
+ table_acl = rte_table_acl_ops.f_create(&table_acl_params, socket_id,
+ entry_size);
+ if (table_acl == NULL)
+ rte_exit(EXIT_FAILURE, "Failed to create table_acl\n");
+
+ /* read file of IPv4 5 tuple rules and initialise parameters
+ * for rte_flow_classify_validate and rte_flow_classify_create
+ */
+
+ if (add_rules(parm_config.rule_ipv4_name))
+ rte_exit(EXIT_FAILURE, "Failed to add rules\n");
+
+ /* Call lcore_main on the master core only. */
+ lcore_main();
+
+ return 0;
+}
diff --git a/examples/flow_classify/ipv4_rules_file.txt b/examples/flow_classify/ipv4_rules_file.txt
new file mode 100644
index 0000000..262763d
--- /dev/null
+++ b/examples/flow_classify/ipv4_rules_file.txt
@@ -0,0 +1,14 @@
+#file format:
+#src_ip/masklen dstt_ip/masklen src_port : mask dst_port : mask proto/mask priority
+#
+2.2.2.3/24 2.2.2.7/24 32 : 0xffff 33 : 0xffff 17/0xff 0
+9.9.9.3/24 9.9.9.7/24 32 : 0xffff 33 : 0xffff 17/0xff 1
+9.9.9.3/24 9.9.9.7/24 32 : 0xffff 33 : 0xffff 6/0xff 2
+9.9.8.3/24 9.9.8.7/24 32 : 0xffff 33 : 0xffff 6/0xff 3
+6.7.8.9/24 2.3.4.5/24 32 : 0xffff 33 : 0xffff 132/0xff 4
+6.7.8.9/32 192.168.0.36/32 10 : 0xffff 11 : 0xffff 6/0xfe 5
+6.7.8.9/24 192.168.0.36/24 10 : 0xffff 11 : 0xffff 6/0xfe 6
+6.7.8.9/16 192.168.0.36/16 10 : 0xffff 11 : 0xffff 6/0xfe 7
+6.7.8.9/8 192.168.0.36/8 10 : 0xffff 11 : 0xffff 6/0xfe 8
+#error rules
+#9.8.7.6/8 192.168.0.36/8 10 : 0xffff 11 : 0xffff 6/0xfe 9
\ No newline at end of file
--
1.9.1
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