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numam-dpdk/examples/l3fwd-power/main.c
Anatoly Burakov 11159dd669 examples/l3fwd-power: select default mode automatically 
Currently, the application does support running without the power
library being initialized, but it has to be specifically requested. On
platforms without support for frequency scaling using the power library,
we can just enable interrupt-only mode by default.

Suggested-by: Jerin Jacob <jerinj@marvell.com>
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Tested-by: Harman Kalra <hkalra@marvell.com>
2020-07-11 13:32:37 +02:00

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2018 Intel Corporation
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>
#include <string.h>
#include <sys/queue.h>
#include <stdarg.h>
#include <errno.h>
#include <getopt.h>
#include <unistd.h>
#include <signal.h>
#include <math.h>
#include <rte_common.h>
#include <rte_byteorder.h>
#include <rte_log.h>
#include <rte_malloc.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_eal.h>
#include <rte_launch.h>
#include <rte_atomic.h>
#include <rte_cycles.h>
#include <rte_prefetch.h>
#include <rte_lcore.h>
#include <rte_per_lcore.h>
#include <rte_branch_prediction.h>
#include <rte_interrupts.h>
#include <rte_random.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_ip.h>
#include <rte_tcp.h>
#include <rte_udp.h>
#include <rte_string_fns.h>
#include <rte_timer.h>
#include <rte_power.h>
#include <rte_spinlock.h>
#include <rte_power_empty_poll.h>
#include <rte_metrics.h>
#include <rte_telemetry.h>
#include "perf_core.h"
#include "main.h"
#define RTE_LOGTYPE_L3FWD_POWER RTE_LOGTYPE_USER1
#define MAX_PKT_BURST 32
#define MIN_ZERO_POLL_COUNT 10
/* 100 ms interval */
#define TIMER_NUMBER_PER_SECOND 10
/* (10ms) */
#define INTERVALS_PER_SECOND 100
/* 100000 us */
#define SCALING_PERIOD (1000000/TIMER_NUMBER_PER_SECOND)
#define SCALING_DOWN_TIME_RATIO_THRESHOLD 0.25
#define APP_LOOKUP_EXACT_MATCH 0
#define APP_LOOKUP_LPM 1
#define DO_RFC_1812_CHECKS
#ifndef APP_LOOKUP_METHOD
#define APP_LOOKUP_METHOD APP_LOOKUP_LPM
#endif
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
#include <rte_hash.h>
#elif (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
#include <rte_lpm.h>
#else
#error "APP_LOOKUP_METHOD set to incorrect value"
#endif
#ifndef IPv6_BYTES
#define IPv6_BYTES_FMT "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"\
"%02x%02x:%02x%02x:%02x%02x:%02x%02x"
#define IPv6_BYTES(addr) \
addr[0], addr[1], addr[2], addr[3], \
addr[4], addr[5], addr[6], addr[7], \
addr[8], addr[9], addr[10], addr[11],\
addr[12], addr[13],addr[14], addr[15]
#endif
#define MAX_JUMBO_PKT_LEN 9600
#define IPV6_ADDR_LEN 16
#define MEMPOOL_CACHE_SIZE 256
/*
* This expression is used to calculate the number of mbufs needed depending on
* user input, taking into account memory for rx and tx hardware rings, cache
* per lcore and mtable per port per lcore. RTE_MAX is used to ensure that
* NB_MBUF never goes below a minimum value of 8192.
*/
#define NB_MBUF RTE_MAX ( \
(nb_ports*nb_rx_queue*nb_rxd + \
nb_ports*nb_lcores*MAX_PKT_BURST + \
nb_ports*n_tx_queue*nb_txd + \
nb_lcores*MEMPOOL_CACHE_SIZE), \
(unsigned)8192)
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
#define NB_SOCKETS 8
/* Configure how many packets ahead to prefetch, when reading packets */
#define PREFETCH_OFFSET 3
/*
* Configurable number of RX/TX ring descriptors
*/
#define RTE_TEST_RX_DESC_DEFAULT 1024
#define RTE_TEST_TX_DESC_DEFAULT 1024
/*
* These two thresholds were decided on by running the training algorithm on
* a 2.5GHz Xeon. These defaults can be overridden by supplying non-zero values
* for the med_threshold and high_threshold parameters on the command line.
*/
#define EMPTY_POLL_MED_THRESHOLD 350000UL
#define EMPTY_POLL_HGH_THRESHOLD 580000UL
#define NUM_TELSTATS RTE_DIM(telstats_strings)
static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
/* ethernet addresses of ports */
static struct rte_ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
/* ethernet addresses of ports */
static rte_spinlock_t locks[RTE_MAX_ETHPORTS];
/* mask of enabled ports */
static uint32_t enabled_port_mask = 0;
/* Ports set in promiscuous mode off by default. */
static int promiscuous_on = 0;
/* NUMA is enabled by default. */
static int numa_on = 1;
static bool empty_poll_stop;
static bool empty_poll_train;
volatile bool quit_signal;
static struct ep_params *ep_params;
static struct ep_policy policy;
static long ep_med_edpi, ep_hgh_edpi;
/* timer to update telemetry every 500ms */
static struct rte_timer telemetry_timer;
/* stats index returned by metrics lib */
int telstats_index;
struct telstats_name {
char name[RTE_ETH_XSTATS_NAME_SIZE];
};
/* telemetry stats to be reported */
const struct telstats_name telstats_strings[] = {
{"empty_poll"},
{"full_poll"},
{"busy_percent"}
};
/* core busyness in percentage */
enum busy_rate {
ZERO = 0,
PARTIAL = 50,
FULL = 100
};
/* reference poll count to measure core busyness */
#define DEFAULT_COUNT 10000
/*
* reference CYCLES to be used to
* measure core busyness based on poll count
*/
#define MIN_CYCLES 1500000ULL
#define MAX_CYCLES 22000000ULL
/* (500ms) */
#define TELEMETRY_INTERVALS_PER_SEC 2
static int parse_ptype; /**< Parse packet type using rx callback, and */
/**< disabled by default */
enum appmode {
APP_MODE_DEFAULT = 0,
APP_MODE_LEGACY,
APP_MODE_EMPTY_POLL,
APP_MODE_TELEMETRY,
APP_MODE_INTERRUPT
};
enum appmode app_mode;
enum freq_scale_hint_t
{
FREQ_LOWER = -1,
FREQ_CURRENT = 0,
FREQ_HIGHER = 1,
FREQ_HIGHEST = 2
};
struct lcore_rx_queue {
uint16_t port_id;
uint8_t queue_id;
enum freq_scale_hint_t freq_up_hint;
uint32_t zero_rx_packet_count;
uint32_t idle_hint;
} __rte_cache_aligned;
#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT RTE_MAX_ETHPORTS
#define MAX_RX_QUEUE_PER_PORT 128
#define MAX_RX_QUEUE_INTERRUPT_PER_PORT 16
struct lcore_params lcore_params_array[MAX_LCORE_PARAMS];
static struct lcore_params lcore_params_array_default[] = {
{0, 0, 2},
{0, 1, 2},
{0, 2, 2},
{1, 0, 2},
{1, 1, 2},
{1, 2, 2},
{2, 0, 2},
{3, 0, 3},
{3, 1, 3},
};
struct lcore_params *lcore_params = lcore_params_array_default;
uint16_t nb_lcore_params = RTE_DIM(lcore_params_array_default);
static struct rte_eth_conf port_conf = {
.rxmode = {
.mq_mode = ETH_MQ_RX_RSS,
.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
.split_hdr_size = 0,
.offloads = DEV_RX_OFFLOAD_CHECKSUM,
},
.rx_adv_conf = {
.rss_conf = {
.rss_key = NULL,
.rss_hf = ETH_RSS_UDP,
},
},
.txmode = {
.mq_mode = ETH_MQ_TX_NONE,
}
};
static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
#ifdef RTE_ARCH_X86
#include <rte_hash_crc.h>
#define DEFAULT_HASH_FUNC rte_hash_crc
#else
#include <rte_jhash.h>
#define DEFAULT_HASH_FUNC rte_jhash
#endif
struct ipv4_5tuple {
uint32_t ip_dst;
uint32_t ip_src;
uint16_t port_dst;
uint16_t port_src;
uint8_t proto;
} __rte_packed;
struct ipv6_5tuple {
uint8_t ip_dst[IPV6_ADDR_LEN];
uint8_t ip_src[IPV6_ADDR_LEN];
uint16_t port_dst;
uint16_t port_src;
uint8_t proto;
} __rte_packed;
struct ipv4_l3fwd_route {
struct ipv4_5tuple key;
uint8_t if_out;
};
struct ipv6_l3fwd_route {
struct ipv6_5tuple key;
uint8_t if_out;
};
static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
{{RTE_IPV4(100,10,0,1), RTE_IPV4(200,10,0,1), 101, 11, IPPROTO_TCP}, 0},
{{RTE_IPV4(100,20,0,2), RTE_IPV4(200,20,0,2), 102, 12, IPPROTO_TCP}, 1},
{{RTE_IPV4(100,30,0,3), RTE_IPV4(200,30,0,3), 103, 13, IPPROTO_TCP}, 2},
{{RTE_IPV4(100,40,0,4), RTE_IPV4(200,40,0,4), 104, 14, IPPROTO_TCP}, 3},
};
static struct ipv6_l3fwd_route ipv6_l3fwd_route_array[] = {
{
{
{0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x1b, 0x21, 0xff, 0xfe, 0x91, 0x38, 0x05},
{0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x1e, 0x67, 0xff, 0xfe, 0x0d, 0xb6, 0x0a},
1, 10, IPPROTO_UDP
}, 4
},
};
typedef struct rte_hash lookup_struct_t;
static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
static lookup_struct_t *ipv6_l3fwd_lookup_struct[NB_SOCKETS];
#define L3FWD_HASH_ENTRIES 1024
static uint16_t ipv4_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
static uint16_t ipv6_l3fwd_out_if[L3FWD_HASH_ENTRIES] __rte_cache_aligned;
#endif
#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
struct ipv4_l3fwd_route {
uint32_t ip;
uint8_t depth;
uint8_t if_out;
};
static struct ipv4_l3fwd_route ipv4_l3fwd_route_array[] = {
{RTE_IPV4(1,1,1,0), 24, 0},
{RTE_IPV4(2,1,1,0), 24, 1},
{RTE_IPV4(3,1,1,0), 24, 2},
{RTE_IPV4(4,1,1,0), 24, 3},
{RTE_IPV4(5,1,1,0), 24, 4},
{RTE_IPV4(6,1,1,0), 24, 5},
{RTE_IPV4(7,1,1,0), 24, 6},
{RTE_IPV4(8,1,1,0), 24, 7},
};
#define IPV4_L3FWD_LPM_MAX_RULES 1024
typedef struct rte_lpm lookup_struct_t;
static lookup_struct_t *ipv4_l3fwd_lookup_struct[NB_SOCKETS];
#endif
struct lcore_conf {
uint16_t n_rx_queue;
struct lcore_rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
uint16_t n_tx_port;
uint16_t tx_port_id[RTE_MAX_ETHPORTS];
uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
lookup_struct_t * ipv4_lookup_struct;
lookup_struct_t * ipv6_lookup_struct;
} __rte_cache_aligned;
struct lcore_stats {
/* total sleep time in ms since last frequency scaling down */
uint32_t sleep_time;
/* number of long sleep recently */
uint32_t nb_long_sleep;
/* freq. scaling up trend */
uint32_t trend;
/* total packet processed recently */
uint64_t nb_rx_processed;
/* total iterations looped recently */
uint64_t nb_iteration_looped;
/*
* Represents empty and non empty polls
* of rte_eth_rx_burst();
* ep_nep[0] holds non empty polls
* i.e. 0 < nb_rx <= MAX_BURST
* ep_nep[1] holds empty polls.
* i.e. nb_rx == 0
*/
uint64_t ep_nep[2];
/*
* Represents full and empty+partial
* polls of rte_eth_rx_burst();
* ep_nep[0] holds empty+partial polls.
* i.e. 0 <= nb_rx < MAX_BURST
* ep_nep[1] holds full polls
* i.e. nb_rx == MAX_BURST
*/
uint64_t fp_nfp[2];
enum busy_rate br;
rte_spinlock_t telemetry_lock;
} __rte_cache_aligned;
static struct lcore_conf lcore_conf[RTE_MAX_LCORE] __rte_cache_aligned;
static struct lcore_stats stats[RTE_MAX_LCORE] __rte_cache_aligned;
static struct rte_timer power_timers[RTE_MAX_LCORE];
static inline uint32_t power_idle_heuristic(uint32_t zero_rx_packet_count);
static inline enum freq_scale_hint_t power_freq_scaleup_heuristic( \
unsigned int lcore_id, uint16_t port_id, uint16_t queue_id);
/*
* These defaults are using the max frequency index (1), a medium index (9)
* and a typical low frequency index (14). These can be adjusted to use
* different indexes using the relevant command line parameters.
*/
static uint8_t freq_tlb[] = {14, 9, 1};
static int is_done(void)
{
return quit_signal;
}
/* exit signal handler */
static void
signal_exit_now(int sigtype)
{
if (sigtype == SIGINT)
quit_signal = true;
}
/* Freqency scale down timer callback */
static void
power_timer_cb(__rte_unused struct rte_timer *tim,
__rte_unused void *arg)
{
uint64_t hz;
float sleep_time_ratio;
unsigned lcore_id = rte_lcore_id();
/* accumulate total execution time in us when callback is invoked */
sleep_time_ratio = (float)(stats[lcore_id].sleep_time) /
(float)SCALING_PERIOD;
/**
* check whether need to scale down frequency a step if it sleep a lot.
*/
if (sleep_time_ratio >= SCALING_DOWN_TIME_RATIO_THRESHOLD) {
if (rte_power_freq_down)
rte_power_freq_down(lcore_id);
}
else if ( (unsigned)(stats[lcore_id].nb_rx_processed /
stats[lcore_id].nb_iteration_looped) < MAX_PKT_BURST) {
/**
* scale down a step if average packet per iteration less
* than expectation.
*/
if (rte_power_freq_down)
rte_power_freq_down(lcore_id);
}
/**
* initialize another timer according to current frequency to ensure
* timer interval is relatively fixed.
*/
hz = rte_get_timer_hz();
rte_timer_reset(&power_timers[lcore_id], hz/TIMER_NUMBER_PER_SECOND,
SINGLE, lcore_id, power_timer_cb, NULL);
stats[lcore_id].nb_rx_processed = 0;
stats[lcore_id].nb_iteration_looped = 0;
stats[lcore_id].sleep_time = 0;
}
/* Enqueue a single packet, and send burst if queue is filled */
static inline int
send_single_packet(struct rte_mbuf *m, uint16_t port)
{
uint32_t lcore_id;
struct lcore_conf *qconf;
lcore_id = rte_lcore_id();
qconf = &lcore_conf[lcore_id];
rte_eth_tx_buffer(port, qconf->tx_queue_id[port],
qconf->tx_buffer[port], m);
return 0;
}
#ifdef DO_RFC_1812_CHECKS
static inline int
is_valid_ipv4_pkt(struct rte_ipv4_hdr *pkt, uint32_t link_len)
{
/* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */
/*
* 1. The packet length reported by the Link Layer must be large
* enough to hold the minimum length legal IP datagram (20 bytes).
*/
if (link_len < sizeof(struct rte_ipv4_hdr))
return -1;
/* 2. The IP checksum must be correct. */
/* this is checked in H/W */
/*
* 3. The IP version number must be 4. If the version number is not 4
* then the packet may be another version of IP, such as IPng or
* ST-II.
*/
if (((pkt->version_ihl) >> 4) != 4)
return -3;
/*
* 4. The IP header length field must be large enough to hold the
* minimum length legal IP datagram (20 bytes = 5 words).
*/
if ((pkt->version_ihl & 0xf) < 5)
return -4;
/*
* 5. The IP total length field must be large enough to hold the IP
* datagram header, whose length is specified in the IP header length
* field.
*/
if (rte_cpu_to_be_16(pkt->total_length) < sizeof(struct rte_ipv4_hdr))
return -5;
return 0;
}
#endif
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
static void
print_ipv4_key(struct ipv4_5tuple key)
{
printf("IP dst = %08x, IP src = %08x, port dst = %d, port src = %d, "
"proto = %d\n", (unsigned)key.ip_dst, (unsigned)key.ip_src,
key.port_dst, key.port_src, key.proto);
}
static void
print_ipv6_key(struct ipv6_5tuple key)
{
printf( "IP dst = " IPv6_BYTES_FMT ", IP src = " IPv6_BYTES_FMT ", "
"port dst = %d, port src = %d, proto = %d\n",
IPv6_BYTES(key.ip_dst), IPv6_BYTES(key.ip_src),
key.port_dst, key.port_src, key.proto);
}
static inline uint16_t
get_ipv4_dst_port(struct rte_ipv4_hdr *ipv4_hdr, uint16_t portid,
lookup_struct_t * ipv4_l3fwd_lookup_struct)
{
struct ipv4_5tuple key;
struct rte_tcp_hdr *tcp;
struct rte_udp_hdr *udp;
int ret = 0;
key.ip_dst = rte_be_to_cpu_32(ipv4_hdr->dst_addr);
key.ip_src = rte_be_to_cpu_32(ipv4_hdr->src_addr);
key.proto = ipv4_hdr->next_proto_id;
switch (ipv4_hdr->next_proto_id) {
case IPPROTO_TCP:
tcp = (struct rte_tcp_hdr *)((unsigned char *)ipv4_hdr +
sizeof(struct rte_ipv4_hdr));
key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
key.port_src = rte_be_to_cpu_16(tcp->src_port);
break;
case IPPROTO_UDP:
udp = (struct rte_udp_hdr *)((unsigned char *)ipv4_hdr +
sizeof(struct rte_ipv4_hdr));
key.port_dst = rte_be_to_cpu_16(udp->dst_port);
key.port_src = rte_be_to_cpu_16(udp->src_port);
break;
default:
key.port_dst = 0;
key.port_src = 0;
break;
}
/* Find destination port */
ret = rte_hash_lookup(ipv4_l3fwd_lookup_struct, (const void *)&key);
return ((ret < 0) ? portid : ipv4_l3fwd_out_if[ret]);
}
static inline uint16_t
get_ipv6_dst_port(struct rte_ipv6_hdr *ipv6_hdr, uint16_t portid,
lookup_struct_t *ipv6_l3fwd_lookup_struct)
{
struct ipv6_5tuple key;
struct rte_tcp_hdr *tcp;
struct rte_udp_hdr *udp;
int ret = 0;
memcpy(key.ip_dst, ipv6_hdr->dst_addr, IPV6_ADDR_LEN);
memcpy(key.ip_src, ipv6_hdr->src_addr, IPV6_ADDR_LEN);
key.proto = ipv6_hdr->proto;
switch (ipv6_hdr->proto) {
case IPPROTO_TCP:
tcp = (struct rte_tcp_hdr *)((unsigned char *) ipv6_hdr +
sizeof(struct rte_ipv6_hdr));
key.port_dst = rte_be_to_cpu_16(tcp->dst_port);
key.port_src = rte_be_to_cpu_16(tcp->src_port);
break;
case IPPROTO_UDP:
udp = (struct rte_udp_hdr *)((unsigned char *) ipv6_hdr +
sizeof(struct rte_ipv6_hdr));
key.port_dst = rte_be_to_cpu_16(udp->dst_port);
key.port_src = rte_be_to_cpu_16(udp->src_port);
break;
default:
key.port_dst = 0;
key.port_src = 0;
break;
}
/* Find destination port */
ret = rte_hash_lookup(ipv6_l3fwd_lookup_struct, (const void *)&key);
return ((ret < 0) ? portid : ipv6_l3fwd_out_if[ret]);
}
#endif
#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
static inline uint16_t
get_ipv4_dst_port(struct rte_ipv4_hdr *ipv4_hdr, uint16_t portid,
lookup_struct_t *ipv4_l3fwd_lookup_struct)
{
uint32_t next_hop;
return ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct,
rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0)?
next_hop : portid);
}
#endif
static inline void
parse_ptype_one(struct rte_mbuf *m)
{
struct rte_ether_hdr *eth_hdr;
uint32_t packet_type = RTE_PTYPE_UNKNOWN;
uint16_t ether_type;
eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
ether_type = eth_hdr->ether_type;
if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4))
packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
else if (ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6))
packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
m->packet_type = packet_type;
}
static uint16_t
cb_parse_ptype(uint16_t port __rte_unused, uint16_t queue __rte_unused,
struct rte_mbuf *pkts[], uint16_t nb_pkts,
uint16_t max_pkts __rte_unused,
void *user_param __rte_unused)
{
unsigned int i;
for (i = 0; i < nb_pkts; ++i)
parse_ptype_one(pkts[i]);
return nb_pkts;
}
static int
add_cb_parse_ptype(uint16_t portid, uint16_t queueid)
{
printf("Port %d: softly parse packet type info\n", portid);
if (rte_eth_add_rx_callback(portid, queueid, cb_parse_ptype, NULL))
return 0;
printf("Failed to add rx callback: port=%d\n", portid);
return -1;
}
static inline void
l3fwd_simple_forward(struct rte_mbuf *m, uint16_t portid,
struct lcore_conf *qconf)
{
struct rte_ether_hdr *eth_hdr;
struct rte_ipv4_hdr *ipv4_hdr;
void *d_addr_bytes;
uint16_t dst_port;
eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
/* Handle IPv4 headers.*/
ipv4_hdr =
rte_pktmbuf_mtod_offset(m, struct rte_ipv4_hdr *,
sizeof(struct rte_ether_hdr));
#ifdef DO_RFC_1812_CHECKS
/* Check to make sure the packet is valid (RFC1812) */
if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
rte_pktmbuf_free(m);
return;
}
#endif
dst_port = get_ipv4_dst_port(ipv4_hdr, portid,
qconf->ipv4_lookup_struct);
if (dst_port >= RTE_MAX_ETHPORTS ||
(enabled_port_mask & 1 << dst_port) == 0)
dst_port = portid;
/* 02:00:00:00:00:xx */
d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
*((uint64_t *)d_addr_bytes) =
0x000000000002 + ((uint64_t)dst_port << 40);
#ifdef DO_RFC_1812_CHECKS
/* Update time to live and header checksum */
--(ipv4_hdr->time_to_live);
++(ipv4_hdr->hdr_checksum);
#endif
/* src addr */
rte_ether_addr_copy(&ports_eth_addr[dst_port],
&eth_hdr->s_addr);
send_single_packet(m, dst_port);
} else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
/* Handle IPv6 headers.*/
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
struct rte_ipv6_hdr *ipv6_hdr;
ipv6_hdr =
rte_pktmbuf_mtod_offset(m, struct rte_ipv6_hdr *,
sizeof(struct rte_ether_hdr));
dst_port = get_ipv6_dst_port(ipv6_hdr, portid,
qconf->ipv6_lookup_struct);
if (dst_port >= RTE_MAX_ETHPORTS ||
(enabled_port_mask & 1 << dst_port) == 0)
dst_port = portid;
/* 02:00:00:00:00:xx */
d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
*((uint64_t *)d_addr_bytes) =
0x000000000002 + ((uint64_t)dst_port << 40);
/* src addr */
rte_ether_addr_copy(&ports_eth_addr[dst_port],
&eth_hdr->s_addr);
send_single_packet(m, dst_port);
#else
/* We don't currently handle IPv6 packets in LPM mode. */
rte_pktmbuf_free(m);
#endif
} else
rte_pktmbuf_free(m);
}
#define MINIMUM_SLEEP_TIME 1
#define SUSPEND_THRESHOLD 300
static inline uint32_t
power_idle_heuristic(uint32_t zero_rx_packet_count)
{
/* If zero count is less than 100, sleep 1us */
if (zero_rx_packet_count < SUSPEND_THRESHOLD)
return MINIMUM_SLEEP_TIME;
/* If zero count is less than 1000, sleep 100 us which is the
minimum latency switching from C3/C6 to C0
*/
else
return SUSPEND_THRESHOLD;
}
static inline enum freq_scale_hint_t
power_freq_scaleup_heuristic(unsigned lcore_id,
uint16_t port_id,
uint16_t queue_id)
{
uint32_t rxq_count = rte_eth_rx_queue_count(port_id, queue_id);
/**
* HW Rx queue size is 128 by default, Rx burst read at maximum 32 entries
* per iteration
*/
#define FREQ_GEAR1_RX_PACKET_THRESHOLD MAX_PKT_BURST
#define FREQ_GEAR2_RX_PACKET_THRESHOLD (MAX_PKT_BURST*2)
#define FREQ_GEAR3_RX_PACKET_THRESHOLD (MAX_PKT_BURST*3)
#define FREQ_UP_TREND1_ACC 1
#define FREQ_UP_TREND2_ACC 100
#define FREQ_UP_THRESHOLD 10000
if (likely(rxq_count > FREQ_GEAR3_RX_PACKET_THRESHOLD)) {
stats[lcore_id].trend = 0;
return FREQ_HIGHEST;
} else if (likely(rxq_count > FREQ_GEAR2_RX_PACKET_THRESHOLD))
stats[lcore_id].trend += FREQ_UP_TREND2_ACC;
else if (likely(rxq_count > FREQ_GEAR1_RX_PACKET_THRESHOLD))
stats[lcore_id].trend += FREQ_UP_TREND1_ACC;
if (likely(stats[lcore_id].trend > FREQ_UP_THRESHOLD)) {
stats[lcore_id].trend = 0;
return FREQ_HIGHER;
}
return FREQ_CURRENT;
}
/**
* force polling thread sleep until one-shot rx interrupt triggers
* @param port_id
* Port id.
* @param queue_id
* Rx queue id.
* @return
* 0 on success
*/
static int
sleep_until_rx_interrupt(int num)
{
/*
* we want to track when we are woken up by traffic so that we can go
* back to sleep again without log spamming.
*/
static bool timeout;
struct rte_epoll_event event[num];
int n, i;
uint16_t port_id;
uint8_t queue_id;
void *data;
if (!timeout) {
RTE_LOG(INFO, L3FWD_POWER,
"lcore %u sleeps until interrupt triggers\n",
rte_lcore_id());
}
n = rte_epoll_wait(RTE_EPOLL_PER_THREAD, event, num, 10);
for (i = 0; i < n; i++) {
data = event[i].epdata.data;
port_id = ((uintptr_t)data) >> CHAR_BIT;
queue_id = ((uintptr_t)data) &
RTE_LEN2MASK(CHAR_BIT, uint8_t);
RTE_LOG(INFO, L3FWD_POWER,
"lcore %u is waked up from rx interrupt on"
" port %d queue %d\n",
rte_lcore_id(), port_id, queue_id);
}
timeout = n == 0;
return 0;
}
static void turn_on_off_intr(struct lcore_conf *qconf, bool on)
{
int i;
struct lcore_rx_queue *rx_queue;
uint8_t queue_id;
uint16_t port_id;
for (i = 0; i < qconf->n_rx_queue; ++i) {
rx_queue = &(qconf->rx_queue_list[i]);
port_id = rx_queue->port_id;
queue_id = rx_queue->queue_id;
rte_spinlock_lock(&(locks[port_id]));
if (on)
rte_eth_dev_rx_intr_enable(port_id, queue_id);
else
rte_eth_dev_rx_intr_disable(port_id, queue_id);
rte_spinlock_unlock(&(locks[port_id]));
}
}
static int event_register(struct lcore_conf *qconf)
{
struct lcore_rx_queue *rx_queue;
uint8_t queueid;
uint16_t portid;
uint32_t data;
int ret;
int i;
for (i = 0; i < qconf->n_rx_queue; ++i) {
rx_queue = &(qconf->rx_queue_list[i]);
portid = rx_queue->port_id;
queueid = rx_queue->queue_id;
data = portid << CHAR_BIT | queueid;
ret = rte_eth_dev_rx_intr_ctl_q(portid, queueid,
RTE_EPOLL_PER_THREAD,
RTE_INTR_EVENT_ADD,
(void *)((uintptr_t)data));
if (ret)
return ret;
}
return 0;
}
/* main processing loop */
static int main_intr_loop(__rte_unused void *dummy)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
unsigned int lcore_id;
uint64_t prev_tsc, diff_tsc, cur_tsc;
int i, j, nb_rx;
uint8_t queueid;
uint16_t portid;
struct lcore_conf *qconf;
struct lcore_rx_queue *rx_queue;
uint32_t lcore_rx_idle_count = 0;
uint32_t lcore_idle_hint = 0;
int intr_en = 0;
const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
US_PER_S * BURST_TX_DRAIN_US;
prev_tsc = 0;
lcore_id = rte_lcore_id();
qconf = &lcore_conf[lcore_id];
if (qconf->n_rx_queue == 0) {
RTE_LOG(INFO, L3FWD_POWER, "lcore %u has nothing to do\n",
lcore_id);
return 0;
}
RTE_LOG(INFO, L3FWD_POWER, "entering main interrupt loop on lcore %u\n",
lcore_id);
for (i = 0; i < qconf->n_rx_queue; i++) {
portid = qconf->rx_queue_list[i].port_id;
queueid = qconf->rx_queue_list[i].queue_id;
RTE_LOG(INFO, L3FWD_POWER,
" -- lcoreid=%u portid=%u rxqueueid=%hhu\n",
lcore_id, portid, queueid);
}
/* add into event wait list */
if (event_register(qconf) == 0)
intr_en = 1;
else
RTE_LOG(INFO, L3FWD_POWER, "RX interrupt won't enable.\n");
while (!is_done()) {
stats[lcore_id].nb_iteration_looped++;
cur_tsc = rte_rdtsc();
/*
* TX burst queue drain
*/
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
for (i = 0; i < qconf->n_tx_port; ++i) {
portid = qconf->tx_port_id[i];
rte_eth_tx_buffer_flush(portid,
qconf->tx_queue_id[portid],
qconf->tx_buffer[portid]);
}
prev_tsc = cur_tsc;
}
start_rx:
/*
* Read packet from RX queues
*/
lcore_rx_idle_count = 0;
for (i = 0; i < qconf->n_rx_queue; ++i) {
rx_queue = &(qconf->rx_queue_list[i]);
rx_queue->idle_hint = 0;
portid = rx_queue->port_id;
queueid = rx_queue->queue_id;
nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
MAX_PKT_BURST);
stats[lcore_id].nb_rx_processed += nb_rx;
if (unlikely(nb_rx == 0)) {
/**
* no packet received from rx queue, try to
* sleep for a while forcing CPU enter deeper
* C states.
*/
rx_queue->zero_rx_packet_count++;
if (rx_queue->zero_rx_packet_count <=
MIN_ZERO_POLL_COUNT)
continue;
rx_queue->idle_hint = power_idle_heuristic(
rx_queue->zero_rx_packet_count);
lcore_rx_idle_count++;
} else {
rx_queue->zero_rx_packet_count = 0;
}
/* Prefetch first packets */
for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
rte_prefetch0(rte_pktmbuf_mtod(
pkts_burst[j], void *));
}
/* Prefetch and forward already prefetched packets */
for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
rte_prefetch0(rte_pktmbuf_mtod(
pkts_burst[j + PREFETCH_OFFSET],
void *));
l3fwd_simple_forward(
pkts_burst[j], portid, qconf);
}
/* Forward remaining prefetched packets */
for (; j < nb_rx; j++) {
l3fwd_simple_forward(
pkts_burst[j], portid, qconf);
}
}
if (unlikely(lcore_rx_idle_count == qconf->n_rx_queue)) {
/**
* All Rx queues empty in recent consecutive polls,
* sleep in a conservative manner, meaning sleep as
* less as possible.
*/
for (i = 1,
lcore_idle_hint = qconf->rx_queue_list[0].idle_hint;
i < qconf->n_rx_queue; ++i) {
rx_queue = &(qconf->rx_queue_list[i]);
if (rx_queue->idle_hint < lcore_idle_hint)
lcore_idle_hint = rx_queue->idle_hint;
}
if (lcore_idle_hint < SUSPEND_THRESHOLD)
/**
* execute "pause" instruction to avoid context
* switch which generally take hundred of
* microseconds for short sleep.
*/
rte_delay_us(lcore_idle_hint);
else {
/* suspend until rx interrupt triggers */
if (intr_en) {
turn_on_off_intr(qconf, 1);
sleep_until_rx_interrupt(
qconf->n_rx_queue);
turn_on_off_intr(qconf, 0);
/**
* start receiving packets immediately
*/
if (likely(!is_done()))
goto start_rx;
}
}
stats[lcore_id].sleep_time += lcore_idle_hint;
}
}
return 0;
}
/* main processing loop */
static int
main_telemetry_loop(__rte_unused void *dummy)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
unsigned int lcore_id;
uint64_t prev_tsc, diff_tsc, cur_tsc, prev_tel_tsc;
int i, j, nb_rx;
uint8_t queueid;
uint16_t portid;
struct lcore_conf *qconf;
struct lcore_rx_queue *rx_queue;
uint64_t ep_nep[2] = {0}, fp_nfp[2] = {0};
uint64_t poll_count;
enum busy_rate br;
const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) /
US_PER_S * BURST_TX_DRAIN_US;
poll_count = 0;
prev_tsc = 0;
prev_tel_tsc = 0;
lcore_id = rte_lcore_id();
qconf = &lcore_conf[lcore_id];
if (qconf->n_rx_queue == 0) {
RTE_LOG(INFO, L3FWD_POWER, "lcore %u has nothing to do\n",
lcore_id);
return 0;
}
RTE_LOG(INFO, L3FWD_POWER, "entering main telemetry loop on lcore %u\n",
lcore_id);
for (i = 0; i < qconf->n_rx_queue; i++) {
portid = qconf->rx_queue_list[i].port_id;
queueid = qconf->rx_queue_list[i].queue_id;
RTE_LOG(INFO, L3FWD_POWER, " -- lcoreid=%u portid=%u "
"rxqueueid=%hhu\n", lcore_id, portid, queueid);
}
while (!is_done()) {
cur_tsc = rte_rdtsc();
/*
* TX burst queue drain
*/
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
for (i = 0; i < qconf->n_tx_port; ++i) {
portid = qconf->tx_port_id[i];
rte_eth_tx_buffer_flush(portid,
qconf->tx_queue_id[portid],
qconf->tx_buffer[portid]);
}
prev_tsc = cur_tsc;
}
/*
* Read packet from RX queues
*/
for (i = 0; i < qconf->n_rx_queue; ++i) {
rx_queue = &(qconf->rx_queue_list[i]);
portid = rx_queue->port_id;
queueid = rx_queue->queue_id;
nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
MAX_PKT_BURST);
ep_nep[nb_rx == 0]++;
fp_nfp[nb_rx == MAX_PKT_BURST]++;
poll_count++;
if (unlikely(nb_rx == 0))
continue;
/* Prefetch first packets */
for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
rte_prefetch0(rte_pktmbuf_mtod(
pkts_burst[j], void *));
}
/* Prefetch and forward already prefetched packets */
for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
j + PREFETCH_OFFSET], void *));
l3fwd_simple_forward(pkts_burst[j], portid,
qconf);
}
/* Forward remaining prefetched packets */
for (; j < nb_rx; j++) {
l3fwd_simple_forward(pkts_burst[j], portid,
qconf);
}
}
if (unlikely(poll_count >= DEFAULT_COUNT)) {
diff_tsc = cur_tsc - prev_tel_tsc;
if (diff_tsc >= MAX_CYCLES) {
br = FULL;
} else if (diff_tsc > MIN_CYCLES &&
diff_tsc < MAX_CYCLES) {
br = (diff_tsc * 100) / MAX_CYCLES;
} else {
br = ZERO;
}
poll_count = 0;
prev_tel_tsc = cur_tsc;
/* update stats for telemetry */
rte_spinlock_lock(&stats[lcore_id].telemetry_lock);
stats[lcore_id].ep_nep[0] = ep_nep[0];
stats[lcore_id].ep_nep[1] = ep_nep[1];
stats[lcore_id].fp_nfp[0] = fp_nfp[0];
stats[lcore_id].fp_nfp[1] = fp_nfp[1];
stats[lcore_id].br = br;
rte_spinlock_unlock(&stats[lcore_id].telemetry_lock);
}
}
return 0;
}
/* main processing loop */
static int
main_empty_poll_loop(__rte_unused void *dummy)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
unsigned int lcore_id;
uint64_t prev_tsc, diff_tsc, cur_tsc;
int i, j, nb_rx;
uint8_t queueid;
uint16_t portid;
struct lcore_conf *qconf;
struct lcore_rx_queue *rx_queue;
const uint64_t drain_tsc =
(rte_get_tsc_hz() + US_PER_S - 1) /
US_PER_S * BURST_TX_DRAIN_US;
prev_tsc = 0;
lcore_id = rte_lcore_id();
qconf = &lcore_conf[lcore_id];
if (qconf->n_rx_queue == 0) {
RTE_LOG(INFO, L3FWD_POWER, "lcore %u has nothing to do\n",
lcore_id);
return 0;
}
for (i = 0; i < qconf->n_rx_queue; i++) {
portid = qconf->rx_queue_list[i].port_id;
queueid = qconf->rx_queue_list[i].queue_id;
RTE_LOG(INFO, L3FWD_POWER, " -- lcoreid=%u portid=%u "
"rxqueueid=%hhu\n", lcore_id, portid, queueid);
}
while (!is_done()) {
stats[lcore_id].nb_iteration_looped++;
cur_tsc = rte_rdtsc();
/*
* TX burst queue drain
*/
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
for (i = 0; i < qconf->n_tx_port; ++i) {
portid = qconf->tx_port_id[i];
rte_eth_tx_buffer_flush(portid,
qconf->tx_queue_id[portid],
qconf->tx_buffer[portid]);
}
prev_tsc = cur_tsc;
}
/*
* Read packet from RX queues
*/
for (i = 0; i < qconf->n_rx_queue; ++i) {
rx_queue = &(qconf->rx_queue_list[i]);
rx_queue->idle_hint = 0;
portid = rx_queue->port_id;
queueid = rx_queue->queue_id;
nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
MAX_PKT_BURST);
stats[lcore_id].nb_rx_processed += nb_rx;
if (nb_rx == 0) {
rte_power_empty_poll_stat_update(lcore_id);
continue;
} else {
rte_power_poll_stat_update(lcore_id, nb_rx);
}
/* Prefetch first packets */
for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
rte_prefetch0(rte_pktmbuf_mtod(
pkts_burst[j], void *));
}
/* Prefetch and forward already prefetched packets */
for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
j + PREFETCH_OFFSET],
void *));
l3fwd_simple_forward(pkts_burst[j], portid,
qconf);
}
/* Forward remaining prefetched packets */
for (; j < nb_rx; j++) {
l3fwd_simple_forward(pkts_burst[j], portid,
qconf);
}
}
}
return 0;
}
/* main processing loop */
static int
main_legacy_loop(__rte_unused void *dummy)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
unsigned lcore_id;
uint64_t prev_tsc, diff_tsc, cur_tsc, tim_res_tsc, hz;
uint64_t prev_tsc_power = 0, cur_tsc_power, diff_tsc_power;
int i, j, nb_rx;
uint8_t queueid;
uint16_t portid;
struct lcore_conf *qconf;
struct lcore_rx_queue *rx_queue;
enum freq_scale_hint_t lcore_scaleup_hint;
uint32_t lcore_rx_idle_count = 0;
uint32_t lcore_idle_hint = 0;
int intr_en = 0;
const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
prev_tsc = 0;
hz = rte_get_timer_hz();
tim_res_tsc = hz/TIMER_NUMBER_PER_SECOND;
lcore_id = rte_lcore_id();
qconf = &lcore_conf[lcore_id];
if (qconf->n_rx_queue == 0) {
RTE_LOG(INFO, L3FWD_POWER, "lcore %u has nothing to do\n", lcore_id);
return 0;
}
RTE_LOG(INFO, L3FWD_POWER, "entering main loop on lcore %u\n", lcore_id);
for (i = 0; i < qconf->n_rx_queue; i++) {
portid = qconf->rx_queue_list[i].port_id;
queueid = qconf->rx_queue_list[i].queue_id;
RTE_LOG(INFO, L3FWD_POWER, " -- lcoreid=%u portid=%u "
"rxqueueid=%hhu\n", lcore_id, portid, queueid);
}
/* add into event wait list */
if (event_register(qconf) == 0)
intr_en = 1;
else
RTE_LOG(INFO, L3FWD_POWER, "RX interrupt won't enable.\n");
while (!is_done()) {
stats[lcore_id].nb_iteration_looped++;
cur_tsc = rte_rdtsc();
cur_tsc_power = cur_tsc;
/*
* TX burst queue drain
*/
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
for (i = 0; i < qconf->n_tx_port; ++i) {
portid = qconf->tx_port_id[i];
rte_eth_tx_buffer_flush(portid,
qconf->tx_queue_id[portid],
qconf->tx_buffer[portid]);
}
prev_tsc = cur_tsc;
}
diff_tsc_power = cur_tsc_power - prev_tsc_power;
if (diff_tsc_power > tim_res_tsc) {
rte_timer_manage();
prev_tsc_power = cur_tsc_power;
}
start_rx:
/*
* Read packet from RX queues
*/
lcore_scaleup_hint = FREQ_CURRENT;
lcore_rx_idle_count = 0;
for (i = 0; i < qconf->n_rx_queue; ++i) {
rx_queue = &(qconf->rx_queue_list[i]);
rx_queue->idle_hint = 0;
portid = rx_queue->port_id;
queueid = rx_queue->queue_id;
nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,
MAX_PKT_BURST);
stats[lcore_id].nb_rx_processed += nb_rx;
if (unlikely(nb_rx == 0)) {
/**
* no packet received from rx queue, try to
* sleep for a while forcing CPU enter deeper
* C states.
*/
rx_queue->zero_rx_packet_count++;
if (rx_queue->zero_rx_packet_count <=
MIN_ZERO_POLL_COUNT)
continue;
rx_queue->idle_hint = power_idle_heuristic(\
rx_queue->zero_rx_packet_count);
lcore_rx_idle_count++;
} else {
rx_queue->zero_rx_packet_count = 0;
/**
* do not scale up frequency immediately as
* user to kernel space communication is costly
* which might impact packet I/O for received
* packets.
*/
rx_queue->freq_up_hint =
power_freq_scaleup_heuristic(lcore_id,
portid, queueid);
}
/* Prefetch first packets */
for (j = 0; j < PREFETCH_OFFSET && j < nb_rx; j++) {
rte_prefetch0(rte_pktmbuf_mtod(
pkts_burst[j], void *));
}
/* Prefetch and forward already prefetched packets */
for (j = 0; j < (nb_rx - PREFETCH_OFFSET); j++) {
rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[
j + PREFETCH_OFFSET], void *));
l3fwd_simple_forward(pkts_burst[j], portid,
qconf);
}
/* Forward remaining prefetched packets */
for (; j < nb_rx; j++) {
l3fwd_simple_forward(pkts_burst[j], portid,
qconf);
}
}
if (likely(lcore_rx_idle_count != qconf->n_rx_queue)) {
for (i = 1, lcore_scaleup_hint =
qconf->rx_queue_list[0].freq_up_hint;
i < qconf->n_rx_queue; ++i) {
rx_queue = &(qconf->rx_queue_list[i]);
if (rx_queue->freq_up_hint >
lcore_scaleup_hint)
lcore_scaleup_hint =
rx_queue->freq_up_hint;
}
if (lcore_scaleup_hint == FREQ_HIGHEST) {
if (rte_power_freq_max)
rte_power_freq_max(lcore_id);
} else if (lcore_scaleup_hint == FREQ_HIGHER) {
if (rte_power_freq_up)
rte_power_freq_up(lcore_id);
}
} else {
/**
* All Rx queues empty in recent consecutive polls,
* sleep in a conservative manner, meaning sleep as
* less as possible.
*/
for (i = 1, lcore_idle_hint =
qconf->rx_queue_list[0].idle_hint;
i < qconf->n_rx_queue; ++i) {
rx_queue = &(qconf->rx_queue_list[i]);
if (rx_queue->idle_hint < lcore_idle_hint)
lcore_idle_hint = rx_queue->idle_hint;
}
if (lcore_idle_hint < SUSPEND_THRESHOLD)
/**
* execute "pause" instruction to avoid context
* switch which generally take hundred of
* microseconds for short sleep.
*/
rte_delay_us(lcore_idle_hint);
else {
/* suspend until rx interrupt triggers */
if (intr_en) {
turn_on_off_intr(qconf, 1);
sleep_until_rx_interrupt(
qconf->n_rx_queue);
turn_on_off_intr(qconf, 0);
/**
* start receiving packets immediately
*/
if (likely(!is_done()))
goto start_rx;
}
}
stats[lcore_id].sleep_time += lcore_idle_hint;
}
}
return 0;
}
static int
check_lcore_params(void)
{
uint8_t queue, lcore;
uint16_t i;
int socketid;
for (i = 0; i < nb_lcore_params; ++i) {
queue = lcore_params[i].queue_id;
if (queue >= MAX_RX_QUEUE_PER_PORT) {
printf("invalid queue number: %hhu\n", queue);
return -1;
}
lcore = lcore_params[i].lcore_id;
if (!rte_lcore_is_enabled(lcore)) {
printf("error: lcore %hhu is not enabled in lcore "
"mask\n", lcore);
return -1;
}
if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
(numa_on == 0)) {
printf("warning: lcore %hhu is on socket %d with numa "
"off\n", lcore, socketid);
}
if (app_mode == APP_MODE_TELEMETRY && lcore == rte_lcore_id()) {
printf("cannot enable master core %d in config for telemetry mode\n",
rte_lcore_id());
return -1;
}
}
return 0;
}
static int
check_port_config(void)
{
unsigned portid;
uint16_t i;
for (i = 0; i < nb_lcore_params; ++i) {
portid = lcore_params[i].port_id;
if ((enabled_port_mask & (1 << portid)) == 0) {
printf("port %u is not enabled in port mask\n",
portid);
return -1;
}
if (!rte_eth_dev_is_valid_port(portid)) {
printf("port %u is not present on the board\n",
portid);
return -1;
}
}
return 0;
}
static uint8_t
get_port_n_rx_queues(const uint16_t port)
{
int queue = -1;
uint16_t i;
for (i = 0; i < nb_lcore_params; ++i) {
if (lcore_params[i].port_id == port &&
lcore_params[i].queue_id > queue)
queue = lcore_params[i].queue_id;
}
return (uint8_t)(++queue);
}
static int
init_lcore_rx_queues(void)
{
uint16_t i, nb_rx_queue;
uint8_t lcore;
for (i = 0; i < nb_lcore_params; ++i) {
lcore = lcore_params[i].lcore_id;
nb_rx_queue = lcore_conf[lcore].n_rx_queue;
if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
printf("error: too many queues (%u) for lcore: %u\n",
(unsigned)nb_rx_queue + 1, (unsigned)lcore);
return -1;
} else {
lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
lcore_params[i].port_id;
lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
lcore_params[i].queue_id;
lcore_conf[lcore].n_rx_queue++;
}
}
return 0;
}
/* display usage */
static void
print_usage(const char *prgname)
{
printf ("%s [EAL options] -- -p PORTMASK -P"
" [--config (port,queue,lcore)[,(port,queue,lcore]]"
" [--high-perf-cores CORELIST"
" [--perf-config (port,queue,hi_perf,lcore_index)[,(port,queue,hi_perf,lcore_index]]"
" [--enable-jumbo [--max-pkt-len PKTLEN]]\n"
" -p PORTMASK: hexadecimal bitmask of ports to configure\n"
" -P : enable promiscuous mode\n"
" --config (port,queue,lcore): rx queues configuration\n"
" --high-perf-cores CORELIST: list of high performance cores\n"
" --perf-config: similar as config, cores specified as indices"
" for bins containing high or regular performance cores\n"
" --no-numa: optional, disable numa awareness\n"
" --enable-jumbo: enable jumbo frame"
" which max packet len is PKTLEN in decimal (64-9600)\n"
" --parse-ptype: parse packet type by software\n"
" --legacy: use legacy interrupt-based scaling\n"
" --empty-poll: enable empty poll detection"
" follow (training_flag, high_threshold, med_threshold)\n"
" --telemetry: enable telemetry mode, to update"
" empty polls, full polls, and core busyness to telemetry\n"
" --interrupt-only: enable interrupt-only mode\n",
prgname);
}
static int parse_max_pkt_len(const char *pktlen)
{
char *end = NULL;
unsigned long len;
/* parse decimal string */
len = strtoul(pktlen, &end, 10);
if ((pktlen[0] == '\0') || (end == NULL) || (*end != '\0'))
return -1;
if (len == 0)
return -1;
return len;
}
static int
parse_portmask(const char *portmask)
{
char *end = NULL;
unsigned long pm;
/* parse hexadecimal string */
pm = strtoul(portmask, &end, 16);
if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
return -1;
if (pm == 0)
return -1;
return pm;
}
static int
parse_config(const char *q_arg)
{
char s[256];
const char *p, *p0 = q_arg;
char *end;
enum fieldnames {
FLD_PORT = 0,
FLD_QUEUE,
FLD_LCORE,
_NUM_FLD
};
unsigned long int_fld[_NUM_FLD];
char *str_fld[_NUM_FLD];
int i;
unsigned size;
nb_lcore_params = 0;
while ((p = strchr(p0,'(')) != NULL) {
++p;
if((p0 = strchr(p,')')) == NULL)
return -1;
size = p0 - p;
if(size >= sizeof(s))
return -1;
snprintf(s, sizeof(s), "%.*s", size, p);
if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') !=
_NUM_FLD)
return -1;
for (i = 0; i < _NUM_FLD; i++){
errno = 0;
int_fld[i] = strtoul(str_fld[i], &end, 0);
if (errno != 0 || end == str_fld[i] || int_fld[i] >
255)
return -1;
}
if (nb_lcore_params >= MAX_LCORE_PARAMS) {
printf("exceeded max number of lcore params: %hu\n",
nb_lcore_params);
return -1;
}
lcore_params_array[nb_lcore_params].port_id =
(uint8_t)int_fld[FLD_PORT];
lcore_params_array[nb_lcore_params].queue_id =
(uint8_t)int_fld[FLD_QUEUE];
lcore_params_array[nb_lcore_params].lcore_id =
(uint8_t)int_fld[FLD_LCORE];
++nb_lcore_params;
}
lcore_params = lcore_params_array;
return 0;
}
static int
parse_ep_config(const char *q_arg)
{
char s[256];
const char *p = q_arg;
char *end;
int num_arg;
char *str_fld[3];
int training_flag;
int med_edpi;
int hgh_edpi;
ep_med_edpi = EMPTY_POLL_MED_THRESHOLD;
ep_hgh_edpi = EMPTY_POLL_MED_THRESHOLD;
strlcpy(s, p, sizeof(s));
num_arg = rte_strsplit(s, sizeof(s), str_fld, 3, ',');
empty_poll_train = false;
if (num_arg == 0)
return 0;
if (num_arg == 3) {
training_flag = strtoul(str_fld[0], &end, 0);
med_edpi = strtoul(str_fld[1], &end, 0);
hgh_edpi = strtoul(str_fld[2], &end, 0);
if (training_flag == 1)
empty_poll_train = true;
if (med_edpi > 0)
ep_med_edpi = med_edpi;
if (med_edpi > 0)
ep_hgh_edpi = hgh_edpi;
} else {
return -1;
}
return 0;
}
#define CMD_LINE_OPT_PARSE_PTYPE "parse-ptype"
#define CMD_LINE_OPT_LEGACY "legacy"
#define CMD_LINE_OPT_EMPTY_POLL "empty-poll"
#define CMD_LINE_OPT_INTERRUPT_ONLY "interrupt-only"
#define CMD_LINE_OPT_TELEMETRY "telemetry"
/* 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;
uint32_t limit;
char *prgname = argv[0];
static struct option lgopts[] = {
{"config", 1, 0, 0},
{"perf-config", 1, 0, 0},
{"high-perf-cores", 1, 0, 0},
{"no-numa", 0, 0, 0},
{"enable-jumbo", 0, 0, 0},
{CMD_LINE_OPT_EMPTY_POLL, 1, 0, 0},
{CMD_LINE_OPT_PARSE_PTYPE, 0, 0, 0},
{CMD_LINE_OPT_LEGACY, 0, 0, 0},
{CMD_LINE_OPT_TELEMETRY, 0, 0, 0},
{CMD_LINE_OPT_INTERRUPT_ONLY, 0, 0, 0},
{NULL, 0, 0, 0}
};
argvopt = argv;
while ((opt = getopt_long(argc, argvopt, "p:l:m:h:P",
lgopts, &option_index)) != EOF) {
switch (opt) {
/* portmask */
case 'p':
enabled_port_mask = parse_portmask(optarg);
if (enabled_port_mask == 0) {
printf("invalid portmask\n");
print_usage(prgname);
return -1;
}
break;
case 'P':
printf("Promiscuous mode selected\n");
promiscuous_on = 1;
break;
case 'l':
limit = parse_max_pkt_len(optarg);
freq_tlb[LOW] = limit;
break;
case 'm':
limit = parse_max_pkt_len(optarg);
freq_tlb[MED] = limit;
break;
case 'h':
limit = parse_max_pkt_len(optarg);
freq_tlb[HGH] = limit;
break;
/* long options */
case 0:
if (!strncmp(lgopts[option_index].name, "config", 6)) {
ret = parse_config(optarg);
if (ret) {
printf("invalid config\n");
print_usage(prgname);
return -1;
}
}
if (!strncmp(lgopts[option_index].name,
"perf-config", 11)) {
ret = parse_perf_config(optarg);
if (ret) {
printf("invalid perf-config\n");
print_usage(prgname);
return -1;
}
}
if (!strncmp(lgopts[option_index].name,
"high-perf-cores", 15)) {
ret = parse_perf_core_list(optarg);
if (ret) {
printf("invalid high-perf-cores\n");
print_usage(prgname);
return -1;
}
}
if (!strncmp(lgopts[option_index].name,
"no-numa", 7)) {
printf("numa is disabled \n");
numa_on = 0;
}
if (!strncmp(lgopts[option_index].name,
CMD_LINE_OPT_LEGACY,
sizeof(CMD_LINE_OPT_LEGACY))) {
if (app_mode != APP_MODE_DEFAULT) {
printf(" legacy mode is mutually exclusive with other modes\n");
return -1;
}
app_mode = APP_MODE_LEGACY;
printf("legacy mode is enabled\n");
}
if (!strncmp(lgopts[option_index].name,
CMD_LINE_OPT_EMPTY_POLL, 10)) {
if (app_mode != APP_MODE_DEFAULT) {
printf(" empty-poll mode is mutually exclusive with other modes\n");
return -1;
}
app_mode = APP_MODE_EMPTY_POLL;
ret = parse_ep_config(optarg);
if (ret) {
printf("invalid empty poll config\n");
print_usage(prgname);
return -1;
}
printf("empty-poll is enabled\n");
}
if (!strncmp(lgopts[option_index].name,
CMD_LINE_OPT_TELEMETRY,
sizeof(CMD_LINE_OPT_TELEMETRY))) {
if (app_mode != APP_MODE_DEFAULT) {
printf(" telemetry mode is mutually exclusive with other modes\n");
return -1;
}
app_mode = APP_MODE_TELEMETRY;
printf("telemetry mode is enabled\n");
}
if (!strncmp(lgopts[option_index].name,
CMD_LINE_OPT_INTERRUPT_ONLY,
sizeof(CMD_LINE_OPT_INTERRUPT_ONLY))) {
if (app_mode != APP_MODE_DEFAULT) {
printf(" interrupt-only mode is mutually exclusive with other modes\n");
return -1;
}
app_mode = APP_MODE_INTERRUPT;
printf("interrupt-only mode is enabled\n");
}
if (!strncmp(lgopts[option_index].name,
"enable-jumbo", 12)) {
struct option lenopts =
{"max-pkt-len", required_argument, \
0, 0};
printf("jumbo frame is enabled \n");
port_conf.rxmode.offloads |=
DEV_RX_OFFLOAD_JUMBO_FRAME;
port_conf.txmode.offloads |=
DEV_TX_OFFLOAD_MULTI_SEGS;
/**
* if no max-pkt-len set, use the default value
* RTE_ETHER_MAX_LEN
*/
if (0 == getopt_long(argc, argvopt, "",
&lenopts, &option_index)) {
ret = parse_max_pkt_len(optarg);
if ((ret < 64) ||
(ret > MAX_JUMBO_PKT_LEN)){
printf("invalid packet "
"length\n");
print_usage(prgname);
return -1;
}
port_conf.rxmode.max_rx_pkt_len = ret;
}
printf("set jumbo frame "
"max packet length to %u\n",
(unsigned int)port_conf.rxmode.max_rx_pkt_len);
}
if (!strncmp(lgopts[option_index].name,
CMD_LINE_OPT_PARSE_PTYPE,
sizeof(CMD_LINE_OPT_PARSE_PTYPE))) {
printf("soft parse-ptype is enabled\n");
parse_ptype = 1;
}
break;
default:
print_usage(prgname);
return -1;
}
}
if (optind >= 0)
argv[optind-1] = prgname;
ret = optind-1;
optind = 1; /* reset getopt lib */
return ret;
}
static void
print_ethaddr(const char *name, const struct rte_ether_addr *eth_addr)
{
char buf[RTE_ETHER_ADDR_FMT_SIZE];
rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, eth_addr);
printf("%s%s", name, buf);
}
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
static void
setup_hash(int socketid)
{
struct rte_hash_parameters ipv4_l3fwd_hash_params = {
.name = NULL,
.entries = L3FWD_HASH_ENTRIES,
.key_len = sizeof(struct ipv4_5tuple),
.hash_func = DEFAULT_HASH_FUNC,
.hash_func_init_val = 0,
};
struct rte_hash_parameters ipv6_l3fwd_hash_params = {
.name = NULL,
.entries = L3FWD_HASH_ENTRIES,
.key_len = sizeof(struct ipv6_5tuple),
.hash_func = DEFAULT_HASH_FUNC,
.hash_func_init_val = 0,
};
unsigned i;
int ret;
char s[64];
/* create ipv4 hash */
snprintf(s, sizeof(s), "ipv4_l3fwd_hash_%d", socketid);
ipv4_l3fwd_hash_params.name = s;
ipv4_l3fwd_hash_params.socket_id = socketid;
ipv4_l3fwd_lookup_struct[socketid] =
rte_hash_create(&ipv4_l3fwd_hash_params);
if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
"socket %d\n", socketid);
/* create ipv6 hash */
snprintf(s, sizeof(s), "ipv6_l3fwd_hash_%d", socketid);
ipv6_l3fwd_hash_params.name = s;
ipv6_l3fwd_hash_params.socket_id = socketid;
ipv6_l3fwd_lookup_struct[socketid] =
rte_hash_create(&ipv6_l3fwd_hash_params);
if (ipv6_l3fwd_lookup_struct[socketid] == NULL)
rte_exit(EXIT_FAILURE, "Unable to create the l3fwd hash on "
"socket %d\n", socketid);
/* populate the ipv4 hash */
for (i = 0; i < RTE_DIM(ipv4_l3fwd_route_array); i++) {
ret = rte_hash_add_key (ipv4_l3fwd_lookup_struct[socketid],
(void *) &ipv4_l3fwd_route_array[i].key);
if (ret < 0) {
rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
"l3fwd hash on socket %d\n", i, socketid);
}
ipv4_l3fwd_out_if[ret] = ipv4_l3fwd_route_array[i].if_out;
printf("Hash: Adding key\n");
print_ipv4_key(ipv4_l3fwd_route_array[i].key);
}
/* populate the ipv6 hash */
for (i = 0; i < RTE_DIM(ipv6_l3fwd_route_array); i++) {
ret = rte_hash_add_key (ipv6_l3fwd_lookup_struct[socketid],
(void *) &ipv6_l3fwd_route_array[i].key);
if (ret < 0) {
rte_exit(EXIT_FAILURE, "Unable to add entry %u to the"
"l3fwd hash on socket %d\n", i, socketid);
}
ipv6_l3fwd_out_if[ret] = ipv6_l3fwd_route_array[i].if_out;
printf("Hash: Adding key\n");
print_ipv6_key(ipv6_l3fwd_route_array[i].key);
}
}
#endif
#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
static void
setup_lpm(int socketid)
{
unsigned i;
int ret;
char s[64];
/* create the LPM table */
struct rte_lpm_config lpm_ipv4_config;
lpm_ipv4_config.max_rules = IPV4_L3FWD_LPM_MAX_RULES;
lpm_ipv4_config.number_tbl8s = 256;
lpm_ipv4_config.flags = 0;
snprintf(s, sizeof(s), "IPV4_L3FWD_LPM_%d", socketid);
ipv4_l3fwd_lookup_struct[socketid] =
rte_lpm_create(s, socketid, &lpm_ipv4_config);
if (ipv4_l3fwd_lookup_struct[socketid] == NULL)
rte_exit(EXIT_FAILURE, "Unable to create the l3fwd LPM table"
" on socket %d\n", socketid);
/* populate the LPM table */
for (i = 0; i < RTE_DIM(ipv4_l3fwd_route_array); i++) {
ret = rte_lpm_add(ipv4_l3fwd_lookup_struct[socketid],
ipv4_l3fwd_route_array[i].ip,
ipv4_l3fwd_route_array[i].depth,
ipv4_l3fwd_route_array[i].if_out);
if (ret < 0) {
rte_exit(EXIT_FAILURE, "Unable to add entry %u to the "
"l3fwd LPM table on socket %d\n",
i, socketid);
}
printf("LPM: Adding route 0x%08x / %d (%d)\n",
(unsigned)ipv4_l3fwd_route_array[i].ip,
ipv4_l3fwd_route_array[i].depth,
ipv4_l3fwd_route_array[i].if_out);
}
}
#endif
static int
init_mem(unsigned nb_mbuf)
{
struct lcore_conf *qconf;
int socketid;
unsigned lcore_id;
char s[64];
for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
if (rte_lcore_is_enabled(lcore_id) == 0)
continue;
if (numa_on)
socketid = rte_lcore_to_socket_id(lcore_id);
else
socketid = 0;
if (socketid >= NB_SOCKETS) {
rte_exit(EXIT_FAILURE, "Socket %d of lcore %u is "
"out of range %d\n", socketid,
lcore_id, NB_SOCKETS);
}
if (pktmbuf_pool[socketid] == NULL) {
snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
pktmbuf_pool[socketid] =
rte_pktmbuf_pool_create(s, nb_mbuf,
MEMPOOL_CACHE_SIZE, 0,
RTE_MBUF_DEFAULT_BUF_SIZE,
socketid);
if (pktmbuf_pool[socketid] == NULL)
rte_exit(EXIT_FAILURE,
"Cannot init mbuf pool on socket %d\n",
socketid);
else
printf("Allocated mbuf pool on socket %d\n",
socketid);
#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
setup_lpm(socketid);
#else
setup_hash(socketid);
#endif
}
qconf = &lcore_conf[lcore_id];
qconf->ipv4_lookup_struct = ipv4_l3fwd_lookup_struct[socketid];
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
qconf->ipv6_lookup_struct = ipv6_l3fwd_lookup_struct[socketid];
#endif
}
return 0;
}
/* Check the link status of all ports in up to 9s, and print them finally */
static void
check_all_ports_link_status(uint32_t port_mask)
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
uint8_t count, all_ports_up, print_flag = 0;
uint16_t portid;
struct rte_eth_link link;
int ret;
printf("\nChecking link status");
fflush(stdout);
for (count = 0; count <= MAX_CHECK_TIME; count++) {
all_ports_up = 1;
RTE_ETH_FOREACH_DEV(portid) {
if ((port_mask & (1 << portid)) == 0)
continue;
memset(&link, 0, sizeof(link));
ret = rte_eth_link_get_nowait(portid, &link);
if (ret < 0) {
all_ports_up = 0;
if (print_flag == 1)
printf("Port %u link get failed: %s\n",
portid, rte_strerror(-ret));
continue;
}
/* print link status if flag set */
if (print_flag == 1) {
if (link.link_status)
printf("Port %d Link Up - speed %u "
"Mbps - %s\n", (uint8_t)portid,
(unsigned)link.link_speed,
(link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
("full-duplex") : ("half-duplex"));
else
printf("Port %d Link Down\n",
(uint8_t)portid);
continue;
}
/* clear all_ports_up flag if any link down */
if (link.link_status == ETH_LINK_DOWN) {
all_ports_up = 0;
break;
}
}
/* after finally printing all link status, get out */
if (print_flag == 1)
break;
if (all_ports_up == 0) {
printf(".");
fflush(stdout);
rte_delay_ms(CHECK_INTERVAL);
}
/* set the print_flag if all ports up or timeout */
if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
print_flag = 1;
printf("done\n");
}
}
}
static int check_ptype(uint16_t portid)
{
int i, ret;
int ptype_l3_ipv4 = 0;
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
int ptype_l3_ipv6 = 0;
#endif
uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
if (ret <= 0)
return 0;
uint32_t ptypes[ret];
ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes, ret);
for (i = 0; i < ret; ++i) {
if (ptypes[i] & RTE_PTYPE_L3_IPV4)
ptype_l3_ipv4 = 1;
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
if (ptypes[i] & RTE_PTYPE_L3_IPV6)
ptype_l3_ipv6 = 1;
#endif
}
if (ptype_l3_ipv4 == 0)
printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
#if (APP_LOOKUP_METHOD == APP_LOOKUP_EXACT_MATCH)
if (ptype_l3_ipv6 == 0)
printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
#endif
#if (APP_LOOKUP_METHOD == APP_LOOKUP_LPM)
if (ptype_l3_ipv4)
#else /* APP_LOOKUP_EXACT_MATCH */
if (ptype_l3_ipv4 && ptype_l3_ipv6)
#endif
return 1;
return 0;
}
static int
init_power_library(void)
{
enum power_management_env env;
unsigned int lcore_id;
int ret = 0;
RTE_LCORE_FOREACH(lcore_id) {
/* init power management library */
ret = rte_power_init(lcore_id);
if (ret) {
RTE_LOG(ERR, POWER,
"Library initialization failed on core %u\n",
lcore_id);
return ret;
}
/* we're not supporting the VM channel mode */
env = rte_power_get_env();
if (env != PM_ENV_ACPI_CPUFREQ &&
env != PM_ENV_PSTATE_CPUFREQ) {
RTE_LOG(ERR, POWER,
"Only ACPI and PSTATE mode are supported\n");
return -1;
}
}
return ret;
}
static int
deinit_power_library(void)
{
unsigned int lcore_id;
int ret = 0;
RTE_LCORE_FOREACH(lcore_id) {
/* deinit power management library */
ret = rte_power_exit(lcore_id);
if (ret) {
RTE_LOG(ERR, POWER,
"Library deinitialization failed on core %u\n",
lcore_id);
return ret;
}
}
return ret;
}
static void
get_current_stat_values(uint64_t *values)
{
unsigned int lcore_id = rte_lcore_id();
struct lcore_conf *qconf;
uint64_t app_eps = 0, app_fps = 0, app_br = 0;
uint64_t count = 0;
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
qconf = &lcore_conf[lcore_id];
if (qconf->n_rx_queue == 0)
continue;
count++;
rte_spinlock_lock(&stats[lcore_id].telemetry_lock);
app_eps += stats[lcore_id].ep_nep[1];
app_fps += stats[lcore_id].fp_nfp[1];
app_br += stats[lcore_id].br;
rte_spinlock_unlock(&stats[lcore_id].telemetry_lock);
}
if (count > 0) {
values[0] = app_eps/count;
values[1] = app_fps/count;
values[2] = app_br/count;
} else
memset(values, 0, sizeof(uint64_t) * NUM_TELSTATS);
}
static void
update_telemetry(__rte_unused struct rte_timer *tim,
__rte_unused void *arg)
{
int ret;
uint64_t values[NUM_TELSTATS] = {0};
get_current_stat_values(values);
ret = rte_metrics_update_values(RTE_METRICS_GLOBAL, telstats_index,
values, RTE_DIM(values));
if (ret < 0)
RTE_LOG(WARNING, POWER, "failed to update metrcis\n");
}
static int
handle_app_stats(const char *cmd __rte_unused,
const char *params __rte_unused,
struct rte_tel_data *d)
{
uint64_t values[NUM_TELSTATS] = {0};
uint32_t i;
rte_tel_data_start_dict(d);
get_current_stat_values(values);
for (i = 0; i < NUM_TELSTATS; i++)
rte_tel_data_add_dict_u64(d, telstats_strings[i].name,
values[i]);
return 0;
}
static void
telemetry_setup_timer(void)
{
int lcore_id = rte_lcore_id();
uint64_t hz = rte_get_timer_hz();
uint64_t ticks;
ticks = hz / TELEMETRY_INTERVALS_PER_SEC;
rte_timer_reset_sync(&telemetry_timer,
ticks,
PERIODICAL,
lcore_id,
update_telemetry,
NULL);
}
static void
empty_poll_setup_timer(void)
{
int lcore_id = rte_lcore_id();
uint64_t hz = rte_get_timer_hz();
struct ep_params *ep_ptr = ep_params;
ep_ptr->interval_ticks = hz / INTERVALS_PER_SECOND;
rte_timer_reset_sync(&ep_ptr->timer0,
ep_ptr->interval_ticks,
PERIODICAL,
lcore_id,
rte_empty_poll_detection,
(void *)ep_ptr);
}
static int
launch_timer(unsigned int lcore_id)
{
int64_t prev_tsc = 0, cur_tsc, diff_tsc, cycles_10ms;
RTE_SET_USED(lcore_id);
if (rte_get_master_lcore() != lcore_id) {
rte_panic("timer on lcore:%d which is not master core:%d\n",
lcore_id,
rte_get_master_lcore());
}
RTE_LOG(INFO, POWER, "Bring up the Timer\n");
if (app_mode == APP_MODE_EMPTY_POLL)
empty_poll_setup_timer();
else
telemetry_setup_timer();
cycles_10ms = rte_get_timer_hz() / 100;
while (!is_done()) {
cur_tsc = rte_rdtsc();
diff_tsc = cur_tsc - prev_tsc;
if (diff_tsc > cycles_10ms) {
rte_timer_manage();
prev_tsc = cur_tsc;
cycles_10ms = rte_get_timer_hz() / 100;
}
}
RTE_LOG(INFO, POWER, "Timer_subsystem is done\n");
return 0;
}
static int
autodetect_mode(void)
{
RTE_LOG(NOTICE, L3FWD_POWER, "Operating mode not specified, probing frequency scaling support...\n");
/*
* Empty poll and telemetry modes have to be specifically requested to
* be enabled, but we can auto-detect between interrupt mode with or
* without frequency scaling. Both ACPI and pstate can be used.
*/
if (rte_power_check_env_supported(PM_ENV_ACPI_CPUFREQ))
return APP_MODE_LEGACY;
if (rte_power_check_env_supported(PM_ENV_PSTATE_CPUFREQ))
return APP_MODE_LEGACY;
RTE_LOG(NOTICE, L3FWD_POWER, "Frequency scaling not supported, selecting interrupt-only mode\n");
return APP_MODE_INTERRUPT;
}
static const char *
mode_to_str(enum appmode mode)
{
switch (mode) {
case APP_MODE_LEGACY:
return "legacy";
case APP_MODE_EMPTY_POLL:
return "empty poll";
case APP_MODE_TELEMETRY:
return "telemetry";
case APP_MODE_INTERRUPT:
return "interrupt-only";
default:
return "invalid";
}
}
int
main(int argc, char **argv)
{
struct lcore_conf *qconf;
struct rte_eth_dev_info dev_info;
struct rte_eth_txconf *txconf;
int ret;
uint16_t nb_ports;
uint16_t queueid;
unsigned lcore_id;
uint64_t hz;
uint32_t n_tx_queue, nb_lcores;
uint32_t dev_rxq_num, dev_txq_num;
uint8_t nb_rx_queue, queue, socketid;
uint16_t portid;
const char *ptr_strings[NUM_TELSTATS];
/* catch SIGINT and restore cpufreq governor to ondemand */
signal(SIGINT, signal_exit_now);
/* init EAL */
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
argc -= ret;
argv += ret;
/* init RTE timer library to be used late */
rte_timer_subsystem_init();
/* parse application arguments (after the EAL ones) */
ret = parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid L3FWD parameters\n");
if (app_mode == APP_MODE_DEFAULT)
app_mode = autodetect_mode();
RTE_LOG(INFO, L3FWD_POWER, "Selected operation mode: %s\n",
mode_to_str(app_mode));
/* only legacy and empty poll mode rely on power library */
if ((app_mode == APP_MODE_LEGACY || app_mode == APP_MODE_EMPTY_POLL) &&
init_power_library())
rte_exit(EXIT_FAILURE, "init_power_library failed\n");
if (update_lcore_params() < 0)
rte_exit(EXIT_FAILURE, "update_lcore_params failed\n");
if (check_lcore_params() < 0)
rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");
ret = init_lcore_rx_queues();
if (ret < 0)
rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");
nb_ports = rte_eth_dev_count_avail();
if (check_port_config() < 0)
rte_exit(EXIT_FAILURE, "check_port_config failed\n");
nb_lcores = rte_lcore_count();
/* initialize all ports */
RTE_ETH_FOREACH_DEV(portid) {
struct rte_eth_conf local_port_conf = port_conf;
/* not all app modes need interrupts */
bool need_intr = app_mode == APP_MODE_LEGACY ||
app_mode == APP_MODE_INTERRUPT;
/* skip ports that are not enabled */
if ((enabled_port_mask & (1 << portid)) == 0) {
printf("\nSkipping disabled port %d\n", portid);
continue;
}
/* init port */
printf("Initializing port %d ... ", portid );
fflush(stdout);
ret = rte_eth_dev_info_get(portid, &dev_info);
if (ret != 0)
rte_exit(EXIT_FAILURE,
"Error during getting device (port %u) info: %s\n",
portid, strerror(-ret));
dev_rxq_num = dev_info.max_rx_queues;
dev_txq_num = dev_info.max_tx_queues;
nb_rx_queue = get_port_n_rx_queues(portid);
if (nb_rx_queue > dev_rxq_num)
rte_exit(EXIT_FAILURE,
"Cannot configure not existed rxq: "
"port=%d\n", portid);
n_tx_queue = nb_lcores;
if (n_tx_queue > dev_txq_num)
n_tx_queue = dev_txq_num;
printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
nb_rx_queue, (unsigned)n_tx_queue );
/* If number of Rx queue is 0, no need to enable Rx interrupt */
if (nb_rx_queue == 0)
need_intr = false;
if (need_intr)
local_port_conf.intr_conf.rxq = 1;
ret = rte_eth_dev_info_get(portid, &dev_info);
if (ret != 0)
rte_exit(EXIT_FAILURE,
"Error during getting device (port %u) info: %s\n",
portid, strerror(-ret));
if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
local_port_conf.txmode.offloads |=
DEV_TX_OFFLOAD_MBUF_FAST_FREE;
local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
dev_info.flow_type_rss_offloads;
if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
port_conf.rx_adv_conf.rss_conf.rss_hf) {
printf("Port %u modified RSS hash function based on hardware support,"
"requested:%#"PRIx64" configured:%#"PRIx64"\n",
portid,
port_conf.rx_adv_conf.rss_conf.rss_hf,
local_port_conf.rx_adv_conf.rss_conf.rss_hf);
}
ret = rte_eth_dev_configure(portid, nb_rx_queue,
(uint16_t)n_tx_queue, &local_port_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Cannot configure device: "
"err=%d, port=%d\n", ret, portid);
ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
&nb_txd);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Cannot adjust number of descriptors: err=%d, port=%d\n",
ret, portid);
ret = rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"Cannot get MAC address: err=%d, port=%d\n",
ret, portid);
print_ethaddr(" Address:", &ports_eth_addr[portid]);
printf(", ");
/* init memory */
ret = init_mem(NB_MBUF);
if (ret < 0)
rte_exit(EXIT_FAILURE, "init_mem failed\n");
for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
if (rte_lcore_is_enabled(lcore_id) == 0)
continue;
/* Initialize TX buffers */
qconf = &lcore_conf[lcore_id];
qconf->tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
rte_eth_dev_socket_id(portid));
if (qconf->tx_buffer[portid] == NULL)
rte_exit(EXIT_FAILURE, "Can't allocate tx buffer for port %u\n",
portid);
rte_eth_tx_buffer_init(qconf->tx_buffer[portid], MAX_PKT_BURST);
}
/* init one TX queue per couple (lcore,port) */
queueid = 0;
for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
if (rte_lcore_is_enabled(lcore_id) == 0)
continue;
if (queueid >= dev_txq_num)
continue;
if (numa_on)
socketid = \
(uint8_t)rte_lcore_to_socket_id(lcore_id);
else
socketid = 0;
printf("txq=%u,%d,%d ", lcore_id, queueid, socketid);
fflush(stdout);
txconf = &dev_info.default_txconf;
txconf->offloads = local_port_conf.txmode.offloads;
ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
socketid, txconf);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_tx_queue_setup: err=%d, "
"port=%d\n", ret, portid);
qconf = &lcore_conf[lcore_id];
qconf->tx_queue_id[portid] = queueid;
queueid++;
qconf->tx_port_id[qconf->n_tx_port] = portid;
qconf->n_tx_port++;
}
printf("\n");
}
for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
if (rte_lcore_is_enabled(lcore_id) == 0)
continue;
if (app_mode == APP_MODE_LEGACY) {
/* init timer structures for each enabled lcore */
rte_timer_init(&power_timers[lcore_id]);
hz = rte_get_timer_hz();
rte_timer_reset(&power_timers[lcore_id],
hz/TIMER_NUMBER_PER_SECOND,
SINGLE, lcore_id,
power_timer_cb, NULL);
}
qconf = &lcore_conf[lcore_id];
printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
fflush(stdout);
/* init RX queues */
for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
struct rte_eth_rxconf rxq_conf;
portid = qconf->rx_queue_list[queue].port_id;
queueid = qconf->rx_queue_list[queue].queue_id;
if (numa_on)
socketid = \
(uint8_t)rte_lcore_to_socket_id(lcore_id);
else
socketid = 0;
printf("rxq=%d,%d,%d ", portid, queueid, socketid);
fflush(stdout);
ret = rte_eth_dev_info_get(portid, &dev_info);
if (ret != 0)
rte_exit(EXIT_FAILURE,
"Error during getting device (port %u) info: %s\n",
portid, strerror(-ret));
rxq_conf = dev_info.default_rxconf;
rxq_conf.offloads = port_conf.rxmode.offloads;
ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
socketid, &rxq_conf,
pktmbuf_pool[socketid]);
if (ret < 0)
rte_exit(EXIT_FAILURE,
"rte_eth_rx_queue_setup: err=%d, "
"port=%d\n", ret, portid);
if (parse_ptype) {
if (add_cb_parse_ptype(portid, queueid) < 0)
rte_exit(EXIT_FAILURE,
"Fail to add ptype cb\n");
} else if (!check_ptype(portid))
rte_exit(EXIT_FAILURE,
"PMD can not provide needed ptypes\n");
}
}
printf("\n");
/* start ports */
RTE_ETH_FOREACH_DEV(portid) {
if ((enabled_port_mask & (1 << portid)) == 0) {
continue;
}
/* Start device */
ret = rte_eth_dev_start(portid);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eth_dev_start: err=%d, "
"port=%d\n", ret, portid);
/*
* If enabled, put device in promiscuous mode.
* This allows IO forwarding mode to forward packets
* to itself through 2 cross-connected ports of the
* target machine.
*/
if (promiscuous_on) {
ret = rte_eth_promiscuous_enable(portid);
if (ret != 0)
rte_exit(EXIT_FAILURE,
"rte_eth_promiscuous_enable: err=%s, port=%u\n",
rte_strerror(-ret), portid);
}
/* initialize spinlock for each port */
rte_spinlock_init(&(locks[portid]));
}
check_all_ports_link_status(enabled_port_mask);
if (app_mode == APP_MODE_EMPTY_POLL) {
if (empty_poll_train) {
policy.state = TRAINING;
} else {
policy.state = MED_NORMAL;
policy.med_base_edpi = ep_med_edpi;
policy.hgh_base_edpi = ep_hgh_edpi;
}
ret = rte_power_empty_poll_stat_init(&ep_params,
freq_tlb,
&policy);
if (ret < 0)
rte_exit(EXIT_FAILURE, "empty poll init failed");
}
/* launch per-lcore init on every lcore */
if (app_mode == APP_MODE_LEGACY) {
rte_eal_mp_remote_launch(main_legacy_loop, NULL, CALL_MASTER);
} else if (app_mode == APP_MODE_EMPTY_POLL) {
empty_poll_stop = false;
rte_eal_mp_remote_launch(main_empty_poll_loop, NULL,
SKIP_MASTER);
} else if (app_mode == APP_MODE_TELEMETRY) {
unsigned int i;
/* Init metrics library */
rte_metrics_init(rte_socket_id());
/** Register stats with metrics library */
for (i = 0; i < NUM_TELSTATS; i++)
ptr_strings[i] = telstats_strings[i].name;
ret = rte_metrics_reg_names(ptr_strings, NUM_TELSTATS);
if (ret >= 0)
telstats_index = ret;
else
rte_exit(EXIT_FAILURE, "failed to register metrics names");
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
rte_spinlock_init(&stats[lcore_id].telemetry_lock);
}
rte_timer_init(&telemetry_timer);
rte_telemetry_register_cmd("/l3fwd-power/stats",
handle_app_stats,
"Returns global power stats. Parameters: None");
rte_eal_mp_remote_launch(main_telemetry_loop, NULL,
SKIP_MASTER);
} else if (app_mode == APP_MODE_INTERRUPT) {
rte_eal_mp_remote_launch(main_intr_loop, NULL, CALL_MASTER);
}
if (app_mode == APP_MODE_EMPTY_POLL || app_mode == APP_MODE_TELEMETRY)
launch_timer(rte_lcore_id());
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
RTE_ETH_FOREACH_DEV(portid)
{
if ((enabled_port_mask & (1 << portid)) == 0)
continue;
rte_eth_dev_stop(portid);
rte_eth_dev_close(portid);
}
if (app_mode == APP_MODE_EMPTY_POLL)
rte_power_empty_poll_stat_free();
if ((app_mode == APP_MODE_LEGACY || app_mode == APP_MODE_EMPTY_POLL) &&
deinit_power_library())
rte_exit(EXIT_FAILURE, "deinit_power_library failed\n");
if (rte_eal_cleanup() < 0)
RTE_LOG(ERR, L3FWD_POWER, "EAL cleanup failed\n");
return 0;
}
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