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numam-dpdk/examples/ip_fragmentation/main.c
Thomas Monjalon 8728ccf376 fix ethdev ports enumeration 
Some DPDK applications wrongly assume these requirements:
    - no hotplug, i.e. ports are never detached
    - all allocated ports are available to the application

Such application iterates over ports by its own mean.
The most common pattern is to request the port count and
assume ports with index in the range [0..count[ can be used.

There are three consequences when using such wrong design:
    - new ports having an index higher than the port count won't be seen
    - old ports being detached (RTE_ETH_DEV_UNUSED) can be seen as ghosts
    - failsafe sub-devices (RTE_ETH_DEV_DEFERRED) will be seen by the application

Such mistake will be less common with growing hotplug awareness.
All applications and examples inside this repository - except testpmd -
must be fixed to use the iterator RTE_ETH_FOREACH_DEV.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
2018-04-18 00:25:27 +02:00

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>
#include <sys/param.h>
#include <string.h>
#include <sys/queue.h>
#include <stdarg.h>
#include <errno.h>
#include <getopt.h>
#include <rte_common.h>
#include <rte_byteorder.h>
#include <rte_log.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_lpm.h>
#include <rte_lpm6.h>
#include <rte_ip.h>
#include <rte_string_fns.h>
#include <rte_ip_frag.h>
#define RTE_LOGTYPE_IP_FRAG RTE_LOGTYPE_USER1
/* allow max jumbo frame 9.5 KB */
#define JUMBO_FRAME_MAX_SIZE 0x2600
#define ROUNDUP_DIV(a, b) (((a) + (b) - 1) / (b))
/*
* Default byte size for the IPv6 Maximum Transfer Unit (MTU).
* This value includes the size of IPv6 header.
*/
#define IPV4_MTU_DEFAULT ETHER_MTU
#define IPV6_MTU_DEFAULT ETHER_MTU
/*
* Default payload in bytes for the IPv6 packet.
*/
#define IPV4_DEFAULT_PAYLOAD (IPV4_MTU_DEFAULT - sizeof(struct ipv4_hdr))
#define IPV6_DEFAULT_PAYLOAD (IPV6_MTU_DEFAULT - sizeof(struct ipv6_hdr))
/*
* Max number of fragments per packet expected - defined by config file.
*/
#define MAX_PACKET_FRAG RTE_LIBRTE_IP_FRAG_MAX_FRAG
#define NB_MBUF 8192
#define MAX_PKT_BURST 32
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
/* 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
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 ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
#ifndef IPv4_BYTES
#define IPv4_BYTES_FMT "%" PRIu8 ".%" PRIu8 ".%" PRIu8 ".%" PRIu8
#define IPv4_BYTES(addr) \
(uint8_t) (((addr) >> 24) & 0xFF),\
(uint8_t) (((addr) >> 16) & 0xFF),\
(uint8_t) (((addr) >> 8) & 0xFF),\
(uint8_t) ((addr) & 0xFF)
#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 IPV6_ADDR_LEN 16
/* mask of enabled ports */
static int enabled_port_mask = 0;
static int rx_queue_per_lcore = 1;
#define MBUF_TABLE_SIZE (2 * MAX(MAX_PKT_BURST, MAX_PACKET_FRAG))
struct mbuf_table {
uint16_t len;
struct rte_mbuf *m_table[MBUF_TABLE_SIZE];
};
struct rx_queue {
struct rte_mempool *direct_pool;
struct rte_mempool *indirect_pool;
struct rte_lpm *lpm;
struct rte_lpm6 *lpm6;
uint16_t portid;
};
#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT 16
struct lcore_queue_conf {
uint16_t n_rx_queue;
uint16_t tx_queue_id[RTE_MAX_ETHPORTS];
struct rx_queue rx_queue_list[MAX_RX_QUEUE_PER_LCORE];
struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
} __rte_cache_aligned;
struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
static struct rte_eth_conf port_conf = {
.rxmode = {
.max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
.split_hdr_size = 0,
.ignore_offload_bitfield = 1,
.offloads = (DEV_RX_OFFLOAD_CHECKSUM |
DEV_RX_OFFLOAD_JUMBO_FRAME |
DEV_RX_OFFLOAD_CRC_STRIP),
},
.txmode = {
.mq_mode = ETH_MQ_TX_NONE,
.offloads = (DEV_TX_OFFLOAD_IPV4_CKSUM |
DEV_TX_OFFLOAD_MULTI_SEGS),
},
};
/*
* IPv4 forwarding table
*/
struct l3fwd_ipv4_route {
uint32_t ip;
uint8_t depth;
uint8_t if_out;
};
struct l3fwd_ipv4_route l3fwd_ipv4_route_array[] = {
{IPv4(100,10,0,0), 16, 0},
{IPv4(100,20,0,0), 16, 1},
{IPv4(100,30,0,0), 16, 2},
{IPv4(100,40,0,0), 16, 3},
{IPv4(100,50,0,0), 16, 4},
{IPv4(100,60,0,0), 16, 5},
{IPv4(100,70,0,0), 16, 6},
{IPv4(100,80,0,0), 16, 7},
};
/*
* IPv6 forwarding table
*/
struct l3fwd_ipv6_route {
uint8_t ip[IPV6_ADDR_LEN];
uint8_t depth;
uint8_t if_out;
};
static struct l3fwd_ipv6_route l3fwd_ipv6_route_array[] = {
{{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 0},
{{2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 1},
{{3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 2},
{{4,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 3},
{{5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 4},
{{6,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 5},
{{7,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 6},
{{8,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}, 48, 7},
};
#define LPM_MAX_RULES 1024
#define LPM6_MAX_RULES 1024
#define LPM6_NUMBER_TBL8S (1 << 16)
struct rte_lpm6_config lpm6_config = {
.max_rules = LPM6_MAX_RULES,
.number_tbl8s = LPM6_NUMBER_TBL8S,
.flags = 0
};
static struct rte_mempool *socket_direct_pool[RTE_MAX_NUMA_NODES];
static struct rte_mempool *socket_indirect_pool[RTE_MAX_NUMA_NODES];
static struct rte_lpm *socket_lpm[RTE_MAX_NUMA_NODES];
static struct rte_lpm6 *socket_lpm6[RTE_MAX_NUMA_NODES];
/* Send burst of packets on an output interface */
static inline int
send_burst(struct lcore_queue_conf *qconf, uint16_t n, uint16_t port)
{
struct rte_mbuf **m_table;
int ret;
uint16_t queueid;
queueid = qconf->tx_queue_id[port];
m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
ret = rte_eth_tx_burst(port, queueid, m_table, n);
if (unlikely(ret < n)) {
do {
rte_pktmbuf_free(m_table[ret]);
} while (++ret < n);
}
return 0;
}
static inline void
l3fwd_simple_forward(struct rte_mbuf *m, struct lcore_queue_conf *qconf,
uint8_t queueid, uint16_t port_in)
{
struct rx_queue *rxq;
uint32_t i, len, next_hop;
uint8_t ipv6;
uint16_t port_out;
int32_t len2;
ipv6 = 0;
rxq = &qconf->rx_queue_list[queueid];
/* by default, send everything back to the source port */
port_out = port_in;
/* Remove the Ethernet header and trailer from the input packet */
rte_pktmbuf_adj(m, (uint16_t)sizeof(struct ether_hdr));
/* Build transmission burst */
len = qconf->tx_mbufs[port_out].len;
/* if this is an IPv4 packet */
if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
struct ipv4_hdr *ip_hdr;
uint32_t ip_dst;
/* Read the lookup key (i.e. ip_dst) from the input packet */
ip_hdr = rte_pktmbuf_mtod(m, struct ipv4_hdr *);
ip_dst = rte_be_to_cpu_32(ip_hdr->dst_addr);
/* Find destination port */
if (rte_lpm_lookup(rxq->lpm, ip_dst, &next_hop) == 0 &&
(enabled_port_mask & 1 << next_hop) != 0) {
port_out = next_hop;
/* Build transmission burst for new port */
len = qconf->tx_mbufs[port_out].len;
}
/* if we don't need to do any fragmentation */
if (likely (IPV4_MTU_DEFAULT >= m->pkt_len)) {
qconf->tx_mbufs[port_out].m_table[len] = m;
len2 = 1;
} else {
len2 = rte_ipv4_fragment_packet(m,
&qconf->tx_mbufs[port_out].m_table[len],
(uint16_t)(MBUF_TABLE_SIZE - len),
IPV4_MTU_DEFAULT,
rxq->direct_pool, rxq->indirect_pool);
/* Free input packet */
rte_pktmbuf_free(m);
/* If we fail to fragment the packet */
if (unlikely (len2 < 0))
return;
}
} else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
/* if this is an IPv6 packet */
struct ipv6_hdr *ip_hdr;
ipv6 = 1;
/* Read the lookup key (i.e. ip_dst) from the input packet */
ip_hdr = rte_pktmbuf_mtod(m, struct ipv6_hdr *);
/* Find destination port */
if (rte_lpm6_lookup(rxq->lpm6, ip_hdr->dst_addr,
&next_hop) == 0 &&
(enabled_port_mask & 1 << next_hop) != 0) {
port_out = next_hop;
/* Build transmission burst for new port */
len = qconf->tx_mbufs[port_out].len;
}
/* if we don't need to do any fragmentation */
if (likely (IPV6_MTU_DEFAULT >= m->pkt_len)) {
qconf->tx_mbufs[port_out].m_table[len] = m;
len2 = 1;
} else {
len2 = rte_ipv6_fragment_packet(m,
&qconf->tx_mbufs[port_out].m_table[len],
(uint16_t)(MBUF_TABLE_SIZE - len),
IPV6_MTU_DEFAULT,
rxq->direct_pool, rxq->indirect_pool);
/* Free input packet */
rte_pktmbuf_free(m);
/* If we fail to fragment the packet */
if (unlikely (len2 < 0))
return;
}
}
/* else, just forward the packet */
else {
qconf->tx_mbufs[port_out].m_table[len] = m;
len2 = 1;
}
for (i = len; i < len + len2; i ++) {
void *d_addr_bytes;
m = qconf->tx_mbufs[port_out].m_table[i];
struct ether_hdr *eth_hdr = (struct ether_hdr *)
rte_pktmbuf_prepend(m, (uint16_t)sizeof(struct ether_hdr));
if (eth_hdr == NULL) {
rte_panic("No headroom in mbuf.\n");
}
m->l2_len = sizeof(struct ether_hdr);
/* 02:00:00:00:00:xx */
d_addr_bytes = &eth_hdr->d_addr.addr_bytes[0];
*((uint64_t *)d_addr_bytes) = 0x000000000002 + ((uint64_t)port_out << 40);
/* src addr */
ether_addr_copy(&ports_eth_addr[port_out], &eth_hdr->s_addr);
if (ipv6)
eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv6);
else
eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv4);
}
len += len2;
if (likely(len < MAX_PKT_BURST)) {
qconf->tx_mbufs[port_out].len = (uint16_t)len;
return;
}
/* Transmit packets */
send_burst(qconf, (uint16_t)len, port_out);
qconf->tx_mbufs[port_out].len = 0;
}
/* main processing loop */
static int
main_loop(__attribute__((unused)) void *dummy)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
unsigned lcore_id;
uint64_t prev_tsc, diff_tsc, cur_tsc;
int i, j, nb_rx;
uint16_t portid;
struct lcore_queue_conf *qconf;
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_queue_conf[lcore_id];
if (qconf->n_rx_queue == 0) {
RTE_LOG(INFO, IP_FRAG, "lcore %u has nothing to do\n", lcore_id);
return 0;
}
RTE_LOG(INFO, IP_FRAG, "entering main loop on lcore %u\n", lcore_id);
for (i = 0; i < qconf->n_rx_queue; i++) {
portid = qconf->rx_queue_list[i].portid;
RTE_LOG(INFO, IP_FRAG, " -- lcoreid=%u portid=%d\n", lcore_id,
portid);
}
while (1) {
cur_tsc = rte_rdtsc();
/*
* TX burst queue drain
*/
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
/*
* This could be optimized (use queueid instead of
* portid), but it is not called so often
*/
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
if (qconf->tx_mbufs[portid].len == 0)
continue;
send_burst(&lcore_queue_conf[lcore_id],
qconf->tx_mbufs[portid].len,
portid);
qconf->tx_mbufs[portid].len = 0;
}
prev_tsc = cur_tsc;
}
/*
* Read packet from RX queues
*/
for (i = 0; i < qconf->n_rx_queue; i++) {
portid = qconf->rx_queue_list[i].portid;
nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
MAX_PKT_BURST);
/* 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], qconf, i, portid);
}
/* Forward remaining prefetched packets */
for (; j < nb_rx; j++) {
l3fwd_simple_forward(pkts_burst[j], qconf, i, portid);
}
}
}
}
/* display usage */
static void
print_usage(const char *prgname)
{
printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
" -p PORTMASK: hexadecimal bitmask of ports to configure\n"
" -q NQ: number of queue (=ports) per lcore (default is 1)\n",
prgname);
}
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_nqueue(const char *q_arg)
{
char *end = NULL;
unsigned long n;
/* parse hexadecimal string */
n = strtoul(q_arg, &end, 10);
if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
return -1;
if (n == 0)
return -1;
if (n >= MAX_RX_QUEUE_PER_LCORE)
return -1;
return n;
}
/* 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[] = {
{NULL, 0, 0, 0}
};
argvopt = argv;
while ((opt = getopt_long(argc, argvopt, "p:q:",
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;
/* nqueue */
case 'q':
rx_queue_per_lcore = parse_nqueue(optarg);
if (rx_queue_per_lcore < 0) {
printf("invalid queue number\n");
print_usage(prgname);
return -1;
}
break;
/* long options */
case 0:
print_usage(prgname);
return -1;
default:
print_usage(prgname);
return -1;
}
}
if (enabled_port_mask == 0) {
printf("portmask not specified\n");
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, struct ether_addr *eth_addr)
{
char buf[ETHER_ADDR_FMT_SIZE];
ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
printf("%s%s", name, buf);
}
/* 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 */
uint16_t portid;
uint8_t count, all_ports_up, print_flag = 0;
struct rte_eth_link link;
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));
rte_eth_link_get_nowait(portid, &link);
/* print link status if flag set */
if (print_flag == 1) {
if (link.link_status)
printf(
"Port%d Link Up .Speed %u Mbps - %s\n",
portid, link.link_speed,
(link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
("full-duplex") : ("half-duplex\n"));
else
printf("Port %d Link Down\n", 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("\ndone\n");
}
}
}
/* Check L3 packet type detection capablity of the NIC port */
static int
check_ptype(int portid)
{
int i, ret;
int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
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 (ptypes[i] & RTE_PTYPE_L3_IPV6)
ptype_l3_ipv6 = 1;
}
if (ptype_l3_ipv4 == 0)
printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
if (ptype_l3_ipv6 == 0)
printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
if (ptype_l3_ipv4 && ptype_l3_ipv6)
return 1;
return 0;
}
/* Parse packet type of a packet by SW */
static inline void
parse_ptype(struct rte_mbuf *m)
{
struct ether_hdr *eth_hdr;
uint32_t packet_type = RTE_PTYPE_UNKNOWN;
uint16_t ether_type;
eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
ether_type = eth_hdr->ether_type;
if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4))
packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6))
packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
m->packet_type = packet_type;
}
/* callback function to detect packet type for a queue of a port */
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)
{
uint16_t i;
for (i = 0; i < nb_pkts; ++i)
parse_ptype(pkts[i]);
return nb_pkts;
}
static int
init_routing_table(void)
{
struct rte_lpm *lpm;
struct rte_lpm6 *lpm6;
int socket, ret;
unsigned i;
for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
if (socket_lpm[socket]) {
lpm = socket_lpm[socket];
/* populate the LPM table */
for (i = 0; i < RTE_DIM(l3fwd_ipv4_route_array); i++) {
ret = rte_lpm_add(lpm,
l3fwd_ipv4_route_array[i].ip,
l3fwd_ipv4_route_array[i].depth,
l3fwd_ipv4_route_array[i].if_out);
if (ret < 0) {
RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
"LPM table\n", i);
return -1;
}
RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv4_BYTES_FMT
"/%d (port %d)\n",
socket,
IPv4_BYTES(l3fwd_ipv4_route_array[i].ip),
l3fwd_ipv4_route_array[i].depth,
l3fwd_ipv4_route_array[i].if_out);
}
}
if (socket_lpm6[socket]) {
lpm6 = socket_lpm6[socket];
/* populate the LPM6 table */
for (i = 0; i < RTE_DIM(l3fwd_ipv6_route_array); i++) {
ret = rte_lpm6_add(lpm6,
l3fwd_ipv6_route_array[i].ip,
l3fwd_ipv6_route_array[i].depth,
l3fwd_ipv6_route_array[i].if_out);
if (ret < 0) {
RTE_LOG(ERR, IP_FRAG, "Unable to add entry %i to the l3fwd "
"LPM6 table\n", i);
return -1;
}
RTE_LOG(INFO, IP_FRAG, "Socket %i: adding route " IPv6_BYTES_FMT
"/%d (port %d)\n",
socket,
IPv6_BYTES(l3fwd_ipv6_route_array[i].ip),
l3fwd_ipv6_route_array[i].depth,
l3fwd_ipv6_route_array[i].if_out);
}
}
}
return 0;
}
static int
init_mem(void)
{
char buf[PATH_MAX];
struct rte_mempool *mp;
struct rte_lpm *lpm;
struct rte_lpm6 *lpm6;
struct rte_lpm_config lpm_config;
int socket;
unsigned lcore_id;
/* traverse through lcores and initialize structures on each socket */
for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
if (rte_lcore_is_enabled(lcore_id) == 0)
continue;
socket = rte_lcore_to_socket_id(lcore_id);
if (socket == SOCKET_ID_ANY)
socket = 0;
if (socket_direct_pool[socket] == NULL) {
RTE_LOG(INFO, IP_FRAG, "Creating direct mempool on socket %i\n",
socket);
snprintf(buf, sizeof(buf), "pool_direct_%i", socket);
mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32,
0, RTE_MBUF_DEFAULT_BUF_SIZE, socket);
if (mp == NULL) {
RTE_LOG(ERR, IP_FRAG, "Cannot create direct mempool\n");
return -1;
}
socket_direct_pool[socket] = mp;
}
if (socket_indirect_pool[socket] == NULL) {
RTE_LOG(INFO, IP_FRAG, "Creating indirect mempool on socket %i\n",
socket);
snprintf(buf, sizeof(buf), "pool_indirect_%i", socket);
mp = rte_pktmbuf_pool_create(buf, NB_MBUF, 32, 0, 0,
socket);
if (mp == NULL) {
RTE_LOG(ERR, IP_FRAG, "Cannot create indirect mempool\n");
return -1;
}
socket_indirect_pool[socket] = mp;
}
if (socket_lpm[socket] == NULL) {
RTE_LOG(INFO, IP_FRAG, "Creating LPM table on socket %i\n", socket);
snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
lpm_config.max_rules = LPM_MAX_RULES;
lpm_config.number_tbl8s = 256;
lpm_config.flags = 0;
lpm = rte_lpm_create(buf, socket, &lpm_config);
if (lpm == NULL) {
RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
return -1;
}
socket_lpm[socket] = lpm;
}
if (socket_lpm6[socket] == NULL) {
RTE_LOG(INFO, IP_FRAG, "Creating LPM6 table on socket %i\n", socket);
snprintf(buf, sizeof(buf), "IP_FRAG_LPM_%i", socket);
lpm6 = rte_lpm6_create(buf, socket, &lpm6_config);
if (lpm6 == NULL) {
RTE_LOG(ERR, IP_FRAG, "Cannot create LPM table\n");
return -1;
}
socket_lpm6[socket] = lpm6;
}
}
return 0;
}
int
main(int argc, char **argv)
{
struct lcore_queue_conf *qconf;
struct rte_eth_dev_info dev_info;
struct rte_eth_txconf *txconf;
struct rx_queue *rxq;
int socket, ret;
unsigned nb_ports;
uint16_t queueid = 0;
unsigned lcore_id = 0, rx_lcore_id = 0;
uint32_t n_tx_queue, nb_lcores;
uint16_t portid;
/* init EAL */
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eal_init failed");
argc -= ret;
argv += ret;
/* parse application arguments (after the EAL ones) */
ret = parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid arguments");
nb_ports = rte_eth_dev_count();
if (nb_ports == 0)
rte_exit(EXIT_FAILURE, "No ports found!\n");
nb_lcores = rte_lcore_count();
/* initialize structures (mempools, lpm etc.) */
if (init_mem() < 0)
rte_panic("Cannot initialize memory structures!\n");
/* check if portmask has non-existent ports */
if (enabled_port_mask & ~(RTE_LEN2MASK(nb_ports, unsigned)))
rte_exit(EXIT_FAILURE, "Non-existent ports in portmask!\n");
/* initialize all ports */
RTE_ETH_FOREACH_DEV(portid) {
struct rte_eth_conf local_port_conf = port_conf;
struct rte_eth_rxconf rxq_conf;
/* skip ports that are not enabled */
if ((enabled_port_mask & (1 << portid)) == 0) {
printf("Skipping disabled port %d\n", portid);
continue;
}
qconf = &lcore_queue_conf[rx_lcore_id];
/* limit the frame size to the maximum supported by NIC */
rte_eth_dev_info_get(portid, &dev_info);
local_port_conf.rxmode.max_rx_pkt_len = RTE_MIN(
dev_info.max_rx_pktlen,
local_port_conf.rxmode.max_rx_pkt_len);
/* get the lcore_id for this port */
while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
qconf->n_rx_queue == (unsigned)rx_queue_per_lcore) {
rx_lcore_id ++;
if (rx_lcore_id >= RTE_MAX_LCORE)
rte_exit(EXIT_FAILURE, "Not enough cores\n");
qconf = &lcore_queue_conf[rx_lcore_id];
}
socket = (int) rte_lcore_to_socket_id(rx_lcore_id);
if (socket == SOCKET_ID_ANY)
socket = 0;
rxq = &qconf->rx_queue_list[qconf->n_rx_queue];
rxq->portid = portid;
rxq->direct_pool = socket_direct_pool[socket];
rxq->indirect_pool = socket_indirect_pool[socket];
rxq->lpm = socket_lpm[socket];
rxq->lpm6 = socket_lpm6[socket];
qconf->n_rx_queue++;
/* init port */
printf("Initializing port %d on lcore %u...", portid,
rx_lcore_id);
fflush(stdout);
n_tx_queue = nb_lcores;
if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
n_tx_queue = MAX_TX_QUEUE_PER_PORT;
if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
local_port_conf.txmode.offloads |=
DEV_TX_OFFLOAD_MBUF_FAST_FREE;
ret = rte_eth_dev_configure(portid, 1, (uint16_t)n_tx_queue,
&local_port_conf);
if (ret < 0) {
printf("\n");
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) {
printf("\n");
rte_exit(EXIT_FAILURE, "Cannot adjust number of "
"descriptors: err=%d, port=%d\n", ret, portid);
}
/* init one RX queue */
rxq_conf = dev_info.default_rxconf;
rxq_conf.offloads = local_port_conf.rxmode.offloads;
ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
socket, &rxq_conf,
socket_direct_pool[socket]);
if (ret < 0) {
printf("\n");
rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: "
"err=%d, port=%d\n",
ret, portid);
}
rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
print_ethaddr(" Address:", &ports_eth_addr[portid]);
printf("\n");
/* 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;
socket = (int) rte_lcore_to_socket_id(lcore_id);
printf("txq=%u,%d ", lcore_id, queueid);
fflush(stdout);
txconf = &dev_info.default_txconf;
txconf->txq_flags = ETH_TXQ_FLAGS_IGNORE;
txconf->offloads = local_port_conf.txmode.offloads;
ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
socket, txconf);
if (ret < 0) {
printf("\n");
rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup: "
"err=%d, port=%d\n", ret, portid);
}
qconf = &lcore_queue_conf[lcore_id];
qconf->tx_queue_id[portid] = queueid;
queueid++;
}
printf("\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);
rte_eth_promiscuous_enable(portid);
if (check_ptype(portid) == 0) {
rte_eth_add_rx_callback(portid, 0, cb_parse_ptype, NULL);
printf("Add Rx callback function to detect L3 packet type by SW :"
" port = %d\n", portid);
}
}
if (init_routing_table() < 0)
rte_exit(EXIT_FAILURE, "Cannot init routing table\n");
check_all_ports_link_status(enabled_port_mask);
/* launch per-lcore init on every lcore */
rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
return 0;
}
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