/
pfcount.c
1262 lines (1017 loc) · 37.1 KB
/
pfcount.c
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/*
* (C) 2003-2019 - ntop
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#define _GNU_SOURCE
#include <signal.h>
#include <sched.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <errno.h>
#include <poll.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <net/ethernet.h> /* the L2 protocols */
#include <sys/time.h>
#include <time.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <monetary.h>
#include <locale.h>
#include "pfring.h"
#include "pfutils.c"
#include "pfring_mod_sysdig.h"
#include "third-party/sort.c"
#include "third-party/node.c"
#include "third-party/ahocorasick.c"
#define ALARM_SLEEP 1
#define DEFAULT_SNAPLEN 1536
#define MAX_NUM_THREADS 64
#define DEFAULT_DEVICE "eth0"
#define NO_ZC_BUFFER_LEN 9000
pfring *pd;
int verbose = 0, quiet = 0, num_threads = 1;
pfring_stat pfringStats;
void *automa = NULL;
static struct timeval startTime;
pcap_dumper_t *dumper = NULL;
u_int string_id = 1;
char *out_pcap_file = NULL;
FILE *match_dumper = NULL;
u_int8_t do_close_dump = 0, is_sysdig = 0, chunk_mode = 0, check_ts;
int num_packets = 0;
time_t last_ts = 0;
struct app_stats {
u_int64_t numPkts[MAX_NUM_THREADS];
u_int64_t numBytes[MAX_NUM_THREADS];
u_int64_t numStringMatches[MAX_NUM_THREADS];
volatile u_int64_t do_shutdown;
};
struct app_stats *stats;
struct strmatch {
char *str;
struct strmatch *next;
};
struct strmatch *matching_strings = NULL;
u_int8_t wait_for_packet = 1, do_shutdown = 0, add_drop_rule = 0;
u_int8_t use_extended_pkt_header = 0, touch_payload = 0, enable_hw_timestamp = 0, dont_strip_timestamps = 0, memcpy_test = 0;
volatile char memcpy_test_buffer[9216];
static void openDump();
static void dumpMatch(char *str);
/* ******************************** */
void print_stats() {
pfring_stat pfringStat;
struct timeval endTime;
double deltaMillisec;
static u_int8_t print_all;
static u_int64_t lastPkts = 0;
static u_int64_t lastBytes = 0;
double diff, bytesDiff;
static struct timeval lastTime;
char buf[256], buf1[64], buf2[64], buf3[64], buf4[64], timebuf[128];
u_int64_t deltaMillisecStart;
if(startTime.tv_sec == 0) {
gettimeofday(&startTime, NULL);
print_all = 0;
} else
print_all = 1;
gettimeofday(&endTime, NULL);
deltaMillisec = delta_time(&endTime, &startTime);
if(pfring_stats(pd, &pfringStat) >= 0) {
double thpt;
int i;
unsigned long long nBytes = 0, nPkts = 0, nMatches = 0;
for(i=0; i < num_threads; i++) {
nBytes += stats->numBytes[i];
nPkts += stats->numPkts[i];
nMatches += stats->numStringMatches[i];
}
deltaMillisecStart = delta_time(&endTime, &startTime);
snprintf(buf, sizeof(buf),
"Duration: %s\n"
"Packets: %lu\n"
"Dropped: %lu\n"
"Bytes: %lu\n",
msec2dhmsm(deltaMillisecStart, timebuf, sizeof(timebuf)),
(long unsigned int) nPkts,
(long unsigned int) pfringStat.drop,
(long unsigned int) nBytes);
pfring_set_application_stats(pd, buf);
thpt = ((double)8*nBytes)/(deltaMillisec*1000);
fprintf(stderr, "=========================\n"
"Absolute Stats: [%s pkts total][%s pkts dropped][%.1f%% dropped]\n",
pfring_format_numbers((double)(nPkts + pfringStat.drop), buf2, sizeof(buf2), 0),
pfring_format_numbers((double)(pfringStat.drop), buf3, sizeof(buf3), 0),
pfringStat.drop == 0 ? 0 :
(double)(pfringStat.drop*100)/(double)(nPkts + pfringStat.drop));
fprintf(stderr, "[%s %s rcvd][%s bytes rcvd]",
pfring_format_numbers((double)nPkts, buf1, sizeof(buf1), 0),
chunk_mode == 1 ? "chunks" : "pkts",
pfring_format_numbers((double)nBytes, buf2, sizeof(buf2), 0));
if(print_all)
fprintf(stderr, "[%s %s/sec][%s Mbit/sec]\n",
pfring_format_numbers((double)(nPkts*1000)/deltaMillisec, buf1, sizeof(buf1), 1),
chunk_mode == 1 ? "chunk" : "pkt",
pfring_format_numbers(thpt, buf2, sizeof(buf2), 1));
else
fprintf(stderr, "\n");
if(automa != NULL)
fprintf(stderr, "String matched: %llu\n", nMatches);
if(print_all && (lastTime.tv_sec > 0)) {
deltaMillisec = delta_time(&endTime, &lastTime);
diff = nPkts-lastPkts;
bytesDiff = nBytes - lastBytes;
bytesDiff /= (1000*1000*1000)/8;
snprintf(buf, sizeof(buf),
"Actual Stats: [%s %s rcvd][%s ms][%s %s][%s Gbps]",
pfring_format_numbers(diff, buf4, sizeof(buf4), 0),
chunk_mode == 1 ? "chunks" : "pkts",
pfring_format_numbers(deltaMillisec, buf1, sizeof(buf1), 1),
pfring_format_numbers(((double)diff/(double)(deltaMillisec/1000)), buf2, sizeof(buf2), 1),
chunk_mode == 1 ? "cps" : "pps",
pfring_format_numbers(((double)bytesDiff/(double)(deltaMillisec/1000)), buf3, sizeof(buf3), 1));
fprintf(stderr, "=========================\n%s\n", buf);
}
lastPkts = nPkts, lastBytes = nBytes;
}
lastTime.tv_sec = endTime.tv_sec, lastTime.tv_usec = endTime.tv_usec;
fprintf(stderr, "=========================\n\n");
}
/* ******************************** */
void sample_filtering_rules(){
int rc;
if (0) {
filtering_rule rule;
#define DUMMY_PLUGIN_ID 1
memset(&rule, 0, sizeof(rule));
rule.rule_id = 5;
rule.rule_action = forward_packet_and_stop_rule_evaluation;
rule.core_fields.proto = 6 /* tcp */;
if((rc = pfring_add_filtering_rule(pd, &rule)) < 0)
fprintf(stderr, "pfring_add_filtering_rule(2) failed\n");
else if (!quiet)
printf("Rule added successfully...\n");
}
if (0) {
filtering_rule rule;
char *sgsn = "1.2.3.4";
char *ggsn = "1.2.3.5";
/* ************************************* */
memset(&rule, 0, sizeof(rule));
rule.rule_id = 1;
rule.rule_action = forward_packet_and_stop_rule_evaluation;
rule.core_fields.proto = 17 /* UDP */;
rule.core_fields.shost.v4 = ntohl(inet_addr(sgsn)),rule.core_fields.shost_mask.v4 = 0xFFFFFFFF;
rule.core_fields.dhost.v4 = ntohl(inet_addr(ggsn)), rule.core_fields.dhost_mask.v4 = 0xFFFFFFFF;
rule.extended_fields.tunnel.tunnel_id = 0x0000a2b6;
if((rc = pfring_add_filtering_rule(pd, &rule)) < 0)
fprintf(stderr, "pfring_add_filtering_rule(id=%d) failed: rc=%d\n", rule.rule_id, rc);
else if (!quiet)
printf("Rule %d added successfully...\n", rule.rule_id );
/* ************************************* */
memset(&rule, 0, sizeof(rule));
rule.rule_id = 2;
rule.rule_action = forward_packet_and_stop_rule_evaluation;
rule.core_fields.proto = 17 /* UDP */;
rule.core_fields.shost.v4 = ntohl(inet_addr(ggsn)), rule.core_fields.dhost_mask.v4 = 0xFFFFFFFF;
rule.core_fields.dhost.v4 = ntohl(inet_addr(sgsn)), rule.core_fields.shost_mask.v4 = 0xFFFFFFFF;
rule.extended_fields.tunnel.tunnel_id = 0x776C0000;
if((rc = pfring_add_filtering_rule(pd, &rule)) < 0)
fprintf(stderr, "pfring_add_filtering_rule(id=%d) failed: rc=%d\n", rule.rule_id, rc);
else if (!quiet)
printf("Rule %d added successfully...\n", rule.rule_id );
/* ************************************** */
/* Signaling (Up) */
memset(&rule, 0, sizeof(rule));
rule.rule_id = 3;
rule.rule_action = forward_packet_and_stop_rule_evaluation;
rule.core_fields.proto = 17 /* UDP */;
rule.core_fields.sport_low = rule.core_fields.sport_high = 2123;
rule.extended_fields.tunnel.tunnel_id = NO_TUNNEL_ID; /* Ignore the tunnel */
if((rc = pfring_add_filtering_rule(pd, &rule)) < 0)
fprintf(stderr, "pfring_add_filtering_rule(id=%d) failed: rc=%d\n", rule.rule_id, rc);
else if (!quiet)
printf("Rule %d added successfully...\n", rule.rule_id );
memset(&rule, 0, sizeof(rule));
/* ************************************** */
/* Signaling (Down) */
memset(&rule, 0, sizeof(rule));
rule.rule_id = 4;
rule.rule_action = forward_packet_and_stop_rule_evaluation;
rule.core_fields.proto = 17 /* UDP */;
rule.core_fields.dport_low = rule.core_fields.dport_high = 2123;
rule.extended_fields.tunnel.tunnel_id = NO_TUNNEL_ID; /* Ignore the tunnel */
if((rc = pfring_add_filtering_rule(pd, &rule)) < 0)
fprintf(stderr, "pfring_add_filtering_rule(id=%d) failed: rc=%d\n", rule.rule_id, rc);
else if (!quiet)
printf("Rule %d added successfully...\n", rule.rule_id );
memset(&rule, 0, sizeof(rule));
/* ************************************** */
pfring_toggle_filtering_policy(pd, 0); /* Default to drop */
}
if (0) { /* Accolade */
hw_filtering_rule r = { 0 };
r.rule_family_type = accolade_default;
r.rule_family.accolade_rule.action = accolade_drop;
pfring_add_hw_rule(pd, &r);
memset(&r, 0, sizeof(r));
r.rule_id = 0;
r.rule_family_type = accolade_rule;
r.rule_family.accolade_rule.action = accolade_pass;
r.rule_family.accolade_rule.ip_version = 4;
r.rule_family.accolade_rule.protocol = 6;
r.rule_family.accolade_rule.src_addr.v4 = ntohl(inet_addr("10.62.4.239"));
r.rule_family.accolade_rule.src_addr_bits = 32;
r.rule_family.accolade_rule.src_port_low = 80;
r.rule_family.accolade_rule.dst_addr.v4 = ntohl(inet_addr("10.62.7.8"));
r.rule_family.accolade_rule.dst_addr_bits = 32;
r.rule_family.accolade_rule.dst_port_low = 54830;
if ((rc = pfring_add_hw_rule(pd, &r)) < 0)
fprintf(stderr, "pfring_add_hw_rule(id=%d) failed: rc=%d\n", r.rule_id, rc);
else
printf("Rule %d added successfully...\n", r.rule_id );
}
}
/* ******************************** */
void drop_packet_rule(const struct pfring_pkthdr *h) {
const struct pkt_parsing_info *hdr = &h->extended_hdr.parsed_pkt;
static int rule_id=0;
if(add_drop_rule == 1) {
hash_filtering_rule rule;
memset(&rule, 0, sizeof(hash_filtering_rule));
rule.rule_id = rule_id++;
rule.vlan_id = hdr->vlan_id;
rule.proto = hdr->l3_proto;
rule.ip_version = hdr->ip_version;
rule.rule_action = dont_forward_packet_and_stop_rule_evaluation;
rule.host4_peer_a = hdr->ip_src.v4, rule.host4_peer_b = hdr->ip_dst.v4;
rule.port_peer_a = hdr->l4_src_port, rule.port_peer_b = hdr->l4_dst_port;
if(pfring_handle_hash_filtering_rule(pd, &rule, 1 /* add_rule */) < 0)
fprintf(stderr, "pfring_handle_hash_filtering_rule(1) failed\n");
else if (!quiet)
printf("Added filtering rule %d\n", rule.rule_id);
} else {
filtering_rule rule;
int rc;
memset(&rule, 0, sizeof(rule));
rule.rule_id = rule_id++;
rule.rule_action = dont_forward_packet_and_stop_rule_evaluation;
rule.core_fields.proto = hdr->l3_proto;
rule.core_fields.shost.v4 = hdr->ip_src.v4, rule.core_fields.shost_mask.v4 = 0xFFFFFFFF;
rule.core_fields.sport_low = rule.core_fields.sport_high = hdr->l4_src_port;
rule.core_fields.dhost.v4 = hdr->ip_dst.v4, rule.core_fields.dhost_mask.v4 = 0xFFFFFFFF;
rule.core_fields.dport_low = rule.core_fields.dport_high = hdr->l4_dst_port;
if((rc = pfring_add_filtering_rule(pd, &rule)) < 0)
fprintf(stderr, "pfring_add_filtering_rule(2) failed\n");
else if (!quiet)
printf("Rule %d added successfully...\n", rule.rule_id);
}
}
/* ******************************** */
void sigproc(int sig) {
static int called = 0;
if (!quiet)
fprintf(stderr, "Leaving...\n");
if(called) return; else called = 1;
stats->do_shutdown = 1;
if (!quiet)
print_stats();
pfring_breakloop(pd);
}
/* ******************************** */
void my_sigalarm(int sig) {
if(stats->do_shutdown)
return;
print_stats();
alarm(ALARM_SLEEP);
signal(SIGALRM, my_sigalarm);
}
/* ****************************************************** */
static char *etheraddr_string(const u_char *ep, char *buf) {
char *hex = "0123456789ABCDEF";
u_int i, j;
char *cp;
cp = buf;
if((j = *ep >> 4) != 0)
*cp++ = hex[j];
else
*cp++ = '0';
*cp++ = hex[*ep++ & 0xf];
for(i = 5; (int)--i >= 0;) {
*cp++ = ':';
if((j = *ep >> 4) != 0)
*cp++ = hex[j];
else
*cp++ = '0';
*cp++ = hex[*ep++ & 0xf];
}
*cp = '\0';
return (buf);
}
/* *************************************** */
static int search_string(char *string_to_match, u_int string_to_match_len) {
AC_TEXT_t ac_input_text;
int matching_protocol_id = 0;
#if 0
int i;
for(i=0; i<string_to_match_len; i++)
printf("%c", isprint(string_to_match[i]) ? string_to_match[i] : ' ');
printf("\n");
#endif
ac_input_text.astring = string_to_match, ac_input_text.length = string_to_match_len;
ac_automata_search((AC_AUTOMATA_t*)automa, &ac_input_text, (void*)&matching_protocol_id);
ac_automata_reset((AC_AUTOMATA_t*)automa);
return(matching_protocol_id);
}
/* ****************************************************** */
static int32_t thiszone;
void print_packet(const struct pfring_pkthdr *h, const u_char *p, u_int8_t dump_match) {
int s;
u_int usec, nsec = 0;
char dump_str[512] = { 0 };
memset((void *) &h->extended_hdr.parsed_pkt, 0, sizeof(struct pkt_parsing_info));
pfring_parse_pkt((u_char *) p, (struct pfring_pkthdr *) h, 5, 0, 1);
s = (h->ts.tv_sec + thiszone) % 86400;
if(h->extended_hdr.timestamp_ns) {
s = ((h->extended_hdr.timestamp_ns / 1000000000) + thiszone) % 86400;
usec = (h->extended_hdr.timestamp_ns / 1000) % 1000000;
nsec = h->extended_hdr.timestamp_ns % 1000;
} else {
usec = h->ts.tv_usec;
}
snprintf(dump_str, sizeof(dump_str), "%02d:%02d:%02d.%06u%03u ",
s / 3600, (s % 3600) / 60, s % 60,
usec, nsec);
if(is_sysdig) {
struct sysdig_event_header *ev = (struct sysdig_event_header*)p;
snprintf(&dump_str[strlen(dump_str)], sizeof(dump_str)-strlen(dump_str), "[cpu_id=%u][tid=%lu][%u|%s]",
h->extended_hdr.if_index, (long unsigned int)ev->thread_id,
ev->event_type, sysdig_event2name(ev->event_type));
printf("%s\n", dump_str);
return;
}
if(use_extended_pkt_header) {
char bigbuf[4096];
u_int len;
snprintf(&dump_str[strlen(dump_str)], sizeof(dump_str)-strlen(dump_str), "%s[if_index=%d][hash=%u]%s",
h->extended_hdr.rx_direction ? "[RX]" : "[TX]",
h->extended_hdr.if_index,
h->extended_hdr.pkt_hash,
(h->extended_hdr.flags & PKT_FLAGS_FLOW_OFFLOAD_MARKER) ? "[MARKED]" : "");
pfring_print_parsed_pkt(bigbuf, sizeof(bigbuf), p, h);
len = strlen(bigbuf);
if(len > 0) bigbuf[len-1] = '\0';
snprintf(&dump_str[strlen(dump_str)], sizeof(dump_str)-strlen(dump_str), "%s", bigbuf);
} else {
char buf1[32], buf2[32];
struct ether_header *ehdr = (struct ether_header *) p;
snprintf(&dump_str[strlen(dump_str)], sizeof(dump_str)-strlen(dump_str),
"[%s -> %s][eth_type=0x%04X][caplen=%d][len=%d]",
etheraddr_string(ehdr->ether_shost, buf1),
etheraddr_string(ehdr->ether_dhost, buf2),
ntohs(ehdr->ether_type),
h->caplen, h->len);
}
if(verbose) printf("%s\n", dump_str);
if(unlikely(dump_match)) {
/* I need to find out which string matched */
struct strmatch *m = matching_strings;
char *_payload = (char*)&p[42], payload[1500];
u_int payload_len = h->caplen-42, i;
if(payload_len > sizeof(payload)) payload_len = sizeof(payload);
for(i=0; i<payload_len; i++)
payload[i] = isprint(_payload[i]) ? _payload[i] : ' ';
snprintf(&dump_str[strlen(dump_str)], sizeof(dump_str)-strlen(dump_str),
"[matches:");
while(m != NULL) {
if(strstr(payload, m->str)) {
snprintf(&dump_str[strlen(dump_str)], sizeof(dump_str)-strlen(dump_str), " '%s'",
m->str);
}
m = m->next;
}
snprintf(&dump_str[strlen(dump_str)], sizeof(dump_str)-strlen(dump_str), "]\n");
dumpMatch(dump_str);
}
if(verbose == 2) {
int i, len = h->caplen;
for(i = 0; i < len; i++)
printf("%02X ", p[i]);
printf("\n");
}
}
/* ****************************************************** */
void dummyProcessPacket(const struct pfring_pkthdr *h,
const u_char *p, const u_char *user_bytes) {
long threadId = (long)user_bytes;
u_int8_t dump_match = !!dumper;
stats->numPkts[threadId]++, stats->numBytes[threadId] += h->len+24 /* 8 Preamble + 4 CRC + 12 IFG */;
if (unlikely(check_ts && h->ts.tv_sec != last_ts)) {
if (h->ts.tv_sec < last_ts)
printf("Bad timestamp [expected ts >= %ld][received ts = %ld]\n",
last_ts, h->ts.tv_sec);
last_ts = h->ts.tv_sec;
}
if(touch_payload) {
volatile int __attribute__ ((unused)) i;
i = p[12] + p[13];
}
if(memcpy_test)
memcpy((void *) memcpy_test_buffer, p, h->caplen);
if(unlikely(automa != NULL)) {
if((h->caplen > 42 /* FIX: do proper parsing */)
&& (search_string((char*)&p[42], h->caplen-42) == 1)) {
stats->numStringMatches[threadId]++;
} else {
dump_match = 0;
}
}
if(unlikely(add_drop_rule)) {
if(!h->ts.tv_sec) pfring_parse_pkt((u_char*)p, (struct pfring_pkthdr*)h, 4, 0, 1);
if (h->extended_hdr.parsed_pkt.offset.l4_offset) /* IP packet */
drop_packet_rule(h);
}
if (dumper) {
if(unlikely(do_close_dump)) openDump();
if (dumper) {
if (!h->ts.tv_sec) gettimeofday(&((struct pfring_pkthdr *) h)->ts, NULL);
pcap_dump((u_char*)dumper, (struct pcap_pkthdr*)h, p);
pcap_dump_flush(dumper);
}
}
if(unlikely(verbose || dump_match)) {
print_packet(h, p, dump_match);
}
if (unlikely(num_packets && num_packets == stats->numPkts[threadId]))
sigproc(0);
}
/* *************************************** */
void printDevs() {
pfring_if_t *dev;
int i = 0;
dev = pfring_findalldevs();
if (verbose)
printf("Name\tSystemName\tModule\tMAC\tBusID\tNumaNode\tStatus\tLicense\n");
else
printf("Available devices (-i):\n");
while (dev != NULL) {
if (verbose) {
printf("%s\t%s\t%s\t",
dev->name, dev->system_name ? dev->system_name : "unknown", dev->module);
if (dev->sn)
printf("%s", dev->sn);
else
printf("%02X:%02X:%02X:%02X:%02X:%02X",
dev->mac[0] & 0xFF, dev->mac[1] & 0xFF, dev->mac[2] & 0xFF,
dev->mac[3] & 0xFF, dev->mac[4] & 0xFF, dev->mac[5] & 0xFF);
printf("\t%04X:%02X:%02X.%X\t%d\t%s\t%s\n",
dev->bus_id.slot, dev->bus_id.bus, dev->bus_id.device, dev->bus_id.function,
busid2node(dev->bus_id.slot, dev->bus_id.bus, dev->bus_id.device, dev->bus_id.function),
dev->status ? "Up" : "Down", dev->license ? "Valid" : "NotFound");
} else {
printf(" %d. %s\n", i++, dev->name);
}
dev = dev->next;
}
}
/* *************************************** */
void printHelp(void) {
printf("pfcount - (C) 2005-2019 ntop.org\n\n");
printf("-h Print this help\n");
printf("-i <device> Device name. Use:\n"
" - ethX@Y for channels\n"
" - zc:ethX for ZC devices\n"
" - sysdig: for capturing sysdig events\n"
#ifdef HAVE_DAG
" - dag:dagX:Y for Endace DAG cards\n"
#endif
);
printf("-n <threads> Number of polling threads (default %d)\n", num_threads);
printf("-f <filter> BPF filter\n");
printf("-e <direction> 0=RX+TX, 1=RX only, 2=TX only\n");
printf("-l <len> Capture length\n");
printf("-g <core_id> Bind this app to a core\n");
printf("-d <device> Device on which incoming packets are copied\n");
printf("-w <watermark> Watermark\n");
printf("-p <poll wait> Poll wait (msec)\n");
printf("-b <cpu %%> CPU pergentage priority (0-99)\n");
printf("-a Active packet wait\n");
printf("-N <num> Read <num> packets and exit\n");
printf("-q Force printing packets as sysdig events with -v\n");
printf("-m Long packet header (with PF_RING extensions)\n");
printf("-r Rehash RSS packets\n");
printf("-c <cluster id> Cluster ID (kernel clustering)\n");
printf("-H <cluster hash> Cluster hash type (kernel clustering)\n"
" %d - src ip, dst ip \n"
" %d - src ip, src port, dst ip, dst port\n"
" %d - src ip, src port, dst ip, dst port, proto (default)\n"
" %d - src ip, src port, dst ip, dst port, proto, vlan\n"
" %d - src ip, src port, dst ip, dst port, proto for TCP, src ip, dst ip otherwise\n"
" %d - tunneled src ip, dst ip\n"
" %d - tunneled src ip, src port, dst ip, dst port\n"
" %d - tunneled src ip, src port, dst ip, dst port, proto (default)\n"
" %d - tunneled src ip, src port, dst ip, dst port, proto, vlan\n"
" %d - tunneled src ip, src port, dst ip, dst port, proto for TCP, src ip, dst ip otherwise\n"
" %d - round-robin\n",
cluster_per_flow_2_tuple, cluster_per_flow_4_tuple,
cluster_per_flow_5_tuple, cluster_per_flow,
cluster_per_flow_tcp_5_tuple,
cluster_per_inner_flow_2_tuple, cluster_per_inner_flow_4_tuple,
cluster_per_inner_flow_5_tuple, cluster_per_inner_flow,
cluster_per_inner_flow_tcp_5_tuple,
cluster_round_robin);
printf("-s Enable hw timestamping\n");
printf("-S Do not strip hw timestamps (if present)\n");
printf("-t Touch payload (to force packet load on cache)\n");
printf("-M Packet memcpy (to test memcpy speed)\n");
printf("-C <mode> Work with the adapter in chunk mode (1=chunk API, 2=packet API)\n");
printf("-T Check packet timestamps\n");
printf("-x <path> File containing strings to search string (case sensitive) on payload.\n");
printf("-o <path> Dump packets on the specified pcap (in case of -x this dumps only matching packets)\n");
printf("-u <1|2> For each incoming packet add a drop rule (1=hash, 2=wildcard rule)\n");
printf("-v <mode> Verbose [1: verbose, 2: very verbose (print packet payload)]\n");
printf("-z <mode> Enabled hw timestamping/stripping. Currently the supported TS mode are:\n"
" ixia\tTimestamped packets by ixiacom.com hardware devices\n");
printf("-L List all interfaces and exit (use -v for more info)\n");
}
/* *************************************** */
void* packet_consumer_thread(void* _id) {
long thread_id = (long)_id;
u_int numCPU = sysconf( _SC_NPROCESSORS_ONLN );
u_char buffer[NO_ZC_BUFFER_LEN];
u_char *buffer_p = buffer;
u_long core_id = thread_id % numCPU;
struct pfring_pkthdr hdr;
/* printf("packet_consumer_thread(%lu)\n", thread_id); */
if((num_threads > 1) && (numCPU > 1)) {
if(bind2core(core_id) == 0)
if (!quiet)
printf("Set thread %lu on core %lu/%u\n", thread_id, core_id, numCPU);
}
memset(&hdr, 0, sizeof(hdr));
while(1) {
int rc;
u_int len;
if(stats->do_shutdown) break;
if((rc = pfring_recv(pd, &buffer_p, NO_ZC_BUFFER_LEN, &hdr, wait_for_packet)) > 0) {
if(stats->do_shutdown) break;
dummyProcessPacket(&hdr, buffer, (u_char*)thread_id);
#ifdef TEST_SEND
buffer[0] = 0x99;
buffer[1] = 0x98;
buffer[2] = 0x97;
pfring_send(pd, buffer, hdr.caplen);
#endif
} else {
if(wait_for_packet == 0) sched_yield();
}
if(0) {
struct simple_stats {
u_int64_t num_pkts, num_bytes;
};
struct simple_stats stats;
len = sizeof(stats);
rc = pfring_get_filtering_rule_stats(pd, 5, (char*)&stats, &len);
if(rc < 0)
fprintf(stderr, "pfring_get_filtering_rule_stats() failed [rc=%d]\n", rc);
else {
if (!quiet)
printf("[Pkts=%u][Bytes=%u]\n",
(unsigned int)stats.num_pkts,
(unsigned int)stats.num_bytes);
}
}
}
return(NULL);
}
/* *************************************** */
void* chunk_consumer_thread(void* _id) {
long thread_id = (long)_id;
u_int numCPU = sysconf( _SC_NPROCESSORS_ONLN );
void *chunk_p = NULL;
pfring_chunk_info chunk_info;
u_long core_id = thread_id % numCPU;
struct pfring_pkthdr hdr;
/* printf("packet_consumer_thread(%lu)\n", thread_id); */
if((num_threads > 1) && (numCPU > 1)) {
if(bind2core(core_id) == 0)
if (!quiet)
printf("Set thread %lu on core %lu/%u\n", thread_id, core_id, numCPU);
}
memset(&hdr, 0, sizeof(hdr));
while(1) {
if(stats->do_shutdown) break;
if(pfring_recv_chunk(pd, &chunk_p, &chunk_info, wait_for_packet) > 0) {
if(stats->do_shutdown) break;
stats->numPkts[thread_id]++, stats->numBytes[thread_id] += chunk_info.length;
} else {
if(wait_for_packet == 0) sched_yield();
}
}
return(NULL);
}
/* *************************************** */
static int ac_match_handler(AC_MATCH_t *m, void *param) {
int *matching_protocol_id = (int*)param;
*matching_protocol_id = 1;
return 1; /* 0 to continue searching, !0 to stop */
}
/* *************************************** */
static void add_string_to_automa(char *value) {
AC_PATTERN_t ac_pattern;
if (!quiet)
printf("Adding string '%s' [id %u] to search list...\n", value, string_id);
ac_pattern.astring = value, ac_pattern.rep.number = string_id++;
ac_pattern.length = strlen(ac_pattern.astring);
ac_automata_add(((AC_AUTOMATA_t*)automa), &ac_pattern);
}
/* *************************************** */
static void load_strings(char *path) {
FILE *f = fopen(path,"r");
char *s, buf[256] = { 0 };
if(f == NULL) {
fprintf(stderr, "Unable to open file %s\n", path);
exit(-1);
}
automa = ac_automata_init(ac_match_handler);
while((s = fgets(buf, sizeof(buf)-1, f)) != NULL) {
if((s[0] != '\0')
&& (s[0] != '\n')
&& (s[0] != '#')
&& (s[0] != '\r')) {
struct strmatch *m = (struct strmatch*)malloc(sizeof(struct strmatch));
s[strlen(s)-1] = '\0';
add_string_to_automa(s);
if(m) {
m->next = matching_strings;
m->str = strdup(s);
matching_strings = m;
}
}
}
ac_automata_finalize((AC_AUTOMATA_t*)automa);
fclose(f);
}
/* *************************************** */
void openDump() {
static u_int dump_id = 0;
char path[256];
dump_id++;
if (strcmp(out_pcap_file, "-") != 0)
snprintf(path, sizeof(path), "%s.%u", out_pcap_file, dump_id);
else
snprintf(path, sizeof(path), "-");
if(dumper != NULL) {
pcap_dump_close(dumper);
dumper = NULL;
}
if(match_dumper != NULL) {
fclose(match_dumper);
match_dumper = NULL;
}
dumper = pcap_dump_open(pcap_open_dead(DLT_EN10MB, 16384 /* MTU */), path);
if(dumper == NULL)
fprintf(stderr, "Unable to create dump file %s\n", path);
else {
if(automa != NULL) {
snprintf(path, sizeof(path), "%s.log.%u", out_pcap_file, dump_id);
match_dumper = fopen(path, "w");
if(match_dumper == NULL)
fprintf(stderr, "Unable to create dump log file %s\n", path);
}
}
do_close_dump = 0;
}
/* *************************************** */
void dumpMatch(char *str) {
if(match_dumper != NULL) {
fprintf(match_dumper, "%s", str);
fflush(match_dumper);
}
}
/* *************************************** */
void handleSigHup(int signalId) {
do_close_dump = 1;
}
/* *************************************** */
#define MAX_NUM_STRINGS 32
int main(int argc, char* argv[]) {
char *device = NULL, c, buf[32], path[256] = { 0 }, *reflector_device = NULL;
u_char mac_address[6] = { 0 };
int promisc, snaplen = DEFAULT_SNAPLEN, rc;
u_int clusterId = 0;
u_int8_t enable_ixia_timestamp = 0, list_interfaces = 0;
u_int32_t flags = 0;
int bind_core = -1;
packet_direction direction = rx_and_tx_direction;
u_int16_t watermark = 0, poll_duration = 0,
cpu_percentage = 0, rehash_rss = 0;
char *bpfFilter = NULL;
cluster_type cluster_hash_type = cluster_per_flow_5_tuple;
startTime.tv_sec = 0;
thiszone = gmt_to_local(0);
while((c = getopt(argc,argv,"hi:c:C:d:H:l:Lv:ae:n:w:o:p:qb:rg:u:mtsSx:f:z:N:MT")) != '?') {
if((c == 255) || (c == -1)) break;
switch(c) {
case 'h':
printHelp();
exit(0);
break;
case 'a':
wait_for_packet = 0;
break;
case 'e':
switch(atoi(optarg)) {
case rx_and_tx_direction:
case rx_only_direction:
case tx_only_direction:
direction = atoi(optarg);
break;
}
break;
case 'c':
clusterId = atoi(optarg);
break;
case 'C':
chunk_mode = atoi(optarg);
break;
case 'd':
reflector_device = strdup(optarg);
break;
case 'H':
switch (atoi(optarg)) {
case cluster_per_flow_2_tuple:
case cluster_per_flow_4_tuple:
case cluster_per_flow_5_tuple:
case cluster_per_flow:
case cluster_per_flow_tcp_5_tuple:
case cluster_round_robin:
cluster_hash_type = atoi(optarg); break;
default: fprintf(stderr, "WARNING: Invalid hash type %u\n", atoi(optarg)); break;
}
break;
case 'l':
snaplen = atoi(optarg);
break;
case 'L':
list_interfaces = 1;
break;
case 'i':
device = strdup(optarg);
if(strcmp(device, "sysdig:") == 0) is_sysdig = 1;
break;
case 'n':
num_threads = atoi(optarg);
break;
case 'v':
if(optarg[0] == '1')
verbose = 1;
else if(optarg[0] == '2')
verbose = 2;