static void enter_mode_read_pcap(struct mode *mode)
{
int ret, fd;
struct pcap_pkthdr phdr;
struct sock_fprog bpf_ops;
struct tx_stats stats;
struct frame_map fm;
uint8_t *out;
size_t out_len;
if (!pcap_ops[mode->pcap])
panic("pcap group not supported!\n");
fd = open_or_die(mode->device_in, O_RDONLY | O_LARGEFILE | O_NOATIME);
ret = pcap_ops[mode->pcap]->pull_file_header(fd);
if (ret)
panic("error reading pcap header!\n");
if (pcap_ops[mode->pcap]->prepare_reading_pcap) {
ret = pcap_ops[mode->pcap]->prepare_reading_pcap(fd);
if (ret)
panic("error prepare reading pcap!\n");
}
memset(&fm, 0, sizeof(fm));
memset(&bpf_ops, 0, sizeof(bpf_ops));
memset(&stats, 0, sizeof(stats));
bpf_parse_rules(mode->filter, &bpf_ops);
dissector_init_all(mode->print_mode);
out_len = device_mtu("lo");
out = xmalloc_aligned(out_len, 64);
printf("BPF:\n");
bpf_dump_all(&bpf_ops);
printf("MD: RD %s\n\n", pcap_ops[mode->pcap]->name);
while (likely(sigint == 0)) {
do {
ret = pcap_ops[mode->pcap]->read_pcap_pkt(fd, &phdr,
out, out_len);
if (unlikely(ret <= 0))
goto out;
} while (mode->filter && !bpf_run_filter(&bpf_ops, out, phdr.len));
pcap_pkthdr_to_tpacket_hdr(&phdr, &fm.tp_h);
stats.tx_bytes += fm.tp_h.tp_len;;
stats.tx_packets++;
show_frame_hdr(&fm, mode->print_mode, RING_MODE_EGRESS);
dissector_entry_point(out, fm.tp_h.tp_snaplen,
mode->link_type);
if (frame_cnt_max != 0 &&
stats.tx_packets >= frame_cnt_max) {
sigint = 1;
break;
}
}
out:
fflush(stdout);
printf("\n");
printf("\r%12lu frames outgoing\n", stats.tx_packets);
printf("\r%12lu bytes outgoing\n", stats.tx_bytes);
xfree(out);
dissector_cleanup_all();
if (pcap_ops[mode->pcap]->prepare_close_pcap)
pcap_ops[mode->pcap]->prepare_close_pcap(fd, PCAP_MODE_READ);
close(fd);
}
static void read_pcap(struct ctx *ctx)
{
__label__ out;
uint8_t *out;
int ret, fd, fdo = 0;
unsigned long trunced = 0;
size_t out_len;
pcap_pkthdr_t phdr;
struct sock_fprog bpf_ops;
struct frame_map fm;
struct timeval start, end, diff;
struct sockaddr_ll sll;
bug_on(!__pcap_io);
if (!strncmp("-", ctx->device_in, strlen("-"))) {
fd = dup_or_die(fileno(stdin));
close(fileno(stdin));
if (ctx->pcap == PCAP_OPS_MM)
ctx->pcap = PCAP_OPS_SG;
} else {
fd = open_or_die(ctx->device_in, O_RDONLY | O_LARGEFILE | O_NOATIME);
}
if (__pcap_io->init_once_pcap)
__pcap_io->init_once_pcap();
ret = __pcap_io->pull_fhdr_pcap(fd, &ctx->magic, &ctx->link_type);
if (ret)
panic("Error reading pcap header!\n");
if (__pcap_io->prepare_access_pcap) {
ret = __pcap_io->prepare_access_pcap(fd, PCAP_MODE_RD, ctx->jumbo);
if (ret)
panic("Error prepare reading pcap!\n");
}
fmemset(&fm, 0, sizeof(fm));
fmemset(&bpf_ops, 0, sizeof(bpf_ops));
bpf_parse_rules(ctx->filter, &bpf_ops, ctx->link_type);
if (ctx->dump_bpf)
bpf_dump_all(&bpf_ops);
dissector_init_all(ctx->print_mode);
out_len = round_up(1024 * 1024, PAGE_SIZE);
out = xmalloc_aligned(out_len, CO_CACHE_LINE_SIZE);
if (ctx->device_out) {
if (!strncmp("-", ctx->device_out, strlen("-"))) {
fdo = dup_or_die(fileno(stdout));
close(fileno(stdout));
} else {
fdo = open_or_die_m(ctx->device_out, O_RDWR | O_CREAT |
O_TRUNC | O_LARGEFILE, DEFFILEMODE);
}
}
drop_privileges(ctx->enforce, ctx->uid, ctx->gid);
printf("Running! Hang up with ^C!\n\n");
fflush(stdout);
bug_on(gettimeofday(&start, NULL));
while (likely(sigint == 0)) {
do {
ret = __pcap_io->read_pcap(fd, &phdr, ctx->magic,
out, out_len);
if (unlikely(ret < 0))
goto out;
if (unlikely(pcap_get_length(&phdr, ctx->magic) == 0)) {
trunced++;
continue;
}
if (unlikely(pcap_get_length(&phdr, ctx->magic) > out_len)) {
pcap_set_length(&phdr, ctx->magic, out_len);
trunced++;
}
} while (ctx->filter &&
!bpf_run_filter(&bpf_ops, out,
pcap_get_length(&phdr, ctx->magic)));
pcap_pkthdr_to_tpacket_hdr(&phdr, ctx->magic, &fm.tp_h, &sll);
ctx->tx_bytes += fm.tp_h.tp_len;
ctx->tx_packets++;
show_frame_hdr(&fm, ctx->print_mode);
dissector_entry_point(out, fm.tp_h.tp_snaplen,
ctx->link_type, ctx->print_mode);
if (ctx->device_out)
translate_pcap_to_txf(fdo, out, fm.tp_h.tp_snaplen);
if (frame_count_max != 0) {
if (ctx->tx_packets >= frame_count_max) {
sigint = 1;
break;
}
}
}
out:
bug_on(gettimeofday(&end, NULL));
timersub(&end, &start, &diff);
bpf_release(&bpf_ops);
dissector_cleanup_all();
if (__pcap_io->prepare_close_pcap)
__pcap_io->prepare_close_pcap(fd, PCAP_MODE_RD);
xfree(out);
fflush(stdout);
printf("\n");
printf("\r%12lu packets outgoing\n", ctx->tx_packets);
printf("\r%12lu packets truncated in file\n", trunced);
printf("\r%12lu bytes outgoing\n", ctx->tx_bytes);
printf("\r%12lu sec, %lu usec in total\n", diff.tv_sec, diff.tv_usec);
if (!strncmp("-", ctx->device_in, strlen("-")))
dup2(fd, fileno(stdin));
close(fd);
if (ctx->device_out) {
if (!strncmp("-", ctx->device_out, strlen("-")))
dup2(fdo, fileno(stdout));
close(fdo);
}
}
static void enter_mode_pcap_to_tx(struct mode *mode)
{
int irq, ifindex, fd = 0, ret;
unsigned int size, it = 0;
struct ring tx_ring;
struct frame_map *hdr;
struct sock_fprog bpf_ops;
struct tx_stats stats;
uint8_t *out = NULL;
if (!device_up_and_running(mode->device_out))
panic("Device not up and running!\n");
set_memcpy();
tx_sock = pf_socket();
if (!pcap_ops[mode->pcap])
panic("pcap group not supported!\n");
fd = open_or_die(mode->device_in, O_RDONLY | O_LARGEFILE | O_NOATIME);
ret = pcap_ops[mode->pcap]->pull_file_header(fd);
if (ret)
panic("error reading pcap header!\n");
if (pcap_ops[mode->pcap]->prepare_reading_pcap) {
ret = pcap_ops[mode->pcap]->prepare_reading_pcap(fd);
if (ret)
panic("error prepare reading pcap!\n");
}
memset(&tx_ring, 0, sizeof(tx_ring));
memset(&bpf_ops, 0, sizeof(bpf_ops));
memset(&stats, 0, sizeof(stats));
ifindex = device_ifindex(mode->device_out);
size = ring_size(mode->device_out, mode->reserve_size);
bpf_parse_rules(mode->filter, &bpf_ops);
set_packet_loss_discard(tx_sock);
setup_tx_ring_layout(tx_sock, &tx_ring, size, mode->jumbo_support);
create_tx_ring(tx_sock, &tx_ring);
mmap_tx_ring(tx_sock, &tx_ring);
alloc_tx_ring_frames(&tx_ring);
bind_tx_ring(tx_sock, &tx_ring, ifindex);
dissector_init_all(mode->print_mode);
if (mode->cpu >= 0 && ifindex > 0) {
irq = device_irq_number(mode->device_out);
device_bind_irq_to_cpu(mode->cpu, irq);
printf("IRQ: %s:%d > CPU%d\n", mode->device_out, irq,
mode->cpu);
}
if (mode->kpull)
interval = mode->kpull;
itimer.it_interval.tv_sec = 0;
itimer.it_interval.tv_usec = interval;
itimer.it_value.tv_sec = 0;
itimer.it_value.tv_usec = interval;
setitimer(ITIMER_REAL, &itimer, NULL);
printf("BPF:\n");
bpf_dump_all(&bpf_ops);
printf("MD: TX %luus %s\n\n", interval, pcap_ops[mode->pcap]->name);
while (likely(sigint == 0)) {
while (user_may_pull_from_tx(tx_ring.frames[it].iov_base)) {
struct pcap_pkthdr phdr;
hdr = tx_ring.frames[it].iov_base;
/* Kernel assumes: data = ph.raw + po->tp_hdrlen -
* sizeof(struct sockaddr_ll); */
out = ((uint8_t *) hdr) + TPACKET_HDRLEN -
sizeof(struct sockaddr_ll);
do {
ret = pcap_ops[mode->pcap]->read_pcap_pkt(fd, &phdr,
out, ring_frame_size(&tx_ring));
if (unlikely(ret <= 0))
goto out;
} while (mode->filter && !bpf_run_filter(&bpf_ops, out, phdr.len));
pcap_pkthdr_to_tpacket_hdr(&phdr, &hdr->tp_h);
stats.tx_bytes += hdr->tp_h.tp_len;;
stats.tx_packets++;
show_frame_hdr(hdr, mode->print_mode, RING_MODE_EGRESS);
dissector_entry_point(out, hdr->tp_h.tp_snaplen,
mode->link_type);
kernel_may_pull_from_tx(&hdr->tp_h);
next_slot(&it, &tx_ring);
if (unlikely(sigint == 1))
break;
if (frame_cnt_max != 0 &&
stats.tx_packets >= frame_cnt_max) {
sigint = 1;
break;
}
}
}
out:
fflush(stdout);
printf("\n");
printf("\r%12lu frames outgoing\n", stats.tx_packets);
printf("\r%12lu bytes outgoing\n", stats.tx_bytes);
dissector_cleanup_all();
destroy_tx_ring(tx_sock, &tx_ring);
close(tx_sock);
if (pcap_ops[mode->pcap]->prepare_close_pcap)
pcap_ops[mode->pcap]->prepare_close_pcap(fd, PCAP_MODE_READ);
close(fd);
}
static void pcap_to_xmit(struct ctx *ctx)
{
__label__ out;
uint8_t *out = NULL;
int irq, ifindex, fd = 0, ret;
unsigned int size, it = 0;
unsigned long trunced = 0;
struct ring tx_ring;
struct frame_map *hdr;
struct sock_fprog bpf_ops;
struct timeval start, end, diff;
pcap_pkthdr_t phdr;
if (!device_up_and_running(ctx->device_out) && !ctx->rfraw)
panic("Device not up and running!\n");
bug_on(!__pcap_io);
tx_sock = pf_socket();
if (!strncmp("-", ctx->device_in, strlen("-"))) {
fd = dup_or_die(fileno(stdin));
close(fileno(stdin));
if (ctx->pcap == PCAP_OPS_MM)
ctx->pcap = PCAP_OPS_SG;
} else {
fd = open_or_die(ctx->device_in, O_RDONLY | O_LARGEFILE | O_NOATIME);
}
if (__pcap_io->init_once_pcap)
__pcap_io->init_once_pcap();
ret = __pcap_io->pull_fhdr_pcap(fd, &ctx->magic, &ctx->link_type);
if (ret)
panic("Error reading pcap header!\n");
if (__pcap_io->prepare_access_pcap) {
ret = __pcap_io->prepare_access_pcap(fd, PCAP_MODE_RD, ctx->jumbo);
if (ret)
panic("Error prepare reading pcap!\n");
}
fmemset(&tx_ring, 0, sizeof(tx_ring));
fmemset(&bpf_ops, 0, sizeof(bpf_ops));
if (ctx->rfraw) {
ctx->device_trans = xstrdup(ctx->device_out);
xfree(ctx->device_out);
enter_rfmon_mac80211(ctx->device_trans, &ctx->device_out);
if (ctx->link_type != LINKTYPE_IEEE802_11)
panic("Wrong linktype of pcap!\n");
}
ifindex = device_ifindex(ctx->device_out);
size = ring_size(ctx->device_out, ctx->reserve_size);
bpf_parse_rules(ctx->filter, &bpf_ops, ctx->link_type);
if (ctx->dump_bpf)
bpf_dump_all(&bpf_ops);
set_packet_loss_discard(tx_sock);
setup_tx_ring_layout(tx_sock, &tx_ring, size, ctx->jumbo);
create_tx_ring(tx_sock, &tx_ring, ctx->verbose);
mmap_tx_ring(tx_sock, &tx_ring);
alloc_tx_ring_frames(tx_sock, &tx_ring);
bind_tx_ring(tx_sock, &tx_ring, ifindex);
dissector_init_all(ctx->print_mode);
if (ctx->cpu >= 0 && ifindex > 0) {
irq = device_irq_number(ctx->device_out);
device_set_irq_affinity(irq, ctx->cpu);
if (ctx->verbose)
printf("IRQ: %s:%d > CPU%d\n",
ctx->device_out, irq, ctx->cpu);
}
if (ctx->kpull)
interval = ctx->kpull;
set_itimer_interval_value(&itimer, 0, interval);
setitimer(ITIMER_REAL, &itimer, NULL);
drop_privileges(ctx->enforce, ctx->uid, ctx->gid);
printf("Running! Hang up with ^C!\n\n");
fflush(stdout);
bug_on(gettimeofday(&start, NULL));
while (likely(sigint == 0)) {
while (user_may_pull_from_tx(tx_ring.frames[it].iov_base)) {
hdr = tx_ring.frames[it].iov_base;
out = ((uint8_t *) hdr) + TPACKET2_HDRLEN - sizeof(struct sockaddr_ll);
do {
ret = __pcap_io->read_pcap(fd, &phdr, ctx->magic, out,
ring_frame_size(&tx_ring));
if (unlikely(ret <= 0))
goto out;
if (ring_frame_size(&tx_ring) <
pcap_get_length(&phdr, ctx->magic)) {
pcap_set_length(&phdr, ctx->magic,
ring_frame_size(&tx_ring));
trunced++;
}
} while (ctx->filter &&
!bpf_run_filter(&bpf_ops, out,
pcap_get_length(&phdr, ctx->magic)));
pcap_pkthdr_to_tpacket_hdr(&phdr, ctx->magic, &hdr->tp_h, &hdr->s_ll);
ctx->tx_bytes += hdr->tp_h.tp_len;;
ctx->tx_packets++;
show_frame_hdr(hdr, ctx->print_mode);
dissector_entry_point(out, hdr->tp_h.tp_snaplen,
ctx->link_type, ctx->print_mode);
kernel_may_pull_from_tx(&hdr->tp_h);
it++;
if (it >= tx_ring.layout.tp_frame_nr)
it = 0;
if (unlikely(sigint == 1))
break;
if (frame_count_max != 0) {
if (ctx->tx_packets >= frame_count_max) {
sigint = 1;
break;
}
}
}
}
out:
bug_on(gettimeofday(&end, NULL));
timersub(&end, &start, &diff);
timer_purge();
bpf_release(&bpf_ops);
dissector_cleanup_all();
destroy_tx_ring(tx_sock, &tx_ring);
if (ctx->rfraw)
leave_rfmon_mac80211(ctx->device_trans, ctx->device_out);
if (__pcap_io->prepare_close_pcap)
__pcap_io->prepare_close_pcap(fd, PCAP_MODE_RD);
if (!strncmp("-", ctx->device_in, strlen("-")))
dup2(fd, fileno(stdin));
close(fd);
close(tx_sock);
fflush(stdout);
printf("\n");
printf("\r%12lu packets outgoing\n", ctx->tx_packets);
printf("\r%12lu packets truncated in file\n", trunced);
printf("\r%12lu bytes outgoing\n", ctx->tx_bytes);
printf("\r%12lu sec, %lu usec in total\n", diff.tv_sec, diff.tv_usec);
}
static void read_pcap(struct ctx *ctx)
{
uint8_t *out;
int ret, fd, fdo = 0;
unsigned long trunced = 0;
size_t out_len;
pcap_pkthdr_t phdr;
struct sock_fprog bpf_ops;
struct frame_map fm;
struct timeval start, end, diff;
bool is_out_pcap = ctx->device_out && strstr(ctx->device_out, ".pcap");
const struct pcap_file_ops *pcap_out_ops = pcap_ops[PCAP_OPS_RW];
bug_on(!__pcap_io);
if (!strncmp("-", ctx->device_in, strlen("-"))) {
fd = dup_or_die(fileno(stdin));
close(fileno(stdin));
if (ctx->pcap == PCAP_OPS_MM)
ctx->pcap = PCAP_OPS_SG;
} else {
/* O_NOATIME requires privileges, in case we don't have
* them, retry without them at a minor cost of updating
* atime in case the fs has been mounted as such.
*/
fd = open(ctx->device_in, O_RDONLY | O_LARGEFILE | O_NOATIME);
if (fd < 0 && errno == EPERM)
fd = open_or_die(ctx->device_in, O_RDONLY | O_LARGEFILE);
if (fd < 0)
panic("Cannot open file %s! %s.\n", ctx->device_in,
strerror(errno));
}
if (__pcap_io->init_once_pcap)
__pcap_io->init_once_pcap(false);
ret = __pcap_io->pull_fhdr_pcap(fd, &ctx->magic, &ctx->link_type);
if (ret)
panic("Error reading pcap header!\n");
if (__pcap_io->prepare_access_pcap) {
ret = __pcap_io->prepare_access_pcap(fd, PCAP_MODE_RD, ctx->jumbo);
if (ret)
panic("Error prepare reading pcap!\n");
}
fmemset(&fm, 0, sizeof(fm));
bpf_parse_rules(ctx->filter, &bpf_ops, ctx->link_type);
if (ctx->dump_bpf)
bpf_dump_all(&bpf_ops);
dissector_init_all(ctx->print_mode);
out_len = round_up(1024 * 1024, RUNTIME_PAGE_SIZE);
out = xmalloc_aligned(out_len, CO_CACHE_LINE_SIZE);
if (ctx->device_out) {
if (!strncmp("-", ctx->device_out, strlen("-"))) {
fdo = dup_or_die(fileno(stdout));
close(fileno(stdout));
} else {
fdo = open_or_die_m(ctx->device_out, O_RDWR | O_CREAT |
O_TRUNC | O_LARGEFILE, DEFFILEMODE);
}
}
if (is_out_pcap) {
ret = pcap_out_ops->push_fhdr_pcap(fdo, ctx->magic,
ctx->link_type);
if (ret)
panic("Error writing pcap header!\n");
}
drop_privileges(ctx->enforce, ctx->uid, ctx->gid);
printf("Running! Hang up with ^C!\n\n");
fflush(stdout);
bug_on(gettimeofday(&start, NULL));
while (likely(sigint == 0)) {
do {
ret = __pcap_io->read_pcap(fd, &phdr, ctx->magic,
out, out_len);
if (unlikely(ret < 0))
goto out;
if (unlikely(pcap_get_length(&phdr, ctx->magic) == 0)) {
trunced++;
continue;
}
if (unlikely(pcap_get_length(&phdr, ctx->magic) > out_len)) {
pcap_set_length(&phdr, ctx->magic, out_len);
trunced++;
}
} while (ctx->filter &&
!bpf_run_filter(&bpf_ops, out,
pcap_get_length(&phdr, ctx->magic)));
pcap_pkthdr_to_tpacket_hdr(&phdr, ctx->magic, &fm.tp_h, &fm.s_ll);
ctx->tx_bytes += fm.tp_h.tp_len;
ctx->tx_packets++;
show_frame_hdr(out, fm.tp_h.tp_snaplen, ctx->link_type, &fm,
ctx->print_mode, ctx->tx_packets);
dissector_entry_point(out, fm.tp_h.tp_snaplen,
ctx->link_type, ctx->print_mode,
&fm.s_ll);
if (is_out_pcap) {
size_t pcap_len = pcap_get_length(&phdr, ctx->magic);
int wlen = pcap_out_ops->write_pcap(fdo, &phdr,
ctx->magic, out,
pcap_len);
if (unlikely(wlen != (int)pcap_get_total_length(&phdr, ctx->magic)))
panic("Error writing to pcap!\n");
} else if (ctx->device_out) {
translate_pcap_to_txf(fdo, out, fm.tp_h.tp_snaplen);
}
if (frame_count_max != 0) {
if (ctx->tx_packets >= frame_count_max) {
sigint = 1;
break;
}
}
}
out:
bug_on(gettimeofday(&end, NULL));
timersub(&end, &start, &diff);
bpf_release(&bpf_ops);
dissector_cleanup_all();
if (__pcap_io->prepare_close_pcap)
__pcap_io->prepare_close_pcap(fd, PCAP_MODE_RD);
xfree(out);
fflush(stdout);
printf("\n");
printf("\r%12lu packets outgoing\n", ctx->tx_packets);
printf("\r%12lu packets truncated in file\n", trunced);
printf("\r%12lu bytes outgoing\n", ctx->tx_bytes);
printf("\r%12lu sec, %lu usec in total\n", diff.tv_sec, diff.tv_usec);
if (!strncmp("-", ctx->device_in, strlen("-")))
dup2(fd, fileno(stdin));
close(fd);
if (ctx->device_out) {
if (!strncmp("-", ctx->device_out, strlen("-")))
dup2(fdo, fileno(stdout));
close(fdo);
}
}
static void enter_mode_read_pcap(struct mode *mode)
{
int ret, fd, fdo = 0;
struct pcap_pkthdr phdr;
struct sock_fprog bpf_ops;
struct tx_stats stats;
struct frame_map fm;
uint8_t *out;
size_t out_len;
unsigned long trunced = 0;
struct timeval start, end, diff;
if (!pcap_ops[mode->pcap])
panic("pcap group not supported!\n");
fd = open_or_die(mode->device_in, O_RDONLY | O_LARGEFILE | O_NOATIME);
ret = pcap_ops[mode->pcap]->pull_file_header(fd, &mode->link_type);
if (ret)
panic("error reading pcap header!\n");
if (pcap_ops[mode->pcap]->prepare_reading_pcap) {
ret = pcap_ops[mode->pcap]->prepare_reading_pcap(fd);
if (ret)
panic("error prepare reading pcap!\n");
}
fmemset(&fm, 0, sizeof(fm));
fmemset(&bpf_ops, 0, sizeof(bpf_ops));
fmemset(&stats, 0, sizeof(stats));
bpf_parse_rules(mode->filter, &bpf_ops);
dissector_init_all(mode->print_mode);
out_len = 64 * 1024;
out = xmalloc_aligned(out_len, CO_CACHE_LINE_SIZE);
printf("BPF:\n");
bpf_dump_all(&bpf_ops);
printf("MD: RD %s ", pcap_ops[mode->pcap]->name);
#ifdef _LARGEFILE64_SOURCE
printf("lf64 ");
#endif
ioprio_print();
printf("\n");
if (mode->device_out) {
fdo = open_or_die_m(mode->device_out, O_RDWR | O_CREAT |
O_TRUNC | O_LARGEFILE, S_IRUSR | S_IWUSR);
}
gettimeofday(&start, NULL);
while (likely(sigint == 0)) {
do {
memset(&phdr, 0, sizeof(phdr));
ret = pcap_ops[mode->pcap]->read_pcap_pkt(fd, &phdr,
out, out_len);
if (unlikely(ret < 0))
goto out;
if (unlikely(phdr.len == 0)) {
trunced++;
continue;
}
if (unlikely(phdr.len > out_len)) {
phdr.len = out_len;
trunced++;
}
} while (mode->filter &&
!bpf_run_filter(&bpf_ops, out, phdr.len));
pcap_pkthdr_to_tpacket_hdr(&phdr, &fm.tp_h);
stats.tx_bytes += fm.tp_h.tp_len;
stats.tx_packets++;
show_frame_hdr(&fm, mode->print_mode, RING_MODE_EGRESS);
dissector_entry_point(out, fm.tp_h.tp_snaplen,
mode->link_type, mode->print_mode);
if (mode->device_out) {
int i = 0;
char bout[80];
slprintf(bout, sizeof(bout), "{\n ");
write_or_die(fdo, bout, strlen(bout));
while (i < fm.tp_h.tp_snaplen) {
slprintf(bout, sizeof(bout), "0x%02x, ", out[i]);
write_or_die(fdo, bout, strlen(bout));
i++;
if (i % 10 == 0) {
slprintf(bout, sizeof(bout), "\n", out[i]);
write_or_die(fdo, bout, strlen(bout));
if (i < fm.tp_h.tp_snaplen) {
slprintf(bout, sizeof(bout), " ", out[i]);
write_or_die(fdo, bout, strlen(bout));
}
}
}
if (i % 10 != 0) {
slprintf(bout, sizeof(bout), "\n");
write_or_die(fdo, bout, strlen(bout));
}
slprintf(bout, sizeof(bout), "}\n\n");
write_or_die(fdo, bout, strlen(bout));
}
if (frame_cnt_max != 0 &&
stats.tx_packets >= frame_cnt_max) {
sigint = 1;
break;
}
}
out:
gettimeofday(&end, NULL);
diff = tv_subtract(end, start);
fflush(stdout);
printf("\n");
printf("\r%12lu frames outgoing\n", stats.tx_packets);
printf("\r%12lu frames truncated (larger than mtu)\n", trunced);
printf("\r%12lu bytes outgoing\n", stats.tx_bytes);
printf("\r%12lu sec, %lu usec in total\n", diff.tv_sec, diff.tv_usec);
xfree(out);
bpf_release(&bpf_ops);
dissector_cleanup_all();
if (pcap_ops[mode->pcap]->prepare_close_pcap)
pcap_ops[mode->pcap]->prepare_close_pcap(fd, PCAP_MODE_READ);
close(fd);
if (mode->device_out)
close(fdo);
}
static void enter_mode_pcap_to_tx(struct mode *mode)
{
int irq, ifindex, fd = 0, ret;
unsigned int size, it = 0;
struct ring tx_ring;
struct frame_map *hdr;
struct sock_fprog bpf_ops;
struct tx_stats stats;
uint8_t *out = NULL;
unsigned long trunced = 0;
struct timeval start, end, diff;
if (!device_up_and_running(mode->device_out))
panic("Device not up and running!\n");
tx_sock = pf_socket();
if (!pcap_ops[mode->pcap])
panic("pcap group not supported!\n");
fd = open_or_die(mode->device_in, O_RDONLY | O_LARGEFILE | O_NOATIME);
ret = pcap_ops[mode->pcap]->pull_file_header(fd, &mode->link_type);
if (ret)
panic("error reading pcap header!\n");
if (pcap_ops[mode->pcap]->prepare_reading_pcap) {
ret = pcap_ops[mode->pcap]->prepare_reading_pcap(fd);
if (ret)
panic("error prepare reading pcap!\n");
}
fmemset(&tx_ring, 0, sizeof(tx_ring));
fmemset(&bpf_ops, 0, sizeof(bpf_ops));
fmemset(&stats, 0, sizeof(stats));
if (mode->rfraw) {
mode->device_trans = xstrdup(mode->device_out);
xfree(mode->device_out);
enter_rfmon_mac80211(mode->device_trans, &mode->device_out);
if (mode->link_type != LINKTYPE_IEEE802_11)
panic("Wrong linktype of pcap!\n");
}
ifindex = device_ifindex(mode->device_out);
size = ring_size(mode->device_out, mode->reserve_size);
bpf_parse_rules(mode->filter, &bpf_ops);
set_packet_loss_discard(tx_sock);
set_sockopt_hwtimestamp(tx_sock, mode->device_out);
setup_tx_ring_layout(tx_sock, &tx_ring, size, mode->jumbo_support);
create_tx_ring(tx_sock, &tx_ring);
mmap_tx_ring(tx_sock, &tx_ring);
alloc_tx_ring_frames(&tx_ring);
bind_tx_ring(tx_sock, &tx_ring, ifindex);
dissector_init_all(mode->print_mode);
if (mode->cpu >= 0 && ifindex > 0) {
irq = device_irq_number(mode->device_out);
device_bind_irq_to_cpu(mode->cpu, irq);
printf("IRQ: %s:%d > CPU%d\n", mode->device_out, irq,
mode->cpu);
}
if (mode->kpull)
interval = mode->kpull;
itimer.it_interval.tv_sec = 0;
itimer.it_interval.tv_usec = interval;
itimer.it_value.tv_sec = 0;
itimer.it_value.tv_usec = interval;
setitimer(ITIMER_REAL, &itimer, NULL);
printf("BPF:\n");
bpf_dump_all(&bpf_ops);
printf("MD: TX %luus %s ", interval, pcap_ops[mode->pcap]->name);
if (mode->rfraw)
printf("802.11 raw via %s ", mode->device_out);
#ifdef _LARGEFILE64_SOURCE
printf("lf64 ");
#endif
ioprio_print();
printf("\n");
gettimeofday(&start, NULL);
while (likely(sigint == 0)) {
while (user_may_pull_from_tx(tx_ring.frames[it].iov_base)) {
struct pcap_pkthdr phdr;
hdr = tx_ring.frames[it].iov_base;
/* Kernel assumes: data = ph.raw + po->tp_hdrlen -
* sizeof(struct sockaddr_ll); */
out = ((uint8_t *) hdr) + TPACKET_HDRLEN -
sizeof(struct sockaddr_ll);
do {
memset(&phdr, 0, sizeof(phdr));
ret = pcap_ops[mode->pcap]->read_pcap_pkt(fd, &phdr,
out, ring_frame_size(&tx_ring));
if (unlikely(ret <= 0))
goto out;
if (ring_frame_size(&tx_ring) < phdr.len) {
phdr.len = ring_frame_size(&tx_ring);
trunced++;
}
} while (mode->filter && !bpf_run_filter(&bpf_ops, out, phdr.len));
pcap_pkthdr_to_tpacket_hdr(&phdr, &hdr->tp_h);
stats.tx_bytes += hdr->tp_h.tp_len;;
stats.tx_packets++;
show_frame_hdr(hdr, mode->print_mode, RING_MODE_EGRESS);
dissector_entry_point(out, hdr->tp_h.tp_snaplen,
mode->link_type, mode->print_mode);
kernel_may_pull_from_tx(&hdr->tp_h);
next_slot_prewr(&it, &tx_ring);
if (unlikely(sigint == 1))
break;
if (frame_cnt_max != 0 &&
stats.tx_packets >= frame_cnt_max) {
sigint = 1;
break;
}
}
}
out:
gettimeofday(&end, NULL);
diff = tv_subtract(end, start);
fflush(stdout);
printf("\n");
printf("\r%12lu frames outgoing\n", stats.tx_packets);
printf("\r%12lu frames truncated (larger than frame)\n", trunced);
printf("\r%12lu bytes outgoing\n", stats.tx_bytes);
printf("\r%12lu sec, %lu usec in total\n", diff.tv_sec, diff.tv_usec);
bpf_release(&bpf_ops);
dissector_cleanup_all();
destroy_tx_ring(tx_sock, &tx_ring);
if (mode->rfraw)
leave_rfmon_mac80211(mode->device_trans, mode->device_out);
close(tx_sock);
if (pcap_ops[mode->pcap]->prepare_close_pcap)
pcap_ops[mode->pcap]->prepare_close_pcap(fd, PCAP_MODE_READ);
close(fd);
}
static void enter_mode_pcap_to_tx(struct mode *mode)
{
int irq, ifindex, fd = 0, ret;
unsigned int size, it = 0;
struct ring tx_ring;
struct frame_map *hdr;
struct sock_fprog bpf_ops;
struct tx_stats stats;
uint8_t *out = NULL;
unsigned long trunced = 0;
struct timeval start, end, diff;
int filen = 0;
struct pcap_timeval *pcap_time;
/*
if (!device_up_and_running(mode->device_out))
panic("Device not up and running!\n");
*/
if (!pcap_ops[mode->pcap])
panic("pcap group not supported!\n");
//Moved here
/*
ifindex = device_ifindex(mode->device_out); //Make n devices out of it. From here
size = ring_size(mode->device_out, mode->reserve_size);
bpf_parse_rules(mode->filter, &bpf_ops);
set_packet_loss_discard(tx_sock);
set_sockopt_hwtimestamp(tx_sock, mode->device_out);
setup_tx_ring_layout(tx_sock, &tx_ring, size, mode->jumbo_support);
create_tx_ring(tx_sock, &tx_ring);
mmap_tx_ring(tx_sock, &tx_ring);
alloc_tx_ring_frames(&tx_ring);
bind_tx_ring(tx_sock, &tx_ring, ifindex);
dissector_init_all(mode->print_mode);
if (mode->cpu >= 0 && ifindex > 0) {
irq = device_irq_number(mode->device_out);
device_bind_irq_to_cpu(mode->cpu, irq);
printf("IRQ: %s:%d > CPU%d\n", mode->device_out, irq,
mode->cpu);
} //Till here. Make n TXRings. One for each NIC.
*/
//Moved to here end
int x = 0;
for (filen = 0; filen < num_of_pcaps; filen++) {
tx_sock = pf_socket();
mode->device_in = pcaplist[filen];
printf("\n \n File selected is: %s \n", mode->device_in);
fd = open_or_die(mode->device_in, O_RDONLY | O_LARGEFILE | O_NOATIME); //Need to do for each file
ret =
pcap_ops[mode->pcap]->pull_file_header(fd,
&mode->link_type);
if (ret) {
panic("error reading pcap header!\n");
continue;
}
if (pcap_ops[mode->pcap]->prepare_reading_pcap) {
ret = pcap_ops[mode->pcap]->prepare_reading_pcap(fd);
if (ret) {
panic("error prepare reading pcap!\n");
continue;
}
}
fmemset(&tx_ring, 0, sizeof(tx_ring));
fmemset(&bpf_ops, 0, sizeof(bpf_ops));
fmemset(&stats, 0, sizeof(stats));
if (mode->rfraw) {
mode->device_trans = xstrdup(mode->device_out);
xfree(mode->device_out);
enter_rfmon_mac80211(mode->device_trans,
&mode->device_out);
if (mode->link_type != LINKTYPE_IEEE802_11)
panic("Wrong linktype of pcap!\n");
continue;
}
ifindex = device_ifindex(mode->device_out); //Make n devices out of it. From here
size = ring_size(mode->device_out, mode->reserve_size);
bpf_parse_rules(mode->filter, &bpf_ops);
set_packet_loss_discard(tx_sock);
set_sockopt_hwtimestamp(tx_sock, mode->device_out);
setup_tx_ring_layout(tx_sock, &tx_ring, size,
mode->jumbo_support);
create_tx_ring(tx_sock, &tx_ring);
mmap_tx_ring(tx_sock, &tx_ring);
alloc_tx_ring_frames(&tx_ring);
bind_tx_ring(tx_sock, &tx_ring, ifindex); //Till here. Make n TXRings. One for each NIC.
dissector_init_all(mode->print_mode);
if (mode->cpu >= 0 && ifindex > 0) {
irq = device_irq_number(mode->device_out);
device_bind_irq_to_cpu(mode->cpu, irq);
printf("IRQ: %s:%d > CPU%d\n", mode->device_out, irq,
mode->cpu);
}
if (mode->kpull)
interval = mode->kpull;
itimer.it_interval.tv_sec = 0;
itimer.it_interval.tv_usec = interval;
itimer.it_value.tv_sec = 0;
itimer.it_value.tv_usec = interval; //for fixed delay need to SET this
setitimer(ITIMER_REAL, &itimer, NULL);
printf("BPF:\n");
bpf_dump_all(&bpf_ops);
printf("MD: TX %luus %s ", interval,
pcap_ops[mode->pcap]->name);
if (mode->rfraw)
printf("802.11 raw via %s ", mode->device_out);
#ifdef _LARGEFILE64_SOURCE
printf("lf64 ");
#endif
ioprio_print();
printf("\n");
gettimeofday(&start, NULL);
sigint = 0;
while (likely(sigint == 0)) {
while (user_may_pull_from_tx
(tx_ring.frames[it].iov_base)) {
struct pcap_pkthdr phdr;
hdr = tx_ring.frames[it].iov_base;
/* Kernel assumes: data = ph.raw + po->tp_hdrlen -
* sizeof(struct sockaddr_ll); */
out = ((uint8_t *) hdr) + TPACKET_HDRLEN -
sizeof(struct sockaddr_ll);
do {
memset(&phdr, 0, sizeof(phdr));
ret =
pcap_ops[mode->pcap]->
read_pcap_pkt(fd, &phdr, out,
ring_frame_size
(&tx_ring));
if (unlikely(ret <= 0))
goto out;
if (ring_frame_size(&tx_ring) <
phdr.len) {
phdr.len =
ring_frame_size(&tx_ring);
trunced++;
}
} while (mode->filter
&& !bpf_run_filter(&bpf_ops, out,
phdr.len));
pcap_pkthdr_to_tpacket_hdr(&phdr, &hdr->tp_h);
if (stats.tx_packets == 0) {
pcap_time = &phdr.ts;
beginning_tv_sec = pcap_time->tv_sec;
beginning_tv_usec = pcap_time->tv_usec;
}
/*
* START OF BLOCK
The below routines are only if Speed or PPS is set else they won't execute
*
*/
if (gbit_s > 0) {
/* computing max rate */
pps =
((gbit_s * 1000000000) /
8 /*byte */ ) / (8 /*Preamble */ +
avg_send_len +
4 /*CRC*/ +
12 /*IFG*/);
td = (double)(hz / pps);
tick_delta = (ticks) td;
//printf("Number of %d-byte Packet Per Second at %.2f Gbit/s: %.2f\n", (avg_send_len + 4 /*CRC*/), gbit_s, pps);
}
else if (pps > 0) {
td = (double)(hz / pps);
tick_delta = (ticks) td;
}
//END OF BLOCK
/*
show_frame_hdr(hdr, mode->print_mode, RING_MODE_EGRESS);
dissector_entry_point(out, hdr->tp_h.tp_snaplen,
mode->link_type, mode->print_mode);
*/
//x++;
kernel_may_pull_from_tx(&hdr->tp_h);
next_slot_prewr(&it, &tx_ring);
stats.tx_bytes += hdr->tp_h.tp_len;;
stats.tx_packets++;
send_len += hdr->tp_h.tp_len;
avg_send_len = send_len / stats.tx_packets;
if (unlikely(sigint == 1))
break;
if (frame_cnt_max != 0 &&
stats.tx_packets >= frame_cnt_max) {
//sigint = 1;
break;
}
//START OF BLOCK
if (gbit_s != 0 || pps > 0)
tick_start = getticks();
if (gbit_s > 0 || pps > 0) {
/* rate set */
while ((getticks() - tick_start) <
(num_pkt_good_sent *
tick_delta)) ;
} else if (gbit_s < 0) {
/* real pcap rate --FULL SYNC MODE */
pcap_time = &phdr.ts;
ticks ticks_from_beginning = (((pcap_time->tv_sec - beginning_tv_sec) * 1000000) + (pcap_time->tv_usec - beginning_tv_usec)) * hz / 1000000; //delta time of this pkt from beginning of pcap
/* h-> is this packet header and beginning is 1st packet's header */
if (ticks_from_beginning == 0)
tick_start = getticks(); /* first packet, resetting time */
while ((getticks() - tick_start) <
ticks_from_beginning) ;
}
//pps routine end
//END OF BLOCK
}
}
out:
gettimeofday(&end, NULL);
diff = tv_subtract(end, start);
fflush(stdout);
printf("\n");
printf("\r%12lu frames outgoing\n", stats.tx_packets);
printf("\r%12lu frames truncated (larger than frame)\n",
trunced);
printf("\r%12lu bytes outgoing\n", stats.tx_bytes);
printf("\r%12lu sec, %lu usec in total\n", diff.tv_sec,
diff.tv_usec);
bpf_release(&bpf_ops);
dissector_cleanup_all();
destroy_tx_ring(tx_sock, &tx_ring);
if (mode->rfraw)
leave_rfmon_mac80211(mode->device_trans,
mode->device_out);
close(tx_sock);
if (pcap_ops[mode->pcap]->prepare_close_pcap)
pcap_ops[mode->pcap]->prepare_close_pcap(fd,
PCAP_MODE_READ);
close(fd);
}
}