void pfring_dna_close(pfring *ring) {
int i;
if(ring->dna_term)
ring->dna_term(ring);
for(i=0; i<ring->dna.dna_dev.mem_info.rx.packet_memory_num_chunks; i++)
if(ring->dna.dna_dev.rx_packet_memory[i] != 0)
munmap((void*)ring->dna.dna_dev.rx_packet_memory[i],
ring->dna.dna_dev.mem_info.rx.packet_memory_chunk_len);
if(ring->dna.dna_dev.rx_descr_packet_memory != NULL)
munmap(ring->dna.dna_dev.rx_descr_packet_memory,
ring->dna.dna_dev.mem_info.rx.descr_packet_memory_tot_len);
for(i=0; i<ring->dna.dna_dev.mem_info.tx.packet_memory_num_chunks; i++)
if(ring->dna.dna_dev.tx_packet_memory[i] != 0)
munmap((void*)ring->dna.dna_dev.tx_packet_memory,
ring->dna.dna_dev.mem_info.tx.packet_memory_chunk_len);
if(ring->dna.dna_dev.tx_descr_packet_memory != NULL)
munmap(ring->dna.dna_dev.tx_descr_packet_memory,
ring->dna.dna_dev.mem_info.tx.descr_packet_memory_tot_len);
if(ring->dna.dna_dev.phys_card_memory != NULL)
munmap(ring->dna.dna_dev.phys_card_memory,
ring->dna.dna_dev.mem_info.phys_card_memory_len);
pfring_map_dna_device(ring, remove_device_mapping, "");
if(ring->clear_promisc)
pfring_set_if_promisc(ring->device_name, 0);
close(ring->fd);
}
void pfring_mod_close(pfring *ring) {
if(ring->buffer != NULL) {
if(munmap(ring->buffer, ring->slots_info->tot_mem) == -1) {
fprintf(stderr, "Warning: unable to unmap ring buffer memory [address=%p][size=%u]\n",
ring->buffer, ring->slots_info->tot_mem);
}
}
if(ring->clear_promisc)
pfring_set_if_promisc(ring->device_name, 0);
close(ring->fd);
}
void pfring_dna_close(pfring *ring) {
int i, rc = 0;
if(ring->dna_term)
ring->dna_term(ring);
for(i=0; i<ring->dna.dna_dev.mem_info.rx.packet_memory_num_chunks; i++) {
if(ring->dna.dna_dev.rx_packet_memory[i] != 0) {
if(munmap((void *) ring->dna.dna_dev.rx_packet_memory[i],
ring->dna.dna_dev.mem_info.rx.packet_memory_chunk_len) == -1)
rc = -1;
}
}
if(rc == -1) {
fprintf(stderr, "Warning: unable to unmap rx packet memory [address=%p][size=%u]\n",
(void *) ring->dna.dna_dev.rx_packet_memory,
ring->dna.dna_dev.mem_info.rx.packet_memory_chunk_len *
ring->dna.dna_dev.mem_info.rx.packet_memory_num_chunks);
}
if(ring->dna.dna_dev.rx_descr_packet_memory != NULL) {
rc = munmap(ring->dna.dna_dev.rx_descr_packet_memory,
ring->dna.dna_dev.mem_info.rx.descr_packet_memory_tot_len);
if(rc == -1) {
fprintf(stderr, "Warning: unable to unmap rx description memory [address=%p][size=%u]\n",
ring->dna.dna_dev.rx_descr_packet_memory,
ring->dna.dna_dev.mem_info.rx.descr_packet_memory_tot_len);
}
}
rc = 0;
for(i=0; i<ring->dna.dna_dev.mem_info.tx.packet_memory_num_chunks; i++) {
if(ring->dna.dna_dev.tx_packet_memory[i] != 0) {
if(munmap((void *) ring->dna.dna_dev.tx_packet_memory[i],
ring->dna.dna_dev.mem_info.tx.packet_memory_chunk_len) == -1)
rc = -1;
}
}
if(rc == -1) {
fprintf(stderr, "Warning: unable to unmap tx packet memory [address=%p][size=%u]\n",
(void*)ring->dna.dna_dev.tx_packet_memory,
ring->dna.dna_dev.mem_info.tx.packet_memory_chunk_len *
ring->dna.dna_dev.mem_info.tx.packet_memory_num_chunks);
}
if(ring->dna.dna_dev.tx_descr_packet_memory != NULL) {
rc = munmap(ring->dna.dna_dev.tx_descr_packet_memory,
ring->dna.dna_dev.mem_info.tx.descr_packet_memory_tot_len);
if(rc == -1) {
fprintf(stderr, "Warning: unable to unmap xmit description memory [address=%p][size=%u]\n",
ring->dna.dna_dev.tx_descr_packet_memory,
ring->dna.dna_dev.mem_info.tx.descr_packet_memory_tot_len);
}
}
if(ring->dna.dna_dev.phys_card_memory != NULL) {
rc = munmap(ring->dna.dna_dev.phys_card_memory,
ring->dna.dna_dev.mem_info.phys_card_memory_len);
if(rc == -1) {
fprintf(stderr, "Warning: unable to unmap physical card memory [address=%p][size=%u]\n",
ring->dna.dna_dev.phys_card_memory, ring->dna.dna_dev.mem_info.phys_card_memory_len);
}
}
pfring_map_dna_device(ring, remove_device_mapping, "");
if(ring->clear_promisc)
pfring_set_if_promisc(ring->device_name, 0);
close(ring->fd);
}
int pfring_dna_open(pfring *ring) {
int channel_id = 0;
int rc;
int i;
char *at;
ring->direction = rx_only_direction;
ring->close = pfring_dna_close;
ring->set_sampling_rate = pfring_dna_set_sampling_rate;
ring->stats = pfring_dna_stats;
ring->recv = pfring_dna_recv;
ring->enable_ring = pfring_dna_enable_ring;
ring->set_direction = pfring_dna_set_direction;
ring->poll = pfring_dna_poll;
ring->set_poll_watermark = pfring_mod_set_poll_watermark;
ring->set_poll_duration = pfring_mod_set_poll_duration;
ring->set_channel_id = pfring_mod_set_channel_id;
ring->set_application_name = pfring_mod_set_application_name;
ring->set_application_stats = pfring_mod_set_application_stats;
ring->get_appl_stats_file_name = pfring_mod_get_appl_stats_file_name;
ring->bind = pfring_mod_bind;
ring->get_num_rx_channels = pfring_mod_get_num_rx_channels;
ring->get_selectable_fd = pfring_mod_get_selectable_fd;
ring->set_socket_mode = pfring_mod_set_socket_mode;
ring->get_ring_id = pfring_mod_get_ring_id;
ring->version = pfring_mod_version;
ring->get_bound_device_address = pfring_mod_get_bound_device_address;
ring->get_bound_device_ifindex = pfring_mod_get_bound_device_ifindex;
ring->get_device_ifindex = pfring_mod_get_device_ifindex;
ring->get_slot_header_len = pfring_mod_get_slot_header_len;
ring->set_virtual_device = pfring_mod_set_virtual_device;
ring->add_hw_rule = pfring_hw_ft_add_hw_rule;
ring->remove_hw_rule = pfring_hw_ft_remove_hw_rule;
ring->loopback_test = pfring_mod_loopback_test;
ring->disable_ring = pfring_mod_disable_ring;
ring->handle_hash_filtering_rule = pfring_mod_handle_hash_filtering_rule;
ring->add_filtering_rule = pfring_mod_add_filtering_rule;
ring->remove_filtering_rule = pfring_mod_remove_filtering_rule;
ring->toggle_filtering_policy = pfring_mod_toggle_filtering_policy;
ring->shutdown = pfring_mod_shutdown;
/* These functions are set by the dna library: (when supported by the device)
* ring->send
* ring->send_get_time
* ring->next_pkt_time
* ring->next_pkt_raw_timestamp
* ring->set_device_clock
* ring->get_device_clock
*/
ring->poll_duration = DEFAULT_POLL_DURATION;
ring->dna.last_dna_operation = remove_device_mapping;
ring->fd = socket(PF_RING, SOCK_RAW, htons(ETH_P_ALL));
#ifdef DEBUG
printf("Open RING [fd=%d]\n", ring->fd);
#endif
if(ring->fd < 0)
return -1;
at = strchr(ring->device_name, '@');
if(at != NULL) {
at[0] = '\0';
/*
Syntax
ethX@1 channel 1
*/
channel_id = atoi(&at[1]);
}
ring->dna.dna_dev.channel_id = channel_id;
rc = pfring_map_dna_device(ring, add_device_mapping, ring->device_name);
if(rc < 0) {
#if 0
printf("pfring_map_dna_device() failed [rc=%d]: device already in use, channel not existing or non-DNA driver?\n", rc);
printf("Make sure that you load the DNA-driver *after* you loaded the PF_RING kernel module\n");
#endif
return -1;
}
rc = pfring_get_mapped_dna_device(ring, &ring->dna.dna_dev);
if(rc < 0) {
printf("pfring_get_mapped_dna_device() failed [rc=%d]\n", rc);
pfring_map_dna_device(ring, remove_device_mapping, ring->device_name);
close(ring->fd);
return -1;
}
#ifdef DEBUG
printf("[num_slots=%d][slot_len=%d][tot_mem_len=%d]\n",
ring->dna.dna_dev.packet_memory_num_slots,
ring->dna.dna_dev.packet_memory_slot_len,
ring->dna.dna_dev.packet_memory_tot_len);
printf("[memory_num_slots=%d][memory_slot_len=%d]"
"[memory_tot_len=%d]\n",
ring->dna.dna_dev.descr_packet_memory_num_slots,
ring->dna.dna_dev.descr_packet_memory_slot_len,
ring->dna.dna_dev.descr_packet_memory_tot_len);
#endif
ring->dna.dna_mapped_device = 1;
/* ***************************************** */
for(i=0; i<ring->dna.dna_dev.mem_info.rx.packet_memory_num_chunks; i++) {
ring->dna.dna_dev.rx_packet_memory[i] =
(unsigned long)mmap(NULL, ring->dna.dna_dev.mem_info.rx.packet_memory_chunk_len,
PROT_READ|PROT_WRITE, MAP_SHARED, ring->fd,
(100+i)*getpagesize());
if(ring->dna.dna_dev.rx_packet_memory[i] == (unsigned long)MAP_FAILED) {
printf("mmap(100/%d) failed", i);
close(ring->fd);
return -1;
}
}
/* ***************************************** */
for(i=0; i<ring->dna.dna_dev.mem_info.tx.packet_memory_num_chunks; i++) {
ring->dna.dna_dev.tx_packet_memory[i] =
(unsigned long)mmap(NULL, ring->dna.dna_dev.mem_info.tx.packet_memory_chunk_len,
PROT_READ|PROT_WRITE, MAP_SHARED, ring->fd,
(100+ring->dna.dna_dev.mem_info.rx.packet_memory_num_chunks+i)*getpagesize());
if(ring->dna.dna_dev.tx_packet_memory[i] == (unsigned long)MAP_FAILED) {
printf("mmap(100/%d) failed", i);
close(ring->fd);
return -1;
}
}
/* ***************************************** */
if(ring->dna.dna_dev.mem_info.rx.descr_packet_memory_tot_len > 0) {
ring->dna.dna_dev.rx_descr_packet_memory =
(void*)mmap(NULL, ring->dna.dna_dev.mem_info.rx.descr_packet_memory_tot_len,
PROT_READ|PROT_WRITE, MAP_SHARED, ring->fd, 1*getpagesize());
if(ring->dna.dna_dev.rx_descr_packet_memory == MAP_FAILED) {
printf("mmap(1) failed");
close(ring->fd);
return -1;
}
}
/* ***************************************** */
if(ring->dna.dna_dev.mem_info.tx.descr_packet_memory_tot_len > 0) {
ring->dna.dna_dev.tx_descr_packet_memory =
(void*)mmap(NULL, ring->dna.dna_dev.mem_info.tx.descr_packet_memory_tot_len,
PROT_READ|PROT_WRITE, MAP_SHARED, ring->fd, 3*getpagesize());
if(ring->dna.dna_dev.tx_descr_packet_memory == MAP_FAILED) {
printf("mmap(3) failed");
close(ring->fd);
return -1;
}
}
/* ***************************************** */
if(ring->dna.dna_dev.mem_info.phys_card_memory_len > 0) {
/* some DNA drivers do not use this memory */
ring->dna.dna_dev.phys_card_memory =
(void*)mmap(NULL, ring->dna.dna_dev.mem_info.phys_card_memory_len,
PROT_READ|PROT_WRITE, MAP_SHARED, ring->fd, 2*getpagesize());
if(ring->dna.dna_dev.phys_card_memory == MAP_FAILED) {
printf("mmap(2) failed");
close(ring->fd);
return -1;
}
}
/* ***************************************** */
if(ring->promisc) {
if(pfring_set_if_promisc(ring->device_name, 1) == 0)
ring->clear_promisc = 1;
}
/* ***************************************** */
pfring_set_filtering_mode(ring, hardware_only);
/* ***************************************** */
rc = dna_init(ring, sizeof(pfring));
if(rc < 0) {
printf("dna_init() failed\n");
close(ring->fd);
return rc;
}
pfring_enable_hw_timestamp(ring, ring->device_name, ring->hw_ts.enable_hw_timestamp ? 1 : 0, 0 /* TX timestamp disabled by default */);
#ifdef DEBUG
pfring_dump_dna_stats(ring);
#endif
pfring_hw_ft_init(ring);
return 0;
}
int pfring_mod_open(pfring *ring) {
int rc;
u_int memSlotsLen;
/* Setting pointers, we need these functions soon */
ring->close = pfring_mod_close;
ring->stats = pfring_mod_stats;
ring->recv = pfring_mod_recv;
ring->set_poll_watermark = pfring_mod_set_poll_watermark;
ring->set_poll_duration = pfring_mod_set_poll_duration;
ring->set_channel_id = pfring_mod_set_channel_id;
ring->set_channel_mask = pfring_mod_set_channel_mask;
ring->set_application_name = pfring_mod_set_application_name;
ring->bind = pfring_mod_bind;
ring->send = pfring_mod_send;
ring->get_num_rx_channels = pfring_mod_get_num_rx_channels;
ring->set_sampling_rate = pfring_mod_set_sampling_rate;
ring->get_selectable_fd = pfring_mod_get_selectable_fd;
ring->set_direction = pfring_mod_set_direction;
ring->set_socket_mode = pfring_mod_set_socket_mode;
ring->set_cluster = pfring_mod_set_cluster;
ring->remove_from_cluster = pfring_mod_remove_from_cluster;
ring->set_master_id = pfring_mod_set_master_id;
ring->set_master = pfring_mod_set_master;
ring->get_ring_id = pfring_mod_get_ring_id;
ring->get_num_queued_pkts = pfring_mod_get_num_queued_pkts;
ring->get_packet_consumer_mode = pfring_mod_get_packet_consumer_mode;
ring->set_packet_consumer_mode = pfring_mod_set_packet_consumer_mode;
ring->get_hash_filtering_rule_stats = pfring_mod_get_hash_filtering_rule_stats;
ring->handle_hash_filtering_rule = pfring_mod_handle_hash_filtering_rule;
ring->purge_idle_hash_rules = pfring_mod_purge_idle_hash_rules;
ring->add_filtering_rule = pfring_mod_add_filtering_rule;
ring->remove_filtering_rule = pfring_mod_remove_filtering_rule;
ring->purge_idle_rules = pfring_mod_purge_idle_rules;
ring->get_filtering_rule_stats = pfring_mod_get_filtering_rule_stats;
ring->toggle_filtering_policy = pfring_mod_toggle_filtering_policy;
ring->enable_rss_rehash = pfring_mod_enable_rss_rehash;
ring->poll = pfring_mod_poll;
ring->version = pfring_mod_version;
ring->get_bound_device_address = pfring_mod_get_bound_device_address;
ring->get_bound_device_ifindex = pfring_mod_get_bound_device_ifindex;
ring->get_device_ifindex = pfring_mod_get_device_ifindex;
ring->get_slot_header_len = pfring_mod_get_slot_header_len;
ring->set_virtual_device = pfring_mod_set_virtual_device;
ring->add_hw_rule = pfring_hw_ft_add_hw_rule;
ring->remove_hw_rule = pfring_hw_ft_remove_hw_rule;
ring->loopback_test = pfring_mod_loopback_test;
ring->enable_ring = pfring_mod_enable_ring;
ring->disable_ring = pfring_mod_disable_ring;
ring->is_pkt_available = pfring_mod_is_pkt_available;
ring->set_bpf_filter = pfring_mod_set_bpf_filter;
ring->remove_bpf_filter = pfring_mod_remove_bpf_filter;
ring->shutdown = pfring_mod_shutdown;
ring->send_last_rx_packet = pfring_mod_send_last_rx_packet;
ring->poll_duration = DEFAULT_POLL_DURATION;
ring->fd = socket(PF_RING, SOCK_RAW, htons(ETH_P_ALL));
if(ring->fd < 0)
return -1;
#ifdef RING_DEBUG
printf("Open RING [fd=%d]\n", ring->fd);
#endif
if(ring->caplen > MAX_CAPLEN) ring->caplen = MAX_CAPLEN;
rc = setsockopt(ring->fd, 0, SO_RING_BUCKET_LEN, &ring->caplen, sizeof(ring->caplen));
if(rc < 0) {
close(ring->fd);
return -1;
}
if(!ring->long_header) {
rc = setsockopt(ring->fd, 0, SO_USE_SHORT_PKT_HEADER, &ring->long_header, sizeof(ring->long_header));
if(rc < 0) {
close(ring->fd);
return -1;
}
}
/* printf("channel_id=%d\n", channel_id); */
if(!strcmp(ring->device_name, "none")) {
/* No binding yet */
rc = 0;
} else /* "any" or "<interface name>" */
rc = pfring_bind(ring, ring->device_name);
if(rc < 0) {
close(ring->fd);
return -1;
}
ring->kernel_packet_consumer = 0;
ring->buffer = (char *)mmap(NULL, PAGE_SIZE, PROT_READ|PROT_WRITE,
MAP_SHARED, ring->fd, 0);
if(ring->buffer == MAP_FAILED) {
printf("mmap() failed: try with a smaller snaplen\n");
close(ring->fd);
return -1;
}
ring->slots_info = (FlowSlotInfo *)ring->buffer;
if(ring->slots_info->version != RING_FLOWSLOT_VERSION) {
printf("Wrong RING version: "
"kernel is %i, libpfring was compiled with %i\n",
ring->slots_info->version, RING_FLOWSLOT_VERSION);
close(ring->fd);
return -1;
}
memSlotsLen = ring->slots_info->tot_mem;
if(munmap(ring->buffer, PAGE_SIZE) == -1) {
fprintf(stderr, "Warning: unable to unmap ring buffer memory [address=%p][size=%u]\n",
ring->buffer, PAGE_SIZE);
}
ring->buffer = (char *)mmap(NULL, memSlotsLen,
PROT_READ|PROT_WRITE,
MAP_SHARED, ring->fd, 0);
/* printf("mmap len %u\n", memSlotsLen); */
if(ring->buffer == MAP_FAILED) {
printf("mmap() failed");
close(ring->fd);
return -1;
}
ring->slots_info = (FlowSlotInfo *)ring->buffer;
ring->slots = (char *)(ring->buffer+sizeof(FlowSlotInfo));
#ifdef RING_DEBUG
printf("RING (%s): tot_mem=%u/max_slot_len=%u/"
"insert_off=%u/remove_off=%u/dropped=%lu\n",
ring->device_name, ring->slots_info->tot_mem,
ring->slots_info->slot_len, ring->slots_info->insert_off,
ring->slots_info->remove_off, ring->slots_info->tot_lost);
#endif
if(ring->promisc) {
if(pfring_set_if_promisc(ring->device_name, 1) == 0)
ring->clear_promisc = 1;
}
ring->slot_header_len = pfring_get_slot_header_len(ring);
if(ring->slot_header_len == (u_int16_t)-1) {
printf("ring failure (pfring_get_slot_header_len)\n");
return -1;
}
pfring_hw_ft_init(ring);
return 0;
}