Limitations:
1. DPDK support will be on if DPDK is available. Please set DIR for --with-dpdk[=DIR] with ./configure or -DDPDK_DIR[=DIR] with cmake if DPDK is installed manually.
-2. Only support link libdpdk.so dynamicly, because the libdpdk.a will not work correctly.
+2. Only support link libdpdk.so dynamically, because the libdpdk.a will not work correctly.
3. Only support read operation, and packet injection has not been supported yet.
Usage:
You shall learn how to bind nic with DPDK-compatible driver by $RTE_SDK/usertools/dpdk-devbind.py, such as igb_uio.
And enable hugepages by dpdk-setup.sh
-Then launch the l2fwd with dynamic dirver support. For example:
+Then launch the l2fwd with dynamic driver support. For example:
$RTE_SDK/examples/l2fwd/$RTE_TARGET/l2fwd -dlibrte_pmd_e1000.so -dlibrte_pmd_ixgbe.so -dlibrte_mempool_ring.so -- -p 0x1
3. Compile libpcap with dpdk options.
-If DPDK has not been found automatically, you shall export DPDK envionment variable which are used for compiling DPDK. And then pass $RTE_SDK/$RTE_TARGET to --with-dpdk or -DDPDK_DIR
+If DPDK has not been found automatically, you shall export DPDK environment variable which are used for compiling DPDK. And then pass $RTE_SDK/$RTE_TARGET to --with-dpdk or -DDPDK_DIR
export RTE_SDK={your DPDK base directory}
export RTE_TARGET={your target name}
4. Link your own program with libpcap, and use DPDK with the device name as dpdk:{portid}, such as dpdk:0.
And you shall set DPDK configure options by environment variable DPDK_CFG
-For example, the testprogs/capturetest could be lanched by:
+For example, the testprogs/capturetest could be launched by:
env DPDK_CFG="--log-level=debug -l0 -dlibrte_pmd_e1000.so -dlibrte_pmd_ixgbe.so -dlibrte_mempool_ring.so" ./capturetest -i dpdk:0
*/
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
-#include <ctype.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <limits.h> /* for INT_MAX */
#include <time.h>
#include <sys/time.h>
#include "pcap-int.h"
#include "pcap-dpdk.h"
+/*
+ * Deal with API changes that break source compatibility.
+ */
+
+#ifdef HAVE_STRUCT_RTE_ETHER_ADDR
+#define ETHER_ADDR_TYPE struct rte_ether_addr
+#else
+#define ETHER_ADDR_TYPE struct ether_addr
+#endif
+
#define DPDK_DEF_LOG_LEV RTE_LOG_ERR
//
// This is set to 0 if we haven't initialized DPDK yet, 1 if we've
static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
+#ifdef RTE_ETHER_MAX_JUMBO_FRAME_LEN
+#define RTE_ETH_PCAP_SNAPLEN RTE_ETHER_MAX_JUMBO_FRAME_LEN
+#else
#define RTE_ETH_PCAP_SNAPLEN ETHER_MAX_JUMBO_FRAME_LEN
+#endif
static struct rte_eth_dev_tx_buffer *tx_buffer;
uint64_t bps;
struct rte_mempool * pktmbuf_pool;
struct dpdk_ts_helper ts_helper;
- struct ether_addr eth_addr;
+ ETHER_ADDR_TYPE eth_addr;
char mac_addr[DPDK_MAC_ADDR_SIZE];
char pci_addr[DPDK_PCI_ADDR_SIZE];
unsigned char pcap_tmp_buf[RTE_ETH_PCAP_SNAPLEN];
timeradd(&(helper->start_time), &cur_time, ts);
}
-static uint32_t dpdk_gather_data(unsigned char *data, int len, struct rte_mbuf *mbuf)
+static uint32_t dpdk_gather_data(unsigned char *data, uint32_t len, struct rte_mbuf *mbuf)
{
uint32_t total_len = 0;
while (mbuf && (total_len+mbuf->data_len) < len ){
}
-static int dpdk_read_with_timeout(pcap_t *p, uint16_t portid, struct rte_mbuf **pkts_burst, const uint16_t burst_cnt){
+static int dpdk_read_with_timeout(pcap_t *p, struct rte_mbuf **pkts_burst, const uint16_t burst_cnt){
struct pcap_dpdk *pd = (struct pcap_dpdk*)(p->priv);
int nb_rx = 0;
int timeout_ms = p->opt.timeout;
// In non-blocking mode, just read once, no matter how many packets are captured.
nb_rx = (int)rte_eth_rx_burst(pd->portid, 0, pkts_burst, burst_cnt);
}else{
- // In blocking mode, read many times until packets are captured or timeout or break_loop is setted.
+ // In blocking mode, read many times until packets are captured or timeout or break_loop is set.
// if timeout_ms == 0, it may be blocked forever.
while (timeout_ms == 0 || sleep_ms < timeout_ms){
nb_rx = (int)rte_eth_rx_burst(pd->portid, 0, pkts_burst, burst_cnt);
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
struct rte_mbuf *m;
struct pcap_pkthdr pcap_header;
- uint16_t portid = pd->portid;
// In DPDK, pkt_len is sum of lengths for all segments. And data_len is for one segment
uint32_t pkt_len = 0;
uint32_t caplen = 0;
u_char *large_buffer=NULL;
int timeout_ms = p->opt.timeout;
- if ( !PACKET_COUNT_IS_UNLIMITED(max_cnt) && max_cnt < MAX_PKT_BURST){
+ /*
+ * This can conceivably process more than INT_MAX packets,
+ * which would overflow the packet count, causing it either
+ * to look like a negative number, and thus cause us to
+ * return a value that looks like an error, or overflow
+ * back into positive territory, and thus cause us to
+ * return a too-low count.
+ *
+ * Therefore, if the packet count is unlimited, we clip
+ * it at INT_MAX; this routine is not expected to
+ * process packets indefinitely, so that's not an issue.
+ */
+ if (PACKET_COUNT_IS_UNLIMITED(max_cnt))
+ max_cnt = INT_MAX;
+
+ if (max_cnt < MAX_PKT_BURST){
burst_cnt = max_cnt;
}else{
burst_cnt = MAX_PKT_BURST;
}
- while( PACKET_COUNT_IS_UNLIMITED(max_cnt) || pkt_cnt < max_cnt){
+ while( pkt_cnt < max_cnt){
if (p->break_loop){
p->break_loop = 0;
return PCAP_ERROR_BREAK;
}
// read once in non-blocking mode, or try many times waiting for timeout_ms.
- // if timeout_ms == 0, it will be blocked until one packet arrives or break_loop is setted.
- nb_rx = dpdk_read_with_timeout(p, portid, pkts_burst, burst_cnt);
+ // if timeout_ms == 0, it will be blocked until one packet arrives or break_loop is set.
+ nb_rx = dpdk_read_with_timeout(p, pkts_burst, burst_cnt);
if (nb_rx == 0){
if (pd->nonblock){
RTE_LOG(DEBUG, USER1, "dpdk: no packets available in non-blocking mode.\n");
}else{
if (p->break_loop){
- RTE_LOG(DEBUG, USER1, "dpdk: no packets available and break_loop is setted in blocking mode.\n");
+ RTE_LOG(DEBUG, USER1, "dpdk: no packets available and break_loop is set in blocking mode.\n");
p->break_loop = 0;
return PCAP_ERROR_BREAK;
bp = rte_pktmbuf_mtod(m, u_char *);
}else{
// use fast buffer pcap_tmp_buf if pkt_len is small, no need to call malloc and free
- if ( pkt_len <= ETHER_MAX_JUMBO_FRAME_LEN)
+ if ( pkt_len <= RTE_ETH_PCAP_SNAPLEN)
{
gather_len = dpdk_gather_data(pd->pcap_tmp_buf, RTE_ETH_PCAP_SNAPLEN, m);
bp = pd->pcap_tmp_buf;
}
if (bp){
- if (p->fcode.bf_insns==NULL || pcap_filter(p->fcode.bf_insns, bp, pcap_header.len, pcap_header.caplen)){
+ if (p->fcode.bf_insns==NULL || pcapint_filter(p->fcode.bf_insns, bp, pcap_header.len, pcap_header.caplen)){
cb(cb_arg, &pcap_header, bp);
}else{
pd->bpf_drop++;
static int pcap_dpdk_inject(pcap_t *p, const void *buf _U_, int size _U_)
{
//not implemented yet
- pcap_strlcpy(p->errbuf,
+ pcapint_strlcpy(p->errbuf,
"dpdk error: Inject function has not been implemented yet",
PCAP_ERRBUF_SIZE);
return PCAP_ERROR;
}
rte_eth_dev_stop(pd->portid);
rte_eth_dev_close(pd->portid);
- pcap_cleanup_live_common(p);
+ pcapint_cleanup_live_common(p);
}
static void nic_stats_display(struct pcap_dpdk *pd)
rte_eth_link_get(portid, plink);
return plink->link_status == ETH_LINK_UP;
}
-static void eth_addr_str(struct ether_addr *addrp, char* mac_str, int len)
+static void eth_addr_str(ETHER_ADDR_TYPE *addrp, char* mac_str, int len)
{
int offset=0;
if (addrp == NULL){
static uint16_t portid_by_device(char * device)
{
uint16_t ret = DPDK_PORTID_MAX;
- int len = strlen(device);
- int prefix_len = strlen(DPDK_PREFIX);
+ size_t len = strlen(device);
+ size_t prefix_len = strlen(DPDK_PREFIX);
unsigned long ret_ul = 0L;
char *pEnd;
if (len<=prefix_len || strncmp(device, DPDK_PREFIX, prefix_len)) // check prefix dpdk:
skip_space=!skip_space; // skip normal char
dargv[cnt++] = dpdk_cfg+i;
}
- if (!skip_space && dpdk_cfg[i]==' '){ // fint a space
+ if (!skip_space && dpdk_cfg[i]==' '){ // find a space
dpdk_cfg[i]=0x00; // end of this opt
skip_space=!skip_space; // skip space char
}
char *dargv[DPDK_ARGC_MAX];
char *ptr_dpdk_cfg = NULL;
int ret;
- // globale var
+ // global var
if (is_dpdk_pre_inited != 0)
{
// already inited; did that succeed?
p->selectable_fd = p->fd;
p->read_op = pcap_dpdk_dispatch;
p->inject_op = pcap_dpdk_inject;
- // using pcap_filter currently, though DPDK provides their own BPF function. Because DPDK BPF needs load a ELF file as a filter.
- p->setfilter_op = install_bpf_program;
+ // using pcapint_filter currently, though DPDK provides their own BPF function. Because DPDK BPF needs load a ELF file as a filter.
+ p->setfilter_op = pcapint_install_bpf_program;
p->setdirection_op = NULL;
p->set_datalink_op = NULL;
p->getnonblock_op = pcap_dpdk_getnonblock;
p->setnonblock_op = pcap_dpdk_setnonblock;
p->stats_op = pcap_dpdk_stats;
p->cleanup_op = pcap_dpdk_close;
- p->breakloop_op = pcap_breakloop_common;
+ p->breakloop_op = pcapint_breakloop_common;
// set default timeout
pd->required_select_timeout.tv_sec = 0;
pd->required_select_timeout.tv_usec = DPDK_DEF_MIN_SLEEP_MS*1000;
if (ret <= PCAP_ERROR) // all kinds of error code
{
- pcap_cleanup_live_common(p);
+ pcapint_cleanup_live_common(p);
}else{
rte_eth_dev_get_name_by_port(portid,pd->pci_addr);
RTE_LOG(INFO, USER1,"Port %d device: %s, MAC:%s, PCI:%s\n", portid, p->opt.device, pd->mac_addr, pd->pci_addr);
return ret;
}
-// device name for dpdk shoud be in the form as dpdk:number, such as dpdk:0
+// device name for dpdk should be in the form as dpdk:number, such as dpdk:0
pcap_t * pcap_dpdk_create(const char *device, char *ebuf, int *is_ours)
{
pcap_t *p=NULL;
if (! *is_ours)
return NULL;
//memset will happen
- p = pcap_create_common(ebuf, sizeof(struct pcap_dpdk));
+ p = PCAP_CREATE_COMMON(ebuf, struct pcap_dpdk);
if (p == NULL)
return NULL;
unsigned int nb_ports = 0;
char dpdk_name[DPDK_DEV_NAME_MAX];
char dpdk_desc[DPDK_DEV_DESC_MAX];
- struct ether_addr eth_addr;
+ ETHER_ADDR_TYPE eth_addr;
char mac_addr[DPDK_MAC_ADDR_SIZE];
char pci_addr[DPDK_PCI_ADDR_SIZE];
do{
// PCI addr
rte_eth_dev_get_name_by_port(i,pci_addr);
snprintf(dpdk_desc,DPDK_DEV_DESC_MAX-1,"%s %s, MAC:%s, PCI:%s", DPDK_DESC, dpdk_name, mac_addr, pci_addr);
- if (add_dev(devlistp, dpdk_name, 0, dpdk_desc, ebuf)==NULL){
+ if (pcapint_add_dev(devlistp, dpdk_name, 0, dpdk_desc, ebuf)==NULL){
ret = PCAP_ERROR;
break;
}
* There are no regular interfaces, just DPDK interfaces.
*/
int
-pcap_platform_finddevs(pcap_if_list_t *devlistp _U_, char *errbuf)
+pcapint_platform_finddevs(pcap_if_list_t *devlistp _U_, char *errbuf)
{
return (0);
}
* Attempts to open a regular interface fail.
*/
pcap_t *
-pcap_create_interface(const char *device, char *errbuf)
+pcapint_create_interface(const char *device, char *errbuf)
{
- snprintf(errbuf, PCAP_ERRBUF_SIZE,
- "This version of libpcap only supports DPDK");
+ snprintf(errbuf, PCAP_ERRBUF_SIZE, PCAP_ENODEV_MESSAGE, "DPDK");
return NULL;
}
projects / libpcap / blobdiff