examples/l2fwd: add option --[no-]mac-updating
l2fwd could be useful for testing virtual devices without the need of physical ones. To achieve this, this patch adds a new option to enable/disable the MAC addresses updating done at forwarding time: --[no-]mac-updating It enables the use of l2fwd for basic VM to VM communication. By default, MAC address updating remains enabled, to keep consistency with previous usage. Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Acked-by: John McNamara <john.mcnamara@intel.com>
This commit is contained in:
Maxime Coquelin
Thomas Monjalon
parent
edabd7fef5
commit
cf435a07c0
311
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@ -50,17 +50,14 @@ performs L2 forwarding for each packet that is received on an RX_PORT.
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The destination port is the adjacent port from the enabled portmask, that is,
|
The destination port is the adjacent port from the enabled portmask, that is,
|
||||||
if the first four ports are enabled (portmask 0xf),
|
if the first four ports are enabled (portmask 0xf),
|
||||||
ports 1 and 2 forward into each other, and ports 3 and 4 forward into each other.
|
ports 1 and 2 forward into each other, and ports 3 and 4 forward into each other.
|
||||||
Also, the MAC addresses are affected as follows:
|
Also, if MAC addresses updating is enabled, the MAC addresses are affected as follows:
|
||||||
|
|
||||||
* The source MAC address is replaced by the TX_PORT MAC address
|
* The source MAC address is replaced by the TX_PORT MAC address
|
||||||
|
|
||||||
* The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID
|
* The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID
|
||||||
|
|
||||||
This application can be used to benchmark performance using a traffic-generator, as shown in the :numref:`figure_l2_fwd_benchmark_setup`.
|
This application can be used to benchmark performance using a traffic-generator, as shown in the :numref:`figure_l2_fwd_benchmark_setup`,
|
||||||
|
or in a virtualized environment as shown in :numref:`figure_l2_fwd_virtenv_benchmark_setup`.
|
||||||
The application can also be used in a virtualized environment as shown in :numref:`figure_l2_fwd_virtenv_benchmark_setup`.
|
|
||||||
|
|
||||||
The L2 Forwarding application can also be used as a starting point for developing a new application based on the DPDK.
|
|
||||||
|
|
||||||
.. _figure_l2_fwd_benchmark_setup:
|
.. _figure_l2_fwd_benchmark_setup:
|
||||||
|
|
||||||
@ -68,13 +65,23 @@ The L2 Forwarding application can also be used as a starting point for developin
|
|||||||
|
|
||||||
Performance Benchmark Setup (Basic Environment)
|
Performance Benchmark Setup (Basic Environment)
|
||||||
|
|
||||||
|
|
||||||
.. _figure_l2_fwd_virtenv_benchmark_setup:
|
.. _figure_l2_fwd_virtenv_benchmark_setup:
|
||||||
|
|
||||||
.. figure:: img/l2_fwd_virtenv_benchmark_setup.*
|
.. figure:: img/l2_fwd_virtenv_benchmark_setup.*
|
||||||
|
|
||||||
Performance Benchmark Setup (Virtualized Environment)
|
Performance Benchmark Setup (Virtualized Environment)
|
||||||
|
|
||||||
|
This application may be used for basic VM to VM communication as shown in :numref:`figure_l2_fwd_vm2vm`,
|
||||||
|
when MAC addresses updating is disabled.
|
||||||
|
|
||||||
|
.. _figure_l2_fwd_vm2vm:
|
||||||
|
|
||||||
|
.. figure:: img/l2_fwd_vm2vm.*
|
||||||
|
|
||||||
|
Virtual Machine to Virtual Machine communication.
|
||||||
|
|
||||||
|
The L2 Forwarding application can also be used as a starting point for developing a new application based on the DPDK.
|
||||||
|
|
||||||
.. _l2_fwd_vf_setup:
|
.. _l2_fwd_vf_setup:
|
||||||
|
|
||||||
Virtual Function Setup Instructions
|
Virtual Function Setup Instructions
|
||||||
@ -128,7 +135,7 @@ The application requires a number of command line options:
|
|||||||
|
|
||||||
.. code-block:: console
|
.. code-block:: console
|
||||||
|
|
||||||
./build/l2fwd [EAL options] -- -p PORTMASK [-q NQ]
|
./build/l2fwd [EAL options] -- -p PORTMASK [-q NQ] --[no-]mac-updating
|
||||||
|
|
||||||
where,
|
where,
|
||||||
|
|
||||||
@ -136,7 +143,10 @@ where,
|
|||||||
|
|
||||||
* q NQ: A number of queues (=ports) per lcore (default is 1)
|
* q NQ: A number of queues (=ports) per lcore (default is 1)
|
||||||
|
|
||||||
To run the application in linuxapp environment with 4 lcores, 16 ports and 8 RX queues per lcore, issue the command:
|
* --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default).
|
||||||
|
|
||||||
|
To run the application in linuxapp environment with 4 lcores, 16 ports and 8 RX queues per lcore and MAC address
|
||||||
|
updating enabled, issue the command:
|
||||||
|
|
||||||
.. code-block:: console
|
.. code-block:: console
|
||||||
|
|
||||||
@ -415,7 +425,8 @@ Packets are read in a burst of size MAX_PKT_BURST.
|
|||||||
The rte_eth_rx_burst() function writes the mbuf pointers in a local table and returns the number of available mbufs in the table.
|
The rte_eth_rx_burst() function writes the mbuf pointers in a local table and returns the number of available mbufs in the table.
|
||||||
|
|
||||||
Then, each mbuf in the table is processed by the l2fwd_simple_forward() function.
|
Then, each mbuf in the table is processed by the l2fwd_simple_forward() function.
|
||||||
The processing is very simple: process the TX port from the RX port, then replace the source and destination MAC addresses.
|
The processing is very simple: process the TX port from the RX port, then replace the source and destination MAC addresses if MAC
|
||||||
|
addresses updating is enabled.
|
||||||
|
|
||||||
.. note::
|
.. note::
|
||||||
|
|
||||||
|
|||||||
@ -73,6 +73,9 @@
|
|||||||
|
|
||||||
static volatile bool force_quit;
|
static volatile bool force_quit;
|
||||||
|
|
||||||
|
/* MAC updating enabled by default */
|
||||||
|
static int mac_updating = 1;
|
||||||
|
|
||||||
#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
|
#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
|
||||||
|
|
||||||
#define NB_MBUF 8192
|
#define NB_MBUF 8192
|
||||||
@ -185,23 +188,32 @@ print_stats(void)
|
|||||||
}
|
}
|
||||||
|
|
||||||
static void
|
static void
|
||||||
l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
|
l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid)
|
||||||
{
|
{
|
||||||
struct ether_hdr *eth;
|
struct ether_hdr *eth;
|
||||||
void *tmp;
|
void *tmp;
|
||||||
|
|
||||||
|
eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
|
||||||
|
|
||||||
|
/* 02:00:00:00:00:xx */
|
||||||
|
tmp = ð->d_addr.addr_bytes[0];
|
||||||
|
*((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);
|
||||||
|
|
||||||
|
/* src addr */
|
||||||
|
ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], ð->s_addr);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
|
||||||
|
{
|
||||||
unsigned dst_port;
|
unsigned dst_port;
|
||||||
int sent;
|
int sent;
|
||||||
struct rte_eth_dev_tx_buffer *buffer;
|
struct rte_eth_dev_tx_buffer *buffer;
|
||||||
|
|
||||||
dst_port = l2fwd_dst_ports[portid];
|
dst_port = l2fwd_dst_ports[portid];
|
||||||
eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
|
|
||||||
|
|
||||||
/* 02:00:00:00:00:xx */
|
if (mac_updating)
|
||||||
tmp = ð->d_addr.addr_bytes[0];
|
l2fwd_mac_updating(m, dst_port);
|
||||||
*((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
|
|
||||||
|
|
||||||
/* src addr */
|
|
||||||
ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], ð->s_addr);
|
|
||||||
|
|
||||||
buffer = tx_buffer[dst_port];
|
buffer = tx_buffer[dst_port];
|
||||||
sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
|
sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
|
||||||
@ -321,7 +333,11 @@ l2fwd_usage(const char *prgname)
|
|||||||
printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
|
printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
|
||||||
" -p PORTMASK: hexadecimal bitmask of ports to configure\n"
|
" -p PORTMASK: hexadecimal bitmask of ports to configure\n"
|
||||||
" -q NQ: number of queue (=ports) per lcore (default is 1)\n"
|
" -q NQ: number of queue (=ports) per lcore (default is 1)\n"
|
||||||
" -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n",
|
" -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
|
||||||
|
" --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
|
||||||
|
" When enabled:\n"
|
||||||
|
" - The source MAC address is replaced by the TX port MAC address\n"
|
||||||
|
" - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n",
|
||||||
prgname);
|
prgname);
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -385,6 +401,8 @@ l2fwd_parse_args(int argc, char **argv)
|
|||||||
int option_index;
|
int option_index;
|
||||||
char *prgname = argv[0];
|
char *prgname = argv[0];
|
||||||
static struct option lgopts[] = {
|
static struct option lgopts[] = {
|
||||||
|
{ "mac-updating", no_argument, &mac_updating, 1},
|
||||||
|
{ "no-mac-updating", no_argument, &mac_updating, 0},
|
||||||
{NULL, 0, 0, 0}
|
{NULL, 0, 0, 0}
|
||||||
};
|
};
|
||||||
|
|
||||||
@ -427,8 +445,7 @@ l2fwd_parse_args(int argc, char **argv)
|
|||||||
|
|
||||||
/* long options */
|
/* long options */
|
||||||
case 0:
|
case 0:
|
||||||
l2fwd_usage(prgname);
|
break;
|
||||||
return -1;
|
|
||||||
|
|
||||||
default:
|
default:
|
||||||
l2fwd_usage(prgname);
|
l2fwd_usage(prgname);
|
||||||
@ -541,6 +558,8 @@ main(int argc, char **argv)
|
|||||||
if (ret < 0)
|
if (ret < 0)
|
||||||
rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
|
rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
|
||||||
|
|
||||||
|
printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
|
||||||
|
|
||||||
/* convert to number of cycles */
|
/* convert to number of cycles */
|
||||||
timer_period *= rte_get_timer_hz();
|
timer_period *= rte_get_timer_hz();
|
||||||
|
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user