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examples/ioat: add option to control maximum frame size

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Add command line option for setting the max frame size.

Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Reviewed-by: Conor Walsh <conor.walsh@intel.com>
This commit is contained in:
Konstantin Ananyev 2021-10-26 13:14:27 +00:00 committed by Thomas Monjalon
parent 198db0c9e2
commit 8a256e97fb
2 changed files with 24 additions and 3 deletions
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4
doc/guides/sample_app_ug/ioat.rst
View File

@ -46,7 +46,7 @@ The application requires a number of command line options:
.. code-block:: console
./<build_dir>/examples/dpdk-ioat [EAL options] -- [-p MASK] [-q NQ] [-s RS] [-c <sw|hw>]
[--[no-]mac-updating] [-b BS]
[--[no-]mac-updating] [-b BS] [-f FS]
where,
@ -66,6 +66,8 @@ where,
* b BS: set the DMA batch size
* f FS: set the max frame size
The application can be launched in various configurations depending on
provided parameters. The app can use up to 2 lcores: one of them receives
incoming traffic and makes a copy of each packet. The second lcore then

23
examples/ioat/ioatfwd.c
View File

@ -25,6 +25,7 @@
#define CMD_LINE_OPT_COPY_TYPE "copy-type"
#define CMD_LINE_OPT_RING_SIZE "ring-size"
#define CMD_LINE_OPT_BATCH_SIZE "dma-batch-size"
#define CMD_LINE_OPT_FRAME_SIZE "max-frame-size"
/* configurable number of RX/TX ring descriptors */
#define RX_DEFAULT_RINGSIZE 1024
@ -104,6 +105,7 @@ static uint16_t nb_txd = TX_DEFAULT_RINGSIZE;
static volatile bool force_quit;
static uint32_t ioat_batch_sz = MAX_PKT_BURST;
static uint32_t max_frame_size = RTE_ETHER_MAX_LEN;
/* ethernet addresses of ports */
static struct rte_ether_addr ioat_ports_eth_addr[RTE_MAX_ETHPORTS];
@ -604,6 +606,7 @@ ioat_usage(const char *prgname)
{
printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
" -b --dma-batch-size: number of requests per DMA batch\n"
" -f --max-frame-size: max frame size\n"
" -p --portmask: hexadecimal bitmask of ports to configure\n"
" -q NQ: number of RX queues per port (default is 1)\n"
" --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
@ -647,6 +650,7 @@ ioat_parse_args(int argc, char **argv, unsigned int nb_ports)
static const char short_options[] =
"b:" /* dma batch size */
"c:" /* copy type (sw|hw) */
"f:" /* max frame size */
"p:" /* portmask */
"q:" /* number of RX queues per port */
"s:" /* ring size */
@ -660,6 +664,7 @@ ioat_parse_args(int argc, char **argv, unsigned int nb_ports)
{CMD_LINE_OPT_COPY_TYPE, required_argument, NULL, 'c'},
{CMD_LINE_OPT_RING_SIZE, required_argument, NULL, 's'},
{CMD_LINE_OPT_BATCH_SIZE, required_argument, NULL, 'b'},
{CMD_LINE_OPT_FRAME_SIZE, required_argument, NULL, 'f'},
{NULL, 0, 0, 0}
};
@ -684,6 +689,15 @@ ioat_parse_args(int argc, char **argv, unsigned int nb_ports)
return -1;
}
break;
case 'f':
max_frame_size = atoi(optarg);
if (max_frame_size > RTE_ETHER_MAX_JUMBO_FRAME_LEN) {
printf("Invalid max frame size, %s.\n", optarg);
ioat_usage(prgname);
return -1;
}
break;
/* portmask */
case 'p':
ioat_enabled_port_mask = ioat_parse_portmask(optarg);
@ -879,6 +893,9 @@ port_init(uint16_t portid, struct rte_mempool *mbuf_pool, uint16_t nb_queues)
struct rte_eth_dev_info dev_info;
int ret, i;
if (max_frame_size > local_port_conf.rxmode.mtu)
local_port_conf.rxmode.mtu = max_frame_size;
/* Skip ports that are not enabled */
if ((ioat_enabled_port_mask & (1 << portid)) == 0) {
printf("Skipping disabled port %u\n", portid);
@ -989,6 +1006,7 @@ main(int argc, char **argv)
uint16_t nb_ports, portid;
uint32_t i;
unsigned int nb_mbufs;
size_t sz;
/* Init EAL. 8< */
ret = rte_eal_init(argc, argv);
@ -1018,9 +1036,10 @@ main(int argc, char **argv)
MIN_POOL_SIZE);
/* Create the mbuf pool */
sz = max_frame_size + RTE_PKTMBUF_HEADROOM;
sz = RTE_MAX(sz, (size_t)RTE_MBUF_DEFAULT_BUF_SIZE);
ioat_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs,
MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
rte_socket_id());
MEMPOOL_CACHE_SIZE, 0, sz, rte_socket_id());
if (ioat_pktmbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
/* >8 End of allocates mempool to hold the mbufs. */