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examples/vhost: remove dequeue zero-copy support

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Dequeue zero-copy feature is being removed from the
Vhost library. This preliminary patch removes its uses
in the Vhost example application.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
This commit is contained in:
Maxime Coquelin 2020-09-28 11:17:11 +02:00 committed by Ferruh Yigit
parent c08736b389
commit 9ea8d28986
1 changed files with 1 additions and 17 deletions

18
examples/vhost/main.c

@ -92,7 +92,6 @@ static uint32_t enable_tx_csum;
static uint32_t enable_tso;
static int client_mode;
static int dequeue_zero_copy;
static int builtin_net_driver;
@ -247,16 +246,6 @@ port_init(uint16_t port)
rx_ring_size = RTE_TEST_RX_DESC_DEFAULT;
tx_ring_size = RTE_TEST_TX_DESC_DEFAULT;
/*
* When dequeue zero copy is enabled, guest Tx used vring will be
* updated only when corresponding mbuf is freed. Thus, the nb_tx_desc
* (tx_ring_size here) must be small enough so that the driver will
* hit the free threshold easily and free mbufs timely. Otherwise,
* guest Tx vring would be starved.
*/
if (dequeue_zero_copy)
tx_ring_size = 64;
tx_rings = (uint16_t)rte_lcore_count();
/* Get port configuration. */
@ -457,8 +446,7 @@ us_vhost_usage(const char *prgname)
" --socket-file: The path of the socket file.\n"
" --tx-csum [0|1] disable/enable TX checksum offload.\n"
" --tso [0|1] disable/enable TCP segment offload.\n"
" --client register a vhost-user socket as client mode.\n"
" --dequeue-zero-copy enables dequeue zero copy\n",
" --client register a vhost-user socket as client mode.\n",
prgname);
}
@ -483,7 +471,6 @@ us_vhost_parse_args(int argc, char **argv)
{"tx-csum", required_argument, NULL, 0},
{"tso", required_argument, NULL, 0},
{"client", no_argument, &client_mode, 1},
{"dequeue-zero-copy", no_argument, &dequeue_zero_copy, 1},
{"builtin-net-driver", no_argument, &builtin_net_driver, 1},
{NULL, 0, 0, 0},
};
@ -1510,9 +1497,6 @@ main(int argc, char *argv[])
if (client_mode)
flags |= RTE_VHOST_USER_CLIENT;
if (dequeue_zero_copy)
flags |= RTE_VHOST_USER_DEQUEUE_ZERO_COPY;
/* Register vhost user driver to handle vhost messages. */
for (i = 0; i < nb_sockets; i++) {
char *file = socket_files + i * PATH_MAX;