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examples/vhost: mergeable buffer option

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Mergeable feature doesn't work with latest mbuf change.
Disabling IXGBE_INC_VECTOR is a temporary workaround.

Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Changchun Ouyang <changchun.ouyang@intel.com>
This commit is contained in:
Huawei Xie 2014-10-23 11:21:13 +02:00 committed by Thomas Monjalon
parent 4d50b6acbd
commit 28deb0204b
1 changed files with 12 additions and 5 deletions
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17
examples/vhost/main.c
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@ -99,7 +99,6 @@
#define TX_WTHRESH 0 /* Default values of TX write-back threshold reg. */
#define MAX_PKT_BURST 32 /* Max burst size for RX/TX */
#define MAX_MRG_PKT_BURST 16 /* Max burst for merge buffers. Set to 1 due to performance issue. */
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
#define BURST_RX_WAIT_US 15 /* Defines how long we wait between retries on RX */
@ -174,6 +173,7 @@ uint32_t num_devices = 0;
* disabled on default.
*/
static uint32_t zero_copy;
static int mergeable;
/* number of descriptors to apply*/
static uint32_t num_rx_descriptor = RTE_TEST_RX_DESC_DEFAULT_ZCP;
@ -218,9 +218,6 @@ static uint32_t burst_rx_retry_num = BURST_RX_RETRIES;
static char dev_basename[MAX_BASENAME_SZ] = "vhost-net";
/* This can be set by the user so it is made available here. */
extern uint64_t VHOST_FEATURES;
/* Default configuration for rx and tx thresholds etc. */
static struct rte_eth_rxconf rx_conf_default = {
.rx_thresh = {
@ -673,11 +670,11 @@ us_vhost_parse_args(int argc, char **argv)
us_vhost_usage(prgname);
return -1;
} else {
mergeable = !!ret;
if (ret) {
vmdq_conf_default.rxmode.jumbo_frame = 1;
vmdq_conf_default.rxmode.max_rx_pkt_len
= JUMBO_FRAME_MAX_SIZE;
VHOST_FEATURES = (1ULL << VIRTIO_NET_F_MRG_RXBUF);
}
}
}
@ -2876,6 +2873,13 @@ MAIN(int argc, char *argv[])
ret = us_vhost_parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid argument\n");
#ifdef RTE_IXGBE_INC_VECTOR
if (mergeable == 1) {
rte_exit(EXIT_FAILURE,
"sorry, mergeable feature doesn't work with vec sg recv, " \
"please disable it in cfg as a workaround\n");
}
#endif
for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id ++)
if (rte_lcore_is_enabled(lcore_id))
@ -3040,6 +3044,9 @@ MAIN(int argc, char *argv[])
lcore_id);
}
if (mergeable == 0)
rte_vhost_feature_disable(1ULL << VIRTIO_NET_F_MRG_RXBUF);
/* Register CUSE device to handle IOCTLs. */
ret = rte_vhost_driver_register((char *)&dev_basename);
if (ret != 0)