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net/vhost: free consumed Tx buffers on demand

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Add support to the vHostdriver for the new API to force free consumed
buffers on Tx ring. vHost does not cache the mbufs so there is no work
to do.

Signed-off-by: Billy McFall <bmcfall@redhat.com>
Acked-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>
This commit is contained in:
Billy McFall 2017-03-24 14:55:55 -04:00 committed by Thomas Monjalon
parent 8d907d2b79
commit 5b2976c718
2 changed files with 12 additions and 0 deletions
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1
doc/guides/nics/features/vhost.ini
View File

@ -6,6 +6,7 @@
[Features]
Link status = Y
Link status event = Y
Free Tx mbuf on demand = Y
Queue status event = Y
Basic stats = Y
Extended stats = Y

11
drivers/net/vhost/rte_eth_vhost.c
View File

@ -959,6 +959,16 @@ eth_queue_release(void *q)
rte_free(q);
}
static int
eth_tx_done_cleanup(void *txq __rte_unused, uint32_t free_cnt __rte_unused)
{
/*
* vHost does not hang onto mbuf. eth_vhost_tx() copies packet data
* and releases mbuf, so nothing to cleanup.
*/
return 0;
}
static int
eth_link_update(struct rte_eth_dev *dev __rte_unused,
int wait_to_complete __rte_unused)
@ -1001,6 +1011,7 @@ static const struct eth_dev_ops ops = {
.tx_queue_setup = eth_tx_queue_setup,
.rx_queue_release = eth_queue_release,
.tx_queue_release = eth_queue_release,
.tx_done_cleanup = eth_tx_done_cleanup,
.link_update = eth_link_update,
.stats_get = eth_stats_get,
.stats_reset = eth_stats_reset,