[PATCH v3 3/3] net/vhost: vHost support to free consumed buffers
From: Billy McFall <hidden>
Date: 2017-01-20 16:01:19
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> --- drivers/net/vhost/rte_eth_vhost.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c
index 848a3da..6674536 100644
--- a/drivers/net/vhost/rte_eth_vhost.c
+++ b/drivers/net/vhost/rte_eth_vhost.c@@ -934,6 +934,16 @@ eth_queue_release(void *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) {
@@ -974,6 +984,7 @@ 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,
--
2.9.3