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net/vhost: insert/strip VLAN header in software

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This lets the vhost driver handle the VLAN header like the virtio driver
in software.

Signed-off-by: Jan Blunck <jblunck@infradead.org>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Jan Blunck 2018-03-29 12:05:07 -04:00 committed by Ferruh Yigit
parent caccf8b318
commit f63d356ee9
1 changed files with 34 additions and 1 deletions
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35
drivers/net/vhost/rte_eth_vhost.c
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@ -119,6 +119,7 @@ struct pmd_internal {
uint16_t max_queues;
uint16_t vid;
rte_atomic32_t started;
uint8_t vlan_strip;
};
struct internal_list {
@ -422,6 +423,12 @@ eth_vhost_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
for (i = 0; likely(i < nb_rx); i++) {
bufs[i]->port = r->port;
bufs[i]->ol_flags = 0;
bufs[i]->vlan_tci = 0;
if (r->internal->vlan_strip)
rte_vlan_strip(bufs[i]);
r->stats.bytes += bufs[i]->pkt_len;
}
@ -438,7 +445,7 @@ eth_vhost_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
{
struct vhost_queue *r = q;
uint16_t i, nb_tx = 0;
uint16_t nb_send = nb_bufs;
uint16_t nb_send = 0;
if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0))
return 0;
@ -448,6 +455,22 @@ eth_vhost_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0))
goto out;
for (i = 0; i < nb_bufs; i++) {
struct rte_mbuf *m = bufs[i];
/* Do VLAN tag insertion */
if (m->ol_flags & PKT_TX_VLAN_PKT) {
int error = rte_vlan_insert(&m);
if (unlikely(error)) {
rte_pktmbuf_free(m);
continue;
}
}
bufs[nb_send] = m;
++nb_send;
}
/* Enqueue packets to guest RX queue */
while (nb_send) {
uint16_t nb_pkts;
@ -489,6 +512,16 @@ eth_vhost_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
static int
eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
{
struct pmd_internal *internal = dev->data->dev_private;
const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
internal->vlan_strip = rxmode->hw_vlan_strip;
if (rxmode->hw_vlan_filter)
RTE_LOG(WARNING, PMD,
"vhost(%s): vlan filtering not available\n",
internal->dev_name);
return 0;
}