[dpdk-dev] [PATCH 2/2] net/vhost: insert/strip VLAN header in software
Chas Williams
3chas3 at gmail.com
Thu Mar 29 18:05:07 CEST 2018
From: Jan Blunck <jblunck at infradead.org>
This lets the vhost driver handle the VLAN header like the virtio driver
in software.
Signed-off-by: Jan Blunck <jblunck at infradead.org>
---
drivers/net/vhost/rte_eth_vhost.c | 35 ++++++++++++++++++++++++++++++++++-
1 file changed, 34 insertions(+), 1 deletion(-)
diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c
index 453d9bee1..0beb28e94 100644
--- a/drivers/net/vhost/rte_eth_vhost.c
+++ b/drivers/net/vhost/rte_eth_vhost.c
@@ -119,6 +119,7 @@ struct pmd_internal {
uint16_t max_queues;
rte_atomic32_t started;
int vid;
+ 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;
}
--
2.13.6
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