[dpdk-stable] [PATCH v2] net: fix stripped VLAN flag for offload emulation

[Thomas Monjalon <thomas@monjalon.net>]

From: Michał Mirosław <michal.miroslaw@atendesoftware.pl>

Apply the new flag PKT_RX_VLAN_STRIPPED to the software emulation case
(currently only for virtio and af_packet).

Fixes: b37b528d957c ("mbuf: add new Rx flags for stripped VLAN")
Cc: stable@dpdk.org

Signed-off-by: Michał Mirosław <michal.miroslaw@atendesoftware.pl>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
---
v2: add explanations and update rte_vlan_insert()
---
 lib/librte_net/rte_ether.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/librte_net/rte_ether.h b/lib/librte_net/rte_ether.h
index ff3d06540..5edf66c3f 100644
--- a/lib/librte_net/rte_ether.h
+++ b/lib/librte_net/rte_ether.h
@@ -357,7 +357,7 @@ static inline int rte_vlan_strip(struct rte_mbuf *m)
 		return -1;
 
 	struct vlan_hdr *vh = (struct vlan_hdr *)(eh + 1);
-	m->ol_flags |= PKT_RX_VLAN_PKT;
+	m->ol_flags |= PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED;
 	m->vlan_tci = rte_be_to_cpu_16(vh->vlan_tci);
 
 	/* Copy ether header over rather than moving whole packet */
@@ -407,6 +407,8 @@ static inline int rte_vlan_insert(struct rte_mbuf **m)
 	vh = (struct vlan_hdr *) (nh + 1);
 	vh->vlan_tci = rte_cpu_to_be_16((*m)->vlan_tci);
 
+	(*m)->ol_flags &= ~PKT_RX_VLAN_STRIPPED;
+
 	return 0;
 }
 
-- 
2.12.2