[PATCH] mbuf: expose outer vlan in mbuf dump

[Ben Magistro <koncept1@gmail.com>]

Enable printing of the outer vlan if flags indicate it is present.

Signed-off-by: Ben Magistro <koncept1@gmail.com>

---

While troubleshooting some QinQ offloads with various Intel i40e firmware[1], it was
helpful to expose the outer vlan in the dump mbuf calls.  This should be straightforward
to backport and happy to do the work if accepted. I understand that this may not be a
widely supported capability at this time, so we are okay if this is not accepted and
we just maintain a local patch.

---
 lib/mbuf/rte_mbuf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/mbuf/rte_mbuf.c b/lib/mbuf/rte_mbuf.c
index 87592faccb..a2307cebe6 100644
--- a/lib/mbuf/rte_mbuf.c
+++ b/lib/mbuf/rte_mbuf.c
@@ -674,6 +674,9 @@ rte_pktmbuf_dump(FILE *f, const struct rte_mbuf *m, unsigned dump_len)
 	fprintf(f, "  pkt_len=%u, ol_flags=%#"PRIx64", nb_segs=%u, port=%u",
 		m->pkt_len, m->ol_flags, m->nb_segs, m->port);
 
+	if (m->ol_flags & (RTE_MBUF_F_RX_QINQ | RTE_MBUF_F_TX_QINQ))
+		fprintf(f, ", vlan_tci_outer=%u", m->vlan_tci_outer);
+
 	if (m->ol_flags & (RTE_MBUF_F_RX_VLAN | RTE_MBUF_F_TX_VLAN))
 		fprintf(f, ", vlan_tci=%u", m->vlan_tci);
 
-- 
2.27.0