Hi Olivier,
> -----Original Message-----
> From: Olivier Matz [mailto:olivier.matz at 6wind.com]
> Sent: Monday, May 23, 2016 9:47 AM
> To: dev at dpdk.org
> Cc: johndale at cisco.com; Ananyev, Konstantin; Zhang, Helin;
> adrien.mazarguil at 6wind.com; rahul.lakkireddy at chelsio.com;
> alejandro.lucero at netronome.com; sony.chacko at qlogic.com
> Subject: [PATCH] mbuf: new flag when Vlan is stripped
>
> The behavior of PKT_RX_VLAN_PKT was not very well defined, resulting in
> PMDs not advertising the same flags in similar conditions.
>
> Following discussion in [1], introduce 2 new flags PKT_RX_VLAN_STRIPPED
> and PKT_RX_QINQ_STRIPPED that are better defined:
>
> PKT_RX_VLAN_STRIPPED: a vlan has been stripped by the hardware and its
> tci is saved in mbuf->vlan_tci. This can only happen if vlan stripping
> is enabled in the RX configuration of the PMD.
>
> For now, the old flag PKT_RX_VLAN_PKT is kept but marked as deprecated.
> It should be removed from applications and PMDs in a future revision.
>
> This patch also updates the drivers. For PKT_RX_VLAN_PKT:
>
> - e1000, enic, i40e, mlx5, nfp, vmxnet3: done, PKT_RX_VLAN_PKT already
> had the same meaning than PKT_RX_VLAN_STRIPPED, minor update is
> required.
> - fm10k: done, PKT_RX_VLAN_PKT already had the same meaning than
> PKT_RX_VLAN_STRIPPED, and vlan stripping is always enabled on fm10k.
> - ixgbe: modification done for standard mode (vector does not support
> vlan stripping)
> - the other drivers do not support vlan stripping.
>
> For PKT_RX_QINQ_PKT, it was only supported on i40e, and the meaning was
> already correct, so we can reuse the same value for PKT_RX_QINQ_STRIPPED.
>
> [1] http://dpdk.org/ml/archives/dev/2016-April/037837.html,
>
> Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
> ---
>
> RFC -> v1:
> - fix checkpatch and check-git-log.sh issues
> - add a deprecation notice for the old vlan flags
> - rebase on head
>
>
> app/test-pmd/rxonly.c | 4 +--
> doc/guides/rel_notes/deprecation.rst | 5 ++++
> drivers/net/e1000/em_rxtx.c | 3 ++-
> drivers/net/e1000/igb_rxtx.c | 3 ++-
> drivers/net/enic/enic_rx.c | 2 +-
> drivers/net/i40e/i40e_rxtx.c | 2 +-
> drivers/net/ixgbe/ixgbe_ethdev.c | 7 +++++
> drivers/net/ixgbe/ixgbe_rxtx.c | 21 +++++++++++----
> drivers/net/ixgbe/ixgbe_rxtx.h | 1 +
> drivers/net/mlx5/mlx5_rxtx.c | 6 +++--
> drivers/net/nfp/nfp_net.c | 2 +-
> drivers/net/vmxnet3/vmxnet3_rxtx.c | 2 +-
> lib/librte_mbuf/rte_mbuf.c | 2 ++
> lib/librte_mbuf/rte_mbuf.h | 50
> ++++++++++++++++++++++++++++++++----
> 14 files changed, 90 insertions(+), 20 deletions(-)
I don't see ixgbe/i4oe_rxtx_vec.c updated.
Would it be another patch for them?
Thanks
Konstantin
>
> diff --git a/app/test-pmd/rxonly.c b/app/test-pmd/rxonly.c
> index 14555ab..c69b344 100644
> --- a/app/test-pmd/rxonly.c
> +++ b/app/test-pmd/rxonly.c
> @@ -156,9 +156,9 @@ pkt_burst_receive(struct fwd_stream *fs)
> printf("hash=0x%x ID=0x%x ",
> mb->hash.fdir.hash, mb->hash.fdir.id);
> }
> - if (ol_flags & PKT_RX_VLAN_PKT)
> + if (ol_flags & PKT_RX_VLAN_STRIPPED)
> printf(" - VLAN tci=0x%x", mb->vlan_tci);
> - if (ol_flags & PKT_RX_QINQ_PKT)
> + if (ol_flags & PKT_RX_QINQ_STRIPPED)
> printf(" - QinQ VLAN tci=0x%x, VLAN tci outer=0x%x",
> mb->vlan_tci, mb->vlan_tci_outer);
> if (mb->packet_type) {
> diff --git a/doc/guides/rel_notes/deprecation.rst
> b/doc/guides/rel_notes/deprecation.rst
> index ad05eba..2233a90 100644
> --- a/doc/guides/rel_notes/deprecation.rst
> +++ b/doc/guides/rel_notes/deprecation.rst
> @@ -57,3 +57,8 @@ Deprecation Notices
> a handle, like the way kernel exposes an fd to user for locating a
> specific file, and to keep all major structures internally, so that
> we are likely to be free from ABI violations in future.
> +
> +* The mbuf flags PKT_RX_VLAN_PKT and PKT_RX_QINQ_PKT are deprecated and
> + are respectively replaced by PKT_RX_VLAN_STRIPPED and
> + PKT_RX_QINQ_STRIPPED, that are better described. The old flags and
> + their behavior will be kept in 16.07 and will be removed in 16.11.
> diff --git a/drivers/net/e1000/em_rxtx.c b/drivers/net/e1000/em_rxtx.c
> index 3d36f21..6d8750a 100644
> --- a/drivers/net/e1000/em_rxtx.c
> +++ b/drivers/net/e1000/em_rxtx.c
> @@ -629,7 +629,8 @@ rx_desc_status_to_pkt_flags(uint32_t rx_status)
> uint64_t pkt_flags;
>
> /* Check if VLAN present */
> - pkt_flags = ((rx_status & E1000_RXD_STAT_VP) ? PKT_RX_VLAN_PKT : 0);
> + pkt_flags = ((rx_status & E1000_RXD_STAT_VP) ?
> + PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED : 0);
>
> return pkt_flags;
> }
> diff --git a/drivers/net/e1000/igb_rxtx.c b/drivers/net/e1000/igb_rxtx.c
> index 18aeead..9d80a0b 100644
> --- a/drivers/net/e1000/igb_rxtx.c
> +++ b/drivers/net/e1000/igb_rxtx.c
> @@ -729,7 +729,8 @@ rx_desc_status_to_pkt_flags(uint32_t rx_status)
> uint64_t pkt_flags;
>
> /* Check if VLAN present */
> - pkt_flags = (rx_status & E1000_RXD_STAT_VP) ? PKT_RX_VLAN_PKT : 0;
> + pkt_flags = ((rx_status & E1000_RXD_STAT_VP) ?
> + PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED : 0);
>
> #if defined(RTE_LIBRTE_IEEE1588)
> if (rx_status & E1000_RXD_STAT_TMST)
> diff --git a/drivers/net/enic/enic_rx.c b/drivers/net/enic/enic_rx.c
> index f92f6bc..6459e97 100644
> --- a/drivers/net/enic/enic_rx.c
> +++ b/drivers/net/enic/enic_rx.c
> @@ -197,7 +197,7 @@ enic_cq_rx_to_pkt_flags(struct cq_desc *cqd, struct
> rte_mbuf *mbuf)
>
> /* VLAN stripping */
> if (bwflags & CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) {
> - pkt_flags |= PKT_RX_VLAN_PKT;
> + pkt_flags |= PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED;
> mbuf->vlan_tci = enic_cq_rx_desc_vlan(cqrd);
> } else {
> mbuf->vlan_tci = 0;
> diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
> index c833aa3..aa161a9 100644
> --- a/drivers/net/i40e/i40e_rxtx.c
> +++ b/drivers/net/i40e/i40e_rxtx.c
> @@ -99,7 +99,7 @@ i40e_rxd_to_vlan_tci(struct rte_mbuf *mb, volatile union
> i40e_rx_desc *rxdp)
> #ifndef RTE_LIBRTE_I40E_16BYTE_RX_DESC
> if (rte_le_to_cpu_16(rxdp->wb.qword2.ext_status) &
> (1 << I40E_RX_DESC_EXT_STATUS_L2TAG2P_SHIFT)) {
> - mb->ol_flags |= PKT_RX_QINQ_PKT;
> + mb->ol_flags |= PKT_RX_QINQ_STRIPPED;
> mb->vlan_tci_outer = mb->vlan_tci;
> mb->vlan_tci = rte_le_to_cpu_16(rxdp->wb.qword2.l2tag2_2);
> PMD_RX_LOG(DEBUG, "Descriptor l2tag2_1: %u, l2tag2_2: %u",
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c
> b/drivers/net/ixgbe/ixgbe_ethdev.c
> index a2b170b..e7717e3 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -1636,6 +1636,7 @@ ixgbe_vlan_hw_strip_bitmap_set(struct rte_eth_dev *dev,
> uint16_t queue, bool on)
> {
> struct ixgbe_hwstrip *hwstrip =
> IXGBE_DEV_PRIVATE_TO_HWSTRIP_BITMAP(dev->data->dev_private);
> + struct ixgbe_rx_queue *rxq;
>
> if (queue >= IXGBE_MAX_RX_QUEUE_NUM)
> return;
> @@ -1644,6 +1645,12 @@ ixgbe_vlan_hw_strip_bitmap_set(struct rte_eth_dev
> *dev, uint16_t queue, bool on)
> IXGBE_SET_HWSTRIP(hwstrip, queue);
> else
> IXGBE_CLEAR_HWSTRIP(hwstrip, queue);
> +
> + if (queue >= dev->data->nb_rx_queues)
> + return;
> +
> + rxq = dev->data->rx_queues[queue];
> + rxq->vlan_strip = on;
> }
>
> static void
> diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
> index 9c6eaf2..3d740df 100644
> --- a/drivers/net/ixgbe/ixgbe_rxtx.c
> +++ b/drivers/net/ixgbe/ixgbe_rxtx.c
> @@ -1221,16 +1221,23 @@ ixgbe_rxd_pkt_info_to_pkt_flags(uint16_t pkt_info)
> }
>
> static inline uint64_t
> -rx_desc_status_to_pkt_flags(uint32_t rx_status)
> +rx_desc_status_to_pkt_flags(uint32_t rx_status, uint8_t vlan_strip)
> {
> uint64_t pkt_flags;
> + uint64_t vlan_flags;
> +
> + /* if vlan is stripped, set the proper flag */
> + if (vlan_strip)
> + vlan_flags = PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED;
> + else
> + vlan_flags = PKT_RX_VLAN_PKT;
>
> /*
> * Check if VLAN present only.
> * Do not check whether L3/L4 rx checksum done by NIC or not,
> * That can be found from rte_eth_rxmode.hw_ip_checksum flag
> */
> - pkt_flags = (rx_status & IXGBE_RXD_STAT_VP) ? PKT_RX_VLAN_PKT : 0;
> + pkt_flags = (rx_status & IXGBE_RXD_STAT_VP) ? vlan_flags : 0;
>
> #ifdef RTE_LIBRTE_IEEE1588
> if (rx_status & IXGBE_RXD_STAT_TMST)
> @@ -1287,6 +1294,7 @@ ixgbe_rx_scan_hw_ring(struct ixgbe_rx_queue *rxq)
> uint32_t pkt_info[LOOK_AHEAD];
> int i, j, nb_rx = 0;
> uint32_t status;
> + uint8_t vlan_strip = rxq->vlan_strip;
>
> /* get references to current descriptor and S/W ring entry */
> rxdp = &rxq->rx_ring[rxq->rx_tail];
> @@ -1328,7 +1336,8 @@ ixgbe_rx_scan_hw_ring(struct ixgbe_rx_queue *rxq)
> mb->vlan_tci = rte_le_to_cpu_16(rxdp[j].wb.upper.vlan);
>
> /* convert descriptor fields to rte mbuf flags */
> - pkt_flags = rx_desc_status_to_pkt_flags(s[j]);
> + pkt_flags = rx_desc_status_to_pkt_flags(s[j],
> + vlan_strip);
> pkt_flags |= rx_desc_error_to_pkt_flags(s[j]);
> pkt_flags |= ixgbe_rxd_pkt_info_to_pkt_flags
> ((uint16_t)pkt_info[j]);
> @@ -1544,6 +1553,7 @@ ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf
> **rx_pkts,
> uint16_t nb_rx;
> uint16_t nb_hold;
> uint64_t pkt_flags;
> + uint8_t vlan_strip;
>
> nb_rx = 0;
> nb_hold = 0;
> @@ -1551,6 +1561,7 @@ ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf
> **rx_pkts,
> rx_id = rxq->rx_tail;
> rx_ring = rxq->rx_ring;
> sw_ring = rxq->sw_ring;
> + vlan_strip = rxq->vlan_strip;
> while (nb_rx < nb_pkts) {
> /*
> * The order of operations here is important as the DD status
> @@ -1660,7 +1671,7 @@ ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf
> **rx_pkts,
> /* Only valid if PKT_RX_VLAN_PKT set in pkt_flags */
> rxm->vlan_tci = rte_le_to_cpu_16(rxd.wb.upper.vlan);
>
> - pkt_flags = rx_desc_status_to_pkt_flags(staterr);
> + pkt_flags = rx_desc_status_to_pkt_flags(staterr, vlan_strip);
> pkt_flags = pkt_flags | rx_desc_error_to_pkt_flags(staterr);
> pkt_flags = pkt_flags |
> ixgbe_rxd_pkt_info_to_pkt_flags((uint16_t)pkt_info);
> @@ -1753,7 +1764,7 @@ ixgbe_fill_cluster_head_buf(
> */
> head->vlan_tci = rte_le_to_cpu_16(desc->wb.upper.vlan);
> pkt_info = rte_le_to_cpu_32(desc->wb.lower.lo_dword.data);
> - pkt_flags = rx_desc_status_to_pkt_flags(staterr);
> + pkt_flags = rx_desc_status_to_pkt_flags(staterr, rxq->vlan_strip);
> pkt_flags |= rx_desc_error_to_pkt_flags(staterr);
> pkt_flags |= ixgbe_rxd_pkt_info_to_pkt_flags((uint16_t)pkt_info);
> head->ol_flags = pkt_flags;
> diff --git a/drivers/net/ixgbe/ixgbe_rxtx.h b/drivers/net/ixgbe/ixgbe_rxtx.h
> index 3691a19..9ca0e8b 100644
> --- a/drivers/net/ixgbe/ixgbe_rxtx.h
> +++ b/drivers/net/ixgbe/ixgbe_rxtx.h
> @@ -146,6 +146,7 @@ struct ixgbe_rx_queue {
> uint8_t crc_len; /**< 0 if CRC stripped, 4 otherwise. */
> uint8_t drop_en; /**< If not 0, set SRRCTL.Drop_En. */
> uint8_t rx_deferred_start; /**< not in global dev start. */
> + uint8_t vlan_strip; /**< 1 if vlan stripping enabled. */
> /** need to alloc dummy mbuf, for wraparound when scanning hw ring */
> struct rte_mbuf fake_mbuf;
> /** hold packets to return to application */
> diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
> index 13c8d71..ac96fc9 100644
> --- a/drivers/net/mlx5/mlx5_rxtx.c
> +++ b/drivers/net/mlx5/mlx5_rxtx.c
> @@ -1051,7 +1051,8 @@ mlx5_rx_burst_sp(void *dpdk_rxq, struct rte_mbuf
> **pkts, uint16_t pkts_n)
> pkt_buf->ol_flags = rxq_cq_to_ol_flags(rxq, flags);
> #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
> if (flags & IBV_EXP_CQ_RX_CVLAN_STRIPPED_V1) {
> - pkt_buf->ol_flags |= PKT_RX_VLAN_PKT;
> + pkt_buf->ol_flags |= PKT_RX_VLAN_PKT |
> + PKT_RX_VLAN_STRIPPED;
> pkt_buf->vlan_tci = vlan_tci;
> }
> #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
> @@ -1207,7 +1208,8 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts,
> uint16_t pkts_n)
> seg->ol_flags = rxq_cq_to_ol_flags(rxq, flags);
> #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
> if (flags & IBV_EXP_CQ_RX_CVLAN_STRIPPED_V1) {
> - seg->ol_flags |= PKT_RX_VLAN_PKT;
> + seg->ol_flags |= PKT_RX_VLAN_PKT |
> + PKT_RX_VLAN_STRIPPED;
> seg->vlan_tci = vlan_tci;
> }
> #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
> diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
> index ea5a2a3..5c9f350 100644
> --- a/drivers/net/nfp/nfp_net.c
> +++ b/drivers/net/nfp/nfp_net.c
> @@ -1800,7 +1800,7 @@ nfp_net_recv_pkts(void *rx_queue, struct rte_mbuf
> **rx_pkts, uint16_t nb_pkts)
> if ((rxds->rxd.flags & PCIE_DESC_RX_VLAN) &&
> (hw->ctrl & NFP_NET_CFG_CTRL_RXVLAN)) {
> mb->vlan_tci = rte_cpu_to_le_32(rxds->rxd.vlan);
> - mb->ol_flags |= PKT_RX_VLAN_PKT;
> + mb->ol_flags |= PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED;
> }
>
> /* Adding the mbuff to the mbuff array passed by the app */
> diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c
> b/drivers/net/vmxnet3/vmxnet3_rxtx.c
> index 9fe8752..ccafc0c 100644
> --- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
> +++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
> @@ -579,7 +579,7 @@ vmxnet3_rx_offload(const Vmxnet3_RxCompDesc *rcd, struct
> rte_mbuf *rxm)
> {
> /* Check for hardware stripped VLAN tag */
> if (rcd->ts) {
> - rxm->ol_flags |= PKT_RX_VLAN_PKT;
> + rxm->ol_flags |= (PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED);
> rxm->vlan_tci = rte_le_to_cpu_16((uint16_t)rcd->tci);
> }
>
> diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
> index eec1456..2ece742 100644
> --- a/lib/librte_mbuf/rte_mbuf.c
> +++ b/lib/librte_mbuf/rte_mbuf.c
> @@ -258,8 +258,10 @@ const char *rte_get_rx_ol_flag_name(uint64_t mask)
> /* case PKT_RX_HBUF_OVERFLOW: return "PKT_RX_HBUF_OVERFLOW"; */
> /* case PKT_RX_RECIP_ERR: return "PKT_RX_RECIP_ERR"; */
> /* case PKT_RX_MAC_ERR: return "PKT_RX_MAC_ERR"; */
> + case PKT_RX_VLAN_STRIPPED: return "PKT_RX_VLAN_STRIPPED";
> case PKT_RX_IEEE1588_PTP: return "PKT_RX_IEEE1588_PTP";
> case PKT_RX_IEEE1588_TMST: return "PKT_RX_IEEE1588_TMST";
> + case PKT_RX_QINQ_STRIPPED: return "PKT_RX_QINQ_STRIPPED";
> default: return NULL;
> }
> }
> diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
> index 48911a6..5b8a11a 100644
> --- a/lib/librte_mbuf/rte_mbuf.h
> +++ b/lib/librte_mbuf/rte_mbuf.h
> @@ -79,7 +79,16 @@ extern "C" {
> * Keep these flags synchronized with rte_get_rx_ol_flag_name() and
> * rte_get_tx_ol_flag_name().
> */
> -#define PKT_RX_VLAN_PKT (1ULL << 0) /**< RX packet is a 802.1q VLAN
> packet. */
> +
> +/**
> + * Deprecated.
> + * RX packet is a 802.1q VLAN packet. This flag was set by PMDs when
> + * the packet is recognized as a VLAN, but the behavior between PMDs
> + * was not the same. This flag is kept for some time to avoid breaking
> + * applications and should be replaced by PKT_RX_VLAN_STRIPPED.
> + */
> +#define PKT_RX_VLAN_PKT (1ULL << 0)
> +
> #define PKT_RX_RSS_HASH (1ULL << 1) /**< RX packet with RSS hash
> result. */
> #define PKT_RX_FDIR (1ULL << 2) /**< RX packet with FDIR match
> indicate. */
> #define PKT_RX_L4_CKSUM_BAD (1ULL << 3) /**< L4 cksum of RX pkt. is not
> OK. */
> @@ -89,11 +98,37 @@ extern "C" {
> #define PKT_RX_HBUF_OVERFLOW (0ULL << 0) /**< Header buffer overflow. */
> #define PKT_RX_RECIP_ERR (0ULL << 0) /**< Hardware processing error. */
> #define PKT_RX_MAC_ERR (0ULL << 0) /**< MAC error. */
> +
> +/**
> + * A vlan has been stripped by the hardware and its tci is saved in
> + * mbuf->vlan_tci. This can only happen if vlan stripping is enabled
> + * in the RX configuration of the PMD.
> + */
> +#define PKT_RX_VLAN_STRIPPED (1ULL << 6)
> +
> +/* hole, some bits can be reused here */
> +
> #define PKT_RX_IEEE1588_PTP (1ULL << 9) /**< RX IEEE1588 L2 Ethernet PT
> Packet. */
> #define PKT_RX_IEEE1588_TMST (1ULL << 10) /**< RX IEEE1588 L2/L4 timestamped
> packet.*/
> #define PKT_RX_FDIR_ID (1ULL << 13) /**< FD id reported if FDIR match.
> */
> #define PKT_RX_FDIR_FLX (1ULL << 14) /**< Flexible bytes reported if
> FDIR match. */
> -#define PKT_RX_QINQ_PKT (1ULL << 15) /**< RX packet with double VLAN
> stripped. */
> +
> +/**
> + * The 2 vlans have been stripped by the hardware and their tci are
> + * saved in mbuf->vlan_tci (inner) and mbuf->vlan_tci_outer (outer).
> + * This can only happen if vlan stripping is enabled in the RX
> + * configuration of the PMD. If this flag is set, PKT_RX_VLAN_STRIPPED
> + * must also be set.
> + */
> +#define PKT_RX_QINQ_STRIPPED (1ULL << 15)
> +
> +/**
> + * Deprecated.
> + * RX packet with double VLAN stripped.
> + * This flag is replaced by PKT_RX_QINQ_STRIPPED.
> + */
> +#define PKT_RX_QINQ_PKT PKT_RX_QINQ_STRIPPED
> +
> /* add new RX flags here */
>
> /* add new TX flags here */
> @@ -761,7 +796,10 @@ struct rte_mbuf {
>
> /*
> * The packet type, which is the combination of outer/inner L2, L3, L4
> - * and tunnel types.
> + * and tunnel types. The packet_type is about data really present in the
> + * mbuf. Example: if vlan stripping is enabled, a received vlan packet
> + * would have RTE_PTYPE_L2_ETHER and not RTE_PTYPE_L2_VLAN because the
> + * vlan is stripped from the data.
> */
> union {
> uint32_t packet_type; /**< L2/L3/L4 and tunnel information. */
> @@ -778,7 +816,8 @@ struct rte_mbuf {
>
> uint32_t pkt_len; /**< Total pkt len: sum of all segments. */
> uint16_t data_len; /**< Amount of data in segment buffer. */
> - uint16_t vlan_tci; /**< VLAN Tag Control Identifier (CPU order)
> */
> + /** VLAN TCI (CPU order), valid if PKT_RX_VLAN_STRIPPED is set. */
> + uint16_t vlan_tci;
>
> union {
> uint32_t rss; /**< RSS hash result if RSS enabled */
> @@ -804,7 +843,8 @@ struct rte_mbuf {
>
> uint32_t seqn; /**< Sequence number. See also rte_reorder_insert() */
>
> - uint16_t vlan_tci_outer; /**< Outer VLAN Tag Control Identifier (CPU
> order) */
> + /** Outer VLAN TCI (CPU order), valid if PKT_RX_QINQ_STRIPPED is set. */
> + uint16_t vlan_tci_outer;
>
> /* second cache line - fields only used in slow path or on TX */
> MARKER cacheline1 __rte_cache_min_aligned;
> --
> 2.8.0.rc3
