[v4,1/3] net/iavf: support Tx LLDP on scalar
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Commit Message
This patch adds an mbuf dynfield IAVF_TX_LLDP_DYNFIELD to determine
whether or not to fill the SWTCH_UPLINK bit in the Tx context descriptor
to send LLDP packet.
Signed-off-by: Zhichao Zeng <zhichaox.zeng@intel.com>
---
drivers/net/iavf/iavf_rxtx.c | 19 +++++++++++++++++--
drivers/net/iavf/iavf_rxtx.h | 3 +++
drivers/net/iavf/rte_pmd_iavf.h | 3 +++
3 files changed, 23 insertions(+), 2 deletions(-)
@@ -85,6 +85,9 @@ uint64_t rte_pmd_ifd_dynflag_proto_xtr_tcp_mask;
uint64_t rte_pmd_ifd_dynflag_proto_xtr_ip_offset_mask;
uint64_t rte_pmd_ifd_dynflag_proto_xtr_ipsec_crypto_said_mask;
+/* Offset of mbuf dynamic field for transmitting LLDP packet */
+int rte_pmd_iavf_tx_lldp_dynfield_offset = -1;
+
uint8_t
iavf_proto_xtr_type_to_rxdid(uint8_t flex_type)
{
@@ -2418,8 +2421,9 @@ iavf_xmit_cleanup(struct iavf_tx_queue *txq)
/* Check if the context descriptor is needed for TX offloading */
static inline uint16_t
-iavf_calc_context_desc(uint64_t flags, uint8_t vlan_flag)
+iavf_calc_context_desc(struct rte_mbuf *mb, uint8_t vlan_flag)
{
+ uint64_t flags = mb->ol_flags;
if (flags & (RTE_MBUF_F_TX_TCP_SEG | RTE_MBUF_F_TX_UDP_SEG |
RTE_MBUF_F_TX_TUNNEL_MASK | RTE_MBUF_F_TX_OUTER_IP_CKSUM |
RTE_MBUF_F_TX_OUTER_UDP_CKSUM))
@@ -2427,6 +2431,12 @@ iavf_calc_context_desc(uint64_t flags, uint8_t vlan_flag)
if (flags & RTE_MBUF_F_TX_VLAN &&
vlan_flag & IAVF_TX_FLAGS_VLAN_TAG_LOC_L2TAG2)
return 1;
+
+ if (rte_pmd_iavf_tx_lldp_dynfield_offset ==
+ rte_mbuf_dynfield_lookup(IAVF_TX_LLDP_DYNFIELD, NULL))
+ if (*RTE_MBUF_DYNFIELD(mb,
+ rte_pmd_iavf_tx_lldp_dynfield_offset, uint8_t *) > 0)
+ return 1;
return 0;
}
@@ -2446,6 +2456,11 @@ iavf_fill_ctx_desc_cmd_field(volatile uint64_t *field, struct rte_mbuf *m,
<< IAVF_TXD_CTX_QW1_CMD_SHIFT;
}
+ if (*RTE_MBUF_DYNFIELD(m,
+ rte_pmd_iavf_tx_lldp_dynfield_offset, uint8_t *) > 0)
+ cmd |= IAVF_TX_CTX_DESC_SWTCH_UPLINK
+ << IAVF_TXD_CTX_QW1_CMD_SHIFT;
+
*field |= cmd;
}
@@ -2826,7 +2841,7 @@ iavf_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
nb_desc_data = mb->nb_segs;
nb_desc_ctx =
- iavf_calc_context_desc(mb->ol_flags, txq->vlan_flag);
+ iavf_calc_context_desc(mb, txq->vlan_flag);
nb_desc_ipsec = !!(mb->ol_flags & RTE_MBUF_F_TX_SEC_OFFLOAD);
/**
@@ -107,8 +107,11 @@
#define IAVF_MAX_DATA_PER_TXD \
(IAVF_TXD_QW1_TX_BUF_SZ_MASK >> IAVF_TXD_QW1_TX_BUF_SZ_SHIFT)
+#define IAVF_TX_LLDP_DYNFIELD "intel_pmd_dynfield_tx_lldp"
+
extern uint64_t iavf_timestamp_dynflag;
extern int iavf_timestamp_dynfield_offset;
+extern int rte_pmd_iavf_tx_lldp_dynfield_offset;
/**
* Rx Flex Descriptors
@@ -95,6 +95,9 @@ extern uint64_t rte_pmd_ifd_dynflag_proto_xtr_tcp_mask;
extern uint64_t rte_pmd_ifd_dynflag_proto_xtr_ip_offset_mask;
extern uint64_t rte_pmd_ifd_dynflag_proto_xtr_ipsec_crypto_said_mask;
+/* Offset of mbuf dynamic field for transmitting LLDP packet */
+extern int rte_pmd_iavf_tx_lldp_dynfield_offset;
+
/**
* The mbuf dynamic field pointer for flexible descriptor's extraction metadata.
*/