diff mbox series

[v6,1/3] net/iavf: support Tx LLDP on scalar

Message ID 20240103074721.832061-2-zhichaox.zeng@intel.com (mailing list archive)
State Accepted, archived
Delegated to: Qi Zhang
Headers
Series net/iavf: support Tx LLDP on scalar and AVX512 |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Zhichao Zeng Jan. 3, 2024, 7:47 a.m. UTC 
  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 transmit LLDP packet.

Signed-off-by: Zhichao Zeng <zhichaox.zeng@intel.com>
---
 drivers/net/iavf/iavf_ethdev.c |  5 +++++
 drivers/net/iavf/iavf_rxtx.c   | 13 +++++++++++--
 drivers/net/iavf/iavf_rxtx.h   |  8 ++++++++
 3 files changed, 24 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index d1edb0dd5c..ef34246d36 100644
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -41,6 +41,7 @@ 
 #define IAVF_NO_POLL_ON_LINK_DOWN_ARG "no-poll-on-link-down"
 uint64_t iavf_timestamp_dynflag;
 int iavf_timestamp_dynfield_offset = -1;
+int rte_pmd_iavf_tx_lldp_dynfield_offset = -1;
 
 static const char * const iavf_valid_args[] = {
 	IAVF_PROTO_XTR_ARG,
@@ -1017,6 +1018,10 @@  iavf_dev_start(struct rte_eth_dev *dev)
 		}
 	}
 
+	/* Check Tx LLDP dynfield */
+	rte_pmd_iavf_tx_lldp_dynfield_offset =
+		rte_mbuf_dynfield_lookup(IAVF_TX_LLDP_DYNFIELD, NULL);
+
 	if (iavf_init_queues(dev) != 0) {
 		PMD_DRV_LOG(ERR, "failed to do Queue init");
 		return -1;
diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
index f19aa14646..4329809d1d 100644
--- a/drivers/net/iavf/iavf_rxtx.c
+++ b/drivers/net/iavf/iavf_rxtx.c
@@ -2418,8 +2418,9 @@  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 +2428,10 @@  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 (IAVF_CHECK_TX_LLDP(mb))
+		return 1;
+
 	return 0;
 }
 
@@ -2446,6 +2451,10 @@  iavf_fill_ctx_desc_cmd_field(volatile uint64_t *field, struct rte_mbuf *m,
 			<< IAVF_TXD_CTX_QW1_CMD_SHIFT;
 	}
 
+	if (IAVF_CHECK_TX_LLDP(m))
+		cmd |= IAVF_TX_CTX_DESC_SWTCH_UPLINK
+			<< IAVF_TXD_CTX_QW1_CMD_SHIFT;
+
 	*field |= cmd;
 }
 
@@ -2826,7 +2835,7 @@  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);
 
 		/**
diff --git a/drivers/net/iavf/iavf_rxtx.h b/drivers/net/iavf/iavf_rxtx.h
index f432f9d956..25df517bc6 100644
--- a/drivers/net/iavf/iavf_rxtx.h
+++ b/drivers/net/iavf/iavf_rxtx.h
@@ -107,8 +107,16 @@ 
 #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"
+#define IAVF_CHECK_TX_LLDP(m) \
+	((rte_pmd_iavf_tx_lldp_dynfield_offset > 0) && \
+	(*RTE_MBUF_DYNFIELD((m), \
+			rte_pmd_iavf_tx_lldp_dynfield_offset, \
+			uint8_t *)))
+
 extern uint64_t iavf_timestamp_dynflag;
 extern int iavf_timestamp_dynfield_offset;
+extern int rte_pmd_iavf_tx_lldp_dynfield_offset;
 
 /**
  * Rx Flex Descriptors