[v5,1/3] net/iavf: support Tx LLDP on scalar
Checks
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_ethdev.c | 5 +++++
drivers/net/iavf/iavf_rxtx.c | 16 ++++++++++++++--
drivers/net/iavf/iavf_rxtx.h | 3 +++
3 files changed, 22 insertions(+), 2 deletions(-)
@@ -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;
@@ -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 +2428,12 @@ 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 > 0)
+ if (*RTE_MBUF_DYNFIELD(mb,
+ rte_pmd_iavf_tx_lldp_dynfield_offset, uint8_t *) > 0)
+ return 1;
+
return 0;
}
@@ -2446,6 +2453,11 @@ 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 +2838,7 @@ 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