Add support for TX checksumming.
Signed-off-by: Alfredo Cardigliano <cardigli...@ntop.org>
Reviewed-by: Shannon Nelson <snel...@pensando.io>
---
drivers/net/ionic/ionic_ethdev.c | 5 ++
drivers/net/ionic/ionic_lif.c | 1
drivers/net/ionic/ionic_lif.h | 1
drivers/net/ionic/ionic_rxtx.c | 86 ++++++++++++++++++++++++++++++++++++++
4 files changed, 92 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ionic/ionic_ethdev.c b/drivers/net/ionic/ionic_ethdev.c
index 1300774a9..720598dbd 100644
--- a/drivers/net/ionic/ionic_ethdev.c
+++ b/drivers/net/ionic/ionic_ethdev.c
@@ -413,7 +413,12 @@ ionic_dev_info_get(struct rte_eth_dev *eth_dev,
0;
dev_info->tx_queue_offload_capa =
+ DEV_TX_OFFLOAD_IPV4_CKSUM |
+ DEV_TX_OFFLOAD_UDP_CKSUM |
+ DEV_TX_OFFLOAD_TCP_CKSUM |
DEV_TX_OFFLOAD_VLAN_INSERT |
+ DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
+ DEV_TX_OFFLOAD_OUTER_UDP_CKSUM |
0;
/*
diff --git a/drivers/net/ionic/ionic_lif.c b/drivers/net/ionic/ionic_lif.c
index e2cefbaf6..6f1cbf8fb 100644
--- a/drivers/net/ionic/ionic_lif.c
+++ b/drivers/net/ionic/ionic_lif.c
@@ -1506,6 +1506,7 @@ ionic_lif_init(struct ionic_lif *lif)
| IONIC_ETH_HW_RX_HASH
| IONIC_ETH_HW_TX_SG
| IONIC_ETH_HW_RX_SG
+ | IONIC_ETH_HW_TX_CSUM
| IONIC_ETH_HW_RX_CSUM
| IONIC_ETH_HW_TSO
| IONIC_ETH_HW_TSO_IPV6
diff --git a/drivers/net/ionic/ionic_lif.h b/drivers/net/ionic/ionic_lif.h
index aa2f849c0..8feaad7e3 100644
--- a/drivers/net/ionic/ionic_lif.h
+++ b/drivers/net/ionic/ionic_lif.h
@@ -32,6 +32,7 @@ struct ionic_tx_stats {
uint64_t bytes;
uint64_t drop;
uint64_t stop;
+ uint64_t no_csum;
uint64_t tso;
uint64_t frags;
};
diff --git a/drivers/net/ionic/ionic_rxtx.c b/drivers/net/ionic/ionic_rxtx.c
index 1a7313cc3..09600c953 100644
--- a/drivers/net/ionic/ionic_rxtx.c
+++ b/drivers/net/ionic/ionic_rxtx.c
@@ -231,16 +231,59 @@ ionic_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
uint16_t tx_queue_id)
return 0;
}
+static void
+ionic_tx_tcp_pseudo_csum(struct rte_mbuf *txm)
+{
+ struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(txm, struct ether_hdr *);
+ char *l3_hdr = ((char *)eth_hdr) + txm->l2_len;
+ struct rte_tcp_hdr *tcp_hdr = (struct rte_tcp_hdr *)
+ (l3_hdr + txm->l3_len);
+
+ if (txm->ol_flags & PKT_TX_IP_CKSUM) {
+ struct rte_ipv4_hdr *ipv4_hdr = (struct rte_ipv4_hdr *)l3_hdr;
+ ipv4_hdr->hdr_checksum = 0;
+ tcp_hdr->cksum = 0;
+ tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr, tcp_hdr);
+ } else {
+ struct rte_ipv6_hdr *ipv6_hdr = (struct rte_ipv6_hdr *)l3_hdr;
+ tcp_hdr->cksum = 0;
+ tcp_hdr->cksum = rte_ipv6_udptcp_cksum(ipv6_hdr, tcp_hdr);
+ }
+}
+
+static void
+ionic_tx_tcp_inner_pseudo_csum(struct rte_mbuf *txm)
+{
+ struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(txm, struct ether_hdr *);
+ char *l3_hdr = ((char *)eth_hdr) + txm->outer_l2_len +
+ txm->outer_l3_len + txm->l2_len;
+ struct rte_tcp_hdr *tcp_hdr = (struct rte_tcp_hdr *)
+ (l3_hdr + txm->l3_len);
+
+ if (txm->ol_flags & PKT_TX_IPV4) {
+ struct rte_ipv4_hdr *ipv4_hdr = (struct rte_ipv4_hdr *)l3_hdr;
+ ipv4_hdr->hdr_checksum = 0;
+ tcp_hdr->cksum = 0;
+ tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr, tcp_hdr);
+ } else {
+ struct rte_ipv6_hdr *ipv6_hdr = (struct rte_ipv6_hdr *)l3_hdr;
+ tcp_hdr->cksum = 0;
+ tcp_hdr->cksum = rte_ipv6_udptcp_cksum(ipv6_hdr, tcp_hdr);
+ }
+}
+
static void
ionic_tx_tso_post(struct ionic_queue *q, struct ionic_txq_desc *desc,
struct rte_mbuf *txm,
rte_iova_t addr, uint8_t nsge, uint16_t len,
uint32_t hdrlen, uint32_t mss,
+ bool encap,
uint16_t vlan_tci, bool has_vlan,
bool start, bool done)
{
uint8_t flags = 0;
flags |= has_vlan ? IONIC_TXQ_DESC_FLAG_VLAN : 0;
+ flags |= encap ? IONIC_TXQ_DESC_FLAG_ENCAP : 0;
flags |= start ? IONIC_TXQ_DESC_FLAG_TSO_SOT : 0;
flags |= done ? IONIC_TXQ_DESC_FLAG_TSO_EOT : 0;
@@ -285,10 +328,29 @@ ionic_tx_tso(struct ionic_queue *q, struct rte_mbuf *txm,
uint64_t offloads,
uint32_t len;
uint32_t offset = 0;
bool start, done;
+ bool encap;
bool has_vlan = !!(txm->ol_flags & PKT_TX_VLAN_PKT);
uint16_t vlan_tci = txm->vlan_tci;
+ uint64_t ol_flags = txm->ol_flags;
+
+ encap = ((ol_flags & PKT_TX_OUTER_IP_CKSUM) ||
+ (ol_flags & PKT_TX_OUTER_UDP_CKSUM)) &&
+ ((ol_flags & PKT_TX_OUTER_IPV4) ||
+ (ol_flags & PKT_TX_OUTER_IPV6));
+
+ /* Preload inner-most TCP csum field with IP pseudo hdr
+ * calculated with IP length set to zero. HW will later
+ * add in length to each TCP segment resulting from the TSO.
+ */
- hdrlen = txm->l2_len + txm->l3_len;
+ if (encap) {
+ ionic_tx_tcp_inner_pseudo_csum(txm);
+ hdrlen = txm->outer_l2_len + txm->outer_l3_len +
+ txm->l2_len + txm->l3_len + txm->l4_len;
+ } else {
+ ionic_tx_tcp_pseudo_csum(txm);
+ hdrlen = txm->l2_len + txm->l3_len + txm->l4_len;
+ }
seglen = hdrlen + mss;
left = txm->data_len;
@@ -312,6 +374,7 @@ ionic_tx_tso(struct ionic_queue *q, struct rte_mbuf *txm,
uint64_t offloads,
ionic_tx_tso_post(q, desc, txm,
desc_addr, desc_nsge, desc_len,
hdrlen, mss,
+ encap,
vlan_tci, has_vlan,
start, done && not_xmit_more);
desc = ionic_tx_tso_next(q, &elem);
@@ -350,6 +413,7 @@ ionic_tx_tso(struct ionic_queue *q, struct rte_mbuf *txm,
uint64_t offloads,
ionic_tx_tso_post(q, desc, txm_seg,
desc_addr, desc_nsge, desc_len,
hdrlen, mss,
+ encap,
vlan_tci, has_vlan,
start, done && not_xmit_more);
desc = ionic_tx_tso_next(q, &elem);
@@ -375,15 +439,34 @@ ionic_tx(struct ionic_queue *q, struct rte_mbuf *txm,
uint64_t offloads,
struct ionic_txq_sg_elem *elem = sg_desc->elems;
struct ionic_tx_stats *stats = IONIC_Q_TO_TX_STATS(q);
struct rte_mbuf *txm_seg;
+ bool encap;
bool has_vlan;
uint64_t ol_flags = txm->ol_flags;
uint64_t addr = rte_cpu_to_le_64(rte_mbuf_data_iova_default(txm));
uint8_t opcode = IONIC_TXQ_DESC_OPCODE_CSUM_NONE;
uint8_t flags = 0;
+ if ((ol_flags & PKT_TX_IP_CKSUM) &&
+ (offloads & DEV_TX_OFFLOAD_IPV4_CKSUM)) {
+ opcode = IONIC_TXQ_DESC_OPCODE_CSUM_HW;
+ flags |= IONIC_TXQ_DESC_FLAG_CSUM_L3;
+ if (((ol_flags & PKT_TX_TCP_CKSUM) &&
+ (offloads & DEV_TX_OFFLOAD_TCP_CKSUM)) ||
+ ((ol_flags & PKT_TX_UDP_CKSUM) &&
+ (offloads & DEV_TX_OFFLOAD_UDP_CKSUM)))
+ flags |= IONIC_TXQ_DESC_FLAG_CSUM_L4;
+ } else {
+ stats->no_csum++;
+ }
+
has_vlan = (ol_flags & PKT_TX_VLAN_PKT);
+ encap = ((ol_flags & PKT_TX_OUTER_IP_CKSUM) ||
+ (ol_flags & PKT_TX_OUTER_UDP_CKSUM)) &&
+ ((ol_flags & PKT_TX_OUTER_IPV4) ||
+ (ol_flags & PKT_TX_OUTER_IPV6));
flags |= has_vlan ? IONIC_TXQ_DESC_FLAG_VLAN : 0;
+ flags |= encap ? IONIC_TXQ_DESC_FLAG_ENCAP : 0;
desc->cmd = encode_txq_desc_cmd(opcode, flags, txm->nb_segs - 1, addr);
desc->len = txm->data_len;
@@ -468,6 +551,7 @@ ionic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
PKT_TX_IPV4 | \
PKT_TX_IPV6 | \
PKT_TX_VLAN | \
+ PKT_TX_IP_CKSUM | \
PKT_TX_TCP_SEG | \
PKT_TX_L4_MASK)
