Introduced DEV_TX_OFFLOAD_OUTER_UDP_CKSUM, DEV_TX_OFFLOAD_OUTER_TCP_CKSUM
and DEV_TX_OFFLOAD_OUTER_SCTP_CKSUM offload flags and
PKT_TX_OUTER_L4_NO_CKSUM, PKT_TX_OUTER_TCP_CKSUM, PKT_TX_OUTER_SCTP_CKSUM
and PKT_TX_OUTER_UDP_CKSUM mbuf ol_flags to enable Tx outer L4 checksum
offload.
To use hardware Tx outer L4 checksum offload, the user needs to.
# enable following in mbuff:
- fill outer_l2_len and outer_l3_len in mbuf
- set the flags PKT_TX_OUTER_TCP_CKSUM, PKT_TX_OUTER_SCTP_CKSUM or
PKT_TX_OUTER_UDP_CKSUM
- set the flag PKT_TX_OUTER_IPV4 or PKT_TX_OUTER_IPV6
# configure DEV_TX_OFFLOAD_OUTER_* offload flags in slow path.
Signed-off-by: Jerin Jacob <jerin.ja...@caviumnetworks.com>
---
app/test-pmd/config.c | 27 +++++++++++++++++++++++++++
doc/guides/nics/features.rst | 6 ++++++
lib/librte_ethdev/rte_ethdev.c | 3 +++
lib/librte_ethdev/rte_ethdev.h | 6 ++++++
lib/librte_mbuf/rte_mbuf.c | 5 +++++
lib/librte_mbuf/rte_mbuf.h | 23 ++++++++++++++++++++++-
6 files changed, 69 insertions(+), 1 deletion(-)
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 92a177e29..85f832bf0 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -773,6 +773,33 @@ port_offload_cap_display(portid_t port_id)
else
printf("off\n");
}
+
+ if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_OUTER_UDP_CKSUM) {
+ printf("TX Outer UDP checksum: ");
+ if (ports[port_id].dev_conf.txmode.offloads &
+ DEV_TX_OFFLOAD_OUTER_UDP_CKSUM)
+ printf("on\n");
+ else
+ printf("off\n");
+ }
+
+ if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_OUTER_TCP_CKSUM) {
+ printf("TX Outer TCP checksum: ");
+ if (ports[port_id].dev_conf.txmode.offloads &
+ DEV_TX_OFFLOAD_OUTER_TCP_CKSUM)
+ printf("on\n");
+ else
+ printf("off\n");
+ }
+
+ if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_OUTER_SCTP_CKSUM) {
+ printf("TX Outer SCTP checksum: ");
+ if (ports[port_id].dev_conf.txmode.offloads &
+ DEV_TX_OFFLOAD_OUTER_SCTP_CKSUM)
+ printf("on\n");
+ else
+ printf("off\n");
+ }
}
int
diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
index 68420d196..884dbd7a5 100644
--- a/doc/guides/nics/features.rst
+++ b/doc/guides/nics/features.rst
@@ -639,8 +639,14 @@ Inner L4 checksum
Supports inner packet L4 checksum.
* **[uses] rte_eth_rxconf,rte_eth_rxmode**:
``offloads:DEV_RX_OFFLOAD_OUTER_UDP_CKSUM,DEV_RX_OFFLOAD_OUTER_TCP_CKSUM,DEV_RX_OFFLOAD_OUTER_SCTP_CKSUM``.
+* **[uses] rte_eth_txconf,rte_eth_txmode**:
``offloads:DEV_TX_OFFLOAD_OUTER_UDP_CKSUM,DEV_TX_OFFLOAD_OUTER_TCP_CKSUM,DEV_TX_OFFLOAD_OUTER_SCTP_CKSUM``.
+* **[uses] mbuf**: ``mbuf.ol_flags:PKT_TX_OUTER_IPV4`` |
``PKT_TX_OUTER_IPV6``.
+ ``mbuf.ol_flags:PKT_TX_OUTER_L4_NO_CKSUM`` | ``PKT_TX_OUTER_TCP_CKSUM`` |
+ ``PKT_TX_OUTER_SCTP_CKSUM`` | ``PKT_TX_OUTER_UDP_CKSUM``.
+* **[uses] mbuf**: ``mbuf.outer_l2_len``, ``mbuf.outer_l3_len``.
* **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_EL4_CKSUM_BAD``.
* **[provides] rte_eth_dev_info**:
``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_OUTER_UDP_CKSUM,DEV_RX_OFFLOAD_OUTER_TCP_CKSUM,DEV_RX_OFFLOAD_OUTER_SCTP_CKSUM``,
+
``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_OUTER_UDP_CKSUM,DEV_TX_OFFLOAD_OUTER_TCP_CKSUM,DEV_TX_OFFLOAD_OUTER_SCTP_CKSUM``.
.. _nic_features_packet_type_parsing:
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 547132a8c..6cc5ad055 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -160,6 +160,9 @@ static const struct {
RTE_TX_OFFLOAD_BIT2STR(MULTI_SEGS),
RTE_TX_OFFLOAD_BIT2STR(MBUF_FAST_FREE),
RTE_TX_OFFLOAD_BIT2STR(SECURITY),
+ RTE_TX_OFFLOAD_BIT2STR(OUTER_UDP_CKSUM),
+ RTE_TX_OFFLOAD_BIT2STR(OUTER_TCP_CKSUM),
+ RTE_TX_OFFLOAD_BIT2STR(OUTER_SCTP_CKSUM),
};
#undef RTE_TX_OFFLOAD_BIT2STR
diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index 4665bd6f7..a5b33a27f 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -963,6 +963,12 @@ struct rte_eth_conf {
* for tunnel TSO.
*/
#define DEV_TX_OFFLOAD_IP_TNL_TSO 0x00080000
+/** Device supports outer UDP checksum */
+#define DEV_TX_OFFLOAD_OUTER_UDP_CKSUM 0x00100000
+/** Device supports outer TCP checksum */
+#define DEV_TX_OFFLOAD_OUTER_TCP_CKSUM 0x00200000
+/** Device supports outer SCTP checksum */
+#define DEV_TX_OFFLOAD_OUTER_SCTP_CKSUM 0x00400000
#define RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP 0x00000001
/**< Device supports Rx queue setup after device started*/
diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index 022e92b3c..af14d9273 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -437,6 +437,11 @@ rte_get_tx_ol_flag_list(uint64_t mask, char *buf, size_t
buflen)
"PKT_TX_TUNNEL_NONE" },
{ PKT_TX_MACSEC, PKT_TX_MACSEC, NULL },
{ PKT_TX_SEC_OFFLOAD, PKT_TX_SEC_OFFLOAD, NULL },
+ { PKT_TX_OUTER_TCP_CKSUM, PKT_TX_OUTER_L4_MASK, NULL },
+ { PKT_TX_OUTER_SCTP_CKSUM, PKT_TX_OUTER_L4_MASK, NULL },
+ { PKT_TX_OUTER_UDP_CKSUM, PKT_TX_OUTER_L4_MASK, NULL },
+ { PKT_TX_OUTER_L4_NO_CKSUM, PKT_TX_OUTER_L4_MASK,
+ "PKT_TX_OUTER_L4_NO_CKSUM" },
};
const char *name;
unsigned int i;
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index 80989483b..541521d7d 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -184,6 +184,26 @@ extern "C" {
/* add new TX flags here */
+/**
+ * Bits 40+41 used for outer L4 packet type with checksum enabled: 00:
Reserved,
+ * 01: Outer TCP checksum, 10: Outer SCTP checksum, 11: Outer UDP checksum.
+ * To use hardware outer L4 checksum offload, the user needs to:
+ * - fill outer_l2_len and outer_l3_len in mbuf
+ * - set the flags PKT_TX_OUTER_TCP_CKSUM, PKT_TX_OUTER_SCTP_CKSUM or
+ * PKT_TX_OUTER_UDP_CKSUM
+ * - set the flag PKT_TX_OUTER_IPV4 or PKT_TX_OUTER_IPV6
+ */
+#define PKT_TX_OUTER_L4_NO_CKSUM (0ULL << 40)
+/**< Disable Outer L4 cksum of TX pkt. */
+#define PKT_TX_OUTER_TCP_CKSUM (1ULL << 40)
+/**< Outer TCP cksum of TX pkt. computed by NIC. */
+#define PKT_TX_OUTER_SCTP_CKSUM (2ULL << 40)
+/**< Outer SCTP cksum of TX pkt. computed by NIC. */
+#define PKT_TX_OUTER_UDP_CKSUM (3ULL << 40)
+/**< Outer UDP cksum of TX pkt. computed by NIC. */
+#define PKT_TX_OUTER_L4_MASK (3ULL << 40)
+/**< Mask for Outer L4 cksum offload request. */
+
/**
* UDP Fragmentation Offload flag. This flag is used for enabling UDP
* fragmentation in SW or in HW. When use UFO, mbuf->tso_segsz is used
@@ -347,7 +367,8 @@ extern "C" {
PKT_TX_TUNNEL_MASK | \
PKT_TX_MACSEC | \
PKT_TX_SEC_OFFLOAD | \
- PKT_TX_UDP_SEG)
+ PKT_TX_UDP_SEG | \
+ PKT_TX_OUTER_L4_MASK)
/**
* Mbuf having an external buffer attached. shinfo in mbuf must be filled.
--
2.19.0
