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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 --- 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.