Introduced DEV_TX_OFFLOAD_OUTER_UDP_CKSUM offload flags and PKT_TX_OUTER_UDP_CKSUM mbuf ol_flags to enable Tx outer UDP checksum offload.
To use hardware Tx outer UDP checksum offload, the user needs to, - enable following in mbuf: a) fill outer_l2_len and outer_l3_len in mbuf b) set the PKT_TX_OUTER_UDP_CKSUM flag c) set the flag PKT_TX_OUTER_IPV4 or PKT_TX_OUTER_IPV6 - configure DEV_TX_OFFLOAD_OUTER_UDP_CKSUM offload flags in slow path Signed-off-by: Jerin Jacob <jerin.ja...@caviumnetworks.com> --- v3: - Git comment corrections (Andrew Rybchenko) s/PKT_TX_OUTER_TCP_CKSUM/PKT_TX_OUTER_UDP_CKSUM/g s/mbuff/mbuf/g v2: - Removed DEV_TX_OFFLOAD_OUTER_TCP_CKSUM and DEV_TX_OFFLOAD_OUTER_SCTP_CKSUM as there is no realworld use case for it. See: http://patches.dpdk.org/patch/44692/ This patch series is depended on http://patches.dpdk.org/patch/45840/ --- app/test-pmd/config.c | 10 ++++++++++ doc/guides/nics/features.rst | 5 +++++ lib/librte_ethdev/rte_ethdev.c | 1 + lib/librte_ethdev/rte_ethdev.h | 2 ++ lib/librte_mbuf/rte_mbuf.c | 1 + lib/librte_mbuf/rte_mbuf.h | 6 +++++- 6 files changed, 24 insertions(+), 1 deletion(-) diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c index d53c527e5..5d9745ae5 100644 --- a/app/test-pmd/config.c +++ b/app/test-pmd/config.c @@ -773,6 +773,16 @@ 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"); + } + } int diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst index 998f67c8e..bc5fff2c1 100644 --- a/doc/guides/nics/features.rst +++ b/doc/guides/nics/features.rst @@ -642,7 +642,12 @@ Supports inner packet L4 checksum. * **[uses] rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_OUTER_UDP_CKSUM``. * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_OUTER_L4_CKSUM_UNKNOWN`` | ``PKT_RX_OUTER_L4_CKSUM_BAD`` | ``PKT_RX_OUTER_L4_CKSUM_GOOD`` | ``PKT_RX_OUTER_L4_CKSUM_INVALID``. +* **[uses] rte_eth_txconf,rte_eth_txmode**: ``offloads:DEV_TX_OFFLOAD_OUTER_UDP_CKSUM``. +* **[uses] mbuf**: ``mbuf.ol_flags:PKT_TX_OUTER_IPV4`` | ``PKT_TX_OUTER_IPV6``. + ``mbuf.ol_flags:PKT_TX_OUTER_UDP_CKSUM``. +* **[uses] mbuf**: ``mbuf.outer_l2_len``, ``mbuf.outer_l3_len``. * **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_OFFLOAD_OUTER_UDP_CKSUM``, + ``tx_offload_capa,tx_queue_offload_capa:DEV_TX_OFFLOAD_OUTER_UDP_CKSUM``. .. _nic_features_packet_type_parsing: diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c index a630c4fda..bb48b5a0f 100644 --- a/lib/librte_ethdev/rte_ethdev.c +++ b/lib/librte_ethdev/rte_ethdev.c @@ -159,6 +159,7 @@ static const struct { RTE_TX_OFFLOAD_BIT2STR(SECURITY), RTE_TX_OFFLOAD_BIT2STR(UDP_TNL_TSO), RTE_TX_OFFLOAD_BIT2STR(IP_TNL_TSO), + RTE_TX_OFFLOAD_BIT2STR(OUTER_UDP_CKSUM), }; #undef RTE_TX_OFFLOAD_BIT2STR diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h index 821d371c3..79d0bb1ed 100644 --- a/lib/librte_ethdev/rte_ethdev.h +++ b/lib/librte_ethdev/rte_ethdev.h @@ -944,6 +944,8 @@ 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 #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 c1740ce0c..c59c5bb0d 100644 --- a/lib/librte_mbuf/rte_mbuf.c +++ b/lib/librte_mbuf/rte_mbuf.c @@ -447,6 +447,7 @@ 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_UDP_CKSUM, PKT_TX_OUTER_UDP_CKSUM, NULL }, }; const char *name; unsigned int i; diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h index a453ec008..61e6fca4d 100644 --- a/lib/librte_mbuf/rte_mbuf.h +++ b/lib/librte_mbuf/rte_mbuf.h @@ -200,6 +200,9 @@ extern "C" { /* add new TX flags here */ +/**< Outer UDP cksum of TX pkt. computed by NIC. */ +#define PKT_TX_OUTER_UDP_CKSUM (1ULL << 41) + /** * 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 @@ -367,7 +370,8 @@ extern "C" { PKT_TX_TUNNEL_MASK | \ PKT_TX_MACSEC | \ PKT_TX_SEC_OFFLOAD | \ - PKT_TX_UDP_SEG) + PKT_TX_UDP_SEG | \ + PKT_TX_OUTER_UDP_CKSUM) /** * Mbuf having an external buffer attached. shinfo in mbuf must be filled. -- 2.19.0
