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ethdev: add Tx offload outer UDP checksum definition

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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.jacob@caviumnetworks.com>
Reviewed-by: Andrew Rybchenko <arybchenko@solarflare.com>
This commit is contained in:
Jerin Jacob 2018-10-09 14:18:09 +00:00 committed by Ferruh Yigit
parent ec7f71577f
commit df694a05bf
6 changed files with 32 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
app/test-pmd/config.c
View File

@ -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

5
doc/guides/nics/features.rst
View File

@ -645,7 +645,12 @@ 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:

1
lib/librte_ethdev/rte_ethdev.c
View File

@ -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

2
lib/librte_ethdev/rte_ethdev.h
View File

@ -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*/

1
lib/librte_mbuf/rte_mbuf.c
View File

@ -448,6 +448,7 @@ 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;

14
lib/librte_mbuf/rte_mbuf.h
View File

@ -201,6 +201,17 @@ extern "C" {
/* add new TX flags here */
/**
* Outer UDP checksum offload flag. This flag is used for enabling
* outer UDP checksum in PMD. To use outer UDP checksum, the user needs to
* 1) Enable the following in mbuff,
* a) Fill outer_l2_len and outer_l3_len in mbuf.
* b) Set the PKT_TX_OUTER_UDP_CKSUM flag.
* c) Set the PKT_TX_OUTER_IPV4 or PKT_TX_OUTER_IPV6 flag.
* 2) Configure DEV_TX_OFFLOAD_OUTER_UDP_CKSUM offload flag.
*/
#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
@ -368,7 +379,8 @@ 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.