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From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: Wenzhuo Lu <wenzhuo.lu@intel.com>, Jingjing Wu <jingjing.wu@intel.com>,
Bernard Iremonger <bernard.iremonger@intel.com>,
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Olivier Matz <olivier.matz@6wind.com>
Cc: dev@dpdk.org,
Jerin Jacob <jerin.jacob@caviumnetworks.com>
Date: Mon, 8 Oct 2018 21:39:50 +0530
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Subject: [dpdk-dev] [PATCH v4 1/4] ethdev: add Rx offload outer UDP checksum
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Introduced DEV_RX_OFFLOAD_OUTER_UDP_CKSUM Rx offload flag and
PKT_RX_OUTER_L4_CKSUM_* mbuf ol_flags to detect outer UDP checksum
status.
- To use hardware Rx outer UDP checksum offload, the user needs to
configure DEV_RX_OFFLOAD_OUTER_UDP_CKSUM offload flags in slowpath.
- Driver updates checksum status in mbuf ol_flag as
PKT_RX_OUTER_L4_CKSUM_* flags.
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---
This patch series is depended on http://patches.dpdk.org/patch/45840/
v4:
- Replaced PKT_RX_EL4_CKSUM_BAD with PKT_RX_OUTER_L4_CKSUM_* flags
v3:
- Mention in git commit log that PKT_RX_EL4_CKSUM_BAD based one bit scheme
selected based on exiting outer L3 PKT_RX_EIP_CKSUM_BAD one bit flag scheme.
- Removed extra empty line in features.rst (Andrew Rybchenko)
v2:
- Removed DEV_RX_OFFLOAD_OUTER_TCP_CKSUM and DEV_RX_OFFLOAD_OUTER_SCTP_CKSUM
as there is no realworld use case for it.
See: http://patches.dpdk.org/patch/44692/
---
app/test-pmd/config.c | 9 +++++++++
doc/guides/nics/features.rst | 5 +++++
lib/librte_ethdev/rte_ethdev.c | 1 +
lib/librte_ethdev/rte_ethdev.h | 1 +
lib/librte_mbuf/rte_mbuf.c | 12 ++++++++++++
lib/librte_mbuf/rte_mbuf.h | 19 +++++++++++++++++++
6 files changed, 47 insertions(+)
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 1adc9b94b..d53c527e5 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -594,6 +594,15 @@ port_offload_cap_display(portid_t port_id)
printf("off\n");
}
+ if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_OUTER_UDP_CKSUM) {
+ printf("RX Outer UDP checksum: ");
+ if (ports[port_id].dev_conf.rxmode.offloads &
+ DEV_RX_OFFLOAD_OUTER_UDP_CKSUM)
+ printf("on\n");
+ else
+ printf("off\n");
+ }
+
if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_LRO) {
printf("Large receive offload: ");
if (ports[port_id].dev_conf.rxmode.offloads &
diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
index d42489b6d..998f67c8e 100644
--- a/doc/guides/nics/features.rst
+++ b/doc/guides/nics/features.rst
@@ -639,6 +639,11 @@ Inner L4 checksum
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``.
+* **[provides] rte_eth_dev_info**: ``rx_offload_capa,rx_queue_offload_capa:DEV_RX_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 e9a82fe7f..a630c4fda 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -127,6 +127,7 @@ static const struct {
RTE_RX_OFFLOAD_BIT2STR(SECURITY),
RTE_RX_OFFLOAD_BIT2STR(KEEP_CRC),
RTE_RX_OFFLOAD_BIT2STR(SCTP_CKSUM),
+ RTE_RX_OFFLOAD_BIT2STR(OUTER_UDP_CKSUM),
};
#undef RTE_RX_OFFLOAD_BIT2STR
diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index d02db14ad..821d371c3 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -889,6 +889,7 @@ struct rte_eth_conf {
#define DEV_RX_OFFLOAD_SECURITY 0x00008000
#define DEV_RX_OFFLOAD_KEEP_CRC 0x00010000
#define DEV_RX_OFFLOAD_SCTP_CKSUM 0x00020000
+#define DEV_RX_OFFLOAD_OUTER_UDP_CKSUM 0x00040000
#define DEV_RX_OFFLOAD_CHECKSUM (DEV_RX_OFFLOAD_IPV4_CKSUM | \
DEV_RX_OFFLOAD_UDP_CKSUM | \
diff --git a/lib/librte_mbuf/rte_mbuf.c b/lib/librte_mbuf/rte_mbuf.c
index e714c5a59..c1740ce0c 100644
--- a/lib/librte_mbuf/rte_mbuf.c
+++ b/lib/librte_mbuf/rte_mbuf.c
@@ -301,6 +301,11 @@ const char *rte_get_rx_ol_flag_name(uint64_t mask)
case PKT_RX_TIMESTAMP: return "PKT_RX_TIMESTAMP";
case PKT_RX_SEC_OFFLOAD: return "PKT_RX_SEC_OFFLOAD";
case PKT_RX_SEC_OFFLOAD_FAILED: return "PKT_RX_SEC_OFFLOAD_FAILED";
+ case PKT_RX_OUTER_L4_CKSUM_BAD: return "PKT_RX_OUTER_L4_CKSUM_BAD";
+ case PKT_RX_OUTER_L4_CKSUM_GOOD: return "PKT_RX_OUTER_L4_CKSUM_GOOD";
+ case PKT_RX_OUTER_L4_CKSUM_INVALID:
+ return "PKT_RX_OUTER_L4_CKSUM_INVALID";
+
default: return NULL;
}
}
@@ -339,6 +344,13 @@ rte_get_rx_ol_flag_list(uint64_t mask, char *buf, size_t buflen)
{ PKT_RX_SEC_OFFLOAD, PKT_RX_SEC_OFFLOAD, NULL },
{ PKT_RX_SEC_OFFLOAD_FAILED, PKT_RX_SEC_OFFLOAD_FAILED, NULL },
{ PKT_RX_QINQ, PKT_RX_QINQ, NULL },
+ { PKT_RX_OUTER_L4_CKSUM_BAD, PKT_RX_OUTER_L4_CKSUM_MASK, NULL },
+ { PKT_RX_OUTER_L4_CKSUM_GOOD, PKT_RX_OUTER_L4_CKSUM_MASK,
+ NULL },
+ { PKT_RX_OUTER_L4_CKSUM_INVALID, PKT_RX_OUTER_L4_CKSUM_MASK,
+ NULL },
+ { PKT_RX_OUTER_L4_CKSUM_UNKNOWN, PKT_RX_OUTER_L4_CKSUM_MASK,
+ "PKT_RX_OUTER_L4_CKSUM_UNKNOWN" },
};
const char *name;
unsigned int i;
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index eb11779e7..a453ec008 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -177,6 +177,25 @@ extern "C" {
*/
#define PKT_RX_QINQ (1ULL << 20)
+/**
+ * Mask of bits used to determine the status of outer RX L4 checksum.
+ * - PKT_RX_OUTER_L4_CKSUM_UNKNOWN: no info about the outer RX L4 checksum
+ * - PKT_RX_OUTER_L4_CKSUM_BAD: the outer L4 checksum in the packet is wrong
+ * - PKT_RX_OUTER_L4_CKSUM_GOOD: the outer L4 checksum in the packet is valid
+ * - PKT_RX_OUTER_L4_CKSUM_INVALID: invalid outer L4 checksum state.
+ *
+ * The detection of PKT_RX_OUTER_L4_CKSUM_GOOD shall be based on the given
+ * HW capability, At minimum, the PMD should support
+ * PKT_RX_OUTER_L4_CKSUM_UNKNOWN and PKT_RX_OUTER_L4_CKSUM_BAD states
+ * if the DEV_RX_OFFLOAD_OUTER_UDP_CKSUM offload is available.
+ */
+#define PKT_RX_OUTER_L4_CKSUM_MASK ((1ULL << 21) | (1ULL << 22))
+
+#define PKT_RX_OUTER_L4_CKSUM_UNKNOWN 0
+#define PKT_RX_OUTER_L4_CKSUM_BAD (1ULL << 21)
+#define PKT_RX_OUTER_L4_CKSUM_GOOD (1ULL << 22)
+#define PKT_RX_OUTER_L4_CKSUM_INVALID ((1ULL << 21) | (1ULL << 22))
+
/* add new RX flags here */
/* add new TX flags here */
--
2.19.0