To make it possible to the app to determine if the hash was calculated
for the packet or not, the PKT_RX_RSS_HASH should be set in the mbuf's
ol_flags.
As the PMD wasn't setting that, the application couldn't check if there
is a hash in a proper way.
The hash is valid only if it's UDP or TCP and the IP packet wasn't
fragmented.
Fixes: e5df9f33db00 ("net/ena: fix passing RSS hash to mbuf")
Cc: sta...@dpdk.org
Signed-off-by: Michal Krawczyk <m...@semihalf.com>
Reviewed-by: Igor Chauskin <igo...@amazon.com>
Reviewed-by: Amit Bernstein <amitb...@amazon.com>
---
v4:
* Add release notes.
* Always announce DEV_RX_OFFLOAD_RSS_HASH if RSS is enabled.
doc/guides/rel_notes/release_21_05.rst | 1 +
drivers/net/ena/ena_ethdev.c | 12 ++++++++++--
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/doc/guides/rel_notes/release_21_05.rst
b/doc/guides/rel_notes/release_21_05.rst
index 755d5fcd32..389a7a05ac 100644
--- a/doc/guides/rel_notes/release_21_05.rst
+++ b/doc/guides/rel_notes/release_21_05.rst
@@ -210,6 +210,7 @@ New Features
* Changed memcpy mapping to the dpdk-optimized version.
* Updated ena_com (HAL) to the latest version.
* Fixed bugs when requesting large LLQ headers using the devargs.
+ * Added indication of the RSS hash presence in the mbuf.
* **Added support of multiple data-units in cryptodev API.**
diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index 6092288239..9a43ab50fe 100644
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -51,6 +51,8 @@
#define ENA_MIN_RING_DESC 128
+#define ENA_PTYPE_HAS_HASH (RTE_PTYPE_L4_TCP | RTE_PTYPE_L4_UDP)
+
enum ethtool_stringset {
ETH_SS_TEST = 0,
ETH_SS_STATS,
@@ -314,6 +316,11 @@ static inline void ena_rx_mbuf_prepare(struct rte_mbuf
*mbuf,
else
ol_flags |= PKT_RX_L4_CKSUM_GOOD;
+ if (likely((packet_type & ENA_PTYPE_HAS_HASH) && !ena_rx_ctx->frag)) {
+ ol_flags |= PKT_RX_RSS_HASH;
+ mbuf->hash.rss = ena_rx_ctx->hash;
+ }
+
mbuf->ol_flags = ol_flags;
mbuf->packet_type = packet_type;
}
@@ -1960,6 +1967,9 @@ static int ena_dev_configure(struct rte_eth_dev *dev)
adapter->state = ENA_ADAPTER_STATE_CONFIG;
+ if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
+ dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
+
adapter->tx_selected_offloads = dev->data->dev_conf.txmode.offloads;
adapter->rx_selected_offloads = dev->data->dev_conf.rxmode.offloads;
return 0;
@@ -2245,8 +2255,6 @@ static uint16_t eth_ena_recv_pkts(void *rx_queue, struct
rte_mbuf **rx_pkts,
++rx_ring->rx_stats.bad_csum;
}
- mbuf->hash.rss = ena_rx_ctx.hash;
-
rx_pkts[completed] = mbuf;
rx_ring->rx_stats.bytes += mbuf->pkt_len;
}
--
2.25.1
