[v10,2/7] ethdev: add mbuf RSS update as an offload

Message ID 20191009153357.926-3-pbhagavatula@marvell.com
State Superseded
Headers show
Series
  • ethdev: add new Rx offload flags
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Checks

Context Check Description
ci/Intel-compilation success Compilation OK
ci/checkpatch success coding style OK

Commit Message

Pavan Nikhilesh Bhagavatula Oct. 9, 2019, 3:33 p.m.
From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Add new Rx offload flag `DEV_RX_OFFLOAD_RSS_HASH` which can be used to
enable/disable PMDs write to `rte_mbuf::hash::rss`.
PMDs notify the validity of `rte_mbuf::hash:rss` to the applcation
by enabling `PKT_RX_RSS_HASH ` flag in `rte_mbuf::ol_flags`.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Reviewed-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 doc/guides/nics/features.rst           | 2 ++
 doc/guides/rel_notes/release_19_11.rst | 7 +++++++
 lib/librte_ethdev/rte_ethdev.c         | 1 +
 lib/librte_ethdev/rte_ethdev.h         | 1 +
 4 files changed, 11 insertions(+)

Patch

diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
index 1756fa73a..f7c6d918f 100644
--- a/doc/guides/nics/features.rst
+++ b/doc/guides/nics/features.rst
@@ -274,6 +274,7 @@  Supports RSS hashing on RX.
 
 * **[uses]     user config**: ``dev_conf.rxmode.mq_mode`` = ``ETH_MQ_RX_RSS_FLAG``.
 * **[uses]     user config**: ``dev_conf.rx_adv_conf.rss_conf``.
+* **[uses]     rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_RSS_HASH``.
 * **[provides] rte_eth_dev_info**: ``flow_type_rss_offloads``.
 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_RSS_HASH``, ``mbuf.rss``.
 
@@ -286,6 +287,7 @@  Inner RSS
 Supports RX RSS hashing on Inner headers.
 
 * **[uses]    rte_flow_action_rss**: ``level``.
+* **[uses]    rte_eth_rxconf,rte_eth_rxmode**: ``offloads:DEV_RX_OFFLOAD_RSS_HASH``.
 * **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_RSS_HASH``, ``mbuf.rss``.
 
 
diff --git a/doc/guides/rel_notes/release_19_11.rst b/doc/guides/rel_notes/release_19_11.rst
index 18a67c96d..55b334a6d 100644
--- a/doc/guides/rel_notes/release_19_11.rst
+++ b/doc/guides/rel_notes/release_19_11.rst
@@ -87,6 +87,13 @@  New Features
   *  This scheme will allow PMDs to avoid lookup to internal ptype table on Rx
      and thereby improve Rx performance if application wishes do so.
 
+* **Added Rx offload flag to enable or disable RSS update**
+
+  *  Added new Rx offload flag `DEV_RX_OFFLOAD_RSS_HASH` which can be used to
+     enable/disable PMDs write to `rte_mbuf::hash::rss`.
+  *  PMDs notify the validity of `rte_mbuf::hash:rss` to the application
+     by enabling `PKT_RX_RSS_HASH ` flag in `rte_mbuf::ol_flags`.
+
 
 Removed Items
 -------------
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 349483707..096e6a13c 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -129,6 +129,7 @@  static const struct {
 	RTE_RX_OFFLOAD_BIT2STR(KEEP_CRC),
 	RTE_RX_OFFLOAD_BIT2STR(SCTP_CKSUM),
 	RTE_RX_OFFLOAD_BIT2STR(OUTER_UDP_CKSUM),
+	RTE_RX_OFFLOAD_BIT2STR(RSS_HASH),
 };
 
 #undef RTE_RX_OFFLOAD_BIT2STR
diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index 35e171e3c..6110c1772 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -1013,6 +1013,7 @@  struct rte_eth_conf {
 #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_RSS_HASH		0x00080000
 
 #define DEV_RX_OFFLOAD_CHECKSUM (DEV_RX_OFFLOAD_IPV4_CKSUM | \
 				 DEV_RX_OFFLOAD_UDP_CKSUM | \