This patch defines new RSS offload types for IPv4 and
L4(TCP/UDP/SCTP) checksum, which are required when users want
to distribute packets based on the IPv4 or L4 checksum field.
For example "flow create 0 ingress pattern eth / ipv4 / end
actions rss types ipv4-chksum end queues end / end", this flow
causes all matching packets to be distributed to queues on
basis of IPv4 checksum.
Signed-off-by: Alvin Zhang <alvinx.zh...@intel.com>
Acked-by: Ajit Khaparde <ajit.khapa...@broadcom.com>
Acked-by: Aman Deep Singh <aman.deep.si...@intel.com>
---
v5: Add release note and code commands.
---
app/test-pmd/cmdline.c | 4 ++-
app/test-pmd/config.c | 2 ++
doc/guides/rel_notes/release_21_11.rst | 61 ++++++++++++++++++++++++++++++++++
lib/ethdev/rte_ethdev.h | 23 +++++++++++++
4 files changed, 89 insertions(+), 1 deletion(-)
create mode 100644 doc/guides/rel_notes/release_21_11.rst
diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 82253bc..656a311 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -2252,6 +2252,8 @@ struct cmd_config_rss {
rss_conf.rss_hf = ETH_RSS_ECPRI;
else if (!strcmp(res->value, "mpls"))
rss_conf.rss_hf = ETH_RSS_MPLS;
+ else if (!strcmp(res->value, "ipv4-chksum"))
+ rss_conf.rss_hf = ETH_RSS_IPV4_CHKSUM;
else if (!strcmp(res->value, "none"))
rss_conf.rss_hf = 0;
else if (!strcmp(res->value, "level-default")) {
@@ -2323,7 +2325,7 @@ struct cmd_config_rss {
.help_str = "port config all rss "
"all|default|eth|vlan|ip|tcp|udp|sctp|ether|port|vxlan|geneve|"
"nvgre|vxlan-gpe|l2tpv3|esp|ah|pfcp|ecpri|mpls|none|level-default|"
- "level-outer|level-inner|<flowtype_id>",
+ "level-outer|level-inner|ipv4-chksum|<flowtype_id>",
.tokens = {
(void *)&cmd_config_rss_port,
(void *)&cmd_config_rss_keyword,
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 31d8ba1..ece78f2 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -140,6 +140,8 @@
{ "gtpu", ETH_RSS_GTPU },
{ "ecpri", ETH_RSS_ECPRI },
{ "mpls", ETH_RSS_MPLS },
+ { "ipv4-chksum", ETH_RSS_IPV4_CHKSUM },
+ { "l4-chksum", ETH_RSS_L4_CHKSUM },
{ NULL, 0 },
};
diff --git a/doc/guides/rel_notes/release_21_11.rst
b/doc/guides/rel_notes/release_21_11.rst
new file mode 100644
index 0000000..1017550
--- /dev/null
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -0,0 +1,61 @@
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright 2021 The DPDK contributors
+
+.. include:: <isonum.txt>
+
+DPDK Release 21.11
+==================
+
+.. **Read this first.**
+
+ The text in the sections below explains how to update the release notes.
+
+ Use proper spelling, capitalization and punctuation in all sections.
+
+ Variable and config names should be quoted as fixed width text:
+ ``LIKE_THIS``.
+
+ Build the docs and view the output file to ensure the changes are correct::
+
+ make doc-guides-html
+ xdg-open build/doc/html/guides/rel_notes/release_21_11.html
+
+
+New Features
+------------
+
+.. This section should contain new features added in this release.
+ Sample format:
+
+ * **Add a title in the past tense with a full stop.**
+
+ Add a short 1-2 sentence description in the past tense.
+ The description should be enough to allow someone scanning
+ the release notes to understand the new feature.
+
+ If the feature adds a lot of sub-features you can use a bullet list
+ like this:
+
+ * Added feature foo to do something.
+ * Enhanced feature bar to do something else.
+
+ Refer to the previous release notes for examples.
+
+ Suggested order in release notes items:
+ * Core libs (EAL, mempool, ring, mbuf, buses)
+ * Device abstraction libs and PMDs (ordered alphabetically by vendor name)
+ - ethdev (lib, PMDs)
+ - cryptodev (lib, PMDs)
+ - eventdev (lib, PMDs)
+ - etc
+ * Other libs
+ * Apps, Examples, Tools (if significant)
+
+ This section is a comment. Do not overwrite or remove it.
+ Also, make sure to start the actual text at the margin.
+ =======================================================
+
+* **Add new RSS offload types for IPv4/L4 checksum in RSS flow.**
+
+ Add macros ETH_RSS_IPV4_CHKSUM and ETH_RSS_L4_CHKSUM, now IPv4 and
+ TCP/UDP/SCTP header checksum field can be used as input set for RSS.
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index d2b27c3..9a59e7b 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -537,6 +537,29 @@ struct rte_eth_rss_conf {
#define ETH_RSS_PPPOE (1ULL << 31)
#define ETH_RSS_ECPRI (1ULL << 32)
#define ETH_RSS_MPLS (1ULL << 33)
+#define ETH_RSS_IPV4_CHKSUM (1ULL << 34)
+
+/**
+ * The ETH_RSS_L4_CHKSUM generally refers to a type of checksum field for
+ * any L4 header, such as TCP, UDP and SCTP. It is similar to ETH_RSS_PORT,
+ * it does not specify the type of L4 header.
+ * We use this macro to replace below macro for constricting the use of RSS
+ * offload bits:
+ * ETH_RSS_IPV4_TCP_CHKSUM
+ * ETH_RSS_IPV4_UDP_CHKSUM
+ * ETH_RSS_IPV4_SCTP_CHKSUM
+ * ETH_RSS_IPV6_TCP_CHKSUM
+ * ETH_RSS_IPV6_UDP_CHKSUM
+ * ETH_RSS_IPV6_SCTP_CHKSUM
+ *
+ * Then how to use this macro? We can use it in RSS flow where the pattern
+ * type will specify the L4 header type, for example "flow create 0 ingress \
+ * pattern eth / ipv4 / tcp / end actions rss types l4-chksum end queues end \
+ * / end"
+ * For UDP, the checksum is not required, if the checksum is 0, it will be
+ * treated as a regular checksum with value equal to 0.
+ */
+#define ETH_RSS_L4_CHKSUM (1ULL << 35)
/*
* We use the following macros to combine with above ETH_RSS_* for
--
1.8.3.1
