[openwrt/openwrt] generic: backport some flow offload helper patch
LEDE Commits
lede-commits at lists.infradead.org
Thu Aug 21 08:07:51 PDT 2025
ansuel pushed a commit to openwrt/openwrt.git, branch openwrt-24.10:
https://git.openwrt.org/97a75a72e3fffdc686c7ed7d0bb794f29a682221
commit 97a75a72e3fffdc686c7ed7d0bb794f29a682221
Author: Christian Marangi <ansuelsmth at gmail.com>
AuthorDate: Wed Feb 5 22:23:21 2025 +0100
generic: backport some flow offload helper patch
Backport some flow offload helper patch in preparation for Airoha Flow
Offload support.
Link: https://github.com/openwrt/openwrt/pull/18166
(cherry picked from commit 34ba7e8a8ab10900a3ca80fc40e7cafd1e7edb50)
[ drop merged patch 705-v6.12-netdevice-add-netdev... ]
Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
...offload-add-control-flag-checking-helpers.patch | 101 +++++++++++++++++++++
...pv6_addr_-cpu_to_be32-be32_to_cpu-helpers.patch | 40 ++++++++
2 files changed, 141 insertions(+)
diff --git a/target/linux/generic/backport-6.6/703-v6.10-flow_offload-add-control-flag-checking-helpers.patch b/target/linux/generic/backport-6.6/703-v6.10-flow_offload-add-control-flag-checking-helpers.patch
new file mode 100644
index 0000000000..457dac16d4
--- /dev/null
+++ b/target/linux/generic/backport-6.6/703-v6.10-flow_offload-add-control-flag-checking-helpers.patch
@@ -0,0 +1,101 @@
+From d11e63119432bdb55065d094cb6fd37e9147c70d Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Asbj=C3=B8rn=20Sloth=20T=C3=B8nnesen?= <ast at fiberby.net>
+Date: Thu, 11 Apr 2024 10:52:54 +0000
+Subject: [PATCH] flow_offload: add control flag checking helpers
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+These helpers aim to help drivers, with checking
+for the presence of unsupported control flags.
+
+For drivers supporting at least one control flag:
+ flow_rule_is_supp_control_flags()
+
+For drivers using flow_rule_match_control(), but not using flags:
+ flow_rule_has_control_flags()
+
+For drivers not using flow_rule_match_control():
+ flow_rule_match_has_control_flags()
+
+While primarily aimed at FLOW_DISSECTOR_KEY_CONTROL
+and flow_rule_match_control(), then the first two
+can also be used with FLOW_DISSECTOR_KEY_ENC_CONTROL
+and flow_rule_match_enc_control().
+
+These helpers mirrors the existing check done in sfc:
+ drivers/net/ethernet/sfc/tc.c +276
+
+Only compile-tested.
+
+Signed-off-by: Asbjørn Sloth Tønnesen <ast at fiberby.net>
+Reviewed-by: Louis Peens <louis.peens at corigine.com>
+Signed-off-by: David S. Miller <davem at davemloft.net>
+---
+ include/net/flow_offload.h | 55 ++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 55 insertions(+)
+
+--- a/include/net/flow_offload.h
++++ b/include/net/flow_offload.h
+@@ -449,6 +449,61 @@ static inline bool flow_rule_match_key(c
+ return dissector_uses_key(rule->match.dissector, key);
+ }
+
++/**
++ * flow_rule_is_supp_control_flags() - check for supported control flags
++ * @supp_flags: control flags supported by driver
++ * @ctrl_flags: control flags present in rule
++ * @extack: The netlink extended ACK for reporting errors.
++ *
++ * Return: true if only supported control flags are set, false otherwise.
++ */
++static inline bool flow_rule_is_supp_control_flags(const u32 supp_flags,
++ const u32 ctrl_flags,
++ struct netlink_ext_ack *extack)
++{
++ if (likely((ctrl_flags & ~supp_flags) == 0))
++ return true;
++
++ NL_SET_ERR_MSG_FMT_MOD(extack,
++ "Unsupported match on control.flags %#x",
++ ctrl_flags);
++
++ return false;
++}
++
++/**
++ * flow_rule_has_control_flags() - check for presence of any control flags
++ * @ctrl_flags: control flags present in rule
++ * @extack: The netlink extended ACK for reporting errors.
++ *
++ * Return: true if control flags are set, false otherwise.
++ */
++static inline bool flow_rule_has_control_flags(const u32 ctrl_flags,
++ struct netlink_ext_ack *extack)
++{
++ return !flow_rule_is_supp_control_flags(0, ctrl_flags, extack);
++}
++
++/**
++ * flow_rule_match_has_control_flags() - match and check for any control flags
++ * @rule: The flow_rule under evaluation.
++ * @extack: The netlink extended ACK for reporting errors.
++ *
++ * Return: true if control flags are set, false otherwise.
++ */
++static inline bool flow_rule_match_has_control_flags(struct flow_rule *rule,
++ struct netlink_ext_ack *extack)
++{
++ struct flow_match_control match;
++
++ if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL))
++ return false;
++
++ flow_rule_match_control(rule, &match);
++
++ return flow_rule_has_control_flags(match.mask->flags, extack);
++}
++
+ struct flow_stats {
+ u64 pkts;
+ u64 bytes;
diff --git a/target/linux/generic/backport-6.6/704-v6.12-ipv6-Add-ipv6_addr_-cpu_to_be32-be32_to_cpu-helpers.patch b/target/linux/generic/backport-6.6/704-v6.12-ipv6-Add-ipv6_addr_-cpu_to_be32-be32_to_cpu-helpers.patch
new file mode 100644
index 0000000000..2f4eec6953
--- /dev/null
+++ b/target/linux/generic/backport-6.6/704-v6.12-ipv6-Add-ipv6_addr_-cpu_to_be32-be32_to_cpu-helpers.patch
@@ -0,0 +1,40 @@
+From f40a455d01f80c6638be382d75cb1c4e7748d8af Mon Sep 17 00:00:00 2001
+From: Simon Horman <horms at kernel.org>
+Date: Tue, 13 Aug 2024 14:33:47 +0100
+Subject: [PATCH] ipv6: Add ipv6_addr_{cpu_to_be32,be32_to_cpu} helpers
+
+Add helpers to convert an ipv6 addr, expressed as an array
+of words, from CPU to big-endian byte order, and vice versa.
+
+No functional change intended.
+Compile tested only.
+
+Suggested-by: Andrew Lunn <andrew at lunn.ch>
+Link: https://lore.kernel.org/netdev/c7684349-535c-45a4-9a74-d47479a50020@lunn.ch/
+Reviewed-by: Andrew Lunn <andrew at lunn.ch>
+Signed-off-by: Simon Horman <horms at kernel.org>
+Link: https://patch.msgid.link/20240813-ipv6_addr-helpers-v2-1-5c974f8cca3e@kernel.org
+Signed-off-by: Jakub Kicinski <kuba at kernel.org>
+---
+ include/net/ipv6.h | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+--- a/include/net/ipv6.h
++++ b/include/net/ipv6.h
+@@ -1382,4 +1382,16 @@ static inline void ip6_sock_set_recvpkti
+ release_sock(sk);
+ }
+
++#define IPV6_ADDR_WORDS 4
++
++static inline void ipv6_addr_cpu_to_be32(__be32 *dst, const u32 *src)
++{
++ cpu_to_be32_array(dst, src, IPV6_ADDR_WORDS);
++}
++
++static inline void ipv6_addr_be32_to_cpu(u32 *dst, const __be32 *src)
++{
++ be32_to_cpu_array(dst, src, IPV6_ADDR_WORDS);
++}
++
+ #endif /* _NET_IPV6_H */
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