From a6491a8e84979a5a838f0a91ba5b4ba938818b50 Mon Sep 17 00:00:00 2001
From: Jamie Pryde <jamiepry@uk.ibm.com>
Date: Wed, 13 Aug 2025 21:42:17 +0100
Subject: [PATCH] erasure-code: Fix to set
 FLAG_EC_PLUGIN_CRC_ENCODE_DECODE_SUPPORT for ISA-L cauchy

Signed-off-by: Jamie Pryde <jamiepry@uk.ibm.com>
---
 src/erasure-code/isa/ErasureCodeIsa.h             | 14 ++++++++------
 src/erasure-code/isa/ErasureCodePluginIsa.cc      |  7 +++++--
 src/test/erasure-code/TestErasureCodePluginIsa.cc |  1 +
 3 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/src/erasure-code/isa/ErasureCodeIsa.h b/src/erasure-code/isa/ErasureCodeIsa.h
index 19e654f2ea8..ae14b1d6aac 100644
--- a/src/erasure-code/isa/ErasureCodeIsa.h
+++ b/src/erasure-code/isa/ErasureCodeIsa.h
@@ -57,7 +57,8 @@ public:
   uint64_t flags;
 
   ErasureCodeIsa(const std::string &_technique,
-                 ErasureCodeIsaTableCache &_tcache) :
+                 ErasureCodeIsaTableCache &_tcache,
+                 const std::string &_m = "0") :
   k(0),
   m(0),
   w(0),
@@ -71,9 +72,9 @@ public:
             FLAG_EC_PLUGIN_PARITY_DELTA_OPTIMIZATION;
 
     if (technique == "reed_sol_van"sv) {
-      flags |= FLAG_EC_PLUGIN_CRC_ENCODE_DECODE_SUPPORT;
-    } else if (technique == "cauchy"sv && m == 1) {
-      flags |= FLAG_EC_PLUGIN_CRC_ENCODE_DECODE_SUPPORT;
+       flags |= FLAG_EC_PLUGIN_CRC_ENCODE_DECODE_SUPPORT;
+    } else if (technique == "cauchy"sv && _m == "1"sv) {
+       flags |= FLAG_EC_PLUGIN_CRC_ENCODE_DECODE_SUPPORT;
     }
   }
 
@@ -154,8 +155,9 @@ public:
 
   ErasureCodeIsaDefault(ErasureCodeIsaTableCache &_tcache,
                         const std::string& technique,
-                        int matrix = kVandermonde) :
-  ErasureCodeIsa(technique, _tcache),
+                        int matrix = kVandermonde,
+                        const std::string &_m = "0") :
+  ErasureCodeIsa(technique, _tcache, _m),
   encode_coeff(0), encode_tbls(0)
   {
     matrixtype = matrix;
diff --git a/src/erasure-code/isa/ErasureCodePluginIsa.cc b/src/erasure-code/isa/ErasureCodePluginIsa.cc
index 80a4b803de1..7904f407d7c 100644
--- a/src/erasure-code/isa/ErasureCodePluginIsa.cc
+++ b/src/erasure-code/isa/ErasureCodePluginIsa.cc
@@ -38,14 +38,17 @@ int ErasureCodePluginIsa::factory(const std::string &directory,
   ErasureCodeIsa *interface;
     std::string technique;
     technique = profile.find("technique")->second;
+    std::string _m = profile.find("m")->second;
     if ((technique == "reed_sol_van")) {
       interface = new ErasureCodeIsaDefault(tcache,
                                             technique,
-                                            ErasureCodeIsaDefault::kVandermonde);
+                                            ErasureCodeIsaDefault::kVandermonde,
+                                            _m);
     } else if ((technique == "cauchy")) {
       interface = new ErasureCodeIsaDefault(tcache,
                                             technique,
-                                            ErasureCodeIsaDefault::kCauchy);
+                                            ErasureCodeIsaDefault::kCauchy,
+                                            _m);
     } else {
       *ss << "technique=" << technique << " is not a valid coding technique. "
         << " Choose one of the following: "
diff --git a/src/test/erasure-code/TestErasureCodePluginIsa.cc b/src/test/erasure-code/TestErasureCodePluginIsa.cc
index 86bac636dcc..26032169e46 100644
--- a/src/test/erasure-code/TestErasureCodePluginIsa.cc
+++ b/src/test/erasure-code/TestErasureCodePluginIsa.cc
@@ -43,6 +43,7 @@ TEST(ErasureCodePlugin, factory)
   for(const char **technique = techniques; *technique; technique++) {
     ErasureCodeInterfaceRef erasure_code;
     profile["technique"] = *technique;
+    profile["m"] = "2";
     EXPECT_FALSE(erasure_code);
     EXPECT_EQ(0, instance.factory("isa",
 				  g_conf().get_val<std::string>("erasure_code_dir"),
-- 
2.39.5