all: require eFW 0.21.0

Update version strings to match reality and update the readme.

Signed-off-by: Lorenz Bauer <[email protected]>

Author: lmb

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ on:
 env:
   TMPDIR: /tmp
   CI_MAX_KERNEL_VERSION: '6.11'
-  CI_MAX_EFW_VERSION: '0.20.0'
+  CI_MAX_EFW_VERSION: '0.21.0'
   CI_MIN_CLANG_VERSION: '13'
   go_version: '~1.24'
   prev_go_version: '~1.23'
@@ -238,7 +238,7 @@ jobs:
       GOMODCACHE: D:\gomodcache
       # Avoid putting temp on slow C:
       TEMP: D:\temp
-      CI_EFW_VERSION: "0.20.0"
+      CI_EFW_VERSION: "0.21.0"
 
     steps:
       - run: mkdir D:\temp

README.md

@@ -59,8 +59,10 @@ This library includes the following packages:
 
 * A version of Go that is [supported by
   upstream](https://golang.org/doc/devel/release.html#policy)
-* CI is run against kernel.org LTS releases. >= 4.4 should work but EOL'ed versions
-  are not supported.
+* Linux: CI is run against kernel.org LTS releases. >= 4.4 should work but EOL'ed
+  versions are not supported.
+* Windows: CI is run against Windows Server 2022. Only the latest eBPF for Windows
+  release is supported.
 
 ## License
 

info.go

@@ -857,4 +857,4 @@ var haveProgramInfoMapIDs = internal.NewFeatureTest("map IDs in program info", f
 	}
 
 	return err
-}, "4.15", "windows:0.20.0")
+}, "4.15", "windows:0.21.0")

syscalls.go

@@ -100,7 +100,7 @@ var haveNestedMaps = internal.NewFeatureTest("nested maps", func() error {
 		return nil
 	}
 	return err
-}, "4.12", "windows:0.20.0")
+}, "4.12", "windows:0.21.0")
 
 var haveMapMutabilityModifiers = internal.NewFeatureTest("read- and write-only maps", func() error {
 	// This checks BPF_F_RDONLY_PROG and BPF_F_WRONLY_PROG. Since
@@ -214,7 +214,7 @@ var haveObjName = internal.NewFeatureTest("object names", func() error {
 
 	_ = fd.Close()
 	return nil
-}, "4.15", "windows:0.20.0")
+}, "4.15", "windows:0.21.0")
 
 var objNameAllowsDot = internal.NewFeatureTest("dot in object names", func() error {
 	if platform.IsWindows {
@@ -241,7 +241,7 @@ var objNameAllowsDot = internal.NewFeatureTest("dot in object names", func() err
 
 	_ = fd.Close()
 	return nil
-}, "5.2", "windows:0.20.0")
+}, "5.2", "windows:0.21.0")
 
 var haveBatchAPI = internal.NewFeatureTest("map batch api", func() error {
 	var maxEntries uint32 = 2