bpf/test: Get rid of 4.9 leftovers

bpf/Makefile

@@ -33,10 +33,8 @@ testdata:
 BUILD_PERMUTATIONS ?= ""
 
 BPF_SIMPLE_OPTIONS += \
-	-DENABLE_IPV4=1 -DENABLE_IPV6=1 -DENABLE_IPSEC=1 -DIP_POOLS=1
-ifneq ("$(KERNEL)","49")
-BPF_SIMPLE_OPTIONS += -DHAVE_LPM_TRIE_MAP_TYPE -DHAVE_LRU_HASH_MAP_TYPE
-endif
+	-DENABLE_IPV4=1 -DENABLE_IPV6=1 -DENABLE_IPSEC=1 -DIP_POOLS=1 \
+	-DHAVE_LPM_TRIE_MAP_TYPE -DHAVE_LRU_HASH_MAP_TYPE
 
 $(BPF_SIMPLE_LL): $(BPF_SIMPLE_C)
 	@$(ECHO_CC)
@@ -86,10 +84,6 @@ MAX_BASE_OPTIONS = -DSKIP_DEBUG=1 -DENABLE_IPV4=1 -DENABLE_IPV6=1 \
 	-DPOLICY_VERDICT_NOTIFY=1 -DALLOW_ICMP_FRAG_NEEDED=1 -DENABLE_IDENTITY_MARK=1 \
 	-DMONITOR_AGGREGATION=3 -DCT_REPORT_FLAGS=0x0002 -DENABLE_HOST_FIREWALL=1 \
 	-DENABLE_ICMP_RULE=1 -DENABLE_CUSTOM_CALLS=1 -DENABLE_SRV6=1 -DENABLE_L7_LB=1
-ifeq ("$(KERNEL)","49")
-# IPSec is incompatible with BPF NodePort so we only enable on 4.9.
-MAX_BASE_OPTIONS += -DENABLE_IPSEC=1 -DIP_POOLS=1
-else
 MAX_BASE_OPTIONS += -DHAVE_LPM_TRIE_MAP_TYPE=1 -DHAVE_LRU_HASH_MAP_TYPE=1 \
 	-DENABLE_MASQUERADE=1 -DENABLE_SRC_RANGE_CHECK=1 -DENABLE_NODEPORT=1 \
 	-DENABLE_NODEPORT_ACCELERATION=1 -DENABLE_SESSION_AFFINITY=1 \
@@ -99,22 +93,19 @@ ifeq ("$(KERNEL)","54")
 MAX_BASE_OPTIONS += -DENABLE_BANDWIDTH_MANAGER=1
 else ifeq ("$(KERNEL)","netnext")
 # We define ETH_HLEN only for net-next, as bpf_skb_change_head is non-available
-# on 4.{9,19}.
+# on 4.19.
 MAX_BASE_OPTIONS += -DENABLE_TPROXY=1 -DENABLE_HOST_ROUTING=1 -DENABLE_BANDWIDTH_MANAGER=1 \
 	-DETH_HLEN=0 -DENABLE_WIREGUARD
 endif
-endif
 # Egress Gateway should only be enabled for >= 5.2 kernels
 ifneq (,$(filter $(KERNEL),"54" "netnext"))
 MAX_BASE_OPTIONS += -DENABLE_EGRESS_GATEWAY=1
 endif
 
 ifndef MAX_LB_OPTIONS
 MAX_LB_OPTIONS = $(MAX_BASE_OPTIONS) -DENABLE_NAT_46X64=1 -DENABLE_NAT_46X64_GATEWAY=1 -DENCAP_IFINDEX=1 -DTUNNEL_MODE=1
-ifneq ("$(KERNEL)","49")
 MAX_LB_OPTIONS += -DLB_SELECTION=1 -DLB_SELECTION_MAGLEV=1
 endif
-endif
 
 bpf_sock.ll: bpf_sock.c $(LIB)
 	$(QUIET) set -e; \
@@ -133,9 +124,7 @@ bpf_sock.o: bpf_sock.ll
 
 ifndef MAX_OVERLAY_OPTIONS
 MAX_OVERLAY_OPTIONS = $(MAX_BASE_OPTIONS) -DENCAP_IFINDEX=1 -DTUNNEL_MODE=1
-ifneq ("$(KERNEL)","49")
 MAX_OVERLAY_OPTIONS += -DLB_SELECTION=1 -DLB_SELECTION_MAGLEV=1
-endif
 ifeq ("$(KERNEL)","54")
 MAX_OVERLAY_OPTIONS+= -DENABLE_VTEP=1
 else ifeq ("$(KERNEL)","netnext")
@@ -218,10 +207,8 @@ XDP_OPTIONS = $(LB_OPTIONS) \
 
 ifndef MAX_XDP_OPTIONS
 MAX_XDP_OPTIONS = $(MAX_BASE_OPTIONS) -DENABLE_PREFILTER=1
-ifneq ("$(KERNEL)","49")
 MAX_XDP_OPTIONS += -DLB_SELECTION=1 -DLB_SELECTION_MAGLEV=1
 endif
-endif
 
 bpf_xdp.ll: bpf_xdp.c $(LIB)
 	$(QUIET) set -e; \

bpf/Makefile.bpf

@@ -14,9 +14,7 @@ CLANG_FLAGS += -Wdeclaration-after-statement
 CLANG_FLAGS += -Wimplicit-int-conversion -Wenum-conversion
 LLC_FLAGS := -march=bpf
 # Mimics the mcpu values set by cilium-agent. See GetBPFCPU().
-ifeq ("$(KERNEL)","49")
-LLC_FLAGS += -mcpu=v1
-else ifeq ("$(KERNEL)","netnext")
+ifeq ("$(KERNEL)","netnext")
 LLC_FLAGS += -mcpu=v3
 else
 LLC_FLAGS += -mcpu=v2

bpf/tests/Makefile

@@ -20,9 +20,7 @@ CLANG_FLAGS += -Wno-gnu-variable-sized-type-not-at-end
 CLANG_FLAGS += -Wimplicit-int-conversion -Wenum-conversion
 LLC_FLAGS := -march=bpf
 # Mimics the mcpu values set by cilium-agent. See GetBPFCPU().
-ifeq ("$(KERNEL)","49")
-LLC_FLAGS += -mcpu=v1
-else ifeq ("$(KERNEL)","netnext")
+ifeq ("$(KERNEL)","netnext")
 LLC_FLAGS += -mcpu=v3
 else
 LLC_FLAGS += -mcpu=v2

test/k8s/verifier.go

@@ -96,7 +96,7 @@ var _ = SkipDescribeIf(helpers.DoesNotRunOn419Kernel, "K8sDatapathVerifier", fun
 	}
 
 	getKernel := func() string {
-		kernel := "49"
+		kernel := "54"
 		switch {
 		case helpers.RunsOnNetNextKernel():
 			kernel = "netnext"

test/verifier/verifier_test.go

@@ -18,7 +18,7 @@ import (
 
 var (
 	ciliumBasePath  = flag.String("cilium-base-path", "", "Cilium checkout base path")
-	ciKernelVersion = flag.String("ci-kernel-version", "", "CI kernel version to assume for verifier tests (supported values: 49, 419, 54, netnext)")
+	ciKernelVersion = flag.String("ci-kernel-version", "", "CI kernel version to assume for verifier tests (supported values: 419, 54, netnext)")
 )
 
 func getCIKernelVersion(t *testing.T) string {
@@ -35,8 +35,6 @@ func getCIKernelVersion(t *testing.T) string {
 
 	var ciKernel string
 	switch {
-	case strings.HasPrefix(release, "4.9"):
-		ciKernel = "49"
 	case strings.HasPrefix(release, "4.19"):
 		ciKernel = "419"
 	case strings.HasPrefix(release, "5.4"):