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-rw-r--r--lib/test_bpf.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index e2617516d31f..f18b7b8e60ec 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -4493,6 +4493,148 @@ static struct bpf_test tests[] = {
{ { 1, 0xbef } },
.fill_helper = bpf_fill_ld_abs_vlan_push_pop,
},
+ /*
+ * LD_IND / LD_ABS on fragmented SKBs
+ */
+ {
+ "LD_IND byte frag",
+ .u.insns = {
+ BPF_STMT(BPF_LDX | BPF_IMM, 0x40),
+ BPF_STMT(BPF_LD | BPF_IND | BPF_B, 0x0),
+ BPF_STMT(BPF_RET | BPF_A, 0x0),
+ },
+ CLASSIC | FLAG_SKB_FRAG,
+ { },
+ { {0x40, 0x42} },
+ .frag_data = {
+ 0x42, 0x00, 0x00, 0x00,
+ 0x43, 0x44, 0x00, 0x00,
+ 0x21, 0x07, 0x19, 0x83,
+ },
+ },
+ {
+ "LD_IND halfword frag",
+ .u.insns = {
+ BPF_STMT(BPF_LDX | BPF_IMM, 0x40),
+ BPF_STMT(BPF_LD | BPF_IND | BPF_H, 0x4),
+ BPF_STMT(BPF_RET | BPF_A, 0x0),
+ },
+ CLASSIC | FLAG_SKB_FRAG,
+ { },
+ { {0x40, 0x4344} },
+ .frag_data = {
+ 0x42, 0x00, 0x00, 0x00,
+ 0x43, 0x44, 0x00, 0x00,
+ 0x21, 0x07, 0x19, 0x83,
+ },
+ },
+ {
+ "LD_IND word frag",
+ .u.insns = {
+ BPF_STMT(BPF_LDX | BPF_IMM, 0x40),
+ BPF_STMT(BPF_LD | BPF_IND | BPF_W, 0x8),
+ BPF_STMT(BPF_RET | BPF_A, 0x0),
+ },
+ CLASSIC | FLAG_SKB_FRAG,
+ { },
+ { {0x40, 0x21071983} },
+ .frag_data = {
+ 0x42, 0x00, 0x00, 0x00,
+ 0x43, 0x44, 0x00, 0x00,
+ 0x21, 0x07, 0x19, 0x83,
+ },
+ },
+ {
+ "LD_IND halfword mixed head/frag",
+ .u.insns = {
+ BPF_STMT(BPF_LDX | BPF_IMM, 0x40),
+ BPF_STMT(BPF_LD | BPF_IND | BPF_H, -0x1),
+ BPF_STMT(BPF_RET | BPF_A, 0x0),
+ },
+ CLASSIC | FLAG_SKB_FRAG,
+ { [0x3e] = 0x25, [0x3f] = 0x05, },
+ { {0x40, 0x0519} },
+ .frag_data = { 0x19, 0x82 },
+ },
+ {
+ "LD_IND word mixed head/frag",
+ .u.insns = {
+ BPF_STMT(BPF_LDX | BPF_IMM, 0x40),
+ BPF_STMT(BPF_LD | BPF_IND | BPF_W, -0x2),
+ BPF_STMT(BPF_RET | BPF_A, 0x0),
+ },
+ CLASSIC | FLAG_SKB_FRAG,
+ { [0x3e] = 0x25, [0x3f] = 0x05, },
+ { {0x40, 0x25051982} },
+ .frag_data = { 0x19, 0x82 },
+ },
+ {
+ "LD_ABS byte frag",
+ .u.insns = {
+ BPF_STMT(BPF_LD | BPF_ABS | BPF_B, 0x40),
+ BPF_STMT(BPF_RET | BPF_A, 0x0),
+ },
+ CLASSIC | FLAG_SKB_FRAG,
+ { },
+ { {0x40, 0x42} },
+ .frag_data = {
+ 0x42, 0x00, 0x00, 0x00,
+ 0x43, 0x44, 0x00, 0x00,
+ 0x21, 0x07, 0x19, 0x83,
+ },
+ },
+ {
+ "LD_ABS halfword frag",
+ .u.insns = {
+ BPF_STMT(BPF_LD | BPF_ABS | BPF_H, 0x44),
+ BPF_STMT(BPF_RET | BPF_A, 0x0),
+ },
+ CLASSIC | FLAG_SKB_FRAG,
+ { },
+ { {0x40, 0x4344} },
+ .frag_data = {
+ 0x42, 0x00, 0x00, 0x00,
+ 0x43, 0x44, 0x00, 0x00,
+ 0x21, 0x07, 0x19, 0x83,
+ },
+ },
+ {
+ "LD_ABS word frag",
+ .u.insns = {
+ BPF_STMT(BPF_LD | BPF_ABS | BPF_W, 0x48),
+ BPF_STMT(BPF_RET | BPF_A, 0x0),
+ },
+ CLASSIC | FLAG_SKB_FRAG,
+ { },
+ { {0x40, 0x21071983} },
+ .frag_data = {
+ 0x42, 0x00, 0x00, 0x00,
+ 0x43, 0x44, 0x00, 0x00,
+ 0x21, 0x07, 0x19, 0x83,
+ },
+ },
+ {
+ "LD_ABS halfword mixed head/frag",
+ .u.insns = {
+ BPF_STMT(BPF_LD | BPF_ABS | BPF_H, 0x3f),
+ BPF_STMT(BPF_RET | BPF_A, 0x0),
+ },
+ CLASSIC | FLAG_SKB_FRAG,
+ { [0x3e] = 0x25, [0x3f] = 0x05, },
+ { {0x40, 0x0519} },
+ .frag_data = { 0x19, 0x82 },
+ },
+ {
+ "LD_ABS word mixed head/frag",
+ .u.insns = {
+ BPF_STMT(BPF_LD | BPF_ABS | BPF_W, 0x3e),
+ BPF_STMT(BPF_RET | BPF_A, 0x0),
+ },
+ CLASSIC | FLAG_SKB_FRAG,
+ { [0x3e] = 0x25, [0x3f] = 0x05, },
+ { {0x40, 0x25051982} },
+ .frag_data = { 0x19, 0x82 },
+ },
};
static struct net_device dev;