tools/testing/selftests/bpf/verifier/cgroup_skb.c

{
	"direct packet read test#1 for CGROUP_SKB",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
		    offsetof(struct __sk_buff, data)),
	BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
		    offsetof(struct __sk_buff, data_end)),
	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
		    offsetof(struct __sk_buff, len)),
	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
		    offsetof(struct __sk_buff, pkt_type)),
	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
		    offsetof(struct __sk_buff, mark)),
	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_6,
		    offsetof(struct __sk_buff, mark)),
	BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
		    offsetof(struct __sk_buff, queue_mapping)),
	BPF_LDX_MEM(BPF_W, BPF_REG_8, BPF_REG_1,
		    offsetof(struct __sk_buff, protocol)),
	BPF_LDX_MEM(BPF_W, BPF_REG_9, BPF_REG_1,
		    offsetof(struct __sk_buff, vlan_present)),
	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
	BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
	BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.result_unpriv = REJECT,
	.errstr_unpriv = "invalid bpf_context access off=76 size=4",
	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
	"direct packet read test#2 for CGROUP_SKB",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
		    offsetof(struct __sk_buff, vlan_tci)),
	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
		    offsetof(struct __sk_buff, vlan_proto)),
	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
		    offsetof(struct __sk_buff, priority)),
	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_6,
		    offsetof(struct __sk_buff, priority)),
	BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
		    offsetof(struct __sk_buff, ingress_ifindex)),
	BPF_LDX_MEM(BPF_W, BPF_REG_8, BPF_REG_1,
		    offsetof(struct __sk_buff, tc_index)),
	BPF_LDX_MEM(BPF_W, BPF_REG_9, BPF_REG_1,
		    offsetof(struct __sk_buff, hash)),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
	"direct packet read test#3 for CGROUP_SKB",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
		    offsetof(struct __sk_buff, cb[0])),
	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
		    offsetof(struct __sk_buff, cb[1])),
	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
		    offsetof(struct __sk_buff, cb[2])),
	BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
		    offsetof(struct __sk_buff, cb[3])),
	BPF_LDX_MEM(BPF_W, BPF_REG_8, BPF_REG_1,
		    offsetof(struct __sk_buff, cb[4])),
	BPF_LDX_MEM(BPF_W, BPF_REG_9, BPF_REG_1,
		    offsetof(struct __sk_buff, napi_id)),
	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_4,
		    offsetof(struct __sk_buff, cb[0])),
	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_5,
		    offsetof(struct __sk_buff, cb[1])),
	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_6,
		    offsetof(struct __sk_buff, cb[2])),
	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_7,
		    offsetof(struct __sk_buff, cb[3])),
	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_8,
		    offsetof(struct __sk_buff, cb[4])),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
	"direct packet read test#4 for CGROUP_SKB",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
		    offsetof(struct __sk_buff, family)),
	BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
		    offsetof(struct __sk_buff, remote_ip4)),
	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
		    offsetof(struct __sk_buff, local_ip4)),
	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
		    offsetof(struct __sk_buff, remote_ip6[0])),
	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
		    offsetof(struct __sk_buff, remote_ip6[1])),
	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
		    offsetof(struct __sk_buff, remote_ip6[2])),
	BPF_LDX_MEM(BPF_W, BPF_REG_5, BPF_REG_1,
		    offsetof(struct __sk_buff, remote_ip6[3])),
	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
		    offsetof(struct __sk_buff, local_ip6[0])),
	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
		    offsetof(struct __sk_buff, local_ip6[1])),
	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
		    offsetof(struct __sk_buff, local_ip6[2])),
	BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
		    offsetof(struct __sk_buff, local_ip6[3])),
	BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
		    offsetof(struct __sk_buff, remote_port)),
	BPF_LDX_MEM(BPF_W, BPF_REG_8, BPF_REG_1,
		    offsetof(struct __sk_buff, local_port)),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
	"invalid access of tc_classid for CGROUP_SKB",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct __sk_buff, tc_classid)),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = REJECT,
	.errstr = "invalid bpf_context access",
	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
	"invalid access of data_meta for CGROUP_SKB",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct __sk_buff, data_meta)),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = REJECT,
	.errstr = "invalid bpf_context access",
	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
	"invalid access of flow_keys for CGROUP_SKB",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct __sk_buff, flow_keys)),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = REJECT,
	.errstr = "invalid bpf_context access",
	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
	"invalid write access to napi_id for CGROUP_SKB",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_9, BPF_REG_1,
		    offsetof(struct __sk_buff, napi_id)),
	BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_9,
		    offsetof(struct __sk_buff, napi_id)),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = REJECT,
	.errstr = "invalid bpf_context access",
	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
	"write tstamp from CGROUP_SKB",
	.insns = {
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
		    offsetof(struct __sk_buff, tstamp)),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.result_unpriv = REJECT,
	.errstr_unpriv = "invalid bpf_context access off=152 size=8",
	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
	"read tstamp from CGROUP_SKB",
	.insns = {
	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
		    offsetof(struct __sk_buff, tstamp)),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},