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Open Menu /tools/testing/selftests/bpf/verifier/ctx_sk_msg.c 
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{
	"valid access family in SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, family)),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
},
{
	"valid access remote_ip4 in SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, remote_ip4)),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
},
{
	"valid access local_ip4 in SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, local_ip4)),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
},
{
	"valid access remote_port in SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, remote_port)),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
},
{
	"valid access local_port in SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, local_port)),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
},
{
	"valid access remote_ip6 in SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, remote_ip6[0])),
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, remote_ip6[1])),
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, remote_ip6[2])),
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, remote_ip6[3])),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
	"valid access local_ip6 in SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, local_ip6[0])),
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, local_ip6[1])),
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, local_ip6[2])),
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, local_ip6[3])),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
	"valid access size in SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
		    offsetof(struct sk_msg_md, size)),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
},
{
	"invalid 64B read of size in SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1,
		    offsetof(struct sk_msg_md, size)),
	BPF_EXIT_INSN(),
	},
	.errstr = "invalid bpf_context access",
	.result = REJECT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
	.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
	"invalid read past end of SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
		    offsetof(struct sk_msg_md, size) + 4),
	BPF_EXIT_INSN(),
	},
	.errstr = "invalid bpf_context access",
	.result = REJECT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
},
{
	"invalid read offset in SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
		    offsetof(struct sk_msg_md, family) + 1),
	BPF_EXIT_INSN(),
	},
	.errstr = "invalid bpf_context access",
	.result = REJECT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
	.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
	"direct packet read for SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1,
		    offsetof(struct sk_msg_md, data)),
	BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_1,
		    offsetof(struct sk_msg_md, data_end)),
	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,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
},
{
	"direct packet write for SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1,
		    offsetof(struct sk_msg_md, data)),
	BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_1,
		    offsetof(struct sk_msg_md, data_end)),
	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_STX_MEM(BPF_B, BPF_REG_2, BPF_REG_2, 0),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
},
{
	"overlapping checks for direct packet access SK_MSG",
	.insns = {
	BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1,
		    offsetof(struct sk_msg_md, data)),
	BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_1,
		    offsetof(struct sk_msg_md, data_end)),
	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, 4),
	BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 6),
	BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 1),
	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_2, 6),
	BPF_MOV64_IMM(BPF_REG_0, 0),
	BPF_EXIT_INSN(),
	},
	.result = ACCEPT,
	.prog_type = BPF_PROG_TYPE_SK_MSG,
},