190 lines
5.2 KiB
C
190 lines
5.2 KiB
C
{
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"invalid direct packet write for LWT_IN",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
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BPF_STX_MEM(BPF_B, BPF_REG_2, BPF_REG_2, 0),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "cannot write into packet",
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.result = REJECT,
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.prog_type = BPF_PROG_TYPE_LWT_IN,
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},
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{
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"invalid direct packet write for LWT_OUT",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
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BPF_STX_MEM(BPF_B, BPF_REG_2, BPF_REG_2, 0),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "cannot write into packet",
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.result = REJECT,
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.prog_type = BPF_PROG_TYPE_LWT_OUT,
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},
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{
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"direct packet write for LWT_XMIT",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
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BPF_STX_MEM(BPF_B, BPF_REG_2, BPF_REG_2, 0),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_LWT_XMIT,
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},
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{
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"direct packet read for LWT_IN",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_LWT_IN,
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},
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{
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"direct packet read for LWT_OUT",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_LWT_OUT,
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},
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{
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"direct packet read for LWT_XMIT",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
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BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_LWT_XMIT,
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},
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{
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"overlapping checks for direct packet access",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 4),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 6),
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BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 1),
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BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_2, 6),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_LWT_XMIT,
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},
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{
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"make headroom for LWT_XMIT",
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.insns = {
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BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
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BPF_MOV64_IMM(BPF_REG_2, 34),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_EMIT_CALL(BPF_FUNC_skb_change_head),
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/* split for s390 to succeed */
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_MOV64_IMM(BPF_REG_2, 42),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_EMIT_CALL(BPF_FUNC_skb_change_head),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_LWT_XMIT,
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},
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{
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"invalid access of tc_classid for LWT_IN",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct __sk_buff, tc_classid)),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "invalid bpf_context access",
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},
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{
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"invalid access of tc_classid for LWT_OUT",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct __sk_buff, tc_classid)),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "invalid bpf_context access",
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},
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{
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"invalid access of tc_classid for LWT_XMIT",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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offsetof(struct __sk_buff, tc_classid)),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "invalid bpf_context access",
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},
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{
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"check skb->tc_classid half load not permitted for lwt prog",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
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offsetof(struct __sk_buff, tc_classid)),
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#else
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BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
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offsetof(struct __sk_buff, tc_classid) + 2),
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#endif
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "invalid bpf_context access",
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.prog_type = BPF_PROG_TYPE_LWT_IN,
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},
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