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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 | // SPDX-License-Identifier: GPL-2.0 /* Converted from tools/testing/selftests/bpf/verifier/cgroup_skb.c */ #include <linux/bpf.h> #include <bpf/bpf_helpers.h> #include "bpf_misc.h" SEC("cgroup/skb") __description("direct packet read test#1 for CGROUP_SKB") __success __failure_unpriv __msg_unpriv("invalid bpf_context access off=76 size=4") __retval(0) __naked void test_1_for_cgroup_skb(void) { asm volatile (" \ r2 = *(u32*)(r1 + %[__sk_buff_data]); \ r3 = *(u32*)(r1 + %[__sk_buff_data_end]); \ r4 = *(u32*)(r1 + %[__sk_buff_len]); \ r5 = *(u32*)(r1 + %[__sk_buff_pkt_type]); \ r6 = *(u32*)(r1 + %[__sk_buff_mark]); \ *(u32*)(r1 + %[__sk_buff_mark]) = r6; \ r7 = *(u32*)(r1 + %[__sk_buff_queue_mapping]); \ r8 = *(u32*)(r1 + %[__sk_buff_protocol]); \ r9 = *(u32*)(r1 + %[__sk_buff_vlan_present]); \ r0 = r2; \ r0 += 8; \ if r0 > r3 goto l0_%=; \ r0 = *(u8*)(r2 + 0); \ l0_%=: r0 = 0; \ exit; \ " : : __imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)), __imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end)), __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len)), __imm_const(__sk_buff_mark, offsetof(struct __sk_buff, mark)), __imm_const(__sk_buff_pkt_type, offsetof(struct __sk_buff, pkt_type)), __imm_const(__sk_buff_protocol, offsetof(struct __sk_buff, protocol)), __imm_const(__sk_buff_queue_mapping, offsetof(struct __sk_buff, queue_mapping)), __imm_const(__sk_buff_vlan_present, offsetof(struct __sk_buff, vlan_present)) : __clobber_all); } SEC("cgroup/skb") __description("direct packet read test#2 for CGROUP_SKB") __success __success_unpriv __retval(0) __naked void test_2_for_cgroup_skb(void) { asm volatile (" \ r4 = *(u32*)(r1 + %[__sk_buff_vlan_tci]); \ r5 = *(u32*)(r1 + %[__sk_buff_vlan_proto]); \ r6 = *(u32*)(r1 + %[__sk_buff_priority]); \ *(u32*)(r1 + %[__sk_buff_priority]) = r6; \ r7 = *(u32*)(r1 + %[__sk_buff_ingress_ifindex]);\ r8 = *(u32*)(r1 + %[__sk_buff_tc_index]); \ r9 = *(u32*)(r1 + %[__sk_buff_hash]); \ r0 = 0; \ exit; \ " : : __imm_const(__sk_buff_hash, offsetof(struct __sk_buff, hash)), __imm_const(__sk_buff_ingress_ifindex, offsetof(struct __sk_buff, ingress_ifindex)), __imm_const(__sk_buff_priority, offsetof(struct __sk_buff, priority)), __imm_const(__sk_buff_tc_index, offsetof(struct __sk_buff, tc_index)), __imm_const(__sk_buff_vlan_proto, offsetof(struct __sk_buff, vlan_proto)), __imm_const(__sk_buff_vlan_tci, offsetof(struct __sk_buff, vlan_tci)) : __clobber_all); } SEC("cgroup/skb") __description("direct packet read test#3 for CGROUP_SKB") __success __success_unpriv __retval(0) __naked void test_3_for_cgroup_skb(void) { asm volatile (" \ r4 = *(u32*)(r1 + %[__sk_buff_cb_0]); \ r5 = *(u32*)(r1 + %[__sk_buff_cb_1]); \ r6 = *(u32*)(r1 + %[__sk_buff_cb_2]); \ r7 = *(u32*)(r1 + %[__sk_buff_cb_3]); \ r8 = *(u32*)(r1 + %[__sk_buff_cb_4]); \ r9 = *(u32*)(r1 + %[__sk_buff_napi_id]); \ *(u32*)(r1 + %[__sk_buff_cb_0]) = r4; \ *(u32*)(r1 + %[__sk_buff_cb_1]) = r5; \ *(u32*)(r1 + %[__sk_buff_cb_2]) = r6; \ *(u32*)(r1 + %[__sk_buff_cb_3]) = r7; \ *(u32*)(r1 + %[__sk_buff_cb_4]) = r8; \ r0 = 0; \ exit; \ " : : __imm_const(__sk_buff_cb_0, offsetof(struct __sk_buff, cb[0])), __imm_const(__sk_buff_cb_1, offsetof(struct __sk_buff, cb[1])), __imm_const(__sk_buff_cb_2, offsetof(struct __sk_buff, cb[2])), __imm_const(__sk_buff_cb_3, offsetof(struct __sk_buff, cb[3])), __imm_const(__sk_buff_cb_4, offsetof(struct __sk_buff, cb[4])), __imm_const(__sk_buff_napi_id, offsetof(struct __sk_buff, napi_id)) : __clobber_all); } SEC("cgroup/skb") __description("direct packet read test#4 for CGROUP_SKB") __success __success_unpriv __retval(0) __naked void test_4_for_cgroup_skb(void) { asm volatile (" \ r2 = *(u32*)(r1 + %[__sk_buff_family]); \ r3 = *(u32*)(r1 + %[__sk_buff_remote_ip4]); \ r4 = *(u32*)(r1 + %[__sk_buff_local_ip4]); \ r5 = *(u32*)(r1 + %[__sk_buff_remote_ip6_0]); \ r5 = *(u32*)(r1 + %[__sk_buff_remote_ip6_1]); \ r5 = *(u32*)(r1 + %[__sk_buff_remote_ip6_2]); \ r5 = *(u32*)(r1 + %[__sk_buff_remote_ip6_3]); \ r6 = *(u32*)(r1 + %[__sk_buff_local_ip6_0]); \ r6 = *(u32*)(r1 + %[__sk_buff_local_ip6_1]); \ r6 = *(u32*)(r1 + %[__sk_buff_local_ip6_2]); \ r6 = *(u32*)(r1 + %[__sk_buff_local_ip6_3]); \ r7 = *(u32*)(r1 + %[__sk_buff_remote_port]); \ r8 = *(u32*)(r1 + %[__sk_buff_local_port]); \ r0 = 0; \ exit; \ " : : __imm_const(__sk_buff_family, offsetof(struct __sk_buff, family)), __imm_const(__sk_buff_local_ip4, offsetof(struct __sk_buff, local_ip4)), __imm_const(__sk_buff_local_ip6_0, offsetof(struct __sk_buff, local_ip6[0])), __imm_const(__sk_buff_local_ip6_1, offsetof(struct __sk_buff, local_ip6[1])), __imm_const(__sk_buff_local_ip6_2, offsetof(struct __sk_buff, local_ip6[2])), __imm_const(__sk_buff_local_ip6_3, offsetof(struct __sk_buff, local_ip6[3])), __imm_const(__sk_buff_local_port, offsetof(struct __sk_buff, local_port)), __imm_const(__sk_buff_remote_ip4, offsetof(struct __sk_buff, remote_ip4)), __imm_const(__sk_buff_remote_ip6_0, offsetof(struct __sk_buff, remote_ip6[0])), __imm_const(__sk_buff_remote_ip6_1, offsetof(struct __sk_buff, remote_ip6[1])), __imm_const(__sk_buff_remote_ip6_2, offsetof(struct __sk_buff, remote_ip6[2])), __imm_const(__sk_buff_remote_ip6_3, offsetof(struct __sk_buff, remote_ip6[3])), __imm_const(__sk_buff_remote_port, offsetof(struct __sk_buff, remote_port)) : __clobber_all); } SEC("cgroup/skb") __description("invalid access of tc_classid for CGROUP_SKB") __failure __msg("invalid bpf_context access") __failure_unpriv __naked void tc_classid_for_cgroup_skb(void) { asm volatile (" \ r0 = *(u32*)(r1 + %[__sk_buff_tc_classid]); \ r0 = 0; \ exit; \ " : : __imm_const(__sk_buff_tc_classid, offsetof(struct __sk_buff, tc_classid)) : __clobber_all); } SEC("cgroup/skb") __description("invalid access of data_meta for CGROUP_SKB") __failure __msg("invalid bpf_context access") __failure_unpriv __naked void data_meta_for_cgroup_skb(void) { asm volatile (" \ r0 = *(u32*)(r1 + %[__sk_buff_data_meta]); \ r0 = 0; \ exit; \ " : : __imm_const(__sk_buff_data_meta, offsetof(struct __sk_buff, data_meta)) : __clobber_all); } SEC("cgroup/skb") __description("invalid access of flow_keys for CGROUP_SKB") __failure __msg("invalid bpf_context access") __failure_unpriv __naked void flow_keys_for_cgroup_skb(void) { asm volatile (" \ r0 = *(u32*)(r1 + %[__sk_buff_flow_keys]); \ r0 = 0; \ exit; \ " : : __imm_const(__sk_buff_flow_keys, offsetof(struct __sk_buff, flow_keys)) : __clobber_all); } SEC("cgroup/skb") __description("invalid write access to napi_id for CGROUP_SKB") __failure __msg("invalid bpf_context access") __failure_unpriv __naked void napi_id_for_cgroup_skb(void) { asm volatile (" \ r9 = *(u32*)(r1 + %[__sk_buff_napi_id]); \ *(u32*)(r1 + %[__sk_buff_napi_id]) = r9; \ r0 = 0; \ exit; \ " : : __imm_const(__sk_buff_napi_id, offsetof(struct __sk_buff, napi_id)) : __clobber_all); } SEC("cgroup/skb") __description("write tstamp from CGROUP_SKB") __success __failure_unpriv __msg_unpriv("invalid bpf_context access off=152 size=8") __retval(0) __naked void write_tstamp_from_cgroup_skb(void) { asm volatile (" \ r0 = 0; \ *(u64*)(r1 + %[__sk_buff_tstamp]) = r0; \ r0 = 0; \ exit; \ " : : __imm_const(__sk_buff_tstamp, offsetof(struct __sk_buff, tstamp)) : __clobber_all); } SEC("cgroup/skb") __description("read tstamp from CGROUP_SKB") __success __success_unpriv __retval(0) __naked void read_tstamp_from_cgroup_skb(void) { asm volatile (" \ r0 = *(u64*)(r1 + %[__sk_buff_tstamp]); \ r0 = 0; \ exit; \ " : : __imm_const(__sk_buff_tstamp, offsetof(struct __sk_buff, tstamp)) : __clobber_all); } char _license[] SEC("license") = "GPL"; |