tree: git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-linux-5.4.y head: 3cdbcdd591d4a26a51eba81bba6422754950f98d commit: 0ec7a6a2598dfb3920edb0551529a803dd56c346 [7333/7338] net: ti: prueth_core: add helper functions to support lre offload config: arm-allyesconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 0ec7a6a2598dfb3920edb0551529a803dd56c346 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 120 | void pru_spin_lock(struct node_tbl *nt) | ^~~~~~~~~~~~~ 267 | void node_table_update_time(struct node_tbl *nt) | ^~~~~~~~~~~~~~~~~~~~~~ 470 | void node_table_check_and_remove(struct node_tbl *nt, u16 forget_time) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ 530 | void pop_queue_process(struct prueth *prueth, spinlock_t *lock) | ^~~~~~~~~~~~~~~~~ drivers/net/ethernet/ti/prueth_lre.c: In function 'prueth_lre_emac_rx_packets': drivers/net/ethernet/ti/prueth_lre.c:645:36: warning: variable 'queue_desc_p' set but not used [-Wunused-but-set-variable] 645 | struct prueth_queue_desc __iomem *queue_desc_p; | ^~~~~~~~~~~~ drivers/net/ethernet/ti/prueth_lre.c:644:43: warning: variable 'status_o' set but not used [-Wunused-but-set-variable] 644 | u8 overflow_cnt, overflow_cnt_o, status, status_o; | ^~~~~~~~ drivers/net/ethernet/ti/prueth_lre.c:644:35: warning: variable 'status' set but not used [-Wunused-but-set-variable] 644 | u8 overflow_cnt, overflow_cnt_o, status, status_o; | ^~~~~~ vim +/pru_spin_lock +120 drivers/net/ethernet/ti/prueth_lre.c 119 121 { 122 while (1) { 123 nt->nt_info->arm_lock = 1; 124 if (!nt->nt_info->fw_lock) 125 break; 126 nt->nt_info->arm_lock = 0; 127 } 128 } 129 130 static inline void pru_spin_unlock(struct node_tbl *nt) 131 { 132 nt->nt_info->arm_lock = 0; 133 } 134 135 int prueth_lre_nt_insert(struct prueth *prueth, 136 u8 *mac, int port, int sv_frame, int proto) 137 { 138 struct nt_queue_t *q = prueth->mac_queue; 139 unsigned long flags; 140 int ret = LRE_OK; 141 142 /* Will encounter a null mac_queue if we are in the middle of 143 * ndo_close. So check and return. Otherwise a kernel crash is 144 * seen when doing ifdown continuously. 145 */ 146 if (!q) 147 return ret; 148 149 spin_lock_irqsave(&prueth->nt_lock, flags); 150 if (q->full) { 151 ret = LRE_ERR; 152 } else { 153 memcpy(q->nt_queue[q->wr_ind].mac, mac, ETH_ALEN); 154 q->nt_queue[q->wr_ind].sv_frame = sv_frame; 155 q->nt_queue[q->wr_ind].port_id = port; 156 q->nt_queue[q->wr_ind].proto = proto; 157 158 q->wr_ind++; 159 q->wr_ind &= (PRUETH_MAC_QUEUE_MAX - 1); 160 if (q->wr_ind == q->rd_ind) 161 q->full = true; 162 } 163 spin_unlock_irqrestore(&prueth->nt_lock, flags); 164 165 return ret; 166 } 167 168 static inline bool node_expired(struct node_tbl *nt, u16 node, u16 forget_time) 169 { 170 struct node_tbl_t nt_node = nt->nt_array->node_tbl[node]; 171 172 return ((nt_node.time_last_seen_s > forget_time || 173 nt_node.status & ICSS_LRE_NT_REM_NODE_TYPE_SANAB) && 174 nt_node.time_last_seen_a > forget_time && 175 nt_node.time_last_seen_b > forget_time); 176 } 177 178 #define IND_BIN_NO(x) nt->index_array->index_tbl[x].bin_no_entries 179 #define IND_BINOFS(x) nt->index_array->index_tbl[x].bin_offset 180 #define BIN_NODEOFS(x) nt->bin_array->bin_tbl[x].node_tbl_offset 181 182 static void _prueth_lre_init_node_table(struct prueth *prueth) 183 { 184 struct nt_queue_t *q = prueth->mac_queue; 185 struct node_tbl *nt = prueth->nt; 186 int j; 187 188 const struct prueth_fw_offsets *fw_offsets = prueth->fw_offsets; 189 190 nt->nt_array = prueth->mem[fw_offsets->nt_array_loc].va + 191 fw_offsets->nt_array_offset; 192 memset_io(nt->nt_array, 0, sizeof(struct node_tbl_t) * 193 fw_offsets->nt_array_max_entries); 194 195 nt->bin_array = prueth->mem[fw_offsets->bin_array_loc].va + 196 fw_offsets->bin_array_offset; 197 memset_io(nt->bin_array, 0, sizeof(struct bin_tbl_t) * 198 fw_offsets->bin_array_max_entries); 199 200 nt->index_array = prueth->mem[fw_offsets->index_array_loc].va + 201 fw_offsets->index_array_offset; 202 memset_io(nt->index_array, 0, sizeof(struct node_index_tbl_t) * 203 fw_offsets->index_array_max_entries); 204 205 nt->nt_info = prueth->mem[fw_offsets->nt_array_loc].va + 206 fw_offsets->nt_array_offset + 207 (sizeof(struct node_tbl_t) * 208 fw_offsets->nt_array_max_entries); 209 memset_io(nt->nt_info, 0, sizeof(struct node_tbl_info_t)); 210 211 nt->nt_lre_cnt = 212 prueth->mem[PRUETH_MEM_SHARED_RAM].va + ICSS_LRE_CNT_NODES; 213 memset_io(nt->nt_lre_cnt, 0, sizeof(struct node_tbl_lre_cnt_t)); 214 215 nt->nt_array_max_entries = fw_offsets->nt_array_max_entries; 216 nt->bin_array_max_entries = fw_offsets->bin_array_max_entries; 217 nt->index_array_max_entries = fw_offsets->index_array_max_entries; 218 nt->hash_mask = fw_offsets->hash_mask; 219 220 for (j = 0; j < fw_offsets->index_array_max_entries; j++) 221 IND_BINOFS(j) = fw_offsets->bin_array_max_entries; 222 for (j = 0; j < fw_offsets->bin_array_max_entries; j++) 223 BIN_NODEOFS(j) = fw_offsets->nt_array_max_entries; 224 for (j = 0; j < fw_offsets->nt_array_max_entries; j++) 225 nt->nt_array->node_tbl[j].entry_state = ICSS_LRE_NODE_FREE; 226 227 q->rd_ind = 0; 228 q->wr_ind = 0; 229 q->full = false; 230 } 231 232 static u16 find_free_bin(struct node_tbl *nt) 233 { 234 u16 j; 235 236 for (j = 0; j < nt->bin_array_max_entries; j++) 237 if (BIN_NODEOFS(j) == nt->nt_array_max_entries) 238 break; 239 240 return j; 241 } 242 243 /* find first free node table slot and write it to the next_free_slot */ 244 static u16 next_free_slot_update(struct node_tbl *nt) 245 { 246 int j; 247 248 nt->nt_info->next_free_slot = nt->nt_array_max_entries; 249 for (j = 0; j < nt->nt_array_max_entries; j++) { 250 if (nt->nt_array->node_tbl[j].entry_state == 251 ICSS_LRE_NODE_FREE) { 252 nt->nt_info->next_free_slot = j; 253 break; 254 } 255 } 256 257 return nt->nt_info->next_free_slot; 258 } 259 260 static void inc_time(u16 *t) 261 { 262 *t += 1; 263 if (*t > ICSS_LRE_MAX_FORGET_TIME) 264 *t = ICSS_LRE_MAX_FORGET_TIME; 265 } 266 268 { 269 int j; 270 u16 ofs; 271 struct nt_array_t *nt_arr = nt->nt_array; 272 struct node_tbl_t *node; 273 274 for (j = 0; j < nt->bin_array_max_entries; j++) { 275 ofs = nt->bin_array->bin_tbl[j].node_tbl_offset; 276 if (ofs < nt->nt_array_max_entries) { 277 node = &nt_arr->node_tbl[ofs]; 278 inc_time(&node->time_last_seen_a); 279 inc_time(&node->time_last_seen_b); 280 /* increment time_last_seen_s if nod is not SAN */ 281 if ((node->status & 282 ICSS_LRE_NT_REM_NODE_TYPE_SANAB) == 0) 283 inc_time(&node->time_last_seen_s); 284 } 285 } 286 } 287 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org