net/can/gw.c

89 		struct canfd_frame xor;
95 		u8 xor;
103 		struct cgw_csum_xor xor;
107 		void (*xor)(struct canfd_frame *cf,
108 			    struct cgw_csum_xor *xor);
164 MODFUNC(mod_xor_id, cf->can_id ^= mod->modframe.xor.can_id)
165 MODFUNC(mod_xor_len, cf->len ^= mod->modframe.xor.len)
166 MODFUNC(mod_xor_flags, cf->flags ^= mod->modframe.xor.flags)
167 MODFUNC(mod_xor_data, *(u64 *)cf->data ^= *(u64 *)mod->modframe.xor.data)
194 		*(u64 *)(cf->data + i) ^= *(u64 *)(mod->modframe.xor.data + i);
320 static void cgw_csum_xor_rel(struct canfd_frame *cf, struct cgw_csum_xor *xor)
322 	int from = calc_idx(xor->from_idx, cf->len);
323 	int to = calc_idx(xor->to_idx, cf->len);
324 	int res = calc_idx(xor->result_idx, cf->len);
325 	u8 val = xor->init_xor_val;
342 static void cgw_csum_xor_pos(struct canfd_frame *cf, struct cgw_csum_xor *xor)
344 	u8 val = xor->init_xor_val;
347 	for (i = xor->from_idx; i <= xor->to_idx; i++)
350 	cf->data[xor->result_idx] = val;
353 static void cgw_csum_xor_neg(struct canfd_frame *cf, struct cgw_csum_xor *xor)
355 	u8 val = xor->init_xor_val;
358 	for (i = xor->from_idx; i >= xor->to_idx; i--)
361 	cf->data[xor->result_idx] = val;
552 		if (gwj->mod.csumfunc.xor)
553 			(*gwj->mod.csumfunc.xor)(cf, &gwj->mod.csum.xor);
670 		if (gwj->mod.modtype.xor) {
671 			memcpy(&mb.cf, &gwj->mod.modframe.xor, sizeof(mb.cf));
672 			mb.modtype = gwj->mod.modtype.xor;
700 		if (gwj->mod.modtype.xor) {
701 			memcpy(&mb.cf, &gwj->mod.modframe.xor, sizeof(mb.cf));
702 			mb.modtype = gwj->mod.modtype.xor;
726 	if (gwj->mod.csumfunc.xor) {
728 			    &gwj->mod.csum.xor) < 0)
868 			canfdframecpy(&mod->modframe.xor, &mb.cf);
869 			mod->modtype.xor = mb.modtype;
940 			canframecpy(&mod->modframe.xor, &mb.cf);
941 			mod->modtype.xor = mb.modtype;
1003 			nla_memcpy(&mod->csum.xor, tb[CGW_CS_XOR],
1011 				mod->csumfunc.xor = cgw_csum_xor_rel;
1013 				mod->csumfunc.xor = cgw_csum_xor_pos;
1015 				mod->csumfunc.xor = cgw_csum_xor_neg;