47  * 32 zero bits.  A special "zero entry" rule consisting of 64 zero bits
63  * The AP initializes all entries in a filter table to refer to a "zero"
85  * a "zero entry".  Once initialized, the modem and AP are responsible for
116  * 32-bit all-zero rule list terminator.  The "zero rule" is simply an
117  * all-zero rule followed by the list terminator.
133 	/* A "zero rule" is used to represent no filtering or no routing.  in ipa_table_validate_build()
167 	/* Hashed table regions can be zero size if hashing is not supported */  in ipa_table_valid_one()
224 /* Zero entry count means no table, so just return a 0 address */
234 	/* Skip over the zero rule and possibly the filter mask */  in ipa_table_addr()
264  * modem to refer to the zero entry.  The memory region supplied will be
438 		 * table is either the same as the non-hashed one, or zero.  in ipa_table_init_add()
460 	/* Zero the unused space in the filter table */  in ipa_table_init_add()
468 	/* Zero the unused space in the hashed filter table */  in ipa_table_init_add()
483 	 *     - One to zero unused entries in the non-hashed filter table  in ipa_table_setup()
484 	 *     - One to zero unused entries in the hashed filter table  in ipa_table_setup()
488 	 *     - One to zero unused entries in the non-hashed filter table  in ipa_table_setup()
489 	 *     - One to zero unused entries in the hashed filter table  in ipa_table_setup()
516  * ipa_filter_tuple_zero() - Zero an endpoint's hashed filter tuple
535 	/* Zero all filter-related fields, preserving the rest */  in ipa_filter_tuple_zero()
569  * ipa_route_tuple_zero() - Zero a hashed route table entry tuple
586 	/* Zero all route-related fields, preserving the rest */  in ipa_route_tuple_zero()
623  * address of a filter rule.  A "zero rule" indicates no filtering, and
625  * reset) its entries are made to refer to the zero rule.
628  * routing there is also a 64-bit "zero rule" that means no routing, and
630  * to the zero rule.  The zero rule is shared for route and filter tables.
634  * has a minimum alignment, and we place the zero rule at the base of that
639  *	 --> |     zero rule     |
643  *	| ---- zero rule address | \
645  *	| ---- zero rule address |  |	IPA_FILTER_COUNT_MAX
649  *	  ---- zero rule address | /
664 	 * aligned on a 128-byte boundary.  We put the "zero rule" at the  in ipa_table_init()
677 	/* First slot is the zero rule */  in ipa_table_init()
687 	/* All the rest contain the DMA address of the zero rule */  in ipa_table_init()