net/ipa/ipa_table.c

28  * DOC: IPA Filter and Route Tables
35  * Separate tables (both filter and route) are used for IPv4 and IPv6.  There
36  * is normally another set of "hashed" filter and route tables, which are
41  * an object (such as a route or filter table) in IPA-resident memory must
42  * 128-byte aligned.  An object in system memory (such as a route or filter
44  * route or filter rules in system memory.
49  * filter or route table rules.
96  * The set of available route rules is divided about equally between the AP
97  * and modem.  The AP initializes all entries in a route table to refer to
99  * updating their own entries.  All entries in a route table are usable,
102  *                    IPA Route Table
104  * 1st modem route | 0x0001234500001100 | DMA address for first route rule
106  * 2nd modem route | 0x0001234500001140 | DMA address for second route rule
110  * Last modem route| 0x0001234500002280 | DMA address for Nth route rule
112  * 1st AP route    | 0x0001234500001100 | DMA address for route rule (N+1)
114  * 2nd AP route    | 0x0001234500001140 | DMA address for next route rule
118  * Last AP route   | 0x0001234500002280 | DMA address for last route rule
122 /* Filter or route rules consist of a set of 32-bit values followed by a
131 	/* Filter and route tables contain DMA addresses that refer  in ipa_table_validate_build()
132 	 * to filter or route rules.  But the size of a table entry  in ipa_table_validate_build()
302 			"no transaction for %s route reset\n",  in ipa_route_reset()
336 	/* Report errors, but reset filter and route tables */  in ipa_table_reset()
344 		dev_err(dev, "error %d resetting route table for %s\n",  in ipa_table_reset()
421 		/* The size of a route table region determines the number  in ipa_table_init_add()
459 	 *     - One for route table initialization (non-hashed and hashed)  in ipa_table_setup()
464 	 *     - One for route table initialization (non-hashed and hashed)  in ipa_table_setup()
491  * the filter hash values without changing route ones.
548  * ipa_route_tuple_zero() - Zero a hashed route table entry tuple
550  * @route_id:	Route table entry whose hash tuple should be zeroed
552  * Updates the route hash values without changing filter ones.
566 		/* Zero all route-related fields, preserving the rest */  in ipa_route_tuple_zero()
573 		/* Zero all route-related fields */  in ipa_route_tuple_zero()
580 /* Configure a hashed route table; there is no ipa_route_deconfig() */
593 /* Configure a filter and route tables; there is no ipa_table_deconfig() */
684  * route table data.  This is used when initializing or resetting the IPA
685  * filter or route table.
695  * Each entry in a route table is the DMA address of a routing rule.  For
697  * when a route table is initialized or reset, its entries are made to refer
698  * to the zero rule.  The zero rule is shared for route and filter tables.
708  *	|    |-------------------|   >	or IPA route count,
727 	/* The IPA hardware requires route and filter table rules to be  in ipa_table_init()