sfc/falcon/farch.c

975  * Also "is multicast" and "matches multicast filter" flags can be used to
1063 	/* Detect multicast packets that didn't match the filter */
1822 /* The filter hash function is LFSR polynomial x^16 + x^3 + 1 of a 32-bit
1838 /* To allow for hash collisions, filter search continues at these
1918 		 * enabled in both filter specs.
2009 		 * wildcard filter.  We need to convert from local and remote
2163 /* Build a filter entry and return its n-tuple key. */
2164 static u32 ef4_farch_filter_build(ef4_oword_t *filter,
2174 			*filter,
2191 			*filter,
2207 		EF4_POPULATE_OWORD_5(*filter,
2239  * Construct/deconstruct external filter IDs.  At least the RX filter
2325 	ef4_oword_t filter;
2343 		/* One filter spec per type */
2353 		 * (1) a filter to be replaced (rep_index): any filter
2367 		u32 key = ef4_farch_filter_build(&filter, &spec);
2411 	/* If we found a filter to be replaced, check whether we
2431 	/* Insert the filter */
2449 		ef4_writeo(efx, &filter,
2452 		/* If we were able to replace a filter by inserting
2453 		 * at a lower depth, clear the replaced filter
2461 		   "%s: filter type %d index %d rxq %u set",
2475 	static ef4_oword_t filter;
2484 	ef4_writeo(efx, &filter, table->offset + table->step * filter_idx);
2486 	/* If this filter required a greater search depth than
2675 /* Restore filter stater after reset */
2681 	ef4_oword_t filter;
2696 			ef4_farch_filter_build(&filter, &table->spec[filter_idx]);
2697 			ef4_writeo(efx, &filter,
2781 	ef4_oword_t filter;
2808 			ef4_farch_filter_build(&filter, &table->spec[filter_idx]);
2809 			ef4_writeo(efx, &filter,
2873 		/* Broadcast packets go through the multicast hash filter.