sfc/siena/farch.c

968  * Also "is multicast" and "matches multicast filter" flags can be used to
1056 	/* Detect multicast packets that didn't match the filter */
1892 /* The filter hash function is LFSR polynomial x^16 + x^3 + 1 of a 32-bit
1908 /* To allow for hash collisions, filter search continues at these
1988 		 * enabled in both filter specs.
2078 		 * wildcard filter.  We need to convert from local and remote
2232 /* Build a filter entry and return its n-tuple key. */
2233 static u32 efx_farch_filter_build(efx_oword_t *filter,
2243 			*filter,
2260 			*filter,
2276 		EFX_POPULATE_OWORD_5(*filter,
2308  * Construct/deconstruct external filter IDs.  At least the RX filter
2394 	efx_oword_t filter;
2416 		/* One filter spec per type */
2424 		 * (1) a filter to be replaced (rep_index): any filter
2438 		u32 key = efx_farch_filter_build(&filter, &spec);
2480 	/* If we found a filter to be replaced, check whether we
2500 	/* Insert the filter */
2518 		efx_writeo(efx, &filter,
2521 		/* If we were able to replace a filter by inserting
2522 		 * at a lower depth, clear the replaced filter
2530 		   "%s: filter type %d index %d rxq %u set",
2544 	static efx_oword_t filter;
2553 	efx_writeo(efx, &filter, table->offset + table->step * filter_idx);
2555 	/* If this filter required a greater search depth than
2742 /* Restore filter stater after reset */
2748 	efx_oword_t filter;
2763 			efx_farch_filter_build(&filter, &table->spec[filter_idx]);
2764 			efx_writeo(efx, &filter,
2863 	efx_oword_t filter;
2890 			efx_farch_filter_build(&filter, &table->spec[filter_idx]);
2891 			efx_writeo(efx, &filter,
2928 				/* ARFS table doesn't know of this filter, remove it */
2980 		/* Broadcast packets go through the multicast hash filter.