47 lines · c
1// SPDX-License-Identifier: GPL-2.0+2#include "sparx5_main.h"3 4void sparx5_pgid_init(struct sparx5 *spx5)5{6 int i;7 8 for (i = 0; i < PGID_TABLE_SIZE; i++)9 spx5->pgid_map[i] = SPX5_PGID_FREE;10 11 /* Reserved for unicast, flood control, broadcast, and CPU.12 * These cannot be freed.13 */14 for (i = 0; i <= PGID_CPU; i++)15 spx5->pgid_map[i] = SPX5_PGID_RESERVED;16}17 18int sparx5_pgid_alloc_mcast(struct sparx5 *spx5, u16 *idx)19{20 int i;21 22 /* The multicast area starts at index 65, but the first 723 * are reserved for flood masks and CPU. Start alloc after that.24 */25 for (i = PGID_MCAST_START; i < PGID_TABLE_SIZE; i++) {26 if (spx5->pgid_map[i] == SPX5_PGID_FREE) {27 spx5->pgid_map[i] = SPX5_PGID_MULTICAST;28 *idx = i;29 return 0;30 }31 }32 33 return -EBUSY;34}35 36int sparx5_pgid_free(struct sparx5 *spx5, u16 idx)37{38 if (idx <= PGID_CPU || idx >= PGID_TABLE_SIZE)39 return -EINVAL;40 41 if (spx5->pgid_map[idx] == SPX5_PGID_FREE)42 return -EINVAL;43 44 spx5->pgid_map[idx] = SPX5_PGID_FREE;45 return 0;46}47