npc_defrag_alloc_free_slots() always passed NPC_MCAM_KEY_X2 into __npc_subbank_alloc(), which must match sb->key_type, so defrag never allocated replacement slots on X4 banks. Pass the subbank key type for bank 0, and only extend the search into bank 1 for X2 (X4 MCAM indices are confined to b0b..b0t). Fixes: 645c6e3c1999 ("octeontx2-af: npc: cn20k: virtual index support") Signed-off-by: Ratheesh Kannoth --- drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.c b/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.c index fe8c4ffcd8f7..5dfdfbabfadd 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.c @@ -3542,15 +3542,18 @@ static int npc_defrag_alloc_free_slots(struct rvu *rvu, alloc_cnt2 = 0; rc = __npc_subbank_alloc(rvu, sb, - NPC_MCAM_KEY_X2, sb->b0b, + f->key_type, sb->b0b, sb->b0t, NPC_MCAM_LOWER_PRIO, false, cnt, save, cnt, true, &alloc_cnt1); - if (alloc_cnt1 < cnt) { + /* X4 entries only occupy bank 0 (b0b..b0t); see npc_subbank_idx_2_mcam_idx(). + * X2 uses both halves of the subbank, so spill into bank 1 if needed. + */ + if (alloc_cnt1 < cnt && f->key_type == NPC_MCAM_KEY_X2) { rc = __npc_subbank_alloc(rvu, sb, - NPC_MCAM_KEY_X2, sb->b1b, + f->key_type, sb->b1b, sb->b1t, NPC_MCAM_LOWER_PRIO, false, cnt - alloc_cnt1, -- 2.43.0