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octeontx2-af: fix CN20K default MCAM rule removal on port cleanup

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npc_mcam_free_all_entries() disables every MCAM entry mapped to a
port before freeing it.  On CN20K, that also disables the default
broadcast, multicast, promiscuous, and unicast rules, which causes
packet drops when all rules are removed per port.

Only disable and free non-default entries.  Leave CN20K default rules
enabled when freeing the remaining port entries.

Fixes: 013717353c ("octeontx2-af: npc: cn20k: Tear down default MCAM rules explicitly on free")
Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kiran Kumar K 2026-08-25 10:47:25 +05:30 committed by David S. Miller
parent a8455260b2
commit 1376afc766
1 changed files with 2 additions and 3 deletions
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5
drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
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@ -2957,10 +2957,9 @@ static void npc_mcam_free_all_entries(struct rvu *rvu, struct npc_mcam *mcam,
}
}
/* Disable the entry */
npc_enable_mcam_entry(rvu, mcam, blkaddr, index, false);
if (!cn20k_dft_rl) {
/* Disable the entry */
npc_enable_mcam_entry(rvu, mcam, blkaddr, index, false);
mcam->entry2pfvf_map[index] = NPC_MCAM_INVALID_MAP;
/* Free the entry in bitmap */
npc_mcam_clear_bit(mcam, index);