This is a note to let you know that I've just added the patch titled
octeontx2-af: Fix promiscuous mode
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
octeontx2-af-fix-promiscuous-mode.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit cadec6c6f5f90b84a2be1fd2caa5b2d01ec3a6c5
Author: Ratheesh Kannoth <rkannoth@xxxxxxxxxxx>
Date: Thu Jun 8 10:46:25 2023 +0530
octeontx2-af: Fix promiscuous mode
[ Upstream commit c0e489372a294044feea650b38f38c888eff57a4 ]
CN10KB silicon introduced a new exact match feature,
which is used for DMAC filtering. The state of installed
DMAC filters in this exact match table is getting corrupted
when promiscuous mode is toggled. Fix this by not touching
Exact match related config when promiscuous mode is toggled.
Fixes: 2dba9459d2c9 ("octeontx2-af: Wrapper functions for MAC addr add/del/update/reset")
Signed-off-by: Ratheesh Kannoth <rkannoth@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
index 3182adb7b9a80..3b48b635977f6 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c
@@ -1168,10 +1168,8 @@ static u16 __rvu_npc_exact_cmd_rules_cnt_update(struct rvu *rvu, int drop_mcam_i
{
struct npc_exact_table *table;
u16 *cnt, old_cnt;
- bool promisc;
table = rvu->hw->table;
- promisc = table->promisc_mode[drop_mcam_idx];
cnt = &table->cnt_cmd_rules[drop_mcam_idx];
old_cnt = *cnt;
@@ -1183,16 +1181,13 @@ static u16 __rvu_npc_exact_cmd_rules_cnt_update(struct rvu *rvu, int drop_mcam_i
*enable_or_disable_cam = false;
- if (promisc)
- goto done;
-
- /* If all rules are deleted and not already in promisc mode; disable cam */
+ /* If all rules are deleted, disable cam */
if (!*cnt && val < 0) {
*enable_or_disable_cam = true;
goto done;
}
- /* If rule got added and not already in promisc mode; enable cam */
+ /* If rule got added, enable cam */
if (!old_cnt && val > 0) {
*enable_or_disable_cam = true;
goto done;
@@ -1447,7 +1442,6 @@ int rvu_npc_exact_promisc_disable(struct rvu *rvu, u16 pcifunc)
u32 drop_mcam_idx;
bool *promisc;
bool rc;
- u32 cnt;
table = rvu->hw->table;
@@ -1470,17 +1464,8 @@ int rvu_npc_exact_promisc_disable(struct rvu *rvu, u16 pcifunc)
return LMAC_AF_ERR_INVALID_PARAM;
}
*promisc = false;
- cnt = __rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, 0, NULL);
mutex_unlock(&table->lock);
- /* If no dmac filter entries configured, disable drop rule */
- if (!cnt)
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, false);
- else
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, !*promisc);
-
- dev_dbg(rvu->dev, "%s: disabled promisc mode (cgx=%d lmac=%d, cnt=%d)\n",
- __func__, cgx_id, lmac_id, cnt);
return 0;
}
@@ -1498,7 +1483,6 @@ int rvu_npc_exact_promisc_enable(struct rvu *rvu, u16 pcifunc)
u32 drop_mcam_idx;
bool *promisc;
bool rc;
- u32 cnt;
table = rvu->hw->table;
@@ -1521,17 +1505,8 @@ int rvu_npc_exact_promisc_enable(struct rvu *rvu, u16 pcifunc)
return LMAC_AF_ERR_INVALID_PARAM;
}
*promisc = true;
- cnt = __rvu_npc_exact_cmd_rules_cnt_update(rvu, drop_mcam_idx, 0, NULL);
mutex_unlock(&table->lock);
- /* If no dmac filter entries configured, disable drop rule */
- if (!cnt)
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, false);
- else
- rvu_npc_enable_mcam_by_entry_index(rvu, drop_mcam_idx, NIX_INTF_RX, !*promisc);
-
- dev_dbg(rvu->dev, "%s: Enabled promisc mode (cgx=%d lmac=%d cnt=%d)\n",
- __func__, cgx_id, lmac_id, cnt);
return 0;
}
