From: Ratheesh Kannoth <rkannoth@marvell.com>
To: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <sgoutham@marvell.com>, <davem@davemloft.net>,
<edumazet@google.com>, <kuba@kernel.org>, <pabeni@redhat.com>,
<andrew+netdev@lunn.ch>, <dan.carpenter@linaro.org>,
Ratheesh Kannoth <rkannoth@marvell.com>
Subject: [PATCH v2 net 0/11] octeontx2-af: npc: cn20k: MCAM fixes
Date: Mon, 20 Apr 2026 08:04:31 +0530 [thread overview]
Message-ID: <20260420023442.3295891-1-rkannoth@marvell.com> (raw)
This series tightens Marvell OcteonTX2 AF NPC support for CN20K
silicon around MCAM key typing, optional debugfs setup, defrag
allocation rollback, x2 versus x4 KEX profiles and default-rule
allocation, logical MCAM clear and configuration, default-rule index
bookkeeping and explicit teardown, and NIXLF reserved-slot lookup when
default rules are missing.
Patches 1 through 3 focus on AF error handling: propagate
npc_mcam_idx_2_key_type() failures through cn20k MCAM enable, config,
copy, and read paths; treat cn20k NPC debugfs files as optional so
probe does not fail when debugfs is unavailable; and fix defrag MCAM
allocation rollback so allocation errno is not overwritten by subbank
index resolution.
Patches 4 and 5 align default-rule and flow-install behaviour with the
loaded mkex profile: prefer x4 default entries when the profile is x4,
and reject x4 flow keys when the profile is strictly x2.
Patches 6 through 8 refine cn20k MCAM programming: clear entries by
logical index and resolved key width, fix bank and CFG sequencing in
npc_cn20k_config_mcam_entry(), and read action metadata from the
correct bank in npc_cn20k_read_mcam_entry().
Patches 9 through 11 complete default-rule lifecycle handling:
initialize all default-rule index outputs up front, tear down default
MCAM rules explicitly (coordinated with npc_mcam_free_all_entries()),
and reject USHRT_MAX sentinel indices in npc_get_nixlf_mcam_index()
for cn20k.
Ratheesh Kannoth (11):
octeontx2-af: npc: cn20k: Propagate MCAM key-type errors on cn20k
octeontx2-af: npc: cn20k: Drop debugfs_create_file() error checks in
init
octeontx2-af: npc: cn20k: Propagate errors in defrag MCAM alloc
rollback
octeontx2-af: npc: cn20k: Make default entries as x4.
octeontx2-af: npc: cn20k: Reject request for x4 entries in x2
profile.
octeontx2-af: npc: cn20k: Clear MCAM entries by index and key width
octeontx2-af: npc: cn20k: Fix bank value.
octeontx2-af: npc: cn20k: Fix MCAM actions read
octeontx2-af: npc: cn20k: Initialize default-rule index outputs up
front
octeontx2-af: npc: cn20k: Tear down default MCAM rules explicitly on
free
octeontx2-af: npc: cn20k: Reject missing default-rule MCAM indices
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
--
v1 -> v2: Addressed simon comments. Added more patch fixes to this series.
https://lore.kernel.org/netdev/20260418162013.GG280379@horms.kernel.org/
2.43.0
next reply other threads:[~2026-04-20 2:35 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-20 2:34 Ratheesh Kannoth [this message]
2026-04-20 2:34 ` [PATCH v2 net 01/11] octeontx2-af: npc: cn20k: Propagate MCAM key-type errors on cn20k Ratheesh Kannoth
2026-04-20 2:34 ` [PATCH v2 net 02/11] octeontx2-af: npc: cn20k: Drop debugfs_create_file() error checks in init Ratheesh Kannoth
2026-04-20 2:34 ` [PATCH v2 net 03/11] octeontx2-af: npc: cn20k: Propagate errors in defrag MCAM alloc rollback Ratheesh Kannoth
2026-04-20 2:34 ` [PATCH v2 net 04/11] octeontx2-af: npc: cn20k: Make default entries as x4 Ratheesh Kannoth
2026-04-20 2:34 ` [PATCH v2 net 05/11] octeontx2-af: npc: cn20k: Reject request for x4 entries in x2 profile Ratheesh Kannoth
2026-04-20 2:34 ` [PATCH v2 net 06/11] octeontx2-af: npc: cn20k: Clear MCAM entries by index and key width Ratheesh Kannoth
2026-04-20 2:34 ` [PATCH v2 net 07/11] octeontx2-af: npc: cn20k: Fix bank value Ratheesh Kannoth
2026-04-20 2:34 ` [PATCH v2 net 08/11] octeontx2-af: npc: cn20k: Fix MCAM actions read Ratheesh Kannoth
2026-04-20 2:34 ` [PATCH v2 net 09/11] octeontx2-af: npc: cn20k: Initialize default-rule index outputs up front Ratheesh Kannoth
2026-04-20 2:34 ` [PATCH v2 net 10/11] octeontx2-af: npc: cn20k: Tear down default MCAM rules explicitly on free Ratheesh Kannoth
2026-04-20 2:34 ` [PATCH v2 net 11/11] octeontx2-af: npc: cn20k: Reject missing default-rule MCAM indices Ratheesh Kannoth
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