From: Jakub Kicinski <kuba@kernel.org>
To: Ratheesh Kannoth <rkannoth@marvell.com>
Cc: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<sgoutham@marvell.com>, <davem@davemloft.net>,
<edumazet@google.com>, <pabeni@redhat.com>,
<andrew+netdev@lunn.ch>
Subject: Re: [PATCH net-next v3 09/13] octeontx2-af: npc: cn20k: virtual index support
Date: Sat, 10 Jan 2026 14:52:52 -0800 [thread overview]
Message-ID: <20260110145252.3ecf939f@kernel.org> (raw)
In-Reply-To: <20260109054828.1822307-10-rkannoth@marvell.com>
On Fri, 9 Jan 2026 11:18:24 +0530 Ratheesh Kannoth wrote:
> This patch adds support for virtual MCAM index allocation and
> improves CN20K MCAM defragmentation handling. A new field is
> introduced in the non-ref, non-contiguous MCAM allocation mailbox
> request to indicate that virtual indexes should be returned instead
> of physical ones. Virtual indexes allow the hardware to move mapped
> MCAM entries internally, enabling defragmentation and preventing
> scattered allocations across subbanks. The patch also enhances
> defragmentation by treating non-ref, non-contiguous allocations as
> ideal candidates for packing sparsely used regions, which can free
> up subbanks for potential x2 or x4 configuration. All such
> allocations are tracked and always returned as virtual indexes so
> they remain stable even when entries are moved during defrag.
> During defragmentation, MCAM entries may shift between subbanks,
> but their virtual indexes remain unchanged. Additionally, this
> update fixes an issue where entry statistics were not being
> restored correctly after defragmentation.
Warning: drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h:203 struct member 'xa_idx2vidx_map' not described in 'npc_priv_t'
Warning: drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h:203 struct member 'xa_vidx2idx_map' not described in 'npc_priv_t'
Warning: drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h:203 struct member 'defrag_lh' not described in 'npc_priv_t'
Warning: drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h:203 struct member 'lock' not described in 'npc_priv_t'
Warning: drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h:203 struct member 'xa_idx2vidx_map' not described in 'npc_priv_t'
Warning: drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h:203 struct member 'xa_vidx2idx_map' not described in 'npc_priv_t'
Warning: drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h:203 struct member 'defrag_lh' not described in 'npc_priv_t'
Warning: drivers/net/ethernet/marvell/octeontx2/af/cn20k/npc.h:203 struct member 'lock' not described in 'npc_priv_t'
next prev parent reply other threads:[~2026-01-10 22:52 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-09 5:48 [PATCH net-next v3 00/13] NPC HW block support for cn20k Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 01/13] octeontx2-af: npc: cn20k: Index management Ratheesh Kannoth
2026-01-10 22:51 ` Jakub Kicinski
2026-01-13 10:08 ` Ratheesh Kannoth
2026-01-10 22:58 ` Jakub Kicinski
2026-01-13 10:29 ` Ratheesh Kannoth
2026-01-13 15:07 ` Jakub Kicinski
2026-01-14 5:52 ` Ratheesh Kannoth
2026-01-15 3:14 ` Jakub Kicinski
2026-01-10 22:59 ` [net-next,v3,01/13] " Jakub Kicinski
2026-01-13 10:08 ` Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 02/13] octeontx2-af: npc: cn20k: KPM profile changes Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 03/13] octeontx2-af: npc: cn20k: Add default profile Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 04/13] ocetontx2-af: npc: cn20k: MKEX profile support Ratheesh Kannoth
2026-01-10 22:59 ` [net-next,v3,04/13] " Jakub Kicinski
2026-01-13 10:02 ` Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 05/13] octeontx2-af: npc: cn20k: Allocate default MCAM indexes Ratheesh Kannoth
2026-01-10 22:52 ` Jakub Kicinski
2026-01-13 9:58 ` Ratheesh Kannoth
2026-01-10 22:59 ` [net-next,v3,05/13] " Jakub Kicinski
2026-01-13 9:56 ` Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 06/13] octeontx2-af: npc: cn20k: Use common APIs Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 07/13] octeontx2-af: npc: cn20k: Prepare for new SoC Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 08/13] octeontx2-af: npc: cn20k: Add new mailboxes for CN20K silicon Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 09/13] octeontx2-af: npc: cn20k: virtual index support Ratheesh Kannoth
2026-01-10 22:52 ` Jakub Kicinski [this message]
2026-01-13 10:09 ` Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 10/13] octeontx2-af: npc: cn20k: Allocate MCAM entry for flow installation Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 11/13] octeontx2-pf: cn20k: Add TC rules support Ratheesh Kannoth
2026-01-10 22:59 ` [net-next,v3,11/13] " Jakub Kicinski
2026-01-13 9:54 ` Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 12/13] octeontx2-af: npc: cn20k: add debugfs support Ratheesh Kannoth
2026-01-09 5:48 ` [PATCH net-next v3 13/13] octeontx2-af: npc: Use common structures Ratheesh Kannoth
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