From: Jakub Kicinski <kuba@kernel•org>
To: Mina Almasry <almasrymina@google•com>
Cc: davem@davemloft•net, netdev@vger•kernel.org, edumazet@google•com,
pabeni@redhat•com, andrew+netdev@lunn•ch, horms@kernel•org,
donald.hunter@gmail•com, sdf@fomichev•me, dw@davidwei•uk,
asml.silence@gmail•com, ap420073@gmail•com, jdamato@fastly•com,
dtatulea@nvidia•com, michael.chan@broadcom•com
Subject: Re: [RFC net-next 06/22] eth: bnxt: read the page size from the adapter struct
Date: Fri, 25 Apr 2025 15:51:59 -0700 [thread overview]
Message-ID: <20250425155159.1c82f280@kernel.org> (raw)
In-Reply-To: <CAHS8izPze3g7qdTGJ7xd9LeipVyx5cNTKisLDaT6FOTj=X_VzQ@mail.gmail.com>
On Wed, 23 Apr 2025 13:35:00 -0700 Mina Almasry wrote:
> On Mon, Apr 21, 2025 at 3:28 PM Jakub Kicinski <kuba@kernel•org> wrote:
> >
> > Switch from using a constant to storing the BNXT_RX_PAGE_SIZE
> > inside struct bnxt. This will allow configuring the page size
> > at runtime in subsequent patches.
> >
> > The MSS size calculation for older chip continues to use the constant.
> > I'm intending to support the configuration only on more recent HW,
> > looks like on older chips setting this per queue won't work,
> > and that's the ultimate goal.
> >
> > This patch should not change the current behavior as value
> > read from the struct will always be BNXT_RX_PAGE_SIZE at this stage.
> >
> > Signed-off-by: Jakub Kicinski <kuba@kernel•org>
> > ---
> > drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 +
> > drivers/net/ethernet/broadcom/bnxt/bnxt.c | 27 ++++++++++---------
> > drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 4 +--
> > 3 files changed, 17 insertions(+), 15 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
> > index 868a2e5a5b02..158b8f96f50c 100644
> > --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
> > +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
> > @@ -2358,6 +2358,7 @@ struct bnxt {
> > u16 max_tpa;
> > u32 rx_buf_size;
> > u32 rx_buf_use_size; /* useable size */
> > + u16 rx_page_size;
> I think you want a hunk that sets:
>
> rx_page_size = BNXT_RX_PAGE_SIZE;
>
> In this patch? I could not find it, I don't know if I missed it. I
> know in latery patches you're going to set this variable differently,
> but for bisects and what not you may want to retain the current
> behavior.
Hm, it's here, last chunk for drivers/net/ethernet/broadcom/bnxt/bnxt.c:
@@ -16486,6 +16486,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
bp = netdev_priv(dev);
bp->board_idx = ent->driver_data;
bp->msg_enable = BNXT_DEF_MSG_ENABLE;
+ bp->rx_page_size = BNXT_RX_PAGE_SIZE;
bnxt_set_max_func_irqs(bp, max_irqs);
if (bnxt_vf_pciid(bp->board_idx))
next prev parent reply other threads:[~2025-04-25 22:52 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-21 22:28 [RFC net-next 00/22] net: per-queue rx-buf-len configuration Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 01/22] docs: ethtool: document that rx_buf_len must control payload lengths Jakub Kicinski
2025-04-22 16:19 ` David Wei
2025-04-22 19:48 ` Joe Damato
2025-04-23 20:08 ` Mina Almasry
2025-04-25 22:50 ` Jakub Kicinski
2025-04-25 23:20 ` Joe Damato
2025-04-21 22:28 ` [RFC net-next 02/22] net: ethtool: report max value for rx-buf-len Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 03/22] net: use zero value to restore rx_buf_len to default Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 04/22] net: clarify the meaning of netdev_config members Jakub Kicinski
2025-04-22 19:57 ` Joe Damato
2025-04-21 22:28 ` [RFC net-next 05/22] net: add rx_buf_len to netdev config Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 06/22] eth: bnxt: read the page size from the adapter struct Jakub Kicinski
2025-04-23 20:35 ` Mina Almasry
2025-04-25 22:51 ` Jakub Kicinski [this message]
2025-04-21 22:28 ` [RFC net-next 07/22] eth: bnxt: set page pool page order based on rx_page_size Jakub Kicinski
2025-04-22 15:32 ` Stanislav Fomichev
2025-04-22 15:52 ` Jakub Kicinski
2025-04-22 17:27 ` Stanislav Fomichev
2025-04-21 22:28 ` [RFC net-next 08/22] eth: bnxt: support setting size of agg buffers via ethtool Jakub Kicinski
2025-04-23 21:00 ` Mina Almasry
2025-04-25 22:58 ` Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 09/22] net: move netdev_config manipulation to dedicated helpers Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 10/22] net: reduce indent of struct netdev_queue_mgmt_ops members Jakub Kicinski
2025-04-23 21:04 ` Mina Almasry
2025-04-21 22:28 ` [RFC net-next 11/22] net: allocate per-queue config structs and pass them thru the queue API Jakub Kicinski
2025-04-23 21:17 ` Mina Almasry
2025-04-25 23:24 ` Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 12/22] net: pass extack to netdev_rx_queue_restart() Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 13/22] net: add queue config validation callback Jakub Kicinski
2025-04-22 15:49 ` Stanislav Fomichev
2025-04-22 20:16 ` Joe Damato
2025-04-21 22:28 ` [RFC net-next 14/22] eth: bnxt: always set the queue mgmt ops Jakub Kicinski
2025-04-22 15:50 ` Stanislav Fomichev
2025-04-22 20:18 ` Joe Damato
2025-04-21 22:28 ` [RFC net-next 15/22] eth: bnxt: store the rx buf size per queue Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 16/22] eth: bnxt: adjust the fill level of agg queues with larger buffers Jakub Kicinski
2025-04-22 16:13 ` Stanislav Fomichev
2025-04-21 22:28 ` [RFC net-next 17/22] netdev: add support for setting rx-buf-len per queue Jakub Kicinski
2025-04-22 16:15 ` Stanislav Fomichev
2025-04-25 23:41 ` Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 18/22] net: wipe the setting of deactived queues Jakub Kicinski
2025-04-22 16:21 ` Stanislav Fomichev
2025-04-25 23:42 ` Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 19/22] eth: bnxt: use queue op config validate Jakub Kicinski
2025-04-23 10:00 ` Dragos Tatulea
2025-04-23 13:46 ` Jakub Kicinski
2025-04-23 14:24 ` Dragos Tatulea
2025-04-23 15:33 ` Jakub Kicinski
2025-06-12 11:56 ` Dragos Tatulea
2025-06-12 14:10 ` Jakub Kicinski
2025-06-12 15:52 ` Dragos Tatulea
2025-06-12 22:30 ` Jakub Kicinski
2025-06-13 19:02 ` Dragos Tatulea
2025-06-13 23:16 ` Jakub Kicinski
2025-06-17 12:36 ` Dragos Tatulea
2025-04-21 22:28 ` [RFC net-next 20/22] eth: bnxt: support per queue configuration of rx-buf-len Jakub Kicinski
2025-04-21 22:28 ` [RFC net-next 21/22] selftests: drv-net: add helper/wrapper for bpftrace Jakub Kicinski
2025-04-22 16:36 ` Stanislav Fomichev
2025-04-22 16:39 ` Stanislav Fomichev
2025-06-25 12:23 ` Breno Leitao
2025-04-21 22:28 ` [RFC net-next 22/22] selftests: drv-net: add test for rx-buf-len Jakub Kicinski
2025-04-22 17:06 ` Stanislav Fomichev
2025-04-25 23:52 ` Jakub Kicinski
2025-04-23 20:02 ` [RFC net-next 00/22] net: per-queue rx-buf-len configuration Mina Almasry
2025-04-25 23:55 ` Jakub Kicinski
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