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Message-Id: <20240701154336.3536924-1-peteryin.openbmc@gmail.com>
Date: Mon, 1 Jul 2024 23:43:36 +0800
From: Peter Yin <peteryin.openbmc@...il.com>
To: patrick@...cx.xyz,
amithash@...a.com,
Samuel Mendoza-Jonas <sam@...dozajonas.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: cosmo.chou@...ntatw.com
Subject: [PATCH v1 1/1] net/ncsi: specify maximum package to probe
Most NICs have a single package. For OCP3.0 NICs, the package ID is
determined by the slot ID. Probing all 8 package IDs is usually
unnecessary. To reduce probe time, add properties to specify the
maximum number of packages.
Signed-off-by: Cosmo Chou <cosmo.chou@...ntatw.com>
Signed-off-by: Peter Yin <peteryin.openbmc@...il.com>
---
net/ncsi/internal.h | 1 +
net/ncsi/ncsi-manage.c | 16 ++++++++++++----
2 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h
index ef0f8f73826f..bd7ad0bf803f 100644
--- a/net/ncsi/internal.h
+++ b/net/ncsi/internal.h
@@ -341,6 +341,7 @@ struct ncsi_dev_priv {
#define NCSI_MAX_VLAN_VIDS 15
struct list_head vlan_vids; /* List of active VLAN IDs */
+ unsigned int max_package; /* Num of packages to probe */
bool multi_package; /* Enable multiple packages */
bool mlx_multi_host; /* Enable multi host Mellanox */
u32 package_whitelist; /* Packages to configure */
diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c
index 5ecf611c8820..159943ee1317 100644
--- a/net/ncsi/ncsi-manage.c
+++ b/net/ncsi/ncsi-manage.c
@@ -1358,12 +1358,12 @@ static void ncsi_probe_channel(struct ncsi_dev_priv *ndp)
nd->state = ncsi_dev_state_probe_deselect;
fallthrough;
case ncsi_dev_state_probe_deselect:
- ndp->pending_req_num = 8;
+ ndp->pending_req_num = ndp->max_package;
/* Deselect all possible packages */
nca.type = NCSI_PKT_CMD_DP;
nca.channel = NCSI_RESERVED_CHANNEL;
- for (index = 0; index < 8; index++) {
+ for (index = 0; index < ndp->max_package; index++) {
nca.package = index;
ret = ncsi_xmit_cmd(&nca);
if (ret)
@@ -1491,7 +1491,7 @@ static void ncsi_probe_channel(struct ncsi_dev_priv *ndp)
/* Probe next package */
ndp->package_probe_id++;
- if (ndp->package_probe_id >= 8) {
+ if (ndp->package_probe_id >= ndp->max_package) {
/* Probe finished */
ndp->flags |= NCSI_DEV_PROBED;
break;
@@ -1746,7 +1746,7 @@ struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
struct platform_device *pdev;
struct device_node *np;
unsigned long flags;
- int i;
+ int i, ret;
/* Check if the device has been registered or not */
nd = ncsi_find_dev(dev);
@@ -1795,6 +1795,14 @@ struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
if (np && (of_property_read_bool(np, "mellanox,multi-host") ||
of_property_read_bool(np, "mlx,multi-host")))
ndp->mlx_multi_host = true;
+
+ if (np) {
+ ret = of_property_read_u32(np, "ncsi-package",
+ &ndp->max_package);
+ if (ret || !ndp->max_package ||
+ ndp->max_package > NCSI_MAX_PACKAGE)
+ ndp->max_package = NCSI_MAX_PACKAGE;
+ }
}
return nd;
--
2.25.1
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