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Message-ID: <20230614114710.31400-1-r-gunasekaran@ti.com>
Date: Wed, 14 Jun 2023 17:17:10 +0530
From: Ravi Gunasekaran <r-gunasekaran@...com>
To: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
<pabeni@...hat.com>, <bigeasy@...utronix.de>,
<simon.horman@...igine.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<rogerq@...nel.org>, <r-gunasekaran@...com>
Subject: [PATCH v2 net-next] net: hsr: Disable promiscuous mode in offload mode
When port-to-port forwarding for interfaces in HSR node is enabled,
disable promiscuous mode since L2 frame forward happens at the
offloaded hardware.
Signed-off-by: Ravi Gunasekaran <r-gunasekaran@...com>
Reviewed-by: Simon Horman <simon.horman@...igine.com>
---
Changes from v1:
===============
* Changed the data type of "fwd_offloaded" from "unsigned int" to "bool"
and moved it below "net_id" struct member as per Paolo's comment.
* Collected Reviewed-by tag from v1 patch.
v1: https://lore.kernel.org/all/20230612093933.13267-1-r-gunasekaran@ti.com/
net/hsr/hsr_device.c | 5 +++++
net/hsr/hsr_main.h | 1 +
net/hsr/hsr_slave.c | 15 +++++++++++----
3 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index 5a236aae2366..306f942c3b28 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -531,6 +531,11 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
if (res)
goto err_add_master;
+ /* HSR forwarding offload supported in lower device? */
+ if ((slave[0]->features & NETIF_F_HW_HSR_FWD) &&
+ (slave[1]->features & NETIF_F_HW_HSR_FWD))
+ hsr->fwd_offloaded = true;
+
res = register_netdevice(hsr_dev);
if (res)
goto err_unregister;
diff --git a/net/hsr/hsr_main.h b/net/hsr/hsr_main.h
index 5584c80a5c79..6851e33df7d1 100644
--- a/net/hsr/hsr_main.h
+++ b/net/hsr/hsr_main.h
@@ -208,6 +208,7 @@ struct hsr_priv {
u8 net_id; /* for PRP, it occupies most significant 3 bits
* of lan_id
*/
+ bool fwd_offloaded; /* Forwarding offloaded to HW */
unsigned char sup_multicast_addr[ETH_ALEN] __aligned(sizeof(u16));
/* Align to u16 boundary to avoid unaligned access
* in ether_addr_equal
diff --git a/net/hsr/hsr_slave.c b/net/hsr/hsr_slave.c
index b70e6bbf6021..e5742f2a2d52 100644
--- a/net/hsr/hsr_slave.c
+++ b/net/hsr/hsr_slave.c
@@ -131,9 +131,14 @@ static int hsr_portdev_setup(struct hsr_priv *hsr, struct net_device *dev,
struct hsr_port *master;
int res;
- res = dev_set_promiscuity(dev, 1);
- if (res)
- return res;
+ /* Don't use promiscuous mode for offload since L2 frame forward
+ * happens at the offloaded hardware.
+ */
+ if (!port->hsr->fwd_offloaded) {
+ res = dev_set_promiscuity(dev, 1);
+ if (res)
+ return res;
+ }
master = hsr_port_get_hsr(hsr, HSR_PT_MASTER);
hsr_dev = master->dev;
@@ -152,7 +157,9 @@ static int hsr_portdev_setup(struct hsr_priv *hsr, struct net_device *dev,
fail_rx_handler:
netdev_upper_dev_unlink(dev, hsr_dev);
fail_upper_dev_link:
- dev_set_promiscuity(dev, -1);
+ if (!port->hsr->fwd_offloaded)
+ dev_set_promiscuity(dev, -1);
+
return res;
}
--
2.17.1
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