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Message-ID: <20160229192613.24163.31830.stgit@john-Precision-Tower-5810>
Date: Mon, 29 Feb 2016 11:26:13 -0800
From: John Fastabend <john.fastabend@...il.com>
To: intel-wired-lan@...ts.osuosl.org, john.fastabend@...il.com,
jeffrey.t.kirsher@...el.com
Cc: netdev@...r.kernel.org
Subject: [net-next PATCH] net: relax setup_tc ndo op handle restriction
I added this check in setup_tc to multiple drivers,
if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
Unfortunately restricting to TC_H_ROOT like this breaks the old
instantiation of mqprio to setup a hardware qdisc. This patch
relaxes the test to only check the type to make it equivalent
to the check before I broke it. With this the old instantiation
continues to work.
A good smoke test is to setup mqprio with,
# tc qdisc add dev eth4 root mqprio num_tc 8 \
map 0 1 2 3 4 5 6 7 \
queues 0@0 1@1 2@2 3@3 4@4 5@5 6@6 7@7
Fixes: e4c6734eaab9 ("net: rework ndo tc op to consume additional qdisc handle paramete")
Reported-by: Singh Krishneil <krishneil.k.singh@...el.com>
Reported-by: Jake Keller <jacob.e.keller@...el.com>
CC: Murali Karicheri <m-karicheri2@...com>
CC: Shradha Shah <sshah@...arflare.com>
CC: Or Gerlitz <ogerlitz@...lanox.com>
CC: Ariel Elior <ariel.elior@...gic.com>
CC: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
CC: Bruce Allan <bruce.w.allan@...el.com>
CC: Jesse Brandeburg <jesse.brandeburg@...el.com>
CC: Don Skidmore <donald.c.skidmore@...el.com>
Signed-off-by: John Fastabend <john.r.fastabend@...el.com>
---
drivers/net/ethernet/amd/xgbe/xgbe-drv.c | 2 +-
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 2 +-
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +-
drivers/net/ethernet/intel/fm10k/fm10k_netdev.c | 2 +-
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 2 +-
drivers/net/ethernet/sfc/tx.c | 2 +-
drivers/net/ethernet/ti/netcp_core.c | 2 +-
8 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
index 3360684..ebf9224 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
@@ -1632,7 +1632,7 @@ static int xgbe_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
struct xgbe_prv_data *pdata = netdev_priv(netdev);
u8 tc;
- if (handle != TC_H_ROOT || tc_to_netdev->type != TC_SETUP_MQPRIO)
+ if (tc_to_netdev->type != TC_SETUP_MQPRIO)
return -EINVAL;
tc = tc_to_netdev->tc;
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index 45843d1..a949783 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -4275,7 +4275,7 @@ int bnx2x_setup_tc(struct net_device *dev, u8 num_tc)
int __bnx2x_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
struct tc_to_netdev *tc)
{
- if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
+ if (tc->type != TC_SETUP_MQPRIO)
return -EINVAL;
return bnx2x_setup_tc(dev, tc->tc);
}
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index ff1507f..f1a0a73 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -5383,7 +5383,7 @@ static int bnxt_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
struct bnxt *bp = netdev_priv(dev);
u8 tc;
- if (handle != TC_H_ROOT || ntc->type != TC_SETUP_MQPRIO)
+ if (ntc->type != TC_SETUP_MQPRIO)
return -EINVAL;
tc = ntc->tc;
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
index dc1a821..d09a8dd 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
@@ -1207,7 +1207,7 @@ err_queueing_scheme:
static int __fm10k_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
struct tc_to_netdev *tc)
{
- if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
+ if (tc->type != TC_SETUP_MQPRIO)
return -EINVAL;
return fm10k_setup_tc(dev, tc->tc);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index cf4b729..02139f3 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -8422,7 +8422,7 @@ int __ixgbe_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
}
}
- if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
+ if (tc->type != TC_SETUP_MQPRIO)
return -EINVAL;
return ixgbe_setup_tc(dev, tc->tc);
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 96d95cb..a2d560a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -72,7 +72,7 @@ int mlx4_en_setup_tc(struct net_device *dev, u8 up)
static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
struct tc_to_netdev *tc)
{
- if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
+ if (tc->type != TC_SETUP_MQPRIO)
return -EINVAL;
return mlx4_en_setup_tc(dev, tc->tc);
diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index 2cdb571..2337789 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -571,7 +571,7 @@ int efx_setup_tc(struct net_device *net_dev, u32 handle, __be16 proto,
unsigned tc, num_tc;
int rc;
- if (handle != TC_H_ROOT || ntc->type != TC_SETUP_MQPRIO)
+ if (ntc->type != TC_SETUP_MQPRIO)
return -EINVAL;
num_tc = ntc->tc;
diff --git a/drivers/net/ethernet/ti/netcp_core.c b/drivers/net/ethernet/ti/netcp_core.c
index ed0c30f..1d0942c 100644
--- a/drivers/net/ethernet/ti/netcp_core.c
+++ b/drivers/net/ethernet/ti/netcp_core.c
@@ -1860,7 +1860,7 @@ static int netcp_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
/* setup tc must be called under rtnl lock */
ASSERT_RTNL();
- if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
+ if (tc->type != TC_SETUP_MQPRIO)
return -EINVAL;
/* Sanity-check the number of traffic classes requested */
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