[dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in multicast

[dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in multicast

[Wei Zhao]

In ixgbe PMD code, all vf ars set with bit IXGBE_VMOLR_ROMPE,
which make vf accept packets that match the MTA table,
if some vf update IXGBE_MTA in function ixgbe_vf_set_multicast,
then all vf will receive packets from these address.
So thhere is need to set VMOLR register bit ROPE onlty after this
vf has been set multicast address. If this bit is when pf host doing
initialization, this vf will receive multicast packets with address
written in MTA table. Align to ixgbe pf kernel 5.3.7 code to fix this
bug.

Fixes: 00e30184daa0 ("ixgbe: add PF support")

Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
---
 drivers/net/ixgbe/ixgbe_pf.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c
index 4b833ff..0f4b96b 100644
--- a/drivers/net/ixgbe/ixgbe_pf.c
+++ b/drivers/net/ixgbe/ixgbe_pf.c
@@ -351,7 +351,7 @@ ixgbe_vf_reset_event(struct rte_eth_dev *dev, uint16_t vf)
 	int rar_entry = hw->mac.num_rar_entries - (vf + 1);
 	uint32_t vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
 
-	vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_ROMPE |
+	vmolr |= (IXGBE_VMOLR_ROPE |
 			IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
 	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
 
@@ -503,6 +503,7 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 	const uint32_t IXGBE_MTA_BIT_MASK = (0x1 << IXGBE_MTA_BIT_SHIFT) - 1;
 	uint32_t reg_val;
 	int i;
+	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
 
 	/* Disable multicast promiscuous first */
 	ixgbe_disable_vf_mc_promisc(dev, vf);
@@ -525,6 +526,9 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 		IXGBE_WRITE_REG(hw, IXGBE_MTA(mta_idx), reg_val);
 	}
 
+	vmolr |= IXGBE_VMOLR_ROMPE;
+	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
+
 	return 0;
 }
 
-- 
2.7.5

Re: [dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in multicast

[Zhang, Qi Z]

Hi Wei

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Wei Zhao
> Sent: Wednesday, January 2, 2019 2:33 PM
> To: dev@dpdk.org
> Cc: stable@dpdk.org; Wu, Jingjing <jingjing.wu@intel.com>; Zhao1, Wei
> <wei.zhao1@intel.com>
> Subject: [dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in multicast

What is MAT means ? 
> 
> In ixgbe PMD code, all vf ars set with bit IXGBE_VMOLR_ROMPE, which make vf
> accept packets that match the MTA table, if some vf update IXGBE_MTA in
> function ixgbe_vf_set_multicast, then all vf will receive packets from these
> address.
> So thhere is need to set VMOLR register bit ROPE onlty after this vf has been
> set multicast address. If this bit is when pf host doing initialization, this vf will
> receive multicast packets with address written in MTA table. Align to ixgbe pf
> kernel 5.3.7 code to fix this bug.

There are some typo in you commit log.

> 
> Fixes: 00e30184daa0 ("ixgbe: add PF support")
> 
> Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
> ---
>  drivers/net/ixgbe/ixgbe_pf.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c index
> 4b833ff..0f4b96b 100644
> --- a/drivers/net/ixgbe/ixgbe_pf.c
> +++ b/drivers/net/ixgbe/ixgbe_pf.c
> @@ -351,7 +351,7 @@ ixgbe_vf_reset_event(struct rte_eth_dev *dev,
> uint16_t vf)
>  	int rar_entry = hw->mac.num_rar_entries - (vf + 1);
>  	uint32_t vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
> 
> -	vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_ROMPE |
> +	vmolr |= (IXGBE_VMOLR_ROPE |
>  			IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
>  	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
> 
> @@ -503,6 +503,7 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev,
> uint32_t vf, uint32_t *msgbuf)
>  	const uint32_t IXGBE_MTA_BIT_MASK = (0x1 << IXGBE_MTA_BIT_SHIFT) -
> 1;
>  	uint32_t reg_val;
>  	int i;
> +	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
> 
>  	/* Disable multicast promiscuous first */
>  	ixgbe_disable_vf_mc_promisc(dev, vf);
> @@ -525,6 +526,9 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev,
> uint32_t vf, uint32_t *msgbuf)
>  		IXGBE_WRITE_REG(hw, IXGBE_MTA(mta_idx), reg_val);
>  	}
> 
> +	vmolr |= IXGBE_VMOLR_ROMPE;
> +	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);


Please correct me if I'm wrong

My understand is MTA table is shared by all VFs (I guess also pf), but what if two VFs both enable multi-cast but with different address filter?
Should we prevent the second one to enable multi-cast if any conflict be detected? Otherwise there still will be unexpected behavior.

> +
>  	return 0;
>  }
> 
> --
> 2.7.5

Re: [dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in multicast

[Zhao1, Wei]

> -----Original Message-----
> From: Zhang, Qi Z
> Sent: Thursday, January 3, 2019 9:47 PM
> To: Zhao1, Wei <wei.zhao1@intel.com>; dev@dpdk.org
> Cc: stable@dpdk.org; Wu, Jingjing <jingjing.wu@intel.com>; Zhao1, Wei
> <wei.zhao1@intel.com>
> Subject: RE: [dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in
> multicast
> 
> Hi Wei
> 
> > -----Original Message-----
> > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Wei Zhao
> > Sent: Wednesday, January 2, 2019 2:33 PM
> > To: dev@dpdk.org
> > Cc: stable@dpdk.org; Wu, Jingjing <jingjing.wu@intel.com>; Zhao1, Wei
> > <wei.zhao1@intel.com>
> > Subject: [dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in
> > multicast
> 
> What is MAT means ?
> >
> > In ixgbe PMD code, all vf ars set with bit IXGBE_VMOLR_ROMPE, which
> > make vf accept packets that match the MTA table, if some vf update
> > IXGBE_MTA in function ixgbe_vf_set_multicast, then all vf will receive
> > packets from these address.
> > So thhere is need to set VMOLR register bit ROPE onlty after this vf
> > has been set multicast address. If this bit is when pf host doing
> > initialization, this vf will receive multicast packets with address
> > written in MTA table. Align to ixgbe pf kernel 5.3.7 code to fix this bug.
> 
> There are some typo in you commit log.

Sorry, v2 will commit.

> 
> >
> > Fixes: 00e30184daa0 ("ixgbe: add PF support")
> >
> > Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
> > ---
> >  drivers/net/ixgbe/ixgbe_pf.c | 6 +++++-
> >  1 file changed, 5 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/ixgbe/ixgbe_pf.c
> > b/drivers/net/ixgbe/ixgbe_pf.c index 4b833ff..0f4b96b 100644
> > --- a/drivers/net/ixgbe/ixgbe_pf.c
> > +++ b/drivers/net/ixgbe/ixgbe_pf.c
> > @@ -351,7 +351,7 @@ ixgbe_vf_reset_event(struct rte_eth_dev *dev,
> > uint16_t vf)
> >  	int rar_entry = hw->mac.num_rar_entries - (vf + 1);
> >  	uint32_t vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
> >
> > -	vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_ROMPE |
> > +	vmolr |= (IXGBE_VMOLR_ROPE |
> >  			IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
> >  	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
> >
> > @@ -503,6 +503,7 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev,
> > uint32_t vf, uint32_t *msgbuf)
> >  	const uint32_t IXGBE_MTA_BIT_MASK = (0x1 <<
> IXGBE_MTA_BIT_SHIFT) -
> > 1;
> >  	uint32_t reg_val;
> >  	int i;
> > +	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
> >
> >  	/* Disable multicast promiscuous first */
> >  	ixgbe_disable_vf_mc_promisc(dev, vf); @@ -525,6 +526,9 @@
> > ixgbe_vf_set_multicast(struct rte_eth_dev *dev, uint32_t vf, uint32_t
> > *msgbuf)
> >  		IXGBE_WRITE_REG(hw, IXGBE_MTA(mta_idx), reg_val);
> >  	}
> >
> > +	vmolr |= IXGBE_VMOLR_ROMPE;
> > +	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
> 
> 
> Please correct me if I'm wrong
> 
> My understand is MTA table is shared by all VFs (I guess also pf), but what if

Yes, vf share it but not pf, it is used in vf pool switch

> two VFs both enable multi-cast but with different address filter?
> Should we prevent the second one to enable multi-cast if any conflict be
> detected? Otherwise there still will be unexpected behavior.

Sorry, I do not known what is the confict.
Because IXGBE_VMOLR is vf specific, that is to say, each vf control itself for enable ROMPE.


> 
> > +
> >  	return 0;
> >  }
> >
> > --
> > 2.7.5

Re: [dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in multicast

[Zhang, Qi Z]

> -----Original Message-----
> From: Zhao1, Wei
> Sent: Friday, January 4, 2019 4:35 PM
> To: Zhang, Qi Z <qi.z.zhang@intel.com>; dev@dpdk.org
> Cc: stable@dpdk.org; Wu, Jingjing <jingjing.wu@intel.com>
> Subject: RE: [dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in multicast
> 
> 
> 
> > -----Original Message-----
> > From: Zhang, Qi Z
> > Sent: Thursday, January 3, 2019 9:47 PM
> > To: Zhao1, Wei <wei.zhao1@intel.com>; dev@dpdk.org
> > Cc: stable@dpdk.org; Wu, Jingjing <jingjing.wu@intel.com>; Zhao1, Wei
> > <wei.zhao1@intel.com>
> > Subject: RE: [dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in
> > multicast
> >
> > Hi Wei
> >
> > > -----Original Message-----
> > > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Wei Zhao
> > > Sent: Wednesday, January 2, 2019 2:33 PM
> > > To: dev@dpdk.org
> > > Cc: stable@dpdk.org; Wu, Jingjing <jingjing.wu@intel.com>; Zhao1,
> > > Wei <wei.zhao1@intel.com>
> > > Subject: [dpdk-dev] [PATCH] net/ixgbe: fix MAT enable for VF in
> > > multicast
> >
> > What is MAT means ?
> > >
> > > In ixgbe PMD code, all vf ars set with bit IXGBE_VMOLR_ROMPE, which
> > > make vf accept packets that match the MTA table, if some vf update
> > > IXGBE_MTA in function ixgbe_vf_set_multicast, then all vf will
> > > receive packets from these address.
> > > So thhere is need to set VMOLR register bit ROPE onlty after this vf
> > > has been set multicast address. If this bit is when pf host doing
> > > initialization, this vf will receive multicast packets with address
> > > written in MTA table. Align to ixgbe pf kernel 5.3.7 code to fix this bug.
> >
> > There are some typo in you commit log.
> 
> Sorry, v2 will commit.
> 
> >
> > >
> > > Fixes: 00e30184daa0 ("ixgbe: add PF support")
> > >
> > > Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
> > > ---
> > >  drivers/net/ixgbe/ixgbe_pf.c | 6 +++++-
> > >  1 file changed, 5 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/net/ixgbe/ixgbe_pf.c
> > > b/drivers/net/ixgbe/ixgbe_pf.c index 4b833ff..0f4b96b 100644
> > > --- a/drivers/net/ixgbe/ixgbe_pf.c
> > > +++ b/drivers/net/ixgbe/ixgbe_pf.c
> > > @@ -351,7 +351,7 @@ ixgbe_vf_reset_event(struct rte_eth_dev *dev,
> > > uint16_t vf)
> > >  	int rar_entry = hw->mac.num_rar_entries - (vf + 1);
> > >  	uint32_t vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
> > >
> > > -	vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_ROMPE |
> > > +	vmolr |= (IXGBE_VMOLR_ROPE |
> > >  			IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
> > >  	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
> > >
> > > @@ -503,6 +503,7 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev,
> > > uint32_t vf, uint32_t *msgbuf)
> > >  	const uint32_t IXGBE_MTA_BIT_MASK = (0x1 <<
> > IXGBE_MTA_BIT_SHIFT) -
> > > 1;
> > >  	uint32_t reg_val;
> > >  	int i;
> > > +	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
> > >
> > >  	/* Disable multicast promiscuous first */
> > >  	ixgbe_disable_vf_mc_promisc(dev, vf); @@ -525,6 +526,9 @@
> > > ixgbe_vf_set_multicast(struct rte_eth_dev *dev, uint32_t vf,
> > > uint32_t
> > > *msgbuf)
> > >  		IXGBE_WRITE_REG(hw, IXGBE_MTA(mta_idx), reg_val);
> > >  	}
> > >
> > > +	vmolr |= IXGBE_VMOLR_ROMPE;
> > > +	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
> >
> >
> > Please correct me if I'm wrong
> >
> > My understand is MTA table is shared by all VFs (I guess also pf), but
> > what if
> 
> Yes, vf share it but not pf, it is used in vf pool switch
> 
> > two VFs both enable multi-cast but with different address filter?
> > Should we prevent the second one to enable multi-cast if any conflict
> > be detected? Otherwise there still will be unexpected behavior.
> 
> Sorry, I do not known what is the confict.
> Because IXGBE_VMOLR is vf specific, that is to say, each vf control itself for
> enable ROMPE.

The conflict what I mean is for example, vf1 set filter for address A while vf2 set filter for address B, then both VFs will receive A and B which is not expected.
But if the only issue for receive unexpected multi-cast packet is just a performance impact then I agree with most of patch, 
one more comment is we may need to reset IXGBE_VMOLR_ROMPE if nb_entries = 0, which is the case to clear all multi-cast filter.

> 
> 
> >
> > > +
> > >  	return 0;
> > >  }
> > >
> > > --
> > > 2.7.5

[dpdk-dev] [PATCH v2] net/ixgbe: fix multicast table enable error for VF

[Wei Zhao]

In ixgbe PMD code, all vf ars set with bit IXGBE_VMOLR_ROMPE,
which make vf accept packets that match the MTA table,
if some vf update IXGBE_MTA in function ixgbe_vf_set_multicast,
then all vf will receive packets from these address.
So thhere is need to set VMOLR register bit ROPE only after this
vf has been set multicast address. If this bit is set when pf host doing
initialization, this vf will receive multicast packets with address
written in MTA table. Align to ixgbe pf kernel 5.3.7 code to fix this
bug.

Fixes: 00e30184daa0 ("ixgbe: add PF support")

Signed-off-by: Wei Zhao <wei.zhao1@intel.com>

---

v2:
change patch name and fix typo in log.
---
 drivers/net/ixgbe/ixgbe_pf.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c
index 4b833ff..0f4b96b 100644
--- a/drivers/net/ixgbe/ixgbe_pf.c
+++ b/drivers/net/ixgbe/ixgbe_pf.c
@@ -351,7 +351,7 @@ ixgbe_vf_reset_event(struct rte_eth_dev *dev, uint16_t vf)
 	int rar_entry = hw->mac.num_rar_entries - (vf + 1);
 	uint32_t vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
 
-	vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_ROMPE |
+	vmolr |= (IXGBE_VMOLR_ROPE |
 			IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
 	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
 
@@ -503,6 +503,7 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 	const uint32_t IXGBE_MTA_BIT_MASK = (0x1 << IXGBE_MTA_BIT_SHIFT) - 1;
 	uint32_t reg_val;
 	int i;
+	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
 
 	/* Disable multicast promiscuous first */
 	ixgbe_disable_vf_mc_promisc(dev, vf);
@@ -525,6 +526,9 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 		IXGBE_WRITE_REG(hw, IXGBE_MTA(mta_idx), reg_val);
 	}
 
+	vmolr |= IXGBE_VMOLR_ROMPE;
+	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
+
 	return 0;
 }
 
-- 
2.7.5

Re: [dpdk-dev] [PATCH v2] net/ixgbe: fix multicast table enable error for VF

[Zhang, Qi Z]

> -----Original Message-----
> From: Zhao1, Wei
> Sent: Friday, January 4, 2019 4:34 PM
> To: dev@dpdk.org
> Cc: stable@dpdk.org; Zhang, Qi Z <qi.z.zhang@intel.com>; Wu, Jingjing
> <jingjing.wu@intel.com>; Zhao1, Wei <wei.zhao1@intel.com>
> Subject: [PATCH v2] net/ixgbe: fix multicast table enable error for VF
> 
> In ixgbe PMD code, all vf ars set with bit IXGBE_VMOLR_ROMPE, which make vf
> accept packets that match the MTA table, if some vf update IXGBE_MTA in
> function ixgbe_vf_set_multicast, then all vf will receive packets from these
> address.
> So thhere is need to set VMOLR register bit ROPE only after this vf has been set

s/thhere/there

> multicast address. If this bit is set when pf host doing initialization, this vf will
> receive multicast packets with address written in MTA table. Align to ixgbe pf
> kernel 5.3.7 code to fix this bug.

Please check my last comment in v1, we need to consider the case to clean all multicast filter.
 
> 
> Fixes: 00e30184daa0 ("ixgbe: add PF support")
> 
> Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
> 
> ---
> 
> v2:
> change patch name and fix typo in log.
> ---
>  drivers/net/ixgbe/ixgbe_pf.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c index
> 4b833ff..0f4b96b 100644
> --- a/drivers/net/ixgbe/ixgbe_pf.c
> +++ b/drivers/net/ixgbe/ixgbe_pf.c
> @@ -351,7 +351,7 @@ ixgbe_vf_reset_event(struct rte_eth_dev *dev,
> uint16_t vf)
>  	int rar_entry = hw->mac.num_rar_entries - (vf + 1);
>  	uint32_t vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
> 
> -	vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_ROMPE |
> +	vmolr |= (IXGBE_VMOLR_ROPE |
>  			IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
>  	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
> 
> @@ -503,6 +503,7 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev,
> uint32_t vf, uint32_t *msgbuf)
>  	const uint32_t IXGBE_MTA_BIT_MASK = (0x1 << IXGBE_MTA_BIT_SHIFT) -
> 1;
>  	uint32_t reg_val;
>  	int i;
> +	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
> 
>  	/* Disable multicast promiscuous first */
>  	ixgbe_disable_vf_mc_promisc(dev, vf);
> @@ -525,6 +526,9 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev,
> uint32_t vf, uint32_t *msgbuf)
>  		IXGBE_WRITE_REG(hw, IXGBE_MTA(mta_idx), reg_val);
>  	}
> 
> +	vmolr |= IXGBE_VMOLR_ROMPE;
> +	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
> +
>  	return 0;
>  }
> 
> --
> 2.7.5

Re: [dpdk-dev] [PATCH v2] net/ixgbe: fix multicast table enable error for VF

[Zhao1, Wei]

Hi，qi

> -----Original Message-----
> From: Zhang, Qi Z
> Sent: Friday, January 4, 2019 8:20 PM
> To: Zhao1, Wei <wei.zhao1@intel.com>; dev@dpdk.org
> Cc: stable@dpdk.org; Wu, Jingjing <jingjing.wu@intel.com>
> Subject: RE: [PATCH v2] net/ixgbe: fix multicast table enable error for VF
> 
> 
> 
> > -----Original Message-----
> > From: Zhao1, Wei
> > Sent: Friday, January 4, 2019 4:34 PM
> > To: dev@dpdk.org
> > Cc: stable@dpdk.org; Zhang, Qi Z <qi.z.zhang@intel.com>; Wu, Jingjing
> > <jingjing.wu@intel.com>; Zhao1, Wei <wei.zhao1@intel.com>
> > Subject: [PATCH v2] net/ixgbe: fix multicast table enable error for VF
> >
> > In ixgbe PMD code, all vf ars set with bit IXGBE_VMOLR_ROMPE, which
> > make vf accept packets that match the MTA table, if some vf update
> > IXGBE_MTA in function ixgbe_vf_set_multicast, then all vf will receive
> > packets from these address.
> > So thhere is need to set VMOLR register bit ROPE only after this vf
> > has been set
> 
> s/thhere/there


Sorry， v3 will commit

> 
> > multicast address. If this bit is set when pf host doing
> > initialization, this vf will receive multicast packets with address
> > written in MTA table. Align to ixgbe pf kernel 5.3.7 code to fix this bug.
> 
> Please check my last comment in v1, we need to consider the case to clean all
> multicast filter.

At first, I think we need to clean MTA when unint device, but after test I find that it has been clear after reset of hw reset, so we  do not need to it manually.
 
> 
> >
> > Fixes: 00e30184daa0 ("ixgbe: add PF support")
> >
> > Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
> >
> > ---
> >
> > v2:
> > change patch name and fix typo in log.
> > ---
> >  drivers/net/ixgbe/ixgbe_pf.c | 6 +++++-
> >  1 file changed, 5 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/ixgbe/ixgbe_pf.c
> > b/drivers/net/ixgbe/ixgbe_pf.c index 4b833ff..0f4b96b 100644
> > --- a/drivers/net/ixgbe/ixgbe_pf.c
> > +++ b/drivers/net/ixgbe/ixgbe_pf.c
> > @@ -351,7 +351,7 @@ ixgbe_vf_reset_event(struct rte_eth_dev *dev,
> > uint16_t vf)
> >  	int rar_entry = hw->mac.num_rar_entries - (vf + 1);
> >  	uint32_t vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
> >
> > -	vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_ROMPE |
> > +	vmolr |= (IXGBE_VMOLR_ROPE |
> >  			IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
> >  	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
> >
> > @@ -503,6 +503,7 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev,
> > uint32_t vf, uint32_t *msgbuf)
> >  	const uint32_t IXGBE_MTA_BIT_MASK = (0x1 <<
> IXGBE_MTA_BIT_SHIFT) -
> > 1;
> >  	uint32_t reg_val;
> >  	int i;
> > +	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
> >
> >  	/* Disable multicast promiscuous first */
> >  	ixgbe_disable_vf_mc_promisc(dev, vf); @@ -525,6 +526,9 @@
> > ixgbe_vf_set_multicast(struct rte_eth_dev *dev, uint32_t vf, uint32_t
> > *msgbuf)
> >  		IXGBE_WRITE_REG(hw, IXGBE_MTA(mta_idx), reg_val);
> >  	}
> >
> > +	vmolr |= IXGBE_VMOLR_ROMPE;
> > +	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
> > +
> >  	return 0;
> >  }
> >
> > --
> > 2.7.5

[dpdk-dev] [PATCH v3] net/ixgbe: fix multicast table enable error for VF

[Wei Zhao]

In ixgbe PMD code, all vf ars set with bit IXGBE_VMOLR_ROMPE,
which make vf accept packets that match the MTA table,
if some vf update IXGBE_MTA in function ixgbe_vf_set_multicast,
then all vf will receive packets from these address.
So there is need to set VMOLR register bit ROPE only after this
vf has been set multicast address. If this bit is set when pf host doing
initialization, this vf will receive multicast packets with address
written in MTA table.And also disable MTA when detect
all zero MAC address configuration from vf.
Align to ixgbe pf kernel 5.3.7 code to fix this bug.

Fixes: 00e30184daa0 ("ixgbe: add PF support")

Signed-off-by: Wei Zhao <wei.zhao1@intel.com>

---

v2:
change patch name and fix typo in log.

v3:
fix typo and disable MTA when detect
all zero MAC address configuration.
---
 drivers/net/ixgbe/ixgbe_pf.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/ixgbe_pf.c b/drivers/net/ixgbe/ixgbe_pf.c
index 4b833ff..392e4a1 100644
--- a/drivers/net/ixgbe/ixgbe_pf.c
+++ b/drivers/net/ixgbe/ixgbe_pf.c
@@ -351,7 +351,7 @@ ixgbe_vf_reset_event(struct rte_eth_dev *dev, uint16_t vf)
 	int rar_entry = hw->mac.num_rar_entries - (vf + 1);
 	uint32_t vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
 
-	vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_ROMPE |
+	vmolr |= (IXGBE_VMOLR_ROPE |
 			IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
 	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
 
@@ -503,6 +503,7 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 	const uint32_t IXGBE_MTA_BIT_MASK = (0x1 << IXGBE_MTA_BIT_SHIFT) - 1;
 	uint32_t reg_val;
 	int i;
+	u32 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(vf));
 
 	/* Disable multicast promiscuous first */
 	ixgbe_disable_vf_mc_promisc(dev, vf);
@@ -516,6 +517,12 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 		vfinfo->vf_mc_hashes[i] = hash_list[i];
 	}
 
+	if (nb_entries == 1 && !vfinfo->vf_mc_hashes[0]) {
+		vmolr &= ~IXGBE_VMOLR_ROMPE;
+		IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
+		return 0;
+	}
+
 	for (i = 0; i < vfinfo->num_vf_mc_hashes; i++) {
 		mta_idx = (vfinfo->vf_mc_hashes[i] >> IXGBE_MTA_BIT_SHIFT)
 				& IXGBE_MTA_INDEX_MASK;
@@ -525,6 +532,9 @@ ixgbe_vf_set_multicast(struct rte_eth_dev *dev, uint32_t vf, uint32_t *msgbuf)
 		IXGBE_WRITE_REG(hw, IXGBE_MTA(mta_idx), reg_val);
 	}
 
+	vmolr |= IXGBE_VMOLR_ROMPE;
+	IXGBE_WRITE_REG(hw, IXGBE_VMOLR(vf), vmolr);
+
 	return 0;
 }
 
-- 
2.7.5