Commit 94bdb562 authored by Slawomir Laba's avatar Slawomir Laba Committed by Lipeng Sang
Browse files

i40e: Fix flow-type by setting GL_HASH_INSET registers 

stable inclusion
from stable-v5.10.153
commit 6170b4579f36452e3e4ab5d119266053a977c378
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I64YCA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6170b4579f36452e3e4ab5d119266053a977c378



--------------------------------

[ Upstream commit 3b32c993 ]

Fix setting bits for specific flow_type for GLQF_HASH_INSET register.
In previous version all of the bits were set only in hena register, while
in inset only one bit was set. In order for this working correctly on all
types of cards these bits needs to be set correctly for both hena and inset
registers.

Fixes: eb0dd6e4 ("i40e: Allow RSS Hash set with less than four parameters")
Signed-off-by: default avatarSlawomir Laba <slawomirx.laba@intel.com>
Signed-off-by: default avatarMichal Jaron <michalx.jaron@intel.com>
Signed-off-by: default avatarMateusz Palczewski <mateusz.palczewski@intel.com>
Signed-off-by: default avatarJacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20221024100526.1874914-3-jacob.e.keller@intel.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
Signed-off-by: default avatarLipeng Sang <sanglipeng1@jd.com>
parent 9758bd36

drivers/net/ethernet/intel/i40e/i40e_ethtool.c

+38 −33
Original line number Diff line number Diff line
@@ -3463,6 +3463,7 @@ static u64 i40e_get_rss_hash_bits(struct i40e_hw *hw, 
	return i_set;

}



#define FLOW_PCTYPES_SIZE 64

/**

 * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash

 * @pf: pointer to the physical function struct
@@ -3475,9 +3476,11 @@ static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc) 
	struct i40e_hw *hw = &pf->hw;

	u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |

		   ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);

	u8 flow_pctype = 0;

	DECLARE_BITMAP(flow_pctypes, FLOW_PCTYPES_SIZE);

	u64 i_set, i_setc;



	bitmap_zero(flow_pctypes, FLOW_PCTYPES_SIZE);



	if (pf->flags & I40E_FLAG_MFP_ENABLED) {

		dev_err(&pf->pdev->dev,

			"Change of RSS hash input set is not supported when MFP mode is enabled\n");
@@ -3493,36 +3496,35 @@ static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc) 


	switch (nfc->flow_type) {

	case TCP_V4_FLOW:

		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;

		set_bit(I40E_FILTER_PCTYPE_NONF_IPV4_TCP, flow_pctypes);

		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)

			hena |=

			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);

			set_bit(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK,

				flow_pctypes);

		break;

	case TCP_V6_FLOW:

		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;

		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)

			hena |=

			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);

		set_bit(I40E_FILTER_PCTYPE_NONF_IPV6_TCP, flow_pctypes);

		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)

			hena |=

			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);

			set_bit(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK,

				flow_pctypes);

		break;

	case UDP_V4_FLOW:

		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;

		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)

			hena |=

			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |

			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP);



		set_bit(I40E_FILTER_PCTYPE_NONF_IPV4_UDP, flow_pctypes);

		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {

			set_bit(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP,

				flow_pctypes);

			set_bit(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP,

				flow_pctypes);

		}

		hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);

		break;

	case UDP_V6_FLOW:

		flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;

		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)

			hena |=

			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |

			  BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP);



		set_bit(I40E_FILTER_PCTYPE_NONF_IPV6_UDP, flow_pctypes);

		if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {

			set_bit(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP,

				flow_pctypes);

			set_bit(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP,

				flow_pctypes);

		}

		hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);

		break;

	case AH_ESP_V4_FLOW:
@@ -3555,17 +3557,20 @@ static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc) 
		return -EINVAL;

	}



	if (flow_pctype) {

		i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,

					       flow_pctype)) |

			((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,

					       flow_pctype)) << 32);

	if (bitmap_weight(flow_pctypes, FLOW_PCTYPES_SIZE)) {

		u8 flow_id;



		for_each_set_bit(flow_id, flow_pctypes, FLOW_PCTYPES_SIZE) {

			i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_id)) |

				 ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_id)) << 32);

			i_set = i40e_get_rss_hash_bits(&pf->hw, nfc, i_setc);

		i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype),



			i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_id),

					  (u32)i_set);

		i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype),

			i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_id),

					  (u32)(i_set >> 32));

		hena |= BIT_ULL(flow_pctype);

			hena |= BIT_ULL(flow_id);

		}

	}



	i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);