[PATCH net-next 0/8][pull request] 40GbE Intel Wired LAN Driver Updates 2021-04-23

[PATCH net-next 0/8][pull request] 40GbE Intel Wired LAN Driver Updates 2021-04-23

[Tony Nguyen]

This series contains updates to i40e and iavf drivers.

Aleksandr adds support for VIRTCHNL_VF_CAP_ADV_LINK_SPEED in i40e which
allows for reporting link speed to VF as a value instead of using an
enum; helper functions are created to remove repeated code.

Coiby Xu reduces memory use of i40e when using kdump by reducing Tx, Rx,
and admin queue to minimum values. Current use causes failure of kdump.

Stefan Assmann removes duplicated free calls in iavf.

Haiyue cleans up a loop to return directly when if the value is found
and changes some magic numbers to defines for better maintainability
in iavf.

The following are changes since commit cad4162a90aeff737a16c0286987f51e927f003a:
  Merge branch 'stmmac-swmac-desc-prefetch'
and are available in the git repository at:
  git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue 40GbE

Aleksandr Loktionov (1):
  i40e: refactor repeated link state reporting code

Coiby Xu (3):
  i40e: use minimal Tx and Rx pairs for kdump
  i40e: use minimal Rx and Tx ring buffers for kdump
  i40e: use minimal admin queue for kdump

Haiyue Wang (3):
  iavf: change the flex-byte support number to macro definition
  iavf: enhance the duplicated FDIR list scan handling
  iavf: redefine the magic number for FDIR GTP-U header fields

Stefan Assmann (1):
  iavf: remove duplicate free resources calls

 drivers/net/ethernet/intel/i40e/i40e.h        |   2 +
 drivers/net/ethernet/intel/i40e/i40e_main.c   |  23 +++-
 .../ethernet/intel/i40e/i40e_virtchnl_pf.c    | 108 +++++++++++-------
 .../net/ethernet/intel/iavf/iavf_ethtool.c    |   2 +-
 drivers/net/ethernet/intel/iavf/iavf_fdir.c   |  24 ++--
 drivers/net/ethernet/intel/iavf/iavf_fdir.h   |   9 +-
 drivers/net/ethernet/intel/iavf/iavf_main.c   |   2 -
 7 files changed, 115 insertions(+), 55 deletions(-)

-- 
2.26.2

[PATCH net-next 1/8] i40e: refactor repeated link state reporting code

[Tony Nguyen]

From: Aleksandr Loktionov <aleksandr.loktionov@intel.com>

Refactor repeated link state reporting code into a separate helper
functions: i40e_set_vf_link_state() i40e_vc_link_speed2mbps().
Add support of VIRTCHNL_VF_CAP_ADV_LINK_SPEED;

Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 .../ethernet/intel/i40e/i40e_virtchnl_pf.c    | 108 +++++++++++-------
 1 file changed, 69 insertions(+), 39 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 5d301a466f5c..eff0a30790dd 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -39,6 +39,66 @@ static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
 	}
 }
 
+/**
+ * i40e_vc_link_speed2mbps
+ * converts i40e_aq_link_speed to integer value of Mbps
+ * @link_speed: the speed to convert
+ *
+ * return the speed as direct value of Mbps.
+ **/
+static u32
+i40e_vc_link_speed2mbps(enum i40e_aq_link_speed link_speed)
+{
+	switch (link_speed) {
+	case I40E_LINK_SPEED_100MB:
+		return SPEED_100;
+	case I40E_LINK_SPEED_1GB:
+		return SPEED_1000;
+	case I40E_LINK_SPEED_2_5GB:
+		return SPEED_2500;
+	case I40E_LINK_SPEED_5GB:
+		return SPEED_5000;
+	case I40E_LINK_SPEED_10GB:
+		return SPEED_10000;
+	case I40E_LINK_SPEED_20GB:
+		return SPEED_20000;
+	case I40E_LINK_SPEED_25GB:
+		return SPEED_25000;
+	case I40E_LINK_SPEED_40GB:
+		return SPEED_40000;
+	case I40E_LINK_SPEED_UNKNOWN:
+		return SPEED_UNKNOWN;
+	}
+	return SPEED_UNKNOWN;
+}
+
+/**
+ * i40e_set_vf_link_state
+ * @vf: pointer to the VF structure
+ * @pfe: pointer to PF event structure
+ * @ls: pointer to link status structure
+ *
+ * set a link state on a single vf
+ **/
+static void i40e_set_vf_link_state(struct i40e_vf *vf,
+				   struct virtchnl_pf_event *pfe, struct i40e_link_status *ls)
+{
+	u8 link_status = ls->link_info & I40E_AQ_LINK_UP;
+
+	if (vf->link_forced)
+		link_status = vf->link_up;
+
+	if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) {
+		pfe->event_data.link_event_adv.link_speed = link_status ?
+			i40e_vc_link_speed2mbps(ls->link_speed) : 0;
+		pfe->event_data.link_event_adv.link_status = link_status;
+	} else {
+		pfe->event_data.link_event.link_speed = link_status ?
+			i40e_virtchnl_link_speed(ls->link_speed) : 0;
+		pfe->event_data.link_event.link_status = link_status;
+	}
+}
+
 /**
  * i40e_vc_notify_vf_link_state
  * @vf: pointer to the VF structure
@@ -55,16 +115,9 @@ static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
 
 	pfe.event = VIRTCHNL_EVENT_LINK_CHANGE;
 	pfe.severity = PF_EVENT_SEVERITY_INFO;
-	if (vf->link_forced) {
-		pfe.event_data.link_event.link_status = vf->link_up;
-		pfe.event_data.link_event.link_speed =
-			(vf->link_up ? i40e_virtchnl_link_speed(ls->link_speed) : 0);
-	} else {
-		pfe.event_data.link_event.link_status =
-			ls->link_info & I40E_AQ_LINK_UP;
-		pfe.event_data.link_event.link_speed =
-			i40e_virtchnl_link_speed(ls->link_speed);
-	}
+
+	i40e_set_vf_link_state(vf, &pfe, ls);
+
 	i40e_aq_send_msg_to_vf(hw, abs_vf_id, VIRTCHNL_OP_EVENT,
 			       0, (u8 *)&pfe, sizeof(pfe), NULL);
 }
@@ -1949,6 +2002,7 @@ static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
 				  VIRTCHNL_VF_OFFLOAD_VLAN;
 
 	vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2;
+	vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED;
 	vsi = pf->vsi[vf->lan_vsi_idx];
 	if (!vsi->info.pvid)
 		vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN;
@@ -3696,26 +3750,8 @@ static int i40e_vc_add_qch_msg(struct i40e_vf *vf, u8 *msg)
 	}
 
 	/* get link speed in MB to validate rate limit */
-	switch (ls->link_speed) {
-	case VIRTCHNL_LINK_SPEED_100MB:
-		speed = SPEED_100;
-		break;
-	case VIRTCHNL_LINK_SPEED_1GB:
-		speed = SPEED_1000;
-		break;
-	case VIRTCHNL_LINK_SPEED_10GB:
-		speed = SPEED_10000;
-		break;
-	case VIRTCHNL_LINK_SPEED_20GB:
-		speed = SPEED_20000;
-		break;
-	case VIRTCHNL_LINK_SPEED_25GB:
-		speed = SPEED_25000;
-		break;
-	case VIRTCHNL_LINK_SPEED_40GB:
-		speed = SPEED_40000;
-		break;
-	default:
+	speed = i40e_vc_link_speed2mbps(ls->link_speed);
+	if (speed == SPEED_UNKNOWN) {
 		dev_err(&pf->pdev->dev,
 			"Cannot detect link speed\n");
 		aq_ret = I40E_ERR_PARAM;
@@ -4464,23 +4500,17 @@ int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
 	switch (link) {
 	case IFLA_VF_LINK_STATE_AUTO:
 		vf->link_forced = false;
-		pfe.event_data.link_event.link_status =
-			pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
-		pfe.event_data.link_event.link_speed =
-			(enum virtchnl_link_speed)
-			pf->hw.phy.link_info.link_speed;
+		i40e_set_vf_link_state(vf, &pfe, ls);
 		break;
 	case IFLA_VF_LINK_STATE_ENABLE:
 		vf->link_forced = true;
 		vf->link_up = true;
-		pfe.event_data.link_event.link_status = true;
-		pfe.event_data.link_event.link_speed = i40e_virtchnl_link_speed(ls->link_speed);
+		i40e_set_vf_link_state(vf, &pfe, ls);
 		break;
 	case IFLA_VF_LINK_STATE_DISABLE:
 		vf->link_forced = true;
 		vf->link_up = false;
-		pfe.event_data.link_event.link_status = false;
-		pfe.event_data.link_event.link_speed = 0;
+		i40e_set_vf_link_state(vf, &pfe, ls);
 		break;
 	default:
 		ret = -EINVAL;
-- 
2.26.2

[PATCH net-next 2/8] i40e: use minimal Tx and Rx pairs for kdump

[Tony Nguyen]

From: Coiby Xu <coxu@redhat.com>

Set the number of the MSI-X vectors to 1. When MSI-X is enabled,
it's not allowed to use more TC queue pairs than MSI-X vectors
(pf->num_lan_msix) exist. Thus the number of Tx and Rx pairs
(vsi->num_queue_pairs) will be equal to the number of MSI-X vectors,
i.e., 1.

Signed-off-by: Coiby Xu <coxu@redhat.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 687ef52a8116..b51b8e25501d 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -6,6 +6,7 @@
 #include <linux/pci.h>
 #include <linux/bpf.h>
 #include <generated/utsrelease.h>
+#include <linux/crash_dump.h>
 
 /* Local includes */
 #include "i40e.h"
@@ -15506,6 +15507,14 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (err)
 		goto err_switch_setup;
 
+	/* Reduce Tx and Rx pairs for kdump
+	 * When MSI-X is enabled, it's not allowed to use more TC queue
+	 * pairs than MSI-X vectors (pf->num_lan_msix) exist. Thus
+	 * vsi->num_queue_pairs will be equal to pf->num_lan_msix, i.e., 1.
+	 */
+	if (is_kdump_kernel())
+		pf->num_lan_msix = 1;
+
 	pf->udp_tunnel_nic.set_port = i40e_udp_tunnel_set_port;
 	pf->udp_tunnel_nic.unset_port = i40e_udp_tunnel_unset_port;
 	pf->udp_tunnel_nic.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
-- 
2.26.2

[PATCH net-next 3/8] i40e: use minimal Rx and Tx ring buffers for kdump

[Tony Nguyen]

From: Coiby Xu <coxu@redhat.com>

Use the minimum of the number of descriptors thus we will allocate the
minimal ring buffers for kdump.

Signed-off-by: Coiby Xu <coxu@redhat.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index b51b8e25501d..2d3dbb3c0e14 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -11040,6 +11040,11 @@ static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
 		return -ENODATA;
 	}
 
+	if (is_kdump_kernel()) {
+		vsi->num_tx_desc = I40E_MIN_NUM_DESCRIPTORS;
+		vsi->num_rx_desc = I40E_MIN_NUM_DESCRIPTORS;
+	}
+
 	return 0;
 }
 
-- 
2.26.2

[PATCH net-next 4/8] i40e: use minimal admin queue for kdump

[Tony Nguyen]

From: Coiby Xu <coxu@redhat.com>

The minimum size of admin send/receive queue is 1 and 2 respectively.
The admin send queue can't be set to 1 because in that case, the
firmware would fail to init.

Signed-off-by: Coiby Xu <coxu@redhat.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/i40e/i40e.h      | 2 ++
 drivers/net/ethernet/intel/i40e/i40e_main.c | 9 +++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h
index 15f93b355099..9067cd3ce243 100644
--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -66,6 +66,8 @@
 #define I40E_FDIR_RING_COUNT		32
 #define I40E_MAX_AQ_BUF_SIZE		4096
 #define I40E_AQ_LEN			256
+#define I40E_MIN_ARQ_LEN		1
+#define I40E_MIN_ASQ_LEN		2
 #define I40E_AQ_WORK_LIMIT		66 /* max number of VFs + a little */
 #define I40E_MAX_USER_PRIORITY		8
 #define I40E_DEFAULT_TRAFFIC_CLASS	BIT(0)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 2d3dbb3c0e14..c2d145a56b5e 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -15348,8 +15348,13 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	i40e_check_recovery_mode(pf);
 
-	hw->aq.num_arq_entries = I40E_AQ_LEN;
-	hw->aq.num_asq_entries = I40E_AQ_LEN;
+	if (is_kdump_kernel()) {
+		hw->aq.num_arq_entries = I40E_MIN_ARQ_LEN;
+		hw->aq.num_asq_entries = I40E_MIN_ASQ_LEN;
+	} else {
+		hw->aq.num_arq_entries = I40E_AQ_LEN;
+		hw->aq.num_asq_entries = I40E_AQ_LEN;
+	}
 	hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
 	hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
 	pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
-- 
2.26.2

[PATCH net-next 5/8] iavf: remove duplicate free resources calls

[Tony Nguyen]

From: Stefan Assmann <sassmann@kpanic.de>

Both iavf_free_all_tx_resources() and iavf_free_all_rx_resources() have
already been called in the very same function.
Remove the duplicate calls.

Signed-off-by: Stefan Assmann <sassmann@kpanic.de>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/iavf/iavf_main.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
index 7a81e7ceea65..e612c24fa384 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -3940,8 +3940,6 @@ static void iavf_remove(struct pci_dev *pdev)
 
 	iounmap(hw->hw_addr);
 	pci_release_regions(pdev);
-	iavf_free_all_tx_resources(adapter);
-	iavf_free_all_rx_resources(adapter);
 	iavf_free_queues(adapter);
 	kfree(adapter->vf_res);
 	spin_lock_bh(&adapter->mac_vlan_list_lock);
-- 
2.26.2

[PATCH net-next 6/8] iavf: change the flex-byte support number to macro definition

[Tony Nguyen]

From: Haiyue Wang <haiyue.wang@intel.com>

The maximum number (2) of flex-byte support is derived from ethtool
use-def data size (8 byte).

Change the magic number 2 to macro definition, and add the comment to
track the design thinking, so the code is clear and easily maintained.

Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/iavf/iavf_ethtool.c | 2 +-
 drivers/net/ethernet/intel/iavf/iavf_fdir.h    | 9 +++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
index 3d904bc6ee76..af43fbd8cb75 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_ethtool.c
@@ -939,7 +939,7 @@ iavf_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
 	if (!(fsp->flow_type & FLOW_EXT))
 		return 0;
 
-	for (i = 0; i < 2; i++) {
+	for (i = 0; i < IAVF_FLEX_WORD_NUM; i++) {
 #define IAVF_USERDEF_FLEX_WORD_M	GENMASK(15, 0)
 #define IAVF_USERDEF_FLEX_OFFS_S	16
 #define IAVF_USERDEF_FLEX_OFFS_M	GENMASK(31, IAVF_USERDEF_FLEX_OFFS_S)
diff --git a/drivers/net/ethernet/intel/iavf/iavf_fdir.h b/drivers/net/ethernet/intel/iavf/iavf_fdir.h
index 2439c970b657..33c55c366315 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_fdir.h
+++ b/drivers/net/ethernet/intel/iavf/iavf_fdir.h
@@ -35,6 +35,11 @@ enum iavf_fdir_flow_type {
 	IAVF_FDIR_FLOW_PTYPE_MAX,
 };
 
+/* Must not exceed the array element number of '__be32 data[2]' in the ethtool
+ * 'struct ethtool_rx_flow_spec.m_ext.data[2]' to express the flex-byte (word).
+ */
+#define IAVF_FLEX_WORD_NUM	2
+
 struct iavf_flex_word {
 	u16 offset;
 	u16 word;
@@ -71,7 +76,7 @@ struct iavf_fdir_ip {
 };
 
 struct iavf_fdir_extra {
-	u32 usr_def[2];
+	u32 usr_def[IAVF_FLEX_WORD_NUM];
 };
 
 /* bookkeeping of Flow Director filters */
@@ -95,7 +100,7 @@ struct iavf_fdir_fltr {
 	/* flex byte filter data */
 	u8 ip_ver; /* used to adjust the flex offset, 4 : IPv4, 6 : IPv6 */
 	u8 flex_cnt;
-	struct iavf_flex_word flex_words[2];
+	struct iavf_flex_word flex_words[IAVF_FLEX_WORD_NUM];
 
 	u32 flow_id;
 
-- 
2.26.2

[PATCH net-next 7/8] iavf: enhance the duplicated FDIR list scan handling

[Tony Nguyen]

From: Haiyue Wang <haiyue.wang@intel.com>

When the FDIR entry is found, just return the result directly to break
the loop.

Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/iavf/iavf_fdir.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_fdir.c b/drivers/net/ethernet/intel/iavf/iavf_fdir.c
index 3e687189d737..af872ea3163f 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_fdir.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_fdir.c
@@ -713,7 +713,6 @@ void iavf_print_fdir_fltr(struct iavf_adapter *adapter, struct iavf_fdir_fltr *f
 bool iavf_fdir_is_dup_fltr(struct iavf_adapter *adapter, struct iavf_fdir_fltr *fltr)
 {
 	struct iavf_fdir_fltr *tmp;
-	bool ret = false;
 
 	list_for_each_entry(tmp, &adapter->fdir_list_head, list) {
 		if (tmp->flow_type != fltr->flow_type)
@@ -724,13 +723,11 @@ bool iavf_fdir_is_dup_fltr(struct iavf_adapter *adapter, struct iavf_fdir_fltr *
 		    !memcmp(&tmp->ip_data, &fltr->ip_data,
 			    sizeof(fltr->ip_data)) &&
 		    !memcmp(&tmp->ext_data, &fltr->ext_data,
-			    sizeof(fltr->ext_data))) {
-			ret = true;
-			break;
-		}
+			    sizeof(fltr->ext_data)))
+			return true;
 	}
 
-	return ret;
+	return false;
 }
 
 /**
-- 
2.26.2

[PATCH net-next 8/8] iavf: redefine the magic number for FDIR GTP-U header fields

[Tony Nguyen]

From: Haiyue Wang <haiyue.wang@intel.com>

The flex-byte for GTP-U protocol header fields uses the magic number,
which is hard to maintain and understand, define the interested fields
with meaningful macro name, based on the GTP-U protocol stack:

GTP-U header
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     | 0x1 |1|0|1|0|0|     0xff      |           Length              |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |                           TEID = 1654                         |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |    Sequence Number = 0        |N-PDU Number=0 |NextExtHdr=0x85|
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

GTP-U Extension Header (PDU Session Container)
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |  ExtHdrLen=2  |Type=0 | Spare |0|0|   QFI     | PPI |  Spare  |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |                    Padding                    |NextExtHdr=0x0 |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/iavf/iavf_fdir.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_fdir.c b/drivers/net/ethernet/intel/iavf/iavf_fdir.c
index af872ea3163f..6146203efd84 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_fdir.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_fdir.c
@@ -54,8 +54,13 @@ iavf_fill_fdir_gtpu_hdr(struct iavf_fdir_fltr *fltr,
 #define IAVF_GTPU_HDR_TEID_OFFS0	4
 #define IAVF_GTPU_HDR_TEID_OFFS1	6
 #define IAVF_GTPU_HDR_N_PDU_AND_NEXT_EXTHDR_OFFS	10
+#define IAVF_GTPU_HDR_NEXT_EXTHDR_TYPE_MASK		0x00FF /* skip N_PDU */
+/* PDU Session Container Extension Header (PSC) */
+#define IAVF_GTPU_PSC_EXTHDR_TYPE			0x85
 #define IAVF_GTPU_HDR_PSC_PDU_TYPE_AND_QFI_OFFS		13
-#define IAVF_GTPU_PSC_EXTHDR_TYPE	0x85 /* PDU Session Container Extension Header */
+#define IAVF_GTPU_HDR_PSC_PDU_QFI_MASK			0x3F /* skip Type */
+#define IAVF_GTPU_EH_QFI_IDX				1
+
 		if (fltr->flex_words[i].offset < adj_offs)
 			return -EINVAL;
 
@@ -71,7 +76,9 @@ iavf_fill_fdir_gtpu_hdr(struct iavf_fdir_fltr *fltr,
 			}
 			break;
 		case IAVF_GTPU_HDR_N_PDU_AND_NEXT_EXTHDR_OFFS:
-			if ((fltr->flex_words[i].word & 0xff) != IAVF_GTPU_PSC_EXTHDR_TYPE)
+			if ((fltr->flex_words[i].word &
+			     IAVF_GTPU_HDR_NEXT_EXTHDR_TYPE_MASK) !=
+						IAVF_GTPU_PSC_EXTHDR_TYPE)
 				return -EOPNOTSUPP;
 			if (!ehdr)
 				ehdr = &proto_hdrs->proto_hdr[proto_hdrs->count++];
@@ -80,7 +87,9 @@ iavf_fill_fdir_gtpu_hdr(struct iavf_fdir_fltr *fltr,
 		case IAVF_GTPU_HDR_PSC_PDU_TYPE_AND_QFI_OFFS:
 			if (!ehdr)
 				return -EINVAL;
-			ehdr->buffer[1] = fltr->flex_words[i].word & 0x3F;
+			ehdr->buffer[IAVF_GTPU_EH_QFI_IDX] =
+					fltr->flex_words[i].word &
+						IAVF_GTPU_HDR_PSC_PDU_QFI_MASK;
 			VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(ehdr, GTPU_EH, QFI);
 			break;
 		default:
-- 
2.26.2

Re: [PATCH net-next 0/8][pull request] 40GbE Intel Wired LAN Driver Updates 2021-04-23

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (refs/heads/master):

On Fri, 23 Apr 2021 09:42:39 -0700 you wrote:
> This series contains updates to i40e and iavf drivers.
> 
> Aleksandr adds support for VIRTCHNL_VF_CAP_ADV_LINK_SPEED in i40e which
> allows for reporting link speed to VF as a value instead of using an
> enum; helper functions are created to remove repeated code.
> 
> Coiby Xu reduces memory use of i40e when using kdump by reducing Tx, Rx,
> and admin queue to minimum values. Current use causes failure of kdump.
> 
> [...]

Here is the summary with links:
  - [net-next,1/8] i40e: refactor repeated link state reporting code
    https://git.kernel.org/netdev/net-next/c/6d2c322cce04
  - [net-next,2/8] i40e: use minimal Tx and Rx pairs for kdump
    https://git.kernel.org/netdev/net-next/c/065aa694a76e
  - [net-next,3/8] i40e: use minimal Rx and Tx ring buffers for kdump
    https://git.kernel.org/netdev/net-next/c/dcb75338f6e7
  - [net-next,4/8] i40e: use minimal admin queue for kdump
    https://git.kernel.org/netdev/net-next/c/5c208e9f498e
  - [net-next,5/8] iavf: remove duplicate free resources calls
    https://git.kernel.org/netdev/net-next/c/1a0e880b028f
  - [net-next,6/8] iavf: change the flex-byte support number to macro definition
    https://git.kernel.org/netdev/net-next/c/f995f95af626
  - [net-next,7/8] iavf: enhance the duplicated FDIR list scan handling
    https://git.kernel.org/netdev/net-next/c/f3b9da31f0e3
  - [net-next,8/8] iavf: redefine the magic number for FDIR GTP-U header fields
    https://git.kernel.org/netdev/net-next/c/1f70dfc542e8

You are awesome, thank you!
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