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iavf: refactor VLAN filter states
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[ Upstream commit 0c0da0e ]

The VLAN filter states are currently being saved as individual bits.
This is error prone as multiple bits might be mistakenly set.

Fix by replacing the bits with a single state enum. Also, add an
"ACTIVE" state for filters that are accepted by the PF.

Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Stable-dep-of: 9c85b7f ("iavf: remove active_cvlans and active_svlans bitmaps")
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@azaki1
azaki1 authored and Sasha Levin committed Apr 18, 2023
1 parent 28a8135 commit b905919
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Showing 3 changed files with 28 additions and 26 deletions.
15 changes: 9 additions & 6 deletions drivers/net/ethernet/intel/iavf/iavf.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -157,15 +157,18 @@ struct iavf_vlan {
u16 tpid;
};

enum iavf_vlan_state_t {
IAVF_VLAN_INVALID,
IAVF_VLAN_ADD, /* filter needs to be added */
IAVF_VLAN_IS_NEW, /* filter is new, wait for PF answer */
IAVF_VLAN_ACTIVE, /* filter is accepted by PF */
IAVF_VLAN_REMOVE, /* filter needs to be removed */
};

struct iavf_vlan_filter {
struct list_head list;
struct iavf_vlan vlan;
struct {
u8 is_new_vlan:1; /* filter is new, wait for PF answer */
u8 remove:1; /* filter needs to be removed */
u8 add:1; /* filter needs to be added */
u8 padding:5;
};
enum iavf_vlan_state_t state;
};

#define IAVF_MAX_TRAFFIC_CLASS 4
Expand Down
8 changes: 4 additions & 4 deletions drivers/net/ethernet/intel/iavf/iavf_main.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -791,7 +791,7 @@ iavf_vlan_filter *iavf_add_vlan(struct iavf_adapter *adapter,
f->vlan = vlan;

list_add_tail(&f->list, &adapter->vlan_filter_list);
f->add = true;
f->state = IAVF_VLAN_ADD;
adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER;
}

Expand All @@ -813,7 +813,7 @@ static void iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan)

f = iavf_find_vlan(adapter, vlan);
if (f) {
f->remove = true;
f->state = IAVF_VLAN_REMOVE;
adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER;
}

Expand Down Expand Up @@ -1296,11 +1296,11 @@ static void iavf_clear_mac_vlan_filters(struct iavf_adapter *adapter)
/* remove all VLAN filters */
list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list,
list) {
if (vlf->add) {
if (vlf->state == IAVF_VLAN_ADD) {
list_del(&vlf->list);
kfree(vlf);
} else {
vlf->remove = true;
vlf->state = IAVF_VLAN_REMOVE;
}
}
spin_unlock_bh(&adapter->mac_vlan_list_lock);
Expand Down
31 changes: 15 additions & 16 deletions drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -642,7 +642,7 @@ static void iavf_vlan_add_reject(struct iavf_adapter *adapter)

spin_lock_bh(&adapter->mac_vlan_list_lock);
list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
if (f->is_new_vlan) {
if (f->state == IAVF_VLAN_IS_NEW) {
if (f->vlan.tpid == ETH_P_8021Q)
clear_bit(f->vlan.vid,
adapter->vsi.active_cvlans);
Expand Down Expand Up @@ -679,7 +679,7 @@ void iavf_add_vlans(struct iavf_adapter *adapter)
spin_lock_bh(&adapter->mac_vlan_list_lock);

list_for_each_entry(f, &adapter->vlan_filter_list, list) {
if (f->add)
if (f->state == IAVF_VLAN_ADD)
count++;
}
if (!count || !VLAN_FILTERING_ALLOWED(adapter)) {
Expand Down Expand Up @@ -710,11 +710,10 @@ void iavf_add_vlans(struct iavf_adapter *adapter)
vvfl->vsi_id = adapter->vsi_res->vsi_id;
vvfl->num_elements = count;
list_for_each_entry(f, &adapter->vlan_filter_list, list) {
if (f->add) {
if (f->state == IAVF_VLAN_ADD) {
vvfl->vlan_id[i] = f->vlan.vid;
i++;
f->add = false;
f->is_new_vlan = true;
f->state = IAVF_VLAN_IS_NEW;
if (i == count)
break;
}
Expand Down Expand Up @@ -760,7 +759,7 @@ void iavf_add_vlans(struct iavf_adapter *adapter)
vvfl_v2->vport_id = adapter->vsi_res->vsi_id;
vvfl_v2->num_elements = count;
list_for_each_entry(f, &adapter->vlan_filter_list, list) {
if (f->add) {
if (f->state == IAVF_VLAN_ADD) {
struct virtchnl_vlan_supported_caps *filtering_support =
&adapter->vlan_v2_caps.filtering.filtering_support;
struct virtchnl_vlan *vlan;
Expand All @@ -778,8 +777,7 @@ void iavf_add_vlans(struct iavf_adapter *adapter)
vlan->tpid = f->vlan.tpid;

i++;
f->add = false;
f->is_new_vlan = true;
f->state = IAVF_VLAN_IS_NEW;
}
}

Expand Down Expand Up @@ -822,10 +820,11 @@ void iavf_del_vlans(struct iavf_adapter *adapter)
* filters marked for removal to enable bailing out before
* sending a virtchnl message
*/
if (f->remove && !VLAN_FILTERING_ALLOWED(adapter)) {
if (f->state == IAVF_VLAN_REMOVE &&
!VLAN_FILTERING_ALLOWED(adapter)) {
list_del(&f->list);
kfree(f);
} else if (f->remove) {
} else if (f->state == IAVF_VLAN_REMOVE) {
count++;
}
}
Expand Down Expand Up @@ -857,7 +856,7 @@ void iavf_del_vlans(struct iavf_adapter *adapter)
vvfl->vsi_id = adapter->vsi_res->vsi_id;
vvfl->num_elements = count;
list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
if (f->remove) {
if (f->state == IAVF_VLAN_REMOVE) {
vvfl->vlan_id[i] = f->vlan.vid;
i++;
list_del(&f->list);
Expand Down Expand Up @@ -901,7 +900,7 @@ void iavf_del_vlans(struct iavf_adapter *adapter)
vvfl_v2->vport_id = adapter->vsi_res->vsi_id;
vvfl_v2->num_elements = count;
list_for_each_entry_safe(f, ftmp, &adapter->vlan_filter_list, list) {
if (f->remove) {
if (f->state == IAVF_VLAN_REMOVE) {
struct virtchnl_vlan_supported_caps *filtering_support =
&adapter->vlan_v2_caps.filtering.filtering_support;
struct virtchnl_vlan *vlan;
Expand Down Expand Up @@ -2192,7 +2191,7 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter,
list_for_each_entry(vlf,
&adapter->vlan_filter_list,
list)
vlf->add = true;
vlf->state = IAVF_VLAN_ADD;

adapter->aq_required |=
IAVF_FLAG_AQ_ADD_VLAN_FILTER;
Expand Down Expand Up @@ -2260,7 +2259,7 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter,
list_for_each_entry(vlf,
&adapter->vlan_filter_list,
list)
vlf->add = true;
vlf->state = IAVF_VLAN_ADD;

aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER;
}
Expand Down Expand Up @@ -2444,8 +2443,8 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter,

spin_lock_bh(&adapter->mac_vlan_list_lock);
list_for_each_entry(f, &adapter->vlan_filter_list, list) {
if (f->is_new_vlan) {
f->is_new_vlan = false;
if (f->state == IAVF_VLAN_IS_NEW) {
f->state = IAVF_VLAN_ACTIVE;
if (f->vlan.tpid == ETH_P_8021Q)
set_bit(f->vlan.vid,
adapter->vsi.active_cvlans);
Expand Down

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