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i40e: Add code to handle FD table full condition

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Add code to enforce the following policy:
- If the HW reports filter programming error, we check if it's due to a
  full table.
- If so, we go ahead and turn off new rule addition for ATR and then SB
  in that order.
- We monitor the programmed filter count, if enough room is created due
  to filter deletion/reset, we then re-enable SB and ATR new rule addition.

Change-ID: I69d24b29e5c45bc4fa861258e11c2fa7b8868748
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Anjali Singhai Jain
2014-02-12 06:33:25 +00:00
committed by Jeff Kirsher
parent 61dade7e92
commit 55a5e60b9f
5 changed files with 135 additions and 17 deletions
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7
drivers/net/ethernet/intel/i40e/i40e.h
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@@ -152,7 +152,10 @@ struct i40e_lump_tracking {
};
#define I40E_DEFAULT_ATR_SAMPLE_RATE 20
#define I40E_FDIR_MAX_RAW_PACKET_SIZE 512
#define I40E_FDIR_MAX_RAW_PACKET_SIZE 512
#define I40E_FDIR_BUFFER_FULL_MARGIN 10
#define I40E_FDIR_BUFFER_HEAD_ROOM 200
struct i40e_fdir_filter {
struct hlist_node fdir_node;
/* filter ipnut set */
@@ -553,6 +556,8 @@ int i40e_program_fdir_filter(struct i40e_fdir_filter *fdir_data, u8 *raw_packet,
struct i40e_pf *pf, bool add);
int i40e_add_del_fdir(struct i40e_vsi *vsi,
struct i40e_fdir_filter *input, bool add);
void i40e_fdir_check_and_reenable(struct i40e_pf *pf);
int i40e_get_current_fd_count(struct i40e_pf *pf);
void i40e_set_ethtool_ops(struct net_device *netdev);
struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
u8 *macaddr, s16 vlan,