diff options
| author |   Anjali Singhai Jain <anjali.singhai@intel.com> | 2014-02-11 08:24:09 +0000 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2014-03-14 16:29:15 -0700 |
| commit | 43fddb7576fbd543502b01f0c09a3a4171f7e038 (patch) | |
| tree | 99fc953205d04dd8be810fe85b7e4e9b5e34397a /drivers/net/ethernet | |
| parent | i40e: delete netdev after deleting napi and vectors (diff) | |
| download | linux-dev-43fddb7576fbd543502b01f0c09a3a4171f7e038.tar.xz linux-dev-43fddb7576fbd543502b01f0c09a3a4171f7e038.zip | |
i40e: Fix a bug in the update logic for FDIR SB filter.
The update filter logic was causing a kernel panic in the original code.
We need to compare the input set to decide whether or not to delete a
filter since we do not have a hash stored. This new design helps fix the issue.
Change-ID: I2462b108e58ca4833312804cda730b4660cc18c9
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>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index d34ff31fddd8..718a3e0f7de4 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -1357,6 +1357,24 @@ static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc) } /** + * i40e_match_fdir_input_set - Match a new filter against an existing one + * @rule: The filter already added + * @input: The new filter to comapre against + * + * Returns true if the two input set match + **/ +static bool i40e_match_fdir_input_set(struct i40e_fdir_filter *rule, + struct i40e_fdir_filter *input) +{ + if ((rule->dst_ip[0] != input->dst_ip[0]) || + (rule->src_ip[0] != input->src_ip[0]) || + (rule->dst_port != input->dst_port) || + (rule->src_port != input->src_port)) + return false; + return true; +} + +/** * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry * @vsi: Pointer to the targeted VSI * @input: The filter to update or NULL to indicate deletion @@ -1391,11 +1409,10 @@ static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi, /* if there is an old rule occupying our place remove it */ if (rule && (rule->fd_id == sw_idx)) { - if (!input || (rule->fd_id != input->fd_id)) { - cmd->fs.flow_type = rule->flow_type; - err = i40e_add_del_fdir_ethtool(vsi, cmd, false); - } - + if (input && !i40e_match_fdir_input_set(rule, input)) + err = i40e_add_del_fdir(vsi, rule, false); + else if (!input) + err = i40e_add_del_fdir(vsi, rule, false); hlist_del(&rule->fdir_node); kfree(rule); pf->fdir_pf_active_filters--; |