diff options
| author | Andre Guedes <andre.guedes@intel.com> | 2020-04-24 23:16:14 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2020-05-23 04:21:51 +0300 |
| commit | b500350a36ae6e83a03931723b787b771f411817 (patch) | |
| tree | ff78765dbb2c79c7a5488bb0cefe0208aed22f97 /drivers/net/ethernet/intel/igc/igc_ethtool.c | |
| parent | d3ba9e6f6157e6fa047d853936dabb981e315080 (diff) | |
| download | linux-b500350a36ae6e83a03931723b787b771f411817.tar.xz | |
igc: Fix locking issue when retrieving NFC rules
Access to NFC rules stored in adapter->nfc_rule_list is protect by
adapter->nfc_rule_lock. The functions igc_ethtool_get_nfc_rule()
and igc_ethtool_get_nfc_rules() are missing to hold the lock while
accessing rule objects.
Signed-off-by: Andre Guedes <andre.guedes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igc/igc_ethtool.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c index 24aa321f64b5..decd29fbfbe2 100644 --- a/drivers/net/ethernet/intel/igc/igc_ethtool.c +++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c @@ -939,16 +939,18 @@ static int igc_ethtool_get_nfc_rule(struct igc_adapter *adapter, cmd->data = IGC_MAX_RXNFC_RULES; + spin_lock(&adapter->nfc_rule_lock); + hlist_for_each_entry(rule, &adapter->nfc_rule_list, nfc_node) { if (fsp->location <= rule->location) break; } if (!rule || fsp->location != rule->location) - return -EINVAL; + goto out; if (!rule->filter.match_flags) - return -EINVAL; + goto out; fsp->flow_type = ETHER_FLOW; fsp->ring_cookie = rule->action; @@ -976,7 +978,12 @@ static int igc_ethtool_get_nfc_rule(struct igc_adapter *adapter, eth_broadcast_addr(fsp->m_u.ether_spec.h_source); } + spin_unlock(&adapter->nfc_rule_lock); return 0; + +out: + spin_unlock(&adapter->nfc_rule_lock); + return -EINVAL; } static int igc_ethtool_get_nfc_rules(struct igc_adapter *adapter, @@ -988,13 +995,19 @@ static int igc_ethtool_get_nfc_rules(struct igc_adapter *adapter, cmd->data = IGC_MAX_RXNFC_RULES; + spin_lock(&adapter->nfc_rule_lock); + hlist_for_each_entry(rule, &adapter->nfc_rule_list, nfc_node) { - if (cnt == cmd->rule_cnt) + if (cnt == cmd->rule_cnt) { + spin_unlock(&adapter->nfc_rule_lock); return -EMSGSIZE; + } rule_locs[cnt] = rule->location; cnt++; } + spin_unlock(&adapter->nfc_rule_lock); + cmd->rule_cnt = cnt; return 0; |