From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neftin, Sasha Date: Wed, 1 Apr 2020 08:44:57 +0300 Subject: [Intel-wired-lan] [PATCH 08/12] igc: Remove IGC_MAC_STATE_QUEUE_STEERING In-Reply-To: <20200318230102.36952-9-andre.guedes@intel.com> References: <20200318230102.36952-1-andre.guedes@intel.com> <20200318230102.36952-9-andre.guedes@intel.com> Message-ID: <42aff8f7-4ee8-e753-10b3-8783105b0abe@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: On 3/19/2020 01:00, Andre Guedes wrote: > The IGC_MAC_STATE_QUEUE_STEERING bit in mac_table[i].state is > utilized to indicate that frames matching the filter are assigned to > mac_table[i].queue. This bit is not strictly necessary since we can > convey the same information as follows: queue == -1 means queue > assignment is disabled, otherwise it is enabled. > > In addition to make the code simpler, this change fixes some awkward > situations where we pass a complete misleading 'queue' value such as in > igc_uc_sync(). > > So this patch removes IGC_MAC_STATE_QUEUE_STEERING and also takes the > opportunity to improve the igc_add_mac_filter documentation. > > Signed-off-by: Andre Guedes > --- > drivers/net/ethernet/intel/igc/igc.h | 3 +- > drivers/net/ethernet/intel/igc/igc_main.c | 34 +++++++++++++---------- > 2 files changed, 21 insertions(+), 16 deletions(-) > > diff --git a/drivers/net/ethernet/intel/igc/igc.h b/drivers/net/ethernet/intel/igc/igc.h > index e743f92a27c6..192cef07bdf7 100644 > --- a/drivers/net/ethernet/intel/igc/igc.h > +++ b/drivers/net/ethernet/intel/igc/igc.h > @@ -470,14 +470,13 @@ struct igc_nfc_filter { > > struct igc_mac_addr { > u8 addr[ETH_ALEN]; > - u8 queue; > + s8 queue; > u8 state; /* bitmask */ > }; > > #define IGC_MAC_STATE_DEFAULT 0x1 > #define IGC_MAC_STATE_IN_USE 0x2 > #define IGC_MAC_STATE_SRC_ADDR 0x4 > -#define IGC_MAC_STATE_QUEUE_STEERING 0x8 > > #define IGC_MAX_RXNFC_FILTERS 16 > > diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c > index 8a3cae2367d4..273817252823 100644 > --- a/drivers/net/ethernet/intel/igc/igc_main.c > +++ b/drivers/net/ethernet/intel/igc/igc_main.c > @@ -820,8 +820,9 @@ static void igc_set_default_mac_filter(struct igc_adapter *adapter) > > ether_addr_copy(mac_table->addr, adapter->hw.mac.addr); > mac_table->state = IGC_MAC_STATE_DEFAULT | IGC_MAC_STATE_IN_USE; > + mac_table->queue = -1; > > - igc_set_mac_filter_hw(adapter, 0, mac_table->addr, -1); > + igc_set_mac_filter_hw(adapter, 0, mac_table->addr, mac_table->queue); > } > > /** > @@ -2197,13 +2198,20 @@ static bool igc_mac_entry_can_be_used(const struct igc_mac_addr *entry, > return true; > } > > -/* Add a MAC filter for 'addr' directing matching traffic to 'queue', > - * 'flags' is used to indicate what kind of match is made, match is by > - * default for the destination address, if matching by source address > - * is desired the flag IGC_MAC_STATE_SRC_ADDR can be used. > - */ Please, add /** before declaration (as we discussed in prev patches review) > +/* Add MAC address filter to adapter. > + * > + * @adapter: Pointer to adapter where the filter should be added. > + * @addr: MAC address. > + * @queue: If non-negative, queue assignment feature is enabled and frames > + * matching the filter are enqueued onto 'queue'. Otherwise, queue assignment > + * is disabled. > + * @flags: Set IGC_MAC_STATE_SRC_ADDR bit to indicate @address is a source > + * address. > + * > + * In case of success, returns 0. Otherwise, it returns a negative errno code. > + */ > static int igc_add_mac_filter(struct igc_adapter *adapter, const u8 *addr, > - const u8 queue, const u8 flags) > + const s8 queue, const u8 flags) > { > struct igc_hw *hw = &adapter->hw; > int rar_entries = hw->mac.rar_entry_count; > @@ -2267,11 +2275,11 @@ static int igc_del_mac_filter(struct igc_adapter *adapter, const u8 *addr, > if (adapter->mac_table[i].state & IGC_MAC_STATE_DEFAULT) { > adapter->mac_table[i].state = > IGC_MAC_STATE_DEFAULT | IGC_MAC_STATE_IN_USE; > - adapter->mac_table[i].queue = 0; > + adapter->mac_table[i].queue = -1; > igc_set_mac_filter_hw(adapter, 0, addr, -1); > } else { > adapter->mac_table[i].state = 0; > - adapter->mac_table[i].queue = 0; > + adapter->mac_table[i].queue = -1; > memset(adapter->mac_table[i].addr, 0, ETH_ALEN); > igc_clear_mac_filter_hw(adapter, i); > } > @@ -2286,7 +2294,7 @@ static int igc_uc_sync(struct net_device *netdev, const unsigned char *addr) > { > struct igc_adapter *adapter = netdev_priv(netdev); > > - return igc_add_mac_filter(adapter, addr, adapter->num_rx_queues, 0); > + return igc_add_mac_filter(adapter, addr, -1, 0); > } > > static int igc_uc_unsync(struct net_device *netdev, const unsigned char *addr) > @@ -3731,15 +3739,13 @@ igc_features_check(struct sk_buff *skb, struct net_device *dev, > int igc_add_mac_steering_filter(struct igc_adapter *adapter, > const u8 *addr, u8 queue, u8 flags) > { > - return igc_add_mac_filter(adapter, addr, queue, > - IGC_MAC_STATE_QUEUE_STEERING | flags); > + return igc_add_mac_filter(adapter, addr, queue, flags); > } > > int igc_del_mac_steering_filter(struct igc_adapter *adapter, > const u8 *addr, u8 queue, u8 flags) > { > - return igc_del_mac_filter(adapter, addr, > - IGC_MAC_STATE_QUEUE_STEERING | flags); > + return igc_del_mac_filter(adapter, addr, flags); > } > > static void igc_tsync_interrupt(struct igc_adapter *adapter) >