[Linuxarm] Re: [RFCv2 PATCH net-next 050/167] net: hsr: use netdev feature helpers

Review-by: Jie Wang wangjie125@huawei.com

On 2021/9/22 22:57, Jian Shen wrote:

Use netdev_feature_xxx helpers to replace the logical operation for netdev features.

Signed-off-by: Jian Shen shenjian15@huawei.com

net/hsr/hsr_device.c | 21 ++++++++++++--------- net/hsr/hsr_forward.c | 11 +++++++---- net/hsr/hsr_framereg.c | 3 ++- net/hsr/hsr_slave.c | 3 ++- 4 files changed, 23 insertions(+), 15 deletions(-)

diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c index 7e6dd372711f..b7ba16bdb8e0 100644 --- a/net/hsr/hsr_device.c +++ b/net/hsr/hsr_device.c @@ -183,7 +183,7 @@ static void hsr_features_recompute(struct hsr_priv *hsr, netdev_features_t mask; struct hsr_port *port;

• mask = *features;

• netdev_feature_copy(&mask, *features);

  /* Mask out all features that, if supported by one device, should be

  • enabled for all devices (see NETIF_F_ONE_FOR_ALL).

@@ -192,7 +192,7 @@ static void hsr_features_recompute(struct hsr_priv *hsr, * that were in features originally, and also is in NETIF_F_ONE_FOR_ALL, * may become enabled. */

• *features &= ~NETIF_F_ONE_FOR_ALL;

• netdev_feature_clear_bits(NETIF_F_ONE_FOR_ALL, features); hsr_for_each_port(hsr, port) netdev_increment_features(features, *features, port->dev->features, mask);

@@ -445,22 +445,25 @@ void hsr_dev_setup(struct net_device *dev)

dev->needs_free_netdev = true;

• dev->hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA |

• 	   NETIF_F_GSO_MASK | NETIF_F_HW_CSUM |
  

• 	   NETIF_F_HW_VLAN_CTAG_TX;
  

• netdev_feature_zero(&dev->hw_features);
• netdev_feature_set_bits(NETIF_F_SG | NETIF_F_FRAGLIST |

• 		NETIF_F_HIGHDMA |
  

• 		NETIF_F_GSO_MASK | NETIF_F_HW_CSUM |
  

• 		NETIF_F_HW_VLAN_CTAG_TX, &dev->hw_features);
  
  

• dev->features = dev->hw_features;

• netdev_feature_copy(&dev->features, dev->hw_features);

  /* Prevent recursive tx locking */

• dev->features |= NETIF_F_LLTX;

• netdev_feature_set_bit(NETIF_F_LLTX_BIT, &dev->features);
• /* VLAN on top of HSR needs testing and probably some work on
  • hsr_header_create() etc.
  */

• dev->features |= NETIF_F_VLAN_CHALLENGED;

• netdev_feature_set_bit(NETIF_F_VLAN_CHALLENGED_BIT, &dev->features); /* Not sure about this. Taken from bridge code. netdev_features.h says
  • it means "Does not change network namespaces".
  */

• dev->features |= NETIF_F_NETNS_LOCAL;

• netdev_feature_set_bit(NETIF_F_NETNS_LOCAL_BIT, &dev->features);

}

/* Return true if dev is a HSR master; return false otherwise. diff --git a/net/hsr/hsr_forward.c b/net/hsr/hsr_forward.c index ceb8afb2a62f..6b3aa5f93be0 100644 --- a/net/hsr/hsr_forward.c +++ b/net/hsr/hsr_forward.c @@ -249,7 +249,8 @@ struct sk_buff *hsr_create_tagged_frame(struct hsr_frame_info *frame, /* set the lane id properly */ hsr_set_path_id(hsr_ethhdr, port); return skb_clone(frame->skb_hsr, GFP_ATOMIC);

• } else if (port->dev->features & NETIF_F_HW_HSR_TAG_INS) {

• } else if (netdev_feature_test_bit(NETIF_F_HW_HSR_TAG_INS_BIT,

• 			   port->dev->features)) {
  

  return skb_clone(frame->skb_std, GFP_ATOMIC); }

@@ -293,7 +294,8 @@ struct sk_buff *prp_create_tagged_frame(struct hsr_frame_info *frame, return NULL; } return skb_clone(frame->skb_prp, GFP_ATOMIC);

• } else if (port->dev->features & NETIF_F_HW_HSR_TAG_INS) {

• } else if (netdev_feature_test_bit(NETIF_F_HW_HSR_TAG_INS_BIT,

• 			   port->dev->features)) {
  

  return skb_clone(frame->skb_std, GFP_ATOMIC); }

@@ -349,7 +351,7 @@ bool prp_drop_frame(struct hsr_frame_info *frame, struct hsr_port *port)

bool hsr_drop_frame(struct hsr_frame_info *frame, struct hsr_port *port) {

• if (port->dev->features & NETIF_F_HW_HSR_FWD)

• if (netdev_feature_test_bit(NETIF_F_HW_HSR_FWD_BIT, port->dev->features)) return prp_drop_frame(frame, port);

  return false;

@@ -390,7 +392,8 @@ static void hsr_forward_do(struct hsr_frame_info *frame) /* If hardware duplicate generation is enabled, only send out * one port. */

• if ((port->dev->features & NETIF_F_HW_HSR_DUP) && sent)
  

• if (netdev_feature_test_bit(NETIF_F_HW_HSR_DUP_BIT,
  

• 			    port->dev->features) && sent)
  continue;
  
  

  /* Don't send frame over port where it has been sent before.

diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c index e31949479305..d0b1d9fe4f4f 100644 --- a/net/hsr/hsr_framereg.c +++ b/net/hsr/hsr_framereg.c @@ -397,7 +397,8 @@ void hsr_register_frame_in(struct hsr_node *node, struct hsr_port *port, * ensures entries of restarted nodes gets pruned so that they can * re-register and resume communications. */

• if (!(port->dev->features & NETIF_F_HW_HSR_TAG_RM) &&

• if (!netdev_feature_test_bit(NETIF_F_HW_HSR_TAG_RM_BIT,

• 		     port->dev->features) &&
  

  seq_nr_before(sequence_nr, node->seq_out[port->type])) return;

diff --git a/net/hsr/hsr_slave.c b/net/hsr/hsr_slave.c index b70e6bbf6021..a21a3035f6d2 100644 --- a/net/hsr/hsr_slave.c +++ b/net/hsr/hsr_slave.c @@ -54,7 +54,8 @@ static rx_handler_result_t hsr_handle_frame(struct sk_buff **pskb) */ protocol = eth_hdr(skb)->h_proto;

• if (!(port->dev->features & NETIF_F_HW_HSR_TAG_RM) &&

• if (!netdev_feature_test_bit(NETIF_F_HW_HSR_TAG_RM_BIT,

• 		     port->dev->features) &&
  

  hsr->proto_ops->invalid_dan_ingress_frame && hsr->proto_ops->invalid_dan_ingress_frame(protocol)) goto finish_pass;