From 6437866e493fa5aa5be03dfb94e1d686a7fc984b Mon Sep 17 00:00:00 2001 From: Maxim Mikityanskiy Date: Thu, 21 Feb 2019 12:40:02 +0000 Subject: [PATCH] net/packet: Remove redundant skb->protocol set c72219b75f introduced tpacket_set_protocol that parses the Ethernet L2 header and sets skb->protocol if it's unset. It is no longer needed since the introduction of packet_parse_headers. In case of SOCK_RAW and unset skb->protocol, packet_parse_headers asks the driver to tell the protocol number, and it's implemented for all Ethernet devices. As the old function supported only Ethernet, no functionality is lost. Signed-off-by: Maxim Mikityanskiy Signed-off-by: David S. Miller --- net/packet/af_packet.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index cac4c1a3f807..8376bc1c1508 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -2413,15 +2413,6 @@ static void tpacket_destruct_skb(struct sk_buff *skb) sock_wfree(skb); } -static void tpacket_set_protocol(const struct net_device *dev, - struct sk_buff *skb) -{ - if (dev->type == ARPHRD_ETHER) { - skb_reset_mac_header(skb); - skb->protocol = eth_hdr(skb)->h_proto; - } -} - static int __packet_snd_vnet_parse(struct virtio_net_hdr *vnet_hdr, size_t len) { if ((vnet_hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && @@ -2492,8 +2483,6 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb, return err; if (!dev_validate_header(dev, skb->data, hdrlen)) return -EINVAL; - if (!skb->protocol) - tpacket_set_protocol(dev, skb); data += hdrlen; to_write -= hdrlen; -- 2.39.5