diff options
author | Octavian Purdila <opurdila@ixiacom.com> | 2009-12-26 11:50:59 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2009-12-27 04:38:23 (GMT) |
commit | bf9ae5386bca8836c16e69ab8fdbe46767d7452a (patch) | |
tree | 1184d7062dd74f7ad2b85379a5bd40ab5b8ca4d6 /net | |
parent | f83d664eef180478c2dc0a0099e9d7bc1c8177ff (diff) | |
download | linux-bf9ae5386bca8836c16e69ab8fdbe46767d7452a.tar.xz |
llc: use dev_hard_header
Using dev_hard_header allows us to use LLC with VLANs and potentially
other Ethernet/TokernRing specific encapsulations. It also removes code
duplication between LLC and Ethernet/TokenRing core code.
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r-- | net/8021q/vlan_dev.c | 7 | ||||
-rw-r--r-- | net/ethernet/eth.c | 6 | ||||
-rw-r--r-- | net/llc/llc_output.c | 45 |
3 files changed, 14 insertions, 44 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index b788978..77a49ff 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -263,11 +263,10 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev, vhdr->h_vlan_TCI = htons(vlan_tci); /* - * Set the protocol type. For a packet of type ETH_P_802_3 we - * put the length in here instead. It is up to the 802.2 - * layer to carry protocol information. + * Set the protocol type. For a packet of type ETH_P_802_3/2 we + * put the length in here instead. */ - if (type != ETH_P_802_3) + if (type != ETH_P_802_3 && type != ETH_P_802_2) vhdr->h_vlan_encapsulated_proto = htons(type); else vhdr->h_vlan_encapsulated_proto = htons(len); diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c index dd3db88..205a1c1 100644 --- a/net/ethernet/eth.c +++ b/net/ethernet/eth.c @@ -73,8 +73,8 @@ __setup("ether=", netdev_boot_setup); * @len: packet length (<= skb->len) * * - * Set the protocol type. For a packet of type ETH_P_802_3 we put the length - * in here instead. It is up to the 802.2 layer to carry protocol information. + * Set the protocol type. For a packet of type ETH_P_802_3/2 we put the length + * in here instead. */ int eth_header(struct sk_buff *skb, struct net_device *dev, unsigned short type, @@ -82,7 +82,7 @@ int eth_header(struct sk_buff *skb, struct net_device *dev, { struct ethhdr *eth = (struct ethhdr *)skb_push(skb, ETH_HLEN); - if (type != ETH_P_802_3) + if (type != ETH_P_802_3 && type != ETH_P_802_2) eth->h_proto = htons(type); else eth->h_proto = htons(len); diff --git a/net/llc/llc_output.c b/net/llc/llc_output.c index 754f4fe..b38a107 100644 --- a/net/llc/llc_output.c +++ b/net/llc/llc_output.c @@ -33,48 +33,19 @@ int llc_mac_hdr_init(struct sk_buff *skb, const unsigned char *sa, const unsigned char *da) { - int rc = 0; + int rc = -EINVAL; switch (skb->dev->type) { -#ifdef CONFIG_TR - case ARPHRD_IEEE802_TR: { - struct net_device *dev = skb->dev; - struct trh_hdr *trh; - - skb_push(skb, sizeof(*trh)); - skb_reset_mac_header(skb); - trh = tr_hdr(skb); - trh->ac = AC; - trh->fc = LLC_FRAME; - if (sa) - memcpy(trh->saddr, sa, dev->addr_len); - else - memset(trh->saddr, 0, dev->addr_len); - if (da) { - memcpy(trh->daddr, da, dev->addr_len); - tr_source_route(skb, trh, dev); - skb_reset_mac_header(skb); - } - break; - } -#endif + case ARPHRD_IEEE802_TR: case ARPHRD_ETHER: - case ARPHRD_LOOPBACK: { - unsigned short len = skb->len; - struct ethhdr *eth; - - skb_push(skb, sizeof(*eth)); - skb_reset_mac_header(skb); - eth = eth_hdr(skb); - eth->h_proto = htons(len); - memcpy(eth->h_dest, da, ETH_ALEN); - memcpy(eth->h_source, sa, ETH_ALEN); + case ARPHRD_LOOPBACK: + rc = dev_hard_header(skb, skb->dev, ETH_P_802_2, da, sa, + skb->len); + if (rc > 0) + rc = 0; break; - } default: - printk(KERN_WARNING "device type not supported: %d\n", - skb->dev->type); - rc = -EINVAL; + WARN(1, "device type not supported: %d\n", skb->dev->type); } return rc; } |