vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Add Virtual LAN support.

Browse source 
This patch adds support for virtual LAN (VLAN) tagging. VLAN tagging allows
multiple VLANs in a bridged network to share the same physical network link
but maintain isolation:

http://en.wikipedia.org/wiki/IEEE_802.1Q

* grub-core/net/ethernet.c: Add check, get, and set vlan tag id.
* grub-core/net/drivers/ieee1275/ofnet.c: Get vlan tag id from bootargs.
* grub-core/net/arp.c: Add check.
* grub-core/net/ip.c: Likewise.
* include/grub/net/arp.h: Add vlantag attribute.
* include/grub/net/ip.h: Likewise.
This commit is contained in:
Paulo Flabiano Smorigo 2013-12-23 12:32:02 -02:00 • committed by Vladimir Serbinenko
parent dc6e1b5af8
commit d9f7de0ae3
7 changed files with 92 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

33
grub-core/net/ip.c
View file

@ -228,12 +228,13 @@ handle_dgram (struct grub_net_buff *nb,
grub_net_ip_protocol_t proto,
const grub_net_network_level_address_t *source,
const grub_net_network_level_address_t *dest,
grub_uint16_t *vlantag,
grub_uint8_t ttl)
{
struct grub_net_network_level_interface *inf = NULL;
grub_err_t err;
int multicast = 0;
/* DHCP needs special treatment since we don't know IP yet. */
{
struct udphdr *udph;
@ -293,6 +294,15 @@ handle_dgram (struct grub_net_buff *nb,
&& grub_net_addr_cmp (&inf->address, dest) == 0
&& grub_net_hwaddr_cmp (&inf->hwaddress, hwaddress) == 0)
break;
/* Verify vlantag id */
if (inf->card == card && inf->vlantag != *vlantag)
{
grub_dprintf ("net", "invalid vlantag! %x != %x\n",
inf->vlantag, *vlantag);
break;
}
/* Solicited node multicast. */
if (inf->card == card
&& inf->address.type == GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV6
@ -383,7 +393,8 @@ static grub_err_t
grub_net_recv_ip4_packets (struct grub_net_buff *nb,
struct grub_net_card *card,
const grub_net_link_level_address_t *hwaddress,
const grub_net_link_level_address_t *src_hwaddress)
const grub_net_link_level_address_t *src_hwaddress,
grub_uint16_t *vlantag)
{
struct iphdr *iph = (struct iphdr *) nb->data;
grub_err_t err;
@ -458,7 +469,7 @@ grub_net_recv_ip4_packets (struct grub_net_buff *nb,
dest.ipv4 = iph->dest;
return handle_dgram (nb, card, src_hwaddress, hwaddress, iph->protocol,
&source, &dest, iph->ttl);
&source, &dest, vlantag, iph->ttl);
}
for (prev = &reassembles, rsm = *prev; rsm; prev = &rsm->next, rsm = *prev)
@ -594,7 +605,7 @@ grub_net_recv_ip4_packets (struct grub_net_buff *nb,
dest.ipv4 = dst;
return handle_dgram (ret, card, src_hwaddress,
hwaddress, proto, &source, &dest,
hwaddress, proto, &source, &dest, vlantag,
ttl);
}
}
@ -652,7 +663,8 @@ static grub_err_t
grub_net_recv_ip6_packets (struct grub_net_buff *nb,
struct grub_net_card *card,
const grub_net_link_level_address_t *hwaddress,
const grub_net_link_level_address_t *src_hwaddress)
const grub_net_link_level_address_t *src_hwaddress,
grub_uint16_t *vlantag)
{
struct ip6hdr *iph = (struct ip6hdr *) nb->data;
grub_err_t err;
@ -703,21 +715,24 @@ grub_net_recv_ip6_packets (struct grub_net_buff *nb,
grub_memcpy (dest.ipv6, &iph->dest, sizeof (dest.ipv6));
return handle_dgram (nb, card, src_hwaddress, hwaddress, iph->protocol,
&source, &dest, iph->ttl);
&source, &dest, vlantag, iph->ttl);
}
grub_err_t
grub_net_recv_ip_packets (struct grub_net_buff *nb,
struct grub_net_card *card,
const grub_net_link_level_address_t *hwaddress,
const grub_net_link_level_address_t *src_hwaddress)
const grub_net_link_level_address_t *src_hwaddress,
grub_uint16_t *vlantag)
{
struct iphdr *iph = (struct iphdr *) nb->data;
if ((iph->verhdrlen >> 4) == 4)
return grub_net_recv_ip4_packets (nb, card, hwaddress, src_hwaddress);
return grub_net_recv_ip4_packets (nb, card, hwaddress, src_hwaddress,
vlantag);
if ((iph->verhdrlen >> 4) == 6)
return grub_net_recv_ip6_packets (nb, card, hwaddress, src_hwaddress);
return grub_net_recv_ip6_packets (nb, card, hwaddress, src_hwaddress,
vlantag);
grub_dprintf ("net", "Bad IP version: %d\n", (iph->verhdrlen >> 4));
grub_netbuff_free (nb);
return GRUB_ERR_NONE;