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Add Virtual LAN support.

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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 Vincent Batts
parent 99ab28563b
commit 5696d56d33
7 changed files with 92 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

9
grub-core/net/drivers/ieee1275/ofnet.c
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@ -153,11 +153,11 @@ grub_ieee1275_parse_bootpath (const char *devpath, char *bootpath,
char *comma_char = 0;
char *equal_char = 0;
grub_size_t field_counter = 0;
grub_net_network_level_address_t client_addr, gateway_addr, subnet_mask;
grub_net_link_level_address_t hw_addr;
grub_net_interface_flags_t flags = 0;
struct grub_net_network_level_interface *inter = NULL;
grub_uint16_t vlantag = 0;
hw_addr.type = GRUB_NET_LINK_LEVEL_PROTOCOL_ETHERNET;
@ -175,6 +175,11 @@ grub_ieee1275_parse_bootpath (const char *devpath, char *bootpath,
*equal_char = 0;
grub_env_set_net_property ((*card)->name, args, equal_char + 1,
grub_strlen(equal_char + 1));
if ((grub_strcmp (args, "vtag") == 0) &&
(grub_strlen (equal_char + 1) == 8))
vlantag = grub_strtoul (equal_char + 1 + 4, 0, 16);
*equal_char = '=';
}
else
@ -213,8 +218,10 @@ grub_ieee1275_parse_bootpath (const char *devpath, char *bootpath,
hw_addr.mac, sizeof(hw_addr.mac), 0);
inter = grub_net_add_addr ((*card)->name, *card, &client_addr, &hw_addr,
flags);
inter->vlantag = vlantag;
grub_net_add_ipv4_local (inter,
__builtin_ctz (~grub_le_to_cpu32 (subnet_mask.ipv4)));
}
if (gateway_addr.ipv4 != 0)