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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 authored and Vladimir Serbinenko committed 2017-05-03 13:03:50 +02:00
1 parent dc6e1b5af8
commit d9f7de0ae3
7 files changed
+92 -20
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include/grub/net.h
+3
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@@ -291,6 +291,7 @@ struct grub_net_network_level_interface
grub_net_interface_flags_t flags;
struct grub_net_bootp_packet *dhcp_ack;
grub_size_t dhcp_acklen;
grub_uint16_t vlantag;
void *data;
};
@@ -561,4 +562,6 @@ extern char *grub_net_default_server;
#define GRUB_NET_INTERVAL 400
#define GRUB_NET_INTERVAL_ADDITION 20
#define VLANTAG_IDENTIFIER 0x8100
#endif /* ! GRUB_NET_HEADER */