Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

include/linux/if_packet.h

@@ -0,0 +1,102 @@
+#ifndef __LINUX_IF_PACKET_H
+#define __LINUX_IF_PACKET_H
+
+struct sockaddr_pkt
+{
+	unsigned short spkt_family;
+	unsigned char spkt_device[14];
+	unsigned short spkt_protocol;
+};
+
+struct sockaddr_ll
+{
+	unsigned short	sll_family;
+	unsigned short	sll_protocol;
+	int		sll_ifindex;
+	unsigned short	sll_hatype;
+	unsigned char	sll_pkttype;
+	unsigned char	sll_halen;
+	unsigned char	sll_addr[8];
+};
+
+/* Packet types */
+
+#define PACKET_HOST		0		/* To us		*/
+#define PACKET_BROADCAST	1		/* To all		*/
+#define PACKET_MULTICAST	2		/* To group		*/
+#define PACKET_OTHERHOST	3		/* To someone else 	*/
+#define PACKET_OUTGOING		4		/* Outgoing of any type */
+/* These ones are invisible by user level */
+#define PACKET_LOOPBACK		5		/* MC/BRD frame looped back */
+#define PACKET_FASTROUTE	6		/* Fastrouted frame	*/
+
+/* Packet socket options */
+
+#define PACKET_ADD_MEMBERSHIP		1
+#define PACKET_DROP_MEMBERSHIP		2
+#define PACKET_RECV_OUTPUT		3
+/* Value 4 is still used by obsolete turbo-packet. */
+#define PACKET_RX_RING			5
+#define PACKET_STATISTICS		6
+#define PACKET_COPY_THRESH		7
+
+struct tpacket_stats
+{
+	unsigned int	tp_packets;
+	unsigned int	tp_drops;
+};
+
+struct tpacket_hdr
+{
+	unsigned long	tp_status;
+#define TP_STATUS_KERNEL	0
+#define TP_STATUS_USER		1
+#define TP_STATUS_COPY		2
+#define TP_STATUS_LOSING	4
+#define TP_STATUS_CSUMNOTREADY	8
+	unsigned int	tp_len;
+	unsigned int	tp_snaplen;
+	unsigned short	tp_mac;
+	unsigned short	tp_net;
+	unsigned int	tp_sec;
+	unsigned int	tp_usec;
+};
+
+#define TPACKET_ALIGNMENT	16
+#define TPACKET_ALIGN(x)	(((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
+#define TPACKET_HDRLEN		(TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
+
+/*
+   Frame structure:
+
+   - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
+   - struct tpacket_hdr
+   - pad to TPACKET_ALIGNMENT=16
+   - struct sockaddr_ll
+   - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
+   - Start+tp_mac: [ Optional MAC header ]
+   - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
+   - Pad to align to TPACKET_ALIGNMENT=16
+ */
+
+struct tpacket_req
+{
+	unsigned int	tp_block_size;	/* Minimal size of contiguous block */
+	unsigned int	tp_block_nr;	/* Number of blocks */
+	unsigned int	tp_frame_size;	/* Size of frame */
+	unsigned int	tp_frame_nr;	/* Total number of frames */
+};
+
+struct packet_mreq
+{
+	int		mr_ifindex;
+	unsigned short	mr_type;
+	unsigned short	mr_alen;
+	unsigned char	mr_address[8];
+};
+
+#define PACKET_MR_MULTICAST	0
+#define PACKET_MR_PROMISC	1
+#define PACKET_MR_ALLMULTI	2
+
+#endif