cregit-Linux how code gets into the kernel

Release 4.12 include/uapi/linux/mpls.h

#ifndef _UAPI_MPLS_H

#define _UAPI_MPLS_H

#include <linux/types.h>
#include <asm/byteorder.h>

/* Reference: RFC 5462, RFC 3032
 *
 *  0                   1                   2                   3
 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |                Label                  | TC  |S|       TTL     |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *
 *      Label:  Label Value, 20 bits
 *      TC:     Traffic Class field, 3 bits
 *      S:      Bottom of Stack, 1 bit
 *      TTL:    Time to Live, 8 bits
 */


struct mpls_label {
	
__be32 entry;
};


#define MPLS_LS_LABEL_MASK      0xFFFFF000

#define MPLS_LS_LABEL_SHIFT     12

#define MPLS_LS_TC_MASK         0x00000E00

#define MPLS_LS_TC_SHIFT        9

#define MPLS_LS_S_MASK          0x00000100

#define MPLS_LS_S_SHIFT         8

#define MPLS_LS_TTL_MASK        0x000000FF

#define MPLS_LS_TTL_SHIFT       0

/* Reserved labels */

#define MPLS_LABEL_IPV4NULL		0 
/* RFC3032 */

#define MPLS_LABEL_RTALERT		1 
/* RFC3032 */

#define MPLS_LABEL_IPV6NULL		2 
/* RFC3032 */

#define MPLS_LABEL_IMPLNULL		3 
/* RFC3032 */

#define MPLS_LABEL_ENTROPY		7 
/* RFC6790 */

#define MPLS_LABEL_GAL			13 
/* RFC5586 */

#define MPLS_LABEL_OAMALERT		14 
/* RFC3429 */

#define MPLS_LABEL_EXTENSION		15 
/* RFC7274 */


#define MPLS_LABEL_FIRST_UNRESERVED	16 
/* RFC3032 */

/* These are embedded into IFLA_STATS_AF_SPEC:
 * [IFLA_STATS_AF_SPEC]
 * -> [AF_MPLS]
 *    -> [MPLS_STATS_xxx]
 *
 * Attributes:
 * [MPLS_STATS_LINK] = {
 *     struct mpls_link_stats
 * }
 */
enum {
	
MPLS_STATS_UNSPEC, /* also used as 64bit pad attribute */
	
MPLS_STATS_LINK,
	
__MPLS_STATS_MAX,
};


#define MPLS_STATS_MAX (__MPLS_STATS_MAX - 1)


struct mpls_link_stats {
	
__u64	rx_packets;		/* total packets received       */
	
__u64	tx_packets;		/* total packets transmitted    */
	
__u64	rx_bytes;		/* total bytes received         */
	
__u64	tx_bytes;		/* total bytes transmitted      */
	
__u64	rx_errors;		/* bad packets received         */
	
__u64	tx_errors;		/* packet transmit problems     */
	
__u64	rx_dropped;		/* packet dropped on receive    */
	
__u64	tx_dropped;		/* packet dropped on transmit   */
	
__u64	rx_noroute;		/* no route for packet dest     */
};

#endif /* _UAPI_MPLS_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Robert Shearman6138.61%240.00%
Simon Wunderlich5635.44%120.00%
Tom Herbert4125.95%240.00%
Total158100.00%5100.00%
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