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Commit c967a087 authored by Tom Herbert's avatar Tom Herbert Committed by David S. Miller
Browse files

mpls: Move reserved label definitions 



Move to include/uapi/linux/mpls.h to be externally visibile.

Signed-off-by: default avatarTom Herbert <tom@herbertland.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bc321ed2

include/uapi/linux/mpls.h

+10 −0
Original line number Diff line number Diff line
@@ -31,4 +31,14 @@ struct mpls_label { 
#define MPLS_LS_TTL_MASK        0x000000FF

#define MPLS_LS_TTL_SHIFT       0



/* Reserved labels */

#define MPLS_LABEL_IPV4_EXPLICIT_NULL	0 /* RFC3032 */

#define MPLS_LABEL_ROUTER_ALERT		1 /* RFC3032 */

#define MPLS_LABEL_IPV6_EXPLICIT_NULL	2 /* RFC3032 */

#define MPLS_LABEL_IMPLICIT_NULL	3 /* RFC3032 */

#define MPLS_LABEL_ENTROPY_INDICATOR	7 /* RFC6790 */

#define MPLS_LABEL_GAL			13 /* RFC5586 */

#define MPLS_LABEL_OAM_ALERT		14 /* RFC3429 */

#define MPLS_LABEL_EXTENSION		15 /* RFC7274 */



#endif /* _UAPI_MPLS_H */

net/mpls/af_mpls.c

+9 −9
Original line number Diff line number Diff line
@@ -647,7 +647,7 @@ int nla_get_labels(const struct nlattr *nla, 
			return -EINVAL;



		switch (dec.label) {

		case LABEL_IMPLICIT_NULL:

		case MPLS_LABEL_IMPLICIT_NULL:

			/* RFC3032: This is a label that an LSR may

			 * assign and distribute, but which never

			 * actually appears in the encapsulation.
@@ -935,7 +935,7 @@ static int resize_platform_label_table(struct net *net, size_t limit) 
	}



	/* In case the predefined labels need to be populated */

	if (limit > LABEL_IPV4_EXPLICIT_NULL) {

	if (limit > MPLS_LABEL_IPV4_EXPLICIT_NULL) {

		struct net_device *lo = net->loopback_dev;

		rt0 = mpls_rt_alloc(lo->addr_len);

		if (!rt0)
@@ -945,7 +945,7 @@ static int resize_platform_label_table(struct net *net, size_t limit) 
		rt0->rt_via_table = NEIGH_LINK_TABLE;

		memcpy(rt0->rt_via, lo->dev_addr, lo->addr_len);

	}

	if (limit > LABEL_IPV6_EXPLICIT_NULL) {

	if (limit > MPLS_LABEL_IPV6_EXPLICIT_NULL) {

		struct net_device *lo = net->loopback_dev;

		rt2 = mpls_rt_alloc(lo->addr_len);

		if (!rt2)
@@ -973,15 +973,15 @@ static int resize_platform_label_table(struct net *net, size_t limit) 
	memcpy(labels, old, cp_size);



	/* If needed set the predefined labels */

	if ((old_limit <= LABEL_IPV6_EXPLICIT_NULL) &&

	    (limit > LABEL_IPV6_EXPLICIT_NULL)) {

		RCU_INIT_POINTER(labels[LABEL_IPV6_EXPLICIT_NULL], rt2);

	if ((old_limit <= MPLS_LABEL_IPV6_EXPLICIT_NULL) &&

	    (limit > MPLS_LABEL_IPV6_EXPLICIT_NULL)) {

		RCU_INIT_POINTER(labels[MPLS_LABEL_IPV6_EXPLICIT_NULL], rt2);

		rt2 = NULL;

	}



	if ((old_limit <= LABEL_IPV4_EXPLICIT_NULL) &&

	    (limit > LABEL_IPV4_EXPLICIT_NULL)) {

		RCU_INIT_POINTER(labels[LABEL_IPV4_EXPLICIT_NULL], rt0);

	if ((old_limit <= MPLS_LABEL_IPV4_EXPLICIT_NULL) &&

	    (limit > MPLS_LABEL_IPV4_EXPLICIT_NULL)) {

		RCU_INIT_POINTER(labels[MPLS_LABEL_IPV4_EXPLICIT_NULL], rt0);

		rt0 = NULL;

	}

net/mpls/internal.h

+0 −10
Original line number Diff line number Diff line 
#ifndef MPLS_INTERNAL_H

#define MPLS_INTERNAL_H



#define LABEL_IPV4_EXPLICIT_NULL	0 /* RFC3032 */

#define LABEL_ROUTER_ALERT_LABEL	1 /* RFC3032 */

#define LABEL_IPV6_EXPLICIT_NULL	2 /* RFC3032 */

#define LABEL_IMPLICIT_NULL		3 /* RFC3032 */

#define LABEL_ENTROPY_INDICATOR		7 /* RFC6790 */

#define LABEL_GAL			13 /* RFC5586 */

#define LABEL_OAM_ALERT			14 /* RFC3429 */

#define LABEL_EXTENSION			15 /* RFC7274 */





struct mpls_shim_hdr {

	__be32 label_stack_entry;

};