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net: Make mpls_entry_encode() available for generic users

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Move mpls_entry_encode() from net/mpls/internal.h to include/net/mpls.h
and make it available for other users. Specifically, hardware driver that
offload MPLS can benefit from that.

Suggested-by: Jakub Kicinski <kuba@kernel.org>
Suggested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Eli Cohen 2020-05-27 08:35:03 +03:00 committed by Saeed Mahameed
parent e1167e1611
commit 86ae579cef
2 changed files with 17 additions and 11 deletions
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17
include/net/mpls.h
View File

@ -8,6 +8,7 @@
#include <linux/if_ether.h>
#include <linux/netdevice.h>
#include <linux/mpls.h>
#define MPLS_HLEN 4
@ -25,4 +26,20 @@ static inline struct mpls_shim_hdr *mpls_hdr(const struct sk_buff *skb)
{
return (struct mpls_shim_hdr *)skb_network_header(skb);
}
static inline struct mpls_shim_hdr mpls_entry_encode(u32 label,
unsigned int ttl,
unsigned int tc,
bool bos)
{
struct mpls_shim_hdr result;
result.label_stack_entry =
cpu_to_be32((label << MPLS_LS_LABEL_SHIFT) |
(tc << MPLS_LS_TC_SHIFT) |
(bos ? (1 << MPLS_LS_S_SHIFT) : 0) |
(ttl << MPLS_LS_TTL_SHIFT));
return result;
}
#endif

11
net/mpls/internal.h
View File

@ -172,17 +172,6 @@ struct mpls_route { /* next hop label forwarding entry */
#define endfor_nexthops(rt) }
static inline struct mpls_shim_hdr mpls_entry_encode(u32 label, unsigned ttl, unsigned tc, bool bos)
{
struct mpls_shim_hdr result;
result.label_stack_entry =
cpu_to_be32((label << MPLS_LS_LABEL_SHIFT) |
(tc << MPLS_LS_TC_SHIFT) |
(bos ? (1 << MPLS_LS_S_SHIFT) : 0) |
(ttl << MPLS_LS_TTL_SHIFT));
return result;
}
static inline struct mpls_entry_decoded mpls_entry_decode(struct mpls_shim_hdr *hdr)
{
struct mpls_entry_decoded result;