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net: 6lowpan: constify lowpan_nhc structures

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This patch constify the lowpan_nhc declarations. Since we drop the rb
node datastructure there is no need for runtime manipulation of this
structure.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Reviewed-by: Stefan Schmidt <stefan@datenfreihafen.org>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Link: https://lore.kernel.org/r/20220428030534.3220410-4-aahringo@redhat.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
This commit is contained in:
Alexander Aring 2022-04-27 23:05:34 -04:00 committed by Stefan Schmidt
parent 31264f9563
commit f3de6f4ecc
2 changed files with 11 additions and 11 deletions
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16
net/6lowpan/nhc.c
View File

@ -12,12 +12,12 @@
#include "nhc.h" #include "nhc.h"
static struct lowpan_nhc *lowpan_nexthdr_nhcs[NEXTHDR_MAX + 1]; static const struct lowpan_nhc *lowpan_nexthdr_nhcs[NEXTHDR_MAX + 1];
static DEFINE_SPINLOCK(lowpan_nhc_lock); static DEFINE_SPINLOCK(lowpan_nhc_lock);
static struct lowpan_nhc *lowpan_nhc_by_nhcid(struct sk_buff *skb) static const struct lowpan_nhc *lowpan_nhc_by_nhcid(struct sk_buff *skb)
{ {
struct lowpan_nhc *nhc; const struct lowpan_nhc *nhc;
int i; int i;
u8 id; u8 id;
@ -41,7 +41,7 @@ static struct lowpan_nhc *lowpan_nhc_by_nhcid(struct sk_buff *skb)
int lowpan_nhc_check_compression(struct sk_buff *skb, int lowpan_nhc_check_compression(struct sk_buff *skb,
const struct ipv6hdr *hdr, u8 **hc_ptr) const struct ipv6hdr *hdr, u8 **hc_ptr)
{ {
struct lowpan_nhc *nhc; const struct lowpan_nhc *nhc;
int ret = 0; int ret = 0;
spin_lock_bh(&lowpan_nhc_lock); spin_lock_bh(&lowpan_nhc_lock);
@ -59,7 +59,7 @@ int lowpan_nhc_do_compression(struct sk_buff *skb, const struct ipv6hdr *hdr,
u8 **hc_ptr) u8 **hc_ptr)
{ {
int ret; int ret;
struct lowpan_nhc *nhc; const struct lowpan_nhc *nhc;
spin_lock_bh(&lowpan_nhc_lock); spin_lock_bh(&lowpan_nhc_lock);
@ -102,7 +102,7 @@ int lowpan_nhc_do_uncompression(struct sk_buff *skb,
const struct net_device *dev, const struct net_device *dev,
struct ipv6hdr *hdr) struct ipv6hdr *hdr)
{ {
struct lowpan_nhc *nhc; const struct lowpan_nhc *nhc;
int ret; int ret;
spin_lock_bh(&lowpan_nhc_lock); spin_lock_bh(&lowpan_nhc_lock);
@ -138,7 +138,7 @@ int lowpan_nhc_do_uncompression(struct sk_buff *skb,
return 0; return 0;
} }
int lowpan_nhc_add(struct lowpan_nhc *nhc) int lowpan_nhc_add(const struct lowpan_nhc *nhc)
{ {
int ret = 0; int ret = 0;
@ -156,7 +156,7 @@ out:
} }
EXPORT_SYMBOL(lowpan_nhc_add); EXPORT_SYMBOL(lowpan_nhc_add);
void lowpan_nhc_del(struct lowpan_nhc *nhc) void lowpan_nhc_del(const struct lowpan_nhc *nhc)
{ {
spin_lock_bh(&lowpan_nhc_lock); spin_lock_bh(&lowpan_nhc_lock);

6
net/6lowpan/nhc.h
View File

@ -24,7 +24,7 @@
#define LOWPAN_NHC(__nhc, _name, _nexthdr, \ #define LOWPAN_NHC(__nhc, _name, _nexthdr, \
_hdrlen, _id, _idmask, \ _hdrlen, _id, _idmask, \
_uncompress, _compress) \ _uncompress, _compress) \
static struct lowpan_nhc __nhc = { \ static const struct lowpan_nhc __nhc = { \
.name = _name, \ .name = _name, \
.nexthdr = _nexthdr, \ .nexthdr = _nexthdr, \
.nexthdrlen = _hdrlen, \ .nexthdrlen = _hdrlen, \
@ -116,14 +116,14 @@ int lowpan_nhc_do_uncompression(struct sk_buff *skb,
* *
* @nhc: nhc which should be add. * @nhc: nhc which should be add.
*/ */
int lowpan_nhc_add(struct lowpan_nhc *nhc); int lowpan_nhc_add(const struct lowpan_nhc *nhc);
/** /**
* lowpan_nhc_del - delete a next header compression from framework * lowpan_nhc_del - delete a next header compression from framework
* *
* @nhc: nhc which should be delete. * @nhc: nhc which should be delete.
*/ */
void lowpan_nhc_del(struct lowpan_nhc *nhc); void lowpan_nhc_del(const struct lowpan_nhc *nhc);
/** /**
* lowpan_nhc_init - adding all default nhcs * lowpan_nhc_init - adding all default nhcs