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author | Florian Westphal <fw@strlen.de> | 2019-05-03 17:46:17 +0200 |
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committer | Steffen Klassert <steffen.klassert@secunet.com> | 2019-06-06 08:34:50 +0200 |
commit | 3aaf3915a31aac83523d2de0191a480d3ad1e747 (patch) | |
tree | ecae3204bda9b89b3d6a38d3b05232af71114bc3 /net/ipv6/xfrm6_state.c | |
parent | e46817472a1d7da32e8f265f9469a4e2fa39c60f (diff) | |
download | linux-3aaf3915a31aac83523d2de0191a480d3ad1e747.tar.gz linux-3aaf3915a31aac83523d2de0191a480d3ad1e747.tar.bz2 linux-3aaf3915a31aac83523d2de0191a480d3ad1e747.zip |
xfrm: remove state and template sort indirections from xfrm_state_afinfo
No module dependency, placing this in xfrm_state.c avoids need for
an indirection.
This also removes the state spinlock -- I don't see why we would need
to hold it during sorting.
This in turn allows to remove the 'net' argument passed to
xfrm_tmpl_sort. Last, remove the EXPORT_SYMBOL, there are no modular
callers.
For the CONFIG_IPV6=m case, vmlinux size increase is about 300 byte.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv6/xfrm6_state.c')
-rw-r--r-- | net/ipv6/xfrm6_state.c | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/net/ipv6/xfrm6_state.c b/net/ipv6/xfrm6_state.c index aa5d2c52cc31..1782ebb22dd3 100644 --- a/net/ipv6/xfrm6_state.c +++ b/net/ipv6/xfrm6_state.c @@ -21,102 +21,6 @@ #include <net/ipv6.h> #include <net/addrconf.h> -/* distribution counting sort function for xfrm_state and xfrm_tmpl */ -static int -__xfrm6_sort(void **dst, void **src, int n, int (*cmp)(void *p), int maxclass) -{ - int count[XFRM_MAX_DEPTH] = { }; - int class[XFRM_MAX_DEPTH]; - int i; - - for (i = 0; i < n; i++) { - int c; - class[i] = c = cmp(src[i]); - count[c]++; - } - - for (i = 2; i < maxclass; i++) - count[i] += count[i - 1]; - - for (i = 0; i < n; i++) { - dst[count[class[i] - 1]++] = src[i]; - src[i] = NULL; - } - - return 0; -} - -/* - * Rule for xfrm_state: - * - * rule 1: select IPsec transport except AH - * rule 2: select MIPv6 RO or inbound trigger - * rule 3: select IPsec transport AH - * rule 4: select IPsec tunnel - * rule 5: others - */ -static int __xfrm6_state_sort_cmp(void *p) -{ - struct xfrm_state *v = p; - - switch (v->props.mode) { - case XFRM_MODE_TRANSPORT: - if (v->id.proto != IPPROTO_AH) - return 1; - else - return 3; -#if IS_ENABLED(CONFIG_IPV6_MIP6) - case XFRM_MODE_ROUTEOPTIMIZATION: - case XFRM_MODE_IN_TRIGGER: - return 2; -#endif - case XFRM_MODE_TUNNEL: - case XFRM_MODE_BEET: - return 4; - } - return 5; -} - -static int -__xfrm6_state_sort(struct xfrm_state **dst, struct xfrm_state **src, int n) -{ - return __xfrm6_sort((void **)dst, (void **)src, n, - __xfrm6_state_sort_cmp, 6); -} - -/* - * Rule for xfrm_tmpl: - * - * rule 1: select IPsec transport - * rule 2: select MIPv6 RO or inbound trigger - * rule 3: select IPsec tunnel - * rule 4: others - */ -static int __xfrm6_tmpl_sort_cmp(void *p) -{ - struct xfrm_tmpl *v = p; - switch (v->mode) { - case XFRM_MODE_TRANSPORT: - return 1; -#if IS_ENABLED(CONFIG_IPV6_MIP6) - case XFRM_MODE_ROUTEOPTIMIZATION: - case XFRM_MODE_IN_TRIGGER: - return 2; -#endif - case XFRM_MODE_TUNNEL: - case XFRM_MODE_BEET: - return 3; - } - return 4; -} - -static int -__xfrm6_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n) -{ - return __xfrm6_sort((void **)dst, (void **)src, n, - __xfrm6_tmpl_sort_cmp, 5); -} - int xfrm6_extract_header(struct sk_buff *skb) { struct ipv6hdr *iph = ipv6_hdr(skb); @@ -138,8 +42,6 @@ static struct xfrm_state_afinfo xfrm6_state_afinfo = { .proto = IPPROTO_IPV6, .eth_proto = htons(ETH_P_IPV6), .owner = THIS_MODULE, - .tmpl_sort = __xfrm6_tmpl_sort, - .state_sort = __xfrm6_state_sort, .output = xfrm6_output, .output_finish = xfrm6_output_finish, .extract_input = xfrm6_extract_input, |