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xfrm: make xfrm modes builtin

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after previous changes, xfrm_mode contains no function pointers anymore
and all modules defining such struct contain no code except an init/exit
functions to register the xfrm_mode struct with the xfrm core.

Just place the xfrm modes core and remove the modules,
the run-time xfrm_mode register/unregister functionality is removed.

Before:

    text    data     bss      dec filename
    7523     200    2364    10087 net/xfrm/xfrm_input.o
   40003     628     440    41071 net/xfrm/xfrm_state.o
15730338 6937080 4046908 26714326 vmlinux

    7389     200    2364    9953  net/xfrm/xfrm_input.o
   40574     656     440   41670  net/xfrm/xfrm_state.o
15730084 6937068 4046908 26714060 vmlinux

The xfrm*_mode_{transport,tunnel,beet} modules are gone.

v2: replace CONFIG_INET6_XFRM_MODE_* IS_ENABLED guards with CONFIG_IPV6
    ones rather than removing them.

Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Florian Westphal
2019-03-29 21:16:31 +01:00
committed by Steffen Klassert
parent 733a5fac2f
commit 4c145dce26
20 changed files with 80 additions and 492 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
net/xfrm/xfrm_output.c
View File

@@ -61,7 +61,6 @@ static struct dst_entry *skb_dst_pop(struct sk_buff *skb)
*/
static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb)
{
#if IS_ENABLED(CONFIG_INET_XFRM_MODE_TRANSPORT)
struct iphdr *iph = ip_hdr(skb);
int ihl = iph->ihl * 4;
@@ -74,10 +73,6 @@ static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb)
__skb_pull(skb, ihl);
memmove(skb_network_header(skb), iph, ihl);
return 0;
#else
WARN_ON_ONCE(1);
return -EOPNOTSUPP;
#endif
}
/* Add encapsulation header.
@@ -87,7 +82,7 @@ static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb)
*/
static int xfrm6_transport_output(struct xfrm_state *x, struct sk_buff *skb)
{
#if IS_ENABLED(CONFIG_INET6_XFRM_MODE_TRANSPORT)
#if IS_ENABLED(CONFIG_IPV6)
struct ipv6hdr *iph;
u8 *prevhdr;
int hdr_len;
@@ -107,7 +102,7 @@ static int xfrm6_transport_output(struct xfrm_state *x, struct sk_buff *skb)
return 0;
#else
WARN_ON_ONCE(1);
return -EOPNOTSUPP;
return -EAFNOSUPPORT;
#endif
}
@@ -118,7 +113,7 @@ static int xfrm6_transport_output(struct xfrm_state *x, struct sk_buff *skb)
*/
static int xfrm6_ro_output(struct xfrm_state *x, struct sk_buff *skb)
{
#if IS_ENABLED(CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION)
#if IS_ENABLED(CONFIG_IPV6)
struct ipv6hdr *iph;
u8 *prevhdr;
int hdr_len;
@@ -140,7 +135,7 @@ static int xfrm6_ro_output(struct xfrm_state *x, struct sk_buff *skb)
return 0;
#else
WARN_ON_ONCE(1);
return -EOPNOTSUPP;
return -EAFNOSUPPORT;
#endif
}
@@ -624,7 +619,7 @@ EXPORT_SYMBOL_GPL(xfrm_output);
static int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb)
{
const struct xfrm_state_afinfo *afinfo;
struct xfrm_mode *inner_mode;
const struct xfrm_mode *inner_mode;
int err = -EAFNOSUPPORT;
if (x->sel.family == AF_UNSPEC)