From 152bca090243f2aebbf4c0a2aa723ab610e6f3c4 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Sat, 5 Jun 2021 12:54:43 +0200
Subject: xfrm: remove description from xfrm_type struct
Its set but never read. Reduces size of xfrm_type to 64 bytes on 64bit.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
---
net/ipv6/ah6.c | 1 -
net/ipv6/esp6.c | 1 -
net/ipv6/esp6_offload.c | 1 -
net/ipv6/ipcomp6.c | 1 -
net/ipv6/mip6.c | 2 --
net/ipv6/xfrm6_tunnel.c | 1 -
6 files changed, 7 deletions(-)
(limited to 'net/ipv6')
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index 20d492da725a..e9705c256068 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -755,7 +755,6 @@ static int ah6_rcv_cb(struct sk_buff *skb, int err)
}
static const struct xfrm_type ah6_type = {
- .description = "AH6",
.owner = THIS_MODULE,
.proto = IPPROTO_AH,
.flags = XFRM_TYPE_REPLAY_PROT,
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 393ae2b78e7d..be2c0ac76eaa 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -1243,7 +1243,6 @@ static int esp6_rcv_cb(struct sk_buff *skb, int err)
}
static const struct xfrm_type esp6_type = {
- .description = "ESP6",
.owner = THIS_MODULE,
.proto = IPPROTO_ESP,
.flags = XFRM_TYPE_REPLAY_PROT,
diff --git a/net/ipv6/esp6_offload.c b/net/ipv6/esp6_offload.c
index 40ed4fcf1cf4..a349d4798077 100644
--- a/net/ipv6/esp6_offload.c
+++ b/net/ipv6/esp6_offload.c
@@ -377,7 +377,6 @@ static const struct net_offload esp6_offload = {
};
static const struct xfrm_type_offload esp6_type_offload = {
- .description = "ESP6 OFFLOAD",
.owner = THIS_MODULE,
.proto = IPPROTO_ESP,
.input_tail = esp6_input_tail,
diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index daef890460b7..491aba66b7ae 100644
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -172,7 +172,6 @@ static int ipcomp6_rcv_cb(struct sk_buff *skb, int err)
}
static const struct xfrm_type ipcomp6_type = {
- .description = "IPCOMP6",
.owner = THIS_MODULE,
.proto = IPPROTO_COMP,
.init_state = ipcomp6_init_state,
diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 878fcec14949..bc560e1664aa 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -324,7 +324,6 @@ static void mip6_destopt_destroy(struct xfrm_state *x)
}
static const struct xfrm_type mip6_destopt_type = {
- .description = "MIP6DESTOPT",
.owner = THIS_MODULE,
.proto = IPPROTO_DSTOPTS,
.flags = XFRM_TYPE_NON_FRAGMENT | XFRM_TYPE_LOCAL_COADDR,
@@ -456,7 +455,6 @@ static void mip6_rthdr_destroy(struct xfrm_state *x)
}
static const struct xfrm_type mip6_rthdr_type = {
- .description = "MIP6RT",
.owner = THIS_MODULE,
.proto = IPPROTO_ROUTING,
.flags = XFRM_TYPE_NON_FRAGMENT | XFRM_TYPE_REMOTE_COADDR,
diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index f696d46e6910..2b31112c0856 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -291,7 +291,6 @@ static void xfrm6_tunnel_destroy(struct xfrm_state *x)
}
static const struct xfrm_type xfrm6_tunnel_type = {
- .description = "IP6IP6",
.owner = THIS_MODULE,
.proto = IPPROTO_IPV6,
.init_state = xfrm6_tunnel_init_state,
--
cgit v1.2.3-70-g09d2
From 37b9e7eb55659b270f0e8aebd98308716d935586 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Fri, 11 Jun 2021 12:50:11 +0200
Subject: xfrm: ipv6: move mip6_destopt_offset into xfrm core
This helper is relatively small, just move this to the xfrm core
and call it directly.
Next patch does the same for the ROUTING type.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
---
net/ipv6/mip6.c | 49 -------------------------------------------
net/xfrm/xfrm_output.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 57 insertions(+), 49 deletions(-)
(limited to 'net/ipv6')
diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index bc560e1664aa..fba3b56a7dd2 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -247,54 +247,6 @@ static int mip6_destopt_reject(struct xfrm_state *x, struct sk_buff *skb,
return err;
}
-static int mip6_destopt_offset(struct xfrm_state *x, struct sk_buff *skb,
- u8 **nexthdr)
-{
- u16 offset = sizeof(struct ipv6hdr);
- struct ipv6_opt_hdr *exthdr =
- (struct ipv6_opt_hdr *)(ipv6_hdr(skb) + 1);
- const unsigned char *nh = skb_network_header(skb);
- unsigned int packet_len = skb_tail_pointer(skb) -
- skb_network_header(skb);
- int found_rhdr = 0;
-
- *nexthdr = &ipv6_hdr(skb)->nexthdr;
-
- while (offset + 1 <= packet_len) {
-
- switch (**nexthdr) {
- case NEXTHDR_HOP:
- break;
- case NEXTHDR_ROUTING:
- found_rhdr = 1;
- break;
- case NEXTHDR_DEST:
- /*
- * HAO MUST NOT appear more than once.
- * XXX: It is better to try to find by the end of
- * XXX: packet if HAO exists.
- */
- if (ipv6_find_tlv(skb, offset, IPV6_TLV_HAO) >= 0) {
- net_dbg_ratelimited("mip6: hao exists already, override\n");
- return offset;
- }
-
- if (found_rhdr)
- return offset;
-
- break;
- default:
- return offset;
- }
-
- offset += ipv6_optlen(exthdr);
- *nexthdr = &exthdr->nexthdr;
- exthdr = (struct ipv6_opt_hdr *)(nh + offset);
- }
-
- return offset;
-}
-
static int mip6_destopt_init_state(struct xfrm_state *x)
{
if (x->id.spi) {
@@ -332,7 +284,6 @@ static const struct xfrm_type mip6_destopt_type = {
.input = mip6_destopt_input,
.output = mip6_destopt_output,
.reject = mip6_destopt_reject,
- .hdr_offset = mip6_destopt_offset,
};
static int mip6_rthdr_input(struct xfrm_state *x, struct sk_buff *skb)
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 6b44b6e738f7..29959054a535 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -77,8 +77,65 @@ static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb)
return 0;
}
+#if IS_ENABLED(CONFIG_IPV6_MIP6)
+static int mip6_destopt_offset(struct xfrm_state *x, struct sk_buff *skb,
+ u8 **nexthdr)
+{
+ u16 offset = sizeof(struct ipv6hdr);
+ struct ipv6_opt_hdr *exthdr =
+ (struct ipv6_opt_hdr *)(ipv6_hdr(skb) + 1);
+ const unsigned char *nh = skb_network_header(skb);
+ unsigned int packet_len = skb_tail_pointer(skb) -
+ skb_network_header(skb);
+ int found_rhdr = 0;
+
+ *nexthdr = &ipv6_hdr(skb)->nexthdr;
+
+ while (offset + 1 <= packet_len) {
+ switch (**nexthdr) {
+ case NEXTHDR_HOP:
+ break;
+ case NEXTHDR_ROUTING:
+ found_rhdr = 1;
+ break;
+ case NEXTHDR_DEST:
+ /* HAO MUST NOT appear more than once.
+ * XXX: It is better to try to find by the end of
+ * XXX: packet if HAO exists.
+ */
+ if (ipv6_find_tlv(skb, offset, IPV6_TLV_HAO) >= 0) {
+ net_dbg_ratelimited("mip6: hao exists already, override\n");
+ return offset;
+ }
+
+ if (found_rhdr)
+ return offset;
+
+ break;
+ default:
+ return offset;
+ }
+
+ offset += ipv6_optlen(exthdr);
+ *nexthdr = &exthdr->nexthdr;
+ exthdr = (struct ipv6_opt_hdr *)(nh + offset);
+ }
+
+ return offset;
+}
+#endif
+
static int xfrm6_hdr_offset(struct xfrm_state *x, struct sk_buff *skb, u8 **prevhdr)
{
+ switch (x->type->proto) {
+#if IS_ENABLED(CONFIG_IPV6_MIP6)
+ case IPPROTO_DSTOPTS:
+ return mip6_destopt_offset(x, skb, prevhdr);
+#endif
+ default:
+ break;
+ }
+
return x->type->hdr_offset(x, skb, prevhdr);
}
--
cgit v1.2.3-70-g09d2
From 848b18fb7fbd2fa5bc4fc2263bb69956fb86120d Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Fri, 11 Jun 2021 12:50:12 +0200
Subject: xfrm: ipv6: move mip6_rthdr_offset into xfrm core
Place the call into the xfrm core. After this all remaining users
set the hdr_offset function pointer to the same function which opens
the possiblity to remove the indirection.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
---
net/ipv6/mip6.c | 48 ------------------------------------------------
net/xfrm/xfrm_output.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 49 insertions(+), 48 deletions(-)
(limited to 'net/ipv6')
diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index fba3b56a7dd2..aeb35d26e474 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -333,53 +333,6 @@ static int mip6_rthdr_output(struct xfrm_state *x, struct sk_buff *skb)
return 0;
}
-static int mip6_rthdr_offset(struct xfrm_state *x, struct sk_buff *skb,
- u8 **nexthdr)
-{
- u16 offset = sizeof(struct ipv6hdr);
- struct ipv6_opt_hdr *exthdr =
- (struct ipv6_opt_hdr *)(ipv6_hdr(skb) + 1);
- const unsigned char *nh = skb_network_header(skb);
- unsigned int packet_len = skb_tail_pointer(skb) -
- skb_network_header(skb);
- int found_rhdr = 0;
-
- *nexthdr = &ipv6_hdr(skb)->nexthdr;
-
- while (offset + 1 <= packet_len) {
-
- switch (**nexthdr) {
- case NEXTHDR_HOP:
- break;
- case NEXTHDR_ROUTING:
- if (offset + 3 <= packet_len) {
- struct ipv6_rt_hdr *rt;
- rt = (struct ipv6_rt_hdr *)(nh + offset);
- if (rt->type != 0)
- return offset;
- }
- found_rhdr = 1;
- break;
- case NEXTHDR_DEST:
- if (ipv6_find_tlv(skb, offset, IPV6_TLV_HAO) >= 0)
- return offset;
-
- if (found_rhdr)
- return offset;
-
- break;
- default:
- return offset;
- }
-
- offset += ipv6_optlen(exthdr);
- *nexthdr = &exthdr->nexthdr;
- exthdr = (struct ipv6_opt_hdr *)(nh + offset);
- }
-
- return offset;
-}
-
static int mip6_rthdr_init_state(struct xfrm_state *x)
{
if (x->id.spi) {
@@ -413,7 +366,6 @@ static const struct xfrm_type mip6_rthdr_type = {
.destructor = mip6_rthdr_destroy,
.input = mip6_rthdr_input,
.output = mip6_rthdr_output,
- .hdr_offset = mip6_rthdr_offset,
};
static int __init mip6_init(void)
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 29959054a535..1734339b6dd0 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -123,6 +123,53 @@ static int mip6_destopt_offset(struct xfrm_state *x, struct sk_buff *skb,
return offset;
}
+
+static int mip6_rthdr_offset(struct xfrm_state *x, struct sk_buff *skb,
+ u8 **nexthdr)
+{
+ u16 offset = sizeof(struct ipv6hdr);
+ struct ipv6_opt_hdr *exthdr =
+ (struct ipv6_opt_hdr *)(ipv6_hdr(skb) + 1);
+ const unsigned char *nh = skb_network_header(skb);
+ unsigned int packet_len = skb_tail_pointer(skb) -
+ skb_network_header(skb);
+ int found_rhdr = 0;
+
+ *nexthdr = &ipv6_hdr(skb)->nexthdr;
+
+ while (offset + 1 <= packet_len) {
+ switch (**nexthdr) {
+ case NEXTHDR_HOP:
+ break;
+ case NEXTHDR_ROUTING:
+ if (offset + 3 <= packet_len) {
+ struct ipv6_rt_hdr *rt;
+
+ rt = (struct ipv6_rt_hdr *)(nh + offset);
+ if (rt->type != 0)
+ return offset;
+ }
+ found_rhdr = 1;
+ break;
+ case NEXTHDR_DEST:
+ if (ipv6_find_tlv(skb, offset, IPV6_TLV_HAO) >= 0)
+ return offset;
+
+ if (found_rhdr)
+ return offset;
+
+ break;
+ default:
+ return offset;
+ }
+
+ offset += ipv6_optlen(exthdr);
+ *nexthdr = &exthdr->nexthdr;
+ exthdr = (struct ipv6_opt_hdr *)(nh + offset);
+ }
+
+ return offset;
+}
#endif
static int xfrm6_hdr_offset(struct xfrm_state *x, struct sk_buff *skb, u8 **prevhdr)
@@ -131,6 +178,8 @@ static int xfrm6_hdr_offset(struct xfrm_state *x, struct sk_buff *skb, u8 **prev
#if IS_ENABLED(CONFIG_IPV6_MIP6)
case IPPROTO_DSTOPTS:
return mip6_destopt_offset(x, skb, prevhdr);
+ case IPPROTO_ROUTING:
+ return mip6_rthdr_offset(x, skb, prevhdr);
#endif
default:
break;
--
cgit v1.2.3-70-g09d2
From d1002d2490e3ebc30dd3ba747656cfa90c87e984 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Fri, 11 Jun 2021 12:50:13 +0200
Subject: xfrm: remove hdr_offset indirection
After previous patches all remaining users set the function pointer to
the same function: xfrm6_find_1stfragopt.
So remove this function pointer and call ip6_find_1stfragopt directly.
Reduces size of xfrm_type to 64 bytes on 64bit platforms.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
---
include/net/xfrm.h | 3 ---
net/ipv6/ah6.c | 1 -
net/ipv6/esp6.c | 1 -
net/ipv6/ipcomp6.c | 1 -
net/ipv6/xfrm6_output.c | 7 -------
net/xfrm/xfrm_output.c | 2 +-
6 files changed, 1 insertion(+), 14 deletions(-)
(limited to 'net/ipv6')
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 1aad78c5f2d5..c8890da00b8a 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -402,7 +402,6 @@ struct xfrm_type {
int (*output)(struct xfrm_state *, struct sk_buff *pskb);
int (*reject)(struct xfrm_state *, struct sk_buff *,
const struct flowi *);
- int (*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **);
};
int xfrm_register_type(const struct xfrm_type *type, unsigned short family);
@@ -1605,8 +1604,6 @@ __be32 xfrm6_tunnel_alloc_spi(struct net *net, xfrm_address_t *saddr);
__be32 xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr);
int xfrm6_output(struct net *net, struct sock *sk, struct sk_buff *skb);
int xfrm6_output_finish(struct sock *sk, struct sk_buff *skb);
-int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
- u8 **prevhdr);
#ifdef CONFIG_XFRM
void xfrm6_local_rxpmtu(struct sk_buff *skb, u32 mtu);
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index e9705c256068..828e62514260 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -762,7 +762,6 @@ static const struct xfrm_type ah6_type = {
.destructor = ah6_destroy,
.input = ah6_input,
.output = ah6_output,
- .hdr_offset = xfrm6_find_1stfragopt,
};
static struct xfrm6_protocol ah6_protocol = {
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index be2c0ac76eaa..37c4b1726c5e 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -1250,7 +1250,6 @@ static const struct xfrm_type esp6_type = {
.destructor = esp6_destroy,
.input = esp6_input,
.output = esp6_output,
- .hdr_offset = xfrm6_find_1stfragopt,
};
static struct xfrm6_protocol esp6_protocol = {
diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index 491aba66b7ae..15f984be3570 100644
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -178,7 +178,6 @@ static const struct xfrm_type ipcomp6_type = {
.destructor = ipcomp_destroy,
.input = ipcomp_input,
.output = ipcomp_output,
- .hdr_offset = xfrm6_find_1stfragopt,
};
static struct xfrm6_protocol ipcomp6_protocol = {
diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
index 8b84d534b19d..57fa27c1cdf9 100644
--- a/net/ipv6/xfrm6_output.c
+++ b/net/ipv6/xfrm6_output.c
@@ -16,13 +16,6 @@
#include <net/ip6_route.h>
#include <net/xfrm.h>
-int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
- u8 **prevhdr)
-{
- return ip6_find_1stfragopt(skb, prevhdr);
-}
-EXPORT_SYMBOL(xfrm6_find_1stfragopt);
-
void xfrm6_local_rxpmtu(struct sk_buff *skb, u32 mtu)
{
struct flowi6 fl6;
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 1734339b6dd0..10842d5cf6e1 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -185,7 +185,7 @@ static int xfrm6_hdr_offset(struct xfrm_state *x, struct sk_buff *skb, u8 **prev
break;
}
- return x->type->hdr_offset(x, skb, prevhdr);
+ return ip6_find_1stfragopt(skb, prevhdr);
}
/* Add encapsulation header.
--
cgit v1.2.3-70-g09d2