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authorBrian Vazquez <brianvv@google.com>2021-02-01 17:41:32 +0000
committerJakub Kicinski <kuba@kernel.org>2021-02-03 14:51:40 -0800
commitbbd807dfbf20506f5548b0297c430a09326e7c4b (patch)
treecb2a2d1c678a1b3546d119d6b3a32ebb8ec7818e /net/ipv6
parentf67fbeaebdc0356e0cbc94f4b099f45ebe174b02 (diff)
net: indirect call helpers for ipv4/ipv6 dst_check functions
This patch avoids the indirect call for the common case: ip6_dst_check and ipv4_dst_check Signed-off-by: Brian Vazquez <brianvv@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/route.c7
-rw-r--r--net/ipv6/tcp_ipv6.c5
2 files changed, 9 insertions, 3 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 886b2095097e..8d9e053dc071 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -81,7 +81,8 @@ enum rt6_nud_state {
RT6_NUD_SUCCEED = 1
};
-static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie);
+INDIRECT_CALLABLE_SCOPE
+struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie);
static unsigned int ip6_default_advmss(const struct dst_entry *dst);
INDIRECT_CALLABLE_SCOPE
unsigned int ip6_mtu(const struct dst_entry *dst);
@@ -2612,7 +2613,8 @@ static struct dst_entry *rt6_dst_from_check(struct rt6_info *rt,
return NULL;
}
-static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie)
+INDIRECT_CALLABLE_SCOPE struct dst_entry *ip6_dst_check(struct dst_entry *dst,
+ u32 cookie)
{
struct dst_entry *dst_ret;
struct fib6_info *from;
@@ -2642,6 +2644,7 @@ static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie)
return dst_ret;
}
+EXPORT_SYMBOL(ip6_dst_check);
static struct dst_entry *ip6_negative_advice(struct dst_entry *dst)
{
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 0e1509b02cb3..d093ef3ef060 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1420,6 +1420,8 @@ out:
return NULL;
}
+INDIRECT_CALLABLE_DECLARE(struct dst_entry *ipv4_dst_check(struct dst_entry *,
+ u32));
/* The socket must have it's spinlock held when we get
* here, unless it is a TCP_LISTEN socket.
*
@@ -1473,7 +1475,8 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
sk_mark_napi_id(sk, skb);
if (dst) {
if (inet_sk(sk)->rx_dst_ifindex != skb->skb_iif ||
- dst->ops->check(dst, np->rx_dst_cookie) == NULL) {
+ INDIRECT_CALL_1(dst->ops->check, ip6_dst_check,
+ dst, np->rx_dst_cookie) == NULL) {
dst_release(dst);
sk->sk_rx_dst = NULL;
}