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Subject[PATCH net-next v2 10/10] ipv6: partially inline ipv6_fixup_options
Date
Inline a part of ipv6_fixup_options() to avoid extra overhead on
function call if opt is NULL.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
include/net/ipv6.h | 12 ++++++++++--
net/ipv6/exthdrs.c | 8 ++++----
2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 5e0b56d66724..082f30256f59 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -437,8 +437,16 @@ struct ipv6_txoptions *ipv6_renew_options(struct sock *sk,
struct ipv6_txoptions *opt,
int newtype,
struct ipv6_opt_hdr *newopt);
-struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
- struct ipv6_txoptions *opt);
+struct ipv6_txoptions *__ipv6_fixup_options(struct ipv6_txoptions *opt_space,
+ struct ipv6_txoptions *opt);
+
+static inline struct ipv6_txoptions *
+ipv6_fixup_options(struct ipv6_txoptions *opt_space, struct ipv6_txoptions *opt)
+{
+ if (!opt)
+ return NULL;
+ return __ipv6_fixup_options(opt_space, opt);
+}

bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb,
const struct inet6_skb_parm *opt);
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 77e34aec7e82..658d5eabaf7e 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -1344,14 +1344,14 @@ ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
return opt2;
}

-struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,
- struct ipv6_txoptions *opt)
+struct ipv6_txoptions *__ipv6_fixup_options(struct ipv6_txoptions *opt_space,
+ struct ipv6_txoptions *opt)
{
/*
* ignore the dest before srcrt unless srcrt is being included.
* --yoshfuji
*/
- if (opt && opt->dst0opt && !opt->srcrt) {
+ if (opt->dst0opt && !opt->srcrt) {
if (opt_space != opt) {
memcpy(opt_space, opt, sizeof(*opt_space));
opt = opt_space;
@@ -1362,7 +1362,7 @@ struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space,

return opt;
}
-EXPORT_SYMBOL_GPL(ipv6_fixup_options);
+EXPORT_SYMBOL_GPL(__ipv6_fixup_options);

/**
* fl6_update_dst - update flowi destination address with info given
--
2.34.1
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