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ipv6: partially inline ipv6_fixup_options

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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>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Pavel Begunkov 2022-01-27 00:36:31 +00:00 committed by Jakub Kicinski
parent 40ac240c2e
commit 31ed2261e8
2 changed files with 14 additions and 6 deletions
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12
include/net/ipv6.h
View File

@ -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);

8
net/ipv6/exthdrs.c
View File

@ -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