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tcp: remove indirect calls for icsk->icsk_af_ops->send_check

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Mitigate RETPOLINE costs in __tcp_transmit_skb()
by using INDIRECT_CALL_INET() wrapper.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2020-06-20 17:47:53 -07:00
committed by David S. Miller
parent 05e22e8395
commit dd2e0b86fc
4 changed files with 14 additions and 10 deletions
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include/net/ip6_checksum.h
-9
View File
@@ -85,15 +85,6 @@ static inline void tcp_v6_gso_csum_prep(struct sk_buff *skb)
th->check = ~tcp_v6_check(0, &ipv6h->saddr, &ipv6h->daddr, 0);
}
#if IS_ENABLED(CONFIG_IPV6)
static inline void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb)
{
struct ipv6_pinfo *np = inet6_sk(sk);
__tcp_v6_send_check(skb, &np->saddr, &sk->sk_v6_daddr);
}
#endif
static inline __sum16 udp_v6_check(int len,
const struct in6_addr *saddr,
const struct in6_addr *daddr,
include/net/tcp.h
+3
View File
@@ -932,6 +932,9 @@ static inline int tcp_v6_sdif(const struct sk_buff *skb)
#endif
return 0;
}
INDIRECT_CALLABLE_DECLARE(void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb));
#endif
static inline bool inet_exact_dif_match(struct net *net, struct sk_buff *skb)