linux/include/net/gro.h
Alexander Lobakin 86af2c82c2 gro: add combined call_gro_receive() + INDIRECT_CALL_INET() helper
call_gro_receive() is used to limit GRO recursion, but it works only
with callback pointers.
There's a combined version of call_gro_receive() + INDIRECT_CALL_2()
in <net/inet_common.h>, but it doesn't check for IPv6 modularity.
Add a similar new helper to cover both of these. It can and will be
used to avoid retpoline overhead when IP header lies behind another
offloaded proto.

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-18 19:51:12 -07:00

26 lines
783 B
C

/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _NET_IPV6_GRO_H
#define _NET_IPV6_GRO_H
#include <linux/indirect_call_wrapper.h>
struct list_head;
struct sk_buff;
INDIRECT_CALLABLE_DECLARE(struct sk_buff *ipv6_gro_receive(struct list_head *,
struct sk_buff *));
INDIRECT_CALLABLE_DECLARE(int ipv6_gro_complete(struct sk_buff *, int));
INDIRECT_CALLABLE_DECLARE(struct sk_buff *inet_gro_receive(struct list_head *,
struct sk_buff *));
INDIRECT_CALLABLE_DECLARE(int inet_gro_complete(struct sk_buff *, int));
#define indirect_call_gro_receive_inet(cb, f2, f1, head, skb) \
({ \
unlikely(gro_recursion_inc_test(skb)) ? \
NAPI_GRO_CB(skb)->flush |= 1, NULL : \
INDIRECT_CALL_INET(cb, f2, f1, head, skb); \
})
#endif /* _NET_IPV6_GRO_H */