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authorPaolo Abeni <pabeni@redhat.com>2018-12-14 13:51:59 +0300
committerDavid S. Miller <davem@davemloft.net>2018-12-16 00:23:02 +0300
commit028e0a4766844e7eeb31b93479ea6dd40cfc2895 (patch)
tree4a2e159b4ddfe4548de2b003bae3ca7d15f6a11b /include/net/inet_common.h
parentaaa5d90b395a72faff797b00d815165ee0e664c0 (diff)
downloadlinux-028e0a4766844e7eeb31b93479ea6dd40cfc2895.tar.xz
net: use indirect call wrappers at GRO transport layer
This avoids an indirect call in the receive path for TCP and UDP packets. TCP takes precedence on UDP, so that we have a single additional conditional in the common case. When IPV6 is build as module, all gro symbols except UDPv6 are builtin, while the latter belong to the ipv6 module, so we need some special care. v1 -> v2: - adapted to INDIRECT_CALL_ changes v2 -> v3: - fix build issue with CONFIG_IPV6=m Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/inet_common.h')
-rw-r--r--include/net/inet_common.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/inet_common.h b/include/net/inet_common.h
index 56e7592811ea..975901a95c0f 100644
--- a/include/net/inet_common.h
+++ b/include/net/inet_common.h
@@ -56,4 +56,11 @@ static inline void inet_ctl_sock_destroy(struct sock *sk)
sock_release(sk->sk_socket);
}
+#define indirect_call_gro_receive(f2, f1, cb, head, skb) \
+({ \
+ unlikely(gro_recursion_inc_test(skb)) ? \
+ NAPI_GRO_CB(skb)->flush |= 1, NULL : \
+ INDIRECT_CALL_2(cb, f2, f1, head, skb); \
+})
+
#endif