diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2018-12-14 13:51:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-12-16 00:23:02 +0300 |
| commit | aaa5d90b395a72faff797b00d815165ee0e664c0 (patch) | |
| tree | 1200ce4b331921a7ae77964b525c4a3502b726a0 /net/core/dev.c | |
| parent | 283c16a2dfd332bf5610c874f7b9f9c8b601ce53 (diff) | |
| download | linux-aaa5d90b395a72faff797b00d815165ee0e664c0.tar.xz | |
net: use indirect call wrappers at GRO network layer
This avoids an indirect calls for L3 GRO receive path, both
for ipv4 and ipv6, if the latter is not compiled as a module.
Note that when IPv6 is compiled as builtin, it will be checked first,
so we have a single additional compare for the more common path.
v1 -> v2:
- adapted to INDIRECT_CALL_ changes
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index ed9aa4a91f1f..1b5a4410be0e 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -145,6 +145,7 @@ #include <linux/sctp.h> #include <net/udp_tunnel.h> #include <linux/net_namespace.h> +#include <linux/indirect_call_wrapper.h> #include "net-sysfs.h" @@ -5338,6 +5339,8 @@ static void flush_all_backlogs(void) put_online_cpus(); } +INDIRECT_CALLABLE_DECLARE(int inet_gro_complete(struct sk_buff *, int)); +INDIRECT_CALLABLE_DECLARE(int ipv6_gro_complete(struct sk_buff *, int)); static int napi_gro_complete(struct sk_buff *skb) { struct packet_offload *ptype; @@ -5357,7 +5360,9 @@ static int napi_gro_complete(struct sk_buff *skb) if (ptype->type != type || !ptype->callbacks.gro_complete) continue; - err = ptype->callbacks.gro_complete(skb, 0); + err = INDIRECT_CALL_INET(ptype->callbacks.gro_complete, + ipv6_gro_complete, inet_gro_complete, + skb, 0); break; } rcu_read_unlock(); @@ -5504,6 +5509,10 @@ static void gro_flush_oldest(struct list_head *head) napi_gro_complete(oldest); } +INDIRECT_CALLABLE_DECLARE(struct sk_buff *inet_gro_receive(struct list_head *, + struct sk_buff *)); +INDIRECT_CALLABLE_DECLARE(struct sk_buff *ipv6_gro_receive(struct list_head *, + struct sk_buff *)); static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb) { u32 hash = skb_get_hash_raw(skb) & (GRO_HASH_BUCKETS - 1); @@ -5553,7 +5562,9 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff NAPI_GRO_CB(skb)->csum_valid = 0; } - pp = ptype->callbacks.gro_receive(gro_head, skb); + pp = INDIRECT_CALL_INET(ptype->callbacks.gro_receive, + ipv6_gro_receive, inet_gro_receive, + gro_head, skb); break; } rcu_read_unlock(); |