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authorJohn Fastabend <john.fastabend@gmail.com>2018-03-28 12:49:15 -0700
committerDaniel Borkmann <daniel@iogearbox.net>2018-03-30 00:09:43 +0200
commit8934ce2fd08171e8605f7fada91ee7619fe17ab8 (patch)
tree9a75574aadb3cfad15d09bffa0fe9eb6cbd9a03d /include/net
parent22527437e0a0c96ee3153e9d0382942b0fd4f9dd (diff)
downloadlinux-8934ce2fd08171e8605f7fada91ee7619fe17ab8.tar.bz2
bpf: sockmap redirect ingress support
Add support for the BPF_F_INGRESS flag in sk_msg redirect helper. To do this add a scatterlist ring for receiving socks to check before calling into regular recvmsg call path. Additionally, because the poll wakeup logic only checked the skb recv queue we need to add a hook in TCP stack (similar to write side) so that we have a way to wake up polling socks when a scatterlist is redirected to that sock. After this all that is needed is for the redirect helper to push the scatterlist into the psock receive queue. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/sock.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 709311132d4c..b8ff435fa96e 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1085,6 +1085,7 @@ struct proto {
#endif
bool (*stream_memory_free)(const struct sock *sk);
+ bool (*stream_memory_read)(const struct sock *sk);
/* Memory pressure */
void (*enter_memory_pressure)(struct sock *sk);
void (*leave_memory_pressure)(struct sock *sk);