passt: Introduce packet batching mechanism

Receive packets in batches from AF_UNIX, check if they can be sent
with a single syscall, and batch them up with sendmmsg() in case.

A bit rudimentary, currently only implemented for UDP, but it seems
to work.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/icmp.h b/icmp.h
index 7820fbe..9d26050 100644
--- a/icmp.h
+++ b/icmp.h
@@ -4,7 +4,8 @@
 struct ctx;
 
 void icmp_sock_handler(struct ctx *c, int s, uint32_t events);
-void icmp_tap_handler(struct ctx *c, int af, void *addr, char *in, size_t len);
+int icmp_tap_handler(struct ctx *c, int af, void *addr,
+		     struct tap_msg *msg, int count);
 int icmp_sock_init(struct ctx *c);
 
 /**