Previous cleanups mean that tcp_sock_init4() and tcp_sock_init6() are
almost identical, and the remaining differences can be easily
parameterized. Combine both into a single tcp_sock_init_af() function.
Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
tcp.c | 50 +++++++++++++++-----------------------------------
1 file changed, 15 insertions(+), 35 deletions(-)
diff --git a/tcp.c b/tcp.c
index fca5df4..616b9d0 100644
--- a/tcp.c
+++ b/tcp.c
@@ -2973,52 +2973,32 @@ void tcp_sock_handler(struct ctx *c, union epoll_ref ref, uint32_t
events,
}
/**
- * tcp_sock_init4() - Initialise listening sockets for a given IPv4 port
+ * tcp_sock_init_af() - Initialise listening socket for a given af and port
* @c: Execution context
+ * @af: Address family to listen on
+ * @port: Port, host order
* @addr: Pointer to address for binding, NULL if not configured
* @ifname: Name of interface to bind to, NULL if not configured
- * @port: Port, host order
+ *
+ * Return: fd for the new listening socket, or -1 on failure
*/
-static void tcp_sock_init4(const struct ctx *c, const struct in_addr *addr,
- const char *ifname, in_port_t port)
+static int tcp_sock_init_af(const struct ctx *c, int af, in_port_t port,
+ const struct in_addr *addr, const char *ifname)
{
in_port_t idx = port + c->tcp.fwd_in.delta[port];
union tcp_epoll_ref tref = { .tcp.listen = 1, .tcp.index = idx };
int s;
- s = sock_l4(c, AF_INET, IPPROTO_TCP, addr, ifname, port, tref.u32);
- if (s >= 0)
- tcp_sock_set_bufsize(c, s);
- else
- s = -1;
+ s = sock_l4(c, af, IPPROTO_TCP, addr, ifname, port, tref.u32);
if (c->tcp.fwd_in.mode == FWD_AUTO)
- tcp_sock_init_ext[port][V4] = s;
-}
+ tcp_sock_init_ext[port][(af == AF_INET) ? V4 : V6] = s;
-/**
- * tcp_sock_init6() - Initialise listening sockets for a given IPv6 port
- * @c: Execution context
- * @addr: Pointer to address for binding, NULL if not configured
- * @ifname: Name of interface to bind to, NULL if not configured
- * @port: Port, host order
- */
-static void tcp_sock_init6(const struct ctx *c,
- const struct in6_addr *addr, const char *ifname,
- in_port_t port)
-{
- in_port_t idx = port + c->tcp.fwd_in.delta[port];
- union tcp_epoll_ref tref = { .tcp.listen = 1, .tcp.index = idx };
- int s;
-
- s = sock_l4(c, AF_INET6, IPPROTO_TCP, addr, ifname, port, tref.u32);
- if (s >= 0)
- tcp_sock_set_bufsize(c, s);
- else
- s = -1;
+ if (s < 0)
+ return -1;
- if (c->tcp.fwd_in.mode == FWD_AUTO)
- tcp_sock_init_ext[port][V6] = s;
+ tcp_sock_set_bufsize(c, s);
+ return s;
}
/**
@@ -3033,9 +3013,9 @@ void tcp_sock_init(const struct ctx *c, sa_family_t af, const void
*addr,
const char *ifname, in_port_t port)
{
if ((af == AF_INET || af == AF_UNSPEC) && c->ifi4)
- tcp_sock_init4(c, addr, ifname, port);
+ tcp_sock_init_af(c, AF_INET, port, addr, ifname);
if ((af == AF_INET6 || af == AF_UNSPEC) && c->ifi6)
- tcp_sock_init6(c, addr, ifname, port);
+ tcp_sock_init_af(c, AF_INET6, port, addr, ifname);
}
/**
--
2.38.1