Now that we've delayed initialization of the UDP specific "reverse" map
until udp_init(), the only difference between the various 'remap' functions
used in conf_ports() is which array they target. So, simplify by open
coding the logic into conf_ports() with a pointer to the correct mapping
array.
Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
conf.c | 14 +++++++-------
tcp.c | 22 ----------------------
tcp.h | 2 --
udp.c | 22 ----------------------
udp.h | 2 --
5 files changed, 7 insertions(+), 55 deletions(-)
diff --git a/conf.c b/conf.c
index f74a32f..c7c2cee 100644
--- a/conf.c
+++ b/conf.c
@@ -120,24 +120,24 @@ static int conf_ports(struct ctx *c, char optname, const char
*optarg,
{
int start_src, end_src, start_dst, end_dst, exclude_only = 1, i, port;
char addr_buf[sizeof(struct in6_addr)] = { 0 }, *addr = addr_buf;
- void (*remap)(struct ctx *c, in_port_t port, in_port_t delta);
char buf[BUFSIZ], *sep, *spec, *p;
port_fwd_map exclude = { 0 };
sa_family_t af = AF_UNSPEC;
+ in_port_t *delta;
uint8_t *map;
if (optname == 't') {
map = c->tcp.fwd_in.map;
- remap = tcp_remap_to_tap;
+ delta = c->tcp.fwd_in.delta;
} else if (optname == 'T') {
map = c->tcp.fwd_out.map;
- remap = tcp_remap_to_init;
+ delta = c->tcp.fwd_out.delta;
} else if (optname == 'u') {
map = c->udp.fwd_in.f.map;
- remap = udp_remap_to_tap;
+ delta = c->udp.fwd_in.f.delta;
} else if (optname == 'U') {
map = c->udp.fwd_out.f.map;
- remap = udp_remap_to_init;
+ delta = c->udp.fwd_out.f.delta;
} else { /* For gcc -O3 */
return 0;
}
@@ -365,8 +365,8 @@ static int conf_ports(struct ctx *c, char optname, const char
*optarg,
if (start_dst != -1) {
/* 80:8080 or 22-80:8080:8080 */
- remap(c, i, (in_port_t)(start_dst -
- start_src));
+ delta[i] = (in_port_t)(start_dst -
+ start_src);
}
if (optname == 't')
diff --git a/tcp.c b/tcp.c
index e44177f..509a0b3 100644
--- a/tcp.c
+++ b/tcp.c
@@ -948,28 +948,6 @@ static void conn_event_do(const struct ctx *c, struct tcp_conn
*conn,
conn_event_do(c, conn, event); \
} while (0)
-/**
- * tcp_remap_to_tap() - Set delta for port translation toward guest/tap
- * @c: Execution context
- * @port: Original destination port, host order
- * @delta: Delta to be added to original destination port
- */
-void tcp_remap_to_tap(struct ctx *c, in_port_t port, in_port_t delta)
-{
- c->tcp.fwd_in.delta[port] = delta;
-}
-
-/**
- * tcp_remap_to_tap() - Set delta for port translation toward init namespace
- * @c: Execution context
- * @port: Original destination port, host order
- * @delta: Delta to be added to original destination port
- */
-void tcp_remap_to_init(struct ctx *c, in_port_t port, in_port_t delta)
-{
- c->tcp.fwd_out.delta[port] = delta;
-}
-
/**
* tcp_rtt_dst_low() - Check if low RTT was seen for connection endpoint
* @conn: Connection pointer
diff --git a/tcp.h b/tcp.h
index 502b096..2548d4d 100644
--- a/tcp.h
+++ b/tcp.h
@@ -29,8 +29,6 @@ void tcp_defer_handler(struct ctx *c);
void tcp_sock_set_bufsize(const struct ctx *c, int s);
void tcp_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s,
const uint32_t *ip_da);
-void tcp_remap_to_tap(struct ctx *c, in_port_t port, in_port_t delta);
-void tcp_remap_to_init(struct ctx *c, in_port_t port, in_port_t delta);
/**
* union tcp_epoll_ref - epoll reference portion for TCP connections
diff --git a/udp.c b/udp.c
index eb32dda..d17b3b4 100644
--- a/udp.c
+++ b/udp.c
@@ -258,28 +258,6 @@ static struct mmsghdr udp_mmh_send [UDP_SPLICE_FRAMES];
static struct iovec udp_iov_sendto [UDP_SPLICE_FRAMES];
static struct mmsghdr udp_mmh_sendto [UDP_SPLICE_FRAMES];
-/**
- * udp_remap_to_tap() - Set delta for port translation to/from guest/tap
- * @c: Execution context
- * @port: Original destination port, host order
- * @delta: Delta to be added to original destination port
- */
-void udp_remap_to_tap(struct ctx *c, in_port_t port, in_port_t delta)
-{
- c->udp.fwd_in.f.delta[port] = delta;
-}
-
-/**
- * udp_remap_to_init() - Set delta for port translation to/from init namespace
- * @c: Execution context
- * @port: Original destination port, host order
- * @delta: Delta to be added to original destination port
- */
-void udp_remap_to_init(struct ctx *c, in_port_t port, in_port_t delta)
-{
- c->udp.fwd_out.f.delta[port] = delta;
-}
-
/**
* udp_invert_portmap() - Compute reverse port translations for return packets
* @fwd: Port forwarding configuration to compute reverse map for
diff --git a/udp.h b/udp.h
index 25422b6..bc7b259 100644
--- a/udp.h
+++ b/udp.h
@@ -18,8 +18,6 @@ int udp_init(struct ctx *c);
void udp_timer(struct ctx *c, const struct timespec *ts);
void udp_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s,
const uint32_t *ip_da);
-void udp_remap_to_tap(struct ctx *c, in_port_t port, in_port_t delta);
-void udp_remap_to_init(struct ctx *c, in_port_t port, in_port_t delta);
/**
* union udp_epoll_ref - epoll reference portion for TCP connections
--
2.37.3