udhcpd: reduce stack usage by ~700 bytes. +28 bytes code size
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index cef0ab9..78aabed 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -432,6 +432,7 @@
}
/* Broadcast a DHCP discover packet to the network, with an optionally requested IP */
+/* NOINLINE: limit stack usage in caller */
static NOINLINE int send_discover(uint32_t xid, uint32_t requested)
{
struct dhcp_packet packet;
@@ -460,6 +461,7 @@
/* RFC 2131 3.1 paragraph 3:
* "The client _broadcasts_ a DHCPREQUEST message..."
*/
+/* NOINLINE: limit stack usage in caller */
static NOINLINE int send_select(uint32_t xid, uint32_t server, uint32_t requested)
{
struct dhcp_packet packet;
@@ -500,7 +502,8 @@
}
/* Unicast or broadcast a DHCP renew message */
-static int send_renew(uint32_t xid, uint32_t server, uint32_t ciaddr)
+/* NOINLINE: limit stack usage in caller */
+static NOINLINE int send_renew(uint32_t xid, uint32_t server, uint32_t ciaddr)
{
struct dhcp_packet packet;
@@ -543,6 +546,7 @@
#if ENABLE_FEATURE_UDHCPC_ARPING
/* Broadcast a DHCP decline message */
+/* NOINLINE: limit stack usage in caller */
static NOINLINE int send_decline(uint32_t xid, uint32_t server, uint32_t requested)
{
struct dhcp_packet packet;
@@ -588,6 +592,7 @@
}
/* Returns -1 on errors that are fatal for the socket, -2 for those that aren't */
+/* NOINLINE: limit stack usage in caller */
static NOINLINE int udhcp_recv_raw_packet(struct dhcp_packet *dhcp_pkt, int fd)
{
int bytes;