udhcpd: reduce stack usage by ~700 bytes. +28 bytes code size

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c
index 043220de9..f0878652c 100644
--- a/networking/udhcp/dhcpd.c
+++ b/networking/udhcp/dhcpd.c
@@ -132,7 +132,8 @@ static uint32_t select_lease_time(struct dhcp_packet *packet)
 }
 
 /* We got a DHCP DISCOVER. Send an OFFER. */
-static void send_offer(struct dhcp_packet *oldpacket, uint32_t static_lease_nip, struct dyn_lease *lease)
+/* NOINLINE: limit stack usage in caller */
+static NOINLINE void send_offer(struct dhcp_packet *oldpacket, uint32_t static_lease_nip, struct dyn_lease *lease)
 {
         struct dhcp_packet packet;
         uint32_t lease_time_sec;
@@ -202,7 +203,8 @@ static void send_offer(struct dhcp_packet *oldpacket, uint32_t static_lease_nip,
         send_packet(&packet, /*force_bcast:*/ 0);
 }
 
-static void send_NAK(struct dhcp_packet *oldpacket)
+/* NOINLINE: limit stack usage in caller */
+static NOINLINE void send_NAK(struct dhcp_packet *oldpacket)
 {
         struct dhcp_packet packet;
 
@@ -212,7 +214,8 @@ static void send_NAK(struct dhcp_packet *oldpacket)
         send_packet(&packet, /*force_bcast:*/ 1);
 }
 
-static void send_ACK(struct dhcp_packet *oldpacket, uint32_t yiaddr)
+/* NOINLINE: limit stack usage in caller */
+static NOINLINE void send_ACK(struct dhcp_packet *oldpacket, uint32_t yiaddr)
 {
         struct dhcp_packet packet;
         uint32_t lease_time_sec;
@@ -243,7 +246,8 @@ static void send_ACK(struct dhcp_packet *oldpacket, uint32_t yiaddr)
         }
 }
 
-static void send_inform(struct dhcp_packet *oldpacket)
+/* NOINLINE: limit stack usage in caller */
+static NOINLINE void send_inform(struct dhcp_packet *oldpacket)
 {
         struct dhcp_packet packet;