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

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Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
This commit is contained in:
Denys Vlasenko
2010-10-21 12:33:10 +02:00
parent 08187356d7
commit 0bb35e19a7
2 changed files with 14 additions and 5 deletions
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7
networking/udhcp/dhcpc.c
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@@ -432,6 +432,7 @@ static int raw_bcast_from_client_config_ifindex(struct dhcp_packet *packet)
}
/* 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 @@ static NOINLINE int send_discover(uint32_t xid, uint32_t requested)
/* 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 @@ static NOINLINE int send_select(uint32_t xid, uint32_t server, uint32_t requeste
}
/* 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 @@ static int send_renew(uint32_t xid, uint32_t server, uint32_t ciaddr)
#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 @@ static int send_release(uint32_t server, uint32_t ciaddr)
}
/* 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;