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udhcp: pass pointer to whole packet to "add option" functions

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This is needed for "overflow option" support

function                                             old     new   delta
udhcp_find_option                                      -      34     +34
udhcp_add_binary_option                               94     106     +12
write_leases                                         227     223      -4
udhcp_init_header                                     86      82      -4
send_release                                         104      99      -5
init_packet                                           87      81      -6
add_client_options                                   160     154      -6
add_server_options                                   100      92      -8
udhcpd_main                                         1964    1954     -10
udhcpc_main                                         2859    2837     -22
find_option                                           34       -     -34
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/8 up/down: 46/-99)            Total: -53 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2010-03-26 09:32:09 +01:00
parent a8f6b99987
commit 7724c766bd
8 changed files with 37 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
networking/udhcp/dhcpc.c
View File

@@ -319,22 +319,22 @@ static void init_packet(struct dhcp_packet *packet, char type)
udhcp_init_header(packet, type);
memcpy(packet->chaddr, client_config.client_mac, 6);
if (client_config.clientid)
udhcp_add_binary_option(packet->options, client_config.clientid);
udhcp_add_binary_option(packet, client_config.clientid);
if (client_config.hostname)
udhcp_add_binary_option(packet->options, client_config.hostname);
udhcp_add_binary_option(packet, client_config.hostname);
if (client_config.fqdn)
udhcp_add_binary_option(packet->options, client_config.fqdn);
udhcp_add_binary_option(packet, client_config.fqdn);
if (type != DHCPDECLINE
&& type != DHCPRELEASE
&& client_config.vendorclass
) {
udhcp_add_binary_option(packet->options, client_config.vendorclass);
udhcp_add_binary_option(packet, client_config.vendorclass);
}
}
static void add_client_options(struct dhcp_packet *packet)
{
/* Add am "param req" option with the list of options we'd like to have
/* Add a "param req" option with the list of options we'd like to have
* from stubborn DHCP servers. Pull the data from the struct in common.c.
* No bounds checking because it goes towards the head of the packet. */
uint8_t c;
@@ -361,7 +361,7 @@ static void add_client_options(struct dhcp_packet *packet)
{
struct option_set *curr = client_config.options;
while (curr) {
udhcp_add_binary_option(packet->options, curr->data);
udhcp_add_binary_option(packet, curr->data);
curr = curr->next;
}
// if (client_config.sname)
@@ -405,10 +405,10 @@ static int send_discover(uint32_t xid, uint32_t requested)
init_packet(&packet, DHCPDISCOVER);
packet.xid = xid;
if (requested)
udhcp_add_simple_option(packet.options, DHCP_REQUESTED_IP, requested);
udhcp_add_simple_option(&packet, DHCP_REQUESTED_IP, requested);
/* Explicitly saying that we want RFC-compliant packets helps
* some buggy DHCP servers to NOT send bigger packets */
udhcp_add_simple_option(packet.options, DHCP_MAX_SIZE, htons(576));
udhcp_add_simple_option(&packet, DHCP_MAX_SIZE, htons(576));
add_client_options(&packet);
bb_info_msg("Sending discover...");
@@ -426,8 +426,8 @@ static int send_select(uint32_t xid, uint32_t server, uint32_t requested)
init_packet(&packet, DHCPREQUEST);
packet.xid = xid;
udhcp_add_simple_option(packet.options, DHCP_REQUESTED_IP, requested);
udhcp_add_simple_option(packet.options, DHCP_SERVER_ID, server);
udhcp_add_simple_option(&packet, DHCP_REQUESTED_IP, requested);
udhcp_add_simple_option(&packet, DHCP_SERVER_ID, server);
add_client_options(&packet);
addr.s_addr = requested;
@@ -461,8 +461,8 @@ static int send_decline(uint32_t xid, uint32_t server, uint32_t requested)
init_packet(&packet, DHCPDECLINE);
packet.xid = xid;
udhcp_add_simple_option(packet.options, DHCP_REQUESTED_IP, requested);
udhcp_add_simple_option(packet.options, DHCP_SERVER_ID, server);
udhcp_add_simple_option(&packet, DHCP_REQUESTED_IP, requested);
udhcp_add_simple_option(&packet, DHCP_SERVER_ID, server);
bb_info_msg("Sending decline...");
return raw_bcast_from_client_config_ifindex(&packet);
@@ -478,7 +478,7 @@ static int send_release(uint32_t server, uint32_t ciaddr)
packet.xid = random_xid();
packet.ciaddr = ciaddr;
udhcp_add_simple_option(packet.options, DHCP_SERVER_ID, server);
udhcp_add_simple_option(&packet, DHCP_SERVER_ID, server);
bb_info_msg("Sending release...");
return udhcp_send_kernel_packet(&packet, ciaddr, CLIENT_PORT, server, SERVER_PORT);