mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2024-12-25 00:14:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

dhcp: convert 'subnet_mask_given' to 'flags'

Browse Source 
Don't waste 7 bits (in preparation for more flags)
This commit is contained in:
Simon Goldschmidt 2021-03-04 22:16:19 +01:00
parent 18b1178e0c
commit c7e1b35899
2 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/core/ipv4/dhcp.c
View File

@ -673,9 +673,9 @@ dhcp_handle_ack(struct netif *netif, struct dhcp_msg *msg_in)
if (dhcp_option_given(dhcp, DHCP_OPTION_IDX_SUBNET_MASK)) {
/* remember given subnet mask */
ip4_addr_set_u32(&dhcp->offered_sn_mask, lwip_htonl(dhcp_get_option_value(dhcp, DHCP_OPTION_IDX_SUBNET_MASK)));
dhcp->subnet_mask_given = 1;
dhcp->flags |= DHCP_FLAG_SUBNET_MASK_GIVEN;
} else {
dhcp->subnet_mask_given = 0;
dhcp->flags &= ~DHCP_FLAG_SUBNET_MASK_GIVEN;
}
/* gateway router */
@ -1088,7 +1088,7 @@ dhcp_bind(struct netif *netif)
dhcp->t1_timeout = 0;
}
if (dhcp->subnet_mask_given) {
if (dhcp->flags & DHCP_FLAG_SUBNET_MASK_GIVEN) {
/* copy offered network mask */
ip4_addr_copy(sn_mask, dhcp->offered_sn_mask);
} else {

6
src/include/lwip/dhcp.h
View File

@ -62,6 +62,8 @@ extern "C" {
#define DHCP_BOOT_FILE_LEN 128U
#define DHCP_FLAG_SUBNET_MASK_GIVEN 0x01
/* AutoIP cooperation flags (struct dhcp.autoip_coop_state) */
typedef enum {
DHCP_AUTOIP_COOP_STATE_OFF = 0,
@ -78,8 +80,8 @@ struct dhcp
u8_t state;
/** retries of current request */
u8_t tries;
u8_t subnet_mask_given;
/** see DHCP_FLAG_* */
u8_t flags;
u16_t request_timeout; /* #ticks with period DHCP_FINE_TIMER_SECS for request timeout */
u16_t t1_timeout; /* #ticks with period DHCP_COARSE_TIMER_SECS for renewal time */