mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2024-11-18 20:10:53 +00:00
Code Issues Packages Projects Releases Wiki Activity

dhcp: Set hostname for DISCOVER packets

Browse Source 
If the hostname is not set in the DISCOVER packet, then some servers might
issue an OFFER with hostname configured and consequently reject the REQUEST
with any other hostname.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Co-Authored-By: Simon Goldschmidt <goldsimon@gmx.de>
This commit is contained in:
Logan Gunthorpe 2019-11-18 16:58:04 -07:00 committed by Simon Goldschmidt
parent 5231c8da23
commit 90b2a6b4c4
2 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/core/ipv4/dhcp.c
View File

@ -1031,6 +1031,10 @@ dhcp_discover(struct netif *netif)
options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_MAX_MSG_SIZE, DHCP_OPTION_MAX_MSG_SIZE_LEN); options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_MAX_MSG_SIZE, DHCP_OPTION_MAX_MSG_SIZE_LEN);
options_out_len = dhcp_option_short(options_out_len, msg_out->options, DHCP_MAX_MSG_LEN(netif)); options_out_len = dhcp_option_short(options_out_len, msg_out->options, DHCP_MAX_MSG_LEN(netif));
#if LWIP_NETIF_HOSTNAME && LWIP_DHCP_DISCOVER_ADD_HOSTNAME
options_out_len = dhcp_option_hostname(options_out_len, msg_out->options, netif);
#endif /* LWIP NETIF HOSTNAME && LWIP_DHCP_DISCOVER_ADD_HOSTNAME */
options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_PARAMETER_REQUEST_LIST, LWIP_ARRAYSIZE(dhcp_discover_request_options)); options_out_len = dhcp_option(options_out_len, msg_out->options, DHCP_OPTION_PARAMETER_REQUEST_LIST, LWIP_ARRAYSIZE(dhcp_discover_request_options));
for (i = 0; i < LWIP_ARRAYSIZE(dhcp_discover_request_options); i++) { for (i = 0; i < LWIP_ARRAYSIZE(dhcp_discover_request_options); i++) {
options_out_len = dhcp_option_byte(options_out_len, msg_out->options, dhcp_discover_request_options[i]); options_out_len = dhcp_option_byte(options_out_len, msg_out->options, dhcp_discover_request_options[i]);

8
src/include/lwip/opt.h
View File

@ -966,6 +966,14 @@
#if !defined LWIP_DHCP_MAX_DNS_SERVERS || defined __DOXYGEN__ #if !defined LWIP_DHCP_MAX_DNS_SERVERS || defined __DOXYGEN__
#define LWIP_DHCP_MAX_DNS_SERVERS DNS_MAX_SERVERS #define LWIP_DHCP_MAX_DNS_SERVERS DNS_MAX_SERVERS
#endif #endif
/** LWIP_DHCP_DISCOVER_ADD_HOSTNAME: Set to 1 to include hostname opt in discover packets.
* If the hostname is not set in the DISCOVER packet, then some servers might issue an OFFER with hostname
* configured and consequently reject the REQUEST with any other hostname.
*/
#if !defined LWIP_DHCP_DISCOVER_ADD_HOSTNAME || defined __DOXYGEN__
#define LWIP_DHCP_DISCOVER_ADD_HOSTNAME 0
#endif /* LWIP_DHCP_DISCOVER_ADD_HOSTNAME */
/** /**
* @} * @}
*/ */