diff options
Diffstat (limited to 'net/ipv4/ipconfig.c')
| -rw-r--r-- | net/ipv4/ipconfig.c | 89 |
1 files changed, 42 insertions, 47 deletions
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c index 019408d3ca2c..b1e1be00ff8b 100644 --- a/net/ipv4/ipconfig.c +++ b/net/ipv4/ipconfig.c @@ -679,8 +679,18 @@ static const u8 ic_bootp_cookie[4] = { 99, 130, 83, 99 }; static void __init ic_dhcp_init_options(u8 *options, struct ic_device *d) { - u8 mt = ((ic_servaddr == NONE) - ? DHCPDISCOVER : DHCPREQUEST); + static const u8 ic_req_params[] = { + 1, /* Subnet mask */ + 3, /* Default gateway */ + 6, /* DNS server */ + 12, /* Host name */ + 15, /* Domain name */ + 17, /* Boot path */ + 26, /* MTU */ + 40, /* NIS domain name */ + 42, /* NTP servers */ + }; + u8 mt = (ic_servaddr == NONE) ? DHCPDISCOVER : DHCPREQUEST; u8 *e = options; int len; @@ -705,51 +715,36 @@ ic_dhcp_init_options(u8 *options, struct ic_device *d) e += 4; } - /* always? */ - { - static const u8 ic_req_params[] = { - 1, /* Subnet mask */ - 3, /* Default gateway */ - 6, /* DNS server */ - 12, /* Host name */ - 15, /* Domain name */ - 17, /* Boot path */ - 26, /* MTU */ - 40, /* NIS domain name */ - 42, /* NTP servers */ - }; - - *e++ = 55; /* Parameter request list */ - *e++ = sizeof(ic_req_params); - memcpy(e, ic_req_params, sizeof(ic_req_params)); - e += sizeof(ic_req_params); - - if (ic_host_name_set) { - *e++ = 12; /* host-name */ - len = strlen(utsname()->nodename); - *e++ = len; - memcpy(e, utsname()->nodename, len); - e += len; - } - if (*vendor_class_identifier) { - pr_info("DHCP: sending class identifier \"%s\"\n", - vendor_class_identifier); - *e++ = 60; /* Class-identifier */ - len = strlen(vendor_class_identifier); - *e++ = len; - memcpy(e, vendor_class_identifier, len); - e += len; - } - len = strlen(dhcp_client_identifier + 1); - /* the minimum length of identifier is 2, include 1 byte type, - * and can not be larger than the length of options - */ - if (len >= 1 && len < 312 - (e - options) - 1) { - *e++ = 61; - *e++ = len + 1; - memcpy(e, dhcp_client_identifier, len + 1); - e += len + 1; - } + *e++ = 55; /* Parameter request list */ + *e++ = sizeof(ic_req_params); + memcpy(e, ic_req_params, sizeof(ic_req_params)); + e += sizeof(ic_req_params); + + if (ic_host_name_set) { + *e++ = 12; /* host-name */ + len = strlen(utsname()->nodename); + *e++ = len; + memcpy(e, utsname()->nodename, len); + e += len; + } + if (*vendor_class_identifier) { + pr_info("DHCP: sending class identifier \"%s\"\n", + vendor_class_identifier); + *e++ = 60; /* Class-identifier */ + len = strlen(vendor_class_identifier); + *e++ = len; + memcpy(e, vendor_class_identifier, len); + e += len; + } + len = strlen(dhcp_client_identifier + 1); + /* the minimum length of identifier is 2, include 1 byte type, + * and can not be larger than the length of options + */ + if (len >= 1 && len < 312 - (e - options) - 1) { + *e++ = 61; + *e++ = len + 1; + memcpy(e, dhcp_client_identifier, len + 1); + e += len + 1; } *e++ = 255; /* End of the list */ |