Displaying 1 result from an estimated 1 matches for "options_pad".
2011 Jul 18
2
ipconfig:About the length of 'options' field of DHCP packet
...[4] = optional vendor class */
/* [5] = optional hostname */
/* [6] = {dhcp_end, sizeof(dhcp_end)} */
+ /* [7] = optional padding */
};
/*
@@ -167,6 +169,7 @@ static int dhcp_send(struct netdev *dev, struct iovec *vec)
{
struct bootp_hdr bootp;
char dhcp_hostname[SYS_NMLN+2];
+ uint8_t options_padding[64];
int i = 4;
memset(&bootp, 0, sizeof(struct bootp_hdr));
@@ -212,6 +215,25 @@ static int dhcp_send(struct netdev *dev, struct iovec *vec)
vec[i].iov_base = dhcp_end;
vec[i].iov_len = sizeof(dhcp_end);
+
+ if(dev->bootp.fail_count & 1){
+ /*
+ * Append padding if...