On Sun, 2014-03-16 at 12:24 -0700, Joe Perches wrote:
> > @@ -551,28 +583,41 @@ static void gdm_lte_netif_rx(struct net_device *dev,
> > char *buf, int len, int fla
> []
> > struct dhcp_packet {
>
> This one would be better fixed by moving the struct definition
> out of this function altogether.
>
> > u8 op; /* BOOTREQUEST or BOOTREPLY */
> > - u8 htype; /* hardware address type. 1 = 10mb
> > ethernet */
> > + u8 htype; /* hardware address type.
> > + 1 = 10mb ethernet */
> > u8 hlen; /* hardware address length */
> > u8 hops; /* used by relay agents only */
> > u32 xid; /* unique id */
> > - u16 secs; /* elapsed since client began
> > acquisition/renewal */
> > + u16 secs; /* elapsed since client began
> > + acquisition/renewal */
> > u16 flags; /* only one flag so far: */
> > - #define BROADCAST_FLAG 0x8000 /* "I need
> > broadcast replies" */
> > - u32 ciaddr; /* client IP (if client is in
> > BOUND, RENEW or REBINDING state) */
> > + #define BROADCAST_FLAG 0x8000 /* "I need
> > + broadcast
> > + replies" */
> > + u32 ciaddr; /* client IP (if client is in
> > + BOUND, RENEW or REBINDING
> > + state) */
> > u32 yiaddr; /* 'your' (client) IP address */
> > - /* IP address of next server to use in
> > bootstrap, returned in DHCPOFFER, DHCPACK by server */
> > + /* IP address of next server to use in
> > + * bootstrap, returned in DHCPOFFER, DHCPACK by
> > + * server */
> > u32 siaddr_nip;
> > u32 gateway_nip; /* relay agent IP address */
> > - u8 chaddr[16]; /* link-layer client hardware
> > address (MAC) */
> > + u8 chaddr[16]; /* link-layer client hardware
> > + address (MAC) */
> > u8 sname[64]; /* server host name (ASCIZ) */
> > u8 file[128]; /* boot file name (ASCIZ) */
> > - u32 cookie; /* fixed first four option
> > bytes (99,130,83,99 dec) */
> > + u32 cookie; /* fixed first four option
> > + bytes (99,130,83,99 dec) */
> > } __packed;
Also, the net/ipv4/ipconfig.c definition
seems a lot more sensible as it uses endian
specific types
struct bootp_pkt { /* BOOTP packet format */
struct iphdr iph; /* IP header */
struct udphdr udph; /* UDP header */
u8 op; /* 1=request, 2=reply */
u8 htype; /* HW address type */
u8 hlen; /* HW address length */
u8 hops; /* Used only by gateways */
__be32 xid; /* Transaction ID */
__be16 secs; /* Seconds since we started */
__be16 flags; /* Just what it says */
__be32 client_ip; /* Client's IP address if known */
__be32 your_ip; /* Assigned IP address */
__be32 server_ip; /* (Next, e.g. NFS) Server's IP address
*/
__be32 relay_ip; /* IP address of BOOTP relay */
u8 hw_addr[16]; /* Client's HW address */
u8 serv_name[64]; /* Server host name */
u8 boot_file[128]; /* Name of boot file */
u8 exten[312]; /* DHCP options / BOOTP vendor extensions */
};
It'd probably be better to make that struct definition public
and use it instead.
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