arc: make sure _start is in the beginning of .text section

[people/ms/u-boot.git] / include / net.h

diff --git a/include/net.h b/include/net.h
index 18d279ebe737da5ac87cf891d509b44efb1ece94..237c932be3341350f235c4debf9999ec5d487343 100644 (file)
--- a/include/net.h
+++ b/include/net.h
@@ -81,7 +81,7 @@ enum eth_state_t {
 struct eth_device {
        char name[16];
        unsigned char enetaddr[6];
-       int iobase;
+       phys_addr_t iobase;
        int state;
 
        int  (*init) (struct eth_device *, bd_t *);
@@ -191,6 +191,8 @@ struct ethernet_hdr {
 /* Ethernet header size */
 #define ETHER_HDR_SIZE (sizeof(struct ethernet_hdr))
 
+#define ETH_FCS_LEN    4               /* Octets in the FCS            */
+
 struct e802_hdr {
        uchar           et_dest[6];     /* Destination node             */
        uchar           et_src[6];      /* Source node                  */
@@ -482,9 +484,35 @@ extern void net_set_ip_header(uchar *pkt, IPaddr_t dest, IPaddr_t source);
 extern void net_set_udp_header(uchar *pkt, IPaddr_t dest, int dport,
                                int sport, int len);
 
-/* Checksum */
-extern int     NetCksumOk(uchar *, int);       /* Return true if cksum OK */
-extern uint    NetCksum(uchar *, int);         /* Calculate the checksum */
+/**
+ * compute_ip_checksum() - Compute IP checksum
+ *
+ * @addr:      Address to check (must be 16-bit aligned)
+ * @nbytes:    Number of bytes to check (normally a multiple of 2)
+ * @return 16-bit IP checksum
+ */
+unsigned compute_ip_checksum(const void *addr, unsigned nbytes);
+
+/**
+ * add_ip_checksums() - add two IP checksums
+ *
+ * @offset:    Offset of first sum (if odd we do a byte-swap)
+ * @sum:       First checksum
+ * @new_sum:   New checksum to add
+ * @return updated 16-bit IP checksum
+ */
+unsigned add_ip_checksums(unsigned offset, unsigned sum, unsigned new_sum);
+
+/**
+ * ip_checksum_ok() - check if a checksum is correct
+ *
+ * This works by making sure the checksum sums to 0
+ *
+ * @addr:      Address to check (must be 16-bit aligned)
+ * @nbytes:    Number of bytes to check (normally a multiple of 2)
+ * @return true if the checksum matches, false if not
+ */
+int ip_checksum_ok(const void *addr, unsigned nbytes);
 
 /* Callbacks */
 extern rxhand_f *net_get_udp_handler(void);    /* Get UDP RX packet handler */