Kernel functions			net_ispartialchecksum(9F)



NAME
     net_ispartialchecksum - return an indication for whether  or
     not  this	packet	is  being scheduled for	hardware checksum
     calculation

SYNOPSIS
     #include <sys/neti.h>

     int net_ispartialchecksum(const net_data_t	net, mblk_t *mb);

INTERFACE LEVEL
     Solaris DDI specific (Solaris DDI)

PARAMETERS
     net

	 value	 returned   from    a	 successful    call    to
	 net_protocol_lookup.



     mb
	 mblk holding a	packet that is the subject of this query.



DESCRIPTION
     This function looks at  the  fields  within  mblk	structure
     passed  in	 to determine if the packet contained inside con-
     tains headers with	only partial  checksum	values.	  Partial
     checksums	are stored inside headers when the calculation of
     the complete checksum is being handled by the hardware.

RETURN VALUES
     This interface returns "-1" if it is not  supported  by  the
     network  protocol,	 0 if the packet does not contain partial
     checksums.	  Where	 a  packet   is	  marked   for	 hardware
     checksum'ing, the following value are returned:
     NET_HCK_L3_FULL - Complete	layer 3	checksum calculated
     NET_HCK_L3_PART - Partial layer 3 checksum	calculated
     NET_HCK_L4_FULL - Complete	layer 4	checksum calculated
     NET_HCK_L4_PART - Partial layer 3 checksum	calculated


ATTRIBUTES
     See attributes(5) for descriptions	of the	following  attri-
     butes:
	  ____________________________________________________________
	 |	 ATTRIBUTE TYPE	       |       ATTRIBUTE VALUE	     |
	 |_____________________________|_____________________________|
	 | Interface Stability	       |	 Committed	     |
	 |_____________________________|_____________________________|



SunOS 5.10	   Last	change:	25 March 2008			1






Kernel functions			net_ispartialchecksum(9F)



SEE ALSO
     net_isvalidcksum(9f)





















































SunOS 5.10	   Last	change:	25 March 2008			2