Content-type: text/html Man page of net_ispartialchecksum

net_ispartialchecksum

Section: Kernel Functions for Drivers (9F)
Updated: 1 May 2008
Index Return to Main Contents
 

NAME

net_ispartialchecksum - indicate if a 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(9F).

mb

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

 

DESCRIPTION

The net_ispartialchecksum() function looks at the fields within the mblk structure to determine if the packet contained inside contains headers with only partial checksum values. Partial checksum values are stored inside headers when the calculation of the complete checksum is being handled by the hardware.  

RETURN VALUES

The net_ispartialchecksum() function returns:

-1

The network protocol does not support this function.

0

The packet does not contain partial checksums.

If a packet is marked for hardware checksum'ing, the following values 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 4 checksum calculated

 

CONTEXT

The net_ispartialchecksum() function may be called from user, kernel, or interrupt context.  

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE

AvailabilitySUNWcsu

Interface Stability

 

SEE ALSO

net_isvalidchecksum(9F), net_protocol_lookup(9F), attributes(5)


 

Index

NAME
SYNOPSIS
INTERFACE LEVEL
PARAMETERS
DESCRIPTION
RETURN VALUES
CONTEXT
ATTRIBUTES
SEE ALSO

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Time: 02:39:41 GMT, October 02, 2010