xnu-1699.22.81.tar.gz

[apple/xnu.git] / bsd / sys / kpi_mbuf.h

diff --git a/bsd/sys/kpi_mbuf.h b/bsd/sys/kpi_mbuf.h
index e1558fa66ae30f6722328a5303caef7ab7d56f7e..24239b9f484862ff1ac81153018f7ff33327cf30 100644 (file)
--- a/bsd/sys/kpi_mbuf.h
+++ b/bsd/sys/kpi_mbuf.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2008-2010 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -55,6 +55,7 @@
        @constant MBUF_EXT Indicates this mbuf has external data.
        @constant MBUF_PKTHDR Indicates this mbuf has a packet header.
        @constant MBUF_EOR Indicates this mbuf is the end of a record.
+       @constant MBUF_LOOP Indicates this packet is looped back.
        @constant MBUF_BCAST Indicates this packet will be sent or was
                received as a brodcast.
        @constant MBUF_MCAST Indicates this packet will be sent or was
@@ -72,13 +73,15 @@ enum {
        MBUF_EXT        = 0x0001,       /* has associated external storage */
        MBUF_PKTHDR     = 0x0002,       /* start of record */
        MBUF_EOR        = 0x0004,       /* end of record */
+       MBUF_LOOP       = 0x0040,       /* packet is looped back */
 
        MBUF_BCAST      = 0x0100,       /* send/received as link-level broadcast */
        MBUF_MCAST      = 0x0200,       /* send/received as link-level multicast */
        MBUF_FRAG       = 0x0400,       /* packet is a fragment of a larger packet */
        MBUF_FIRSTFRAG  = 0x0800,       /* packet is first fragment */
        MBUF_LASTFRAG   = 0x1000,       /* packet is last fragment */
-       MBUF_PROMISC    = 0x2000        /* packet is promiscuous */
+       MBUF_PROMISC    = 0x2000,       /* packet is promiscuous */
+       MBUF_HASFCS     = 0x4000        /* packet has FCS */
 };
 typedef u_int32_t mbuf_flags_t;
 
@@ -145,6 +148,10 @@ typedef u_int32_t mbuf_type_t;
                calculated yet.
        @constant MBUF_CSUM_REQ_UDP Indicates the UDP checksum has not been
                calculated yet.
+       @constant MBUF_CSUM_REQ_TCPIPV6 Indicates the TCP checksum for IPv6
+                       has not been calculated yet.
+       @constant MBUF_CSUM_REQ_UDPIPV6 Indicates the UDP checksum for IPv6
+               has not been calculated yet.
 */
 enum {
        MBUF_TSO_IPV4           = 0x100000,
@@ -158,7 +165,9 @@ enum {
 #endif /* KERNEL_PRIVATE */
        MBUF_CSUM_REQ_IP        = 0x0001,
        MBUF_CSUM_REQ_TCP       = 0x0002,
-       MBUF_CSUM_REQ_UDP       = 0x0004
+       MBUF_CSUM_REQ_UDP       = 0x0004,
+       MBUF_CSUM_REQ_TCPIPV6   = 0x0020,
+       MBUF_CSUM_REQ_UDPIPV6   = 0x0040
 };
 typedef u_int32_t mbuf_csum_request_flags_t;
 
@@ -178,7 +187,7 @@ typedef u_int32_t mbuf_csum_request_flags_t;
                hardware should be passed as the second parameter of
                mbuf_set_csum_performed. The hardware calculated checksum value
                can be retrieved using the second parameter passed to
-               mbuf_get_csum_performed.
+               mbuf_get_csum_performed. This should be done for IPv4 or IPv6.
        @constant MBUF_CSUM_PSEUDO_HDR If set, this indicates that the
                checksum value for MBUF_CSUM_DID_DATA includes the pseudo header
                value. If this is not set, the stack will calculate the pseudo
@@ -1183,6 +1192,15 @@ extern u_int32_t mbuf_get_mlen(void);
  */
 extern u_int32_t mbuf_get_mhlen(void);
 
+/*!
+       @function mbuf_get_minclsize
+       @discussion This routine returns the minimum number of data bytes
+               before an external cluster is used.  This is equivalent to the
+               legacy MINCLSIZE macro.
+       @result The minimum number of bytes before a cluster will be used.
+ */
+extern u_int32_t mbuf_get_minclsize(void);
+
 /*!
        @function mbuf_clear_csum_performed
        @discussion Clears the hardware checksum flags and values.
@@ -1331,6 +1349,47 @@ extern void mbuf_tag_free(mbuf_t mbuf, mbuf_tag_id_t module_id,
 extern void mbuf_stats(struct mbuf_stat *stats);
 
 
+/*!
+       @enum mbuf_traffic_class_t
+       @abstract Traffic class of a packet
+       @discussion Property that represent the category of traffic of a packet. 
+               This information may be used by the driver and at the link level.
+       @constant MBUF_TC_BE Best effort, normal class.
+       @constant MBUF_TC_BK Background, low priority or bulk traffic.
+       @constant MBUF_TC_VI Interactive video, constant bit rate, low latency.
+       @constant MBUF_TC_VO Interactive voice, constant bit rate, lowest latency.
+*/
+typedef enum {
+#ifdef XNU_KERNEL_PRIVATE
+       MBUF_TC_UNSPEC  = -1,           /* Internal: not specified */
+#endif
+       MBUF_TC_BE              = 0,
+       MBUF_TC_BK              = 1,
+       MBUF_TC_VI              = 2,
+       MBUF_TC_VO              = 3
+#ifdef XNU_KERNEL_PRIVATE
+        ,
+       MBUF_TC_MAX             = 4     /* Internal: traffic class count */
+#endif
+} mbuf_traffic_class_t;
+
+/*!
+       @function mbuf_get_traffic_class
+       @discussion Get the traffic class of an mbuf packet
+       @param mbuf The mbuf to get the traffic class of.
+       @result The traffic class
+*/
+extern mbuf_traffic_class_t mbuf_get_traffic_class(mbuf_t mbuf);
+
+/*!
+       @function mbuf_set_traffic_class
+       @discussion Set the traffic class of an mbuf packet.
+       @param mbuf The mbuf to set the traffic class on.
+       @ac The traffic class
+       @result 0 on success, EINVAL if bad paramater is passed
+*/
+extern errno_t mbuf_set_traffic_class(mbuf_t mbuf, mbuf_traffic_class_t tc);
+
 /* IF_QUEUE interaction */
 
 #define IF_ENQUEUE_MBUF(ifq, m) {                                      \