xnu-517.7.7.tar.gz

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

diff --git a/bsd/sys/mbuf.h b/bsd/sys/mbuf.h
index 360b80d91e1848666f6fc85b9b2d2674a2d03798..94efd165ab5a1769ac25dd7add7532077d48f8da 100644 (file)
--- a/bsd/sys/mbuf.h
+++ b/bsd/sys/mbuf.h
@@ -125,10 +125,18 @@ struct    pkthdr {
        /* variables for ip and tcp reassembly */
        void    *header;                /* pointer to packet header */
         /* variables for hardware checksum */
+#ifdef KERNEL_PRIVATE
+       /* Note: csum_flags is used for hardware checksum and VLAN */
+#endif KERNEL_PRIVATE
         int     csum_flags;             /* flags regarding checksum */       
         int     csum_data;              /* data field used by csum routines */
        struct mbuf *aux;               /* extra data buffer; ipsec/others */
+#ifdef KERNEL_PRIVATE
+       u_short vlan_tag;               /* VLAN tag, host byte order */
+       u_short reserved_1;             /* for future use */
+#else KERNEL_PRIVATE
        void    *reserved1;             /* for future use */
+#endif KERNEL_PRIVATE
        void    *reserved2;             /* for future use */
 };
 
@@ -136,7 +144,7 @@ struct      pkthdr {
 /* description of external storage mapped into mbuf, valid if M_EXT set */
 struct m_ext {
        caddr_t ext_buf;                /* start of buffer */
-       void    (*ext_free)();          /* free routine if not the usual */
+       void    (*ext_free)(caddr_t , u_int, caddr_t);  /* free routine if not the usual */
        u_int   ext_size;               /* size of buffer, for ext_free */
        caddr_t ext_arg;                /* additional ext_free argument */
        struct  ext_refsq {             /* references held */
@@ -206,6 +214,16 @@ struct mbuf {
  
 #define CSUM_DELAY_DATA         (CSUM_TCP | CSUM_UDP)
 #define CSUM_DELAY_IP           (CSUM_IP)       /* XXX add ipv6 here too? */
+#ifdef KERNEL_PRIVATE
+/*
+ * Note: see also IF_HWASSIST_CSUM defined in <net/if_var.h>
+ */
+/* bottom 16 bits reserved for hardware checksum */
+#define CSUM_CHECKSUM_MASK     0xffff
+
+/* VLAN tag present */
+#define CSUM_VLAN_TAG_VALID    0x10000         /* vlan_tag field is valid */
+#endif KERNEL_PRIVATE
 
 
 /* mbuf types */