xnu-2782.1.97.tar.gz

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

diff --git a/bsd/sys/mbuf.h b/bsd/sys/mbuf.h
index 8a849338b8d6f4035e72956a4c0a81cea08120fd..5a7913ea89417220c8a5b2a56b7035677bb0e0ea 100644 (file)
--- a/bsd/sys/mbuf.h
+++ b/bsd/sys/mbuf.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999-2013 Apple Inc. All rights reserved.
+ * Copyright (c) 1999-2014 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  *
@@ -255,14 +255,6 @@ struct tcp_mtag {
        };
 };
 
-/*
- * IPSec mbuf tag
- */
-struct ipsec_mtag {
-       uint32_t policy_id;
-#define        ipsec_policy    proto_mtag.__pr_u.ipsec.policy_id
-};
-
 /*
  * Protocol specific mbuf tag (at most one protocol metadata per mbuf).
  *
@@ -274,10 +266,17 @@ struct ipsec_mtag {
 struct proto_mtag {
        union {
                struct tcp_mtag tcp;            /* TCP specific */
-               struct ipsec_mtag ipsec;        /* IPSec specific */
        } __pr_u;
 };
 
+/*
+ * NECP specific mbuf tag.
+ */
+struct necp_mtag {
+       uint32_t        necp_policy_id;
+       uint32_t        necp_last_interface_index;
+};
+
 /*
  * Record/packet header in first mbuf of chain; valid only if M_PKTHDR set.
  */
@@ -355,12 +354,14 @@ struct    pkthdr {
 #if MEASURE_BW
        u_int64_t pkt_bwseq;            /* sequence # */
 #endif /* MEASURE_BW */
+       u_int64_t pkt_enqueue_ts;       /* enqueue time */
        /*
         * Tags (external and built-in)
         */
        SLIST_HEAD(packet_tags, m_tag) tags; /* list of external tags */
        struct proto_mtag proto_mtag;   /* built-in protocol-specific tag */
        struct pf_mtag  pf_mtag;        /* built-in PF tag */
+       struct necp_mtag necp_mtag; /* built-in NECP tag */
        /*
         * Module private scratch space (32-bit aligned), currently 16-bytes
         * large.  Anything stored here is not guaranteed to survive across
@@ -433,6 +434,8 @@ struct      pkthdr {
 #define        PKTF_IFAINFO            0x4000  /* pkt has valid interface addr info */
 #define        PKTF_SO_BACKGROUND      0x8000  /* data is from background source */
 #define        PKTF_FORWARDED          0x10000 /* pkt was forwarded from another i/f */
+#define        PKTF_PRIV_GUARDED       0x20000 /* pkt_mpriv area guard enabled */
+#define        PKTF_KEEPALIVE          0x40000 /* pkt is kernel-generated keepalive */
 /* flags related to flow control/advisory and identification */
 #define        PKTF_FLOW_MASK  \
        (PKTF_FLOW_ID | PKTF_FLOW_ADV | PKTF_FLOW_LOCALSRC | PKTF_FLOW_RAWSOCK)
@@ -946,6 +949,7 @@ struct omb_class_stat {
        u_int64_t       mbcl_purge_cnt; /* # of purges so far */
        u_int64_t       mbcl_fail_cnt;  /* # of allocation failures */
        u_int32_t       mbcl_ctotal;    /* total only for this class */
+       u_int32_t       mbcl_release_cnt; /* amount of memory returned */
        /*
         * Cache layer statistics
         */
@@ -974,6 +978,7 @@ typedef struct mb_class_stat {
        u_int64_t       mbcl_purge_cnt; /* # of purges so far */
        u_int64_t       mbcl_fail_cnt;  /* # of allocation failures */
        u_int32_t       mbcl_ctotal;    /* total only for this class */
+       u_int32_t       mbcl_release_cnt; /* amount of memory returned */
        /*
         * Cache layer statistics
         */
@@ -982,7 +987,8 @@ typedef struct mb_class_stat {
        u_int32_t       mbcl_mc_waiter_cnt;  /* # waiters on the cache */
        u_int32_t       mbcl_mc_wretry_cnt;  /* # of wait retries */
        u_int32_t       mbcl_mc_nwretry_cnt; /* # of no-wait retry attempts */
-       u_int64_t       mbcl_reserved[4];    /* for future use */
+       u_int32_t       mbcl_peak_reported; /* last usage peak reported */
+       u_int32_t       mbcl_reserved[7];    /* for future use */
 } mb_class_stat_t;
 
 #define        MCS_DISABLED    0       /* cache is permanently disabled */
@@ -1082,6 +1088,8 @@ struct mbuf;
 #define        M_COPYM_NOOP_HDR        0       /* don't copy/move pkthdr contents */
 #define        M_COPYM_COPY_HDR        1       /* copy pkthdr from old to new */
 #define        M_COPYM_MOVE_HDR        2       /* move pkthdr from old to new */
+#define        M_COPYM_MUST_COPY_HDR   3       /* MUST copy pkthdr from old to new */
+#define        M_COPYM_MUST_MOVE_HDR   4       /* MUST move pkthdr from old to new */
 
 /*
  * These macros are mapped to the appropriate KPIs, so that private code
@@ -1289,6 +1297,8 @@ __private_extern__ struct mbuf *m_getpackets_internal(unsigned int *, int,
 __private_extern__ struct mbuf *m_allocpacket_internal(unsigned int *, size_t,
     unsigned int *, int, int, size_t);
 
+__private_extern__ void m_drain(void);
+
 /*
  * Packets may have annotations attached by affixing a list of "packet
  * tags" to the pkthdr structure.  Packet tags are dynamically allocated
@@ -1329,7 +1339,7 @@ enum {
        KERNEL_TAG_TYPE_ENCAP                   = 8,
        KERNEL_TAG_TYPE_INET6                   = 9,
        KERNEL_TAG_TYPE_IPSEC                   = 10,
-       KERNEL_TAG_TYPE_DRVAUX                  = 11
+       KERNEL_TAG_TYPE_DRVAUX                  = 11,
 };
 
 /* Packet tag routines */