Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / net / packet / internal.h

diff --git a/kernel/net/packet/internal.h b/kernel/net/packet/internal.h
new file mode 100644 (file)
index 0000000..fe6e20c
--- /dev/null
+++ b/kernel/net/packet/internal.h
@@ -0,0 +1,125 @@
+#ifndef __PACKET_INTERNAL_H__
+#define __PACKET_INTERNAL_H__
+
+struct packet_mclist {
+       struct packet_mclist    *next;
+       int                     ifindex;
+       int                     count;
+       unsigned short          type;
+       unsigned short          alen;
+       unsigned char           addr[MAX_ADDR_LEN];
+};
+
+/* kbdq - kernel block descriptor queue */
+struct tpacket_kbdq_core {
+       struct pgv      *pkbdq;
+       unsigned int    feature_req_word;
+       unsigned int    hdrlen;
+       unsigned char   reset_pending_on_curr_blk;
+       unsigned char   delete_blk_timer;
+       unsigned short  kactive_blk_num;
+       unsigned short  blk_sizeof_priv;
+
+       /* last_kactive_blk_num:
+        * trick to see if user-space has caught up
+        * in order to avoid refreshing timer when every single pkt arrives.
+        */
+       unsigned short  last_kactive_blk_num;
+
+       char            *pkblk_start;
+       char            *pkblk_end;
+       int             kblk_size;
+       unsigned int    max_frame_len;
+       unsigned int    knum_blocks;
+       uint64_t        knxt_seq_num;
+       char            *prev;
+       char            *nxt_offset;
+       struct sk_buff  *skb;
+
+       atomic_t        blk_fill_in_prog;
+
+       /* Default is set to 8ms */
+#define DEFAULT_PRB_RETIRE_TOV (8)
+
+       unsigned short  retire_blk_tov;
+       unsigned short  version;
+       unsigned long   tov_in_jiffies;
+
+       /* timer to retire an outstanding block */
+       struct timer_list retire_blk_timer;
+};
+
+struct pgv {
+       char *buffer;
+};
+
+struct packet_ring_buffer {
+       struct pgv              *pg_vec;
+
+       unsigned int            head;
+       unsigned int            frames_per_block;
+       unsigned int            frame_size;
+       unsigned int            frame_max;
+
+       unsigned int            pg_vec_order;
+       unsigned int            pg_vec_pages;
+       unsigned int            pg_vec_len;
+
+       unsigned int __percpu   *pending_refcnt;
+
+       struct tpacket_kbdq_core        prb_bdqc;
+};
+
+extern struct mutex fanout_mutex;
+#define PACKET_FANOUT_MAX      256
+
+struct packet_fanout {
+       possible_net_t          net;
+       unsigned int            num_members;
+       u16                     id;
+       u8                      type;
+       u8                      flags;
+       atomic_t                rr_cur;
+       struct list_head        list;
+       struct sock             *arr[PACKET_FANOUT_MAX];
+       int                     next[PACKET_FANOUT_MAX];
+       spinlock_t              lock;
+       atomic_t                sk_ref;
+       struct packet_type      prot_hook ____cacheline_aligned_in_smp;
+};
+
+struct packet_sock {
+       /* struct sock has to be the first member of packet_sock */
+       struct sock             sk;
+       struct packet_fanout    *fanout;
+       union  tpacket_stats_u  stats;
+       struct packet_ring_buffer       rx_ring;
+       struct packet_ring_buffer       tx_ring;
+       int                     copy_thresh;
+       spinlock_t              bind_lock;
+       struct mutex            pg_vec_lock;
+       unsigned int            running:1,      /* prot_hook is attached*/
+                               auxdata:1,
+                               origdev:1,
+                               has_vnet_hdr:1;
+       int                     ifindex;        /* bound device         */
+       __be16                  num;
+       struct packet_mclist    *mclist;
+       atomic_t                mapped;
+       enum tpacket_versions   tp_version;
+       unsigned int            tp_hdrlen;
+       unsigned int            tp_reserve;
+       unsigned int            tp_loss:1;
+       unsigned int            tp_tx_has_off:1;
+       unsigned int            tp_tstamp;
+       struct net_device __rcu *cached_dev;
+       int                     (*xmit)(struct sk_buff *skb);
+       struct packet_type      prot_hook ____cacheline_aligned_in_smp;
+};
+
+static struct packet_sock *pkt_sk(struct sock *sk)
+{
+       return (struct packet_sock *)sk;
+}
+
+#endif