packet: Introduce net/packet/internal.h header
The diag module will need to access some private packet_sock data, so move it to a header in advance. This file will be shared between the af_packet.c and the diag.c Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov
David S. Miller
parent
ad5b310228
commit
2787b04b6c
@ -93,6 +93,8 @@
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#include <net/inet_common.h>
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#endif
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#include "internal.h"
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/*
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Assumptions:
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- if device has no dev->hard_header routine, it adds and removes ll header
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@ -146,14 +148,6 @@ dev->hard_header == NULL (ll header is added by device, we cannot control it)
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/* Private packet socket structures. */
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struct packet_mclist {
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struct packet_mclist *next;
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int ifindex;
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int count;
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unsigned short type;
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unsigned short alen;
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unsigned char addr[MAX_ADDR_LEN];
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};
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/* identical to struct packet_mreq except it has
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* a longer address field.
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*/
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@ -175,63 +169,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
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#define BLK_PLUS_PRIV(sz_of_priv) \
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(BLK_HDR_LEN + ALIGN((sz_of_priv), V3_ALIGNMENT))
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/* kbdq - kernel block descriptor queue */
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struct tpacket_kbdq_core {
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struct pgv *pkbdq;
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unsigned int feature_req_word;
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unsigned int hdrlen;
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unsigned char reset_pending_on_curr_blk;
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unsigned char delete_blk_timer;
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unsigned short kactive_blk_num;
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unsigned short blk_sizeof_priv;
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/* last_kactive_blk_num:
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* trick to see if user-space has caught up
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* in order to avoid refreshing timer when every single pkt arrives.
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*/
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unsigned short last_kactive_blk_num;
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char *pkblk_start;
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char *pkblk_end;
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int kblk_size;
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unsigned int knum_blocks;
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uint64_t knxt_seq_num;
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char *prev;
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char *nxt_offset;
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struct sk_buff *skb;
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atomic_t blk_fill_in_prog;
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/* Default is set to 8ms */
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#define DEFAULT_PRB_RETIRE_TOV (8)
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unsigned short retire_blk_tov;
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unsigned short version;
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unsigned long tov_in_jiffies;
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/* timer to retire an outstanding block */
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struct timer_list retire_blk_timer;
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};
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#define PGV_FROM_VMALLOC 1
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struct pgv {
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char *buffer;
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};
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struct packet_ring_buffer {
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struct pgv *pg_vec;
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unsigned int head;
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unsigned int frames_per_block;
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unsigned int frame_size;
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unsigned int frame_max;
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unsigned int pg_vec_order;
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unsigned int pg_vec_pages;
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unsigned int pg_vec_len;
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struct tpacket_kbdq_core prb_bdqc;
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atomic_t pending;
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};
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#define BLOCK_STATUS(x) ((x)->hdr.bh1.block_status)
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#define BLOCK_NUM_PKTS(x) ((x)->hdr.bh1.num_pkts)
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@ -269,34 +207,6 @@ static void prb_fill_vlan_info(struct tpacket_kbdq_core *,
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struct tpacket3_hdr *);
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static void packet_flush_mclist(struct sock *sk);
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struct packet_fanout;
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struct packet_sock {
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/* struct sock has to be the first member of packet_sock */
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struct sock sk;
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struct packet_fanout *fanout;
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struct tpacket_stats stats;
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union tpacket_stats_u stats_u;
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struct packet_ring_buffer rx_ring;
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struct packet_ring_buffer tx_ring;
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int copy_thresh;
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spinlock_t bind_lock;
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struct mutex pg_vec_lock;
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unsigned int running:1, /* prot_hook is attached*/
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auxdata:1,
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origdev:1,
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has_vnet_hdr:1;
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int ifindex; /* bound device */
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__be16 num;
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struct packet_mclist *mclist;
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atomic_t mapped;
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enum tpacket_versions tp_version;
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unsigned int tp_hdrlen;
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unsigned int tp_reserve;
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unsigned int tp_loss:1;
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unsigned int tp_tstamp;
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struct packet_type prot_hook ____cacheline_aligned_in_smp;
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};
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#define PACKET_FANOUT_MAX 256
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struct packet_fanout {
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@ -334,11 +244,6 @@ struct packet_skb_cb {
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(((x)->kactive_blk_num < ((x)->knum_blocks-1)) ? \
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((x)->kactive_blk_num+1) : 0)
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static struct packet_sock *pkt_sk(struct sock *sk)
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{
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return (struct packet_sock *)sk;
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}
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static void __fanout_unlink(struct sock *sk, struct packet_sock *po);
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static void __fanout_link(struct sock *sk, struct packet_sock *po);
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103
net/packet/internal.h
Normal file
103
net/packet/internal.h
Normal file
@ -0,0 +1,103 @@
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#ifndef __PACKET_INTERNAL_H__
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#define __PACKET_INTERNAL_H__
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struct packet_mclist {
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struct packet_mclist *next;
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int ifindex;
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int count;
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unsigned short type;
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unsigned short alen;
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unsigned char addr[MAX_ADDR_LEN];
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};
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/* kbdq - kernel block descriptor queue */
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struct tpacket_kbdq_core {
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struct pgv *pkbdq;
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unsigned int feature_req_word;
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unsigned int hdrlen;
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unsigned char reset_pending_on_curr_blk;
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unsigned char delete_blk_timer;
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unsigned short kactive_blk_num;
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unsigned short blk_sizeof_priv;
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/* last_kactive_blk_num:
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* trick to see if user-space has caught up
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* in order to avoid refreshing timer when every single pkt arrives.
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*/
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unsigned short last_kactive_blk_num;
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char *pkblk_start;
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char *pkblk_end;
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int kblk_size;
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unsigned int knum_blocks;
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uint64_t knxt_seq_num;
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char *prev;
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char *nxt_offset;
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struct sk_buff *skb;
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atomic_t blk_fill_in_prog;
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/* Default is set to 8ms */
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#define DEFAULT_PRB_RETIRE_TOV (8)
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unsigned short retire_blk_tov;
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unsigned short version;
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unsigned long tov_in_jiffies;
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/* timer to retire an outstanding block */
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struct timer_list retire_blk_timer;
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};
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struct pgv {
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char *buffer;
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};
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struct packet_ring_buffer {
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struct pgv *pg_vec;
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unsigned int head;
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unsigned int frames_per_block;
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unsigned int frame_size;
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unsigned int frame_max;
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unsigned int pg_vec_order;
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unsigned int pg_vec_pages;
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unsigned int pg_vec_len;
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struct tpacket_kbdq_core prb_bdqc;
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atomic_t pending;
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};
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struct packet_fanout;
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struct packet_sock {
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/* struct sock has to be the first member of packet_sock */
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struct sock sk;
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struct packet_fanout *fanout;
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struct tpacket_stats stats;
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union tpacket_stats_u stats_u;
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struct packet_ring_buffer rx_ring;
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struct packet_ring_buffer tx_ring;
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int copy_thresh;
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spinlock_t bind_lock;
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struct mutex pg_vec_lock;
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unsigned int running:1, /* prot_hook is attached*/
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auxdata:1,
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origdev:1,
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has_vnet_hdr:1;
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int ifindex; /* bound device */
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__be16 num;
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struct packet_mclist *mclist;
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atomic_t mapped;
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enum tpacket_versions tp_version;
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unsigned int tp_hdrlen;
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unsigned int tp_reserve;
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unsigned int tp_loss:1;
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unsigned int tp_tstamp;
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struct packet_type prot_hook ____cacheline_aligned_in_smp;
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};
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static struct packet_sock *pkt_sk(struct sock *sk)
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{
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return (struct packet_sock *)sk;
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}
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#endif
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