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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>
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Pavel Emelyanov
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David S. Miller
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Aug 14, 2012
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| #ifndef __PACKET_INTERNAL_H__ | ||
| #define __PACKET_INTERNAL_H__ | ||
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| struct packet_mclist { | ||
| struct packet_mclist *next; | ||
| int ifindex; | ||
| int count; | ||
| unsigned short type; | ||
| unsigned short alen; | ||
| unsigned char addr[MAX_ADDR_LEN]; | ||
| }; | ||
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| /* 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; | ||
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| /* 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; | ||
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| char *pkblk_start; | ||
| char *pkblk_end; | ||
| int kblk_size; | ||
| unsigned int knum_blocks; | ||
| uint64_t knxt_seq_num; | ||
| char *prev; | ||
| char *nxt_offset; | ||
| struct sk_buff *skb; | ||
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| atomic_t blk_fill_in_prog; | ||
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| /* Default is set to 8ms */ | ||
| #define DEFAULT_PRB_RETIRE_TOV (8) | ||
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| unsigned short retire_blk_tov; | ||
| unsigned short version; | ||
| unsigned long tov_in_jiffies; | ||
|
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| /* timer to retire an outstanding block */ | ||
| struct timer_list retire_blk_timer; | ||
| }; | ||
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| struct pgv { | ||
| char *buffer; | ||
| }; | ||
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| struct packet_ring_buffer { | ||
| struct pgv *pg_vec; | ||
| unsigned int head; | ||
| unsigned int frames_per_block; | ||
| unsigned int frame_size; | ||
| unsigned int frame_max; | ||
|
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| unsigned int pg_vec_order; | ||
| unsigned int pg_vec_pages; | ||
| unsigned int pg_vec_len; | ||
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| struct tpacket_kbdq_core prb_bdqc; | ||
| atomic_t pending; | ||
| }; | ||
|
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| struct packet_fanout; | ||
| struct packet_sock { | ||
| /* struct sock has to be the first member of packet_sock */ | ||
| struct sock sk; | ||
| struct packet_fanout *fanout; | ||
| struct tpacket_stats stats; | ||
| union tpacket_stats_u stats_u; | ||
| 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_tstamp; | ||
| struct packet_type prot_hook ____cacheline_aligned_in_smp; | ||
| }; | ||
|
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| static struct packet_sock *pkt_sk(struct sock *sk) | ||
| { | ||
| return (struct packet_sock *)sk; | ||
| } | ||
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| #endif |