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提交 bc59ba39 编写于 作者: C chetan loke 提交者： David S. Miller
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af_packet: Prefixed tpacket_v3 structs to avoid name space collision 

structs introduced in tpacket_v3 implementation are prefixed with 'tpacket'
to avoid namespace collision.

Compile tested.
Signed-off-by: NChetan Loke <loke.chetan@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 165c68d5
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Showing with 71 addition and 64 deletion
include/linux/if_packet.h
浏览文件 @ bc59ba39
......@@ -126,7 +126,7 @@ struct tpacket2_hdr {
__u16 tp_padding;
};
struct hdr_variant1 {
struct tpacket_hdr_variant1 {
__u32 tp_rxhash;
__u32 tp_vlan_tci;
};
......@@ -142,11 +142,11 @@ struct tpacket3_hdr {
__u16 tp_net;
/* pkt_hdr variants */
union {
struct hdr_variant1 hv1;
struct tpacket_hdr_variant1 hv1;
};
};
struct bd_ts {
struct tpacket_bd_ts {
unsigned int ts_sec;
union {
unsigned int ts_usec;
......@@ -154,7 +154,7 @@ struct bd_ts {
};
};
struct hdr_v1 {
struct tpacket_hdr_v1 {
__u32 block_status;
__u32 num_pkts;
__u32 offset_to_first_pkt;
......@@ -200,17 +200,17 @@ struct hdr_v1 {
* Use the ts of the first packet in the block.
*
*/
struct bd_ts ts_first_pkt, ts_last_pkt;
struct tpacket_bd_ts ts_first_pkt, ts_last_pkt;
};
union bd_header_u {
struct hdr_v1 bh1;
union tpacket_bd_header_u {
struct tpacket_hdr_v1 bh1;
};
struct block_desc {
struct tpacket_block_desc {
__u32 version;
__u32 offset_to_priv;
union bd_header_u hdr;
union tpacket_bd_header_u hdr;
};
#define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll))
......
net/packet/af_packet.c
浏览文件 @ bc59ba39
......@@ -171,13 +171,13 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
#define V3_ALIGNMENT (8)
#define BLK_HDR_LEN (ALIGN(sizeof(struct block_desc), V3_ALIGNMENT))
#define BLK_HDR_LEN (ALIGN(sizeof(struct tpacket_block_desc), V3_ALIGNMENT))
#define BLK_PLUS_PRIV(sz_of_priv) \
(BLK_HDR_LEN + ALIGN((sz_of_priv), V3_ALIGNMENT))
/* kbdq - kernel block descriptor queue */
struct kbdq_core {
struct tpacket_kbdq_core {
struct pgv *pkbdq;
unsigned int feature_req_word;
unsigned int hdrlen;
......@@ -230,7 +230,7 @@ struct packet_ring_buffer {
unsigned int pg_vec_pages;
unsigned int pg_vec_len;
struct kbdq_core prb_bdqc;
struct tpacket_kbdq_core prb_bdqc;
atomic_t pending;
};
......@@ -249,21 +249,25 @@ static void *packet_previous_frame(struct packet_sock *po,
struct packet_ring_buffer *rb,
int status);
static void packet_increment_head(struct packet_ring_buffer *buff);
static int prb_curr_blk_in_use(struct kbdq_core *,
struct block_desc *);
static void *prb_dispatch_next_block(struct kbdq_core *,
static int prb_curr_blk_in_use(struct tpacket_kbdq_core *,
struct tpacket_block_desc *);
static void *prb_dispatch_next_block(struct tpacket_kbdq_core *,
struct packet_sock *);
static void prb_retire_current_block(struct kbdq_core *,
static void prb_retire_current_block(struct tpacket_kbdq_core *,
struct packet_sock *, unsigned int status);
static int prb_queue_frozen(struct kbdq_core *);
static void prb_open_block(struct kbdq_core *, struct block_desc *);
static int prb_queue_frozen(struct tpacket_kbdq_core *);
static void prb_open_block(struct tpacket_kbdq_core *,
struct tpacket_block_desc *);
static void prb_retire_rx_blk_timer_expired(unsigned long);
static void _prb_refresh_rx_retire_blk_timer(struct kbdq_core *);
static void prb_init_blk_timer(struct packet_sock *, struct kbdq_core *,
static void _prb_refresh_rx_retire_blk_timer(struct tpacket_kbdq_core *);
static void prb_init_blk_timer(struct packet_sock *,
struct tpacket_kbdq_core *,
void (*func) (unsigned long));
static void prb_fill_rxhash(struct kbdq_core *, struct tpacket3_hdr *);
static void prb_clear_rxhash(struct kbdq_core *, struct tpacket3_hdr *);
static void prb_fill_vlan_info(struct kbdq_core *, struct tpacket3_hdr *);
static void prb_fill_rxhash(struct tpacket_kbdq_core *, struct tpacket3_hdr *);
static void prb_clear_rxhash(struct tpacket_kbdq_core *,
struct tpacket3_hdr *);
static void prb_fill_vlan_info(struct tpacket_kbdq_core *,
struct tpacket3_hdr *);
static void packet_flush_mclist(struct sock *sk);
struct packet_fanout;
......@@ -322,11 +326,11 @@ struct packet_skb_cb {
#define PACKET_SKB_CB(__skb) ((struct packet_skb_cb *)((__skb)->cb))
#define GET_PBDQC_FROM_RB(x) ((struct kbdq_core *)(&(x)->prb_bdqc))
#define GET_PBDQC_FROM_RB(x) ((struct tpacket_kbdq_core *)(&(x)->prb_bdqc))
#define GET_PBLOCK_DESC(x, bid) \
((struct block_desc *)((x)->pkbdq[(bid)].buffer))
((struct tpacket_block_desc *)((x)->pkbdq[(bid)].buffer))
#define GET_CURR_PBLOCK_DESC_FROM_CORE(x) \
((struct block_desc *)((x)->pkbdq[(x)->kactive_blk_num].buffer))
((struct tpacket_block_desc *)((x)->pkbdq[(x)->kactive_blk_num].buffer))
#define GET_NEXT_PRB_BLK_NUM(x) \
(((x)->kactive_blk_num < ((x)->knum_blocks-1)) ? \
((x)->kactive_blk_num+1) : 0)
......@@ -480,7 +484,7 @@ static inline void *packet_current_frame(struct packet_sock *po,
return packet_lookup_frame(po, rb, rb->head, status);
}
static void prb_del_retire_blk_timer(struct kbdq_core *pkc)
static void prb_del_retire_blk_timer(struct tpacket_kbdq_core *pkc)
{
del_timer_sync(&pkc->retire_blk_timer);
}
......@@ -489,7 +493,7 @@ static void prb_shutdown_retire_blk_timer(struct packet_sock *po,
int tx_ring,
struct sk_buff_head *rb_queue)
{
struct kbdq_core *pkc;
struct tpacket_kbdq_core *pkc;
pkc = tx_ring ? &po->tx_ring.prb_bdqc : &po->rx_ring.prb_bdqc;
......@@ -501,7 +505,7 @@ static void prb_shutdown_retire_blk_timer(struct packet_sock *po,
}
static void prb_init_blk_timer(struct packet_sock *po,
struct kbdq_core *pkc,
struct tpacket_kbdq_core *pkc,
void (*func) (unsigned long))
{
init_timer(&pkc->retire_blk_timer);
......@@ -512,7 +516,7 @@ static void prb_init_blk_timer(struct packet_sock *po,
static void prb_setup_retire_blk_timer(struct packet_sock *po, int tx_ring)
{
struct kbdq_core *pkc;
struct tpacket_kbdq_core *pkc;
if (tx_ring)
BUG();
......@@ -568,7 +572,7 @@ static int prb_calc_retire_blk_tmo(struct packet_sock *po,
return tmo;
}
static void prb_init_ft_ops(struct kbdq_core *p1,
static void prb_init_ft_ops(struct tpacket_kbdq_core *p1,
union tpacket_req_u *req_u)
{
p1->feature_req_word = req_u->req3.tp_feature_req_word;
......@@ -579,14 +583,14 @@ static void init_prb_bdqc(struct packet_sock *po,
struct pgv *pg_vec,
union tpacket_req_u *req_u, int tx_ring)
{
struct kbdq_core *p1 = &rb->prb_bdqc;
struct block_desc *pbd;
struct tpacket_kbdq_core *p1 = &rb->prb_bdqc;
struct tpacket_block_desc *pbd;
memset(p1, 0x0, sizeof(*p1));
p1->knxt_seq_num = 1;
p1->pkbdq = pg_vec;
pbd = (struct block_desc *)pg_vec[0].buffer;
pbd = (struct tpacket_block_desc *)pg_vec[0].buffer;
p1->pkblk_start = (char *)pg_vec[0].buffer;
p1->kblk_size = req_u->req3.tp_block_size;
p1->knum_blocks = req_u->req3.tp_block_nr;
......@@ -610,7 +614,7 @@ static void init_prb_bdqc(struct packet_sock *po,
/* Do NOT update the last_blk_num first.
* Assumes sk_buff_head lock is held.
*/
static void _prb_refresh_rx_retire_blk_timer(struct kbdq_core *pkc)
static void _prb_refresh_rx_retire_blk_timer(struct tpacket_kbdq_core *pkc)
{
mod_timer(&pkc->retire_blk_timer,
jiffies + pkc->tov_in_jiffies);
......@@ -643,9 +647,9 @@ static void _prb_refresh_rx_retire_blk_timer(struct kbdq_core *pkc)
static void prb_retire_rx_blk_timer_expired(unsigned long data)
{
struct packet_sock *po = (struct packet_sock *)data;
struct kbdq_core *pkc = &po->rx_ring.prb_bdqc;
struct tpacket_kbdq_core *pkc = &po->rx_ring.prb_bdqc;
unsigned int frozen;
struct block_desc *pbd;
struct tpacket_block_desc *pbd;
spin_lock(&po->sk.sk_receive_queue.lock);
......@@ -709,8 +713,8 @@ static void prb_retire_rx_blk_timer_expired(unsigned long data)
spin_unlock(&po->sk.sk_receive_queue.lock);
}
static inline void prb_flush_block(struct kbdq_core *pkc1,
struct block_desc *pbd1, __u32 status)
static inline void prb_flush_block(struct tpacket_kbdq_core *pkc1,
struct tpacket_block_desc *pbd1, __u32 status)
{
/* Flush everything minus the block header */
......@@ -752,13 +756,14 @@ static inline void prb_flush_block(struct kbdq_core *pkc1,
* Note:We DONT refresh the timer on purpose.
* Because almost always the next block will be opened.
*/
static void prb_close_block(struct kbdq_core *pkc1, struct block_desc *pbd1,
static void prb_close_block(struct tpacket_kbdq_core *pkc1,
struct tpacket_block_desc *pbd1,
struct packet_sock *po, unsigned int stat)
{
__u32 status = TP_STATUS_USER | stat;
struct tpacket3_hdr *last_pkt;
struct hdr_v1 *h1 = &pbd1->hdr.bh1;
struct tpacket_hdr_v1 *h1 = &pbd1->hdr.bh1;
if (po->stats.tp_drops)
status |= TP_STATUS_LOSING;
......@@ -786,7 +791,7 @@ static void prb_close_block(struct kbdq_core *pkc1, struct block_desc *pbd1,
pkc1->kactive_blk_num = GET_NEXT_PRB_BLK_NUM(pkc1);
}
static inline void prb_thaw_queue(struct kbdq_core *pkc)
static inline void prb_thaw_queue(struct tpacket_kbdq_core *pkc)
{
pkc->reset_pending_on_curr_blk = 0;
}
......@@ -798,10 +803,11 @@ static inline void prb_thaw_queue(struct kbdq_core *pkc)
* 2) retire_blk_timer is refreshed.
*
*/
static void prb_open_block(struct kbdq_core *pkc1, struct block_desc *pbd1)
static void prb_open_block(struct tpacket_kbdq_core *pkc1,
struct tpacket_block_desc *pbd1)
{
struct timespec ts;
struct hdr_v1 *h1 = &pbd1->hdr.bh1;
struct tpacket_hdr_v1 *h1 = &pbd1->hdr.bh1;
smp_rmb();
......@@ -861,7 +867,7 @@ static void prb_open_block(struct kbdq_core *pkc1, struct block_desc *pbd1)
* case and __packet_lookup_frame_in_block will check if block-0
* is free and can now be re-used.
*/
static inline void prb_freeze_queue(struct kbdq_core *pkc,
static inline void prb_freeze_queue(struct tpacket_kbdq_core *pkc,
struct packet_sock *po)
{
pkc->reset_pending_on_curr_blk = 1;
......@@ -876,10 +882,10 @@ static inline void prb_freeze_queue(struct kbdq_core *pkc,
* Else, we will freeze the queue.
* So, caller must check the return value.
*/
static void *prb_dispatch_next_block(struct kbdq_core *pkc,
static void *prb_dispatch_next_block(struct tpacket_kbdq_core *pkc,
struct packet_sock *po)
{
struct block_desc *pbd;
struct tpacket_block_desc *pbd;
smp_rmb();
......@@ -901,10 +907,10 @@ static void *prb_dispatch_next_block(struct kbdq_core *pkc,
return (void *)pkc->nxt_offset;
}
static void prb_retire_current_block(struct kbdq_core *pkc,
static void prb_retire_current_block(struct tpacket_kbdq_core *pkc,
struct packet_sock *po, unsigned int status)
{
struct block_desc *pbd = GET_CURR_PBLOCK_DESC_FROM_CORE(pkc);
struct tpacket_block_desc *pbd = GET_CURR_PBLOCK_DESC_FROM_CORE(pkc);
/* retire/close the current block */
if (likely(TP_STATUS_KERNEL == BLOCK_STATUS(pbd))) {
......@@ -932,36 +938,36 @@ static void prb_retire_current_block(struct kbdq_core *pkc,
BUG();
}
static inline int prb_curr_blk_in_use(struct kbdq_core *pkc,
struct block_desc *pbd)
static inline int prb_curr_blk_in_use(struct tpacket_kbdq_core *pkc,
struct tpacket_block_desc *pbd)
{
return TP_STATUS_USER & BLOCK_STATUS(pbd);
}
static inline int prb_queue_frozen(struct kbdq_core *pkc)
static inline int prb_queue_frozen(struct tpacket_kbdq_core *pkc)
{
return pkc->reset_pending_on_curr_blk;
}
static inline void prb_clear_blk_fill_status(struct packet_ring_buffer *rb)
{
struct kbdq_core *pkc = GET_PBDQC_FROM_RB(rb);
struct tpacket_kbdq_core *pkc = GET_PBDQC_FROM_RB(rb);
atomic_dec(&pkc->blk_fill_in_prog);
}
static inline void prb_fill_rxhash(struct kbdq_core *pkc,
static inline void prb_fill_rxhash(struct tpacket_kbdq_core *pkc,
struct tpacket3_hdr *ppd)
{
ppd->hv1.tp_rxhash = skb_get_rxhash(pkc->skb);
}
static inline void prb_clear_rxhash(struct kbdq_core *pkc,
static inline void prb_clear_rxhash(struct tpacket_kbdq_core *pkc,
struct tpacket3_hdr *ppd)
{
ppd->hv1.tp_rxhash = 0;
}
static inline void prb_fill_vlan_info(struct kbdq_core *pkc,
static inline void prb_fill_vlan_info(struct tpacket_kbdq_core *pkc,
struct tpacket3_hdr *ppd)
{
if (vlan_tx_tag_present(pkc->skb)) {
......@@ -972,7 +978,7 @@ static inline void prb_fill_vlan_info(struct kbdq_core *pkc,
}
}
static void prb_run_all_ft_ops(struct kbdq_core *pkc,
static void prb_run_all_ft_ops(struct tpacket_kbdq_core *pkc,
struct tpacket3_hdr *ppd)
{
prb_fill_vlan_info(pkc, ppd);
......@@ -983,8 +989,9 @@ static void prb_run_all_ft_ops(struct kbdq_core *pkc,
prb_clear_rxhash(pkc, ppd);
}
static inline void prb_fill_curr_block(char *curr, struct kbdq_core *pkc,
struct block_desc *pbd,
static inline void prb_fill_curr_block(char *curr,
struct tpacket_kbdq_core *pkc,
struct tpacket_block_desc *pbd,
unsigned int len)
{
struct tpacket3_hdr *ppd;
......@@ -1006,8 +1013,8 @@ static void *__packet_lookup_frame_in_block(struct packet_sock *po,
unsigned int len
)
{
struct kbdq_core *pkc;
struct block_desc *pbd;
struct tpacket_kbdq_core *pkc;
struct tpacket_block_desc *pbd;
char *curr, *end;
pkc = GET_PBDQC_FROM_RB(((struct packet_ring_buffer *)&po->rx_ring));
......@@ -1087,8 +1094,8 @@ static inline void *prb_lookup_block(struct packet_sock *po,
unsigned int previous,
int status)
{
struct kbdq_core *pkc = GET_PBDQC_FROM_RB(rb);
struct block_desc *pbd = GET_PBLOCK_DESC(pkc, previous);
struct tpacket_kbdq_core *pkc = GET_PBDQC_FROM_RB(rb);
struct tpacket_block_desc *pbd = GET_PBLOCK_DESC(pkc, previous);
if (status != BLOCK_STATUS(pbd))
return NULL;
......
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