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: Chetan Loke <loke.chetan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 4371e3a..2ea3d63 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -171,13 +171,13 @@
#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 @@
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 @@
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 *,
- 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_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 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 @@
#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 @@
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 @@
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_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_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 @@
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 @@
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 @@
/* 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_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 @@
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 @@
* 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 @@
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 @@
* 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 @@
* 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 @@
* 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 @@
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 @@
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 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 @@
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 @@
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 @@
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;
