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net: simplify flags for tx timestamping

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This patch removes the abstraction introduced by the union skb_shared_tx in
the shared skb data.

The access of the different union elements at several places led to some
confusion about accessing the shared tx_flags e.g. in skb_orphan_try().

    http://marc.info/?l=linux-netdev&m=128084897415886&w=2

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oliver Hartkopp
2010-08-17 08:59:14 +00:00
committed by David S. Miller
parent 4d5870ec10
commit 2244d07bfa
17 changed files with 68 additions and 87 deletions
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15
drivers/net/gianfar.c
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@@ -2048,7 +2048,6 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
u32 bufaddr;
unsigned long flags;
unsigned int nr_frags, nr_txbds, length;
union skb_shared_tx *shtx;
/*
* TOE=1 frames larger than 2500 bytes may see excess delays
@@ -2069,10 +2068,10 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
txq = netdev_get_tx_queue(dev, rq);
base = tx_queue->tx_bd_base;
regs = tx_queue->grp->regs;
shtx = skb_tx(skb);
/* check if time stamp should be generated */
if (unlikely(shtx->hardware && priv->hwts_tx_en))
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
priv->hwts_tx_en))
do_tstamp = 1;
/* make space for additional header when fcb is needed */
@@ -2174,7 +2173,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* Setup tx hardware time stamping if requested */
if (unlikely(do_tstamp)) {
shtx->in_progress = 1;
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
if (fcb == NULL)
fcb = gfar_add_fcb(skb);
fcb->ptp = 1;
@@ -2446,7 +2445,6 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue)
int howmany = 0;
u32 lstatus;
size_t buflen;
union skb_shared_tx *shtx;
rx_queue = priv->rx_queue[tx_queue->qindex];
bdp = tx_queue->dirty_tx;
@@ -2461,8 +2459,7 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue)
* When time stamping, one additional TxBD must be freed.
* Also, we need to dma_unmap_single() the TxPAL.
*/
shtx = skb_tx(skb);
if (unlikely(shtx->in_progress))
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS))
nr_txbds = frags + 2;
else
nr_txbds = frags + 1;
@@ -2476,7 +2473,7 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue)
(lstatus & BD_LENGTH_MASK))
break;
if (unlikely(shtx->in_progress)) {
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
next = next_txbd(bdp, base, tx_ring_size);
buflen = next->length + GMAC_FCB_LEN;
} else
@@ -2485,7 +2482,7 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue)
dma_unmap_single(&priv->ofdev->dev, bdp->bufPtr,
buflen, DMA_TO_DEVICE);
if (unlikely(shtx->in_progress)) {
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
struct skb_shared_hwtstamps shhwtstamps;
u64 *ns = (u64*) (((u32)skb->data + 0x10) & ~0x7);
memset(&shhwtstamps, 0, sizeof(shhwtstamps));