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bnxt_en: Let bnxt_stamp_tx_skb() return error code

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Change the function bnxt_stamp_tx_skb() to return 0 for suceess
or -EAGAIN if the timestamp is still pending in firmware.  The
calling PTP aux worker will reschedule based on the return code.

Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavan Chebbi 2024-06-28 12:30:03 -07:00 committed by David S. Miller
parent 573f2a4bfc
commit 9bf688d40d
1 changed files with 11 additions and 5 deletions
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16
drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
View File

@ -683,7 +683,7 @@ static u64 bnxt_cc_read(const struct cyclecounter *cc)
return ns;
}
static void bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb)
static int bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb)
{
struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
struct skb_shared_hwtstamps timestamp;
@ -711,7 +711,7 @@ static void bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb)
} else {
if (!time_after_eq(jiffies, txts_req->abs_txts_tmo)) {
txts_req->txts_pending = true;
return;
return -EAGAIN;
}
ptp->stats.ts_lost++;
netdev_warn_once(bp->dev,
@ -722,6 +722,8 @@ static void bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb)
txts_req->tx_skb = NULL;
atomic_inc(&ptp->tx_avail);
txts_req->txts_pending = false;
return 0;
}
static long bnxt_ptp_ts_aux_work(struct ptp_clock_info *ptp_info)
@ -730,12 +732,16 @@ static long bnxt_ptp_ts_aux_work(struct ptp_clock_info *ptp_info)
ptp_info);
unsigned long now = jiffies;
struct bnxt *bp = ptp->bp;
int rc = 0;
if (ptp->txts_req.tx_skb)
bnxt_stamp_tx_skb(bp, ptp->txts_req.tx_skb);
rc = bnxt_stamp_tx_skb(bp, ptp->txts_req.tx_skb);
if (!time_after_eq(now, ptp->next_period))
if (!time_after_eq(now, ptp->next_period)) {
if (rc == -EAGAIN)
return 0;
return ptp->next_period - now;
}
bnxt_ptp_get_current_time(bp);
ptp->next_period = now + HZ;
@ -745,7 +751,7 @@ static long bnxt_ptp_ts_aux_work(struct ptp_clock_info *ptp_info)
spin_unlock_bh(&ptp->ptp_lock);
ptp->next_overflow_check = now + BNXT_PHC_OVERFLOW_PERIOD;
}
if (ptp->txts_req.txts_pending)
if (rc == -EAGAIN)
return 0;
return HZ;
}