forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

bnx2x: Add timestamping and PTP hardware clock support

Browse source 
This adds a PHC to the bnx2x driver. Driver supports timestamping send/receive
PTP packets, as well as adjusting the on-chip clock.

The driver has been tested with linuxptp project.

Signed-off-by: Michal Kalderon <Michal.Kalderon@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michal Kalderon 2014-08-17 16:47:44 +03:00 • committed by David S. Miller
commit eeed018cbf
8 changed files with 984 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

25
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
View file

@ -1067,6 +1067,11 @@ reuse_rx:
skb_record_rx_queue(skb, fp->rx_queue);
/* Check if this packet was timestamped */
if (unlikely(le16_to_cpu(cqe->fast_path_cqe.type_error_flags) &
(1 << ETH_FAST_PATH_RX_CQE_PTP_PKT_SHIFT)))
bnx2x_set_rx_ts(bp, skb);
if (le16_to_cpu(cqe_fp->pars_flags.flags) &
PARSING_FLAGS_VLAN)
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
@ -2808,7 +2813,11 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
/* Initialize Rx filter. */
bnx2x_set_rx_mode_inner(bp);
/* Start the Tx */
if (bp->flags & PTP_SUPPORTED) {
bnx2x_init_ptp(bp);
bnx2x_configure_ptp_filters(bp);
}
/* Start Tx */
switch (load_mode) {
case LOAD_NORMAL:
/* Tx queue should be only re-enabled */
@ -3833,6 +3842,20 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
if (!(bp->flags & TX_TIMESTAMPING_EN)) {
BNX2X_ERR("Tx timestamping was not enabled, this packet will not be timestamped\n");
} else if (bp->ptp_tx_skb) {
BNX2X_ERR("The device supports only a single outstanding packet to timestamp, this packet will not be timestamped\n");
} else {
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
/* schedule check for Tx timestamp */
bp->ptp_tx_skb = skb_get(skb);
bp->ptp_tx_start = jiffies;
schedule_work(&bp->ptp_task);
}
}
/* header nbd: indirectly zero other flags! */
tx_start_bd->general_data = 1 << ETH_TX_START_BD_HDR_NBDS_SHIFT;