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docs: networking: replace skb_hwtstamp_tx with skb_tstamp_tx 

Tiny doc fix. The hardware transmit function was called skb_tstamp_tx
from its introduction in commit ac45f602ee ("net: infrastructure for
hardware time stamping") in the same series as this documentation.

Fixes: cb9eff0978 ("net: new user space API for time stamping of incoming and outgoing packets")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20211220144608.2783526-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Willem de Bruijn 2021-12-20 09:46:08 -05:00 committed by Jakub Kicinski
parent 8f905c0e73
commit a9725e1d39
1 changed files with 2 additions and 2 deletions
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4
Documentation/networking/timestamping.rst
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@ -582,8 +582,8 @@ Time stamps for outgoing packets are to be generated as follows:
and hardware timestamping is not possible (SKBTX_IN_PROGRESS not set).
- As soon as the driver has sent the packet and/or obtained a
hardware time stamp for it, it passes the time stamp back by
calling skb_hwtstamp_tx() with the original skb, the raw
hardware time stamp. skb_hwtstamp_tx() clones the original skb and
calling skb_tstamp_tx() with the original skb, the raw
hardware time stamp. skb_tstamp_tx() clones the original skb and
adds the timestamps, therefore the original skb has to be freed now.
If obtaining the hardware time stamp somehow fails, then the driver
should not fall back to software time stamping. The rationale is that