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net-timestamp: move timestamp flags out of sk_flags

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sk_flags is reaching its limit. New timestamping options will not fit.
Move all of them into a new field sk->sk_tsflags.

Added benefit is that this removes boilerplate code to convert between
SOF_TIMESTAMPING_.. and SOCK_TIMESTAMPING_.. in getsockopt/setsockopt.

SOCK_TIMESTAMPING_RX_SOFTWARE is also used to toggle the receive
timestamp logic (netstamp_needed). That can be simplified and this
last key removed, but will leave that for a separate patch.

Signed-off-by: Willem de Bruijn <willemb@google.com>

----

The u16 in sock can be moved into a 16-bit hole below sk_gso_max_segs,
though that scatters tstamp fields throughout the struct.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Willem de Bruijn
2014-08-04 22:11:46 -04:00
committed by David S. Miller
parent f24b9be595
commit b9f40e21ef
3 changed files with 17 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
net/socket.c
View File

@@ -613,9 +613,9 @@ EXPORT_SYMBOL(sock_release);
void sock_tx_timestamp(struct sock *sk, __u8 *tx_flags)
{
*tx_flags = 0;
if (sock_flag(sk, SOCK_TIMESTAMPING_TX_HARDWARE))
if (sk->sk_tsflags & SOF_TIMESTAMPING_TX_HARDWARE)
*tx_flags |= SKBTX_HW_TSTAMP;
if (sock_flag(sk, SOCK_TIMESTAMPING_TX_SOFTWARE))
if (sk->sk_tsflags & SOF_TIMESTAMPING_TX_SOFTWARE)
*tx_flags |= SKBTX_SW_TSTAMP;
if (sock_flag(sk, SOCK_WIFI_STATUS))
*tx_flags |= SKBTX_WIFI_STATUS;
@@ -723,12 +723,12 @@ void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
}
memset(&tss, 0, sizeof(tss));
if ((sock_flag(sk, SOCK_TIMESTAMPING_SOFTWARE) ||
if ((sk->sk_tsflags & SOF_TIMESTAMPING_SOFTWARE ||
skb_shinfo(skb)->tx_flags & SKBTX_ANY_SW_TSTAMP) &&
ktime_to_timespec_cond(skb->tstamp, tss.ts + 0))
empty = 0;
if (shhwtstamps &&
sock_flag(sk, SOCK_TIMESTAMPING_RAW_HARDWARE) &&
(sk->sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE) &&
ktime_to_timespec_cond(shhwtstamps->hwtstamp, tss.ts + 2))
empty = 0;
if (!empty)