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Message-Id: <1406735328-7520-3-git-send-email-willemb@google.com>
Date: Wed, 30 Jul 2014 11:48:45 -0400
From: Willem de Bruijn <willemb@...gle.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, eric.dumazet@...il.com,
richardcochran@...il.com, Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH net-next v4 2/5] net-timestamp: move timestamp flags out of sk_flags
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@...gle.com>
---
include/net/sock.h | 28 ++++++++++------------------
net/core/sock.c | 25 ++-----------------------
net/socket.c | 8 ++++----
3 files changed, 16 insertions(+), 45 deletions(-)
diff --git a/include/net/sock.h b/include/net/sock.h
index 02f5b35..cb5e15b 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -67,6 +67,7 @@
#include <linux/atomic.h>
#include <net/dst.h>
#include <net/checksum.h>
+#include <linux/net_tstamp.h>
struct cgroup;
struct cgroup_subsys;
@@ -411,6 +412,7 @@ struct sock {
void *sk_protinfo;
struct timer_list sk_timer;
ktime_t sk_stamp;
+ u16 sk_tsflags;
struct socket *sk_socket;
void *sk_user_data;
struct page_frag sk_frag;
@@ -701,12 +703,7 @@ enum sock_flags {
SOCK_LOCALROUTE, /* route locally only, %SO_DONTROUTE setting */
SOCK_QUEUE_SHRUNK, /* write queue has been shrunk recently */
SOCK_MEMALLOC, /* VM depends on this socket for swapping */
- SOCK_TIMESTAMPING_TX_HARDWARE, /* %SOF_TIMESTAMPING_TX_HARDWARE */
- SOCK_TIMESTAMPING_TX_SOFTWARE, /* %SOF_TIMESTAMPING_TX_SOFTWARE */
- SOCK_TIMESTAMPING_RX_HARDWARE, /* %SOF_TIMESTAMPING_RX_HARDWARE */
SOCK_TIMESTAMPING_RX_SOFTWARE, /* %SOF_TIMESTAMPING_RX_SOFTWARE */
- SOCK_TIMESTAMPING_SOFTWARE, /* %SOF_TIMESTAMPING_SOFTWARE */
- SOCK_TIMESTAMPING_RAW_HARDWARE, /* %SOF_TIMESTAMPING_RAW_HARDWARE */
SOCK_FASYNC, /* fasync() active */
SOCK_RXQ_OVFL,
SOCK_ZEROCOPY, /* buffers from userspace */
@@ -2160,20 +2157,17 @@ sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
/*
* generate control messages if
- * - receive time stamping in software requested (SOCK_RCVTSTAMP
- * or SOCK_TIMESTAMPING_RX_SOFTWARE)
+ * - receive time stamping in software requested
* - software time stamp available and wanted
- * (SOCK_TIMESTAMPING_SOFTWARE)
* - hardware time stamps available and wanted
- * SOCK_TIMESTAMPING_RAW_HARDWARE
*/
if (sock_flag(sk, SOCK_RCVTSTAMP) ||
- sock_flag(sk, SOCK_TIMESTAMPING_RX_SOFTWARE) ||
+ (sk->sk_tsflags & SOF_TIMESTAMPING_RX_SOFTWARE) ||
(kt.tv64 &&
- (sock_flag(sk, SOCK_TIMESTAMPING_SOFTWARE) ||
+ (sk->sk_tsflags & SOF_TIMESTAMPING_SOFTWARE ||
skb_shinfo(skb)->tx_flags & SKBTX_ANY_SW_TSTAMP)) ||
(hwtstamps->hwtstamp.tv64 &&
- sock_flag(sk, SOCK_TIMESTAMPING_RAW_HARDWARE)))
+ (sk->sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE)))
__sock_recv_timestamp(msg, sk, skb);
else
sk->sk_stamp = kt;
@@ -2189,11 +2183,11 @@ static inline void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,
struct sk_buff *skb)
{
#define FLAGS_TS_OR_DROPS ((1UL << SOCK_RXQ_OVFL) | \
- (1UL << SOCK_RCVTSTAMP) | \
- (1UL << SOCK_TIMESTAMPING_SOFTWARE) | \
- (1UL << SOCK_TIMESTAMPING_RAW_HARDWARE))
+ (1UL << SOCK_RCVTSTAMP))
+#define TSFLAGS_ANY (SOF_TIMESTAMPING_SOFTWARE | \
+ SOF_TIMESTAMPING_RAW_HARDWARE)
- if (sk->sk_flags & FLAGS_TS_OR_DROPS)
+ if (sk->sk_flags & FLAGS_TS_OR_DROPS || sk->sk_tsflags & TSFLAGS_ANY)
__sock_recv_ts_and_drops(msg, sk, skb);
else
sk->sk_stamp = skb->tstamp;
@@ -2203,8 +2197,6 @@ static inline void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,
* sock_tx_timestamp - checks whether the outgoing packet is to be time stamped
* @sk: socket sending this packet
* @tx_flags: filled with instructions for time stamping
- *
- * Currently only depends on SOCK_TIMESTAMPING* flags.
*/
void sock_tx_timestamp(struct sock *sk, __u8 *tx_flags);
diff --git a/net/core/sock.c b/net/core/sock.c
index 134291d..2ad5407 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -848,22 +848,13 @@ set_rcvbuf:
ret = -EINVAL;
break;
}
- sock_valbool_flag(sk, SOCK_TIMESTAMPING_TX_HARDWARE,
- val & SOF_TIMESTAMPING_TX_HARDWARE);
- sock_valbool_flag(sk, SOCK_TIMESTAMPING_TX_SOFTWARE,
- val & SOF_TIMESTAMPING_TX_SOFTWARE);
- sock_valbool_flag(sk, SOCK_TIMESTAMPING_RX_HARDWARE,
- val & SOF_TIMESTAMPING_RX_HARDWARE);
+ sk->sk_tsflags = val;
if (val & SOF_TIMESTAMPING_RX_SOFTWARE)
sock_enable_timestamp(sk,
SOCK_TIMESTAMPING_RX_SOFTWARE);
else
sock_disable_timestamp(sk,
(1UL << SOCK_TIMESTAMPING_RX_SOFTWARE));
- sock_valbool_flag(sk, SOCK_TIMESTAMPING_SOFTWARE,
- val & SOF_TIMESTAMPING_SOFTWARE);
- sock_valbool_flag(sk, SOCK_TIMESTAMPING_RAW_HARDWARE,
- val & SOF_TIMESTAMPING_RAW_HARDWARE);
break;
case SO_RCVLOWAT:
@@ -1089,19 +1080,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
break;
case SO_TIMESTAMPING:
- v.val = 0;
- if (sock_flag(sk, SOCK_TIMESTAMPING_TX_HARDWARE))
- v.val |= SOF_TIMESTAMPING_TX_HARDWARE;
- if (sock_flag(sk, SOCK_TIMESTAMPING_TX_SOFTWARE))
- v.val |= SOF_TIMESTAMPING_TX_SOFTWARE;
- if (sock_flag(sk, SOCK_TIMESTAMPING_RX_HARDWARE))
- v.val |= SOF_TIMESTAMPING_RX_HARDWARE;
- if (sock_flag(sk, SOCK_TIMESTAMPING_RX_SOFTWARE))
- v.val |= SOF_TIMESTAMPING_RX_SOFTWARE;
- if (sock_flag(sk, SOCK_TIMESTAMPING_SOFTWARE))
- v.val |= SOF_TIMESTAMPING_SOFTWARE;
- if (sock_flag(sk, SOCK_TIMESTAMPING_RAW_HARDWARE))
- v.val |= SOF_TIMESTAMPING_RAW_HARDWARE;
+ v.val = sk->sk_tsflags;
break;
case SO_RCVTIMEO:
diff --git a/net/socket.c b/net/socket.c
index dc0cc5d..255d9b8 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -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)
--
2.0.0.526.g5318336
--
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