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net: sock: make sock_tx_timestamp void

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Currently, sock_tx_timestamp() always returns 0. The comment that
describes the sock_tx_timestamp() function wrongly says that it
returns an error when an invalid argument is passed (from commit
20d4947353, ``net: socket infrastructure for SO_TIMESTAMPING'').
Make the function void, so that we can also remove all the unneeded
if conditions that check for such a _non-existant_ error case in the
output path.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann 2013-04-14 08:08:13 +00:00 committed by David S. Miller
parent 9d9f163c82
commit bf84a01063
7 changed files with 16 additions and 25 deletions
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5
include/net/sock.h
View File

@ -2159,10 +2159,9 @@ static inline void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,
* @sk: socket sending this packet
* @tx_flags: filled with instructions for time stamping
*
* Currently only depends on SOCK_TIMESTAMPING* flags. Returns error code if
* parameters are invalid.
* Currently only depends on SOCK_TIMESTAMPING* flags.
*/
extern int sock_tx_timestamp(struct sock *sk, __u8 *tx_flags);
extern void sock_tx_timestamp(struct sock *sk, __u8 *tx_flags);
/**
* sk_eat_skb - Release a skb if it is no longer needed

5
net/can/raw.c
View File

@ -711,9 +711,8 @@ static int raw_sendmsg(struct kiocb *iocb, struct socket *sock,
err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
if (err < 0)
goto free_skb;
err = sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
if (err < 0)
goto free_skb;
sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
skb->dev = dev;
skb->sk = sk;

5
net/ipv4/ping.c
View File

@ -514,9 +514,8 @@ static int ping_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
ipc.opt = NULL;
ipc.oif = sk->sk_bound_dev_if;
ipc.tx_flags = 0;
err = sock_tx_timestamp(sk, &ipc.tx_flags);
if (err)
return err;
sock_tx_timestamp(sk, &ipc.tx_flags);
if (msg->msg_controllen) {
err = ip_cmsg_send(sock_net(sk), msg, &ipc);

6
net/ipv4/udp.c
View File

@ -902,9 +902,9 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
ipc.addr = inet->inet_saddr;
ipc.oif = sk->sk_bound_dev_if;
err = sock_tx_timestamp(sk, &ipc.tx_flags);
if (err)
return err;
sock_tx_timestamp(sk, &ipc.tx_flags);
if (msg->msg_controllen) {
err = ip_cmsg_send(sock_net(sk), msg, &ipc);
if (err)

7
net/ipv6/ip6_output.c
View File

@ -1224,11 +1224,8 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
}
/* For UDP, check if TX timestamp is enabled */
if (sk->sk_type == SOCK_DGRAM) {
err = sock_tx_timestamp(sk, &tx_flags);
if (err)
goto error;
}
if (sk->sk_type == SOCK_DGRAM)
sock_tx_timestamp(sk, &tx_flags);
/*
* Let's try using as much space as possible.

10
net/packet/af_packet.c
View File

@ -1505,9 +1505,8 @@ retry:
skb->dev = dev;
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
err = sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
if (err < 0)
goto out_unlock;
sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
if (unlikely(extra_len == 4))
skb->no_fcs = 1;
@ -2312,9 +2311,8 @@ static int packet_snd(struct socket *sock,
err = skb_copy_datagram_from_iovec(skb, offset, msg->msg_iov, 0, len);
if (err)
goto out_free;
err = sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
if (err < 0)
goto out_free;
sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
if (!gso_type && (len > dev->mtu + reserve + extra_len)) {
/* Earlier code assumed this would be a VLAN pkt,

3
net/socket.c
View File

@ -600,7 +600,7 @@ void sock_release(struct socket *sock)
}
EXPORT_SYMBOL(sock_release);
int sock_tx_timestamp(struct sock *sk, __u8 *tx_flags)
void sock_tx_timestamp(struct sock *sk, __u8 *tx_flags)
{
*tx_flags = 0;
if (sock_flag(sk, SOCK_TIMESTAMPING_TX_HARDWARE))
@ -609,7 +609,6 @@ int sock_tx_timestamp(struct sock *sk, __u8 *tx_flags)
*tx_flags |= SKBTX_SW_TSTAMP;
if (sock_flag(sk, SOCK_WIFI_STATUS))
*tx_flags |= SKBTX_WIFI_STATUS;
return 0;
}
EXPORT_SYMBOL(sock_tx_timestamp);