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authorOliver Hartkopp <socketcan@hartkopp.net>2010-08-17 08:59:14 +0000
committerDavid S. Miller <davem@davemloft.net>2010-08-19 00:08:30 -0700
commit2244d07bfa2097cb00600da91c715a8aa547917e (patch)
tree44d67d9ffba3697fffeb05c13e88aa76ebc3fd4a /net
parent4d5870ec103e6569851b9710f0093f072b08439a (diff)
net: simplify flags for tx timestamping
This patch removes the abstraction introduced by the union skb_shared_tx in the shared skb data. The access of the different union elements at several places led to some confusion about accessing the shared tx_flags e.g. in skb_orphan_try(). http://marc.info/?l=linux-netdev&m=128084897415886&w=2 Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/can/raw.c4
-rw-r--r--net/core/dev.c6
-rw-r--r--net/core/skbuff.c2
-rw-r--r--net/ipv4/icmp.c4
-rw-r--r--net/ipv4/ip_output.c6
-rw-r--r--net/ipv4/raw.c2
-rw-r--r--net/ipv4/udp.c4
-rw-r--r--net/packet/af_packet.c4
-rw-r--r--net/socket.c9
9 files changed, 20 insertions, 21 deletions
diff --git a/net/can/raw.c b/net/can/raw.c
index a10e3338f084..7d77e67e57af 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -647,12 +647,12 @@ 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(msg, sk, skb_tx(skb));
+ err = sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
if (err < 0)
goto free_skb;
/* to be able to check the received tx sock reference in raw_rcv() */
- skb_tx(skb)->prevent_sk_orphan = 1;
+ skb_shinfo(skb)->tx_flags |= SKBTX_DRV_NEEDS_SK_REF;
skb->dev = dev;
skb->sk = sk;
diff --git a/net/core/dev.c b/net/core/dev.c
index 586a11cb4398..c1dc8a95f6ff 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1902,14 +1902,14 @@ static int dev_gso_segment(struct sk_buff *skb)
/*
* Try to orphan skb early, right before transmission by the device.
- * We cannot orphan skb if tx timestamp is requested, since
- * drivers need to call skb_tstamp_tx() to send the timestamp.
+ * We cannot orphan skb if tx timestamp is requested or the sk-reference
+ * is needed on driver level for other reasons, e.g. see net/can/raw.c
*/
static inline void skb_orphan_try(struct sk_buff *skb)
{
struct sock *sk = skb->sk;
- if (sk && !skb_tx(skb)->flags) {
+ if (sk && !skb_shinfo(skb)->tx_flags) {
/* skb_tx_hash() wont be able to get sk.
* We copy sk_hash into skb->rxhash
*/
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 3a2513f0d0c3..99ef721f773d 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3016,7 +3016,7 @@ void skb_tstamp_tx(struct sk_buff *orig_skb,
} else {
/*
* no hardware time stamps available,
- * so keep the skb_shared_tx and only
+ * so keep the shared tx_flags and only
* store software time stamp
*/
skb->tstamp = ktime_get_real();
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index a0d847c7cba5..96bc7f9475a3 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -379,7 +379,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
inet->tos = ip_hdr(skb)->tos;
daddr = ipc.addr = rt->rt_src;
ipc.opt = NULL;
- ipc.shtx.flags = 0;
+ ipc.tx_flags = 0;
if (icmp_param->replyopts.optlen) {
ipc.opt = &icmp_param->replyopts;
if (ipc.opt->srr)
@@ -538,7 +538,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
inet_sk(sk)->tos = tos;
ipc.addr = iph->saddr;
ipc.opt = &icmp_param.replyopts;
- ipc.shtx.flags = 0;
+ ipc.tx_flags = 0;
{
struct flowi fl = {
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 04b69896df5f..e807492f1777 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -953,7 +953,7 @@ alloc_new_skb:
else
/* only the initial fragment is
time stamped */
- ipc->shtx.flags = 0;
+ ipc->tx_flags = 0;
}
if (skb == NULL)
goto error;
@@ -964,7 +964,7 @@ alloc_new_skb:
skb->ip_summed = csummode;
skb->csum = 0;
skb_reserve(skb, hh_len);
- *skb_tx(skb) = ipc->shtx;
+ skb_shinfo(skb)->tx_flags = ipc->tx_flags;
/*
* Find where to start putting bytes.
@@ -1384,7 +1384,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
daddr = ipc.addr = rt->rt_src;
ipc.opt = NULL;
- ipc.shtx.flags = 0;
+ ipc.tx_flags = 0;
if (replyopts.opt.optlen) {
ipc.opt = &replyopts.opt;
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 009a7b2aa1ef..1f85ef289895 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -505,7 +505,7 @@ static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
ipc.addr = inet->inet_saddr;
ipc.opt = NULL;
- ipc.shtx.flags = 0;
+ ipc.tx_flags = 0;
ipc.oif = sk->sk_bound_dev_if;
if (msg->msg_controllen) {
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 32e0bef60d0a..86e757e162ee 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -797,7 +797,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
return -EOPNOTSUPP;
ipc.opt = NULL;
- ipc.shtx.flags = 0;
+ ipc.tx_flags = 0;
if (up->pending) {
/*
@@ -845,7 +845,7 @@ 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(msg, sk, &ipc.shtx);
+ err = sock_tx_timestamp(sk, &ipc.tx_flags);
if (err)
return err;
if (msg->msg_controllen) {
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 9a17f28b1253..3616f27b9d46 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -488,7 +488,7 @@ retry:
skb->dev = dev;
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
- err = sock_tx_timestamp(msg, sk, skb_tx(skb));
+ err = sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
if (err < 0)
goto out_unlock;
@@ -1209,7 +1209,7 @@ 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(msg, sk, skb_tx(skb));
+ err = sock_tx_timestamp(sk, &skb_shinfo(skb)->tx_flags);
if (err < 0)
goto out_free;
diff --git a/net/socket.c b/net/socket.c
index 2270b941bcc7..7848d12f5e4d 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -535,14 +535,13 @@ void sock_release(struct socket *sock)
}
EXPORT_SYMBOL(sock_release);
-int sock_tx_timestamp(struct msghdr *msg, struct sock *sk,
- union skb_shared_tx *shtx)
+int sock_tx_timestamp(struct sock *sk, __u8 *tx_flags)
{
- shtx->flags = 0;
+ *tx_flags = 0;
if (sock_flag(sk, SOCK_TIMESTAMPING_TX_HARDWARE))
- shtx->hardware = 1;
+ *tx_flags |= SKBTX_HW_TSTAMP;
if (sock_flag(sk, SOCK_TIMESTAMPING_TX_SOFTWARE))
- shtx->software = 1;
+ *tx_flags |= SKBTX_SW_TSTAMP;
return 0;
}
EXPORT_SYMBOL(sock_tx_timestamp);

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