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net: ipv6: Hook into time based transmission

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Add a struct sockcm_cookie parameter to ip6_setup_cork() so
we can easily re-use the transmit_time field from struct inet_cork
for most paths, by copying the timestamp from the CMSG cookie.
This is later copied into the skb during __ip6_make_skb().

For the raw fast path, also pass the sockcm_cookie as a parameter
so we can just perform the copy at rawv6_send_hdrinc() directly.

Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jesus Sanchez-Palencia
2018-07-03 15:42:50 -07:00
committed by David S. Miller
parent bc969a9778
commit a818f75e31
3 changed files with 14 additions and 5 deletions
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7
net/ipv6/raw.c
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@@ -620,7 +620,7 @@ out:
static int rawv6_send_hdrinc(struct sock *sk, struct msghdr *msg, int length,
struct flowi6 *fl6, struct dst_entry **dstp,
unsigned int flags)
unsigned int flags, const struct sockcm_cookie *sockc)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct net *net = sock_net(sk);
@@ -650,6 +650,7 @@ static int rawv6_send_hdrinc(struct sock *sk, struct msghdr *msg, int length,
skb->protocol = htons(ETH_P_IPV6);
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
skb->tstamp = sockc->transmit_time;
skb_dst_set(skb, &rt->dst);
*dstp = NULL;
@@ -848,6 +849,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
fl6.flowi6_oif = sk->sk_bound_dev_if;
sockc.tsflags = sk->sk_tsflags;
sockc.transmit_time = 0;
if (msg->msg_controllen) {
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
@@ -921,7 +923,8 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
back_from_confirm:
if (inet->hdrincl)
err = rawv6_send_hdrinc(sk, msg, len, &fl6, &dst, msg->msg_flags);
err = rawv6_send_hdrinc(sk, msg, len, &fl6, &dst,
msg->msg_flags, &sockc);
else {
ipc6.opt = opt;
lock_sock(sk);