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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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11
net/ipv6/ip6_output.c
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@@ -1158,7 +1158,8 @@ static void ip6_append_data_mtu(unsigned int *mtu,
static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork,
struct inet6_cork *v6_cork, struct ipcm6_cookie *ipc6,
struct rt6_info *rt, struct flowi6 *fl6)
struct rt6_info *rt, struct flowi6 *fl6,
const struct sockcm_cookie *sockc)
{
struct ipv6_pinfo *np = inet6_sk(sk);
unsigned int mtu;
@@ -1226,6 +1227,8 @@ static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork,
cork->base.flags |= IPCORK_ALLFRAG;
cork->base.length = 0;
cork->base.transmit_time = sockc->transmit_time;
return 0;
}
@@ -1575,7 +1578,7 @@ int ip6_append_data(struct sock *sk,
* setup for corking
*/
err = ip6_setup_cork(sk, &inet->cork, &np->cork,
ipc6, rt, fl6);
ipc6, rt, fl6, sockc);
if (err)
return err;
@@ -1673,6 +1676,8 @@ struct sk_buff *__ip6_make_skb(struct sock *sk,
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
skb->tstamp = cork->base.transmit_time;
skb_dst_set(skb, dst_clone(&rt->dst));
IP6_UPD_PO_STATS(net, rt->rt6i_idev, IPSTATS_MIB_OUT, skb->len);
if (proto == IPPROTO_ICMPV6) {
@@ -1765,7 +1770,7 @@ struct sk_buff *ip6_make_skb(struct sock *sk,
cork->base.opt = NULL;
cork->base.dst = NULL;
v6_cork.opt = NULL;
err = ip6_setup_cork(sk, cork, &v6_cork, ipc6, rt, fl6);
err = ip6_setup_cork(sk, cork, &v6_cork, ipc6, rt, fl6, sockc);
if (err) {
ip6_cork_release(cork, &v6_cork);
return ERR_PTR(err);