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authorJesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>2018-07-03 15:42:49 -0700
committerDavid S. Miller <davem@davemloft.net>2018-07-04 22:30:27 +0900
commitbc969a977880511057053642a81371196303ca01 (patch)
treeb7340f31fc5705adefd32a92fe25c777c52f1bc6
parent80b14dee2bea128928537d61c333f24cb8cbb62f (diff)
net: ipv4: Hook into time based transmission
Add a transmit_time field to struct inet_cork, then copy the timestamp from the CMSG cookie at ip_setup_cork() so we can safely copy it into the skb later during __ip_make_skb(). For the raw fast path, just perform the copy at raw_send_hdrinc(). Signed-off-by: Richard Cochran <rcochran@linutronix.de> Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/inet_sock.h1
-rw-r--r--net/ipv4/icmp.c2
-rw-r--r--net/ipv4/ip_output.c3
-rw-r--r--net/ipv4/ping.c1
-rw-r--r--net/ipv4/raw.c2
-rw-r--r--net/ipv4/udp.c1
6 files changed, 10 insertions, 0 deletions
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index 83d5b3c2ac42..314be484c696 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -148,6 +148,7 @@ struct inet_cork {
__s16 tos;
char priority;
__u16 gso_size;
+ u64 transmit_time;
};
struct inet_cork_full {
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 1617604c9284..937239afd68d 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -437,6 +437,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
ipc.tx_flags = 0;
ipc.ttl = 0;
ipc.tos = -1;
+ ipc.sockc.transmit_time = 0;
if (icmp_param->replyopts.opt.opt.optlen) {
ipc.opt = &icmp_param->replyopts.opt;
@@ -715,6 +716,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
ipc.tx_flags = 0;
ipc.ttl = 0;
ipc.tos = -1;
+ ipc.sockc.transmit_time = 0;
rt = icmp_route_lookup(net, &fl4, skb_in, iph, saddr, tos, mark,
type, code, &icmp_param);
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 188cc586e7ff..570e3ebc3974 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -1154,6 +1154,7 @@ static int ip_setup_cork(struct sock *sk, struct inet_cork *cork,
cork->tos = ipc->tos;
cork->priority = ipc->priority;
cork->tx_flags = ipc->tx_flags;
+ cork->transmit_time = ipc->sockc.transmit_time;
return 0;
}
@@ -1414,6 +1415,7 @@ struct sk_buff *__ip_make_skb(struct sock *sk,
skb->priority = (cork->tos != -1) ? cork->priority: sk->sk_priority;
skb->mark = sk->sk_mark;
+ skb->tstamp = cork->transmit_time;
/*
* Steal rt from cork.dst to avoid a pair of atomic_inc/atomic_dec
* on dst refcount
@@ -1551,6 +1553,7 @@ void ip_send_unicast_reply(struct sock *sk, struct sk_buff *skb,
ipc.tx_flags = 0;
ipc.ttl = 0;
ipc.tos = -1;
+ ipc.sockc.transmit_time = 0;
if (replyopts.opt.opt.optlen) {
ipc.opt = &replyopts.opt;
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 2ed64bca54e3..b47492205507 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -746,6 +746,7 @@ static int ping_v4_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
ipc.tx_flags = 0;
ipc.ttl = 0;
ipc.tos = -1;
+ ipc.sockc.transmit_time = 0;
if (msg->msg_controllen) {
err = ip_cmsg_send(sk, msg, &ipc, false);
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index abb3c9490c55..446af7be2b55 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -381,6 +381,7 @@ static int raw_send_hdrinc(struct sock *sk, struct flowi4 *fl4,
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
+ skb->tstamp = sockc->transmit_time;
skb_dst_set(skb, &rt->dst);
*rtp = NULL;
@@ -562,6 +563,7 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
}
ipc.sockc.tsflags = sk->sk_tsflags;
+ ipc.sockc.transmit_time = 0;
ipc.addr = inet->inet_saddr;
ipc.opt = NULL;
ipc.tx_flags = 0;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 24e116ddae79..5c76ba0666ec 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -930,6 +930,7 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
ipc.tx_flags = 0;
ipc.ttl = 0;
ipc.tos = -1;
+ ipc.sockc.transmit_time = 0;
getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag;