summaryrefslogtreecommitdiff
path: root/net
diff options
context:
space:
mode:
authorMartin KaFai Lau <kafai@fb.com>2022-03-02 22:55:31 +0300
committerDavid S. Miller <davem@davemloft.net>2022-03-03 17:38:48 +0300
commitde799101519aad23c6096041ba2744d7b5517e6a (patch)
tree01f4d21c7b918eb2d15a124ea581ef7a0671e935 /net
parenta1ac9c8acec1605c6b43af418f79facafdced680 (diff)
downloadlinux-de799101519aad23c6096041ba2744d7b5517e6a.tar.xz
net: Add skb_clear_tstamp() to keep the mono delivery_time
Right now, skb->tstamp is reset to 0 whenever the skb is forwarded. If skb->tstamp has the mono delivery_time, clearing it can hurt the performance when it finally transmits out to fq@phy-dev. The earlier patch added a skb->mono_delivery_time bit to flag the skb->tstamp carrying the mono delivery_time. This patch adds skb_clear_tstamp() helper which keeps the mono delivery_time and clears everything else. The delivery_time clearing will be postponed until the stack knows the skb will be delivered locally. It will be done in a latter patch. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/bridge/br_forward.c2
-rw-r--r--net/core/filter.c6
-rw-r--r--net/core/skbuff.c2
-rw-r--r--net/ipv4/ip_forward.c2
-rw-r--r--net/ipv6/ip6_output.c2
-rw-r--r--net/netfilter/ipvs/ip_vs_xmit.c6
-rw-r--r--net/netfilter/nf_dup_netdev.c2
-rw-r--r--net/netfilter/nf_flow_table_ip.c4
-rw-r--r--net/netfilter/nft_fwd_netdev.c2
-rw-r--r--net/openvswitch/vport.c2
-rw-r--r--net/xfrm/xfrm_interface.c2
11 files changed, 16 insertions, 16 deletions
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index ec646656dbf1..02bb620d3b8d 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -62,7 +62,7 @@ EXPORT_SYMBOL_GPL(br_dev_queue_push_xmit);
int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
{
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
return NF_HOOK(NFPROTO_BRIDGE, NF_BR_POST_ROUTING,
net, sk, skb, NULL, skb->dev,
br_dev_queue_push_xmit);
diff --git a/net/core/filter.c b/net/core/filter.c
index 65869fd510e8..cfcf9b4d1ec2 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2107,7 +2107,7 @@ static inline int __bpf_tx_skb(struct net_device *dev, struct sk_buff *skb)
}
skb->dev = dev;
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
dev_xmit_recursion_inc();
ret = dev_queue_xmit(skb);
@@ -2176,7 +2176,7 @@ static int bpf_out_neigh_v6(struct net *net, struct sk_buff *skb,
}
skb->dev = dev;
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
if (unlikely(skb_headroom(skb) < hh_len && dev->header_ops)) {
skb = skb_expand_head(skb, hh_len);
@@ -2274,7 +2274,7 @@ static int bpf_out_neigh_v4(struct net *net, struct sk_buff *skb,
}
skb->dev = dev;
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
if (unlikely(skb_headroom(skb) < hh_len && dev->header_ops)) {
skb = skb_expand_head(skb, hh_len);
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index b32c5d782fe1..9abb0028309f 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -5381,7 +5381,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet)
ipvs_reset(skb);
skb->mark = 0;
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
}
EXPORT_SYMBOL_GPL(skb_scrub_packet);
diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c
index 00ec819f949b..92ba3350274b 100644
--- a/net/ipv4/ip_forward.c
+++ b/net/ipv4/ip_forward.c
@@ -79,7 +79,7 @@ static int ip_forward_finish(struct net *net, struct sock *sk, struct sk_buff *s
if (unlikely(opt->optlen))
ip_forward_options(skb);
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
return dst_output(net, sk, skb);
}
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index dad4e3d0492e..50db9b20d746 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -440,7 +440,7 @@ static inline int ip6_forward_finish(struct net *net, struct sock *sk,
}
#endif
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
return dst_output(net, sk, skb);
}
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index d2e5a8f644b8..029171379884 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -610,7 +610,7 @@ static inline int ip_vs_tunnel_xmit_prepare(struct sk_buff *skb,
nf_reset_ct(skb);
skb_forward_csum(skb);
if (skb->dev)
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
}
return ret;
}
@@ -652,7 +652,7 @@ static inline int ip_vs_nat_send_or_cont(int pf, struct sk_buff *skb,
if (!local) {
skb_forward_csum(skb);
if (skb->dev)
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
NF_HOOK(pf, NF_INET_LOCAL_OUT, cp->ipvs->net, NULL, skb,
NULL, skb_dst(skb)->dev, dst_output);
} else
@@ -674,7 +674,7 @@ static inline int ip_vs_send_or_cont(int pf, struct sk_buff *skb,
ip_vs_drop_early_demux_sk(skb);
skb_forward_csum(skb);
if (skb->dev)
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
NF_HOOK(pf, NF_INET_LOCAL_OUT, cp->ipvs->net, NULL, skb,
NULL, skb_dst(skb)->dev, dst_output);
} else
diff --git a/net/netfilter/nf_dup_netdev.c b/net/netfilter/nf_dup_netdev.c
index a579e59ee5c5..7873bd1389c3 100644
--- a/net/netfilter/nf_dup_netdev.c
+++ b/net/netfilter/nf_dup_netdev.c
@@ -19,7 +19,7 @@ static void nf_do_netdev_egress(struct sk_buff *skb, struct net_device *dev)
skb_push(skb, skb->mac_len);
skb->dev = dev;
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
dev_queue_xmit(skb);
}
diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c
index 889cf88d3dba..f1d387129f02 100644
--- a/net/netfilter/nf_flow_table_ip.c
+++ b/net/netfilter/nf_flow_table_ip.c
@@ -376,7 +376,7 @@ nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb,
nf_flow_nat_ip(flow, skb, thoff, dir, iph);
ip_decrease_ttl(iph);
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
if (flow_table->flags & NF_FLOWTABLE_COUNTER)
nf_ct_acct_update(flow->ct, tuplehash->tuple.dir, skb->len);
@@ -611,7 +611,7 @@ nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb,
nf_flow_nat_ipv6(flow, skb, dir, ip6h);
ip6h->hop_limit--;
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
if (flow_table->flags & NF_FLOWTABLE_COUNTER)
nf_ct_acct_update(flow->ct, tuplehash->tuple.dir, skb->len);
diff --git a/net/netfilter/nft_fwd_netdev.c b/net/netfilter/nft_fwd_netdev.c
index 619e394a91de..08e7a289738e 100644
--- a/net/netfilter/nft_fwd_netdev.c
+++ b/net/netfilter/nft_fwd_netdev.c
@@ -145,7 +145,7 @@ static void nft_fwd_neigh_eval(const struct nft_expr *expr,
return;
skb->dev = dev;
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
neigh_xmit(neigh_table, dev, addr, skb);
out:
regs->verdict.code = verdict;
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index cf2ce5812489..82a74f998966 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -507,7 +507,7 @@ void ovs_vport_send(struct vport *vport, struct sk_buff *skb, u8 mac_proto)
}
skb->dev = vport->dev;
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
vport->ops->send(skb);
return;
diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c
index 57448fc519fc..4991e99ced9a 100644
--- a/net/xfrm/xfrm_interface.c
+++ b/net/xfrm/xfrm_interface.c
@@ -190,7 +190,7 @@ static void xfrmi_dev_uninit(struct net_device *dev)
static void xfrmi_scrub_packet(struct sk_buff *skb, bool xnet)
{
- skb->tstamp = 0;
+ skb_clear_tstamp(skb);
skb->pkt_type = PACKET_HOST;
skb->skb_iif = 0;
skb->ignore_df = 0;