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Date: Sun, 18 Sep 2022 09:43:21 +0000
From: Jian Shen <shenjian15@...wei.com>
To: <davem@...emloft.net>, <kuba@...nel.org>, <ecree.xilinx@...il.com>,
<andrew@...n.ch>, <hkallweit1@...il.com>,
<alexandr.lobakin@...el.com>, <saeed@...nel.org>, <leon@...nel.org>
CC: <netdev@...r.kernel.org>, <linuxarm@...wei.com>
Subject: [RFCv8 PATCH net-next 40/55] net: adjust the prototype of netif_skb_features()
The fcuntion netif_skb_features() using netdev_features_t as
parameters, and returns netdev_features_t directly. For the
prototype of netdev_features_t will be extended to be larger
than 8 bytes, so change the prototype of the function, change
the prototype of input features to 'netdev_features_t *', and
return the features pointer as output parameters.
Signed-off-by: Jian Shen <shenjian15@...wei.com>
---
drivers/net/xen-netfront.c | 4 +++-
include/linux/netdevice.h | 2 +-
net/core/dev.c | 22 +++++++++++-----------
net/core/netpoll.c | 2 +-
net/ipv4/ip_output.c | 2 +-
net/ipv6/ip6_output.c | 2 +-
net/sched/sch_cake.c | 3 ++-
net/sched/sch_netem.c | 3 ++-
net/sched/sch_taprio.c | 3 ++-
net/sched/sch_tbf.c | 3 ++-
10 files changed, 26 insertions(+), 20 deletions(-)
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index ace8ebaaaabf..fedbd35aa1c1 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -719,6 +719,7 @@ static netdev_tx_t xennet_start_xmit(struct sk_buff *skb, struct net_device *dev
struct netfront_queue *queue = NULL;
struct xennet_gnttab_make_txreq info = { };
unsigned int num_queues = dev->real_num_tx_queues;
+ netdev_features_t features;
u16 queue_index;
struct sk_buff *nskb;
@@ -773,9 +774,10 @@ static netdev_tx_t xennet_start_xmit(struct sk_buff *skb, struct net_device *dev
spin_lock_irqsave(&queue->tx_lock, flags);
+ netif_skb_features(skb, &features);
if (unlikely(!netif_carrier_ok(dev) ||
(slots > 1 && !xennet_can_sg(dev)) ||
- netif_needs_gso(skb, netif_skb_features(skb)))) {
+ netif_needs_gso(skb, features))) {
spin_unlock_irqrestore(&queue->tx_lock, flags);
goto drop;
}
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 68f950f5a36b..75a839cf5cd2 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4915,7 +4915,7 @@ void netif_stacked_transfer_operstate(const struct net_device *rootdev,
netdev_features_t passthru_features_check(struct sk_buff *skb,
struct net_device *dev,
netdev_features_t features);
-netdev_features_t netif_skb_features(struct sk_buff *skb);
+void netif_skb_features(struct sk_buff *skb, netdev_features_t *features);
static inline bool net_gso_ok(netdev_features_t features, int gso_type)
{
diff --git a/net/core/dev.c b/net/core/dev.c
index e36347e0abe7..695b724a4054 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3546,36 +3546,36 @@ static netdev_features_t gso_features_check(const struct sk_buff *skb,
return features;
}
-netdev_features_t netif_skb_features(struct sk_buff *skb)
+void netif_skb_features(struct sk_buff *skb, netdev_features_t *features)
{
struct net_device *dev = skb->dev;
- netdev_features_t features = dev->features;
netdev_features_t tmp;
+ netdev_features_copy(*features, dev->features);
+
if (skb_is_gso(skb))
- features = gso_features_check(skb, dev, features);
+ *features = gso_features_check(skb, dev, *features);
/* If encapsulation offload request, verify we are testing
* hardware encapsulation features instead of standard
* features for the netdev
*/
if (skb->encapsulation)
- netdev_features_mask(features, dev->hw_enc_features);
+ netdev_features_mask(*features, dev->hw_enc_features);
if (skb_vlan_tagged(skb)) {
netdev_features_or(tmp, dev->vlan_features,
netdev_tx_vlan_features);
- netdev_intersect_features(&features, &features, &tmp);
+ netdev_intersect_features(features, features, &tmp);
}
if (dev->netdev_ops->ndo_features_check)
- tmp = dev->netdev_ops->ndo_features_check(skb, dev, features);
+ tmp = dev->netdev_ops->ndo_features_check(skb, dev, *features);
else
- tmp = dflt_features_check(skb, dev, features);
- netdev_features_mask(features, tmp);
+ tmp = dflt_features_check(skb, dev, *features);
+ netdev_features_mask(*features, tmp);
- harmonize_features(skb, &features);
- return features;
+ harmonize_features(skb, features);
}
EXPORT_SYMBOL(netif_skb_features);
@@ -3659,7 +3659,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
{
netdev_features_t features;
- features = netif_skb_features(skb);
+ netif_skb_features(skb, &features);
skb = validate_xmit_vlan(skb, features);
if (unlikely(!skb))
goto out_null;
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 9be762e1d042..94dd11aa1b83 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -77,7 +77,7 @@ static netdev_tx_t netpoll_start_xmit(struct sk_buff *skb,
netdev_tx_t status = NETDEV_TX_OK;
netdev_features_t features;
- features = netif_skb_features(skb);
+ netif_skb_features(skb, &features);
if (skb_vlan_tag_present(skb) &&
!vlan_hw_offload_capable(features, skb->vlan_proto)) {
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index e128d2957d3f..8e9993eae1a4 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -262,7 +262,7 @@ static int ip_finish_output_gso(struct net *net, struct sock *sk,
* bridged to a NETIF_F_TSO tunnel stacked over an interface with an
* insufficient MTU.
*/
- features = netif_skb_features(skb);
+ netif_skb_features(skb, &features);
BUILD_BUG_ON(sizeof(*IPCB(skb)) > SKB_GSO_CB_OFFSET);
netdev_features_clear(features, NETIF_F_GSO_MASK);
segs = skb_gso_segment(skb, features);
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 40ca76257ec1..0ac686957ab7 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -148,7 +148,7 @@ ip6_finish_output_gso_slowpath_drop(struct net *net, struct sock *sk,
* describing the cases where GSO segment length exceeds the
* egress MTU.
*/
- features = netif_skb_features(skb);
+ netif_skb_features(skb, &features);
netdev_features_clear(features, NETIF_F_GSO_MASK);
segs = skb_gso_segment(skb, features);
if (IS_ERR_OR_NULL(segs)) {
diff --git a/net/sched/sch_cake.c b/net/sched/sch_cake.c
index 022fd85394e8..837efd4c786f 100644
--- a/net/sched/sch_cake.c
+++ b/net/sched/sch_cake.c
@@ -1740,9 +1740,10 @@ static s32 cake_enqueue(struct sk_buff *skb, struct Qdisc *sch,
if (skb_is_gso(skb) && q->rate_flags & CAKE_FLAG_SPLIT_GSO) {
struct sk_buff *segs, *nskb;
- netdev_features_t features = netif_skb_features(skb);
+ netdev_features_t features;
unsigned int slen = 0, numsegs = 0;
+ netif_skb_features(skb, &features);
netdev_features_clear(features, NETIF_F_GSO_MASK);
segs = skb_gso_segment(skb, features);
if (IS_ERR_OR_NULL(segs))
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 55084f0f2f57..cb253eb3a936 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -412,9 +412,10 @@ static void tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
static struct sk_buff *netem_segment(struct sk_buff *skb, struct Qdisc *sch,
struct sk_buff **to_free)
{
+ netdev_features_t features;
struct sk_buff *segs;
- netdev_features_t features = netif_skb_features(skb);
+ netif_skb_features(skb, &features);
netdev_features_clear(features, NETIF_F_GSO_MASK);
segs = skb_gso_segment(skb, features);
diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c
index dc8b114388e2..96bff2fdeecb 100644
--- a/net/sched/sch_taprio.c
+++ b/net/sched/sch_taprio.c
@@ -459,10 +459,11 @@ static int taprio_enqueue(struct sk_buff *skb, struct Qdisc *sch,
*/
if (skb_is_gso(skb) && !FULL_OFFLOAD_IS_ENABLED(q->flags)) {
unsigned int slen = 0, numsegs = 0, len = qdisc_pkt_len(skb);
- netdev_features_t features = netif_skb_features(skb);
struct sk_buff *segs, *nskb;
+ netdev_features_t features;
int ret;
+ netif_skb_features(skb, &features);
netdev_features_clear(features, NETIF_F_GSO_MASK);
segs = skb_gso_segment(skb, features);
if (IS_ERR_OR_NULL(segs))
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index 5c883b639ed7..ce0bb68b02f3 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -207,10 +207,11 @@ static int tbf_segment(struct sk_buff *skb, struct Qdisc *sch,
{
struct tbf_sched_data *q = qdisc_priv(sch);
struct sk_buff *segs, *nskb;
- netdev_features_t features = netif_skb_features(skb);
+ netdev_features_t features;
unsigned int len = 0, prev_len = qdisc_pkt_len(skb);
int ret, nb;
+ netif_skb_features(skb, &features);
netdev_features_clear(features, NETIF_F_GSO_MASK);
segs = skb_gso_segment(skb, features);
--
2.33.0
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