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Date: Fri, 20 Nov 2009 22:35:40 +0100
From: Eric Dumazet <eric.dumazet@...il.com>
To: Jarek Poplawski <jarkao2@...il.com>
CC: "David S. Miller" <davem@...emloft.net>,
Tom Herbert <therbert@...gle.com>,
Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next-2.6] net: Xmit Packet Steering (XPS)
Jarek Poplawski a écrit :
>
> There is one more problem: this will break things like act_mirred + ifb,
> and other cases using skb->iif e.g. for filtering on virtual devices at
> the xmit path.
>
Following patch might help us to locate real uses of this obscure field :)
[PATCH net-next-2.6] net: rename skb->iif to skb->skb_iif
To help grep games, rename iif to skb_iif
Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
---
drivers/net/ifb.c | 6 +++---
include/linux/skbuff.h | 4 ++--
include/net/pkt_cls.h | 4 ++--
net/core/dev.c | 6 +++---
net/core/skbuff.c | 2 +-
net/netlabel/netlabel_unlabeled.c | 2 +-
net/sched/act_mirred.c | 2 +-
net/sched/cls_flow.c | 2 +-
security/selinux/hooks.c | 6 +++---
security/smack/smack_lsm.c | 4 ++--
10 files changed, 19 insertions(+), 19 deletions(-)
diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index 69c2566..f4081c0 100644
--- a/drivers/net/ifb.c
+++ b/drivers/net/ifb.c
@@ -99,7 +99,7 @@ static void ri_tasklet(unsigned long dev)
stats->tx_bytes +=skb->len;
rcu_read_lock();
- skb->dev = dev_get_by_index_rcu(&init_net, skb->iif);
+ skb->dev = dev_get_by_index_rcu(&init_net, skb->skb_iif);
if (!skb->dev) {
rcu_read_unlock();
dev_kfree_skb(skb);
@@ -107,7 +107,7 @@ static void ri_tasklet(unsigned long dev)
break;
}
rcu_read_unlock();
- skb->iif = _dev->ifindex;
+ skb->skb_iif = _dev->ifindex;
if (from & AT_EGRESS) {
dp->st_rx_frm_egr++;
@@ -172,7 +172,7 @@ static netdev_tx_t ifb_xmit(struct sk_buff *skb, struct net_device *dev)
stats->rx_packets++;
stats->rx_bytes+=skb->len;
- if (!(from & (AT_INGRESS|AT_EGRESS)) || !skb->iif) {
+ if (!(from & (AT_INGRESS|AT_EGRESS)) || !skb->skb_iif) {
dev_kfree_skb(skb);
stats->rx_dropped++;
return NETDEV_TX_OK;
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 63f4742..89eed8c 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -299,7 +299,7 @@ typedef unsigned char *sk_buff_data_t;
* @nfctinfo: Relationship of this skb to the connection
* @nfct_reasm: netfilter conntrack re-assembly pointer
* @nf_bridge: Saved data about a bridged frame - see br_netfilter.c
- * @iif: ifindex of device we arrived on
+ * @skb_iif: ifindex of device we arrived on
* @queue_mapping: Queue mapping for multiqueue devices
* @tc_index: Traffic control index
* @tc_verd: traffic control verdict
@@ -366,7 +366,7 @@ struct sk_buff {
struct nf_bridge_info *nf_bridge;
#endif
- int iif;
+ int skb_iif;
#ifdef CONFIG_NET_SCHED
__u16 tc_index; /* traffic control index */
#ifdef CONFIG_NET_CLS_ACT
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 3dd210d..dd3031a 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -343,9 +343,9 @@ tcf_match_indev(struct sk_buff *skb, char *indev)
struct net_device *dev;
if (indev[0]) {
- if (!skb->iif)
+ if (!skb->skb_iif)
return 0;
- dev = __dev_get_by_index(dev_net(skb->dev), skb->iif);
+ dev = __dev_get_by_index(dev_net(skb->dev), skb->skb_iif);
if (!dev || strcmp(indev, dev->name))
return 0;
}
diff --git a/net/core/dev.c b/net/core/dev.c
index 9977288..09f3d6b 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2287,7 +2287,7 @@ static int ing_filter(struct sk_buff *skb)
if (MAX_RED_LOOP < ttl++) {
printk(KERN_WARNING
"Redir loop detected Dropping packet (%d->%d)\n",
- skb->iif, dev->ifindex);
+ skb->skb_iif, dev->ifindex);
return TC_ACT_SHOT;
}
@@ -2395,8 +2395,8 @@ int netif_receive_skb(struct sk_buff *skb)
if (netpoll_receive_skb(skb))
return NET_RX_DROP;
- if (!skb->iif)
- skb->iif = skb->dev->ifindex;
+ if (!skb->skb_iif)
+ skb->skb_iif = skb->dev->ifindex;
null_or_orig = NULL;
orig_dev = skb->dev;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 739b8f4..bfa3e78 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -549,7 +549,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
#endif
new->protocol = old->protocol;
new->mark = old->mark;
- new->iif = old->iif;
+ new->skb_iif = old->skb_iif;
__nf_copy(new, old);
#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index 3dfe2ba..98ed22e 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -1550,7 +1550,7 @@ int netlbl_unlabel_getattr(const struct sk_buff *skb,
struct netlbl_unlhsh_iface *iface;
rcu_read_lock();
- iface = netlbl_unlhsh_search_iface_def(skb->iif);
+ iface = netlbl_unlhsh_search_iface_def(skb->skb_iif);
if (iface == NULL)
goto unlabel_getattr_nolabel;
switch (family) {
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 7974793..d329170 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -185,7 +185,7 @@ static int tcf_mirred(struct sk_buff *skb, struct tc_action *a,
skb2->tc_verd = SET_TC_FROM(skb2->tc_verd, at);
skb2->dev = dev;
- skb2->iif = skb->dev->ifindex;
+ skb2->skb_iif = skb->dev->ifindex;
dev_queue_xmit(skb2);
err = 0;
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 9402a7f..e054c62 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -171,7 +171,7 @@ static u32 flow_get_proto_dst(const struct sk_buff *skb)
static u32 flow_get_iif(const struct sk_buff *skb)
{
- return skb->iif;
+ return skb->skb_iif;
}
static u32 flow_get_priority(const struct sk_buff *skb)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index bb230d5..83a4aad 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -4085,7 +4085,7 @@ static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb,
char *addrp;
COMMON_AUDIT_DATA_INIT(&ad, NET);
- ad.u.net.netif = skb->iif;
+ ad.u.net.netif = skb->skb_iif;
ad.u.net.family = family;
err = selinux_parse_skb(skb, &ad, &addrp, 1, NULL);
if (err)
@@ -4147,7 +4147,7 @@ static int selinux_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
return 0;
COMMON_AUDIT_DATA_INIT(&ad, NET);
- ad.u.net.netif = skb->iif;
+ ad.u.net.netif = skb->skb_iif;
ad.u.net.family = family;
err = selinux_parse_skb(skb, &ad, &addrp, 1, NULL);
if (err)
@@ -4159,7 +4159,7 @@ static int selinux_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
err = selinux_skb_peerlbl_sid(skb, family, &peer_sid);
if (err)
return err;
- err = selinux_inet_sys_rcv_skb(skb->iif, addrp, family,
+ err = selinux_inet_sys_rcv_skb(skb->skb_iif, addrp, family,
peer_sid, &ad);
if (err) {
selinux_netlbl_err(skb, err, 0);
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index c33b6bb..529c9ca 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -2602,7 +2602,7 @@ static int smack_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_NET);
ad.a.u.net.family = sk->sk_family;
- ad.a.u.net.netif = skb->iif;
+ ad.a.u.net.netif = skb->skb_iif;
ipv4_skb_to_auditdata(skb, &ad.a, NULL);
#endif
/*
@@ -2757,7 +2757,7 @@ static int smack_inet_conn_request(struct sock *sk, struct sk_buff *skb,
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_NET);
ad.a.u.net.family = family;
- ad.a.u.net.netif = skb->iif;
+ ad.a.u.net.netif = skb->skb_iif;
ipv4_skb_to_auditdata(skb, &ad.a, NULL);
#endif
/*
--
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