Merge branch 'filter-next'

Alexei Starovoitov says:

====================
net: filter: split sk_filter into socket and bpf, cleanup names

The main goal of the series is to split 'struct sk_filter' into socket and
bpf parts and cleanup names in the following way:
- everything that deals with sockets keeps 'sk_*' prefix
- everything that is pure BPF is changed to 'bpf_*' prefix

split 'struct sk_filter' into
struct sk_filter {
	atomic_t        refcnt;
	struct rcu_head rcu;
	struct bpf_prog *prog;
};
and
struct bpf_prog {
        u32                     jited:1,
                                len:31;
        struct sock_fprog_kern  *orig_prog;
        unsigned int            (*bpf_func)(const struct sk_buff *skb,
                                            const struct bpf_insn *filter);
        union {
                struct sock_filter      insns[0];
                struct bpf_insn         insnsi[0];
                struct work_struct      work;
        };
};
so that 'struct bpf_prog' can be used independent of sockets and cleans up
'unattached' bpf use cases:
isdn, ppp, team, seccomp, ptp, xt_bpf, cls_bpf, test_bpf
which don't need refcnt/rcu fields.

It's a follow up to the rcu cleanup started by Pablo in
commit 34c5bd66e5 ("net: filter: don't release unattached filter through call_rcu()")

Patch 1 - cleans up socket memory charging and makes it possible for functions
  sk(bpf)_migrate_filter(), sk(bpf)_prepare_filter() to be socket independent
Patches 2-4 - trivial renames
Patch 5 - sk_filter split and renames of related sk_*() functions
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 14 deletions

diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index 62f0688d45a5..c4198fa490bf 100644
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -379,12 +379,12 @@ isdn_ppp_release(int min, struct file *file)
 #endif
 #ifdef CONFIG_IPPP_FILTER
 	if (is->pass_filter) {
-		sk_unattached_filter_destroy(is->pass_filter);
+		bpf_prog_destroy(is->pass_filter);
 		is->pass_filter = NULL;
 	}
 
 	if (is->active_filter) {
-		sk_unattached_filter_destroy(is->active_filter);
+		bpf_prog_destroy(is->active_filter);
 		is->active_filter = NULL;
 	}
 #endif
@@ -639,12 +639,11 @@ isdn_ppp_ioctl(int min, struct file *file, unsigned int cmd, unsigned long arg)
 		fprog.filter = code;
 
 		if (is->pass_filter) {
-			sk_unattached_filter_destroy(is->pass_filter);
+			bpf_prog_destroy(is->pass_filter);
 			is->pass_filter = NULL;
 		}
 		if (fprog.filter != NULL)
-			err = sk_unattached_filter_create(&is->pass_filter,
-							  &fprog);
+			err = bpf_prog_create(&is->pass_filter, &fprog);
 		else
 			err = 0;
 		kfree(code);
@@ -664,12 +663,11 @@ isdn_ppp_ioctl(int min, struct file *file, unsigned int cmd, unsigned long arg)
 		fprog.filter = code;
 
 		if (is->active_filter) {
-			sk_unattached_filter_destroy(is->active_filter);
+			bpf_prog_destroy(is->active_filter);
 			is->active_filter = NULL;
 		}
 		if (fprog.filter != NULL)
-			err = sk_unattached_filter_create(&is->active_filter,
-							  &fprog);
+			err = bpf_prog_create(&is->active_filter, &fprog);
 		else
 			err = 0;
 		kfree(code);
@@ -1174,14 +1172,14 @@ isdn_ppp_push_higher(isdn_net_dev *net_dev, isdn_net_local *lp, struct sk_buff *
 	}
 
 	if (is->pass_filter
-	    && SK_RUN_FILTER(is->pass_filter, skb) == 0) {
+	    && BPF_PROG_RUN(is->pass_filter, skb) == 0) {
 		if (is->debug & 0x2)
 			printk(KERN_DEBUG "IPPP: inbound frame filtered.\n");
 		kfree_skb(skb);
 		return;
 	}
 	if (!(is->active_filter
-	      && SK_RUN_FILTER(is->active_filter, skb) == 0)) {
+	      && BPF_PROG_RUN(is->active_filter, skb) == 0)) {
 		if (is->debug & 0x2)
 			printk(KERN_DEBUG "IPPP: link-active filter: resetting huptimer.\n");
 		lp->huptimer = 0;
@@ -1320,14 +1318,14 @@ isdn_ppp_xmit(struct sk_buff *skb, struct net_device *netdev)
 	}
 
 	if (ipt->pass_filter
-	    && SK_RUN_FILTER(ipt->pass_filter, skb) == 0) {
+	    && BPF_PROG_RUN(ipt->pass_filter, skb) == 0) {
 		if (ipt->debug & 0x4)
 			printk(KERN_DEBUG "IPPP: outbound frame filtered.\n");
 		kfree_skb(skb);
 		goto unlock;
 	}
 	if (!(ipt->active_filter
-	      && SK_RUN_FILTER(ipt->active_filter, skb) == 0)) {
+	      && BPF_PROG_RUN(ipt->active_filter, skb) == 0)) {
 		if (ipt->debug & 0x4)
 			printk(KERN_DEBUG "IPPP: link-active filter: resetting huptimer.\n");
 		lp->huptimer = 0;
@@ -1517,9 +1515,9 @@ int isdn_ppp_autodial_filter(struct sk_buff *skb, isdn_net_local *lp)
 	}
 
 	drop |= is->pass_filter
-		&& SK_RUN_FILTER(is->pass_filter, skb) == 0;
+		&& BPF_PROG_RUN(is->pass_filter, skb) == 0;
 	drop |= is->active_filter
-		&& SK_RUN_FILTER(is->active_filter, skb) == 0;
+		&& BPF_PROG_RUN(is->active_filter, skb) == 0;
 
 	skb_push(skb, IPPP_MAX_HEADER - 4);
 	return drop;