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authorAlexei Starovoitov <ast@plumgrid.com>2014-07-30 20:34:16 -0700
committerDavid S. Miller <davem@davemloft.net>2014-08-02 15:03:58 -0700
commit7ae457c1e5b45a1b826fad9d62b32191d2bdcfdb (patch)
treedcb1aba57530e6c9426a81758173ca146ffafcaf /drivers/net/ppp/ppp_generic.c
parentnet: filter: rename sk_convert_filter() -> bpf_convert_filter() (diff)
downloadlinux-dev-7ae457c1e5b45a1b826fad9d62b32191d2bdcfdb.tar.xz
linux-dev-7ae457c1e5b45a1b826fad9d62b32191d2bdcfdb.zip
net: filter: split 'struct sk_filter' into socket and bpf parts
clean up names related to socket filtering and bpf 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 split SK_RUN_FILTER macro into: SK_RUN_FILTER to be used with 'struct sk_filter *' and BPF_PROG_RUN to be used with 'struct bpf_prog *' __sk_filter_release(struct sk_filter *) gains __bpf_prog_release(struct bpf_prog *) helper function also perform related renames for the functions that work with 'struct bpf_prog *', since they're on the same lines: sk_filter_size -> bpf_prog_size sk_filter_select_runtime -> bpf_prog_select_runtime sk_filter_free -> bpf_prog_free sk_unattached_filter_create -> bpf_prog_create sk_unattached_filter_destroy -> bpf_prog_destroy sk_store_orig_filter -> bpf_prog_store_orig_filter sk_release_orig_filter -> bpf_release_orig_filter __sk_migrate_filter -> bpf_migrate_filter __sk_prepare_filter -> bpf_prepare_filter API for attaching classic BPF to a socket stays the same: sk_attach_filter(prog, struct sock *)/sk_detach_filter(struct sock *) and SK_RUN_FILTER(struct sk_filter *, ctx) to execute a program which is used by sockets, tun, af_packet API for 'unattached' BPF programs becomes: bpf_prog_create(struct bpf_prog **)/bpf_prog_destroy(struct bpf_prog *) and BPF_PROG_RUN(struct bpf_prog *, ctx) to execute a program which is used by isdn, ppp, team, seccomp, ptp, xt_bpf, cls_bpf, test_bpf Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ppp/ppp_generic.c')
-rw-r--r--drivers/net/ppp/ppp_generic.c28
1 files changed, 14 insertions, 14 deletions
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 765248b42a0a..fa0d71727894 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -143,8 +143,8 @@ struct ppp {
struct sk_buff_head mrq; /* MP: receive reconstruction queue */
#endif /* CONFIG_PPP_MULTILINK */
#ifdef CONFIG_PPP_FILTER
- struct sk_filter *pass_filter; /* filter for packets to pass */
- struct sk_filter *active_filter;/* filter for pkts to reset idle */
+ struct bpf_prog *pass_filter; /* filter for packets to pass */
+ struct bpf_prog *active_filter; /* filter for pkts to reset idle */
#endif /* CONFIG_PPP_FILTER */
struct net *ppp_net; /* the net we belong to */
struct ppp_link_stats stats64; /* 64 bit network stats */
@@ -762,12 +762,12 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
ppp_lock(ppp);
if (ppp->pass_filter) {
- sk_unattached_filter_destroy(ppp->pass_filter);
+ bpf_prog_destroy(ppp->pass_filter);
ppp->pass_filter = NULL;
}
if (fprog.filter != NULL)
- err = sk_unattached_filter_create(&ppp->pass_filter,
- &fprog);
+ err = bpf_prog_create(&ppp->pass_filter,
+ &fprog);
else
err = 0;
kfree(code);
@@ -788,12 +788,12 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
ppp_lock(ppp);
if (ppp->active_filter) {
- sk_unattached_filter_destroy(ppp->active_filter);
+ bpf_prog_destroy(ppp->active_filter);
ppp->active_filter = NULL;
}
if (fprog.filter != NULL)
- err = sk_unattached_filter_create(&ppp->active_filter,
- &fprog);
+ err = bpf_prog_create(&ppp->active_filter,
+ &fprog);
else
err = 0;
kfree(code);
@@ -1205,7 +1205,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
a four-byte PPP header on each packet */
*skb_push(skb, 2) = 1;
if (ppp->pass_filter &&
- SK_RUN_FILTER(ppp->pass_filter, skb) == 0) {
+ BPF_PROG_RUN(ppp->pass_filter, skb) == 0) {
if (ppp->debug & 1)
netdev_printk(KERN_DEBUG, ppp->dev,
"PPP: outbound frame "
@@ -1215,7 +1215,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
}
/* if this packet passes the active filter, record the time */
if (!(ppp->active_filter &&
- SK_RUN_FILTER(ppp->active_filter, skb) == 0))
+ BPF_PROG_RUN(ppp->active_filter, skb) == 0))
ppp->last_xmit = jiffies;
skb_pull(skb, 2);
#else
@@ -1839,7 +1839,7 @@ ppp_receive_nonmp_frame(struct ppp *ppp, struct sk_buff *skb)
*skb_push(skb, 2) = 0;
if (ppp->pass_filter &&
- SK_RUN_FILTER(ppp->pass_filter, skb) == 0) {
+ BPF_PROG_RUN(ppp->pass_filter, skb) == 0) {
if (ppp->debug & 1)
netdev_printk(KERN_DEBUG, ppp->dev,
"PPP: inbound frame "
@@ -1848,7 +1848,7 @@ ppp_receive_nonmp_frame(struct ppp *ppp, struct sk_buff *skb)
return;
}
if (!(ppp->active_filter &&
- SK_RUN_FILTER(ppp->active_filter, skb) == 0))
+ BPF_PROG_RUN(ppp->active_filter, skb) == 0))
ppp->last_recv = jiffies;
__skb_pull(skb, 2);
} else
@@ -2829,12 +2829,12 @@ static void ppp_destroy_interface(struct ppp *ppp)
#endif /* CONFIG_PPP_MULTILINK */
#ifdef CONFIG_PPP_FILTER
if (ppp->pass_filter) {
- sk_unattached_filter_destroy(ppp->pass_filter);
+ bpf_prog_destroy(ppp->pass_filter);
ppp->pass_filter = NULL;
}
if (ppp->active_filter) {
- sk_unattached_filter_destroy(ppp->active_filter);
+ bpf_prog_destroy(ppp->active_filter);
ppp->active_filter = NULL;
}
#endif /* CONFIG_PPP_FILTER */