Merge branch 'filter-next'

Daniel Borkmann says:

====================
BPF updates

These were still in my queue. Please see individual patches for
details.

I have rebased these on top of current net-next with Andrew's
gcc union fixup [1] applied to avoid dealing with an unnecessary
merge conflict.

 [1] http://patchwork.ozlabs.org/patch/351577/
====================

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

Documentation/networking/filter.txt

@@ -833,6 +833,20 @@ loops and other CFG validation; second step starts from the first insn and
 descends all possible paths. It simulates execution of every insn and observes
 the state change of registers and stack.
 
+Testing
+-------
+
+Next to the BPF toolchain, the kernel also ships a test module that contains
+various test cases for classic and internal BPF that can be executed against
+the BPF interpreter and JIT compiler. It can be found in lib/test_bpf.c and
+enabled via Kconfig:
+
+  CONFIG_TEST_BPF=m
+
+After the module has been built and installed, the test suite can be executed
+via insmod or modprobe against 'test_bpf' module. Results of the test cases
+including timings in nsec can be found in the kernel log (dmesg).
+
 Misc
 ----
 

drivers/isdn/i4l/isdn_ppp.c

@@ -634,7 +634,7 @@ isdn_ppp_ioctl(int min, struct file *file, unsigned int cmd, unsigned long arg)
 #ifdef CONFIG_IPPP_FILTER
 	case PPPIOCSPASS:
 	{
-		struct sock_fprog fprog;
+		struct sock_fprog_kern fprog;
 		struct sock_filter *code;
 		int err, len = get_filter(argp, &code);
 
@@ -653,7 +653,7 @@ isdn_ppp_ioctl(int min, struct file *file, unsigned int cmd, unsigned long arg)
 	}
 	case PPPIOCSACTIVE:
 	{
-		struct sock_fprog fprog;
+		struct sock_fprog_kern fprog;
 		struct sock_filter *code;
 		int err, len = get_filter(argp, &code);
 

drivers/net/ppp/ppp_generic.c

@@ -757,7 +757,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 
 		err = get_filter(argp, &code);
 		if (err >= 0) {
-			struct sock_fprog fprog = {
+			struct sock_fprog_kern fprog = {
 				.len = err,
 				.filter = code,
 			};
@@ -778,7 +778,7 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 
 		err = get_filter(argp, &code);
 		if (err >= 0) {
-			struct sock_fprog fprog = {
+			struct sock_fprog_kern fprog = {
 				.len = err,
 				.filter = code,
 			};

drivers/net/team/team_mode_loadbalance.c

@@ -49,7 +49,7 @@ struct lb_port_mapping {
 struct lb_priv_ex {
 	struct team *team;
 	struct lb_port_mapping tx_hash_to_port_mapping[LB_TX_HASHTABLE_SIZE];
-	struct sock_fprog *orig_fprog;
+	struct sock_fprog_kern *orig_fprog;
 	struct {
 		unsigned int refresh_interval; /* in tenths of second */
 		struct delayed_work refresh_dw;
@@ -241,10 +241,10 @@ static int lb_bpf_func_get(struct team *team, struct team_gsetter_ctx *ctx)
 	return 0;
 }
 
-static int __fprog_create(struct sock_fprog **pfprog, u32 data_len,
+static int __fprog_create(struct sock_fprog_kern **pfprog, u32 data_len,
 			  const void *data)
 {
-	struct sock_fprog *fprog;
+	struct sock_fprog_kern *fprog;
 	struct sock_filter *filter = (struct sock_filter *) data;
 
 	if (data_len % sizeof(struct sock_filter))
@@ -262,7 +262,7 @@ static int __fprog_create(struct sock_fprog **pfprog, u32 data_len,
 	return 0;
 }
 
-static void __fprog_destroy(struct sock_fprog *fprog)
+static void __fprog_destroy(struct sock_fprog_kern *fprog)
 {
 	kfree(fprog->filter);
 	kfree(fprog);
@@ -273,7 +273,7 @@ static int lb_bpf_func_set(struct team *team, struct team_gsetter_ctx *ctx)
 	struct lb_priv *lb_priv = get_lb_priv(team);
 	struct sk_filter *fp = NULL;
 	struct sk_filter *orig_fp;
-	struct sock_fprog *fprog = NULL;
+	struct sock_fprog_kern *fprog = NULL;
 	int err;
 
 	if (ctx->data.bin_val.len) {

include/linux/filter.h

@@ -37,9 +37,6 @@
 #define BPF_CALL	0x80	/* function call */
 #define BPF_EXIT	0x90	/* function return */
 
-/* Placeholder/dummy for 0 */
-#define BPF_0		0
-
 /* Register numbers */
 enum {
 	BPF_REG_0 = 0,
@@ -191,7 +188,7 @@ int sk_convert_filter(struct sock_filter *prog, int len,
 		      struct sock_filter_int *new_prog, int *new_len);
 
 int sk_unattached_filter_create(struct sk_filter **pfp,
-				struct sock_fprog *fprog);
+				struct sock_fprog_kern *fprog);
 void sk_unattached_filter_destroy(struct sk_filter *fp);
 
 int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk);