Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Alexei Starovoitov says:

====================
pull-request: bpf-next 2018-01-19

The following pull-request contains BPF updates for your *net-next* tree.

The main changes are:

1) bpf array map HW offload, from Jakub.

2) support for bpf_get_next_key() for LPM map, from Yonghong.

3) test_verifier now runs loaded programs, from Alexei.

4) xdp cpumap monitoring, from Jesper.

5) variety of tests, cleanups and small x64 JIT optimization, from Daniel.

6) user space can now retrieve HW JITed program, from Jiong.

Note there is a minor conflict between Russell's arm32 JIT fixes
and removal of bpf_jit_enable variable by Daniel which should
be resolved by keeping Russell's comment and removing that variable.
====================

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

1 files changed, 72 insertions, 0 deletions

diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c
index 6601c95a9258..0b482c0070e0 100644
--- a/tools/bpf/bpftool/common.c
+++ b/tools/bpf/bpftool/common.c
@@ -34,6 +34,7 @@
 /* Author: Jakub Kicinski <kubakici@wp.pl> */
 
 #include <errno.h>
+#include <fcntl.h>
 #include <fts.h>
 #include <libgen.h>
 #include <mntent.h>
@@ -433,6 +434,77 @@ ifindex_to_name_ns(__u32 ifindex, __u32 ns_dev, __u32 ns_ino, char *buf)
 	return if_indextoname(ifindex, buf);
 }
 
+static int read_sysfs_hex_int(char *path)
+{
+	char vendor_id_buf[8];
+	int len;
+	int fd;
+
+	fd = open(path, O_RDONLY);
+	if (fd < 0) {
+		p_err("Can't open %s: %s", path, strerror(errno));
+		return -1;
+	}
+
+	len = read(fd, vendor_id_buf, sizeof(vendor_id_buf));
+	close(fd);
+	if (len < 0) {
+		p_err("Can't read %s: %s", path, strerror(errno));
+		return -1;
+	}
+	if (len >= (int)sizeof(vendor_id_buf)) {
+		p_err("Value in %s too long", path);
+		return -1;
+	}
+
+	vendor_id_buf[len] = 0;
+
+	return strtol(vendor_id_buf, NULL, 0);
+}
+
+static int read_sysfs_netdev_hex_int(char *devname, const char *entry_name)
+{
+	char full_path[64];
+
+	snprintf(full_path, sizeof(full_path), "/sys/class/net/%s/device/%s",
+		 devname, entry_name);
+
+	return read_sysfs_hex_int(full_path);
+}
+
+const char *ifindex_to_bfd_name_ns(__u32 ifindex, __u64 ns_dev, __u64 ns_ino)
+{
+	char devname[IF_NAMESIZE];
+	int vendor_id;
+	int device_id;
+
+	if (!ifindex_to_name_ns(ifindex, ns_dev, ns_ino, devname)) {
+		p_err("Can't get net device name for ifindex %d: %s", ifindex,
+		      strerror(errno));
+		return NULL;
+	}
+
+	vendor_id = read_sysfs_netdev_hex_int(devname, "vendor");
+	if (vendor_id < 0) {
+		p_err("Can't get device vendor id for %s", devname);
+		return NULL;
+	}
+
+	switch (vendor_id) {
+	case 0x19ee:
+		device_id = read_sysfs_netdev_hex_int(devname, "device");
+		if (device_id != 0x4000 &&
+		    device_id != 0x6000 &&
+		    device_id != 0x6003)
+			p_info("Unknown NFP device ID, assuming it is NFP-6xxx arch");
+		return "NFP-6xxx";
+	default:
+		p_err("Can't get bfd arch name for device vendor id 0x%04x",
+		      vendor_id);
+		return NULL;
+	}
+}
+
 void print_dev_plain(__u32 ifindex, __u64 ns_dev, __u64 ns_inode)
 {
 	char name[IF_NAMESIZE];