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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-16 08:37:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-16 08:37:18 -0800
commit3c7a9f32f9392c9dfce24f33bdc6799852903e27 (patch)
tree15b5365c2f82d2bd041e202fdec4d2d3342e8559 /tools
parent747ae0a96f1a78b35c5a3d93ad37a16655e16340 (diff)
parentbf3f14d6342cfb37eab8f0cddd0e4d4063fd9fc9 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller: 1) In order to avoid problems in the future, make cgroup bpf overriding explicit using BPF_F_ALLOW_OVERRIDE. From Alexei Staovoitov. 2) LLC sets skb->sk without proper skb->destructor and this explodes, fix from Eric Dumazet. 3) Make sure when we have an ipv4 mapped source address, the destination is either also an ipv4 mapped address or ipv6_addr_any(). Fix from Jonathan T. Leighton. 4) Avoid packet loss in fec driver by programming the multicast filter more intelligently. From Rui Sousa. 5) Handle multiple threads invoking fanout_add(), fix from Eric Dumazet. 6) Since we can invoke the TCP input path in process context, without BH being disabled, we have to accomodate that in the locking of the TCP probe. Also from Eric Dumazet. 7) Fix erroneous emission of NETEVENT_DELAY_PROBE_TIME_UPDATE when we aren't even updating that sysctl value. From Marcus Huewe. 8) Fix endian bugs in ibmvnic driver, from Thomas Falcon. [ This is the second version of the pull that reverts the nested rhashtable changes that looked a bit too scary for this late in the release - Linus ] * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (27 commits) rhashtable: Revert nested table changes. ibmvnic: Fix endian errors in error reporting output ibmvnic: Fix endian error when requesting device capabilities net: neigh: Fix netevent NETEVENT_DELAY_PROBE_TIME_UPDATE notification net: xilinx_emaclite: fix freezes due to unordered I/O net: xilinx_emaclite: fix receive buffer overflow bpf: kernel header files need to be copied into the tools directory tcp: tcp_probe: use spin_lock_bh() uapi: fix linux/if_pppol2tp.h userspace compilation errors packet: fix races in fanout_add() ibmvnic: Fix initial MTU settings net: ethernet: ti: cpsw: fix cpsw assignment in resume kcm: fix a null pointer dereference in kcm_sendmsg() net: fec: fix multicast filtering hardware setup ipv6: Handle IPv4-mapped src to in6addr_any dst. ipv6: Inhibit IPv4-mapped src address on the wire. net/mlx5e: Disable preemption when doing TC statistics upcall rhashtable: Add nested tables tipc: Fix tipc_sk_reinit race conditions gfs2: Use rhashtable walk interface in glock_hash_walk ...
Diffstat (limited to 'tools')
-rw-r--r--tools/include/uapi/linux/bpf.h7
-rw-r--r--tools/lib/bpf/bpf.c4
-rw-r--r--tools/lib/bpf/bpf.h3
3 files changed, 12 insertions, 2 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 0eb0e87dbe9f..d2b0ac799d03 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -116,6 +116,12 @@ enum bpf_attach_type {
#define MAX_BPF_ATTACH_TYPE __MAX_BPF_ATTACH_TYPE
+/* If BPF_F_ALLOW_OVERRIDE flag is used in BPF_PROG_ATTACH command
+ * to the given target_fd cgroup the descendent cgroup will be able to
+ * override effective bpf program that was inherited from this cgroup
+ */
+#define BPF_F_ALLOW_OVERRIDE (1U << 0)
+
#define BPF_PSEUDO_MAP_FD 1
/* flags for BPF_MAP_UPDATE_ELEM command */
@@ -171,6 +177,7 @@ union bpf_attr {
__u32 target_fd; /* container object to attach to */
__u32 attach_bpf_fd; /* eBPF program to attach */
__u32 attach_type;
+ __u32 attach_flags;
};
} __attribute__((aligned(8)));
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index 3ddb58a36d3c..ae752fa4eaa7 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -168,7 +168,8 @@ int bpf_obj_get(const char *pathname)
return sys_bpf(BPF_OBJ_GET, &attr, sizeof(attr));
}
-int bpf_prog_attach(int prog_fd, int target_fd, enum bpf_attach_type type)
+int bpf_prog_attach(int prog_fd, int target_fd, enum bpf_attach_type type,
+ unsigned int flags)
{
union bpf_attr attr;
@@ -176,6 +177,7 @@ int bpf_prog_attach(int prog_fd, int target_fd, enum bpf_attach_type type)
attr.target_fd = target_fd;
attr.attach_bpf_fd = prog_fd;
attr.attach_type = type;
+ attr.attach_flags = flags;
return sys_bpf(BPF_PROG_ATTACH, &attr, sizeof(attr));
}
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index a2f9853dd882..4ac6c4b84100 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -41,7 +41,8 @@ int bpf_map_delete_elem(int fd, void *key);
int bpf_map_get_next_key(int fd, void *key, void *next_key);
int bpf_obj_pin(int fd, const char *pathname);
int bpf_obj_get(const char *pathname);
-int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type);
+int bpf_prog_attach(int prog_fd, int attachable_fd, enum bpf_attach_type type,
+ unsigned int flags);
int bpf_prog_detach(int attachable_fd, enum bpf_attach_type type);