diff options
| -rw-r--r-- | include/uapi/linux/netlink_diag.h | 10 | ||||
| -rw-r--r-- | net/netlink/af_netlink.c | 8 | ||||
| -rw-r--r-- | net/netlink/af_netlink.h | 8 | ||||
| -rw-r--r-- | net/netlink/diag.c | 25 |
4 files changed, 43 insertions, 8 deletions
diff --git a/include/uapi/linux/netlink_diag.h b/include/uapi/linux/netlink_diag.h index 76b4d87c83a8..6dcd4de3397b 100644 --- a/include/uapi/linux/netlink_diag.h +++ b/include/uapi/linux/netlink_diag.h @@ -38,6 +38,7 @@ enum { NETLINK_DIAG_GROUPS, NETLINK_DIAG_RX_RING, NETLINK_DIAG_TX_RING, + NETLINK_DIAG_FLAGS, __NETLINK_DIAG_MAX, }; @@ -52,5 +53,14 @@ enum { /* deprecated since 4.6 */ #define NDIAG_SHOW_RING_CFG 0x00000004 /* show ring configuration */ #endif +#define NDIAG_SHOW_FLAGS 0x00000008 /* show flags of a netlink socket */ + +/* flags */ +#define NDIAG_FLAG_CB_RUNNING 0x00000001 +#define NDIAG_FLAG_PKTINFO 0x00000002 +#define NDIAG_FLAG_BROADCAST_ERROR 0x00000004 +#define NDIAG_FLAG_NO_ENOBUFS 0x00000008 +#define NDIAG_FLAG_LISTEN_ALL_NSID 0x00000010 +#define NDIAG_FLAG_CAP_ACK 0x00000020 #endif diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 596eaff66649..fc232441cf23 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -78,14 +78,6 @@ struct listeners { /* state bits */ #define NETLINK_S_CONGESTED 0x0 -/* flags */ -#define NETLINK_F_KERNEL_SOCKET 0x1 -#define NETLINK_F_RECV_PKTINFO 0x2 -#define NETLINK_F_BROADCAST_SEND_ERROR 0x4 -#define NETLINK_F_RECV_NO_ENOBUFS 0x8 -#define NETLINK_F_LISTEN_ALL_NSID 0x10 -#define NETLINK_F_CAP_ACK 0x20 - static inline int netlink_is_kernel(struct sock *sk) { return nlk_sk(sk)->flags & NETLINK_F_KERNEL_SOCKET; diff --git a/net/netlink/af_netlink.h b/net/netlink/af_netlink.h index 4fdb38318977..f792f8d7f982 100644 --- a/net/netlink/af_netlink.h +++ b/net/netlink/af_netlink.h @@ -6,6 +6,14 @@ #include <linux/workqueue.h> #include <net/sock.h> +/* flags */ +#define NETLINK_F_KERNEL_SOCKET 0x1 +#define NETLINK_F_RECV_PKTINFO 0x2 +#define NETLINK_F_BROADCAST_SEND_ERROR 0x4 +#define NETLINK_F_RECV_NO_ENOBUFS 0x8 +#define NETLINK_F_LISTEN_ALL_NSID 0x10 +#define NETLINK_F_CAP_ACK 0x20 + #define NLGRPSZ(x) (ALIGN(x, sizeof(unsigned long) * 8) / 8) #define NLGRPLONGS(x) (NLGRPSZ(x)/sizeof(unsigned long)) diff --git a/net/netlink/diag.c b/net/netlink/diag.c index a5546249fb10..8faa20b4d457 100644 --- a/net/netlink/diag.c +++ b/net/netlink/diag.c @@ -19,6 +19,27 @@ static int sk_diag_dump_groups(struct sock *sk, struct sk_buff *nlskb) nlk->groups); } +static int sk_diag_put_flags(struct sock *sk, struct sk_buff *skb) +{ + struct netlink_sock *nlk = nlk_sk(sk); + u32 flags = 0; + + if (nlk->cb_running) + flags |= NDIAG_FLAG_CB_RUNNING; + if (nlk->flags & NETLINK_F_RECV_PKTINFO) + flags |= NDIAG_FLAG_PKTINFO; + if (nlk->flags & NETLINK_F_BROADCAST_SEND_ERROR) + flags |= NDIAG_FLAG_BROADCAST_ERROR; + if (nlk->flags & NETLINK_F_RECV_NO_ENOBUFS) + flags |= NDIAG_FLAG_NO_ENOBUFS; + if (nlk->flags & NETLINK_F_LISTEN_ALL_NSID) + flags |= NDIAG_FLAG_LISTEN_ALL_NSID; + if (nlk->flags & NETLINK_F_CAP_ACK) + flags |= NDIAG_FLAG_CAP_ACK; + + return nla_put_u32(skb, NETLINK_DIAG_FLAGS, flags); +} + static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct netlink_diag_req *req, u32 portid, u32 seq, u32 flags, int sk_ino) @@ -52,6 +73,10 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, sock_diag_put_meminfo(sk, skb, NETLINK_DIAG_MEMINFO)) goto out_nlmsg_trim; + if ((req->ndiag_show & NDIAG_SHOW_FLAGS) && + sk_diag_put_flags(sk, skb)) + goto out_nlmsg_trim; + nlmsg_end(skb, nlh); return 0; |
