From: Nicolas Dichtel Date: Thu, 7 May 2015 09:02:52 +0000 (+0200) Subject: netlink: rename private flags and states X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cc3a572fe6cf586f478546215bc5d3694357d71e;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git netlink: rename private flags and states These flags and states have the same prefix (NETLINK_) that netlink socket options. To avoid confusion and to be able to name a flag like a socket option, let's use an other prefix: NETLINK_[S|F]_. Note: a comment has been fixed, it was talking about NETLINK_RECV_NO_ENOBUFS socket option instead of NETLINK_NO_ENOBUFS. Signed-off-by: Nicolas Dichtel Acked-by: Thomas Graf Signed-off-by: David S. Miller --- diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index ec4adbdcb9b4..bf7f56d7a9aa 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -76,17 +76,17 @@ struct listeners { }; /* state bits */ -#define NETLINK_CONGESTED 0x0 +#define NETLINK_S_CONGESTED 0x0 /* flags */ -#define NETLINK_KERNEL_SOCKET 0x1 -#define NETLINK_RECV_PKTINFO 0x2 -#define NETLINK_BROADCAST_SEND_ERROR 0x4 -#define NETLINK_RECV_NO_ENOBUFS 0x8 +#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 static inline int netlink_is_kernel(struct sock *sk) { - return nlk_sk(sk)->flags & NETLINK_KERNEL_SOCKET; + return nlk_sk(sk)->flags & NETLINK_F_KERNEL_SOCKET; } struct netlink_table *nl_table; @@ -256,8 +256,9 @@ static void netlink_overrun(struct sock *sk) { struct netlink_sock *nlk = nlk_sk(sk); - if (!(nlk->flags & NETLINK_RECV_NO_ENOBUFS)) { - if (!test_and_set_bit(NETLINK_CONGESTED, &nlk_sk(sk)->state)) { + if (!(nlk->flags & NETLINK_F_RECV_NO_ENOBUFS)) { + if (!test_and_set_bit(NETLINK_S_CONGESTED, + &nlk_sk(sk)->state)) { sk->sk_err = ENOBUFS; sk->sk_error_report(sk); } @@ -270,8 +271,8 @@ static void netlink_rcv_wake(struct sock *sk) struct netlink_sock *nlk = nlk_sk(sk); if (skb_queue_empty(&sk->sk_receive_queue)) - clear_bit(NETLINK_CONGESTED, &nlk->state); - if (!test_bit(NETLINK_CONGESTED, &nlk->state)) + clear_bit(NETLINK_S_CONGESTED, &nlk->state); + if (!test_bit(NETLINK_S_CONGESTED, &nlk->state)) wake_up_interruptible(&nlk->wait); } @@ -1656,7 +1657,7 @@ int netlink_attachskb(struct sock *sk, struct sk_buff *skb, nlk = nlk_sk(sk); if ((atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf || - test_bit(NETLINK_CONGESTED, &nlk->state)) && + test_bit(NETLINK_S_CONGESTED, &nlk->state)) && !netlink_skb_is_mmaped(skb)) { DECLARE_WAITQUEUE(wait, current); if (!*timeo) { @@ -1671,7 +1672,7 @@ int netlink_attachskb(struct sock *sk, struct sk_buff *skb, add_wait_queue(&nlk->wait, &wait); if ((atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf || - test_bit(NETLINK_CONGESTED, &nlk->state)) && + test_bit(NETLINK_S_CONGESTED, &nlk->state)) && !sock_flag(sk, SOCK_DEAD)) *timeo = schedule_timeout(*timeo); @@ -1895,7 +1896,7 @@ static int netlink_broadcast_deliver(struct sock *sk, struct sk_buff *skb) struct netlink_sock *nlk = nlk_sk(sk); if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf && - !test_bit(NETLINK_CONGESTED, &nlk->state)) { + !test_bit(NETLINK_S_CONGESTED, &nlk->state)) { netlink_skb_set_owner_r(skb, sk); __netlink_sendskb(sk, skb); return atomic_read(&sk->sk_rmem_alloc) > (sk->sk_rcvbuf >> 1); @@ -1956,7 +1957,7 @@ static void do_one_broadcast(struct sock *sk, netlink_overrun(sk); /* Clone failed. Notify ALL listeners. */ p->failure = 1; - if (nlk->flags & NETLINK_BROADCAST_SEND_ERROR) + if (nlk->flags & NETLINK_F_BROADCAST_SEND_ERROR) p->delivery_failure = 1; } else if (p->tx_filter && p->tx_filter(sk, p->skb2, p->tx_data)) { kfree_skb(p->skb2); @@ -1966,7 +1967,7 @@ static void do_one_broadcast(struct sock *sk, p->skb2 = NULL; } else if ((val = netlink_broadcast_deliver(sk, p->skb2)) < 0) { netlink_overrun(sk); - if (nlk->flags & NETLINK_BROADCAST_SEND_ERROR) + if (nlk->flags & NETLINK_F_BROADCAST_SEND_ERROR) p->delivery_failure = 1; } else { p->congested |= val; @@ -2057,7 +2058,7 @@ static int do_one_set_err(struct sock *sk, struct netlink_set_err_data *p) !test_bit(p->group - 1, nlk->groups)) goto out; - if (p->code == ENOBUFS && nlk->flags & NETLINK_RECV_NO_ENOBUFS) { + if (p->code == ENOBUFS && nlk->flags & NETLINK_F_RECV_NO_ENOBUFS) { ret = 1; goto out; } @@ -2076,7 +2077,7 @@ out: * @code: error code, must be negative (as usual in kernelspace) * * This function returns the number of broadcast listeners that have set the - * NETLINK_RECV_NO_ENOBUFS socket option. + * NETLINK_NO_ENOBUFS socket option. */ int netlink_set_err(struct sock *ssk, u32 portid, u32 group, int code) { @@ -2136,9 +2137,9 @@ static int netlink_setsockopt(struct socket *sock, int level, int optname, switch (optname) { case NETLINK_PKTINFO: if (val) - nlk->flags |= NETLINK_RECV_PKTINFO; + nlk->flags |= NETLINK_F_RECV_PKTINFO; else - nlk->flags &= ~NETLINK_RECV_PKTINFO; + nlk->flags &= ~NETLINK_F_RECV_PKTINFO; err = 0; break; case NETLINK_ADD_MEMBERSHIP: @@ -2167,18 +2168,18 @@ static int netlink_setsockopt(struct socket *sock, int level, int optname, } case NETLINK_BROADCAST_ERROR: if (val) - nlk->flags |= NETLINK_BROADCAST_SEND_ERROR; + nlk->flags |= NETLINK_F_BROADCAST_SEND_ERROR; else - nlk->flags &= ~NETLINK_BROADCAST_SEND_ERROR; + nlk->flags &= ~NETLINK_F_BROADCAST_SEND_ERROR; err = 0; break; case NETLINK_NO_ENOBUFS: if (val) { - nlk->flags |= NETLINK_RECV_NO_ENOBUFS; - clear_bit(NETLINK_CONGESTED, &nlk->state); + nlk->flags |= NETLINK_F_RECV_NO_ENOBUFS; + clear_bit(NETLINK_S_CONGESTED, &nlk->state); wake_up_interruptible(&nlk->wait); } else { - nlk->flags &= ~NETLINK_RECV_NO_ENOBUFS; + nlk->flags &= ~NETLINK_F_RECV_NO_ENOBUFS; } err = 0; break; @@ -2227,7 +2228,7 @@ static int netlink_getsockopt(struct socket *sock, int level, int optname, if (len < sizeof(int)) return -EINVAL; len = sizeof(int); - val = nlk->flags & NETLINK_RECV_PKTINFO ? 1 : 0; + val = nlk->flags & NETLINK_F_RECV_PKTINFO ? 1 : 0; if (put_user(len, optlen) || put_user(val, optval)) return -EFAULT; @@ -2237,7 +2238,7 @@ static int netlink_getsockopt(struct socket *sock, int level, int optname, if (len < sizeof(int)) return -EINVAL; len = sizeof(int); - val = nlk->flags & NETLINK_BROADCAST_SEND_ERROR ? 1 : 0; + val = nlk->flags & NETLINK_F_BROADCAST_SEND_ERROR ? 1 : 0; if (put_user(len, optlen) || put_user(val, optval)) return -EFAULT; @@ -2247,7 +2248,7 @@ static int netlink_getsockopt(struct socket *sock, int level, int optname, if (len < sizeof(int)) return -EINVAL; len = sizeof(int); - val = nlk->flags & NETLINK_RECV_NO_ENOBUFS ? 1 : 0; + val = nlk->flags & NETLINK_F_RECV_NO_ENOBUFS ? 1 : 0; if (put_user(len, optlen) || put_user(val, optval)) return -EFAULT; @@ -2418,7 +2419,7 @@ static int netlink_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, msg->msg_namelen = sizeof(*addr); } - if (nlk->flags & NETLINK_RECV_PKTINFO) + if (nlk->flags & NETLINK_F_RECV_PKTINFO) netlink_cmsg_recv_pktinfo(msg, skb); memset(&scm, 0, sizeof(scm)); @@ -2502,7 +2503,7 @@ __netlink_kernel_create(struct net *net, int unit, struct module *module, goto out_sock_release; nlk = nlk_sk(sk); - nlk->flags |= NETLINK_KERNEL_SOCKET; + nlk->flags |= NETLINK_F_KERNEL_SOCKET; netlink_table_grab(); if (!nl_table[unit].registered) {