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Message-Id: <1304187809-7887-1-git-send-email-sasikanth.v19@gmail.com>
Date: Sat, 30 Apr 2011 23:53:29 +0530
From: Sasikanth V <sasikanth.v19@...il.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Sasikanth V <sasikanth.v19@...il.com>
Subject: [PATCH] Removed unnecessary assignments , gotos and goto labels
Signed-off-by: Sasikanth V <sasikanth.v19@...il.com>
---
net/packet/af_packet.c | 71 +++++++++++++++++++++---------------------------
1 files changed, 31 insertions(+), 40 deletions(-)
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index b5362e9..5f03ba5 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -182,10 +182,6 @@ struct packet_ring_buffer {
atomic_t pending;
};
-struct packet_sock;
-static int tpacket_snd(struct packet_sock *po, struct msghdr *msg);
-
-static void packet_flush_mclist(struct sock *sk);
struct packet_sock {
/* struct sock has to be the first member of packet_sock */
@@ -220,6 +216,9 @@ struct packet_skb_cb {
} sa;
};
+static int tpacket_snd(struct packet_sock *po, struct msghdr *msg);
+static void packet_flush_mclist(struct sock *sk);
+
#define PACKET_SKB_CB(__skb) ((struct packet_skb_cb *)((__skb)->cb))
static inline __pure struct page *pgv_to_page(void *addr)
@@ -1459,16 +1458,14 @@ static int packet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len
return -EINVAL;
if (sll->sll_ifindex) {
- err = -ENODEV;
dev = dev_get_by_index(sock_net(sk), sll->sll_ifindex);
- if (dev == NULL)
- goto out;
+ if (!dev)
+ return -ENODEV;
}
err = packet_do_bind(sk, dev, sll->sll_protocol ? : pkt_sk(sk)->num);
if (dev)
dev_put(dev);
-out:
return err;
}
@@ -1498,10 +1495,9 @@ static int packet_create(struct net *net, struct socket *sock, int protocol,
sock->state = SS_UNCONNECTED;
- err = -ENOBUFS;
sk = sk_alloc(net, PF_PACKET, GFP_KERNEL, &packet_proto);
- if (sk == NULL)
- goto out;
+ if (!sk)
+ return -ENOBUFS;
sock->ops = &packet_ops;
if (sock->type == SOCK_PACKET)
@@ -1542,8 +1538,6 @@ static int packet_create(struct net *net, struct socket *sock, int protocol,
spin_unlock_bh(&net->packet.sklist_lock);
return 0;
-out:
- return err;
}
static int packet_recv_error(struct sock *sk, struct msghdr *msg, int len)
@@ -1552,10 +1546,9 @@ static int packet_recv_error(struct sock *sk, struct msghdr *msg, int len)
struct sk_buff *skb, *skb2;
int copied, err;
- err = -EAGAIN;
skb = skb_dequeue(&sk->sk_error_queue);
- if (skb == NULL)
- goto out;
+ if (!skb)
+ return -EAGAIN;
copied = skb->len;
if (copied > len) {
@@ -1563,31 +1556,29 @@ static int packet_recv_error(struct sock *sk, struct msghdr *msg, int len)
copied = len;
}
err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
- if (err)
- goto out_free_skb;
+ if (!err) {
- sock_recv_timestamp(msg, sk, skb);
+ sock_recv_timestamp(msg, sk, skb);
- serr = SKB_EXT_ERR(skb);
- put_cmsg(msg, SOL_PACKET, PACKET_TX_TIMESTAMP,
- sizeof(serr->ee), &serr->ee);
+ serr = SKB_EXT_ERR(skb);
+ put_cmsg(msg, SOL_PACKET, PACKET_TX_TIMESTAMP,
+ sizeof(serr->ee), &serr->ee);
- msg->msg_flags |= MSG_ERRQUEUE;
- err = copied;
+ msg->msg_flags |= MSG_ERRQUEUE;
+ err = copied;
- /* Reset and regenerate socket error */
- spin_lock_bh(&sk->sk_error_queue.lock);
- sk->sk_err = 0;
- if ((skb2 = skb_peek(&sk->sk_error_queue)) != NULL) {
- sk->sk_err = SKB_EXT_ERR(skb2)->ee.ee_errno;
- spin_unlock_bh(&sk->sk_error_queue.lock);
- sk->sk_error_report(sk);
- } else
- spin_unlock_bh(&sk->sk_error_queue.lock);
+ /* Reset and regenerate socket error */
+ spin_lock_bh(&sk->sk_error_queue.lock);
+ sk->sk_err = 0;
+ if ((skb2 = skb_peek(&sk->sk_error_queue)) != NULL) {
+ sk->sk_err = SKB_EXT_ERR(skb2)->ee.ee_errno;
+ spin_unlock_bh(&sk->sk_error_queue.lock);
+ sk->sk_error_report(sk);
+ } else
+ spin_unlock_bh(&sk->sk_error_queue.lock);
+ }
-out_free_skb:
kfree_skb(skb);
-out:
return err;
}
@@ -1755,9 +1746,9 @@ static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr,
rcu_read_lock();
dev = dev_get_by_index_rcu(sock_net(sk), pkt_sk(sk)->ifindex);
if (dev)
- strncpy(uaddr->sa_data, dev->name, 14);
+ strncpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data));
else
- memset(uaddr->sa_data, 0, 14);
+ memset(uaddr->sa_data, 0, sizeof(uaddr->sa_data));
rcu_read_unlock();
*uaddr_len = sizeof(*uaddr);
@@ -1779,15 +1770,15 @@ static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
sll->sll_ifindex = po->ifindex;
sll->sll_protocol = po->num;
sll->sll_pkttype = 0;
+ sll->sll_hatype = 0;
+ sll->sll_halen = 0;
+
rcu_read_lock();
dev = dev_get_by_index_rcu(sock_net(sk), po->ifindex);
if (dev) {
sll->sll_hatype = dev->type;
sll->sll_halen = dev->addr_len;
memcpy(sll->sll_addr, dev->dev_addr, dev->addr_len);
- } else {
- sll->sll_hatype = 0; /* Bad: we have no ARPHRD_UNSPEC */
- sll->sll_halen = 0;
}
rcu_read_unlock();
*uaddr_len = offsetof(struct sockaddr_ll, sll_addr) + sll->sll_halen;
--
1.7.3.4
--
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