diff options
| author |   Xie He <xie.he.0141@gmail.com> | 2020-10-31 11:10:39 -0700 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2020-11-03 15:19:09 -0800 |
| commit | 583d5333ed7dcdc0c7a3f8ec8b818b7ae4a59e8e (patch) | |
| tree | 3d1e75e2f95661afdf1a59ae466ffb4c66b0621a /drivers/net/wan | |
| parent | ibmvnic: merge do_change_param_reset into do_reset (diff) | |
| download | linux-dev-583d5333ed7dcdc0c7a3f8ec8b818b7ae4a59e8e.tar.xz linux-dev-583d5333ed7dcdc0c7a3f8ec8b818b7ae4a59e8e.zip | |
net: hdlc_fr: Simpify fr_rx by using "goto rx_drop" to drop frames
When the fr_rx function drops a received frame (because the protocol type
is not supported, or because the PVC virtual device that corresponds to
the DLCI number and the protocol type doesn't exist), the function frees
the skb and returns.
The code for freeing the skb and returning is repeated several times, this
patch uses "goto rx_drop" to replace them so that the code looks cleaner.
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/wan')
| -rw-r--r-- | drivers/net/wan/hdlc_fr.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/net/wan/hdlc_fr.c b/drivers/net/wan/hdlc_fr.c index 409e5a7ad8e2..4db0e01b96a9 100644 --- a/drivers/net/wan/hdlc_fr.c +++ b/drivers/net/wan/hdlc_fr.c @@ -904,8 +904,7 @@ static int fr_rx(struct sk_buff *skb) netdev_info(frad, "No PVC for received frame's DLCI %d\n", dlci); #endif - dev_kfree_skb_any(skb); - return NET_RX_DROP; + goto rx_drop; } if (pvc->state.fecn != fh->fecn) { @@ -963,14 +962,12 @@ static int fr_rx(struct sk_buff *skb) default: netdev_info(frad, "Unsupported protocol, OUI=%x PID=%x\n", oui, pid); - dev_kfree_skb_any(skb); - return NET_RX_DROP; + goto rx_drop; } } else { netdev_info(frad, "Unsupported protocol, NLPID=%x length=%i\n", data[3], skb->len); - dev_kfree_skb_any(skb); - return NET_RX_DROP; + goto rx_drop; } if (dev) { @@ -982,12 +979,12 @@ static int fr_rx(struct sk_buff *skb) netif_rx(skb); return NET_RX_SUCCESS; } else { - dev_kfree_skb_any(skb); - return NET_RX_DROP; + goto rx_drop; } - rx_error: +rx_error: frad->stats.rx_errors++; /* Mark error */ +rx_drop: dev_kfree_skb_any(skb); return NET_RX_DROP; } |