diff options
| author | Amerigo Wang <amwang@redhat.com> | 2012-08-10 01:24:49 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-08-14 14:33:32 -0700 |
| commit | 689971b44613883ee74ae9c1b31a864aaa3a8e17 (patch) | |
| tree | 1c0544b1a44a4ba5f05461c697b565f67121b344 /net/core | |
| parent | 6eacf8ad8d01c49b95b994b0bf379db2b5b29460 (diff) | |
| download | linux-689971b44613883ee74ae9c1b31a864aaa3a8e17.tar.gz linux-689971b44613883ee74ae9c1b31a864aaa3a8e17.tar.bz2 linux-689971b44613883ee74ae9c1b31a864aaa3a8e17.zip | |
netpoll: handle vlan tags in netpoll tx and rx path
Without this patch, I can't get netconsole logs remotely over
vlan. The reason is probably we don't handle vlan tags in either
netpoll tx or rx path.
I am not sure if I use these vlan functions correctly, at
least this patch works.
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/netpoll.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/net/core/netpoll.c b/net/core/netpoll.c index 174346ac15a0..e4ba3e70c174 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -26,6 +26,7 @@ #include <linux/workqueue.h> #include <linux/slab.h> #include <linux/export.h> +#include <linux/if_vlan.h> #include <net/tcp.h> #include <net/udp.h> #include <asm/unaligned.h> @@ -334,6 +335,14 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb, tries > 0; --tries) { if (__netif_tx_trylock(txq)) { if (!netif_xmit_stopped(txq)) { + if (vlan_tx_tag_present(skb) && + !(netif_skb_features(skb) & NETIF_F_HW_VLAN_TX)) { + skb = __vlan_put_tag(skb, vlan_tx_tag_get(skb)); + if (unlikely(!skb)) + break; + skb->vlan_tci = 0; + } + status = ops->ndo_start_xmit(skb, dev); if (status == NETDEV_TX_OK) txq_trans_update(txq); @@ -567,6 +576,12 @@ int __netpoll_rx(struct sk_buff *skb, struct netpoll_info *npinfo) return 1; } + if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) { + skb = vlan_untag(skb); + if (unlikely(!skb)) + goto out; + } + proto = ntohs(eth_hdr(skb)->h_proto); if (proto != ETH_P_IP) goto out; |