diff options
Diffstat (limited to 'drivers/net/qlcnic/qlcnic_init.c')
| -rw-r--r-- | drivers/net/qlcnic/qlcnic_init.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/net/qlcnic/qlcnic_init.c b/drivers/net/qlcnic/qlcnic_init.c index a174521daa6..df91b754bb7 100644 --- a/drivers/net/qlcnic/qlcnic_init.c +++ b/drivers/net/qlcnic/qlcnic_init.c @@ -25,6 +25,7 @@ #include <linux/netdevice.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/if_vlan.h> #include "qlcnic.h" struct crb_addr_pair { @@ -1302,6 +1303,27 @@ static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter, return skb; } +static int +qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, struct sk_buff *skb) +{ + u16 vlan_tag; + struct ethhdr *eth_hdr; + + if (!__vlan_get_tag(skb, &vlan_tag)) { + if (vlan_tag == adapter->pvid) { + /* strip the tag from the packet and send it up */ + eth_hdr = (struct ethhdr *) skb->data; + memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2); + skb_pull(skb, VLAN_HLEN); + return 0; + } + } + if (adapter->flags & QLCNIC_TAGGING_ENABLED) + return 0; + + return -EIO; +} + static struct qlcnic_rx_buffer * qlcnic_process_rcv(struct qlcnic_adapter *adapter, struct qlcnic_host_sds_ring *sds_ring, @@ -1342,6 +1364,15 @@ qlcnic_process_rcv(struct qlcnic_adapter *adapter, skb_pull(skb, pkt_offset); skb->truesize = skb->len + sizeof(struct sk_buff); + + if (unlikely(adapter->pvid)) { + if (qlcnic_check_rx_tagging(adapter, skb)) { + adapter->stats.rxdropped++; + dev_kfree_skb_any(skb); + return buffer; + } + } + skb->protocol = eth_type_trans(skb, netdev); napi_gro_receive(&sds_ring->napi, skb); @@ -1406,6 +1437,14 @@ qlcnic_process_lro(struct qlcnic_adapter *adapter, skb->truesize = skb->len + sizeof(struct sk_buff) + skb_headroom(skb); skb_pull(skb, l2_hdr_offset); + + if (unlikely(adapter->pvid)) { + if (qlcnic_check_rx_tagging(adapter, skb)) { + adapter->stats.rxdropped++; + dev_kfree_skb_any(skb); + return buffer; + } + } skb->protocol = eth_type_trans(skb, netdev); iph = (struct iphdr *)skb->data; |