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path: root/drivers/net/ethernet/emulex/benet/be_main.c
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Diffstat (limited to 'drivers/net/ethernet/emulex/benet/be_main.c')
-rw-r--r--drivers/net/ethernet/emulex/benet/be_main.c39
1 files changed, 26 insertions, 13 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index a9da6f94e2fd..36c80612e21a 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -913,24 +913,14 @@ static int be_ipv6_tx_stall_chk(struct be_adapter *adapter,
913 return BE3_chip(adapter) && be_ipv6_exthdr_check(skb); 913 return BE3_chip(adapter) && be_ipv6_exthdr_check(skb);
914} 914}
915 915
916static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter, 916static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter,
917 struct sk_buff *skb, 917 struct sk_buff *skb,
918 bool *skip_hw_vlan) 918 bool *skip_hw_vlan)
919{ 919{
920 struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data; 920 struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
921 unsigned int eth_hdr_len; 921 unsigned int eth_hdr_len;
922 struct iphdr *ip; 922 struct iphdr *ip;
923 923
924 /* Lancer, SH-R ASICs have a bug wherein Packets that are 32 bytes or less
925 * may cause a transmit stall on that port. So the work-around is to
926 * pad short packets (<= 32 bytes) to a 36-byte length.
927 */
928 if (unlikely(!BEx_chip(adapter) && skb->len <= 32)) {
929 if (skb_padto(skb, 36))
930 goto err;
931 skb->len = 36;
932 }
933
934 /* For padded packets, BE HW modifies tot_len field in IP header 924 /* For padded packets, BE HW modifies tot_len field in IP header
935 * incorrecly when VLAN tag is inserted by HW. 925 * incorrecly when VLAN tag is inserted by HW.
936 * For padded packets, Lancer computes incorrect checksum. 926 * For padded packets, Lancer computes incorrect checksum.
@@ -991,6 +981,29 @@ err:
991 return NULL; 981 return NULL;
992} 982}
993 983
984static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter,
985 struct sk_buff *skb,
986 bool *skip_hw_vlan)
987{
988 /* Lancer, SH-R ASICs have a bug wherein Packets that are 32 bytes or
989 * less may cause a transmit stall on that port. So the work-around is
990 * to pad short packets (<= 32 bytes) to a 36-byte length.
991 */
992 if (unlikely(!BEx_chip(adapter) && skb->len <= 32)) {
993 if (skb_padto(skb, 36))
994 return NULL;
995 skb->len = 36;
996 }
997
998 if (BEx_chip(adapter) || lancer_chip(adapter)) {
999 skb = be_lancer_xmit_workarounds(adapter, skb, skip_hw_vlan);
1000 if (!skb)
1001 return NULL;
1002 }
1003
1004 return skb;
1005}
1006
994static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev) 1007static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev)
995{ 1008{
996 struct be_adapter *adapter = netdev_priv(netdev); 1009 struct be_adapter *adapter = netdev_priv(netdev);