diff options
| -rwxr-xr-x[-rw-r--r--] | drivers/net/chelsio/cxgb2.c | 3 | ||||
| -rwxr-xr-x[-rw-r--r--] | drivers/net/chelsio/sge.c | 34 | ||||
| -rwxr-xr-x[-rw-r--r--] | drivers/net/chelsio/sge.h | 1 |
3 files changed, 18 insertions, 20 deletions
diff --git a/drivers/net/chelsio/cxgb2.c b/drivers/net/chelsio/cxgb2.c index 2dbf8dc..2461f91 100644..100755 --- a/drivers/net/chelsio/cxgb2.c +++ b/drivers/net/chelsio/cxgb2.c @@ -401,7 +401,8 @@ static char stats_strings[][ETH_GSTRING_LEN] = { "TxTso", "RxVlan", "TxVlan", - + "TxNeedHeadroom", + /* Interrupt stats */ "rx drops", "pure_rsps", diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c index 4436662..e8b1036 100644..100755 --- a/drivers/net/chelsio/sge.c +++ b/drivers/net/chelsio/sge.c @@ -991,6 +991,7 @@ void t1_sge_get_port_stats(const struct sge *sge, int port, ss->tx_packets += st->tx_packets; ss->tx_cso += st->tx_cso; ss->tx_tso += st->tx_tso; + ss->tx_need_hdrroom += st->tx_need_hdrroom; ss->vlan_xtract += st->vlan_xtract; ss->vlan_insert += st->vlan_insert; } @@ -1848,7 +1849,8 @@ int t1_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct adapter *adapter = dev->priv; struct sge *sge = adapter->sge; - struct sge_port_stats *st = per_cpu_ptr(sge->port_stats[dev->if_port], smp_processor_id()); + struct sge_port_stats *st = per_cpu_ptr(sge->port_stats[dev->if_port], + smp_processor_id()); struct cpl_tx_pkt *cpl; struct sk_buff *orig_skb = skb; int ret; @@ -1856,6 +1858,18 @@ int t1_start_xmit(struct sk_buff *skb, struct net_device *dev) if (skb->protocol == htons(ETH_P_CPL5)) goto send; + /* + * We are using a non-standard hard_header_len. + * Allocate more header room in the rare cases it is not big enough. + */ + if (unlikely(skb_headroom(skb) < dev->hard_header_len - ETH_HLEN)) { + skb = skb_realloc_headroom(skb, sizeof(struct cpl_tx_pkt_lso)); + ++st->tx_need_hdrroom; + dev_kfree_skb_any(orig_skb); + if (!skb) + return NETDEV_TX_OK; + } + if (skb_shinfo(skb)->gso_size) { int eth_type; struct cpl_tx_pkt_lso *hdr; @@ -1889,24 +1903,6 @@ int t1_start_xmit(struct sk_buff *skb, struct net_device *dev) return NETDEV_TX_OK; } - /* - * We are using a non-standard hard_header_len and some kernel - * components, such as pktgen, do not handle it right. - * Complain when this happens but try to fix things up. - */ - if (unlikely(skb_headroom(skb) < dev->hard_header_len - ETH_HLEN)) { - pr_debug("%s: headroom %d header_len %d\n", dev->name, - skb_headroom(skb), dev->hard_header_len); - - if (net_ratelimit()) - printk(KERN_ERR "%s: inadequate headroom in " - "Tx packet\n", dev->name); - skb = skb_realloc_headroom(skb, sizeof(*cpl)); - dev_kfree_skb_any(orig_skb); - if (!skb) - return NETDEV_TX_OK; - } - if (!(adapter->flags & UDP_CSUM_CAPABLE) && skb->ip_summed == CHECKSUM_PARTIAL && ip_hdr(skb)->protocol == IPPROTO_UDP) { diff --git a/drivers/net/chelsio/sge.h b/drivers/net/chelsio/sge.h index 713d9c5..285bbb2 100644..100755 --- a/drivers/net/chelsio/sge.h +++ b/drivers/net/chelsio/sge.h @@ -64,6 +64,7 @@ struct sge_port_stats { u64 tx_tso; /* # of TSO requests */ u64 vlan_xtract; /* # of VLAN tag extractions */ u64 vlan_insert; /* # of VLAN tag insertions */ + u64 tx_need_hdrroom; /* # of TX skbs in need of more header room */ }; struct sk_buff; |