diff options
| -rw-r--r-- | drivers/net/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/net/pasemi_mac.c | 53 | ||||
| -rw-r--r-- | drivers/net/pasemi_mac.h | 5 |
3 files changed, 55 insertions, 4 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index b034410..477c3e4 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -2572,6 +2572,7 @@ config PASEMI_MAC tristate "PA Semi 1/10Gbit MAC" depends on PPC64 && PCI select PHYLIB + select INET_LRO help This driver supports the on-chip 1/10Gbit Ethernet controller on PA Semi's PWRficient line of chips. diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c index e78aac4..98b6397 100644 --- a/drivers/net/pasemi_mac.c +++ b/drivers/net/pasemi_mac.c @@ -32,6 +32,7 @@ #include <linux/ip.h> #include <linux/tcp.h> #include <net/checksum.h> +#include <linux/inet_lro.h> #include <asm/irq.h> #include <asm/firmware.h> @@ -56,9 +57,11 @@ /* Must be a power of two */ -#define RX_RING_SIZE 1024 +#define RX_RING_SIZE 2048 #define TX_RING_SIZE 4096 +#define LRO_MAX_AGGR 64 + #define DEFAULT_MSG_ENABLE \ (NETIF_MSG_DRV | \ NETIF_MSG_PROBE | \ @@ -206,7 +209,6 @@ static int pasemi_get_mac_addr(struct pasemi_mac *mac) return -ENOENT; } - if (sscanf(maddr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &addr[0], &addr[1], &addr[2], &addr[3], &addr[4], &addr[5]) != 6) { dev_warn(&pdev->dev, @@ -219,6 +221,37 @@ static int pasemi_get_mac_addr(struct pasemi_mac *mac) return 0; } +static int get_skb_hdr(struct sk_buff *skb, void **iphdr, + void **tcph, u64 *hdr_flags, void *data) +{ + u64 macrx = (u64) data; + unsigned int ip_len; + struct iphdr *iph; + + /* IPv4 header checksum failed */ + if ((macrx & XCT_MACRX_HTY_M) != XCT_MACRX_HTY_IPV4_OK) + return -1; + + /* non tcp packet */ + skb_reset_network_header(skb); + iph = ip_hdr(skb); + if (iph->protocol != IPPROTO_TCP) + return -1; + + ip_len = ip_hdrlen(skb); + skb_set_transport_header(skb, ip_len); + *tcph = tcp_hdr(skb); + + /* check if ip header and tcp header are complete */ + if (iph->tot_len < ip_len + tcp_hdrlen(skb)) + return -1; + + *hdr_flags = LRO_IPV4 | LRO_TCP; + *iphdr = iph; + + return 0; +} + static int pasemi_mac_unmap_tx_skb(struct pasemi_mac *mac, struct sk_buff *skb, const dma_addr_t *dmas) @@ -662,7 +695,7 @@ static int pasemi_mac_clean_rx(struct pasemi_mac_rxring *rx, skb_put(skb, len-4); skb->protocol = eth_type_trans(skb, mac->netdev); - netif_receive_skb(skb); + lro_receive_skb(&mac->lro_mgr, skb, (void *)macrx); next: RX_DESC(rx, n) = 0; @@ -684,6 +717,8 @@ next: rx_ring(mac)->next_to_clean = n; + lro_flush_all(&mac->lro_mgr); + /* Increase is in number of 16-byte entries, and since each descriptor * with an 8BRES takes up 3x8 bytes (padded to 4x8), increase with * count*2. @@ -988,7 +1023,7 @@ static int pasemi_mac_open(struct net_device *dev) PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(0x3ff)); write_iob_reg(PAS_IOB_DMA_RXCH_CFG(mac->rx->chan.chno), - PAS_IOB_DMA_RXCH_CFG_CNTTH(128)); + PAS_IOB_DMA_RXCH_CFG_CNTTH(256)); write_iob_reg(PAS_IOB_DMA_TXCH_CFG(mac->tx->chan.chno), PAS_IOB_DMA_TXCH_CFG_CNTTH(32)); @@ -1368,6 +1403,16 @@ pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent) dev->features = NETIF_F_IP_CSUM | NETIF_F_LLTX | NETIF_F_SG | NETIF_F_HIGHDMA; + mac->lro_mgr.max_aggr = LRO_MAX_AGGR; + mac->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS; + mac->lro_mgr.lro_arr = mac->lro_desc; + mac->lro_mgr.get_skb_header = get_skb_hdr; + mac->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID; + mac->lro_mgr.dev = mac->netdev; + mac->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; + mac->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; + + mac->dma_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa007, NULL); if (!mac->dma_pdev) { dev_err(&mac->pdev->dev, "Can't find DMA Controller\n"); diff --git a/drivers/net/pasemi_mac.h b/drivers/net/pasemi_mac.h index c6555edb..8bee2a6 100644 --- a/drivers/net/pasemi_mac.h +++ b/drivers/net/pasemi_mac.h @@ -26,6 +26,8 @@ #include <linux/spinlock.h> #include <linux/phy.h> +#define MAX_LRO_DESCRIPTORS 8 + struct pasemi_mac_txring { struct pasemi_dmachan chan; /* Must be first */ spinlock_t lock; @@ -64,7 +66,10 @@ struct pasemi_mac { u8 mac_addr[6]; + struct net_lro_mgr lro_mgr; + struct net_lro_desc lro_desc[MAX_LRO_DESCRIPTORS]; struct timer_list rxtimer; + unsigned int lro_max_aggr; struct pasemi_mac_txring *tx; struct pasemi_mac_rxring *rx; |
