diff options
| author | Alok Makhariya <B46187@freescale.com> | 2014-03-28 12:27:26 (GMT) |
|---|---|---|
| committer | Jose Rivera <German.Rivera@freescale.com> | 2014-03-31 18:56:06 (GMT) |
| commit | e054a24a775f4c91925693bcfefb4b9396a37345 (patch) | |
| tree | 6b9b604b7909be551d85ca2f46db7125b829e3ce | |
| parent | c98664cd2bb7dada1aaec9f037d59ac90d5e4820 (diff) | |
| download | linux-fsl-qoriq-e054a24a775f4c91925693bcfefb4b9396a37345.tar.xz | |
ASF : Adding hooks to offload packets to ASF
Hooks are added in asf_gianfar.c to offload packet to ASF.
Change-Id: Id553d25510d18d7918d02e8375c5fc89d7e6e9a1
CQ ID : ENGR00304852
Signed-off-by: Alok Makhariya <B46187@freescale.com>
Reviewed-on: http://git.am.freescale.net:8181/10354
Reviewed-by: Rajan Gupta <rajan.gupta@freescale.com>
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
| -rw-r--r-- | drivers/net/ethernet/freescale/asf_gianfar.c | 25 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/asf_gianfar.h | 20 |
2 files changed, 45 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/asf_gianfar.c b/drivers/net/ethernet/freescale/asf_gianfar.c index fba42ba..75102b8 100644 --- a/drivers/net/ethernet/freescale/asf_gianfar.c +++ b/drivers/net/ethernet/freescale/asf_gianfar.c @@ -26,6 +26,12 @@ #define GFAR_RXB_REC_SZ (DEFAULT_RX_BUFFER_SIZE + RXBUF_ALIGNMENT) +devfp_hook_t devfp_rx_hook; +EXPORT_SYMBOL(devfp_rx_hook); + +devfp_hook_t devfp_tx_hook; +EXPORT_SYMBOL(devfp_tx_hook); + static inline void gfar_recycle_skb(struct sk_buff *skb) { struct sk_buff_head *h = &__get_cpu_var(skb_recycle_list); @@ -81,6 +87,21 @@ static void gfar_process_frame(struct net_device *dev, struct sk_buff *skb, if (dev->features & NETIF_F_RXCSUM) gfar_rx_checksum(skb, fcb); + if (devfp_rx_hook) { + /* Drop the packet silently if IP Checksum is not correct */ + if ((fcb->flags & RXFCB_CIP) && (fcb->flags & RXFCB_EIP)) { + dev_kfree_skb_any(skb); + return; + } + if (dev->features & NETIF_F_HW_VLAN_CTAG_RX && + fcb->flags & RXFCB_VLN) + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), fcb->vlctl); + + skb->dev = dev; + if (devfp_rx_hook(skb, dev) == AS_FP_STOLEN) + return; + } + /* Tell the skb what kind of packet this is */ skb->protocol = eth_type_trans(skb, dev); @@ -112,6 +133,10 @@ int gfar_asf_start_xmit(struct sk_buff *skb, struct net_device *dev) int skb_curtx = 0; unsigned int nr_frags, nr_txbds, bytes_sent, fcb_len = 0; + if (devfp_tx_hook && (skb->pkt_type != PACKET_FASTROUTE)) + if (devfp_tx_hook(skb, dev) == AS_FP_STOLEN) + return 0; + rq = smp_processor_id(); tx_queue = priv->tx_queue[rq]; diff --git a/drivers/net/ethernet/freescale/asf_gianfar.h b/drivers/net/ethernet/freescale/asf_gianfar.h index e53bcca..3abb1ea 100644 --- a/drivers/net/ethernet/freescale/asf_gianfar.h +++ b/drivers/net/ethernet/freescale/asf_gianfar.h @@ -35,4 +35,24 @@ int gfar_asf_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit); extern void gfar_asf_process_frame(struct net_device *dev, struct sk_buff *skb, int amount_pull, struct napi_struct *napi); +#define AS_FP_PROCEED 1 +#define AS_FP_STOLEN 2 +typedef int (*devfp_hook_t)(struct sk_buff *skb, struct net_device *dev); +extern devfp_hook_t devfp_rx_hook; +extern devfp_hook_t devfp_tx_hook; + +/* Overwrite the Rx/Tx Hooks pointers + * if already configured. + */ +static inline int devfp_register_rx_hook(devfp_hook_t hook) +{ + devfp_rx_hook = hook; + return 0; +} + +static inline int devfp_register_tx_hook(devfp_hook_t hook) +{ + devfp_tx_hook = hook; + return 0; +} #endif /* __ASF_GIANFAR_H */ |