be2net: Add GRO support to the be2net driver. LRO is not supported anymore.
This patch removes support for INET_LRO and switches over to GRO. Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ajit Khaparde
David S. Miller
parent
2eee40c7f7
commit
5be93b9a86
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@ -1,7 +1,6 @@
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config BE2NET
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tristate "ServerEngines' 10Gbps NIC - BladeEngine 2"
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depends on PCI && INET
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select INET_LRO
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help
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This driver implements the NIC functionality for ServerEngines'
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10Gbps network adapter - BladeEngine 2.
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@ -28,11 +28,10 @@
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#include <linux/if_vlan.h>
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#include <linux/workqueue.h>
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#include <linux/interrupt.h>
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#include <linux/inet_lro.h>
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#include "be_hw.h"
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#define DRV_VER "2.0.348"
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#define DRV_VER "2.0.400"
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#define DRV_NAME "be2net"
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#define BE_NAME "ServerEngines BladeEngine2 10Gbps NIC"
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#define OC_NAME "Emulex OneConnect 10Gbps NIC"
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@ -72,9 +71,6 @@ static inline char *nic_name(struct pci_dev *pdev)
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#define MAX_RX_POST BE_NAPI_WEIGHT /* Frags posted at a time */
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#define RX_FRAGS_REFILL_WM (RX_Q_LEN - MAX_RX_POST)
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#define BE_MAX_LRO_DESCRIPTORS 16
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#define BE_MAX_FRAGS_PER_FRAME (min((u32) 16, (u32) MAX_SKB_FRAGS))
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struct be_dma_mem {
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void *va;
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dma_addr_t dma;
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@ -189,8 +185,6 @@ struct be_drvr_stats {
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u32 be_polls; /* number of times NAPI called poll function */
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u32 be_rx_events; /* number of ucast rx completion events */
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u32 be_rx_compl; /* number of rx completion entries processed */
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u32 be_lro_hgram_data[8]; /* histogram of LRO data packets */
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u32 be_lro_hgram_ack[8]; /* histogram of LRO ACKs */
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ulong be_rx_jiffies;
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u64 be_rx_bytes;
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u64 be_rx_bytes_prev;
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@ -233,8 +227,6 @@ struct be_rx_obj {
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struct be_queue_info q;
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struct be_queue_info cq;
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struct be_rx_page_info page_info_tbl[RX_Q_LEN];
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struct net_lro_mgr lro_mgr;
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struct net_lro_desc lro_desc[BE_MAX_LRO_DESCRIPTORS];
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};
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#define BE_NUM_MSIX_VECTORS 2 /* 1 each for Tx and Rx */
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@ -271,7 +263,6 @@ struct be_adapter {
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/* Ethtool knobs and info */
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bool rx_csum; /* BE card must perform rx-checksumming */
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u32 max_rx_coal;
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char fw_ver[FW_VER_LEN];
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u32 if_handle; /* Used to configure filtering */
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u32 pmac_id; /* MAC addr handle used by BE card */
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@ -127,8 +127,6 @@ be_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
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struct be_eq_obj *rx_eq = &adapter->rx_eq;
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struct be_eq_obj *tx_eq = &adapter->tx_eq;
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coalesce->rx_max_coalesced_frames = adapter->max_rx_coal;
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coalesce->rx_coalesce_usecs = rx_eq->cur_eqd;
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coalesce->rx_coalesce_usecs_high = rx_eq->max_eqd;
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coalesce->rx_coalesce_usecs_low = rx_eq->min_eqd;
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@ -144,8 +142,7 @@ be_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
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}
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/*
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* This routine is used to set interrup coalescing delay *as well as*
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* the number of pkts to coalesce for LRO.
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* This routine is used to set interrup coalescing delay
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*/
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static int
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be_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
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@ -161,10 +158,6 @@ be_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
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if (coalesce->use_adaptive_tx_coalesce == 1)
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return -EINVAL;
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adapter->max_rx_coal = coalesce->rx_max_coalesced_frames;
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if (adapter->max_rx_coal > BE_MAX_FRAGS_PER_FRAME)
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adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
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/* if AIC is being turned on now, start with an EQD of 0 */
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if (rx_eq->enable_aic == 0 &&
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coalesce->use_adaptive_rx_coalesce == 1) {
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@ -742,7 +742,7 @@ done:
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return;
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}
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/* Process the RX completion indicated by rxcp when LRO is disabled */
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/* Process the RX completion indicated by rxcp when GRO is disabled */
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static void be_rx_compl_process(struct be_adapter *adapter,
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struct be_eth_rx_compl *rxcp)
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{
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@ -789,13 +789,14 @@ static void be_rx_compl_process(struct be_adapter *adapter,
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return;
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}
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/* Process the RX completion indicated by rxcp when LRO is enabled */
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static void be_rx_compl_process_lro(struct be_adapter *adapter,
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/* Process the RX completion indicated by rxcp when GRO is enabled */
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static void be_rx_compl_process_gro(struct be_adapter *adapter,
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struct be_eth_rx_compl *rxcp)
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{
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struct be_rx_page_info *page_info;
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struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
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struct sk_buff *skb = NULL;
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struct be_queue_info *rxq = &adapter->rx_obj.q;
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struct be_eq_obj *eq_obj = &adapter->rx_eq;
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u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
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u16 i, rxq_idx = 0, vid, j;
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@ -804,6 +805,12 @@ static void be_rx_compl_process_lro(struct be_adapter *adapter,
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vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
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rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
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skb = napi_get_frags(&eq_obj->napi);
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if (!skb) {
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be_rx_compl_discard(adapter, rxcp);
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return;
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}
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remaining = pkt_size;
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for (i = 0, j = -1; i < num_rcvd; i++) {
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page_info = get_rx_page_info(adapter, rxq_idx);
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@ -814,13 +821,14 @@ static void be_rx_compl_process_lro(struct be_adapter *adapter,
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if (i == 0 || page_info->page_offset == 0) {
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/* First frag or Fresh page */
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j++;
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rx_frags[j].page = page_info->page;
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rx_frags[j].page_offset = page_info->page_offset;
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rx_frags[j].size = 0;
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skb_shinfo(skb)->frags[j].page = page_info->page;
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skb_shinfo(skb)->frags[j].page_offset =
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page_info->page_offset;
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skb_shinfo(skb)->frags[j].size = 0;
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} else {
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put_page(page_info->page);
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}
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rx_frags[j].size += curr_frag_len;
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skb_shinfo(skb)->frags[j].size += curr_frag_len;
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remaining -= curr_frag_len;
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index_inc(&rxq_idx, rxq->len);
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@ -828,9 +836,14 @@ static void be_rx_compl_process_lro(struct be_adapter *adapter,
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}
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BUG_ON(j > MAX_SKB_FRAGS);
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skb_shinfo(skb)->nr_frags = j + 1;
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skb->len = pkt_size;
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skb->data_len = pkt_size;
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skb->truesize += pkt_size;
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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if (likely(!vlanf)) {
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lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
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pkt_size, NULL, 0);
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napi_gro_frags(&eq_obj->napi);
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} else {
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vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
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vid = be16_to_cpu(vid);
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@ -838,9 +851,7 @@ static void be_rx_compl_process_lro(struct be_adapter *adapter,
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if (!adapter->vlan_grp || adapter->num_vlans == 0)
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return;
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lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
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rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
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vid, NULL, 0);
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vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
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}
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be_rx_stats_update(adapter, pkt_size, num_rcvd);
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@ -1183,7 +1194,6 @@ static int be_rx_queues_create(struct be_adapter *adapter)
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struct be_queue_info *eq, *q, *cq;
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int rc;
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adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
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adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
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adapter->rx_eq.max_eqd = BE_MAX_EQD;
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adapter->rx_eq.min_eqd = 0;
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@ -1305,7 +1315,7 @@ static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
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return IRQ_HANDLED;
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}
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static inline bool do_lro(struct be_adapter *adapter,
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static inline bool do_gro(struct be_adapter *adapter,
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struct be_eth_rx_compl *rxcp)
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{
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int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
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@ -1314,8 +1324,7 @@ static inline bool do_lro(struct be_adapter *adapter,
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if (err)
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drvr_stats(adapter)->be_rxcp_err++;
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return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
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false : true;
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return (tcp_frame && !err) ? true : false;
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}
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int be_poll_rx(struct napi_struct *napi, int budget)
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@ -1332,16 +1341,14 @@ int be_poll_rx(struct napi_struct *napi, int budget)
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if (!rxcp)
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break;
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if (do_lro(adapter, rxcp))
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be_rx_compl_process_lro(adapter, rxcp);
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if (do_gro(adapter, rxcp))
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be_rx_compl_process_gro(adapter, rxcp);
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else
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be_rx_compl_process(adapter, rxcp);
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be_rx_compl_reset(rxcp);
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}
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lro_flush_all(&adapter->rx_obj.lro_mgr);
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/* Refill the queue */
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if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
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be_post_rx_frags(adapter);
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@ -1656,57 +1663,6 @@ static int be_close(struct net_device *netdev)
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return 0;
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}
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static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
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void **ip_hdr, void **tcpudp_hdr,
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u64 *hdr_flags, void *priv)
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{
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struct ethhdr *eh;
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struct vlan_ethhdr *veh;
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struct iphdr *iph;
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u8 *va = page_address(frag->page) + frag->page_offset;
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unsigned long ll_hlen;
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prefetch(va);
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eh = (struct ethhdr *)va;
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*mac_hdr = eh;
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ll_hlen = ETH_HLEN;
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if (eh->h_proto != htons(ETH_P_IP)) {
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if (eh->h_proto == htons(ETH_P_8021Q)) {
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veh = (struct vlan_ethhdr *)va;
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if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
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return -1;
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ll_hlen += VLAN_HLEN;
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} else {
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return -1;
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}
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}
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*hdr_flags = LRO_IPV4;
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iph = (struct iphdr *)(va + ll_hlen);
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*ip_hdr = iph;
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if (iph->protocol != IPPROTO_TCP)
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return -1;
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*hdr_flags |= LRO_TCP;
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*tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
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return 0;
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}
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static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
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{
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struct net_lro_mgr *lro_mgr;
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lro_mgr = &adapter->rx_obj.lro_mgr;
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lro_mgr->dev = netdev;
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lro_mgr->features = LRO_F_NAPI;
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lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
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lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
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lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
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lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
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lro_mgr->get_frag_header = be_get_frag_header;
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lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
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}
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static struct net_device_ops be_netdev_ops = {
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.ndo_open = be_open,
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.ndo_stop = be_close,
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@ -1727,7 +1683,7 @@ static void be_netdev_init(struct net_device *netdev)
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netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
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NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
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NETIF_F_IPV6_CSUM;
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NETIF_F_IPV6_CSUM | NETIF_F_GRO;
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netdev->flags |= IFF_MULTICAST;
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@ -1737,8 +1693,6 @@ static void be_netdev_init(struct net_device *netdev)
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SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
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be_lro_init(adapter, netdev);
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netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
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BE_NAPI_WEIGHT);
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netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
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