diff options
author | Simon Horman <horms@verge.net.au> | 2008-10-07 08:40:11 +1100 |
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committer | Simon Horman <horms@verge.net.au> | 2008-10-07 08:40:11 +1100 |
commit | a5e8546a8bff5d2047adc279df5753c44ba7b1a1 (patch) | |
tree | d9ca91f74d8279adbb1d3e942cc7ab145780ee29 /drivers/net/cxgb3/sge.c | |
parent | cb7f6a7b716e801097b564dec3ccb58d330aef56 (diff) | |
parent | c7004482e8dcb7c3c72666395cfa98a216a4fb70 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 into lvs-next-2.6
Diffstat (limited to 'drivers/net/cxgb3/sge.c')
-rw-r--r-- | drivers/net/cxgb3/sge.c | 80 |
1 files changed, 23 insertions, 57 deletions
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c index 1b0861d73ab..89efd04be4e 100644 --- a/drivers/net/cxgb3/sge.c +++ b/drivers/net/cxgb3/sge.c @@ -1704,16 +1704,15 @@ int t3_offload_tx(struct t3cdev *tdev, struct sk_buff *skb) */ static inline void offload_enqueue(struct sge_rspq *q, struct sk_buff *skb) { - skb->next = skb->prev = NULL; - if (q->rx_tail) - q->rx_tail->next = skb; - else { + int was_empty = skb_queue_empty(&q->rx_queue); + + __skb_queue_tail(&q->rx_queue, skb); + + if (was_empty) { struct sge_qset *qs = rspq_to_qset(q); napi_schedule(&qs->napi); - q->rx_head = skb; } - q->rx_tail = skb; } /** @@ -1754,26 +1753,29 @@ static int ofld_poll(struct napi_struct *napi, int budget) int work_done = 0; while (work_done < budget) { - struct sk_buff *head, *tail, *skbs[RX_BUNDLE_SIZE]; + struct sk_buff *skb, *tmp, *skbs[RX_BUNDLE_SIZE]; + struct sk_buff_head queue; int ngathered; spin_lock_irq(&q->lock); - head = q->rx_head; - if (!head) { + __skb_queue_head_init(&queue); + skb_queue_splice_init(&q->rx_queue, &queue); + if (skb_queue_empty(&queue)) { napi_complete(napi); spin_unlock_irq(&q->lock); return work_done; } - - tail = q->rx_tail; - q->rx_head = q->rx_tail = NULL; spin_unlock_irq(&q->lock); - for (ngathered = 0; work_done < budget && head; work_done++) { - prefetch(head->data); - skbs[ngathered] = head; - head = head->next; - skbs[ngathered]->next = NULL; + ngathered = 0; + skb_queue_walk_safe(&queue, skb, tmp) { + if (work_done >= budget) + break; + work_done++; + + __skb_unlink(skb, &queue); + prefetch(skb->data); + skbs[ngathered] = skb; if (++ngathered == RX_BUNDLE_SIZE) { q->offload_bundles++; adapter->tdev.recv(&adapter->tdev, skbs, @@ -1781,12 +1783,10 @@ static int ofld_poll(struct napi_struct *napi, int budget) ngathered = 0; } } - if (head) { /* splice remaining packets back onto Rx queue */ + if (!skb_queue_empty(&queue)) { + /* splice remaining packets back onto Rx queue */ spin_lock_irq(&q->lock); - tail->next = q->rx_head; - if (!q->rx_head) - q->rx_tail = tail; - q->rx_head = head; + skb_queue_splice(&queue, &q->rx_queue); spin_unlock_irq(&q->lock); } deliver_partial_bundle(&adapter->tdev, q, skbs, ngathered); @@ -1937,38 +1937,6 @@ static inline int lro_frame_ok(const struct cpl_rx_pkt *p) eh->h_proto == htons(ETH_P_IP) && ih->ihl == (sizeof(*ih) >> 2); } -#define TCP_FLAG_MASK (TCP_FLAG_CWR | TCP_FLAG_ECE | TCP_FLAG_URG |\ - TCP_FLAG_ACK | TCP_FLAG_PSH | TCP_FLAG_RST |\ - TCP_FLAG_SYN | TCP_FLAG_FIN) -#define TSTAMP_WORD ((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |\ - (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP) - -/** - * lro_segment_ok - check if a TCP segment is eligible for LRO - * @tcph: the TCP header of the packet - * - * Returns true if a TCP packet is eligible for LRO. This requires that - * the packet have only the ACK flag set and no TCP options besides - * time stamps. - */ -static inline int lro_segment_ok(const struct tcphdr *tcph) -{ - int optlen; - - if (unlikely((tcp_flag_word(tcph) & TCP_FLAG_MASK) != TCP_FLAG_ACK)) - return 0; - - optlen = (tcph->doff << 2) - sizeof(*tcph); - if (optlen) { - const u32 *opt = (const u32 *)(tcph + 1); - - if (optlen != TCPOLEN_TSTAMP_ALIGNED || - *opt != htonl(TSTAMP_WORD) || !opt[2]) - return 0; - } - return 1; -} - static int t3_get_lro_header(void **eh, void **iph, void **tcph, u64 *hdr_flags, void *priv) { @@ -1981,9 +1949,6 @@ static int t3_get_lro_header(void **eh, void **iph, void **tcph, *iph = (struct iphdr *)((struct ethhdr *)*eh + 1); *tcph = (struct tcphdr *)((struct iphdr *)*iph + 1); - if (!lro_segment_ok(*tcph)) - return -1; - *hdr_flags = LRO_IPV4 | LRO_TCP; return 0; } @@ -2934,6 +2899,7 @@ int t3_sge_alloc_qset(struct adapter *adapter, unsigned int id, int nports, q->rspq.gen = 1; q->rspq.size = p->rspq_size; spin_lock_init(&q->rspq.lock); + skb_queue_head_init(&q->rspq.rx_queue); q->txq[TXQ_ETH].stop_thres = nports * flits_to_desc(sgl_len(MAX_SKB_FRAGS + 1) + 3); |