Merge branch 'for-next' into for-linus

[safe/jmp/linux-2.6] / drivers / net / cxgb3 / sge.c

diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c
index 5dbc125..67e61b2 100644 (file)
--- a/drivers/net/cxgb3/sge.c
+++ b/drivers/net/cxgb3/sge.c
@@ -42,6 +42,7 @@
 #include "sge_defs.h"
 #include "t3_cpl.h"
 #include "firmware_exports.h"
+#include "cxgb3_offload.h"
 
 #define USE_GTS 0
 
@@ -480,6 +481,7 @@ static inline void ring_fl_db(struct adapter *adap, struct sge_fl *q)
 {
        if (q->pend_cred >= q->credits / 4) {
                q->pend_cred = 0;
+               wmb();
                t3_write_reg(adap, A_SG_KDOORBELL, V_EGRCNTX(q->cntxt_id));
        }
 }
@@ -2079,6 +2081,7 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
                         struct sge_fl *fl, int len, int complete)
 {
        struct rx_sw_desc *sd = &fl->sdesc[fl->cidx];
+       struct port_info *pi = netdev_priv(qs->netdev);
        struct sk_buff *skb = NULL;
        struct cpl_rx_pkt *cpl;
        struct skb_frag_struct *rx_frag;
@@ -2116,11 +2119,18 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
 
        if (!nr_frags) {
                offset = 2 + sizeof(struct cpl_rx_pkt);
-               qs->lro_va = sd->pg_chunk.va + 2;
-       }
-       len -= offset;
+               cpl = qs->lro_va = sd->pg_chunk.va + 2;
+
+               if ((pi->rx_offload & T3_RX_CSUM) &&
+                    cpl->csum_valid && cpl->csum == htons(0xffff)) {
+                       skb->ip_summed = CHECKSUM_UNNECESSARY;
+                       qs->port_stats[SGE_PSTAT_RX_CSUM_GOOD]++;
+               } else
+                       skb->ip_summed = CHECKSUM_NONE;
+       } else
+               cpl = qs->lro_va;
 
-       prefetch(qs->lro_va);
+       len -= offset;
 
        rx_frag += nr_frags;
        rx_frag->page = sd->pg_chunk.page;
@@ -2136,12 +2146,8 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
                return;
 
        skb_record_rx_queue(skb, qs - &adap->sge.qs[0]);
-       skb->ip_summed = CHECKSUM_UNNECESSARY;
-       cpl = qs->lro_va;
 
        if (unlikely(cpl->vlan_valid)) {
-               struct net_device *dev = qs->netdev;
-               struct port_info *pi = netdev_priv(dev);
                struct vlan_group *grp = pi->vlan_grp;
 
                if (likely(grp != NULL)) {
@@ -2282,11 +2288,14 @@ static int process_responses(struct adapter *adap, struct sge_qset *qs,
        while (likely(budget_left && is_new_response(r, q))) {
                int packet_complete, eth, ethpad = 2, lro = qs->lro_enabled;
                struct sk_buff *skb = NULL;
-               u32 len, flags = ntohl(r->flags);
-               __be32 rss_hi = *(const __be32 *)r,
-                      rss_lo = r->rss_hdr.rss_hash_val;
+               u32 len, flags;
+               __be32 rss_hi, rss_lo;
 
+               rmb();
                eth = r->rss_hdr.opcode == CPL_RX_PKT;
+               rss_hi = *(const __be32 *)r;
+               rss_lo = r->rss_hdr.rss_hash_val;
+               flags = ntohl(r->flags);
 
                if (unlikely(flags & F_RSPD_ASYNC_NOTIF)) {
                        skb = alloc_skb(AN_PKT_SIZE, GFP_ATOMIC);
@@ -2497,7 +2506,10 @@ static int process_pure_responses(struct adapter *adap, struct sge_qset *qs,
                        refill_rspq(adap, q, q->credits);
                        q->credits = 0;
                }
-       } while (is_new_response(r, q) && is_pure_response(r));
+               if (!is_new_response(r, q))
+                       break;
+               rmb();
+       } while (is_pure_response(r));
 
        if (sleeping)
                check_ring_db(adap, qs, sleeping);
@@ -2531,6 +2543,7 @@ static inline int handle_responses(struct adapter *adap, struct sge_rspq *q)
 
        if (!is_new_response(r, q))
                return -1;
+       rmb();
        if (is_pure_response(r) && process_pure_responses(adap, qs, r) == 0) {
                t3_write_reg(adap, A_SG_GTS, V_RSPQ(q->cntxt_id) |
                             V_NEWTIMER(q->holdoff_tmr) | V_NEWINDEX(q->cidx));
@@ -2829,8 +2842,13 @@ void t3_sge_err_intr_handler(struct adapter *adapter)
        }
 
        if (status & (F_HIPIODRBDROPERR | F_LOPIODRBDROPERR))
-               CH_ALERT(adapter, "SGE dropped %s priority doorbell\n",
-                        status & F_HIPIODRBDROPERR ? "high" : "lo");
+               queue_work(cxgb3_wq, &adapter->db_drop_task);
+
+       if (status & (F_HIPRIORITYDBFULL | F_LOPRIORITYDBFULL))
+               queue_work(cxgb3_wq, &adapter->db_full_task);
+
+       if (status & (F_HIPRIORITYDBEMPTY | F_LOPRIORITYDBEMPTY))
+               queue_work(cxgb3_wq, &adapter->db_empty_task);
 
        t3_write_reg(adapter, A_SG_INT_CAUSE, status);
        if (status &  SGE_FATALERR)