Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[sfrench/cifs-2.6.git] / drivers / net / ethernet / ibm / ibmvnic.c
index 4b3df17c7a457da545cf8b0e1d5c13f70e41a855..b65f5f3ac034e980c46af086c11385f5aa9d0832 100644 (file)
@@ -410,6 +410,10 @@ static int reset_rx_pools(struct ibmvnic_adapter *adapter)
        struct ibmvnic_rx_pool *rx_pool;
        int rx_scrqs;
        int i, j, rc;
+       u64 *size_array;
+
+       size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
+               be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size));
 
        rx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
        for (i = 0; i < rx_scrqs; i++) {
@@ -417,7 +421,17 @@ static int reset_rx_pools(struct ibmvnic_adapter *adapter)
 
                netdev_dbg(adapter->netdev, "Re-setting rx_pool[%d]\n", i);
 
-               rc = reset_long_term_buff(adapter, &rx_pool->long_term_buff);
+               if (rx_pool->buff_size != be64_to_cpu(size_array[i])) {
+                       free_long_term_buff(adapter, &rx_pool->long_term_buff);
+                       rx_pool->buff_size = be64_to_cpu(size_array[i]);
+                       alloc_long_term_buff(adapter, &rx_pool->long_term_buff,
+                                            rx_pool->size *
+                                            rx_pool->buff_size);
+               } else {
+                       rc = reset_long_term_buff(adapter,
+                                                 &rx_pool->long_term_buff);
+               }
+
                if (rc)
                        return rc;
 
@@ -439,14 +453,12 @@ static int reset_rx_pools(struct ibmvnic_adapter *adapter)
 static void release_rx_pools(struct ibmvnic_adapter *adapter)
 {
        struct ibmvnic_rx_pool *rx_pool;
-       int rx_scrqs;
        int i, j;
 
        if (!adapter->rx_pool)
                return;
 
-       rx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
-       for (i = 0; i < rx_scrqs; i++) {
+       for (i = 0; i < adapter->num_active_rx_pools; i++) {
                rx_pool = &adapter->rx_pool[i];
 
                netdev_dbg(adapter->netdev, "Releasing rx_pool[%d]\n", i);
@@ -469,6 +481,7 @@ static void release_rx_pools(struct ibmvnic_adapter *adapter)
 
        kfree(adapter->rx_pool);
        adapter->rx_pool = NULL;
+       adapter->num_active_rx_pools = 0;
 }
 
 static int init_rx_pools(struct net_device *netdev)
@@ -493,6 +506,8 @@ static int init_rx_pools(struct net_device *netdev)
                return -1;
        }
 
+       adapter->num_active_rx_pools = 0;
+
        for (i = 0; i < rxadd_subcrqs; i++) {
                rx_pool = &adapter->rx_pool[i];
 
@@ -536,6 +551,8 @@ static int init_rx_pools(struct net_device *netdev)
                rx_pool->next_free = 0;
        }
 
+       adapter->num_active_rx_pools = rxadd_subcrqs;
+
        return 0;
 }
 
@@ -586,13 +603,12 @@ static void release_vpd_data(struct ibmvnic_adapter *adapter)
 static void release_tx_pools(struct ibmvnic_adapter *adapter)
 {
        struct ibmvnic_tx_pool *tx_pool;
-       int i, tx_scrqs;
+       int i;
 
        if (!adapter->tx_pool)
                return;
 
-       tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
-       for (i = 0; i < tx_scrqs; i++) {
+       for (i = 0; i < adapter->num_active_tx_pools; i++) {
                netdev_dbg(adapter->netdev, "Releasing tx_pool[%d]\n", i);
                tx_pool = &adapter->tx_pool[i];
                kfree(tx_pool->tx_buff);
@@ -603,6 +619,7 @@ static void release_tx_pools(struct ibmvnic_adapter *adapter)
 
        kfree(adapter->tx_pool);
        adapter->tx_pool = NULL;
+       adapter->num_active_tx_pools = 0;
 }
 
 static int init_tx_pools(struct net_device *netdev)
@@ -619,6 +636,8 @@ static int init_tx_pools(struct net_device *netdev)
        if (!adapter->tx_pool)
                return -1;
 
+       adapter->num_active_tx_pools = 0;
+
        for (i = 0; i < tx_subcrqs; i++) {
                tx_pool = &adapter->tx_pool[i];
 
@@ -666,6 +685,8 @@ static int init_tx_pools(struct net_device *netdev)
                tx_pool->producer_index = 0;
        }
 
+       adapter->num_active_tx_pools = tx_subcrqs;
+
        return 0;
 }
 
@@ -860,7 +881,7 @@ static int ibmvnic_get_vpd(struct ibmvnic_adapter *adapter)
        if (adapter->vpd->buff)
                len = adapter->vpd->len;
 
-       reinit_completion(&adapter->fw_done);
+       init_completion(&adapter->fw_done);
        crq.get_vpd_size.first = IBMVNIC_CRQ_CMD;
        crq.get_vpd_size.cmd = GET_VPD_SIZE;
        ibmvnic_send_crq(adapter, &crq);
@@ -922,6 +943,13 @@ static int init_resources(struct ibmvnic_adapter *adapter)
        if (!adapter->vpd)
                return -ENOMEM;
 
+       /* Vital Product Data (VPD) */
+       rc = ibmvnic_get_vpd(adapter);
+       if (rc) {
+               netdev_err(netdev, "failed to initialize Vital Product Data (VPD)\n");
+               return rc;
+       }
+
        adapter->map_id = 1;
        adapter->napi = kcalloc(adapter->req_rx_queues,
                                sizeof(struct napi_struct), GFP_KERNEL);
@@ -995,7 +1023,7 @@ static int __ibmvnic_open(struct net_device *netdev)
 static int ibmvnic_open(struct net_device *netdev)
 {
        struct ibmvnic_adapter *adapter = netdev_priv(netdev);
-       int rc, vpd;
+       int rc;
 
        mutex_lock(&adapter->reset_lock);
 
@@ -1018,11 +1046,6 @@ static int ibmvnic_open(struct net_device *netdev)
        rc = __ibmvnic_open(netdev);
        netif_carrier_on(netdev);
 
-       /* Vital Product Data (VPD) */
-       vpd = ibmvnic_get_vpd(adapter);
-       if (vpd)
-               netdev_err(netdev, "failed to initialize Vital Product Data (VPD)\n");
-
        mutex_unlock(&adapter->reset_lock);
 
        return rc;
@@ -1276,6 +1299,7 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
        unsigned char *dst;
        u64 *handle_array;
        int index = 0;
+       u8 proto = 0;
        int ret = 0;
 
        if (adapter->resetting) {
@@ -1364,17 +1388,18 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
        }
 
        if (skb->protocol == htons(ETH_P_IP)) {
-               if (ip_hdr(skb)->version == 4)
-                       tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4;
-               else if (ip_hdr(skb)->version == 6)
-                       tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6;
-
-               if (ip_hdr(skb)->protocol == IPPROTO_TCP)
-                       tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP;
-               else if (ip_hdr(skb)->protocol != IPPROTO_TCP)
-                       tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP;
+               tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4;
+               proto = ip_hdr(skb)->protocol;
+       } else if (skb->protocol == htons(ETH_P_IPV6)) {
+               tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6;
+               proto = ipv6_hdr(skb)->nexthdr;
        }
 
+       if (proto == IPPROTO_TCP)
+               tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP;
+       else if (proto == IPPROTO_UDP)
+               tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP;
+
        if (skb->ip_summed == CHECKSUM_PARTIAL) {
                tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD;
                hdrs += 2;
@@ -1546,6 +1571,7 @@ static int ibmvnic_set_mac(struct net_device *netdev, void *p)
 static int do_reset(struct ibmvnic_adapter *adapter,
                    struct ibmvnic_rwi *rwi, u32 reset_state)
 {
+       u64 old_num_rx_queues, old_num_tx_queues;
        struct net_device *netdev = adapter->netdev;
        int i, rc;
 
@@ -1555,6 +1581,9 @@ static int do_reset(struct ibmvnic_adapter *adapter,
        netif_carrier_off(netdev);
        adapter->reset_reason = rwi->reset_reason;
 
+       old_num_rx_queues = adapter->req_rx_queues;
+       old_num_tx_queues = adapter->req_tx_queues;
+
        if (rwi->reset_reason == VNIC_RESET_MOBILITY) {
                rc = ibmvnic_reenable_crq_queue(adapter);
                if (rc)
@@ -1599,6 +1628,12 @@ static int do_reset(struct ibmvnic_adapter *adapter,
                        rc = init_resources(adapter);
                        if (rc)
                                return rc;
+               } else if (adapter->req_rx_queues != old_num_rx_queues ||
+                          adapter->req_tx_queues != old_num_tx_queues) {
+                       release_rx_pools(adapter);
+                       release_tx_pools(adapter);
+                       init_rx_pools(netdev);
+                       init_tx_pools(netdev);
                } else {
                        rc = reset_tx_pools(adapter);
                        if (rc)
@@ -3346,7 +3381,11 @@ static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter)
                return;
        }
 
+       adapter->ip_offload_ctrl.len =
+           cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
        adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB);
+       adapter->ip_offload_ctrl.ipv4_chksum = buf->ipv4_chksum;
+       adapter->ip_offload_ctrl.ipv6_chksum = buf->ipv6_chksum;
        adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum;
        adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum;
        adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum;
@@ -3586,7 +3625,17 @@ static void handle_request_cap_rsp(union ibmvnic_crq *crq,
                         *req_value,
                         (long int)be64_to_cpu(crq->request_capability_rsp.
                                               number), name);
-               *req_value = be64_to_cpu(crq->request_capability_rsp.number);
+
+               if (be16_to_cpu(crq->request_capability_rsp.capability) ==
+                   REQ_MTU) {
+                       pr_err("mtu of %llu is not supported. Reverting.\n",
+                              *req_value);
+                       *req_value = adapter->fallback.mtu;
+               } else {
+                       *req_value =
+                               be64_to_cpu(crq->request_capability_rsp.number);
+               }
+
                ibmvnic_send_req_caps(adapter, 1);
                return;
        default: