qeth: change some configurations defaults
Frank Blaschka [Mon, 14 Mar 2011 22:39:47 +0000 (15:39 -0700)]
This patch turns on RX checksum and GRO by default. To improve
receiving performance and reduce congestion in case of network
bursts we also increase the default number of inbound buffers.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_core.h
drivers/s390/net/qeth_core_main.c
drivers/s390/net/qeth_l3_main.c

index c5d763e..af3f7b0 100644 (file)
@@ -225,7 +225,8 @@ static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
 /*****************************************************************************/
 #define QETH_MAX_QUEUES 4
 #define QETH_IN_BUF_SIZE_DEFAULT 65536
-#define QETH_IN_BUF_COUNT_DEFAULT 16
+#define QETH_IN_BUF_COUNT_DEFAULT 64
+#define QETH_IN_BUF_COUNT_HSDEFAULT 128
 #define QETH_IN_BUF_COUNT_MIN 8
 #define QETH_IN_BUF_COUNT_MAX 128
 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
index f3d98ac..25eef30 100644 (file)
@@ -1026,7 +1026,10 @@ static void qeth_init_qdio_info(struct qeth_card *card)
        atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
        /* inbound */
        card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
-       card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
+       if (card->info.type == QETH_CARD_TYPE_IQD)
+               card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
+       else
+               card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
        card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
        INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
        INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
index 6a9cc58..142e5f6 100644 (file)
@@ -3392,6 +3392,8 @@ static int qeth_l3_setup_netdev(struct qeth_card *card)
                        if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
                                card->dev->dev_id = card->info.unique_id &
                                                         0xffff;
+                       if (!card->info.guestlan)
+                               card->dev->features |= NETIF_F_GRO;
                }
        } else if (card->info.type == QETH_CARD_TYPE_IQD) {
                card->dev = alloc_netdev(0, "hsi%d", ether_setup);
@@ -3430,6 +3432,9 @@ static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
        card->discipline.output_handler = (qdio_handler_t *)
                qeth_qdio_output_handler;
        card->discipline.recover = qeth_l3_recover;
+       if ((card->info.type == QETH_CARD_TYPE_OSD) ||
+           (card->info.type == QETH_CARD_TYPE_OSX))
+               card->options.checksum_type = HW_CHECKSUMMING;
        return 0;
 }