IB/mlx4: Remove limitation on LSO header size

[linux-2.6-block.git] / drivers / net / mlx4 / fw.c

diff --git a/drivers/net/mlx4/fw.c b/drivers/net/mlx4/fw.c
index cee199ceba2f06f6a2c1e82e170668d2743e2530..7194be3a28945c419e892bd6c790fb97e1b55f76 100644 (file)
--- a/drivers/net/mlx4/fw.c
+++ b/drivers/net/mlx4/fw.c
@@ -33,6 +33,7 @@
  */
 
 #include <linux/mlx4/cmd.h>
+#include <linux/cache.h>
 
 #include "fw.h"
 #include "icm.h"
@@ -89,6 +90,7 @@ static void dump_dev_cap_flags(struct mlx4_dev *dev, u32 flags)
                [ 9] = "Q_Key violation counter",
                [10] = "VMM",
                [12] = "DPDP",
+               [15] = "Big LSO headers",
                [16] = "MW support",
                [17] = "APM support",
                [18] = "Atomic ops support",
@@ -698,6 +700,7 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
 #define INIT_HCA_IN_SIZE                0x200
 #define INIT_HCA_VERSION_OFFSET                 0x000
 #define         INIT_HCA_VERSION                2
+#define INIT_HCA_CACHELINE_SZ_OFFSET    0x0e
 #define INIT_HCA_FLAGS_OFFSET           0x014
 #define INIT_HCA_QPC_OFFSET             0x020
 #define         INIT_HCA_QPC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x10)
@@ -735,6 +738,9 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
 
        *((u8 *) mailbox->buf + INIT_HCA_VERSION_OFFSET) = INIT_HCA_VERSION;
 
+       *((u8 *) mailbox->buf + INIT_HCA_CACHELINE_SZ_OFFSET) =
+               (ilog2(cache_line_size()) - 4) << 5;
+
 #if defined(__LITTLE_ENDIAN)
        *(inbox + INIT_HCA_FLAGS_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
 #elif defined(__BIG_ENDIAN)