diff options
| author | Jack Morgenstein <jackm@dev.mellanox.co.il> | 2012-06-19 12:21:33 +0400 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2012-07-09 05:05:05 +0400 |
| commit | 752a50cab600c6d46c5a1921c6a6d2fb116c8a4b (patch) | |
| tree | b6b4fac3ff771523c737eeb0ad922903977b2ec8 /drivers/net/ethernet/mellanox | |
| parent | 6887a4131da3adaab011613776d865f4bcfb5678 (diff) | |
| download | linux-752a50cab600c6d46c5a1921c6a6d2fb116c8a4b.tar.xz | |
mlx4_core: Pass an invalid PCI id number to VFs
Currently, VFs have 0 in their dev->caps.function field. This is a
valid pci id (usually of the PF). Instead, pass an invalid PCI id to
the VF via QUERY_FW, so that if the value gets accessed in the VF
driver, we'll catch the problem.
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/fw.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c index 9c83bb8151ea..4281ce09add8 100644 --- a/drivers/net/ethernet/mellanox/mlx4/fw.c +++ b/drivers/net/ethernet/mellanox/mlx4/fw.c @@ -881,11 +881,12 @@ int mlx4_QUERY_FW(struct mlx4_dev *dev) ((fw_ver & 0xffff0000ull) >> 16) | ((fw_ver & 0x0000ffffull) << 16); + MLX4_GET(lg, outbox, QUERY_FW_PPF_ID); + dev->caps.function = lg; + if (mlx4_is_slave(dev)) goto out; - MLX4_GET(lg, outbox, QUERY_FW_PPF_ID); - dev->caps.function = lg; MLX4_GET(cmd_if_rev, outbox, QUERY_FW_CMD_IF_REV_OFFSET); if (cmd_if_rev < MLX4_COMMAND_INTERFACE_MIN_REV || @@ -966,9 +967,12 @@ int mlx4_QUERY_FW_wrapper(struct mlx4_dev *dev, int slave, if (err) return err; - /* for slaves, zero out everything except FW version */ + /* for slaves, set pci PPF ID to invalid and zero out everything + * else except FW version */ outbuf[0] = outbuf[1] = 0; memset(&outbuf[8], 0, QUERY_FW_OUT_SIZE - 8); + outbuf[QUERY_FW_PPF_ID] = MLX4_INVALID_SLAVE_ID; + return 0; } |