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mlx4: In RoCE allow guests to have multiple GIDS

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The GIDs are statically distributed, as follows:
PF: gets 16 GIDs
VFs:  Remaining GIDS are divided evenly between VFs activated by the driver.
      If the division is not even, lower-numbered VFs get an extra GID.

For an IB interface, the number of gids per guest remains as before: one gid per guest.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jack Morgenstein 2014-03-12 12:00:39 +02:00 • committed by David S. Miller
parent 9cd593529c
commit b6ffaeffae
7 changed files with 191 additions and 37 deletions
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1
include/linux/mlx4/device.h
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@ -49,6 +49,7 @@
#define MIN_MSIX_P_PORT 5
#define MLX4_ROCE_MAX_GIDS 128
#define MLX4_ROCE_PF_GIDS 16
enum {
MLX4_FLAG_MSI_X = 1 << 0,