1mlx5dv_devx_alloc_msi_vectorm(l3x)5 Programmer’s Manmulaxl5dv_devx_alloc_msi_vector(3)
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NAME

6       mlx5dv_devx_alloc_msi_vector  -  Allocate  an msi vector to be used for
7       creating an EQ.
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9       mlx5dv_devx_free_msi_vector - Release an msi vector.
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SYNOPSIS

12              #include <infiniband/mlx5dv.h>
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14              struct mlx5dv_devx_msi_vector *
15              mlx5dv_devx_alloc_msi_vector(struct ibv_context *ibctx);
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17              int mlx5dv_devx_free_msi_vector(struct mlx5dv_devx_msi_vector *msi);
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DESCRIPTION

20       Allocate or free an msi vector to be used for creating an EQ.
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22       The allocate API exposes a  mlx5dv_devx_msi_vector  object,  which  in‐
23       cludes  an msi vector and a fd.  The vector can be used as the “eqc.in‐
24       tr” field when creating an EQ, while the fd (created  as  non-blocking)
25       can be polled to see once there is some data on that EQ.
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ARGUMENTS

28       ibctx  RDMA device context to create the action on.
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30       msi    The msi vector object to work on.
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32   msi_vector
33              struct mlx5dv_devx_msi_vector {
34                  int vector;
35                  int fd;
36              };
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38       vector The vector to be used when creating the EQ over the device spec‐
39              ification.
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41       fd     The FD that will be used for polling.
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RETURN VALUE

44       Upon success mlx5dv_devx_alloc_msi_vector  will  return  a  new  struct
45       mlx5dv_devx_msi_vector;  On  error NULL will be returned and errno will
46       be set.
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48       Upon success mlx5dv_devx_free_msi_vector will return 0, on error  errno
49       will be returned.
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AUTHOR

52       Mark Zhang <markzhang@nvidia.com>
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56mlx5                              2022-01-12   mlx5dv_devx_alloc_msi_vector(3)
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