On 2024-03-25 at 21:30:36, Julien Panis (jpanis@xxxxxxxxxxxx) wrote:
> This patch introduces a member and the related accessors which can be
> used to store descriptor specific additional information. This member
> can store, for instance, an ID to differentiate a skb TX buffer type
> from a xdpf TX buffer type.
>
> Signed-off-by: Julien Panis <jpanis@xxxxxxxxxxxx>
> ---
> drivers/net/ethernet/ti/k3-cppi-desc-pool.c | 24 ++++++++++++++++++++++++
> drivers/net/ethernet/ti/k3-cppi-desc-pool.h | 2 ++
> 2 files changed, 26 insertions(+)
>
> diff --git a/drivers/net/ethernet/ti/k3-cppi-desc-pool.c b/drivers/net/ethernet/ti/k3-cppi-desc-pool.c
> index fe8203c05731..d0c68d722ef2 100644
> --- a/drivers/net/ethernet/ti/k3-cppi-desc-pool.c
> +++ b/drivers/net/ethernet/ti/k3-cppi-desc-pool.c
> @@ -22,6 +22,7 @@ struct k3_cppi_desc_pool {
> size_t mem_size;
> size_t num_desc;
> struct gen_pool *gen_pool;
> + void **desc_infos;
> };
>
> void k3_cppi_desc_pool_destroy(struct k3_cppi_desc_pool *pool)
> @@ -72,6 +73,15 @@ k3_cppi_desc_pool_create_name(struct device *dev, size_t size,
> goto gen_pool_create_fail;
> }
>
> + pool->desc_infos = devm_kcalloc(dev, pool->num_desc,
> + sizeof(*pool->desc_infos), GFP_KERNEL);
This should be freed as well, right ?
.set_channels() in ethtool ops cleans pools; but not this. This wont
result in memory leak ? s/devm_kcalloc/kcalloc if my comment
is correct.
> + if (!pool->desc_infos) {
> + ret = -ENOMEM;
> + dev_err(pool->dev, "pool descriptor infos alloc failed %d\n", ret);
> + kfree_const(pool_name);
> + goto gen_pool_desc_infos_alloc_fail;
> + }
> +
> pool->gen_pool->name = pool_name;
>
> pool->cpumem = dma_alloc_coherent(pool->dev, pool->mem_size,
> @@ -94,6 +104,8 @@ k3_cppi_desc_pool_create_name(struct device *dev, size_t size,
> dma_free_coherent(pool->dev, pool->mem_size, pool->cpumem,
> pool->dma_addr);
> dma_alloc_fail:
> + devm_kfree(pool->dev, pool->desc_infos);
> +gen_pool_desc_infos_alloc_fail:
> gen_pool_destroy(pool->gen_pool); /* frees pool->name */
> gen_pool_create_fail:
> devm_kfree(pool->dev, pool);
> @@ -144,5 +156,17 @@ void *k3_cppi_desc_pool_cpuaddr(struct k3_cppi_desc_pool *pool)
> }
> EXPORT_SYMBOL_GPL(k3_cppi_desc_pool_cpuaddr);
>
> +void k3_cppi_desc_pool_desc_info_set(struct k3_cppi_desc_pool *pool, int desc_idx, void *info)
> +{
> + pool->desc_infos[desc_idx] = info;
> +}
> +EXPORT_SYMBOL_GPL(k3_cppi_desc_pool_desc_info_set);
> +
> +void *k3_cppi_desc_pool_desc_info(struct k3_cppi_desc_pool *pool, int desc_idx)
> +{
> + return pool->desc_infos[desc_idx];
> +}
> +EXPORT_SYMBOL_GPL(k3_cppi_desc_pool_desc_info);
> +
> MODULE_LICENSE("GPL");
> MODULE_DESCRIPTION("TI K3 CPPI5 descriptors pool API");
> diff --git a/drivers/net/ethernet/ti/k3-cppi-desc-pool.h b/drivers/net/ethernet/ti/k3-cppi-desc-pool.h
> index 149d5579a5e2..0076596307e7 100644
> --- a/drivers/net/ethernet/ti/k3-cppi-desc-pool.h
> +++ b/drivers/net/ethernet/ti/k3-cppi-desc-pool.h
> @@ -28,5 +28,7 @@ void k3_cppi_desc_pool_free(struct k3_cppi_desc_pool *pool, void *addr);
> size_t k3_cppi_desc_pool_avail(struct k3_cppi_desc_pool *pool);
> size_t k3_cppi_desc_pool_desc_size(struct k3_cppi_desc_pool *pool);
> void *k3_cppi_desc_pool_cpuaddr(struct k3_cppi_desc_pool *pool);
> +void k3_cppi_desc_pool_desc_info_set(struct k3_cppi_desc_pool *pool, int desc_idx, void *info);
> +void *k3_cppi_desc_pool_desc_info(struct k3_cppi_desc_pool *pool, int desc_idx);
>
> #endif /* K3_CPPI_DESC_POOL_H_ */
>
> --
> 2.37.3
>
