iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: ethernet: ti: Add desc_infos member to struct k3_cppi_desc_pool

Browse Source 
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@baylibre.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julien Panis 2024-04-12 17:38:33 +02:00 committed by David S. Miller
parent cd8ff81f74
commit 84d767a3c0
2 changed files with 33 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/net/ethernet/ti/k3-cppi-desc-pool.c
View File

@ -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)
@ -37,7 +38,11 @@ void k3_cppi_desc_pool_destroy(struct k3_cppi_desc_pool *pool)
dma_free_coherent(pool->dev, pool->mem_size, pool->cpumem,
pool->dma_addr);
kfree(pool->desc_infos);
gen_pool_destroy(pool->gen_pool); /* frees pool->name */
kfree(pool);
}
EXPORT_SYMBOL_GPL(k3_cppi_desc_pool_destroy);
@ -50,7 +55,7 @@ k3_cppi_desc_pool_create_name(struct device *dev, size_t size,
const char *pool_name = NULL;
int ret = -ENOMEM;
pool = devm_kzalloc(dev, sizeof(*pool), GFP_KERNEL);
pool = kzalloc(sizeof(*pool), GFP_KERNEL);
if (!pool)
return ERR_PTR(ret);
@ -62,18 +67,21 @@ k3_cppi_desc_pool_create_name(struct device *dev, size_t size,
pool_name = kstrdup_const(name ? name : dev_name(pool->dev),
GFP_KERNEL);
if (!pool_name)
return ERR_PTR(-ENOMEM);
goto gen_pool_create_fail;
pool->gen_pool = gen_pool_create(ilog2(pool->desc_size), -1);
if (!pool->gen_pool) {
ret = -ENOMEM;
dev_err(pool->dev, "pool create failed %d\n", ret);
kfree_const(pool_name);
goto gen_pool_create_fail;
}
pool->gen_pool->name = pool_name;
pool->desc_infos = kcalloc(pool->num_desc,
sizeof(*pool->desc_infos), GFP_KERNEL);
if (!pool->desc_infos)
goto gen_pool_desc_infos_alloc_fail;
pool->cpumem = dma_alloc_coherent(pool->dev, pool->mem_size,
&pool->dma_addr, GFP_KERNEL);
@ -94,9 +102,11 @@ gen_pool_add_virt_fail:
dma_free_coherent(pool->dev, pool->mem_size, pool->cpumem,
pool->dma_addr);
dma_alloc_fail:
kfree(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);
kfree(pool);
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(k3_cppi_desc_pool_create_name);
@ -144,5 +154,19 @@ void *k3_cppi_desc_pool_cpuaddr(const 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(const 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");

4
drivers/net/ethernet/ti/k3-cppi-desc-pool.h
View File

@ -28,5 +28,9 @@ 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(const struct k3_cppi_desc_pool *pool);
void *k3_cppi_desc_pool_cpuaddr(const 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(const struct k3_cppi_desc_pool *pool,
int desc_idx);
#endif /* K3_CPPI_DESC_POOL_H_ */