From: Julien Panis <jpanis@baylibre.com>
To: "David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Russell King" <linux@armlinux.org.uk>,
"Alexei Starovoitov" <ast@kernel.org>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
"John Fastabend" <john.fastabend@gmail.com>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Christian König" <christian.koenig@amd.com>,
"Simon Horman" <horms@kernel.org>, "Andrew Lunn" <andrew@lunn.ch>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
bpf@vger.kernel.org, linux-media@vger.kernel.org,
dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org,
Julien Panis <jpanis@baylibre.com>
Subject: [PATCH v3 2/3] net: ethernet: ti: Add desc_infos member to struct k3_cppi_desc_pool
Date: Tue, 05 Mar 2024 12:08:19 +0100 [thread overview]
Message-ID: <20240223-am65-cpsw-xdp-basic-v3-2-5d944a9d84a0@baylibre.com> (raw)
In-Reply-To: <20240223-am65-cpsw-xdp-basic-v3-0-5d944a9d84a0@baylibre.com>
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>
---
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);
+ 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
next prev parent reply other threads:[~2024-03-05 11:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-05 11:08 [PATCH v3 0/3] DONOTMERGE: Add minimal XDP support to TI AM65 CPSW Ethernet driver Julien Panis
2024-03-05 11:08 ` [PATCH v3 1/3] net: ethernet: ti: Add accessors for struct k3_cppi_desc_pool members Julien Panis
2024-03-05 11:08 ` Julien Panis [this message]
2024-03-05 11:08 ` [PATCH v3 3/3] net: ethernet: ti: am65-cpsw: Add minimal XDP support Julien Panis
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240223-am65-cpsw-xdp-basic-v3-2-5d944a9d84a0@baylibre.com \
--to=jpanis@baylibre.com \
--cc=andrew@lunn.ch \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=christian.koenig@amd.com \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=dri-devel@lists.freedesktop.org \
--cc=edumazet@google.com \
--cc=hawk@kernel.org \
--cc=horms@kernel.org \
--cc=john.fastabend@gmail.com \
--cc=kuba@kernel.org \
--cc=linaro-mm-sig@lists.linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=sumit.semwal@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).