diff mbox series

[net-next,v1,5/7] netmem: add netmem_prefetch

Message ID 20241029204541.1301203-6-almasrymina@google.com (mailing list archive)
State New
Delegated to: Netdev Maintainers
Headers show
Series devmem TCP fixes | expand

Commit Message

Mina Almasry Oct. 29, 2024, 8:45 p.m. UTC 
prefect(page) is a common thing to be called from drivers. Add
netmem_prefetch that can be called on generic netmem. Skips the prefetch
for net_iovs.

Signed-off-by: Mina Almasry <almasrymina@google.com>
---
 include/net/netmem.h | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/include/net/netmem.h b/include/net/netmem.h
index 8a6e20be4b9d..923c47147aa8 100644
--- a/include/net/netmem.h
+++ b/include/net/netmem.h
@@ -171,4 +171,11 @@  static inline unsigned long netmem_get_dma_addr(netmem_ref netmem)
 	return __netmem_clear_lsb(netmem)->dma_addr;
 }
 
+static inline void netmem_prefetch(netmem_ref netmem)
+{
+	if (netmem_is_net_iov(netmem))
+		return;
+
+	prefetch(netmem_to_page(netmem));
+}
 #endif /* _NET_NETMEM_H */