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

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 --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 */