[PATCH 4.4 001/193] net: add dst_cache support

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Paolo Abeni commit 911362c70df5b766c243dc297fadeaced786ffd8 upstream. This patch add a generic, lockless dst cache implementation. The need for lock is avoided updating the

[PATCH 4.4 001/193] net: add dst_cache support

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Paolo Abeni commit 911362c70df5b766c243dc297fadeaced786ffd8 upstream. This patch add a generic, lockless dst cache implementation. The need for lock is avoided updating the dst cache fields