[PATCH net-next 2/6] sk_buff: track dst status in slow_gro
From: Paolo Abeni <pabeni@redhat.com>
Date: 2021-07-28 16:24:43
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Similar to the previous patch, but covering the dst field: the slow_gro flag is additionally set when a dst is attached to the skb RFC -> v1: - use the existing flag instead of adding a new one Signed-off-by: Paolo Abeni <pabeni@redhat.com> --- include/linux/skbuff.h | 2 ++ include/net/dst.h | 2 ++ 2 files changed, 4 insertions(+)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 3ff18300d210..b1e5bbfcc926 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h@@ -992,6 +992,7 @@ static inline struct dst_entry *skb_dst(const struct sk_buff *skb) */ static inline void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) { + skb->slow_gro |= !!dst; skb->_skb_refdst = (unsigned long)dst; }
@@ -1008,6 +1009,7 @@ static inline void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) static inline void skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst) { WARN_ON(!rcu_read_lock_held() && !rcu_read_lock_bh_held()); + skb->slow_gro = !!dst; skb->_skb_refdst = (unsigned long)dst | SKB_DST_NOREF; }
diff --git a/include/net/dst.h b/include/net/dst.h
index 75b1e734e9c2..a057319aabef 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h@@ -277,6 +277,7 @@ static inline void skb_dst_drop(struct sk_buff *skb) static inline void __skb_dst_copy(struct sk_buff *nskb, unsigned long refdst) { + nskb->slow_gro |= !!refdst; nskb->_skb_refdst = refdst; if (!(nskb->_skb_refdst & SKB_DST_NOREF)) dst_clone(skb_dst(nskb));
@@ -316,6 +317,7 @@ static inline bool skb_dst_force(struct sk_buff *skb) dst = NULL; skb->_skb_refdst = (unsigned long)dst; + skb->slow_gro |= !!dst; } return skb->_skb_refdst != 0UL;
--
2.26.3